Lighting Handbook Lighting For The Workplace

Lighting for the Workplace

AWB_Workplace_Q_Produktb_UK.qxd

02.05.2005

10:35 Uhr

Seite 3

3

CONTENTS

Foreword by Paul Morrell,

4–5

President of the British Council for Offices 6–7

INTRODUCTION

The Changing Corporate Perspective

6–7

WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE

Lighting Research versus the Codes

10–11

– The Lessons of Lighting Research

12–15

– Current Guidance and its Limitations

16–23

Key Issues in Workplace Lighting

24–29

Natural Light, Active Light & Balanced Light

30–37

Further Considerations in Workplace Lighting

38–47

Lighting Techniques – Comparing the Options

48–51

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

Open Plan Offices

56–67

Cellular Offices

68–71

Dealer Rooms

72–75

Control Rooms

76–79

Call Centres

80–83

Communication Areas/Meeting Rooms

84–87

Break-Out Zones

88–91

Storage

92–93

Common Parts

94–97

IMPRINT Publisher: Zumtobel Staff GmbH, Dornbirn/A Design: Marketing Communication Reprints, even in part, require the permission of the publishers © 2005 Zumtobel Staff GmbH, Dornbirn/A

52–97

98–135

WORKPLACE LIGHTING – LIGHTING DESIGN

Product Selector

100–133

Advisory Services

134–135

References & Useful Websites

8–51

135

Paul Morrell President of the British Council for Offices (BCO)

London aims to continue being Europe’s leading financial centre and will need more, higher quality office space in the future (photo: Piper’s model of the future City of London, shown at MIPIM 2005)

FOREWORD

The UK office market, in particular in London, is changing, driven by a number of long-term trends in international banking and finance. Informed forecasts, such as the recent Radley Report *, point, firstly, to a shift towards our capital city, at the expense of Paris and Frankfurt, as Europe’s leading financial centre, with a commensurate pressure on office space. Secondly, we can see a medium-to-long term growth in the number of highly educated, mathematically literate graduates required to run these complex, sophisticated financial operations. This shift from low skill to high skill staff puts a premium Paul Morrell BSc FRICS Hon FRIBA President of British Council for Offices

on worker satisfaction, as they become ever more demanding of their company and working conditions. The lesson is clear – nothing is more important in a service economy like ours than the efficiency of the working environment.

In today’s fast-moving marketplace, successful companies must invest in improved design and specification, to attract and retain an increasingly valuable and demanding workforce. People, not technology, must become the driving force of future office design. If one looks at the ratio of long-term costs of any business, including building design, construction, maintenance and personnel, design is a tiny fraction of the total – about 0.05 % of the cost of your workers. Yet that very small investment in good design has been proven to have a huge impact on staff satisfaction, efficiency and profitability. To put it another way, if a building can increase the productivity of its occupants by 10 per cent, you essentially get it free.

For all these reasons, improved design and specification – and especially lighting, the subject of this timely brochure from Zumtobel Staff Lighting – can make a significant contribution to long-term success.

* The Outlook for Banks Operating in the City of London (Radley & Associates, March 2004)

5

People & The Workplace As Organisations change, so does the Role of the Workplace

Historical Perspective

H

um

Res an

ources Mana ge m

en

t

WORKFORCE “the wages grow exponentially”

Lower qualified Less Aspirational Resistant to Change Traditional division between Human Resources and Facilities Management

FM driven Desk/task area focus Functional

“a cost centre to be controlled”

WORKSTATION

Fa

Contemporary Best Practice

cil

r Co

ities

por

m manage

ate Managem

en

en

wellness war for talent gymnasia esprit de corps brand in the workplace very aspirational management culture attraction, retention, motivation

WORKFORCE Living at Work

WORKPLACE lifestyle in the workplace added value break out zones open change agenda common parts differentiation flexiworking best practice lighting

t

t

Productivity factors influenced by lighting: Speed Persistence Accuracy Attraction Retention Motivation Satisfaction Happiness Potential Untapped Lighting Dividend

The Untapped Lighting Dividend

Single Path – Physiological

Generic practice lighting (Louvred Downlights)

Best practice lighting (Direct/Indirect)

Visual Capabilities

Visual Capabilities

Task Performance

Conventional Productivity Result

Task Performance

"Lighting and task conditions that improve visibility lead to better task performance"

Enhanced Productivity Dividend

Dual Path – Physiological & Psychological Physiological Path Visual Capabilities

Personal Control Best practice lighting (Direct/Indirect and controls)

Task Performance

Task Performance

“People with dimming control showed more sustained motivation, and improved performance on a measure of attention”

Health & Wellbeing

“People with dimming control reported higher ratings of lighting quality, overall environmental satisfaction, and self-rated productivity”

Motivation

Personal Control

Appraisal Preference

“Lighting and task conditions that improve visibility lead to better task performance”

Health & Wellbeing

Mood Psychological Path*

“People who are more satisfied with their lighting, rate the space as more attractive, are happier, and more satisfied with their environment and their work”

Productivity factors influenced by lighting: Speed Persistence Accuracy Attraction Retention Motivation Satisfaction Happiness The Untapped Lighting Dividend

* ”This is the first time that this complete path has been demonstrated”

“Light is the key to well-being.” – Le Corbusier

lighting design should be based

workplaces – gymnasia, break-

cal, rather than purely visual,

on the latest scientific research

out zones, thoughtfully designed

aspects of lighting.

into lighting and visual comfort –

common parts.

most of which is ignored in

The leading financial houses in

Constructing and operating a

current advisory codes. As we

The advantages gained by such

the City of London and other

building can cost a lot of money

demonstrate on pages 12–15,

hygiene factors are only just

financial capitals have long

– but not nearly as much as the

this research points towards a

beginning to be fully appreciated

realised the importance of light-

cost of the people who occupy

number of significant conclu-

– easier change management,

ing – share dealer rooms, which

the building. In the same equa-

sions that are embodied in our

sense of belonging, mirroring

produce the most spectacular

tion the cost of the lighting is

whole approach to workplace

the employees own personal

profits, are always equipped

insignificant. Comparatively

lighting.

aspirations – being just some.

with state-of-the-art direct/indi-

So, far from being a cost to be

rect lighting systems. Most have

and better lighting can have a

These pages illustrate how good

controlled, the workplace is

sophisticated controls. Banks

huge, positive knock-on effect

lighting can pay dividends. The

increasingly being viewed as an

and share traders know that

for many years to come. Con-

historical management perspec-

asset to be managed. But all

such systems create the most

versely bad design can push up

tive of the workplace – a cost to

the investment in hygiene fac-

stimulating and visually comfort-

long-term costs – while hitting

be controlled – has lead to the

tors and company culture can

able working environments.

the bottom line.

adoption of a standardised, and

be stifled if we follow the con-

flawed, lighting approach for

ventional, flawed lighting design

However at Zumtobel Staff we

In a world where the pace of

offices. But there are signs of

path. As business management

don’t believe that the best light-

change in work patterns, com-

change. Exceptional businesses

changes so must lighting begin

ing should be confined only to

pany practices and technology

are beginning to incorporate a

to reap the untapped dividends

high profile bond traders and

is accelerating, we believe that

range of hygiene factors in their

associated with the psychologi-

the like – ordinary administrative

small investment in better design

staff and other grades should not have to compromise with inferior, direct downlighter sys-

Integrated Model of Lighting Quality*

d In

– “Lighting is for more than visibility” – “Comfort is more than glare control”

i

ual vid – – – – – –

We l l -

tems, which surveys show are

Be

in

universally disliked. For the sake

g

visibility activity social & communication mood, comfort health & safety aesthetic judgement

of job satisfaction, visual comfort and general well-being, they also deserve the best lighting – and that means direct/indirect systems. These central principles, derived from the findings of lighting science – direct/indi-

* Jennifer A. Veitch, Ph.D. National Research Council of Canada www.irc.nrc-cnrc.gc.ca/ie/light

rect lighting and dynamic, vari-

The Untapped Lighting Dividend – – – – –

nomics

of this guide to office lighting. In combination they correspond to Zumtobel Staff’s central lighting – – – –

installation maintenance operation energy environment

Eco

able light levels – lie at the core

**

form composition style codes & standards

A rc h i t ecture

design philosophy, which can be summed up in the phrase “lighting for people”.

** see Chart page 7

AWB_Workplace_Q_Produktb_UK.qxd

02.05.2005

10:37 Uhr

Seite 7

Economics

Extra for Best Practice Potential Untapped Lighting Dividend

Lighting Cost

7

Photo: Allan Kell/Intelligent Buildings 2004

T H E C H A N G I N G C O R P O R AT E P E R S P E C T I V E

M&E Fitout

Construction Costs

Shell & Core

Rent 15 Years

People Costs 15 Years

Business Operating Costs

“I’m not saying you can walk on light: it doesn’t have structure, but it is part of the structure of the thinking of the architecture.” Richard Meier

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

9

Workplace Lighting – Architect: Foster & Partners

Past, Present and Future

Lighting Research versus the Codes

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

11

Office lighting design is in-

Unfortunately our misguided

lighting is a much more signifi-

human sensitivity. It reaches

creasingly bound by a whole

codes have now come to pass

cant factor in workplace health

the depths of one’s heart and

raft of recommendations and

as good practice, because too

and efficiency than is generally

awakens something asleep

standards emanating from the

few skilled lighting designers

recognised – and should be left

there.”

UK and the EC. A minority of

get the opportunity to design

to the real lighting professionals.

– Motoko Ishii

these standards and recommen-

genuinely creative workplace

The best, healthiest and most

dations are useful – others, as

lighting – as opposed to the

effective lighting schemes result

we shall see, are either out-of-

reception area, the boardroom

from qualified, experienced

date, due to the fast-moving

or the presentation suite, where

designers thinking “outside the

nature of office technology, or

they are most often employed.

box” – basing their designs not

run contrary to the findings of

Developers don’t see good,

on outdated codes and recom-

the most recent lighting research

innovative office lighting as im-

mendations, but on the latest

in both Europe and the USA.

portant, preferring instead to

findings of lighting science.

Take the official codification of

allow non-lighting specialists to

“dark light” louvred downlights

design and install humdrum,

On pages 12–15 we summarise

in the 1980s, triggered by

and even harmful, lighting,

the conclusions of the most

increased VDT use in the work-

according to a crude distillation

important pieces of recent

place. As a result of that single

of the Codes – an approach we

research in the area of work-

recommendation, office lighting

sum up as “working inside the

place lighting. Then on pages

undoubtedly went downhil, as

box”. As the introduction to the

16–23 we analyse current office

we were plunged into a new

DIAL research (see page 13)

lighting standards and recom-

“Dark Age”. The main problem

pessimistically reports, “good

mendations, to see how they

was the Code’s concentration

lighting designs are rare”.

measure up to these research

“Light has a great influence on

findings.

on luminaire selection in isola-

In 1992 Royal Life Holdings opened their highly innovative new Headquarters in Peterborough in the UK, designed by Arup Associates. There was already recognition, re-inforced by the success of this building, that direct/indirect lighting provided a preferable airy, attractive workplace. Especially when considering the alternative gloom, so well illustrated here, of the lower height spaces alongside, fitted with the standard solution at the time – Category 2 downlighters.

tion, rather than considering the

At Zumtobel Staff we question

entire office environment in a

this approach. We would argue

holistic way.

that research indicates that

AWB_Workplace_Q_Produktb_UK.qxd

02.05.2005

10:39 Uhr

Seite 12

The Lessons of Lighting Research

Light Right test site – In the most comprehensive study of its type researchers found overwhelming user preference for direct/indirect lighting systems.

1. Getting the Light Right The “Light Right” Consortium

In probably the most compre-

space as more attractive, are

To quote Ron Lewis, chairperson

hensive study of its type con-

happier, and are more com-

of the Light Right Consortium,

ducted in Albany, New York,

fortable and satisfied with their

“Lighting does matter. We have

researchers found that:

environment and work.”

sampled major US corporations

• “This is the first time that

and found a strong connection

is an independent authoritative research body in the USA, managed by the Pacific Northwest National Laboratory and

• Good lighting improves productivity* • 29–31 % of people under

supported by the Illuminating

downlight only systems rated

Engineering Society of North

them as uncomfortable

America, the International Asso-

• 91 % of people were comfort-

ciation of Lighting Designers,

able with a system of direct/

the International Facility Man-

indirect, wall washing and

agers Association, the US Department of Energy and the

dimming control • Dimming control over work-

US Environmental Protection

station lighting “increased

Agency, amongst others.

motivation” and allowed users to “sustain their persistence and vigilance over time”, and be “more accurate” • “People who are more satisfied with their lighting rate the

this complete path has been

between lighting, productivity

demonstrated”

and its overall value to businesses.” * The Light Right website (www.lightright.org) reproduces the research and results. Co-author of the Light Right research: J.A. Veitch. She is much respected for this and other work done with the Institute for Research in Construction, Ottawa.

AWB_Workplace_Q_Produktb_UK.qxd

02.05.2005

10:39 Uhr

Seite 13

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

13

DIAL research test site showing two examples below where accent lighting materially improved user perception of the space, compared with the conventional scenarios above.

2. Accent on Interest

pictures and also onto desks, using spotlights or other point sources, were preferred over

DIAL, the German Institute of

all other scenarios. This finding

Applied Lighting, is an extremely

fits well with one of the central

reputable and influential re-

principles of Zumtobel Staff’s

search body, which also produ-

approach – that the best results

ces DIALUX, one of the leading

are obtained by a combination

lighting industry software pro-

of different types of luminaire,

grammes. In 1999 it carried out

which might include accent

research into user preferences

lighting (see Products and

for a number of office lighting

Resources).

scenarios, using a variety of luminaire types (see photos). Subjects’ assessments were made in terms of functionality, impression of brightness and the overall attractiveness of the space. One of the central findings was that office scenes which contained additional accent lighting, particularly onto

The Lessons of Lighting Research

The Fleischer research found that our preference for quantity and type of light varies according to task.

3. Dynamic Lighting for Stimulation Susanne Fleischer is a promi-

Fleischer found a clear relationship between lighting conditions outside and inside. People prefer warm direct lighting when the sky is overcast, and indirect cool lighting when sunny.

that “cool” colour temperature

Fleischer concludes: “… It is

lighting was more stimulating

possible to draw up variable

than “warm” colour tempera-

lighting situations … which pro-

tures.

vide an appropriate response

The final body of research with

to the requirements for type of

important implications for office

nent German researcher who

4. “Cool” Light for the “Third Eye”

until recently worked at the

The implication is that a static

activity, activation and well-

lighting has recently emerged

Institute for Hygiene and Occu-

lighting scene throughout the

being”. And again “It is therefore

from a number of research cen-

pational Physiology in Zurich.

day, is not the best way to moti-

possible to create lighting scena-

tres, including Brown University

She is the former head of the

vate and enhance performance.

rios for office applications which

in the USA. The main findings

“Lighting Harmony” research

More desirable is a lighting sys-

are ergonomically appropriate

are that, firstly, light does not

project, which has found that

tem that can vary not just the

and, moreover, which have a

simply affect the human body

people’s mood, motivation, per-

level, but also the ratio of

positive effect on people’s sub-

through our sense of vision. It

formance and feelings of satis-

uplight to downlight, as well as

jective well-being.”

appears that we also possess a

faction vary throughout the day,

varying the colour temperature.

so-called “third eye”, a unique

depending on interior and ex-

These functions are possible

non-visual photo-receptor cell in

terior light levels and their own

with Zumtobel Staff lighting

the retina directly linked to the

internal circadian rhythms. In

systems and are covered in

pineal gland, which in turn regu-

particular she found that people

our pages on Active Light and

lates our bodily cycles.

preferred direct lighting when

Balanced Light starting on

the sky was overcast and indi-

pages 34 and 35.

What is particularly interesting is

rect lighting when the sky was

that this cell is especially res-

clear and sunny. She also found

ponsive to certain types of light,

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

Research shows that the “third eye” receptor is far more responsive to light at the blue end of the spectrum as shown.

at the blue end of the spectrum

York suggests that 18 lux of

(410–460 nm). Exposure to

blue light is more effective at

blue, or “cool” blue-tinted light,

lowering melatonin levels than

seems to encourage the pineal

450 lux of white light.

Levels of attentiveness vary over a 24 hour cycle.

Where the Research Takes Us

• Should have forms of control that allow for varying light levels and distribution patterns

gland to suppress the produc-

The implications of this body

tion of melatonin (which makes

of research for office lighting

us sleep) and therefore impro-

design are clear:

ves alertness. And the light

• Offices should ideally have

doesn’t have to be very bright –

direct/indirect lighting systems

recent discoveries at the Light-

and wall washing

ing Research Centre in New

15

• Lighting should always be

according to time of day and outside conditions • A degree of local control is desirable • “Cool” colour temperature lamps are best for maintaining alertness and performance.

achieved with a mix of luminaires

visual pathway (images) photobiological pathway blue light (especially) suppresses melatonin

Current Guidance and its Limitations

Pentland International plc’s new North London headquarters – this 2003 British Council for Office’s Best of the Best Award winner features considerable lighting ingenuity. Architect: GHM Rock Townsend, Building Services: Fulcrum

Unfortunately, as we will see, most of the current codes

1. The BCO Fit-Out Guide

(CAT A) and Category B (CAT B) fit-outs for speculative office buildings – a distinction we

are either in conflict with one another – or don’t measure

The British Council for Offices

refer to throughout this publica-

up to the findings of current

is a hugely influential body that

tion. The box at right summaris-

research, being founded more

represents the main players in

es this distinction. Lighting is

on outdated prejudices and

office development. Its Fit-Out

included in the CAT A fit-out

half-understood ideas.

Guide*, which is regularly up-

provision, as part of “basic

dated in the light of new evi-

mechanical and electrical servi-

dence and changing market

ces”, despite the fact that it is

conditions, is written by people

impossible to know the final

who are both pragmatic and

users’ needs and furniture confi-

market-led. Due to the growing

guration at that stage. It is,

influence of the BCO, its guides

however, again mentioned

are rapidly pushing other

under CAT B as part of “Mecha-

Codes, such as those generat-

nical and electrical services

ed by CIBSE, to the margins.

tailoring and upgrades”.

CAT A and CAT B Fit-outs Explained A CAT A fit-out is the most basic fit-out (including floor coverings, ceilings, floors, M&E, WCs and most importantly, lighting) undertaken by the developer and/or letting agent to sell the space in a speculative development. It is based on an open-plan working scenario but is usually potentially sub-divisible, if necessary. As soon as a client has been found, he will take on the open-plan

One of the important distinctions the BCO makes in the latest Fit-Out Guide (October 2003) is between Category A

* The BCO also publish a Best Practice Guide, the 2005 edition to which Zumtobel Staff has contributed.

specification – or will commission a different fit-out.

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

17

Wessex Water, near Bath, U.K. This building is one of very few ever to have achieved an “Excellent” rating under the BRE Environmental Assessment Method. Wessex Water was the first ever to achieve the highest possible rating of 10. Architect: Bennetts Associates, Building Services: Buro Happold

A CAT B fit-out is a bespoke fit-out commissioned if the client comes on board at an early stage – or after the CAT A fit-out has already been installed. It may include a new lighting scheme, blinds, partitions, IT systems, telephones, wall finishes etc. Often, but not always, the CAT A scheme, including the

In fact, as yet, lighting is not a

no added value in appointing

lighting schemes, to cope with

major priority for the BCO –

specialist lighting designers for

future change, with addressable

there is no specific mention of

the lighting fit-out of the areas

lighting controls and modular

lighting on the Contents page of

where most ordinary staff work

lighting systems. In its summary

the current Fit-Out Guide – it is

for most of the day. When they

of the different types of lighting

instead lumped in with “Building

do appoint them, they do so

system available, it does give

Services”, so advice is difficult

only for the specialist areas of

suspended, or freestanding,

to find. When you do find the

the shell-and-core, such as the

direct/indirect systems the high-

small section on lighting, the

entrance area and the atrium.

est recommendation.

mences with the following

For the rest the BCO Guide is

Daylight use and control is

important observation:

the only UK advisory document

briefly mentioned – and there is

that refers to VDT screen testing

an awareness of the issue of

message is mixed, but it com-

lighting, will be ripped out and everything re-specified from scratch. For obvious reasons, a CAT B fit-out will usually cost more than a CAT A scheme.

“Design guidance is no longer

and the recommendations of

glare. The Guide states “use of

prescriptive and allows consider-

EN29241-7 (see page 26). It

blinds … should be considered

able freedom for a suitably quali-

also proposes varied lighting

early on in the design process”.

fied and experienced designer

levels between 500 and 300 lux

Zumtobel Staff would take this

to produce certified, compliant

with provision for task lighting

further – in fact, on page 32 we

schemes of the quality required.”

for the visually impaired and

make a strong case for blinds

energy use targets for lighting in

being included as part of the

Unfortunately, as we have alrea-

CAT A fit-outs of 12 W/m2.

CAT A fit-out.

dy discussed, developers see

There is an emphasis on flexible

Current Guidance and its Limitations

Part L encourages the use of direct-indirect luminaires. Video Arts. Building Services: Downie Consulting

2. Building Regulations (Part L) for Commercial Buildings

The first thing to say is that the advent of Part L has made many professionals concentrate

The BRE “Ideal office” is their own signature office and makes full use of indirect-direct lighting, even being incorporated under the downstand areas. The wave-form ceiling provides a very even fall-off of ceiling luminance.

3. BRE Environmental Assessment Method (BREEAM)

exclusively on designing for

Credits are awarded against the criteria and an overall score rates the building as “Pass”, “Good”, “Very Good” and

The Building Regulations (Part L)

energy savings at the expense

For over a decade, the BRE’s

“Excellent”. On the BREEAM

for Commercial Buildings, 2001,

of other criteria. Lighting design

Environmental Assessment

for offices checklist, the salient

as applied to lighting, are the

driven solely by energy use is

Method (BREEAM) has been

criteria related to workplace

British government’s latest rather

not necessarily good design.

used to assess the environ-

lighting and visual conditions are

blunt instrument for cutting

For example a scheme using

mental performance of both

included in the section “Health

energy use in buildings, to com-

only direct downlighters may

new and existing buildings. It is

and Well-being”. Some of these

ply with the Kyoto agreement on

well comply with Part L, but it

regarded by the UK’s construc-

are already standard practice,

climate change. In summary, for

will not create visually comfor-

tion and property sectors as

but some are not so well known:

commercial buildings (with some

table working conditions for

the measure of best practice

minor exceptions) Part L speci-

people who work there. Good

in environmental design and

fies a maximum energy use of

lighting design is lighting desig-

management. The building

40 luminaire lumens per watt

ned for people, who in the long

types covered by BREEAM are

averaged across the entire buil-

term are much more important

offices, homes, industrial units

ding (and according to recent

than energy savings – but there

and retail units and the pro-

controlled system of glare

government statements, this

is no reason why good, visually

gramme’s main criteria concern

control (e.g. internal or exter-

may be increased by 25 % in

comfortable lighting designs

energy use and health and well-

the near future).

can’t easily comply with Part L.

being, amongst other things.

• At least 80 % of the net lettable floor area should be adequately daylit. • There should be an occupant-

nal blinds). • High frequency ballasts should be installed in office luminaires.

19

Photo: RT Rafn Sigur∂sson

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

This European installation would undoubtedly score “very good” or better under the BREEAM rating system.

• Maintained lighting levels

Under the Energy section, there

should be between 350–400 lux

is no specific reference to the

and the louvre design should

traditional measure of power

comply with the LG3 Adden-

usage (W/m2) nor to Part L’s term,

dum 2001.

Luminaire Lumens per Circuit

The LIGHT FIELDS suspended direct/indirect range incorporates the MPO (micro-pyramidal optic) to ensure glare-free lighting whilst having a very high LOR (up to 86 %).

• The provision of high frequency dimming ballasts as a minimum in perimeter zones. • Localised task area lighting instead of uniform lighting.

Watt. Rather, BREEAM predicts

• Mandatory daylight dimming

open-plan office spaces,

energy use and measures these

controls where the Daylight

where there is circulation

in CO 2 emissions (see page 45).

• Control systems for lighting in

Factor exceeds 2 %. • Lighting systems that have

space and daylighting, should

gained high user preference in

be zoned into groups, with

BREEAM’s programme is an

any one lighting group cover-

important and worthy initiative

ing no more than four work-

in the push to improve our

places.

commercial building stock.

on louvre fittings, which

recent research surveys. • Amendment of the emphasis

However, if BREEAM is indeed

seems to mitigate against

a view outside (open air or

promoting Best Practice, it

other lighting solutions, such

atrium) with a maximum dis-

should incorporate the following

as direct/indirect systems,

tance of seven metres (approxi-

design measures in its checklist:

which the BRE has installed in

• All workstations should have

its own signature building! In

mately two office desk spaces) to the nearest window.

• The installation of blinds as

any case LG3 expressly exclu-

part of the Cat A fit out,

des compliance by luminaire

because they are expensive

selection only.

additions at the Cat B stage.

Building Services: Jones King

Current Guidance and its Limitations

The latest generation of MELLOW LIGHT (IV) showing excellent wall and ceiling luminance.

This Highly Commended installation was designed by Pinniger & Partners in 1993, predating the LG3 Addendum by 8 years. This is simply a Category 3 luminaire modified by a dropped defractor to put light on walls and ceilings.

4. SLL (CIBSE) Code for Lighting

5. SLL (CIBSE) Lighting Guide 3 (LG3) – The Visual Environment for Display Screen Use

The CIBSE SLL Code for Light-

rating system for luminaires and instead introduced a “Certificate of Conformity”, which addressed all the relevant issues, and required the room, not the lighting

ing is one of the best, most

equipment, to Comply with LG3.

comprehensive textbooks avail-

LG3 is probably the most used

able on the lighting of interiors.

document over the last decade

It includes not only detailed

in terms of lighting specification

While retaining some of the use-

schedules of illuminance for

for offices. The document com-

ful design tenets of the earlier

different types of space, it offers

prises an erudite dissertation on

LG3, including the need to put

a welter of good lighting design

the issues, problems and solu-

light onto walls and ceilings, the

advice, a survey of various

tions of lighting spaces for

Addendum adopted very odd

visual effects and an extensive

VDTs. The document has, how-

criteria for ceiling lighting – and

glossary of terms.

ever, been generally misapplied

missed an opportunity to up-

in that users ignored the objec-

date its advice on VDT screens:

tives of lighting the room but rather defaulted to compliance

A. The latest LG3 puts too

by luminaire selection only.

much emphasis on lighting the walls by prescribing a task/wall/

To counter this problem the SLL

ceiling illuminance ratio of

issued an Addendum in 2001

100/50/30. However, wall illumi-

that dropped the “Category”

nance really only has significance

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

Arup Associates own offices illustrate the benefit of direct-indirect lighting despite the low ceiling height.

With no view to the exterior this training centre is saved by the direct-indirect lighting solution.

for the visual appearance of

up to the ceiling?). And the best

As long ago as 1997 BS

cellular offices (where much of

way to ensure a bright ceiling is

EN 29241-7 (Ergonomic Requi-

the wall area is likely to be gl-

by using direct/indirect lighting

rements for Office Work with

azed in any case). In the vast

systems. Situations where a

Visual Display Terminals) recom-

majority of offices, which are

direct/indirect approach is not

mended screen testing, to dis-

open-plan, the walls are gene-

possible, due to low ceiling

cover the actual glare limits of

rally too far away to make much

heights, are discussed on page

individual types of screen, but

of a contribution to the visual

50–51.

LG3, written four years later,

scene.

21

does not recommend this course B. More importantly, LG3 is

of action – instead it has arbi-

We would argue that in terms of

still fixated on lighting for VDT

trarily chosen a fixed upper

the visual appearance of most

screens rather than people,

luminance limit on fittings of

office spaces, getting light onto

whereas recent advances in flat

1500 cd/m2. This figure was not

the ceiling is far more important

screen VDT technology threaten

chosen on the basis of any

as the large area of the ceiling

to make this issue a dead duck

genuine research and is already

dominates the peripheral vision.

within two years. Most modern

massively out-of-date, as the

However, ceiling brightness is a

positive (black on white) flat

real figures for different VDT

luminance issue, not a question

screen VDT terminals are not

screens in the Table on page 25

of illuminance (is LG3 compliance

susceptible to luminaire reflec-

show. Some modern screens

really going to be tested by

tions – but in any case they can

can now tolerate luminances

engineers standing on desks,

be easily tested to determine

above 5000 cd/m 2 without cau-

holding their illuminance meters

their actual susceptibility.

sing visual discomfort.

Current Guidance and its Limitations

To avoid gloom, increase the percentage of light on the ceiling far beyond the recommended levels.

6. SLL (CIBSE) Lighting Guide 7 (LG7) Office Lighting Guide

the illuminance ratio of the

Pillars and air-conditioning are two more considerations when designing “task area” lighting.

7. BS EN 12464-1

ceiling to the working plane

One major development embodied in BS EN 12464-1 is that

should be 20 % – another 10 %

BS EN 12464-1 has recently

the concept of “maintained illu-

lower than even LG3 and the

been published as a British

minance” and the UGR glare

The draft copy of this document

BCO Guide – which would

Standard in an endeavour to

index system have been intro-

is fairly extensive, but few people

de-prioritise the lighting of the

harmonise lighting standards in

duced to Europe for the first

will find the document of great

ceiling even further.

Europe – an effort that has

time, although the UK has been

interest. In fact it is unclear why

taken many years. EN 12464

familiar with these for years.

it has been produced at all,

does not give detailed design

EN 12464-1 also contains an

except as a fund-raising mea-

advice and in this regard the

extremely low (1000 Cd/m2) VDT

sure. LG7 has all the hallmarks

SLL Code for Lighting (see

luminance limit which is clearly

of being written by a committee

page 22) seems set to remain

nonsensical today, but probably

over an extensive period of time

the “bible” of applied interior

reflects the time the document

– for example, all the criteria

lighting.

took to prepare and produce.

relating to VDT lighting remain the same as LG3 Addendum 2001. However, there is no mention of EN 12464-1 or EN 29241 and most of the commentary is very basic and elementary. Most worryingly, it makes a recommendation, that

task height = 0.75 m

use

r flo

area

or-a

rea 1.00 m

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

23

Lighting for People: MELLOW LIGHT IV Balanced offers the opportunity to alter the colour temperature throughout the day in response to user preference.

BS EN 12464-1 strongly encourages designers to adopt “task

8. The Disability Discrimination Act

9. Conclusion

ced lighting research offer a

area” lighting (known in the UK as localised lighting) which is the While it is not possible to dispositioning of luminaires over, or cuss all the measures pertaining close to, the main working area.

to lighting and the interior en-

This is defined as the desk area, vironment embodied in this Act, plus the notional chair zone, as

we firmly believe that lighting

depicted in the diagram oppo-

that has been well designed,

site. It proposes lighting to

according to the approach spelt

500 lux within the task zone,

out in this brochure, should

reducing to 300 lux elsewhere.

meet all the necessary requirements. However, it should be

Localised lighting systems have

stressed that designers should

long been considered in the UK.

take cognisance of the Act,

Reduced power density and

and the needs of the visually

energy usage make them attrac-

impaired, when proposing a re-

tive but they do require the

duction in workplace light levels,

designers to know the space-

for energy-saving or other pur-

planning at early concept stage.

poses.

This is not likely in the speculative developer led UK market.

the findings of the most advan-

Many of the current lighting

more solid starting point for

codes and recommendations,

lighting excellence, than out-of-

most notably LG3, LG7 and

date codes and confused and

Part L, are way behind con-

contradictory recommendations.

temporary lighting research –

In the following Section, we out-

and on the whole, do not offer

line our distinctive approach to

effective guidance to produc-

some of the central issues.

ing quality lighting design for the workplace. Others, such as the BCO Fit-out Guide and the BREEAM proposals, are flawed but also have much to commend them. On the whole, Zumtobel Staff prefers to base its approach to lighting design on the principle of lighting for people and their visual comfort. We believe that

Key Issues in Workplace Lighting

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

When thinking about office light-

rather than within the confines

itself but in the patterns of

ing design, there are a number

of the orthodox, but misguided,

shadows, the light and the

of key issues that need to be

recommendations embodied in

darkness, that one thing

considered. In this section we

the codes, we will demonstrate

against another creates.”

look at these issues in the light

that more pleasant, visually

– Jun’ichiro Tanizaki, In Praise

of the most recent research out-

comfortable and stimulating

of Shadows

lined above – and put forward

office spaces can be created as

our considered design recom-

a result, while at the same time

mendations and solutions. By

achieving a Certificate of Con-

designing “outside the box”,

formity.

“We find beauty not in the thing

Blurred Image

Increasing tolerance to reflections Reducing tolerance to reflections

Sharp Image

Lmax (cd/m 2) positive

Type

Make and Model

Date of manufacture

Class

9500 4900 4400 3800 3700 3700 3500 3500 3200 3100 3000

CRT FPD FPD FPD FPD CRT FPD FPD FPD CRT FPD

LG Flatron 915 FT Plus Nokia 500Xa 15" FPD Compaq TFT 5005 15" FPD LG Flatron LCD 575 MS 15" FPD NEC Multisync LCD1760NX Samsung Syncmaster 700 IFT 17" CRT NEC Multisync 1810X Nokia Pro 800+ 18" FPD Dell Ultrashop 1504FP Ilyama LS902UT Visionmaster 1451 NEC 208UX+

Dec-02 Jun-99 Oct-00 Nov-00 Apr-03 Nov-99 Nov-01 Oct-99 Nov-02 Feb-02 Nov-03

I I I I I I I I I I I

2700 2500 2200 2000 2000 1900 1800 1700 1700

FPD FPD CRT FPD LAPTOP FPD FPD FPD FPD

Ilyama TXA 3813MT 15" FPD NEC 1980X Compaq 7500 PE1163T LG 560LS Toshiba Tecra 8000 LAPTOP Samsung Syncmaster 700 TFT 17" FPD LG Studioworks 500 LC 15" FPD LG 1510S Samsung 15" FPD

Not Known Jan-04 Feb-02 Jun-01 Jun-98 Not Known Feb-99 Aug-02 Not Known

I I I I I I I I I

1400 1400 1300 1200

FPD CRT CRT CRT

LG3:2001 B2.1 1500 cd/m2 limit LG Studioworks 880 LC 18" FPD Dell D828L 14" CRT Samsung Syncmaster 753s Samsung Syncmaster 550s 15" CRT

Dec-99 Dec-97 Oct-01 Not Known

I II I I

900

CRT

LG3:2001 B2.1 1000 cd/m2 limit AOC 4NLR 14" CRT

Jan-95

I

Please visit our website for further details: http://www.zumtobelstaff.co.uk/screentesting

“Standards and Regulations are out of step with Current

1. Taking the Screen Test Results

Research” – Bob Venning, Director of Arup The luminance limitations given in LG3 are not emphatically Lighting, LEN April 2004

Above is a table of actual measured data for many types of screen. The screens were originally tested following Lloyd, Mizukami, Boyce, A preliminary

derived and bear no resem-

model of lighting display interac-

blance to actual fact.

tion 1995 and more recently BS EN 29241-7. Ergonomic requirements for office work with visual display terminals.

25

Luminaire types with enhanced brightness

Brighter luminaires = Light, airy, upbeat environment Darker luminaires = Gloomy, oppressive downbeat environment

Typical “Cat 2” modular downlight

Key Issues in Workplace Lighting

Layout of Zumtobel Staff’s screen test laboratory.

1. Taking the Screen Test – Conclusion

office lighting scheme around mere supposition. So we offer a

Since time immemorial luminaires with a sidelight component (opal diffusers in this case) have contributed to the appearance of ceiling brightness.

2. Putting Light on the Ceiling

“Ceiling Brightness Impression” or CBI for short, which takes into account the visual bright-

service to all our clients to have As we have already demonstrat-

a sample VDT screen tested at

On previous pages we discussed

ness of the fittings themselves

ed, the correct procedure for

our state-of-the-art facility.

the importance of putting light

as contributors to the overall

on the ceiling, in terms of the

brightness of the ceiling.

VDT screens is not to set an

More recently ISO BS EN 13406:

overall visual brightness of the

Erroneously, this is something

arbitrary figure but actually to

2002 entitled Ergonomic requi-

space. This is best done with

that CIBSE and SLL have pre-

test them, as recommended in

rements for visual display units

direct/indirect luminaires, offering

cluded in LG3.

BS EN 29241-7 Ergonomic

based on flat panels has been

variable ratios of lighting distri-

Requirements for Office Work

introduced. BS EN 13406:2002

bution, which can be digitally

So let’s examine a user’s real

with Visual Display Terminals,

is based on the same basic prin-

controlled for different condi-

visual impression of two office

1997. Some of the latest results

ciples as BS EN 29241 but with

tions and times of day.

spaces. In this visual test, there

for modern screens are shown

additional measurements and cal-

in the table on page 25. In fact

culations required. These are

However, as we have already

equipped, firstly, with recessed

in the UK only Zumtobel Staff

included in the Zumtobel Staff

discussed, this is not always

louvre light fittings and, secondly,

currently undertakes screen

testing of such screens.

possible, due to low ceiling

with recessed dual component

heights or the requirement to

fittings, both seen from normal

determining the glare limits of

brightness tests, according

are two vistas of the same office

to the recommendations of

Contact our Technical Depart-

maintain an existing grid of

viewing angles. It is quite clear

BS EN 29241-7. We believe this

ment for more details.

recessed luminaires. Here we

that the ceiling in the second

is the correct course of action,

www.zumtobelstaff.co.uk/

recommend an alternative

installation appears considerably

rather than designing the entire

screentesting

design approach which we call

brighter, even though the illumi-

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

27

Dark louvred fittings give an impression of a dark ceiling while self-luminous luminaires quite evidently make the ceiling appear brighter.

nance of the ceiling surfaces is

To demonstrate further the

LIGHT or SYNTO, make a

Guide) “the creation of a com-

the same.

importance of CBI, Zumtobel

strong contribution to the CBI

fortable, stimulating visual en-

Staff has developed special

of a space, whereas non-self-

vironment by careful control of

The only conclusion is that the

software based on the repu-

luminous luminaires (such as

surface brightness and contrast

brightness of the luminaires

table, well-established CIE Glare

standard “dark light” louvres)

ratios”, how can CBI not be

themselves makes a real contri-

Algorithm, to enable accurate

have a negative effect on CBI.

taken into account?

bution to the ceiling’s overall

calculations to be made of the

In both cases the CBI effect

brightness, because the eye

exact additional brightness

must be taken into account,

For further information about

combines the different bright-

gained from the use of self-lumi-

because brightness contrasts

CBI or information on our CBI

ness contrasts within the field

nous, dual component fittings.

strongly influence the cognitive

calculation software, go to our

of view. This is the principle of

The results come in the form of

experience of a space and a

website:

the term Ceiling Brightness

a table of CBI values for lumi-

users’ appreciation of its visual

www.zumtobelstaff.co.uk/CBI

Impression (CBI). The use of

naires viewed both crosswise

quality.

self-luminous, dual component

and endwise, which can then be

fittings can be seen to have a

added to the existing percen-

There is no logic to CIBSE and

positive effect on how the en-

tage of task illuminance on the

SLL’s refusal to allow luminaire

vironment appears – and, at the

ceiling, to derive the total ceiling

brightness to be considered as

same time, dark, non-self-lumi-

brightness (see website for

an important, contributory factor

nous luminaires can have a

more details).

in the apparent brightness of the ceiling. If the overall objec-

negative effect on CBI. In conclusion, dual component

tive of any lighting design is (in

luminaires, such as MELLOW

the words of the BCO Fit-out

Key Issues in Workplace Lighting

AWB_Workplace_Q_Produktb_UK.qxd

03.05.2005

11:20 Uhr

Seite 29

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

29

We feel that the Declaration

3. Walls in the Cellular Office

4. Guaranteeing Conformity

The lighting of walls becomes a

The concept of the Declaration

good designers the freedom to

major issue in cellular offices,

of Conformity, to be signed by

work “outside the box”, to pro-

which tend to be the premium

designers at the end of a light-

duce creative, visually interest-

office spaces arranged around

ing project, to guarantee its

ing lighting schemes. In such

the perimeter of the building.

compliance with codes on ergo-

cases, only trained, experienced

Most often two of the four walls

nomics, health and energy use,

members of the CIBSE Society

will comprise windows and

was proposed in the latest LG3

of Light & Lighting (SLL), the

glazed interior partitions. The

document – probably in too

International Association of

window wall will require effec-

hurried a fashion, without suffi-

Lighting Designers (IALD) and

tive, light-coloured blinds for

cient consultation. As a result

the European Lighting Design-

solar control by day and to aid

take-up has been patchy, partly

ers’ Association (ELDA) should

the lit effect after dark, when

because it is not a legal obliga-

be given the responsibility for

they serve to reflect light back

tion and designers are worried

issuing a Declaration of Confor-

into the room, rather than the

about it affecting their professio-

mity to LG3 or Part L.

window appearing as an unlit

nal indemnity. The main drivers

dark hole.

of the Declaration of Conformity

of Conformity is a useful vehicle for allowing and encouraging

are Zumtobel Staff and the We would generally recommend

BCO, whose Fit-Out Guide calls

multi-component luminaires for

for the artificial lighting to be

such spaces to increase the

“provided with a Certificate of

degree of ceiling brightness –

Conformity to LG3 and Part L”.

these could be direct/indirect systems or dual component fittings (see page 50). Where downlighters are used, it is important to select one of the interior walls and make sure that it is well lit, through the use of additional perimeter wall

Society of Light and Lighting

International Association of Lighting Designers

washers.

Without windows, providing good illuminance on some walls makes all the difference.

LG3 2001: Certificate of Conformity

European Lighting Designers’ Association

Natural Light, Active Light & Balanced Light

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

“Surfaces define the shape of our world; light allows us to

1. Working with Daylight

see them.”

31

Diffuse daylight from an over-

during this process, of lighting

cast, but possibly still quite

quality. This is because lighting

bright, sky solves many of the

control system sellers are, in the

– George M Whiteside, On the

While artificial lighting has be-

problems associated with direc-

main, electrically biased, rather

Surface of Things

come increasingly sophisticated

tional sunlight. The light quality

than qualified in lighting. They

in recent years, it can’t compare

is generally diffuse with slow

tend to consider energy as the

with our greatest light source –

rates of change and reduced

number one, easily quantifiable

daylight. Daylight and sunlight is

contrasts.

target, while issues such as glare, contrast and the psychol-

free, unlimited, non-polluting and full of variety – and research

Despite the contribution daylight

ogy of the lit space, do not im-

shows that access to daylit

can make, modern artificial

pinge on their thinking. Zumtobel

views is seen as highly desirable

lighting is nearly always planned

Staff believes that simply dim-

by office users.

with the “worst case” scenario

ming down or switching off

in mind – i.e. that it is completely

artificial lighting, as daylight

So on visual comfort and energy-

dark outside. Many buildings

increases, is an over-simplified

saving grounds, any modern

employ conventional switching

approach – in fact, in many

workplace must recognise the

techniques which often mean

situations it may be desirable

presence and desirability of day-

that all the light fixtures remain

to increase the light output of

light – and should be designed

switched on, irrespective of the

artificial lighting as daylight

to make best use of it, in a fully

daylight state. More sophisti-

increases.

integrated manner.

cated buildings often employ various forms of photocell-based

However, natural daylight pro-

lighting control system, which

vides both a threat and an

are, on the whole, usually speci-

opportunity. Direct sunlight can

fied to achieve one purpose

create uncomfortable visual

alone – energy savings. This

conditions – excessive illumi-

usually means that as daylight

nance, discomfort and disability

increases, artificial lighting is

glare, screen reflections, and

dimmed; and when daylight

sometimes constant, rapid

reaches a sufficient level, it is

change – as well as thermal dis-

eventually switched off.

comfort. Brightness contrasts within a space can be consider-

While the energy savings accrued

able for people moving in and

by such a system are signifi-

out of a direct sunlit area.

cant, little account is taken

Natural Light, Active Light & Balanced Light

The highly sophisticated blinds used here turn conventional wisdom on its head. When fully open they allow an unrestricted exterior view but with possible glare issues. The compensation for this are the bright interior surfaces.

When the blinds are fully closed the view out is partially preserved and the glare threat eliminated. However, contrary to conventional thinking, ceiling illuminance is increased because the blinds are designed as “sun scoops”.

We also believe that the provi-

lit effect within the space.

provided in the basic Cat A fit-

sion of blinds should be part of

Without blinds, the windows

out for office developments (see

the fundamental lighting design

become “black holes” after

page 16–17). Instead, they tend

package for any building. While

dark, allowing a great deal of

to be provided as part of a Cat

blinds are conventionally seen

wasted light to exit the building.

B, tenant fit-out after the lighting design and installation has

as part of the architectural design, their relevance to lighting

Manually controlled blinds are

long been completed. A sub-

should not be under-estimated.

the norm but experience shows

standard, uncoordinated result

During the day properly desig-

that user positioning invariably

is almost inevitable.

ned, light coloured blinds can

leads to a chaotic and messy

be used to maximise the advan-

appearance. Electrically operat-

tages of daylight, while avoiding

ed, automatically controlled

the downside of glare – and

blinds are normally outside the

at the same time, they can pre-

scope of ordinary control sys-

serve important exterior views

tems that typically use internal,

from inside the building. Particu-

room photocells which cannot

larly in small cellular offices,

cope with sophisticated require-

they also have a vital role to

ments. The provision of blinds,

play at night, by acting as light

preferably properly automated

reflectors on one, or occasio-

and controlled, is a fundamental

nally, two window walls, which

factor in the visual comfort of an

has a huge influence on the

interior. Yet they are seldom

33

Slaughter & May, London

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

These 2 photographs are of the same office but inside and outside the perimeter zone. The areas are functionally similar but are fundamentally different in their access to daylight and therefore require different but complimentary lighting approaches.

2. Lighting for the Perimeter Zone

closer to the centre of the

sections here tend to be solid,

types for the daylight and deep

building may experience the en-

so precluding rows of recessed

plan zones. Either area could

vironment as gloomy and poorly

downlight troughs.

use Combination lighting or

Moving into the building away

lit, due to the contrast of their

from the windows, we come

space with the perimeter.

across the “transition zone” or “perimeter zone” between natu-

In this situation there is a strong

rally lit and wholly artificially lit

argument for different lighting

interiors. This often neglected

systems to be used in perimeter

area is critically important in

and deeper plan areas, to ease

determining the appearance,

the transition from daylight to

feel and balance of the entire

artificial light. However, the

space. For a start, the contribu-

standard solution has been to

tion of daylight can, depending

apply a uniform, regular array

on the window design, remain

across both these areas, ignor-

significant even considerable

ing that they are completely

distances into the space. For

different (except at night). Alter-

example, while high levels of

natively there is a strong ten-

daylight within the perimeter

dency to put circular recessed

areas tend to create bright,

downlights along the window

upbeat environments, those

wall, for no rational reason

workers who are positioned

other than the fact that ceiling

Balanced lighting, both of which Where possible, Zumtobel Staff

could also be Active Light sys-

advocates designing specific

tems.

and different lighting layouts and

Full height windows allow high levels of daylight but the extreme risk of glare makes blinds essential. The choice of blinds in this situation follows good practice – they are light in colour and preserve a view. The artificial lighting illuminates all surfaces providing a good balance of brightnesses.

Natural Light, Active Light & Balanced Light

These two scenes show how, by using the LA TRAVE direct/indirect lighting system, the lighting ambience can be changed dynamically across the day to suit different conditions.

The best Active Light systems

carefully designed lighting

allow:

scenarios, based on the kind of

Daylight changes constantly in

• Changing intensity of light

research outlined on pages

quantity, directional characteris-

• Changing direction of light

12–16, can both enhance and

tics and colour. The Active Light

• Changing colour of light

echo exterior illumination – and

concept, pioneered by Zumtobel

• Changing patterns of daylight

enhance people’s motivation

3. Active Light

Staff, is an attempt to introduce

through blind control

an element of change into artificial lighting in order to mimic

At the same time, by taking

the patterns of daylight. Surveys

into account our “circadian

show that people prefer the

rhythms”, which are determined

dynamic, constantly changing

by our biological clock and

character of natural lighting and

synchronised by daylight, it is

the objective of artificial lighting

possible to influence human

ought to come as close as pos-

physiology and psychology, and

sible to this ideal.

thus increase motivation and performance. From an ergonomic point of view, it is desirable that the working environment changes over the course of the day, in order to enhance the attention of staff. A series of

and willingness to perform.

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

A balanced light installation which also uses most of the principles of Active Light.

4. Balanced Light

Dimming the two light sources

35

A combination of recessed dual component luminaires and perimeter downlights. A new standard at Canary Wharf.

5. Combination Lighting

(or components within a single The most important aspect of

fitting) gives access to quantity

Combination Lighting is a rather

the Balanced Light concept

variations, while the separate,

simpler lighting set-up which

is that it offers variable Flux

selective control of the direct

involves two or more types of

Fraction Ratios (FFR), which is

and indirect lighting compo-

luminaire to achieve any lighting

to say the potential to vary the

nents can be used to alter

effect – for example a simple

upward and downward lighting

fundamentally the directional

downlight, combined with a peri-

components. This can be achie-

character of the light. Equipping

meter wallwasher. In its simplest

ved using a single luminaire,

the luminaires with mixed colour

form, Combination Lighting

such as the Zumtobel Staff La

temperature light sources also

could be just bulk switched

Trave fitting, equipped with sep-

allows fundamental colour tem-

on/off, or separately switched,

arately controllable lamps for

perature changes, making it

or dimmed – and the FFR

direct or indirect lighting. This

possible to balance the colour

needn’t necessarily change.

allows almost infinite variation in

characteristics of the lighting

the character of the lighting.

from warm and homely through

Alternatively, Balanced Lighting

to cool and businesslike.

might be achieved by a combination of two luminaire types, such as a downlight and a freestanding uplight.

LUXMATE EMOTION Workspace combines intuitive control and extremely professional use of DALI technology without actuators and dimmers; a specific ACTIVE LIGHT script based on scientific and ergonomic knowhow can be prepared for office lighting.

Natural Light, Active Light & Balanced Light

This novel “partial” blind system is automatically activated at night and at certain times of the day. The suspended LIGHTFIELD luminaires create very even lighting to the ceiling, walls and closed blinds.

6. Controls The BCO Fit-out Guide states

Here the blinds are lowered sufficiently to filter out glare at high angles but allow sunlight to penetrate at low levels, preserving the wonderful patterns and shadows of daylight.

can be easily “fooled”, since

Even Zumtobel Staff Basic day-

Any artificial lighting deserves

they measure a combination of

light systems use sensors which

the use of lighting controls, the

natural and artificial light.

are aimed out of a window

most sophisticated of which

in order to register accurate

offer control of individual lumi-

that lighting controls are a fundamental part of lighting design.

While changing light levels are

changes in natural lighting,

naires, or even the individual

The simplest controls provide

desirable, the illogical fluctuation

rather than measuring a mis-

lamps within those luminaires.

energy savings and flexibility

of illuminance resulting from

leading combination of daylight

The controls software should

but more sophisticated systems

poorly designed sensors is one

and artificial light.

permit a variety of scenes to be

can be used to integrate day-

of the main reasons why day-

light in a more genuine way.

light control systems are often

The Basic daylight module then

at any time. For Active Light

Measuring incoming daylight

sabotaged by users. By con-

allows three separate groups of

situations, specific Active Light

and adjusting artificial lighting

trast, Luxmate Professional*

luminaires to respond differently

software, which is easy-to-use

levels accordingly seems like a

daylight systems use a roof-

to daylight. So, for example,

yet highly sophisticated, is

simple method of integrating

mounted sensor which measur-

a row of perimeter luminaires

essential.

artificial and natural light. Yet

es the quantity of light, its

illuminating the wall sections

user acceptance of this simple

direction and overall sky bright-

between the windows, or the

technique can be very low

ness, in order to register accu-

window mullions, could be

unless lighting controls are

rate changes in the amount and

programmed to dim up as day-

carefully designed. Most sys-

quantity of daylight and adjust

light increases. This will reduce

tems employ ceiling-mounted

the lighting and blinds automati-

the contrast between wall and/

sensors, which measure inci-

cally.

or mullions and the windows

dent light in the room – but they

pre-programmed and called up

themselves.

* www.luxmate.co.uk

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

These two photos show how scene-setting controls can create a totally different ambience and lighting balance within a space.

7. Scene Setting

which infers there should be several luminaire types, each

The value of scene setting as

performing a different function.

a lighting control technique

In this way users can generate

has largely been lost in recent

their own “stage sets” to create

years. Over-complicated con-

different lighting moods within

trols, which force the end user

the space, for different activities.

to default to factory pre-sets,

Realistically, such scene settings

coupled with poor understand-

can only be orchestrated when

ing by controls professionals

the space planning and function

of lighting issues, means that

of the room is known, and the

balanced and easy-to-use

interplay of blind control for

scene-set systems are few and

daylight is integrated into the

far between.

various scenes.

Scene setting is often misunderstood as being the ability to preset several different lighting levels of one luminaire type in a given room. Its real value involves the ability to choose different lit effects in a room,

Scene setting can even be applied to circulatory areas.

37

Photo: RT Rafn Sigur∂sson

Further Considerations in Workplace Lighting

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

“More and more, so it seems to me, light is the beautifier of the

1. Lamp Brightness

The chart below demonstrates

from Zumtobel Staff include the

the current range of T16, T26

Aero fitting, with the Eldacon

and compact fluorescent lamps

Panel which uses a technique of

It is an unfortunate fact that as

with their recommended bright-

“distributed” lamp image, and the

modern lamp sources get small-

ness threshold zones. If these

Mellowlight range, where the lamp

er and more efficient, their sur-

lamps are used in open fixtures,

is diffused by a Gridmesh optic.

face brightness increases – this

one should always consider

Several other Zumtobel Staff pro-

can be a problem with open

some form of lamp obscuration.

ducts have refractor accessories

light fixtures in an office, where

In general the brightness of

that can be added to mitigate the

a small, but very bright light

High Efficiency (HE) T16 flu-

problem of using HE T16 lamps.

source can create visual distrac-

orescent lamps at 15,000–

tion in the field of view. Even in

17,000 cd/m 2 are within tolera-

For this reason we would unequi-

luminaires with vertical louvres,

ble limits for direct viewing – but

vocally recommend specifying an

which reduce the sideways visi-

High Output (HO) lamps at

HE lamp, rather than its HO equi-

bility of the lamp, the view

between 25,000–32,000 cd/m2

valent, in any luminaire offering a

directly upwards into the fitting

exceed these limits, while TC-L,

direct view of an unshielded lamp

can be visually uncomfortable

TC-D and TC-T lamps are even

from any position in the work-

and can often be peripherally

brighter, at 30,000 cd/m2 up

place. In 600 mm modular lumi-

glimpsed as a distracting area

to a massive 70,000 cd/m ,

naires this is always an option. In

of brightness – what has been

depending on wattage.

addition, there are energy saving

building.” – Frank Lloyd Wright

2

benefits – as their name suggests,

dubbed “eyebrow glare”. This issue of lamp brightness is

Of course, many of the latest

HE lamps trade lower light output

much more significant in interior

luminaire concepts have human

for higher energy efficiency (in

spaces, where people are

visual comfort as the highest

fact, energy efficiency is about

working over a full working day,

priority – and therefore have

15 % greater for these lamps).

than in a circulation space or a

some form of integral lamp

However this is not always possi-

sales area.

obscuration device. Examples

ble – see page 41.

Luminance of Fluorescent Lamps

MPO technology incorporated into the LIGHTFIELDS range overcomes the lamp glare of even the latest light sources, with little effect on the LOR.

39

Further Considerations in Workplace Lighting

Optimum light output for T26 and T16 lamps is achieved at 25 °C and 35 °C respectively.

2. Lamp Operating Temperatures

of air handling luminaires – see 3. Air Handling Most contem-

Bypass air handling in the MELLOW LIGHT IV, with either TC-L or T16 lamp options, avoids any cooling of the lamp.

3. Air Handling with T16 and TC-L Lamps

porary office fittings are not only

mum air volumes for generic luminaire types are readily available.

Another important consideration

small in scale, commensurate

The issue of air return lumi-

in choosing lamps is the issue

with the T16 lamp itself, but

naires, still a popular option with

Please contact the Zumtobel

of operating temperature. In

their operating efficiencies are of

M&E consultants, is another

Staff Technical Office for

former times fluorescent lamps

significantly higher order than

important consideration.

advice

lost efficiency when used within

T26 or most TC-L lamp options.

enclosed luminaires – and lamp

Modern T16 lamps are designed

efficiency was improved by

for maximum efficiency at high

forced ventilation of the fitting,

temperature, so to draw chilled

for example by the return air

air across the lamps is likely to

from the air conditioning sys-

reduce operating efficiency by

tem. However T16 lamps are

as much as 25 %. Supply air can

designed to operate at higher

also be a problem when dischar-

temperatures and are therefore

ged in close proximity to a T16

most efficient within enclosed

luminaire. The diagram above

luminaires (see graph above).

shows a solution to the return

Most importantly, they cannot

air path that bypasses the lamp

be used in the return air stream

compartment altogether. Maxi-

AWB_Workplace_Q_Produktb_UK.qxd

02.05.2005

10:42 Uhr

Seite 41

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

4. Ceilings and their Influence on Lamp Choice

If a designer is faced with such a ceiling grid, our advice is to change to 750 mm luminaire size which can either fit into a

In an ideal world, lighting which

750 mm square ceiling grid, or

incurs an ongoing revenue cost

into a 1500 mm square tartan

in a building, should dictate the

grid ceiling.

choice of ceiling. However for good reasons to do with lettable

The 750 mm square luminaire

space, there is a growing trend

uses 600 mm T16 lamps in a

for 500 mm as the base building

luminaire variant that has extend-

module, which gives 1500 mm

ed flanges as shown in the pic-

multiples for partition choice.

ture above.

A 500 mm square luminaire

A fully updated matrix of these

size is not a good choice with

various options is available from

respect to lamp choice, because

our Technical Department.

it narrows the options to TC-L and TC-D lamps which have the

Contact us on:

relative high brightness and are

[email protected]

less efficient than current best practice T16 lamps.

41

AWB_Workplace_Q_Produktb_UK.qxd

03.05.2005

11:22 Uhr

Seite 42

Further Considerations in Workplace Lighting

2700 K

5. Colour in the Workplace The issues of colour and colour

6500 K

situation is now more compli-

(FFR), such as Zumtobel Staff’s

facilities, to help maintain sus-

cated as a result of three main

LA TRAVE fitting, are gaining

tained alertness.

shifts in technology and re-

greater acceptability. Here it is

search data:

possible to use a different

temperature in the modern

• Secondary Lamp Systems

(usually “cooler”) colour tem-

The latest version of the

workplace are increasingly

Firstly, premium offices will

perature lamp for the upward

acclaimed, and much-copied,

important to consider, as the

more often than not have a

component, and a “warmer”

MELLOW LIGHT system –

technologies for achieving

dimming facility, at least within

colour temperature for down-

MELLOW LIGHT IV – has the

such effects proliferate almost

the daylight zone. In the quest

ward focal glow (see page 35).

potential to incorporate sepa-

daily. Below we assess the

to match more closely the arti-

Thirdly, as explained on page

rate colour lamps, which can

most common techniques and

ficial lighting with daylight

15 there is much evidence

be used to create distinct

their associated problems and

within those zones, there is

from the so-called “third eye”

areas of colour, in addition to

opportunities.

now a wider acceptance of

research to support the use of

white light (above and below).

“cooler” colour temperatures.

extra high colour temperature

These might be used to add

Secondly suspended fixtures

lamps with a high blue con-

coloured highlights within an

with variable flux fraction ratio

tent, in 24-hour workplace

otherwise bland space.

• Lamp Colour Temperature The issue of lamp colour temperature is a perennial issue in office lighting design. In bygone days the usual choice

MELLOW LIGHT IV Balanced Surface-mounted luminaire

was a lamp with an “intermediate” colour temperature of around 4,000 K. However, the

Recessed luminaire

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

Balanced colour luminaires used in a refectory.

• Coloured Tints for Mood and

• Working with Self-Illuminat-

43

Colour changing: morning, noon and night

6. Discomfort Glare (UGR)

used where the “side view”,

Identity

ing Surfaces

While intense areas of satu-

ACTIVE LIGHT WALL systems

rated colour, which can be

or internally illuminated screens

Within the UK, the concept of

recommended glare limit for

visually distracting, are not

hiding RGB colour changers,

glare limits has been around

offices of UGR 19. If alternate

advisable for office spaces,

are the latest methods for

since 1961. However during the

luminaires are set endwise and

Zumtobel Staff does offer an

adding colour to vertical sur-

era of “low brightness” VDT

crosswise, very often the UGR

option for coloured additive

faces, such as walls. By using

louvre products, with very low

will be compliant.

tints inside some luminaires,

RGB colour mixing, a huge

UGRs, the subject was very

such as MELLOW LIGHT

palette of colours can be cre-

rarely addressed. Now with the

Please contact the Zumtobel

and PERLUCE. These can be

ated and distributed over even

growing prevalence of so-called

Staff Technical Office for more

used to add visual interest,

large surface areas. These can

“dual component” fixtures,

information.

to create distinctive moods

range from subtle pastels to

glare calculations are again

within the space – or to desig-

intense, saturated hues. The

necessary.

nate specific zones or work

use of intense coloured effects

functions, to aid team cohe-

could be most effective in pro-

The latest Dialux design soft-

sion and/or orientation in large

viding focus and impact in

ware offers a Glare calculation

buildings.

meeting spaces, break-out

module which is very useful.

zones or common parts. Or

One aspect of this programme

alternatively colour could be

is a new ability to calculate

used to mimic windows in day-

UGRs from an array of counter-

light-starved, deep-plan spaces.

rotated luminaires. This can be

which is the brightest aspect of the luminaire, exceeds the

Further Considerations in Workplace Lighting

CO2 EMISSIONS – a comparison 1 quantity 54 W T16 fluorescent lamp – 62.6 kg/annum* One large office building (1m sq. ft) – 1,000,000 kg/annum* One 747 return flight London to Singapore – 1,000,000 kg per return flight**

* “Calculated on the projected fuel mix for the grid 1998–2000. Actual figures may vary from the projections, but DEFRA (Department of the Environment, Food and Rural Affairs) plan to use a constant value until 2010.” ** See the UK’s 2002 National Atmospheric Emissions Inventory (NAEI) www.naei.org.uk for long haul flights

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

7. Energy

45

Watts per Square Metre per

relaxation of 20 % if the lumi-

The Kyoto Protocol, which be-

100 lux (W/m2/100 lux)

naires are “controlled”.

came legally binding in Feb. 2005, aims to curb and reduce the

The measurement of energy

We believe that this slightly

use is a crucial issue in today’s

more refined measure would be

Kgs of CO2 per Square Metre

emission of greenhouse gases,

post-Kyoto world. However, the

a better yardstick to use, as it

Per Year (Kg/CO 2/m2/Year)

particularly CO2, in an attempt to

various methods and formulae

starts to take into consideration

BREEAM has its own measure,

control global warming. In

for measuring energy use in

the efficacy of the luminaire it-

Kg/CO 2/m2/Year, which predicts

Europe (inc.the UK) the govern-

relation to lighting are both

self. Using this measure:

true energy use in terms of the

ments are taking the expedient

production of carbon dioxide

option by imposing energy restric-

confusing and in some cases, incompatible. In this section we

• A figure of 2.5 W/m 2/100 lux

(CO2). There is no direct refe-

tions on buildings and a Climate

chart the variety of techniques

would be good practice for

rence to limits on lighting, but

Change Levy on businesses,

of assessing energy/power

uniform lighting.

credit points are awarded accord-

whilst avoiding the more difficult

ing to a scale of overall CO 2

issues of e.g. banning fuel hungry cars, or taxing aviation fuel.

loading in relation to lighting,

• A figure of 2.0 W/m2/100 lux

and unravel their advantages

for uniform lighting would be

production. A mid-range score

and disadvantages.

indicative of “high output” T16

would be 60 kg/CO2/m2/Year. It

lamps used in very efficient

is interesting to note that to

However important energy

Watts per Square Metre (W/m 2)

luminaires, with a high direct

achieve 500 lux at typical spac-

issues are, consideration for the

Historically, energy use has

component. These would

ing, a 54 W lamp would gener-

employees in the buildings

been erroneously measured via

actually result in poor visual

ate 10.9 kg/CO2/m /Year – in

should take precedence. Fortu-

installed power loading, calcu-

conditions without some sup-

the UK a 54 W lamp burning for

nately visual quality need not be

lated in watts/m2. Unfortunately

plementary lighting.

2,500 hours produces around

compromised for the sake of

62.6 kg of CO 2 (some electricity

energy efficiency.

this crude method does not

• A figure below 2.0 W/m /100 lux 2

account for the efficiency of the

would be possible only with

luminaire or the length of time

localised and task lighting –

they are switched on. And pre-

this combination can easily

scribed targets vary enormously

achieve <1.5 W/m2/100 lux.

– e.g. those in the CIBSE/SLL Code for Lighting, for commer-

Luminaire Lumens per Circuit

cial spaces vary from 7 W/m 2

Watt (LL/W)

for fluorescent lighting offering

Part L2 of the Approved Build-

300 lux at the working plane up

ing Regulations (April 2002)

to 18 W/m for HID lighting sys-

pioneered this term – a novel

tems producing 500 lux – with

concept that does take into

many other levels in between.

consideration the photometric

Perhaps significantly, the BCO

efficiency of the luminaire.

Fit-out Guide for Cat A schemes

However, it does not necessarily

indicates a figure almost

measure the efficiency of the

mid-way between these two

luminaire in putting light on the

extremes, at 12 W/m2

task – or allow for the mainte-

2

nance factor. With the advent of lower cost controls and dimming, not to

For offices the prescribed limit

mention scene-setting and com-

is 40 LL/W. In practical terms

bination lighting schemes, a

this means using a combination

more sophisticated approach

of lamps in the building that

to predicting energy use is

have an aggregate efficacy

necessary:

above 75 lm/W. Part L offers a

2

is not fossil fuel generated).

Global Carbon Imbalance Predicting the Growth of CO2

Further Considerations in Workplace Lighting

This emergency sign may not be positioned most appropriately, but it does nevertheless provide effective orientation and re-assurance in the event of an emergency.

8. Emergency Lighting and Safety Liability

Clear, unambiguous signing of the major escape routes is mandatory in any working building.

this attitude could potentially

provided, then the insurance

threaten the very survival of a

company would be well within

business. Take the example of a

its rights not to settle the claim.

Employers are liable for the

local area network power failure,

safety of their employees. They

which is an increasingly com-

Newer types of emergency light-

are required to carry out regular

mon occurrence. If a defective,

ing systems have eased the

assessments to identify areas of

self-contained emergency lumi-

burden on the shoulders of dili-

risk – and most are required to

naire, producing inadequate

gent employers. Self-test, or

document areas of concern and

escape route illumination, was

preferably centrally addressable

ways of rectifying the problem.

responsible for an injury during

systems, can radically reduce

Part of this Risk Assessment

evacuation, litigation could

the through life testing costs

process covers the suitability

result.

of emergency luminaires, but

and sufficiency of the emergency

If the responsible party could

this still leaves the maintenance

lighting system; it must also

show that necessary Risk

headache of self-contained

specify procedures to ensure

Assessments had been con-

batteries. Alternative technology

continual testing, recording and

ducted and that a proper testing

solutions, based on decen-

maintenance of the system.

and maintenance regime was in

tralised local battery systems

place, then the business could

(Low Power Systems or LPS)

In the past, perhaps through

claim any legal costs on insur-

with automatic monitoring and

ignorance, emergency lighting

ance. However, if an adequate

testing, may well begin to re-

has often been treated as a “fit-

audit trail of assessment, testing

place self-contained batteries

and-forget” system but today

and maintenance could not be

as the number one choice.

www.zumtobelstaff.com/onlite

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

47

These two photos show an office building before and after a mains failure. This demonstrates how, in a genuine emergency, suitable and sufficient escape lighting and signage is critical.

• The service life for an indivi-

ONLITE Local: Self-contained

dual battery is three to four years – shorter with high ceil-

This emergency lighting solution

ONLITE Section Central: Distributed Central Battery System

ing temperatures

• Straightforward scalability with no need for technical equipment rooms • The service life of the group

from Zumtobel Staff involves little • Functional testing of battery

This emergency lighting solution

battery is extended, with an

installation effort and relies on

and emergency fitting using

relies on dividing the system into

option of five or ten years, due

Self Contained energy supply.

DALI system.

several self-contained circuits.

to it being installed outside potentially high temperature

Performance Characteristics:

Performance Characteristics/

• Recommended for 25 to 50

Requirements:

emergency and escape sign luminaires, with a maximum of 256 luminaires

areas. • Functional testing by DALI/

• Recommended for 50 to 500

Powerline.

luminaires • Stairway function plus night-

• Offers a fixed emergency light output

time and security patrol switching • Offers individual setting of emergency light output from 5–70 %

Safety Investment costs Maintenance costs Flexibility

Safety Investment costs Maintenance costs Flexibility

Lighting Techniques – Comparing the Options

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

“It is with light that we can

1. Uniform Lighting

bring soul and spirit back into

49

dimensional visual quality to

For these reasons, well-desig-

space. And by reducing overall

ned free-standing uplights, with

architecture and perhaps find

Uniform lighting is the easiest,

illuminance levels within the

a well-controlled downward task

our own soul in the process.”

most routine, lighting technique

facility, energy and maintenance

component, such as FLEXOS,

– Arthur Erickson

to be applied to the office en-

costs can also be reduced too.

LANOS or LIGHTFIELDS – or ver-

vironment. It is most often pro-

sions in which the fitting is fixed

duced by lazy contractors or

to the edge of the desk or inte-

3. Task Localised Lighting

grated into screens – can pro-

be easily created by a regular,

Switchable and/or dimmable

In addition free-standing uplights

repetitive array of ceiling-mount-

local task lighting on or at the

are now available as standard

ed luminaires, most often down-

desk is an increasingly popular

with SensControl incorporating

lights. Such an approach is no

option in many offices, as a way

a daylight sensor and presence

longer prescribed by the regula-

of boosting light levels at the

detector to ensure ease of oper-

tions (see p. 16–23) and neither

precise point where higher levels

ation, reduced energy consum-

is it advisable, creating as it

are needed – and giving staff

ption, and a “constant” level of

does, a very homogenous and

some degree of local control in

illuminance pre-selected by the

visually uninteresting lighting

the process. Such lighting can

user themselves.

scheme, without highlights or

be very useful for more elderly

any degree of shadow. It is also

staff who, research shows,

wasteful of energy, as not all

require much higher levels of

areas within an office need to

illuminance than younger staff

be lit to the same level.

for visual tasks such as reading.

engineers, using basic design software, without ever visiting

vide a much better solution.

the space in question. It can

Although task lights involve additional capital investment,

2. Task Area Lighting

they can reduce energy costs by permitting lower overall lighting

Recommended in EN 12464,

levels in the task area. However

the concept of task area lighting

task lighting is sometimes seen

is fundamentally in conflict

as a stop-gap solution – it

with the older uniform lighting

should never be supplied as an

approach – and offers many

alternative to a well-designed

advantages over it. TASK AREA

office lighting system.

lighting allows lighting levels to be higher at the task area (typi-

There are a number of down-

cally, 500 lux) where visual tasks

sides to desk-mounted task

are performed, while keeping

lights: if incorrectly angled, they

light levels lower in the surround-

can appear as glare sources to

ing spaces (300 lux). Compared

neighbouring staff; they take up

with a uniform array scheme,

considerable desk space; and in

such an approach offers the

many offices, they can create a

freedom to utilise additional

significant cable management

accent lighting and wall-wash-

problem, if added afterwards

ers, which can give added visual

and powered from wall-mounted

interest, by creating a multi-

sockets.

Lighting Techniques – Comparing the Options

More London Bridge

4. Direct Downlighting

Audit Commission Project: Friarsgate, Solihull; Occupier: Audit Commission; Architect: BGP McConaghy Architects; Lighting Designer: Andrew Wilkes Management; Contractor: Genus; Photo Credit: Martine Hamilton Knight

supplemented by other light sources, such as uplighters and

5. Dual Component Fixtures

louvre. The secondary component is indirect, via a white, matte

In all the research, direct down-

wall-washers, which completely

lighting solutions, using ceiling-

negates any energy efficiency

Pioneered by Zumtobel Staff’s

chamber. Some versions are

mounted or recessed luminaires,

and cost advantages which such

MELLOW LIGHT concept, dual

mounted flush with the ceiling

have been shown to have the

a system might have claimed in

component luminaires are fast

but others protrude below the

lowest user acceptance of all

less enlightened times.

becoming a standard office light-

soffit, or are surface-mounted,

reflector or secondary opalised

ing solution. They have a primary

to increase illumination of the

own direct downlighters create a

Zumtobel Staff research has

direct lighting component that

ceiling. These luminaires are par-

very dark, oppressive visual am-

established that downlighters

can be created by a perforated

ticularly recommended for situa-

bience, with brightly lit horizontal

with louvres, which were original-

basket or Gridmesh, to shield

tions where the ceiling is less

surfaces and underlit walls and

ly intended to prevent glare on

and diffuse the lamp – or alter-

than 2.6 metres and direct/indi-

ceiling – an ambience which has

VDT screens, can still create

natively there may be an open

rect lighting cannot be installed.

lighting systems. Used on their

been dubbed the “dark cave”

significant disability glare on key-

effect. In fact, downlighting as a

boards located below the fit-

sole lighting technique cannot

tings, which can obscure the

even meet the latest LG3 regula-

letters/numbers on the keys.

tions, which requires a scheme

This is a particular problem with

to achieve 50 % of task surface

black keyboards which are cur-

illuminance on the walls and

rently very fashionable (beige

30 % on the ceiling. Therefore to

and grey is much less suscepti-

comply, downlighters must be

ble to the problem).

W O R K P L A C E L I G H T I N G – P A S T, P R E S E N T A N D F U T U R E

An exemplary direct/indirect scheme – preferred by users.

MPO in action in the form of flush-mounted LIGHTFIELDS luminaires.

6. Direct/Indirect Lighting

7. Micropyramidal Optic (MPO) Luminaires

60 % also allows for flexible arrangements of individual work stations.

In earlier chapters we have

MPO is a new technology in-

summarised extensive research

However, against all convention-

volving an innovative lens sys-

showing that direct/indirect

al wisdom, which assumes that

tem to obscure the lamp image

lighting systems have massive

direct/indirect lighting tech-

and limit the luminance of the

user support, in terms of visual

niques are expensive or ineffi-

fitting to 1000 cd/m2 at relevant

preference. Such systems com-

cient, they can actually turn out

angles. Because these are en-

bine the advantages of direct

to be cheaper than downlighting

closed T16 luminaires, they are

work station lighting and indirect

solutions, which now require

very efficient – and the concept

room illumination. The resultant

additional luminaires to conform

can be applied to flush-recessed,

light distribution creates a pleas-

to current codes. One main rea-

surface-mounted or suspended

ant room atmosphere, noted for

son is that direct/indirect fittings

luminaires, as in the Zumtobel

its vertical illuminance levels,

can be located at much wider

Staff Lightfields range. The

good modelling and efficient

spacings than other types of

recessed version is very well

lighting of the task area. In

lighting, while achieving similar

suited to low ceiling heights,

open-plan offices, generously

illuminances.

where an open louvre fitting

proportioned, bright ceiling areas enhance the feeling of well-being and an indirect light component of greater than

would be visually oppressive.

51

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

53

Workplace Lighting – Application Areas

“To shift the paradigm of lighting specification and installation in common practice towards ergonomically designed lighting solutions.” Mission statement of the Light Right Consortium, USA (2001–2004)

Workplace Lighting – Application Area Case Studies

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

This section offers an easy-to-

work space in a modern com-

ing the best people. We’re in

understand, illustrated guide to

mercial building. Each photo

the war for talent. The building

the ideas and lighting solutions

has a short detailed commen-

inspires – that’s what makes it

discussed in the rest of the

tary – and where necessary, is

special.”

brochure, using photos of light-

cross-referenced to lighting

– Andy Rubin, PENTLAND

ing schemes, from exemplary to

issues and product information

(2003 BCO “Best of the Best”

poor, for the major types of

in other parts of the brochure.

“It’s about attracting and retain-

Award winner)

EMI HQ, 27 Wright’s Lane BCO Awards 2004 Refurbished/Recycled – National (and London) Winner Architect: MoreySmith

55

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

Open Plan Offices The Audit Commission require premium working conditions to recruit the right calibre of personnel. MELLOW LIGHT IV was chosen here as part of an expressive interior design scheme that is contemporary, without being over elaborate. Notice the light and airy appearance achieved without daylight. Colour tints, available as accessories, are used to delineate different departments and circulation areas. Photo courtesy – Andrew Wilkes Management

This installation at a major Canary Wharf bank is state-of-the-art in energy-saving terms, achieving less than 2 W/m2/100 lux – but that doesn’t guarantee good lighting. The luminaires are a variant of the MIREL fitting with a semi-specular louvre mounted in a “service tile” within a “tartan grid” ceiling, much favoured in the premium office market. The lit effect is typical of offices with deep floor plates, where most staff are distanced from daylight. The characteristic scollops on the walls and shadowing at desk dividers is evident. This photo also shows the dominating vista of the underlit ceiling. Developer – Argent Estates Ltd. Architect – Lifschutz Davidson Building Services Engineer – Roger Preston Associates

This office with above average floorto-ceiling heights, is well suited to lighting with the suspended direct/ indirect CLARIS luminaire. The luminaires run perpendicular to the main fenestration and to the central atrium. They are dimmed in response to daylight levels (effect over-ridden for this photo). www.zumtobelstaff.com/claris www.zumtobelstaff.com/ml www.zumtobelstaff.com/miral

57

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

Open Plan Offices Forbury Square, with lighting design by Roger Preston and Partners, has full height glazing and a central atrium. The potential for energy savings is met by the SYNTO luminaires installed in a regular array. Each luminaire is dimmable and has the ability to pre-set maximum light levels according to the function or decor of the space. From the pre-set value the fixture will dim down to balance with daylight levels – or dim down to zero if triggered by the inbuilt absence sensor. Lighting design – Roger Preston and Partners

The electric lighting at North Lanarkshire Council’s office is shown with the daylight excluded. The surface-mounted MELLOW LIGHT IV with “gridmesh” diffuser scores very highly in lamp obscuration. However, the ceilings, walls and other vertical surfaces are still well illuminated, despite a very dark carpet. User and Consultant – North Lanarkshire Council

Offices at Diageo’s world HQ in West London, with lighting design by Indigo Light Planning, has a staggered array of dual component luminaires, equipped with a louvre for the principal downlight element. The space has manual blinds both into the atrium and the exterior and the effect also works well at night. Note the very high reflectivity from the carpet and desks and the small but influential colour accents.

www.zumtobelstaff.com/ml

59

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

61

Open Plan Offices

Developers Peel Holdings built this premium office space in Trafford Park, Manchester. Commendably, the Cat A fit out took a Cat B approach and included MELLOW LIGHT luminaires and the blue carpet (but not the blinds). Note the faces of the occupants and the other vertical surfaces are well-illuminated due to the soft polar curve of the fitting. The hue of the carpet and the nightscape of the Trafford Centre through the window is reflected in the ceiling. Occupier – Peel Holdings - Speculative Offices Developer – Peel Holdings Architect – Chapman Taylor Architects Manchester Building Services Engineer (Electrical Consultant) – WSP Lighting Designer – Zumtobel Staff/WSP

Pentlands European HQ, designed by architects GHM Rock Townsend, was the BCO Best of Best Award winner in 2003 and not unnaturally there is a strongly co-ordinated design influence throughout the building. This is well demonstrated in the openplan offices which are illuminated by MELLOW LIGHT III, with its diffuser basket dropped below ceiling level, offering lamp shielding for comfort. There is considerable daylighting

allied with an unusually high reflectance floor covering, while the stimulating colour accents on the columns signals the company’s commitment to a strong team culture (MELLOW LIGHT III has since been superceded by the innovative MELLOW LIGHT IV range).

www.zumtobelstaff.com/ml www.zumtobelstaff.com/lightfields

This refurbished office space at Arup Associates has restricted ceiling height. However the very shallow LIGHTFIELDS system can still be used successfully. At first sight there appears to be too much uncontrolled daylight (despite the blinds) – but note how effectively LIGHTFIELDS illuminates the internal mullion walls, thereby reducing contrast. The 1000 cd/m2 luminance limit of LIGHTFIELDS suits the older type screens in use. Occupier – Arup Associates Architect & Engineer – Arup Associates Building Services Engineer (Electrical Consultant) – Arup Associates Lighting Designer – Arup Associates

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

Open Plan Offices An interesting re-modelling of this space by OMI Architects employs suspended, direct/indirect CLARIS luminaires, despite a fairly low ceiling. The walls appear quite dark due to their distance from the luminaires, but this is strongly mitigated by the system’s high uplight component. This area would have been a visual disaster area if illuminated only by louvred downlights. Occupier – OMI Architects Architect – OMI Architects

This very successful combination lighting scheme by Atco Consultants, uses both suspended and wallmounted versions of the OREA direct/indirect luminaire. The fittings are equipped with SLC (side light coupler) Waveguide optics to reduce the luminance levels of the fittings above 65°. The end result makes for a very successful, visually comfortable workspace, despite the lack of daylight.

An interesting ceiling design and associated lighting solution at Lincoln University. The continuous runs of CLARIS direct/ indirect luminaires are suspended horizontally from a sloping ceiling which breaks out into a skylight. The overall effect is very pleasing despite the close offset “hot spot” on the ceiling at its lowest point. www.zumtobelstaff.com/claris www.zumtobelstaff.com/waveguide

63

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

65

Open Plan Offices This minimally styled CAD-intensive designers’ studio, at Arup Associates, has been appropriately fitted out with long, continuous runs of the OREA direct/indirect luminaires. The fittings express excellent design synergy with the interior architecture, echoing the square columns and dropped, linear ceiling section. The light distribution on the ceiling has good diffusion, with a gradual change of luminance, to avoid disrupting the visual calm of the space.

Buro Happold’s own offices exhibit considerable design ingenuity and make use of the ultimate office luminaire on the market – AERO with an Eldacon Waveguide® panel, which works to distribute the lamp image, in order to minimise glare. As a result the interior is bright, airy and visually stimulating, despite the dark floor. User and Consultant – Buro Happold

It is rare to find any single project in which a wide range of lighting design approaches can be used. Here is the office mezzanine floor, with a central atrium, at Buro Happold’s offices, which is treated in a very interesting manner. While extensive daylighting is central to the scheme, here it is supplemented, unusually, by COPA high-bay fittings suspended above the double-height zone. User and Consultant – Buro Happold

This high-ceilinged space with plenty of daylight, at Imperial College, London, is equipped with suspended SPHEROS direct/indirect luminaires. Even at night these accentuate the spaciousness of this office, despite low floor reflectance and extremely dark overdesk storage dividers.

However, over extensive periods of work, these dark dividers could cause eye strain, due to the constant adaptation the eye will have to make between task and background. Royal School of Mines, Imperial College www.zumtobelstaff.com/spheros www.zumtobelstaff.com/copa Architect: Sheppard Robson www.zumtobelstaff.com/waveguide Consultant: Norman Disney Young

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

67

Open Plan Offices

Faces, walls, ceilings, columns are all well lit – the key to successful office lighting. Interestingly there is a beige keyboard which is hugely better than black, for veiling reflections, yet the telecom cradle is not only black and has an LCD display, but it is near optimal in angle for offending veiling reflections from the overhead lighting. Fortunately MELLOW LIGHT IV Gridmesh greatly mitigates this likely problem.

This company (SSL International) clearly has comfort in the workplace high on the agenda as demonstrated by the chair and MELLOW LIGHT IV installed as base-build in this Premium Development. Unusually, using laptops with their own LCD screens, which have lower luminance levels than most stand alone screens, would mean preference for lower illuminance to compensate. The LCD telecom cradle at near vertical inclination would have had much complaint from overhead open louvres, as would the black keyboards. MELLOW LIGHT IV Gridmesh solves these problems. www.zumtobelstaff.com/ml

Not a Premium Grade specification for an office but it certainly looks it. The MELLOW LIGHT IV Q luminaire works so well in its empathy with daylight, putting light on the walls, columns, and ceiling: Brightness Management at its best.

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

69

Cellular Offices This meeting room is lit with suspended AERO luminaires offering good illumination of the main interior surfaces. However, one interesting feature is the glazed partitioning, where the middle section provides both a degree of privacy and also a surface to provide important vertical luminance.

The legal profession has a high demand for private offices, of which this scheme at Slaughter & May, is typical. It is located on an atrium perimeter wall with glazed partition to the corridor. Despite the flush-mounted MELLOW LIGHT luminaires, there is plenty of light on the crucial wall, facing the user’s desk position. Due to the diffuse nature of the illumination, there are no harsh shadows on the desk from the overhead storage shelves. Developer – Helical Bar Architect – Sheppard Robson www.zumtobelstaff.com/ml www.zumtobelstaff.com/waveguide www.zumtobelstaff.com/miral

Here the staggered lighting array works in favour of illuminating the right wall. The unseen left wall is only lit by one luminaire. The shadows in this view show the strong directionality of the downlighting. The photo also demonstrates that ceiling illuminance in small rooms is important – the walls facing the user are, however, crucial.

Note the semi-translucent blind quite commonly used to mitigate sky glare whilst maintaining a view to the exterior. Used at night the blind kills the harshness of the oppressive dark glazing but it contributes little to the brightness within the room. However had the blind been white, it would not have afforded a view. The best kind of blind to use might have been light-coloured and perforated.

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

Cellular Offices This glazed office again provides some view to the outside – and the free-standing LIGHTFIELDS combines good ceiling lighting with a degree of lighting to the task. Fitted with an occupancy detector, it switches off automatically when the space is empty.

The apparent width of this narrow cellular office is increased by using MELLOW LIGHT luminaires surfacemounted crossways. The good lighting of ceiling and wall surfaces increases the apparent room size and blends well with daylight. Note the external blinds which are popular in continental Europe.

Driven by BREEAM, the BCO and others, the quest to provide a view to the exterior has led to an enormous amount of glazing in contemporary cellular offices, in order to make them transparent. However, as can be seen at Pentland’s HQ, there are still some solid vertical surfaces which should be well lit. The MELLOW LIGHT fittings achieve this task well. www.zumtobelstaff.com/ml www.zumtobelstaff.com/lightfields

71

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

73

Dealer Rooms This view of Lehman Brothers’ dealing rooms show the extraordinary density of screens – both deskmounted monitors and large suspended data screens. The quality of lighting in such a space is critical. Architects – Cesar Pelli & Assoc., Swanke Hayden Connell Consultant – Hilson Moran Partnership

Lehman Brothers’ dealer rooms at Canary Wharf, London use the ultimate optic for a dealer room – the AERO luminaire with Eldacon® Waveguide panel, mounted in continuous rows up to 70 metres long. The ceiling brightness is kept sufficiently high throughout this deep-plan area and the column heads are also well lit. The AERO luminaires are controlled by the main LUXMATE building lighting control system, which allows the whole floor to be pre-set to a chosen light level. They can be daylight-linked, if necessary. www.zumtobelstaff.com/ml www.zumtobelstaff.com/waveguide

There is little daylight penetration into this space at the Bank of Nova Scotia, yet the MELLOW LIGHT luminaires do a good job of lighting the internal surfaces. However, note the potentially distracting luminaire image reflected in the specular metal ceiling – a good example of how the lighting and interior design might have been better integrated.

Again, this space at the Bank of Nova Scotia shows effective lighting of all the main interior surfaces, including the light-coloured blind. In this night time shot, the blind becomes another bright vertical surface, rather than a black hole created by an unshielded window. Note the brightness-robbing effect of the extensive black IT hardware.

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

75

Dealer Rooms

This mid-‘90s dealer room at Barings ING shows the now obsolete ID-VM luminaire, which was by far the most advanced office lighting system of its type. The conventional way to light these spaces at the time was with “dark light” downlighters, due to the industry’s obsession with preventing reflections in display screens. This highly successful installation proved that excellent lighting for VDTs need not result in “cave-like” environments.

This office at Reuters is not a dealer room but its intensive high-tech nature presents many of the same issues. The lighting is provided by MELLOW LIGHT III luminaires with a dropped diffuser basket and despite the blinds being closed, this intrinsically dark space, with even darker IT hardware, looks bright, spacious and comfortable. Note particularly the well-lit far walls and ceiling. Lighting design: PME

www.zumtobelstaff.com/ml

This novel approach to lighting a dealing space at UBS Warburg works admirably, with all the surfaces well lit, including the upper walls. This was achieved using the QUARTOS square downlighter luminaire with a suspended circular deflector to divert a proportion of light output back up into the coffer. The energy penalty was negligible when compared to the user benefits.

Architect & Building Services: BDP, Manchester Lighting Design: BDP & Zumtobel Lighting

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

Control Rooms The layout of suspended luminaires in this building services control room at Heathrow Airport reflects its name – the Star Centre. The ceiling layout means that the spacing between luminaires varies enormously, yet there is no hint of this in the lit effect due to the softedged light distribution.

This highly unusual space, with sloping windows and exposed services, has been equipped with suspended direct/Indirect CLARIS luminaires. These illuminate all the surfaces, which is essential in a space that could so easily have become cold and grey.

The NATS Air Traffic Control Centre near Southampton is perhaps the most critical visual environment imaginable – lives could be at risk if the screens are not fully visible. The custom-designed direct/indirect lighting system demonstrates the type of lighting chosen by a team of designers to create an ideal visual environment without any compromises. www.zumtobelstaff.com/claris

77

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

79

Control Rooms This space has a low ceiling height and is lit entirely with circular downlights, with predictable results. However, an otherwise dark ceiling takes on some brightness, due to the reflected image of the large data screen on the metal ceiling, and the light coloured desking.

The lighting at this installation is designed to create good illumination to the work surface, using suspended RTX louvres, while avoiding spill light onto the wall-mounted display screens. The hidden cove lighting, which surrounds the display screen panel, creates good background illuminance while leaving the screen surrounds relatively dark. www.zumtobelstaff.com/rtx2 www.zumtobelstaff.com/panos www.zumtobelstaff.com/emotion

This shipping control centre at Harwich equipped with Category downlights-exhibits high horizontal illuminance and strong shadowing. In this instance a 24-hour view out of the windows was essential, which precluded direct/indirect luminaires and all-round interior brightness (the LUXMATE dimming-system allowed dimming down to 3 % in order to mitigate against disabling reflections off the glass at night).

The artificial lighting in this space is not clearly evident – however without careful design and effective window blinds, there could be occasions when the multi-panelled displays positioned against the windows will be impossible to read.

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

81

Call Centres

This call centre at Careers, Scotland, benefits enormously from intense coloured highlights and the use of suspended OREA luminaires, which offer good illuminance on all the main room surfaces. Consultants – DMP Consulting

Wessex Water (left and above), designed by Bennetts Associates, won the highest BREEAM accolade of “Excellent”. Seen at dusk, the interior lighting comprises a series of special CLARIS direct/indirect luminaires, designed to fit into the structural linear coffer. As there is no ceiling to baffle the sound, the luminaire has perforated wings which are filled with acoustic dampening material. Also included are presence detectors and call indicators. www.zumtobelstaff.com/claris www.zumtobelstaff.com/waveguide

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

83

Call Centres This installation at London Bridge has interesting scalloping in the recess, additional wall washing and very light coloured surfaces. In combination these features save what could easily have become an oppressive space, particularly with the lack of any daylight.

This large call centre for MISCO presented a range of challenges for the lighting designer but the end result is quite superb. MIROS (free-standing uplights and) spotlights mounted at an accessible height, direct light at the suspended mirrors. The resultant re-directed light enters the central area when daylight is insufficient. The perimeter workstations are well lit by indirect/direct LA TRAVE luminaires to emulate the daylit areas. Consultants – Rolton Services

This space at the Orange call centre would have been unbearably gloomy if fitted out with louvred downlights. The black and orange house colours used in the interior design come out quite well from the column-mounted uplights and the recessed MELLOW LIGHT IV gridmesh luminaires. The latter include an orange filter within the left/right secondary light chamber to emphasise the circulation areas. www.zumtobelstaff.com/ml www.zumtobelstaff.com/miral www.zumtobelstaff.com/panos www.zumtobelstaff.com/spheros

This Category louvre installation desperately needs some auxiliary lighting, to mitigate the bright desk surfaces lit to over 600 lux – note the dark vertical surfaces in the foreground. The narrow window mullions are unevenly illuminated and the planting could also have benefited from dedicated accent lighting.

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

Communication Areas/Meeting Rooms In this space at the RIBA building in London designed by Visual Energy, suspended direct/indirect AERO luminaires, combined with surface mounted LIGHTFIELDS in the lower ceiling areas, create a light, airy and cheerful character to facilitate open discussion and exchange of ideas.

TIF-Daten von Martin bearbeiten lassen This diverse, multi-functional meeting space at Rolls Royce has dramatic visual appeal, with its combination of ambient and accent light sources. However, the lighting was designed for circular meeting tables, which was subsequently changed, which highlights the need for good co-ordination between the lighting designer and interior designer.

Feindaten sind o.k. Here a combination of softer direct/ indirect lighting and directional downlighting creates a space with good task lighting features, while retaining an element of drama. This is a good example of how the lighting in a multi-use space for face-to-face meetings, projections, presentations and so on, can be modified to suit all needs.

This adventurous Danish meeting room cantilevered over the atrium benefits from huge amounts of daylight – but is not recommended for those suffering from vertigo. www.zumtobelstaff.com/waveguide www.zumtobelstaff.com/lighttools www.zumtobelstaff.com/lightfields

Feindaten sind o.k.

85

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

87

Communication Areas/Meeting Rooms This meeting room is treated with a simple, suspended AERO solution, which balances well with the daylight flooding in from the left.

This meeting and training space with central room divider, requires maximum flexibility. The suspended CLARIS fittings offer nicely balanced illumination of the main room surfaces – and are arranged to work equally well when the room is split into two.

A multi-media room that would be excellent for video-conferencing, offering, as it does, good facial modelling of the people around the table, through the use of OREA suspended luminaires. Note too the blinds for daylight exclusion and privacy. This feels like the sort of space where important decisions are made. Clusters of LIGHTFIELDS luminaires, ceiling recessed downlights, sill-recessed uplights and integrated blinds (both to the internal and external spaces), all contribute to the creative corporate ambience. www.zumtobelstaff.com/lightfields www.zumtobelstaff.com/waveguide www.zumtobelstaff.com/claris

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

Break Out Zones Three views of different break-out zones in the same offices belonging to McCann Ericksson. An almost identical lighting concept has been used in each space, but the designer’s careful selection of furnishings has created spaces ranging from relaxed to funky. Occupier – McCann Ericksson Architect – Bowker Sadler Partnership Building Services Engineer – Hoare Lea Associates Lighting Designer – Bowker Sadler Partnership

A classy break-out zone at Slaughter & May. One of many situated right at the heart of the building, they signal their presence by the use of strong primary colours and clean, bright lighting. www.zumtobelstaff.com/panos www.zumtobelstaff.com/waveguide

89

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

91

Break Out Zones Perhaps more of a transient service facility than a break-out zone, this space uses identical lighting to the offices.

This break-out zone at the Audit Commission is situated in the middle of the work zone but is visually demarcated from it by the careful use of screening, furnishings, colour and lighting. www.zumtobelstaff.com/ml www.zumtobelstaff.com/miral www.zumtobelstaff.com/miros

This “break-out” zone at Orange is situated on the periphery of an open-plan space, next to a photocopier, and has identical lighting to the rest of the space. It is debatable whether brightly coloured chairs and a colourful, curved partition would be sufficient to allow workers to distance themselves, even for a few minutes, from routine tasks. Differentiated lighting could have made all the difference.

This media suite at Diageo has been given an unconventional high-tech lighting scheme used to reflect and underline its futuristic function and image.

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

93

Storage These functional file storage systems have been equipped with a simple and logical lighting solution – a line of cantilevered fluorescent wall-washers which wash light down the vertical stacks offering maximum visibility.

This basement library area, deprived of light, has been equipped with LIGHTFIELDS for maximum brightness and good vertical illuminance.

Effective lighting of office storage involves lighting the verticals and the best solutions provide high levels of uniform lighting from top to bottom. This example from retail, where lighting quality has a direct bearing on commercial success, shows highly uniform (VPI 1) wall-washing onto merchandise and perhaps shows how designers of office spaces could learn from their retail counterparts. www.zumtobelstaff.com/miral www.zumtobelstaff.com/lightfields

Sadly, this kind of installation is all too frequent. Some of these storage cabinets must be almost unusable due to the poorly positioned and wholly inappropriate lighting.

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

95

Common Parts Stairs/Lift Lobbies/Atria/Entrance Entrance lobbies can play several roles – in addition to projecting the corporate image, they may also have more functional uses, such as security, so in addition to decorative lighting, effective task lighting may also be important.

This plain, simple stairwell could so easily have attracted a run-ofthe-mill utility lighting scheme. Instead, the lighting design, even in this back-of-office area, helps to differentiate this workplace from others.

Large reception and entrance spaces such as this succeed with the clever use of different materials, and a wide variety of luminaire types and lighting techniques. The primary, secondary, and tertiary areas of importance are all instantly obvious in this space. As is the projection of the corporate image. Client – British Land Architect and Building Services – Arup Associates

The atrium is a favoured way of bringing light into the centre of a building, but it can also make a strong corporate statement by displaying the company’s offices and meeting rooms to the visitor in a dramatic way. Good office and meeting room lighting can make a major contribution to creating a favourable impression. www.zumtobelstaff.com/ml www.zumtobelstaff.com/slotlight www.zumtobelstaff.com/panos

Sophos, Abingdon Architect: Bennetts Associates

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S

97

Common Parts Stairs/Lift/Lobbies/Atria/Entrance These two variations on the central atrium/circulation space both require well-designed artificial lighting. The minimal space on the left has a series of shadowed overhangs, particularly on the ground floor, which demand good auxiliary lighting to balance with the daylight; the example below, at Pentland’s HQ, incorporates large projectors within the central space, to stand in for daylight after dark – plus good soffit-mounted illumination of the perimeter walkways at each level. Each floor represents a different Pentland brand and a lot of effort has gone into the interior and lighting design to differentiate them.

www.zumtobelstaff.com/spheros www.zumtobelstaff.com/miros www.zumtobelstaff.com/copa www.zumtobelstaff.com/panos www.zumtobelstaff.com/ml

“Glare is not an unavoidable curse in lighting: it is merely a side effect of incompetence.” Jules Horton Lighting the Inner Spaces

WORKPLACE LIGHTING – LIGHTING DESIGN

Workplace lighting – Products and Resources This final section of the brochure offers a concise survey of the main products in the Zumtobel Staff portfolio that could be used (either singly or in combination) for achieving the optimum lighting results discussed in Sections 1, 2 and 3. In addition we offer information on our various support services, including technical backup and lighting calculation and visualisation packages, as well as supplying a number of useful addresses and references that the reader may want to follow up.

99

Direct-Indirect Lighting Systems AERO/OREA “Best Practice in Dealer Room and Office Lighting”

AERO Eldacon® double waveguide Options

Softline

Geometric * ELDACON® is a registered trademark of Siteco Beleuchtungstechnik GmbH.

• Single or double Waveguide • SLC alternative Waveguide • Cord or pendant suspension • Titanium colour • Continuous-row option • Transparent cable feed • Dimmable DALI

Distributed lamp image via microprisms. Typical Cat. no: 40 968 437 USN-ID 2/54 W*

AERO Designed by leading Italian de-

computer work-stations, lap-

tions on screens and displays,

tops and notebooks, irrespec-

which permits unrestricted

tive of the angle of the screen.

arrangements of lighting units within the space. AERO lumi-

signers, Sottsass Associati, the suspended AERO direct/indirect

Waveguide involves no conven-

naires come in two designs –

lighting system embodies a new

tional reflectors or louvres but

the Softline version, with round-

interpretation of lightness and

its innovative micro-prism ma-

ed details, and the hard-edged

elegance in its impressively

terial totally obscures the bright

Geometric version – each of

shallow form, while combining

lamp image while transmitting

which is available with single or

the latest light control techno-

the light with an efficiency of

double Waveguide panels and a

logy, the Eldacon® Waveguide

70 %. AERO puts 76 % up-

range of lamp wattages.

system.

wards onto the ceiling in a broad distribution pattern, to

The patented micro-prism

ensure uniform illumination of

structure gathers the light from

the ceiling, with a low-glare

its T16 lamps and spreads

direct component of 24 %.

and directs it downwards in a low-glare, batwing pattern

The main advantage of the

(<1000 cd/m 2 at 65°) creating

AERO system is that the lumi-

comfortable, high efficiency

naires can be viewed from any

lighting which is perfect for

angle, with no distracting reflec-

* For further details: www.zumtobelstaff.com/waveguide

Design: Sottsass Associati

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

101

“The flying wings bring visual lightness to the space”

OREA SLC® waveguide Options • Cord or pendant suspension • Continuous-row option • Circular version • Wall mounted version • Dimmable DALI

* SLC® is a registered trademark of Zumtobel Staff GmbH.

Typical Cat. no: 40 962 222 GZ-ID 2/54 W*

OREA

work-stations, laptops and notebooks, irrespective of the

OREA offers a further variation

angle of the screen.

on the suspended direct/indirect lighting system, using the SLC®

OREA puts the largest compo-

Waveguide system in an elegant

nent of its output onto the

ensemble. The luminaire uses

ceiling in a broad distribution

twin T16 lamps housed in the

pattern, to ensure uniform illumi-

central body – the light from

nation of the ceiling, with a low-

these is diffused out along two

glare direct component of 24 %.

tapered outer wings made from

The main advantage of OREA

SLC Waveguide, a patented

is that the luminaires can be

linear, micro-prismatic material.

viewed from any angle, with no

®

distracting reflections on screens The innovative SLC Waveguide

and displays, which means it

material totally obscures the

permits unrestricted arrange-

bright lamp image while trans-

ments of lighting units within

mitting the light with an efficien-

the space.

cy of 70 % creating comfortable, high efficiency lighting which is perfect for computer

Design: Bea Frois

Direct-Indirect Task Area Luminaires FREELINE MP-ID Micro-pyramidal optic/C-I/ID Matt Bivergent® Louvre “A new genre of direct/indirect”

FREELINE MP-ID Optic Options • Task MPO Optics at ends also have uplight • Dimmable DALI • Dimming on Demand

Typical Cat. no: 42 159 244 FREELINE MP-ID 2 x 1/49 W ASQ500*

FREELINE MP-ID

away from uniform arrays to the ideals of localised Task Area

FREELINE is a new genre of

lighting where energy loadings

linear suspended direct/indirect

can be halved as will be the

luminaire that is a restrained

demands of the European

design to be perceived as part

Energy Performance of Build-

of the architecture with empathy

ings Directive.

to elements of an interior such as partitions and furniture.

Design: Ingenhoven & Partners

FREELINE MPO is a tandem length elegant luminaire with minimalist features and continious downlight via an MPO micro-pyramidal optic having < 1000 cd/m2 brightness and generous uplight. FREELINE is suited to average ceiling heights and is suited to lighting concepts that can move

* For further details: www.zumtobelstaff.com/freeline

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

103

“Louvres without the headache”

FREELINE C-I/D Louvre Options • Task Louvres at ends also have uplight • Dimmable DALI • Dimming on Demand

Typical Cat. no: 42 159 236 FREELINE C-I/D 1/80 W + 2 x 2/24 W*

FREELINE C-I/D

1/54 W, 1/80 W, 2/54 W Uplight

FREELINE Matt Bivergent Louvre option is a sister product to the FREELINE MPO, that is opti-

Louvre

Louvre

C-I/D Louvre

mised to Task Area Lighting. The central compartment houses an uplight only section

2/24 W downlight

whereas the ends contain the

2/24 W downlight

task area

direct downlight louvre section. When mounted over a task area, the direct lighting thus

1/54 W, 1/80 W, 2/54 W Uplight

comes from the side to the task,

Uplight also from Task Louvres

avoiding veiling reflections. The Comfort Bivergent louvres

Louvre

Louvre

render extremely low brightness < 200 cd/m2.

C-I/ID Louvre 2/24 W downlight

2/24 W downlight

task area Sideways light reduces veiling reflections

Direct-Indirect Lighting Systems LIGHT FIELDS/SPHEROS “The prismatic is dead, long live MPO technology”

LIGHT FIELDS A-ID, indirect/direct Options • 300 or 600 widths • Configurable into clusters • Surface, recessed, suspended and freestanding option

Diffuser layer Light directing layer with micro-pyramidal structure Supporting layer

Typical Cat. no: 42 157 193 LIGHT FIELDS A-ID 2/54 W*

Both the form and function of

LIGHT FIELDS not only ensures

the light, and not the lamp –

LIGHT FIELDS is generated by

unusually brilliant lighting quality,

even with surface-mounted and

LIGHT FIELDS is a totally unique

the innovative micro-pyramidal

it also reduces direct and reflect-

recessed versions offering pure-

lighting system that can be

optic (MPO), a further refinement

ed glare to a minimum in con-

ly direct light distribution. Des-

used in a number of ways: as a

of Zumtobel Staff’s Waveguide

formity with the latest EN 12464

pite their high light output ratio

direct, surface-mounted light

technology which has revolu-

recommendations. Annoying

of 72 % (surface-mounted and

source; in a suspended direct/

tionised office lighting. MPO

reflections on computer screens

recessed versions) and 86 %

indirect configuration; as a free-

technology takes the system

and displays have become a

(pendant version), the luminance

standing unit; or in clusters

one step further by reducing the

thing of the past – even on

at radiation angles above 65°

which mimic the appearance of

luminance levels of not only pen-

notebook screens, regardless

remains less than 1000 cd/m2.

a large skylight.

dant luminaires, but also surface-

of their angle of inclination.

LIGHT FIELDS

mounted and recessed lumi-

Design: Sottsass Associati

In whatever configuration, the

naires, to guarantee glare-free

MPO technology ensures that

LIGHT FIELDS luminaire has a

lighting for VDU work-stations.

from all angles one sees only

restrained, unobtrusive appearance, with its simple, slim contours, strict geometrical form and highly refined materials. LIGHT FIELDS does not dominate the architecture of the space, but fits in discreetly.

* For further details: www.zumtobelstaff.com/lightfields

105

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

“Slim and minimalist with universal appeal”

SPHEROS C-ID 2/28 W T16 suspended, semi matt louvre Options • 1200/1500/2400/3000 lengths • Different louvre options • Surface mounting, continuous-row and pendant rod versions • Colour strips available • Dimmable DALI

The new generation of louvres, developed in the Research and Development laboratories of Zumtobel Staff, optimises the interaction between two unique technical developments. It combines the patented BIVERGENZ ®technology and the innovative Unique®slats.

max. 1000

BIVERGENZ®plus Louvre technology

220

Typical Cat. no: 42 154 954 SPHEROS C-ID 2/28 W T16 LDE TI ASQ1000*

SPHEROS T16 C-ID

of the reasons why SPHEROS T16 has consistently remained popular amongst specifiers.

The classic SPHEROS shape has now become a much imita-

Design: Hartmut S. Engel

ted lighting design icon, with surface mounted, suspended, individual or continuous versions of SPHEROS all available. There is even complementary wall mounting and free standing versions available to complete the family. This enables a constant design theme across the workplace. The wide range of optics all available with or without an indirect component can cater for any aesthetic and technical requirements and is perhaps one

* For further details: www.zumtobelstaff.com/spheros

Direct-Indirect Task Area Luminaires TECTON Mellow Light and TECTON Louvre “Ultimate Sustainability from Reconfigurability”

TECTON Mellow Light Options • Extensive TECTON System Range • See TECTON Brochure for more details

Typical Cat. no: 22 160 106 TECTON-D ML 28/54 W* Specify also appropriate batten and accessories.

TECTON Mellow Light

Range. The design execution in detail is exquisite and the lit

The TECTON Range straddles

effect is even better.

a wide application range from industrial through commercial

Design: Nicholas Grimshaw &

to retail and architectural.

Partners

TECTON features a continuous bus bar trunking to which various attachments can be clip-fitted. Key to the TECTON range is choice of luminaire type, ease of installation, and ease of re-configuring which renders ultimate flexibility for office churn. TECTON Mellow Light brings all the attributes of MELLOW LIGHT IV to the TECTON

* For further details: www.zumtobelstaff.com/tecton

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

107

“Louvres with Flexibility”

TECTON Louvre Options • Extensive TECTON System Range • See TECTON Brochure for more details

Typical Cat. no: 22 157 522 TECTON-D ID 28/54 W* Specify also appropriate batten and accessories.

TECTON Louvre

attractive contemporary designs for the more domestic atmos-

TECTON Louvre is a functional

phere needed in Break Out

Workplace lighting luminaire with

Zones, Restaurants etc. within

direct-indirect distribution. The

the Workplace.

louvre is a darklight with narrow lamellae made from injection moulded polycarbonate. The luminaire is thus suited to localised lighting to task areas, but combined with the TECTON trunking, the whole system renders extraordinary flexibility to churn in Workplace space planning. Moreover there are other luminaires in the TECTON Range besides the Mellowlight, including TECTON Dekoroptik and TECTON Pool-light, which are

Direct-Indirect Lighting Systems CLARIS II/VOLARIS “Clear, unobtrusive, geometric, symmetric”

CLARIS II MC-ID cord supension, titanium Options • Cord or pendant suspension • Comfort or darklight louvre • Dealer Room refractor for louvres • Opal Diffuser • Single and Twin lamp • Double length luminaires • Matching surface luminaires • Dimmable DALI

The 3D model of the cell louvre shows the grooveshaped design which provides for optimum light distribution.

Typical Cat. no: 42 158 653 CLARIS II MC-ID 1/54 W*

CLARIS II/VOLARIS

Both luminaire ranges use the

CLARIS II and VOLARIS come in

designed for the UK market,

latest cell louvre technology

four main variants:

which has a particular lamp

The CLARIS II and VOLARIS

which set new standards for

surface-mounted, wall-mounted

this type of luminaire. For the

• Darklight Specular Louvre

refractor to be added between

or pendant luminaires represent

first time in linear fluorescent

version, for particularly onerous

the lamp and louvre. This miti-

the latest step in a long line of

systems, the louvre has been

VDT applications;

gates the lamp brightness,

successful louvre-based lumi-

manufactured from injection-

naires for a wide range of work-

moulded materials, offering the

• Matt Comfort Louvre version,

problems on dealer screens or

place lighting applications.

homogeneous 360° Bivergenz

with its innovative micro-tex-

other LCD desk-based equip-

CLARIS II has an independent,

optic design. This means that in

tured embossed finish, which

ment.

clear and unobtrusive appear-

terms of light distribution and

gives a high diffusivity to the

ance, with its geometric, sym-

lighting effect, CLARIS II and

louvre surface, offering a very

• Opal Diffuser model, de-

metric lines. VOLARIS offers the

VOLARIS out-class luminaires

soft image of the lamp, even at

veloped for situations where the

same lighting features as its

with larger louvres. They both

high viewing angles. Despite the

designer wants the lighting to

“sister” model, but its curva-

offer efficient, all-round glare

matt finish, the product meets

be minimalist yet conspicuous.

ceous, flowing shapes and soft,

control, making undesired

the 1000 cd/m2 limit at 65º and

The Opal Diffuser completely

gently rounded appearance

reflections on screens and dis-

is the preferred choice for gen-

diffuses the view of the lamp,

offers an alternative architectural

plays a thing of the past and

eral VDT office lighting.

yet the lit appearance remains

aesthetic.

allowing maximum flexibility in luminaire configuration.

position that allows a prismatic

which may otherwise cause ®

crisp and even. • Matt Comfort Louvre with Dealer Room refractor, specially

* For further details: www.zumtobelstaff.com/claris2

Design: A • G Licht Bonn

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

109

“A softening of lines”

VOLARIS MC-ID cord supension, anodised Options • Cord or pendant suspension • Comfort or darklight louvre • Dealer Room refractor for louvres • Opal Diffuser • Single and Twin lamp • Double length luminaires • Matching surface luminaires • Dimmable DALI

Typical Cat. no: 42 156 237 VOLARIS MC-ID 1/54 W*

CLARIS II

VOLARIS

* For further details: www.zumtobelstaff.com/volaris

Dual Component Lighting Systems MELLOW LIGHT IV Grid-mesh “A Piece of sky”

MELLOW LIGHT IV recessed, grid-mesh controller Options • 600/1200/1500 widths • Diffuser optic with slotted metal sheet for all-round glare control • Dimmable Dali

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 TRANSLUCENT OPAL DIFFUSER WINGS utilising variable refractive index plastic for high efficiency 3 TONAL COLOUR STRIPS provide differential colour tone between primary optic and secondary chamber

1 2

4 PRIMARY COMPARTMENT enclosed for optimal T16 lamp operation, and to improve maintenance factor 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: 42 106 224 ML4 B EB 2/24 W T16 M600*

MELLOW LIGHT IV Grid-mesh

With it’s rounded polar curve

grid-mesh diffuses the lamp, yet

showing slow rate of change

integrates with the secondary

of intensity, MELLOW LIGHT IV

chambers to bring about an

The MELLOW LIGHT system,

epitomises good office lighting.

attractive luminaire whether it is

now in it’s fourth refinement,

The often conflicting needs of

switched on or off.

has set the benchmark for sur-

architectural quality, visual com-

face mounted and recessed

fort, daylight integration and

office lighting for more than a

control of screen reflections can

decade. The key aspect of its

all be reconciled through the

design is that thanks to the

unique qualities of MELLOW

unique all-round glare control of

LIGHT IV. For example, the main

the grid-mesh diffuser, you see

visual surfaces, such as faces,

the light but not the lamp, at all

walls and furniture are better lit

angles of view. The usual glare

by MELLOW LIGHT than by

and distraction associated with

conventional louvre fittings so

overhead lighting are eliminated,

that the overall impression of

while the subtly varied appear-

interior brightness is enhanced,

ance of the luminaire from

without added energy consump-

different directions adds visual

tion. The grid-mesh diffuser sets

interest.

a new trend for style that leaves behind perforated diffusers. The

* For further details: www.zumtobelstaff.com/ml

Design: Studio & Partners

3 4 5

111

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

“Tames even the brightest lightsources”

MELLOW LIGHT IV recessed, grid-mesh controller Options • 600/1200/1500 widths • Diffuser optic with slotted metal sheet for all-round glare control • Dimmable Dali

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 TRANSLUCENT OPAL DIFFUSER WINGS utilising variable refractive index plastic for high efficiency 3 TONAL COLOUR STRIPS provide differential colour tone between primary optic and secondary chamber

MELLOW LIGHT IV Grid-mesh

and its even, omni-directional light output allows arrays to be under or over spaced, without

The novel feature of the latest

adverse effects on uniformity.

MELLOW LIGHT model, desig-

Due to the higher lamp output

ned by Studio & Partners, is the

of versions using the TC-L lamp,

primary light chamber so that

they consequently have higher

the fitting is enclosed, to stabi-

brightness’s (see published Lmax values).

lise the lamp operating temperature, coupled with the secondary light chamber concept, which gives visual depth to the luminaire. A degree of direct lighting is available from the primary chamber, using a variety of devices, including grid-mesh and SYNTO louvre. One of the most useful characteristics of MELLOW LIGHT IV is its flexibility – luminaires can be arranged wherever you like in the room –

1 2

3 4 5

4 PRIMARY COMPARTMENT enclosed for optimal TC-L lamp operation, and to improve maintenance factor 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: ML4 B EB 1/80 W TC-L M625* This is a project specific solution. Alternative luminaire dimensions (e.g. 600 or 750 mm) are available. Please contact your local Zumtobel Staff representative.

Dual Component Lighting Systems MELLOW LIGHT IV SYNTO Louvre “High levels of efficiency and comfort”

MELLOW LIGHT IV recessed, SYNTO louvre controller Options • 600/1200/1500 widths • Diffuser optic with slotted metal sheet for all-round glare control • Dimmable Dali

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 TRANSLUCENT OPAL DIFFUSER WINGS utilising variable refractive index plastic for high efficiency 3 TONAL COLOUR STRIPS provide differential colour tone between primary optic and secondary chamber

1 2

4 PRIMARY COMPARTMENT enclosed for optimal T16 lamp operation, and to improve maintenance factor 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: 42 106 232 ML4 B EC 2/24 W T16 M600*

MELLOW LIGHT IV SYNTO

Design: Studio & Partners

The MELLOW LIGHT SYNTO is ideal for situations where a designer may wish to have more “focal glow” on the desk. The SYNTO louvre option of MELLOW LIGHT IV offers a higher direct ratio onto the working plane. The louvre and grid-mesh optics are interchangeable so can be used in combination to add even greater flexibility and diversity to an installation. The shielding angle from the louvre gives conventional glare control. This also provides higher operating efficiency. * For further details: www.zumtobelstaff.com/ml

3 4 5

113

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

“Optimised to get the best from TC-L lamps”

MELLOW LIGHT IV recessed, SYNTO louvre controller Options • 600/1200/1500 widths • Diffuser optic with slotted metal sheet for all-round glare control • Dimmable Dali

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 TRANSLUCENT OPAL DIFFUSER WINGS utilising variable refractive index plastic for high efficiency 3 TONAL COLOUR STRIPS provide differential colour tone between primary optic and secondary chamber

MELLOW LIGHT IV SYNTO The SYNTO louvre version of the MELLOW LIGHT IV has also been developed to maximise the benefits of using compact fluorescent TC-L lamps, which are available in ever increasing lumen outputs. The MELLOW LIGHT IV SYNTO has an optional visor which can be used with the higher output lamps, for example the 80 W TC-L. This visor spreads and distorts the lamp image by broadening it, thus reducing direct glare.

1 2

3 4 5

4 PRIMARY COMPARTMENT enclosed for optimal TC-L lamp operation, and to improve maintenance factor 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: ML4 B EC 1/80 W TC-L M625* This is a project specific solution. Alternative luminaire dimensions (e.g. 600 or 750 mm) are available. Please contact your local Zumtobel Staff representative.

Dual Component Lighting Systems MELLOW LIGHT IV Q Grid-mesh/SYNTO “Single Source Solution for LG3”

MELLOW LIGHT IV Q semi-recessed, grid-mesh controller Options • Colour tints available • VDT attenuator available • Balanced light version • Dimmable DALI

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 TRANSLUCENT OPAL DIFFUSER WINGS utilising variable refractive index plastic for high efficiency 3 TONAL COLOUR STRIPS provide differential colour tone between primary optic and secondary chamber

2

1 3

4

5 4 PRIMARY COMPARTMENT enclosed for optimal T16 lamp operation, and to improve maintenance factor 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: 42 106 246 MELLOW LIGHT IV ML4 B AB 2/24 W T16 Q606*

MELLOW LIGHT IV Q

most office applications would be a single luminaire solution to

MELLOW LIGHT IV Q Grid-

LG3.

mesh is a UK market driven solution, optimised for achieving light on to the ceiling. Necessarily this means the luminaire can not be flush and so the main optic is below the ceiling level. One unique feature of the MELLOW LIGHT Q is that it can easily be MELLOW LIGHT IV Q used as a surface luminaire, but it is actually designed to fit into a 600 square lay-in grid aperture. The MELLOW LIGHT IV Q derivative will put light on both the ceiling and walls and thus to

* For further details: www.zumtobelstaff.com/ml

115

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

“The no-risk louvre solution”

MELLOW LIGHT IV Q semi-recessed, SYNTO louvre controller Options • Colour tints available • VDT attenuator available • Balanced light version • Dimmable DALI

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 TRANSLUCENT OPAL DIFFUSER WINGS utilising variable refractive index plastic for high efficiency 3 TONAL COLOUR STRIPS provide differential colour tone between primary optic and secondary chamber

2

1 3

4

5 4 PRIMARY COMPARTMENT enclosed for optimal T16 lamp operation, and to improve maintenance factor 5 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: 42 106 252 MELLOW LIGHT IV ML4 B AC 2/24 W T16 Q606*

MELLOW LIGHT IV Q MELLOW LIGHT IV Q with a SYNTO louvre gives all the attributes of the grid-mesh version but renders a higher direct ratio onto the task area. The louvre and grid-mesh optics are interchangeable so can be used in combination to add even greater flexibility and diversity to an installation.

Dual Component Lighting Systems MELLOW LIGHT III “You see the light not the lamp”

MELLOW LIGHT III semi-recessed, perforated basket Options • Fly guard attachment • Surface mounting version available • Dimmable DALI

30

H1

4,5

H

B1

12

B2 B

Dropped perforated basket with opal inlay for total lamp diffusion.

Typical Cat. no: 40 735 010 MELLOW LIGHT III RCE 1/55 W TC-L M600*

MELLOW LIGHT III RCE

Still a much favoured lighting solution by many, but outclassed in the style and perfor-

The original in the MELLOW

mance stakes by the MELLOW

LIGHT concept family of lumi-

LIGHT IV range.

naires which comprises of a white painted involute reflector for the indirect component and a dropped basket for the lamp diffuser. MELLOW LIGHT III RCE. A simple solution to the Brightness Management philosophy of lighting the ceiling and vertical surfaces including the walls, partitions and peoples faces.

* For further details: www.zumtobelstaff.com/ml

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

117

“Entirely flush and entirely discreet”

MELLOW LIGHT III semi-recessed, perforated basket Options • Fly guard attachment • Surface mounting version available • Dimmable DALI

4,5

H

B1

B4 B2 B

Dropped perforated basket with opal inlay for total lamp diffusion.

MELLOW LIGHT III RCB This is the sister, flush recessed version of the MELLOW LIGHT III RCE. The RCB perforated mesh basket is flush with the recessing flange which may be preferred aesthetically or in situations where there are worries about air diffusion. Since the MELLOW LIGHT III RCB shares the main technology and design principle as the MELLOW LIGHT III RCE it offers all the main benefits and performance. NB. Made to order only as a project special.

Typical Cat. no: MELLOW LIGHT III RCB 1/40 W TC-L M600 “Project special”* NB. This luminaire is a project special with a minimum order quantity of 300 pieces.

Dual Component Lighting Systems SYNTO Louvre “The fundamentals of lighting synthesis”

SYNTO LRC semi-recessed, perforated basket Options • Fly guard attachment • Surface mounting version available • Dimmable DALI

277

The new generation of louvres, developed in the Research and Development laboratories of Zumtobel Staff, optimises the interaction between two unique technical developments. It combines the patented BIVERGENZ ®technology and the innovative Unique®cross-blade.

4,5

94

BIVERGENZ®plus Louvre technology

94 288 310

L = 1548

Typical Cat. no: 42 051 815 SYNTO LRC 2/40 W TC-L M600

SYNTO LRC The original SYNTO luminaire comprises of a white involute reflector for the indirect component and a semi-matt bivergent louvre for the direct component. Despite the flush louvre allowing no direct illumination on the ceiling this luminaire type, often referred to as a “Dual Component”, is a generic luminaire much favoured in the office lighting market. However, it is out classed in style and performance by the MELLOW LIGHT IV SNYTO range.

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

119

“High-tech appearance and performance”

SYNTO LRZ semi-recessed, perforated basket Options • VDT attenuator available • Surface mounting version available • Dimmable DALI

277

The new generation of louvres, developed in the Research and Development laboratories of Zumtobel Staff, optimises the interaction between two unique technical developments. It combines the patented BIVERGENZ ®technology and the innovative Unique®cross-blade.

SYNTO LRZ The SYNTO LRZ in the UK is a very successful derivative of the SYNTO LRC due to the additional “techy” appearance given by the ribbed involute reflector. However, this clever technology not only looks good but also attenuates the luminance above 60° compared to the white reflector on the SYNTO LRC. NB. Made to order only as a project special.

4,5

94

BIVERGENZ®plus Louvre technology

94 288 310

L = 1548

Typical Cat. no: SYNTO LRZ 2/40 W TC-L M600 “Project special” NB. This luminaire is a project special with a minimum order quantity of 300 pieces.

Project Special Lighting Systems MIREL T16 “Conventional high direct ratio downlights”

MIREL FEC-B 3/14 W T16, recessed, semi-matt louvre Options • 600/1200/1500 mm • 1/2/3/4 lamps • Dimmable DALI

Typical Cat. no: 42 159 150 FEC-B 3/14 W T16 EVG M600*

MIREL Bivergent® T16

The particular luminaire selection here is highly dependent

The latest generation of T16

on the ceiling choice. The most

Louvre products offers an ex-

common solution for average

tensive range, all with semi-matt

ceiling heights is the 3/14 W.

bivergent louvres, which meet ®

the onerous 1000 cd/m 2 luminance limitation to which some designers still seek to comply. The Bivergent ® principle causes the lamp image, when viewed from 75º elevation downwards, to roll down the principal reflector, such that cut off of the object (lamp) coincides with the image in the reflector disappearing.

* For further details: www.zumtobelstaff.com/miral

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

“Optional visor for high output lamps”

MIREL REH 2/40 W TC-L, recessed, semi-matt louvre Options • 600/1200/1500 mm • Dimmalbe DALI

Typical Cat. no: REH 2/40 W TC-L EVG M600* NB. Made to order only as a project special.

MIREL Bivergent® TC-L with Visor Despite the prowess of T16 lamps, TC-L lamp configurations are making a strong challenge on several counts, not just 500 square ceiling modules, but also the configurability of shorter, high power TC-L lamps in the Tartan Grid ceiling systems greatly favoured in the premium markets. As the TC-L lamps get more and more bright, their use in open louvre luminaires in office environments is highly questionable. In consequence with higher output lamps we offer a visor to spread the lamp image and reduce discomfort.

121

Project Special Lighting Systems MIREL T16 “Service Tile options”

MIREL T16

B1 181

These luminaires offer the flexibility to create project specific solutions.

B 200

Please contact your local Zumtobel Staff Project Engineer to discuss details of your requirements.

12

Typical Cat. no: FEC 2/24 W T16 “Project special”*

Service Tile Louvre Options – T16

very light in weight and have engendered a new maintenance methodology: “Basement Main-

In the Premium Office Market

tenance” wherein defective lumi-

so many of the projects use tar-

naires are replaced and returned

tan grid ceiling systems, where

for maintenance in the Plant

inevitably the result is the provi-

Room.

sion of a multi function service tile which also supports the principal luminaire type. Such louvre luminaires have colloquially come to be called “shoebox luminaires” alluding to their compactness. Zumtobel Staff have optimised luminaire design in this sector by achieving a 70 mm depth including integral emergency invertors. The luminaires are

* For further details: www.zumtobelstaff.com/miral

4,5

Subject to a minimum order quantity which is project dependant.

123

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

“Service Tile options”

MIREL TC-L

B1 95

These luminaires offer the flexibility to create project specific solutions.

B 114

Please contact your local Zumtobel Staff Project Engineer to discuss details of your requirements.

12

Typical Cat. no: FEC 1/36 W TC-L “Project special”* “New version with injection moulded louvre: FEK 1/24 W T16”

Service Tile Louvre Options – TC-L Again the TC-L lamp size and power options combined with new louvre technology offer new horizons in high direct ratio lighting concepts. Given that the ceiling will always remain relatively dark, the new cell louvre has a satin lustre finish that raises the Ceiling Brightness Impression CBI (see page 26). Meanwhile the availability of a refractor to split the lamp image, thereby reducing glare, means that the louvre solution still has something to offer.

4,5

Subject to a minimum order quantity which is project dependant.

Dual Component Lighting Systems MELLOW LIGHT IV Q Balanced/MIREL Balanced “Lighting with the power to change”

MELLOW LIGHT IV Q BALANCE semi-recessed Options • Colour tints available • VDT attenuator available • Standard Non-Balance versions • Dimmable DALI

1 SECONDARY CHAMBER acts as backlighting plenum to diffuser wings 2 TRANSLUCENT OPAL DIFFUSER WINGS utilising variable refractive index plastic for high efficiency 3 PRIMARY COMPARTMENT enclosed for optimal T16 lamp operation, and to improve maintenance factor

1 2 3 4

4 GRID-MESH or SYNTO LOUVRE CONTROLLER

Typical Cat. no: 42 159 352 ML4 B EB 2/24 W+2/24 W T16 M600 GET-BC*

MELLOW LIGHT IV Q Balance

Using separately controlled pairs

Coloured lamps or filters can be

of lamps, in the same optical

used for adding lighting effects

chamber, allows subtle or more

for nightscaping or to enhance

Recent research has hinted at

pronounced changes in the light

corporate identity in entrance

the possibilities associated with

produced by the luminaire.

and circulation areas.

light that changes in character over time since, as human

When equipped with different

beings, we appear to be pre-

colour temperature lamps the

programmed to prefer subtle

light output can be changed in

change. Whilst change in light-

colour, directional character and

ing can be achieved with combi-

quantity.

nations of luminaires there is no doubt that the widespread

When equipped with normal

application of Balanced Light

colour temperature lamps, spe-

Concepts will require the intro-

cial 17,000 K Blue “third eye”

duction of easy to apply innova-

colour lamps can be incorporat-

tive lighting solutions.

ed. This gives the opportunity of incorporating a small proportion

The MELLOW LIGHT IV Q

of melatonin suppressing blue

BALANCE is such a solution.

light into the lighting design.

* For further details: www.zumtobelstaff.com/ml

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

125

MIREL FEC-BC 4/14 W + 2/14 W BALANCE recessed Options • Standard Non-Balance versions • Dimmable DALI

BALANCE feature same as the MELLOW LIGHT IV Q BALANCE on previous page except in only one plane through the central inlay panel.

B1

B 12

4,5

ET 57 52

12

L1

Typical Cat. no: 42 160 124 FEC-BC 4/14-2/14 W LMB GET M600*

MIREL Balance The MIREL BALANCE solution has much of the potential of MELLOW LIGHT IV Q BALANCED but in a fully recessed form. The downward “task” light distribution is precisely controlled by louvres, whilst the central diffusing panel controls the light from the additional lamps above. This simple solution gives access to a whole plethora of effects including changing colour temperatures, changing intensity and changing direction.

* For further details: www.zumtobelstaff.com/miral

Innovation In Surface Linear Luminaires PERLUCE “Like a diffuser luminaire … only better”

PERLUCE D, enclosed louvre Options • Opal diffuser version • 310 mm Square version • Colour tints • Asymmetric wallwasher optic • Dimmable DALI

BIVERGENZ®plus Louvre technology The new generation of louvres, developed in the Research and Development laboratories of Zumtobel Staff, optimises the interaction between two unique technical developments. It combines the patented BIVERGENZ®technology and The grid of the 3D model illus- the innovative Unique®crosstrates the complex form of the blades. cross-blades. They guarantee optimum light distribution. Typical Cat. no: 42 159 052 PERLUCE D 1/54 W T16 IP50*

PERLUCE D

This cover also means that the fitting is enclosed which stabilis-

There are many, many work-

es the lamp operating tempera-

place installations where the

ture to maximise the efficiency

lighting possibilities are almost

of the lamp and luminaire.

entirely dictated by practical considerations such as wiring

Add into the equation a modern

points or potentially onerous

technical appearance and a

environments. In such

proportion of indirect and side

situation the PERLUCE louvre

glow and the PERLUCE D

scores.

louvre steps into the breach as the ideal workplace tool for

The PERLUCE D makes clever

factory offices, schools and

use of different optics and is

other education establishments

one of the few luminaires to

or simply where a different and

combine precise optical control

modern “techy” appearance is

via a louvre and protection via a

required in a clean, surface

clear cover.

mounted design.

* For further details: www.zumtobelstaff.com/perluce

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

127

“Wallwasher Options for Good Office Lighting Practice”

MIREL FEW 1/55 W TC-L M600, recessed linear The illumination of wall surfaces can be achieved in numerous ways. The reflector within the FEW is designed to give the best uniform distribution possible with a fully recessed luminaire. Small dimensions make it a very discreet solution to many wallwashing problems.

Typical Cat. no: 42 159 253 MIREL FEW 1/55 W TC-L EVG M600*

* For further details: www.zumtobelstaff.com/miral

PERLUCE WW 1/49 W T16, surface mounted, linear Several of the many applications where PERLUCE makes an ideal lighting solution, including schools, universities, healthcare and laboratories, also require good illumination of the vertical surfaces. PERLUCE WW offers this with the same style as the rest of the PERLUCE family.

Typical Cat. no: 42 159 366 PERLUCE W 1/49 W T16 PM IP54*

* For further details: www.zumtobelstaff.com/perluce

CLARIS II WW 1/28 W T16, surface mounted, linear The CLARIS II WW is a very useful addition to the CLARIS II range in installations of CLARIS where wallwashing is also required.

Typical Cat. no: 42 174 126 CLARIS II WW 1/28 W T16 EVG*

* For further details: www.zumtobelstaff.com/claris2

PANOS HWW 1/32 W TC-TEL 200 PANOS HWW uses a very clever ribbed detail on one side of the reflector to achieve a more asymmetric distribution without changing the appearance of the installation from the main direction of view.

Typical Cat. no: 60 810 240 PANOS HWW 1/32 W TC-TEL 200*

* For further details: www.zumtobelstaff.com/panos

Direct Downlight Lighting Systems PANOS “Multi-talented to meet any requirements”

Options • Reflector options: Faceted highly specular, Smooth highly specular, Smooth matt, • Smooth white coated and Faceted highly specular with PUREST SILVER (PSP+) • Recessed and surface mounted versions • Increased thermal reflection gives longer lamp service life • High and Low housing depths with horizontal and vertical lamp positions available • Versions with UGR:16/19 suitable for use in environments with DSE equipment • Reflector and cover ring unit made of high-quality,UV-resistant polycarbonate • Supplied as complete models consisting of luminaire and separately housed ballast unit • No-tool installation into ceiling for ceiling thickness' between 1–25 mm • Attachments ordered separately

High and Low Recessed

High and Low Surface

Low voltage and Metal halide PANOS versons

PANOS

17 % more reflective than aluminium). The silver is precisely

Standard PANOS reflectors pro-

applied onto the reflector by

duce exceptional photometric

means of a high tech sputtering

performance. But radical new

technique and sealed. This

design thinking can enhance

new coating technique can be

this still further: enter PSP+. The

applied to all highly polished

material used for the new PSP+

reflectors made of high-quality

coating is PUREST SILVER

polycarbonate in the downlight

(100 % silver – which is over

range PANOS L and H.

Typical Cat. no: 60 810 236 PANOS HF1/32 W TC-TEL 200*

Typical Cat. no: 60 810 251 PANOS HF 2/26 W TC-DEL 200*

* For further details: www.zumtobelstaff.com/panos

Typical Cat. no: 60 810 068 PANOS LM 1/26 W TC-DEL 175*

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

129

“Innovative downlight solutions”

2LIGHT/E1 1/42 W TC-TELI, recessed single module The lit effect of 2LIGHT is beyond description. It is a downlighter but that is where the similarity ends. 2LIGHT has a mystic halo effect that is entrancing and is ideal for break-out zones and common parts.

Typical Cat. no: 60 810 782 2LIGHT E1 1/42 W TC-TELI EVG*

* For further details: www.zumtobelstaff.com/2light

LIGHT FIELDS Mini E 2/32 W TC-TELI recessed The 300 mm square LIGHTFIELDS is a very neat corridor lighting solution. Good glare control yet recognisable luminosity allows this luminaire to depict the notional corridor.

Typical Cat. no: 42 159 215 L-FIELDS Mini E 2/32 W TC-TELI EVG M600*

* For further details: www.zumtobelstaff.com/lightfields

QUARTOS CQF 2/26 W TC-DEL EVG 260 Another square solution for corridor, but this is a downlighter with many lamp and reflector variants to make it suitable for numerous other applications.

Typical Cat. no: 40 938 519 QUARTOS CQF 2/26 W TC-DEL EVG 260

Free-standing Luminaires “Variable, adaptable lighting solutions”

Flexibility in the office requires

programmed individually by

variable, adaptable lighting

the user or controlled through

solutions which can be person-

four pre-set scenes. Its daylight

alised to cope with the chang-

sensor and presence detector

ing needs of individual users

and timer unit ensure the highest

As its name suggests, the

Staff in 1987, from Italian desi-

– or with frequent reconfigura-

quality illumination of the task

FLEXOS free-standing direct/

gners Sottsass Associati, the

tion of the workstations. For

area at all times.

ID-S FLEXOS Commissioned by Zumtobel

indirect luminaire, designed by

ID-S range has since become a

many installations, free-stand-

Da Costa & Wolf, takes the prin-

design classic due to it’s clear,

ing luminaires may be the

ciple of flexibility in workplace

simple lines and its versatile

favoured option. Research has

lighting one step further. The

technical performance. The

also shown that by giving

entire FLEXOS fitting be re-posi-

luminaire incorporates a safety

KAREA

office workers control over

tioned and is available with one,

diffuser made of either 4 mm

their local environment their

With its slender luminaire head

two, three or four luminaire

heat-resistant tempered silicate

productivity will increase.

the free-standing direct/indirect

heads, all of which can be rotat-

glass or ceramic glass, and has

Zumtobel Staff offers a number

KAREA luminaire model (and

ed and switched separately. This

a 12 mm glass frame with lumi-

of free-standing variants of its

matching wall light) has slim,

means that a single luminaire,

nous edges, integrated into the

existing ranges, as well as

geometric lines and is made

with one base and one electrical

head. Featuring a range of tung-

some specific free-standing

from simple, elegant materials.

connection can illuminate up to

sten halogen and metal halide

models offering a range of

The direct light component is

four desks highly efficiently and

lamps to produce a substantial

distinctive features.

controlled by a perforated metal

according to individual require-

indirect uplight component, the

optic, ensuring pleasant light

ments. Even the wall light ver-

ID-S can provide a pleasant,

distribution in the task area.

sion can be adjusted in two

warm lighting ambience. The

At the same time, the integral

axes, offering a variety of

adjustable matt anodised alu-

SensControl lighting manage-

options for optimum vertical illu-

minium reflector in the head of

ment system allows individual

mination or mounted on the top

the luminaire can be used for effective task lighting.

LIGHT FIELDS-S

adjustment of the illuminance,

of partition walls or inclined ceil-

With its slender luminaire head,

depending on the user’s person-

ings. FLEXOS comes with a

uncluttered lines, expressive

al wishes and needs, the indi-

choice of two optics – a louvre

materiality and elegant looks,

vidual task and the specific

optic, guaranteeing a large

the LIGHT FIELDS-S free-stand-

daylight conditions.

direct light component on the

ing luminaire is sympathetic to

working plane or a perforated

The SensControl system means

it’s surroundings. In terms of

steel optic, with a reduced direct

that lighting levels can be opti-

lighting quality, the free-standing

lighting component, to ensure

mised individually, depending on

more pleasant illumination of the

the task, ambient light and

workstation. FLEXOS can be

user’s requirements. The user

model shares the same unique

LANOS

micropyramidal optic as all other versions of LIGHT FIELDS. This

The LANOS luminaire has an

controlled either by the Sens

can choose between automatic

guarantees brilliant, glare-free

altogether softer, less angular

Control system or using WinDIM

and manual control in addition

lighting and a high output ratio.

appearance but still provides a

software allowing FLEXOS fit-

to a pivoting PIR sensor which

The asymmetric indirect compo-

high output direct/indirect light

tings to be switched or dimmed

automatically switches off the

nent provides pleasant general

distribution. Sophisticated con-

directly from a PC. Finally, a

luminaire whenever no move-

lighting and brightens up the

trols are also built-in to LANOS

bit of colour can be added by

ment is detected in the task

depth of a room. The light provi-

for manual or automatic control.

using colour trims to match the

area during a set period (up to

ded by LIGHT FIELDS-S can be

interior design or corporate

15 minutes). Depending on the

individually adjusted to suit both

identity.

luminaire version, the control

mood and taste, using the inte-

system is set and operated

gral SensControl lighting Man-

either via buttons or via an LCD

agement system, which can be

display.

WORKPLACE LIGHTING – PRODUCTS AND RESOURCES

633

“The future has arrived”

ø 538

1940

HELIODISC HELIODISC is a task luminaire with added flexibility since it has separately switchable direct, indirect and task illumination. This gives architects and lighting designers greater planning possibilities. HELIODISC is a design oriented luminaire with a transparent, organic design for office lighting according to the Task Area Concept in EN 12464.

For more information on any of the products featured on these pages please contact your local Zumtobel Staff Lighting representative.

131

VPI Wall Lighting

All current codes of practice for lighting primarily refer to the

VPI:

Ultimate Wallwashing

Recessed Wallwashing

notional horizontal working plane. This has tended to popularise the use of regular arrays of luminaires optimised to light a plane that none of us actually see. In fact, in almost every building we enter it’s the walls that dominate our vista. So, in every main interior space we would recommend the selection of at least one wall for a specialist lighting effect. Here we offer a sample of different wall lighting approaches, from wall-washing to scolloping. While wallwashing is a fairly well established technique, it is often not done well; on the other hand, wall scollop-

VPI 1: Ultimate wallwashing Typical offset: 600–900 mm Typical spacing: 900–1,200 mm Wallwashing with semi-recessed compact fluorescent luminaire gives a perfect soft wash right up to the ceiling trim. Luminaires: 778 301/302 compact fluorescent PANOS S QT-DE/HIT-DE/HST

ing usually happens without the designer intending it and usually has a messy, unplanned appearance. At Zumtobel Staff Lighting in the UK we have taken up the cause of wall lighting and developed the concept of VPI (Verti-Planar Illuminance, to give it its full name). This is a major design aid to the art of lighting walls. Here we present the “VPI” spectrum in a shortened form, with advice on simple offset and spacing. The brochure “Lighting Up the Wall: a VPI Design Guide” is available in english.

VPI 3: Linear/Continuous wallwashing Typical offset: 750–1,000 mm Typical spacing: 900–1,800 mm Here the lighting is very conspicuous, comprising surface or suspended linear luminaires, usually mounted on track. This offers great flexibility in aiming the fixtures, which can be moved up and down the track. Luminaires: ARCADE suspended continuous wallwashers RTXII WW – 1 or 2 lamp T16 XENO WW QT-DE/HIT-DE SPIRIT HST/TC-TEL/QT-DE

VPI 2: Recessed wallwashing Typical offset: 300–600 mm Typical spacing: 750–1,000 mm Wallwashing with fully recessed compact fluorescent luminaires that cannot light right up to the ceiling trim and give quite a fall off down the wall. This sometimes necessitates a second row of luminaires. The luminaire is from the PANOS family and looks identical to most downlighters in that range, which means it does give a “clean” ceiling appearance. Luminaires: PANOS HWW CFL PANOS MWW QT/HIT

WORKPLACE LIGHTING – THE VERTICALS

Multi-Cusp Scolloping

VPI 6 & VPI 7: Multi-cusp scolloping Typical offset: 150–300 mm Typical spacing: 500–750 mm Wall scolloping with incandescent, low voltage lamps in open reflectors and luminaires close to the wall, creates a multitude of secondary cusps on the wall. These can be incorporated into an intentional pattern. VPI 6 uses fixed downlights whereas VPI 7 adjustable versions can be aimed higher or lower on the wall. Luminaires: PANOS M low voltage recessed luminaires PANOS S low voltage recessed luminaires

Cornice Scolloping

VPI 8: Cornice scolloping Typical offset: 40–60 mm Typical spacing: 150–250 mm Here very gentle wall scolloping along the very top of the wall, at cornice level, is achieved by using fibre optics or low power, low voltage downlights. Luminaires: STARFLEX fibre optics STARLIGHT 2 recessed low voltage downlights

VPI 5: Feathered edge scolloping Typical offset: 450–600 mm Typical spacing: 1,200–1,800 mm When lighting rooms with ordinary compact fluorescent downlights, the first row of luminaires will very often be more than one metre away from the walls. By using the VPI 5 technique, the first row is deliberately positioned within 450 and 600mm of the wall, giving the appearance of a deliberate pattern of feathered edge scollops. These scollops will become “sharper” with a mirror or specular reflector, rather than one that is matt or white. Luminaires: PANOS L or H compact fluorescent QUARTOS compact fluorescent

Ellipsoidal Scolloping

VPI 9: Ellipsoidal scolloping Typical offset: 300–400 mm Typical spacing: 600–750 mm Very strong wall scolloping using ultra-narrow beam QR111 lamps in multi-directional downlights. The lamps are very precise and produce no stray light, so the scollop shape is almost a pure ellipse. Luminaires: PANOS S recessed luminaires recessed luminaires

133

Advisory Services References and Useful Websites

Advisory Services and References Lighting Solutions Consultant (LSC)

channel all our energies into

Software

Installation Instructions

compromise our fee earning,

Software for downloading free

Installation instructions for our

professional customers.

of charge can be found at

products are available to down-

Contact the UK Technical team on:

www.zumtobelstaff.co.uk by

load at www.zumtobelstaff.

[email protected]

following the Service Centre/

co.uk by following the Service

Download/Programs link. Soft-

Centre/Download/Installation

ware includes Zumtobel Staff

Instructions link.

specifier support and not to

Far from having a conventional salesforce, Zumtobel Staff in the

Grey Imports

UK employ a network of remote

Product Explorer, the COPHOS lighting design programs and

users who are entirely devoted

Specifiers may be surprised to

to servicing the needs of speci-

learn that ZS luminaires sup-

fiers. Our personnel are the best

plied on some projects in the

in the industry and, to ensure

UK may have been sourced, by

unparalleled specifier support,

the purchasing organisation,

have embarked on the 3 year

from unofficial channels and not

Zumtobel Staff Lighting Solu-

via the Official UK Sales Organi-

tions Consultant course. This

sation, based in Hayes Middlesex.

course is aimed at taking the

Ensuring that the UK operation

lighting specialist to a new level

is the source of all ZS product

of competence by broadening

required for projects allows us

knowledge in both the lighting

to invest for the future and to

Data Plug-Ins for lighting design

discipline and across the whole

continue to provide high levels

programs can be found at

building design spectrum. Thus

of UK specifier support. Unoffi-

www.zumtobelstaff.co.uk by

your LSC qualified Zumtobel

cially sourced product is not

following the Service Centre/

Staff contact is able to provide

covered by the normal compre-

Download/Photometric Data

professional and practical design

hensive warranty provided by

link. Use the data Plug-In to

advice on all aspects of work-

the UK operation and even

download quickly and easily to

place lighting from boardrooms

basic levels of pre and post

your computer the current data

to break-out zones, showrooms

order support is unlikely to be

of all Zumtobel Staff luminaires

to stairwells, atria to offices.

available.

in IES, LDT (Eulumdat) or TM14

other tools designed to ease considerably your daily work. Included is COPHOS Phoenix, THE working tool for lighting design – easy to handle, and supporting both emergency lighting and dimming with Luxmate.

Photometric Data

file formats. Detailed instruc-

ing design is Master of all

tions are also available covering

Flux Futura Seminars

www.zumtobelstaff.co.uk and follow Lighting Solutions Consultant.

the use of Photometric Data files in COPHOS Phoenix,

Held regularly throughout the

Installation, operation and maintenance instructions and datasheets are available for O&M Manuals at www.zumtobelstaff. co.uk by following the Service Centre and Product links.

To find out who in building lightTrades and not a sciolist visit

O&M Manuals

CAD Data 2D CAD symbol data for Zumtobel Staff products to be used in CAD programs is available at www.zumtobelstaff.co.uk by following Service Centre/Downloads/2D CAD data. Our 2D CAD luminaire library is available for AutoCAD in DXF and DWG format. 3D data is also available in several formats including DXF, Rhino, Lightscape and 3D Studio Max, free of charge from the same source.

DIALux and Relux.

year, the Zumtobel Staff Lighting Flux Futura “CPD” accredited

Technical Department

lighting seminars are a great

Specifications

learning experience. The purZumtobel Staff UK employs a

pose of these events is to

Individual products are described

team of qualified and experi-

address the various strategic

in detail at www.zumtobelstaff.

enced lighting engineers who

methods for illuminating the

co.uk by following the Products/

are available to assist specifiers

modern environment, particular-

Specifications link. This informa-

with advice and information on

ly offices.

tion can be downloaded for use

how to create the best possible

Places can be booked at

in lighting design programs and

lit space. We do not do lighting

www.zumtobelstaff.co.uk by

to generate specifications.

designs, preferring instead to

following the Flux Futura link.

Zumtobel Staff Group Environmental protection, health and safety guidelines The Group realises that all its business activities are associated with responsibility for environmental protection, health and safety, ascribing top priority to dealing with these issues. The environmental protection, health

WORKPLACE LIGHTING – ADVISORY SERVICES/REFERENCES

135

and safety guidelines of the Group thus reflect its commit-

Useful Websites

ment to ensure that sound envi-

the UK and Ireland’s largest

association with the British

professional lighting association

Institute of Facilities Management (BIFM).

ronmental protection, health and

www.products.bre.co.uk/bree-

and is dedicated solely to ex-

safety measures are implement-

am/index.html – BRE Environ-

cellence in lighting.

ed in all its business areas, sig-

mental Assessment Method

nalling that in this respect it

(BREEAM), Building Research

www.iald.org – International

LUXMATE are Lighting Manage-

seeks to apply high standards

Establishment (BRE)

Association of Lighting Design-

ment and Daylight harvesting

ers, Chicago, USA

specialists and are part of the

group-wide at international level. Preparations have been made

www.bco.org.uk – British

with the aim of integrating envi-

Council for Offices (BCO)

www.luxmate.co.uk –

Worldwide Zumtobel organiwww.lightright.org – The Light Right Consortium aims to shift

ronmental protection and industrial occupational safety into the

www.bifm.org.uk – British Insti-

the paradigm of lighting specifi-

quality management system.

tute of Facilities Management

cation and installation in com-

Zumtobel Staff is thus prepared

(BIFM)

mon practice toward ergonomically designed lighting solutions.

for ISO 14001 certification. www.bsi-global.com – BSI

Quality management system certification

British Standards is the Nation-

www.lif.co.uk – Lighting Indus-

al Standards Body of the UK

try Federation (LIF)

www.cibse.org – The Char-

www.diag.org.uk – The Euro-

ZUMTOBEL STAFF has been

tered Institution of Building Ser-

pean Energy Performance of

certified according to EN ISO

vices Engineers. The Society

Buildings Directive (EPBD)

9001 since 27 May 1991, and

of Light and Lighting (SLL) is

comes into force in the UK in

according to EN ISO 9001:2000

part of CIBSE and acts as the

January 2006, and will have

since 27 November 2003.

professional body for lighting

major business implications for

This certificate is acknowledged

in the UK

all owners, operators, design-

by IQ Net partners in more than 30 countries.

Glossary of Terms For a glossary of terms please refer to the Zumtobel Staff Lighting main Product Catalogue.

ers and developers of new and www.dial.de – DIAL is a manu-

existing buildings. The Directive

facturer-independent services

Implementation Advisory Group

enterprise for lighting engineer-

(DIAG) has been established to

ing and building technology

advise the UK Government on

and is not profit oriented.

the energy performance of buildings and the implementa-

www.eldaplus.org – European

tion of the Directive in a timely

Lighting Designers’ Association

manner.

(ELDA+), Guetersloh, Germany www.workplaceintelligence.co.uk www.icel.co.uk – Industry

– The Workplace Intelligence

Committee for Emergency

Unit develops and shares infor-

Lighting, ICEL is the leading

mation and ideas on creating

UK authority on Emergency

more distinctive, productive and

Lighting

healthy workplaces. Zumtobel Staff sponsor the WIU, which

www.ile.org.uk – The Institution

was founded by Herman Miller

of Lighting Engineers (ILE) is

and forward thinking inc. in

sation.

INDUSTRY AND ENGINEERING

SPORT AND LEISURE

Throughout the world, Zumtobel Staff is the competent reliable partner for innovative lighting solutions in all areas of application of professional interior lighting:

Industry and Engineering Sport and Leisure Transit areas and Car parks Offices and Education Presentation and Retail TRANSIT AREAS A N D C A R PA R K S

Hotels and Catering OFFICES A N D E D U C AT I O N

Art and Culture Health & Care Orientation and Safety Active Light

With production plants in Austria, Germany, Australia and the USA, and sales organisations in all major European markets as well as commercial agencies in most regions of the world, Zumtobel Staff is one of the biggest P R E S E N TAT I O N A N D R E TA I L

HOTELS A N D C AT E R I N G

international enterprises in the lighting sector.

As a leader in innovation, we guarantee our customers global competence in lighting consulting and design assistance, superior product quality and future-proof technologies – from individual luminaires to electronic lighting management systems.

ART A N D C U LT U R E

H E A LT H & CARE

Corporate goal: We want to use light to create worlds of experience, make work easier and improve communications and safety while remaining fully aware of our responsibility to the environment.

Track and spots

Modular lighting systems

Down-/uplights

Recessed luminaires

Surface-mounted and

pendant luminaires Wallwashers

LED, task, wall and uplights

United Kingdom Zumtobel Staff Lighting Ltd. Unit 4 - The Argent Centre, Pump Lane Hayes/Middlesex UB3 3BL Tel. +44/(0)20 8589 1800 Fax +44/(0)20 8756 4800 Email: [email protected] www.zumtobelstaff.co.uk USA and Canada Zumtobel Staff Lighting 3300 Route 9W Highland, New York 1258-2630 Tel. +1/(0)845/691 62 62 Fax +1/(0)845/691 62 89 www.zumtobelstaff.us www.zumtobelstaff.ca Australia and New Zealand Zumtobel Staff (Australia) Pty. Ltd. 2 Wella Way Somersby, NSW 2250 Tel. +61/(2)4340 3200 Fax +61/(2)4340 2108 Email: [email protected] www.zumtobelstaff.com.au China Zumtobel Staff T5-2-152 Tayuan Diplomatic Compound, No. 1 Xin Dong Road, Chaoyang District 100600 Beijing Tel. +86/(10) 8532 3886 Fax +86/(10) 8532 3889 Email: [email protected]

Continuous row and

batten luminaires High-bay luminaires

Luminaires with extra protection

Lighting Controls

Hong Kong Zumtobel Staff Unit 4319-20, Level 43, Tower 1, Metroplaza, 223 Hing Fong Road, Kwai Chung, N.T. Tel. +852/(0)2503 0466 Fax +852/(0)2503 0177 Email: [email protected] Singapore Zumtobel Staff Representative Office No. 5 Kaki Bukit Crescent #04-03 416238 Singapore Tel. +65/(0)6848 2560 Fax +65/(0)6234 4972 Email: [email protected]

Norway Zumtobel Staff Belysning AS Industriveien 11 1481 Hagan Tel: +47/(0)670/62230 Fax: +47/(0)670/62269 Email: [email protected] Sweden Zumtobel Staff Birger Jarlsgatan 57 113 56 Stockholm Tel: +46/(0)8/26 26 50 Fax: +46/(0)8/26 56 05 E-mail: [email protected] www.zumtobelstaff.se Poland Zumtobel Staff Przedstawicielstwo w Polsce ul. Zuga 14/2 01-806 Warsaw Tel. +48/22 635 6499 Fax +48/22 865 1530 www.zumtobelstaff.pl Russia Zumtobel Staff Representative Office Office 2111/Skakovaya-17 125040 Moscow Tel. +7/095 945 3633 Fax +7/095 945 1694 www.zumtobelstaff.ru Head offices Zumtobel Staff GmbH Schweizer Strasse 30 Postfach 72 6851 Dornbirn, AUSTRIA Tel. +43/(0)5572/390-0 Fax +43/(0)5572/22 826 Zumtobel Staff GmbH & Co. KG Grevenmarschstr. 74-78 32657 Lemgo, GERMANY Tel. +49/(0)5261/2 12-0 Fax +49/(0)5261/2 12-7777 www.zumtobelstaff.de www.zumtobelstaff.com

Emergency lighting

Medical supply systems

Art.-No. 04 797 631-UK 04/05 © Zumtobel Staff Technical data was correct at time of going to press. We reserve the right to make technical changes without notice. Please contact your local sales office for further information. Printed on environmentally-friendly chlorine-free paper.

Lighting for the Workplace

www.zumtobelstaff.com