Total Lighting November 2012

14 www.tlmagazine.co.uk SEPTEMBER 2012

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TOTAL LIGHTINGTHE POWERFUL VOICE FORTHE LIGHTING INDUSTRY

NOVEMBER 2012 | 4.50

BACKLIGHT TECHNOLOGYCONTROL SYSTEMSPLASA REVISITEDBRIDGES

PLUS

Simon Pengelly interviewSimon Pengelly interview

Virgin territory

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Barrisol Lumire Acoustics

Aquatics Center - London 2012by Zaha Hadid

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lighting& video projectionRoss Lovegrove for Lasvit

Barrisol Lumire

Changy AirportSingaporearch. RSP ArchitectsPlanners & Engineers(Pte) Ltd

www.barrisol.com

Barrisol Lumire

Bresilarch. : Priscila Sperandio

Barrisol PrintCool Britanica Londonarch. : Wren Architecture

WORLD LEADER OF STRETCHED CEILING

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target parameters are less and less.

Nevertheless makers test each LED as

it leaves the production line and

classify it according to the properties of

its light output. This clarification is

called binning. Mid power LEDs falling

in the same bin are held together and

then shipped in lots 2000 to 5000

pieces to the users.

So where does this fit in?

Increasingly high specification lighting

schemes can be achieved by

employing the LEDs binning to best

effect. The laborious selection of bins

to match LEDs is now gone as

manufacturers such as Samsung offer

a range of mid-power LEDs at fixed

colour temperatures with 3 step

Macadam variations.

This makes difference between light

sources a thing of the past. New ways

of mixing LED bins into kits that will

always produce the same colour

coordinates are about to be released

and those will possibly take away the

price premiums asked by makers for

closely binned LEDs.

LED light sources are still more costly

than most of their rivals. LED efficacy

is now putting them above almost all

other artificial light sources. The

interplay of these two factors has

caused designer and user uncertainty

and greatly reduced the up-take of LED

sources.

But the balance is now swinging in

favour of quality LED sources

employing mid-power LEDs because of

their need for little or no replacement or

maintenance. Fundamental to that is

the reliability and life of the LEDs given

by LM80 figures.

Much has been said about LED

lighting, but many believe that it still

remains to be proved and indeed is a

technology that may take many years

to be universally adopted. But a quiet

revolution is under way. Where and

how did that revolution start?

We all now take LED backlights for flat

screen TVs for granted as they bring

thinner panels to our living rooms and

a brighter more reliable viewing

experience. What powered the

changeover from old cold cathode

backlight TV screens was the

development and mass production of

mid-power LEDs. Leading TV makers

such as Samsung needed to work on

both technology and manufacturing

costs to create the LED backlit TV

screen. The experiences and

innovations are now applied to a new

range of LEDs that are employed

within numerous types of lighting. The

mid power LED has now been adopted

as a pivotal technology to bring LEDs

into the mass market.

Historically the market leaders made 1-

3 watt LEDs to be employed in lighting

systems. Smaller LEDs struggled to

deliver good efficacies and due to

relatively lower production rates and

outdated product designs the cost per

lumen was just not economical.

Driven by flat screen backlighting and

feeding off of large investments and

innovations in extremely high volume

automation an important change

happened and the traditional 1-3 watt

LEDs efficacy and cost per lumen has

been surpassed with mid-power LEDs.

With their adoption in lighting a turning

point is being reached.

So what are mid power LEDs?

Typically they are tiny devices

measuring a few millimetres square.

Seoul Semiconductors latest device

has a footprint of 2 x 3 mm and the

Samsungs MP23 series 2.3 x 2.3mm

both with a height of less than 0.7 mm.

With those dimensions

they weigh very little and thus the

hundreds of them that are required to

provide the light source for a ceiling

luminaire will weigh less than

250grams. In broad terms their light

output flux and efficacies vary

according to the colour temperature of

the light produced, its Colour

Rendering Index (CRI) and the current

running through the LED. Under certain

conditions greater than140 lumens/watt

are achievable.

Mid-power LEDs dissipate 0.2 to 1.2

watts and are used in closely spaced

arrays. With the individual light sources

close together, a homogeneous light

panel can be achieved with minimal

light loss by using an inexpensive

diffuser so a continuous light is seen by

the viewer without hot spots or glare.

In modern offices, work areas and retail

spaces the quality of artificial light sets

the scene and enhances the

experience of those in it.

Also in the home or on the street

careful consideration is required to

provide light of the desired quality. The

driving parameters behind this are the

colour temperature of the light coupled

with the lights quality given by the CRI.

But not just the colour temperature and

CRI are to be considered. The

consistency of colour temperature

between light sources is demanded by

lighting designers to produce top

quality lighting schemes.

Tolerances of material properties and

processes in the making of mid-power

LEDs lead to small variations in optical

parameters. Research and

development and the perfecting of

production techniques means that

increasingly the variations from the

Mid Power LEDs The Driving Force Behind the LED Lighting Revolution

Close-up of the new Seoul Semiconductor

3020 mid power LEDs

By John Turney - Divisional Manager YEG Opto

A 2 coin highlights

the small footprint of

the Samsung MP23L

mid power LEDs

So what is LM80? IES LM-80-2008 is

the industry standard that defines the

methods for testing LED packages to

determine their lumen depreciation

characteristics. The test data now

enables LED luminaire and lamp

manufacturers to satisfy ENERGY

STAR lumen maintenance. LED

makers evaluate their LEDs over 6000

-10,000 hours at different temperatures

and then from that data expected

statistical lifetime data can be

accurately produced.

Designers of LED engines aim to

maintain the LED within a given

temperature range whilst in operation.

Then from the LM80 data available the

lifetime of the LED source is

calculated. 50,000 to 100,000 hours

projected L70 life times (TM-21

calculated) are not uncommon.

It is now undoubtedly true that great

things come in small packages. Mid-

power LEDs are here to stay and

power our lights of the future.

Indeed it could be that TV screens can

now be viewed as the turning point in

the design of luminaries and lights for

the next 25 years

John Turney heads Young Electronics

Groups Opto division and has more

than 30 years experience in the

optoelectronics industry. YEG Opto is

a distributor and solutions partner for

Seoul Semiconductor and Samsung

LED. Both companies have world

beating mid-power lighting LEDs.

More information on YEG Opto can be

found at: www.yegopto.co.uk

Mid Power LEDs

YEG Optos Area Lighting Module

populated with 98 Samsung

MP23L LEDs

John Turney

Choosing the right supply partner can

make all the difference - at YEG Opto

we offer a personalised service with

dedicated LED product experts to get

you through every stage of the

development process. From

component supply to complete light

engine design and build, we tailor our

service to fit you. Let YEG Opto guide

you to the light, contact us now on

+44(0)1494 753500 or visit our

website at:

Total LED Solutions

www.yegopto.co.uk

YEG Opto is part of the Young Electronics Group Coronation Road, Cressex Business Park, High Wycombe, Buckinghamshire HP12 3TA Email: [email protected]

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Total - Nov.pdf 1 10/10/2012 12:46

NOVEMBER 2012 www.tlmagazine.co.uk 7

inside3958

29

73

51 people

09 Comment Editor, Gill Anderson looks at

events affecting the industry

11 News & monthly event diary

13 Simon says Simon Pengelly on making lighting

useful and beautiful

energy efficient lighting19 News

21 Smart-iPants Ams Jan Enenkel on LED

backlighting technology

25 Still in the dark? Auroras Paul Davidson on the

savings to be made by going LED

29 Project Touchdown! Lighting Vancouvers BC

Stadium for rival teams

commercial lighting37 News

39 Bridge the gap The art of illuminating our citys bridges

specialist lighting49 News

51 Control freak Switched on thinking for interiors

58 Project Race for technology The solution for a growing

team of race cars

event lighting65 News

67 PLASA - revisited A second bite of the

entertainment event cherry

73 Project Tree of Light Renegades work during the

London 2012 Festival

07.contents.ga.nov.indd 7 23/10/2012 16:27

Call today for details01603 211 511

Anglia LED Lighting Gainsborough House, Dewing Road, Rackheath, Norfolk, NR13 6PSwww.anglialedlighting.co.uk [email protected]

www.anglialedlighting.co.uk

In partnership with

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Live in rooms full of light: Cornelius CelsusAs the UK collectively retards its clocks, I cant help but think of lighting manufacturers the length and breadth of the country, rubbing their hands with glee at the prospect of the dark evenings to come, and the national dash to renew light fittings. Assuming it really is the boom time of the year for the industry, presumably we all suddenly notice that weve been living and working with poor, or non-existent lighting for the past year?

Its been lovely to meet new people and renew acquaintances at the recent spate of shows and exhibitions, but its been a busy few weeks, hasnt it? I was starting to feel as if the only subjects were covering at TL are event-related, so it comes as something of a relief to reach the end of the late summer show season with a final nod to the success that was PLASA this month (p67) and just LuxLive to go before the end of the year. One point of note is that, despite the on going, double-dip, doom and gloom, on-going misery of the recession, visitor numbers (both from the UK and further afield), at all of the events, seem to be holding up, whci can only be good for the brave exhibitors who not only spend a small fortune on stands and R&D to get new products to market in time to launch at these events, but who also have to staff them, often at great expense to the business.

It wont be long before we start looking ahead to Christmas with all of its excesses, including some of the lighting installations around the country. Next month well be bringing you a selection of some of the best festive lighting designs from our stores and shopping centres each guaranteed to make little faces shine with pleasure and anticipation, and even an old heart beat a little quicker. Although to the independent store manager in a small Suffolk town who thinks its acceptable to hang Christmas lights and decorations on 30 August it isnt! I found myself doing cartoon-like eye rubbing when I saw them.

This months TL features some interesting case studies, including the lighting design for Vancouvers BC Place Stadium, which houses two sporting teams, which play in different colours. Instead of re-painting twice a week, the management came up with the idea to colour the arena and surroundings using light innovative and so much more practical.

I must confess to a weird love of bridges old, new, contemporary or traditional with crenelated stone, it makes no difference. I love them all. I think its something to do with their representation of a journey they call me to cross over and see whats on the other side. In recent years, it has become the norm for bridges to be lit usually to stunning effect, so Im pandering to my own obsession this month with a look at some of the most stunning.

Enjoy and dont forget to turn back those alarm clocks.

Gill Anderson

Editor

THE TEAM

EditorGill [email protected]

Design/productionHeather [email protected]

Production co-ordinatorAn [email protected]

Web development managerMitchell [email protected]

Advertising managerAndrew [email protected]

Managing directorJay [email protected]

Scan this QR code to register for your free copy of TL

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No part of TL may be reproduced, stored in a retrieval system or transmitted in any form by any means, without the prior written consent of the editor. TL will make every effort to return picture material, but it is sent at owners risk. Due to the nature of the printing process, images can be subject to a variation of up to 15 per cent, therefore Aston Greenlake Limited cannot be held responsible for such variation.

Copyright 2012. All rights reserved. ISSN 2047-9573

09.nov.comment.ga.indd 9 23/10/2012 16:33

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P E O P L E

Floodlight

Its a date...5th LED/OLED Expo 16-18 January 2013 Tokyo Big Sight, Japan www.light-technology.jp

Interiors UK 22-25 January 2013 NEC, Birmingham www.events.ubm.com

The ARC Show 27-28 February 2013 Business Design Centre, London www.thearcshow.com

EcoBuild5-7 March 2013 ExCeL, London www.ecobuild.co.uk

Hong Kong International Lighting Fair 6-9 April 2013 HK Convention & Exhibition Centre, Hong Kong www.hktdc.com

Prolight+Sound 10-13 April 2013 Exhibition Centre, Frankfurt, Germany www.pls.messefrankfurt.com

Light+Building 21-26 April 2013 Exhibition Centre, Frankfurt, Germany www.light-building.messefrankfurt.com

NEW APPOINTMENTS...

Robert Juliat has announced the appointment of Claus Spreyer as sales director.

Spreyer comes to the post after stints with Lightpower/MA Lighting in Germany, where he was responsible for partner relations, and two years with A & O, the Germany-based manufacturer of Sky Tracers, in the position of executive VP.

As sales director at the company, Spreyer will

participate in raising the brand to an even higher level and extending its technology leadership position through unique innovations.

Ive known Robert Juliat for a long time and Im now looking forward to bringing in all my knowledge, my international contacts and all my strong relationships, he commented. Understanding how the industry works, I see good possibilities for the company to

grow and I want to be an active part of this process.

Robert Juliat CEO, Francois Juliat noted: Claus has an excellent knowledge of our industry and our global network, and is strongly interested in new technologies. I am confident that the experience he brings to Robert Juliat will be of great value in our development going forward. We are very happy to welcome him to the team.

CONGRATULATIONS!MHA Lighting has scooped a top accolade for an innovative lighting product, which is helping NHS Trusts fight hospital-acquired infections.The company fought off tough competition to win the Product Innovation category of the Retrofit Awards 2012 for its TiLite luminaire. The sealed unit design, which stops dust, bacteria and insects from gathering around warm light fittings and becoming a potential source of infection impressed the judges. TiLite, which has received support from Shadow Health Minister, Andy Burnham, was the only lighting solution to be shortlisted in the Awards, which reward and celebrate design, engineering and construction excellence that prolongs the active life of buildings and infrastructure.

Tom Harrison, MD said: Were thrilled to win this category in Product Innovation as this truly reflects what MHA Lighting is all about- a forward thinking firm which takes pride in finding innovative lighting solutions for a whole range of clients. TiLite means that NHS Trusts with older estates are able to improve their infection control rates, sustainability and carbon emissions without having to look at new build options.

Paul Finch, editorial director of The Architects Journal noted: Retrofit continues to be critical in upgrading the built environment to meet the challenge of a low-carbon future. These awards are an excellent way of acknowledging success in this important market.

luminaire. The sealed unit design,

of infection impressed the judges. TiLite, which has received support from Shadow Health

LIKE-MINDED GATHERING

The recent RCA event, Urban Spirit of Light was presented by Megaman

in association with the Helen

Hamlyn Centre for design at The Royal College of Art. The seminar speakers included Mark Sutton Vane of Sutton Vane Associates; light artist and sculptor, Raphael Daden; and Megan Charnley and Tom Jarvis from the RCA. The discussion looked at three main questions:

How can embedding light within urban landscapes promote social interaction of culturally diverse communities?

How can architects, designers and planners deliver a reduction in energy whilst continuing to meet the needs of local residents?

How can inventive lighting schemes transform under-lit pockets of urban space?

The event also saw the launch of In The Shade, a publication by Megan Charnley and Tom Jarvis of the Helen Hamlyn Centre for Design. Members of the lighting industry can request a copy by contacting Carl Gunaratnam at Neonlite International.

The recent RCA event, Urban Spirit of Light was presented by Megaman

in association with the Helen

Hamlyn Centre for design

11.peoplenews.ga.indd 11 23/10/2012 16:57

lighting the futureintroducing the new leader of the Denver Elite pack

Holophanes new Denver Elite Pole fuses contemporarystyling and dynamics with the controlled performance expected from one of the market leaders in exterior luminaires.

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P E O P L E

Simon saysSimon Pengellys name is synonymous with bespoke, high quality furniture design, but he admits to an affinity with lighting. TL caught up with him to discuss his latest work - a wall light for Italian manufacturer, Foscarini

Pengelly Design has an enviable portfolio spanning furniture, lighting, product, interiors and transport and in 2011, principal, Simon Pengelly was the winner of the coveted Compasso dOro, Italys most coveted design award.

The company has been branching out into lighting design, and with the

recent launch of Virgin Atlantics Upper Class Suite, and a new wall light for Foscarini, 2012 has consolidated the studios international reputation.

Pengelly is recognised for the understated elegance of designs that are rigorous in their engineering detail and functionality whilst maintaining a purity and lightness of touch. The studio applies a holistic approach, treating each project as a problem-solving exercise. A careful balance is adhered, creating a practical, pure and emotional response to each brief, with functionality and subtle detail revealing itself as the product is used and enjoyed.

According to Pengelly: There are few things more exciting and interesting to us than being able to make our mark with understated design, so whats the background to the man behind the company, and wheres he going next?

13_16.interview.ga.indd 13 23/10/2012 17:17

14 www.tlmagazine.co.uk NOVEMBER 2012

P E O P L E

Where did your interest in design stem from? Were you brought up in a particularly artistic atmosphere? Yes, both my parents and my sisters are creative people. Dad, now retired, was a furniture designer.

You founded Pengelly Design in 1993; what were you working on back then? In the early days, I was mainly occupied with designing for Habitat, but I was already beginning to formulate my own furniture range.

Where did you learn your trade? Originally from my Dad, who trained me at the bench during weekends and school holidays.

Where do you think your interest in lighting has come from? Its difficult to say - Ive always had an affinity with lighting.

Whats the most prestigious project youve worked on to date? Its got to be the Upper Class Suite for Virgin Atlantic. It was a huge project; it took four-and-a-half very challenging and enjoyable years to complete. We were tasked with increasing passenger numbers, lengthening the bed and providing more personal space for each

passenger, the spacial constraints were the most challenging as each decision had a knock-on effect to so many other aspects, that at times it was almost overwhelming.

Youre obviously expanding your design work to include lighting with the launch of Innerlight. So were you involved in the lighting element for the Virgin project? Yes, very much so. We designed the individual passenger environment, which includes lights for reading, ambient lighting and highlights. Additionally, we had quite a lot of input in the cabin lighting, which is all about creating different moods during long haul flights.

What do you feel is the most important element of the lighting design for a commercial interior, and is that necessarily the same for a domestic job?

We had quite a lot of input in the cabin lighting, which is all about creating different moods during long haul flights

Above: Virgin Atlantics new Upper Class Suite, designed by Pengelly


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Like a lot of our work, we see the boundaries between domestic and commercial as being blurred and we therefore try to create products that cross over between the two.

How do you tackle a new project can you take us through the process? It depends entirely on the brief, as each project is different, and requires a tailored approach.

So how did you approach designing your first light fitting? Was the brief very different from what you were used to when designing furniture? The brief was for a wall light. We started by asking ourselves why does a wall light have to look like a light seeing as its going to spend most of the time switched off. If its switched off, then its not working unless it could also be considered as a sculpture in its own right one that uses ambient light to enhance its form, making it work whilst switched off.

What are you currently working on? At the moment, its a mixture of more lighting, furniture, transport and product designs so a very mixed bag.

What innovations in the world of lighting excite you? To me, one of the most important innovations of the moment is the aim to make solar-powered lighting more affordable, so its there for use in times to come when the need to generate more electricity becomes a problem.

The LED saviour of the 21st century, or a monstrosity? I wouldnt go as far as saying its a saviour. The LED certainly has its advantages and is a leading technology its definitely not a monstrosity!

What about the emphasis currently being put on LED as the light source of choice for almost every application? Are you happy to design using them if thats what the client wants, or do you prefer to be able to experiment with a variety of light sources? We like to have the freedom to design using the most appropriate light source for the particular application were looking at.

In your opinion, whats the best light source currently available? It has to be LED, because it is probably the most versatile.

On a more personal note, can you describe what makes you tick? Being given the opportunity to solve problems.

So who, or what inspires you? Anybody who is interested and passionate enough about a subject to do something about it!

P E O P L E

If you had to change career now, what would you like to do? Id be an entomologist.

Really? So assuming the answer isnt, up to your elbows in creepy crawlies, where do you hope to be in 10 years time? Still standing - and hopefully doing more of what we do now.

Whos your favourite lighting designer? Marc Sadler. The appeal of Sadlers work is in its unpretentiousness, work that interprets the language of material and manufacturing characteristics in an expressive and accessible way.

Finally, how would you describe your life? Busy and happy.... and made to look good by a wonderful and understanding wife, and a great team of colleagues.

CONTACTPengelly Design www.pengellydesign.com

To me, one of the most important innovations of the moment is the aim to make solar-powered lighting more affordable


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And for businesses

Financing domestic LEDsFlux has announced that its luxury domestic LED product range will be supported by the Switch & Save financing scheme; offering a quality, money-saving lighting solution without the high-cost barriers.Through the pioneering scheme developed with its financial partner, Hitatchi, Flux plans to offer a convenient solution to households looking to switch to LED lighting.

According to the company, the benefits include a potential reduction in both a households energy costs by 85 per cent as well as its carbon footprint. The scheme aims to provide consumers with a two-year interest-free facility, with repayments covered by the anticipated savings the household will expect to make.

Tracy Fearn, global brand manager at Flux commented: We are delighted to be launching Flux LEDs and Switch and Save to the British public. The brand is innovative, aesthetically beautiful, high quality and competitively priced. Flux is in the business of helping people accentuate their home with fabulous lighting, whilst reducing their electricity bills and environmental impact. Now that the final phase on the ban of traditional light bulbs has begun and as home energy bills continue to rise, there seems no better time to install LED lights.

E N E R G Y E F F I C I E N T L I G H T I N G

news

ArmadilloLED has secured funding totaling 230,000 from two private investors to help fund product development and continued expansion into new international markets.The deal was supported by Chris Chapman of My Business FD, the London and Cambridge-based provider of part time financial directors to growing companies, which has been part of Armadillos management team for two years, working with them on all financial aspects of the firms growth strategy.

Chapman said: Armadillo has been a fantastic company to work with. It is typical of Britains SME sector that is right now driving our economic recovery. The Armadillo team absolutely understands that the right management team is key to building sustainable growth. Since we have worked with Armadillo, the business has trebled its investment in research and development which is quite frankly the key to success in a competitive global marketplace.

SECURE FUNDING

Award-winning advancesLED Engin, Inc. has won the Advances in Lighting category of the annual e-Legacy Awards. The competition winners were announced at a gala awards ceremony in London. The prize was specifically awarded for the companys ViviLux family of high-efficiency, high CRI, compact, single LED emitters which, combined with secondary total internal reflection (TIR) lenses, produce up to twice the centre-beam lux of array-based LEDs with reflectors. This means that, for a given level of lighting intensity on a target area, only half the energy is required. LED fixtures based on the companys LuxiGen platform are found in entertainment lighting and commercial applications, including retail stores and hotels, where well-controlled levels of directional light are needed.

The newly-introduced Advances In Lighting award was the most fiercely contested aspect of the competition this year, which makes LED Engins achievement all the more impressive, commented Alistair Winning of EPD Magazine. The company is a deserving winner and we look forward to seeing more of their innovations in the year ahead.

From lighting the Olympic opening ceremony to decorating Tower Bridge (and saving 40% on its energy bills in the process), LEDs have certainly made their mark this summer. Now LED specialist, Light Planet is raising the bar further with a new finance initiative to support the implementation of energy efficient lighting technology by businesses.

Having successfully raised 5m to fund the pay-as-you-save scheme, Light Planet is offering businesses LED lighting solutions worth up

to 50,000, giving them the power to reduce their energy bills and carbon footprint without having to produce up-front investment or commit to loan schemes.

Despite the potential benefits, it is often difficult to secure investment, particularly for retrofit projects, a problem compounded by the current economic climate. Rather than expecting organisations to bear the brunt of investment, Light Planet will simply recoup 80 per cent of the financial savings

achieved as a result of installing this energy efficient technology.

MD, Simon Leggett commented: We have complete faith in the potential of LED solutions to deliver both significant energy and monetary savings. Our new finance initiative will give more businesses access to the many benefits of the technology and encourage increased adoption of energy efficiency measures.

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19.ee.news.ga.indd 19 25/10/2012 16:23

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Smart-iPantsA first for TL this month, as Jan Enenkel, reference application engineer at ams looks at LED backlighting technology and the race for bigger, better and brighter backlit screens on smart phones. He describes how portable device designers can extend battery run-time by improving the efficiency of LED backlight systems, explaining the benefits of an LED driver topology that is today little used in mobile device displays

In the latest generation of smartphones, which feature large displays suitable for showing web pages and video, the LED backlight system is one of the biggest power loads in the device, and has a marked effect on overall power consumption and battery run-time.

What is more, users expectations have grown much more demanding in the past two years: they now expect to be able to play video and access the Internet for several hours without recharging the battery yet both activities require the processor and backlight system to work at a high rate. And as users demand ever-larger displays, the number of LEDs in the backlighting system grows, putting even more pressure on the power budget.

Operation of the backlighting systemThere are three building blocks in a backlighting system: a battery to store energy, the LED driver, and the LEDs. To increase run-time, extra power - or power savings - need to be found in one or more of these three blocks. Increasing the size of the battery would add energy capacity, but a more expensive, bigger, and heavier battery is an unappetising option for the mobile phone designer.

The LEDs form part of the display assembly, placed on a flexible PCB, and emitting light from the edge into a diffuser behind the LCD panel. The number of LEDs depends on the display size, available space and required resolution. The forward voltage of the LED is normally in the range 3.0-3.4V. Todays mobile phones can contain as many as 12 LEDs.

The arrangement of the LEDs can vary: for instance, all the LEDs could be connected together at their

Comparing driver topologies:

the search for higher efficiency in mobile phone LED

backlight system


21_23.ee.backlight.ga.indd 21 31/10/2012 10:07


anode, with an output pin at each cathode. This connection scheme can be driven by a capacitive backlight driver, and is widely used in small displays.

A more popular approach in smartphones, which have bigger displays and hence more LEDs, is to connect all the LEDs in series as a single string. The advantage of this topology is that it needs only two connection pins to the display. At ams, we use a nomenclature, Series x Strings, to describe topologies with one or more strings of LEDs. For instance, a single string of eight LEDs connected in series is described as 8S x 1 (see figure 1).

Reducing the lossesAn inductive DC-DC converter is more suitable for driving single or multiple strings of LEDs than a capacitive driver is. And the more LEDs are connected in series, the lower the efficiency of the inductive DC-DC converter falls.

The problem is the result of both switching losses and core losses in the inductor; these losses get higher, the higher the voltage at the converter. The illustration at figure 2 shows the effect of a rise in output voltage on the conversion efficiency of the AS3676 (at a constant output power). A comparable fall in efficiency would be found in any inductive DC-DC converter on the market today (see figure 2).

So why does output voltage increase as the number of LEDs in a string rises? The reason is that the output voltage required from the DC-DC converter is calculated by multiplying the forward voltage of the LEDs by the number of LEDs, plus the compliance voltage of the current sink. For example, in a single string of 12 LEDs with a forward voltage of 3.2V, the DC-DC converter needs to boost the output voltage to 12 x 3.2 + 0.5V = 38.9V. (0.5V is the compliance voltage of the current sink.) By comparison, in a multi-string configuration of, for example, 4S x 3, the maximum voltage would be 4 x 3.2 + 0.5 = 13.3V.

In the multi-string configuration, the lower voltage of the DC-DC converter, 13.3V, results in lower switching losses and core losses than in a converter operating at 38.9V. This results in better efficiency, and also allows the use of smaller external components. Drawing on the phenomenon shown in figure 2, the improved efficiency of the multi-string topology can be seen to be attributable to the reduced output voltage of the converter.


In order to maintain or prolong battery runtime while driving larger displays, backlight system designers should consider implementing a multi-string topology





FIGURE 1

FIGURE 2

Clearly, system designers considering whether to adopt a multi-string topology will regret losing the simplicity of the two-pin connection to the display module, which the single string topology affords them. Indeed, they can evaluate techniques for improving the efficiency of single-string designs, such as:Increasing the size of the inductor Reducing the switching frequency Reducing capacitive losses at the

switching node Using a switching transistor with a lower

capacitance between drain-gate and drain-sourceUnfortunately, footprint and height are

both under extreme pressure inside a smart phone; in particular, manufacturers are constantly seeking to make their designs thinner, and this counts against any move to use a bulky inductor.

ConclusionThe conclusion, then, is clear: in order to maintain or prolong battery runtime while driving larger displays, backlight system designers should consider implementing a multi-string topology. This is because, in multiple strings, the output voltage of the DC-DC converter is lower than for a single string with the same number of LEDs, and inductive DC-DC converters operate more efficiently at lower output voltages, resulting in longer battery run-time. Multi-string designs can be implemented with ams converters, including the AS3492 [figure 3], a 2MHz backlight driver for up to ten LEDs (2S x 5) offering efficiency up to 90% with a coil of just 2mm x 1.2mm x 1mm; and the AS3677 [figure 4], an integrated lighting management unit including a 1MHz DC-DC converter with integrated 25V NMOS transistor, and driving up to 15 LEDs in a 5S x 3 configuration (see figures three and four).

CONTACTFor more information on backlighting, visit: www.ams.com

FIGURE 3

FIGURE 4

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12064Rob ANOLIS - inzerce 230x300 mm ArcSource_LUX.pdf 18.10.2012 14:57:46

Delaying the use of LED until the technology develops further will most probably cost you real money in the long term.Over the last decade, LED output has improved by 2000 per cent and the cost of equipment has fallen. But while youre waiting for the next evolution, anothers also in the pipeline. The net result is that your project is at a standstill - and youll never benefit from measurable energy savings that LED delivers. Sitting on the fence creates a waiting cost, and it needs to be calculated against replacing the lamp and luminaire. A quality lighting installation that reduces glare helps staff, increases vertical illuminance, impacts on work throughput and should reduce staff sickness and absenteeism. Improving profitability through productivity makes perfect sense.

So whats the next step?Lets be clear, replacing existing fluorescent-based lighting systems with LED solid state lighting requires a financial investment that delivers both long-term benefits and a short- to medium-term return on investment (ROI). A qualified lighting designer with

With more than 25 years experience in the lighting industry, Auroras Paul Davidson holds the CIBSE Lighting Diploma and is a member of the Society of Light & Lighting. His tip for the future for business - theres no time like the present to save money by investing in LED


STILL IN THE DARK?


experience in LED will develop a scheme to deploy the latest lighting techniques that meet current legislation. The design will include calculations for how people operate within the space. It will distribute the lighting at the prescribed levels where required for tasks, and at lower levels in walkway and transit areas to maximise energy efficiency. Making the right choice Equipment needs careful consideration as LED provides illumination through single chip, multi-chip or chip on board (COB) technologies. Specifying Colour Temperature (CCT) and Colour Rendering (CRI) are important, as the lumen performance of the luminaire could depend on it. Underspecifying the CRI will improve lumen performance but at the cost of a qualitative and aesthetically pleasing solution, one in which may not be ideal for working in.

Overheating is the major enemy of LEDs, as it limits lamp and luminaire performance and permanently damages the life characteristics. Heat has to be transferred to the ambient environment, and this heat transfer takes place primarily via conduction. An increase of 10 degrees C at the junction point reduces the LED lamp life by 30 per cent.

Let me tell it how it is:


25_26.ee.opinion.ga.indd 25 25/10/2012 16:29


LED lighting - when correctly operated - could offer lamp life of approximately 40,000 hours with little or no on-going maintenance during that period. Calculating ROI is often the determining factor when committing to project expenditure, but dont forget that the benefits of providing higher levels of illumination only where it is required, and the addition of lighting controls will shorten the period of return further.

Take control LED is an efficient light source that provides instant illumination and can be controlled through a number of systems. For offices, it is ideal as it provides the vertical illuminance required to make the environment feel pleasing, and by installing fittings that dim automatically on the activity of presence combined with that of daylight, allow the building user to maximise energy savings. In ancillary areas, there tends to be numerous short-term switching cycles. With LED, periods of lighting beyond automatic detection can be kept to a minimum, which is a major advantage over CFL.

Emergency lighting is always an issue as the majority of commercial installations have integral emergency equipment within standard luminaires. These in turn require high levels of power to maintain the batteries that power fluorescent light sources. Installing an alternative, standalone LED specification will allow for a more uniform driven solution that meets the legislative performance requirements, while minimising the parasitic load required to maintain the system. Talking $ To allow for the true cost of energy to be realised, first take into account current energy costs, and predicted cost increases based on Government statistics. Maintenance costs need to be added in respect of uplift in cost of lamps and equipment over time; and

Over the last decade, LED output has improved by 2000 per cent and the cost of equipment has fallen


whether cleaning of existing luminaires takes place. All of these figures must be part of the calculation.

The big question to be asked is how much and how quick? The answer is not so easy, as every project is different in respect of the task being carried out, the size of the application, the task areas, the current lighting, the operating hours, continuous or infrequent use, the building orientation for daylight benefits, etc. The best solution is to ask for a survey of your building, and then consider the findings. However, a note of caution! This new solid-state technology is certainly very good - but make sure the advice comes from a knowledgeable source.

For example, an office lit with 600x600mm recessed switch-start modules will consume in excess of 80W per fitting, while the LED equivalent will be higher performing and consume less than 45W. Adding in lighting control and dimming to the scheme could add to the already achieved 45 per cent saving.

Design to save It doesnt stop there; designing the lighting installation to focus the light where it is needed rather than just everywhere, will provide additional energy savings and more importantly, either fewer or lower wattage fittings. Carefully designed installations that maximise the benefits of daylight and lighting control should, for an office environment that benefits for moderate natural illumination, provide savings of well in excess of 50 per cent. That cant be all bad, can it?

Yes, the bottom line will tell you instantly that a state-of-the-art LED lighting scheme requires substantial investment. But the sums should also demonstrate in more detail that over time, annual cost will diminish, as the savings achieved in energy and maintenance provide benefit and then reach the point of return. All savings beyond that point until the end of the equipments life are additional - and usually become substantial.

So, can you afford to wait? I would say not; if you are not maximising your benefits in a qualitative and energy efficient lighting solution, then your competitors are. And where does that leave you? In the dark! Aurora offers a lighting survey service for businesses.

CONTACTFor more information, visit: www.aurora.eu.com


25_26.ee.opinion.ga.indd 26 25/10/2012 16:30

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Touchdown!

Sacred, a temple to sport, an iconic structure all phrases used to describe the home venue of

sports teams by their oh-so-passionate fans. If I or anyone else foolhardy enough were to suggest that it would be possible for two sports

teams to share a stadium in the UK, the first argument would probably be how to introduce the

different colours that represent the teams. Well, what if we abandoned paint, and did it all with lights?


29_30.ee.stadium.ga.indd 29 25/10/2012 16:32



Home to both Canadian football league team, the BC Lions and major league soccer team, the Vancouver Whitecaps FC, Vancouvers BC Place Stadium is one of Canadas premier venues and an exceptionally busy place too. In addition to the sporting giants who perform there on a regular basis, it has hosted appearances by iconic figures including Pope John Paul II, Madonna, Michael Jackson and, of course, the cream of the worlds athletes during the Winter Olympics.

Following a major upgrade, BC Place has become a landmark on Vancouvers skyline and a place of pride for all British Columbians, due in no small part to the new lighting system, which not only adds to the stadium architecturally, but also allows BC Place to come alive for events, both from the inside and out. Whats running the show? Controlling this new and sophisticated, integrated lighting system, which utilises energy-efficient LED fixtures from Lumenpulse, is a Pharos LPC 60, programmed with Pharos Designer software, specifically chosen to enable displays of a vast array of static or moving colour designs to be shown on both the outside surfaces of the stadium, and on the inside. More than nine acres of roof, clear faade panels on the sides of the building and roof support masts provide an incredible canvas for displays of both static and dynamic lighting, with more than 26,000 individual programmable lighting elements.

As a stadium with two home teams, BC Place needed to be made to feel it belonged to both, so part of the brief for lighting designer, C M Kling & Associates was to create a way to completely transform the building, depending on which team was playing. The solution? Different colours and sequenced lighting now create identifiable signature scenes for each team when theyre in residence.

Other features include special light shows of gradually moving, abstracted, colour-changing content on the faade that is set in tandem with fixed roof colours. These shows are scheduled before and during the games, and are paced so as not to distract either the audience or the players.

When a team scores, a series of dynamic, fast-paced sequences are triggered, some of which also interact with the audience as they participate in activities, such as the wave.

Getting down to details Jim Anderson, Lumenpulses director of application engineering, commented on a specific area that he felt simplified the entire project: For my part, the power of the Pharos LPC, the ease of specification, installation, set up and programming, as well as the customer support throughout the project, are what made the difference. With 51 universes and 216 separate Art-Net nodes, we needed the horsepower of the LPC 60. During my testing, it was easy to map and create impressive effects quickly.

Steve Bedford at EOS Lightmedia, who is responsible for programming the light shows, agreed, adding: The LPC 60 gave me a stable and reliable platform from which to realise this large scale, high profile project. The LED installation at BC Place is unique, in that the light shows and effects are simultaneously visible from the interior and exterior. The final installation is both a scripted part of the ticketed experience, and a high profile architectural installation. The flexible interface and control options allow fine-tuned cues to be executed by lighting consoles for big budget half-time shows, and by score-keepers for touchdowns and crowd messages, while allowing building systems to handle the necessary architectural commands and astronomical automation.

The interface has enabled me to manage and create unique content to effectively brand the stadium, the two professional sports franchises that call the stadium home, as well as the events and trade shows. The team provided brilliant and effective troubleshooting and support, particularly given that this project used a new LED product: everyone was extremely quick and effective in providing support for integrating the system.

BC Place is illuminated from 5.30am to sunrise and from sunset to 10pm most nights. On event nights, the roof and Northern Lights display are lit until the conclusion of the event. BC Place Management have found that they can even utilise the lighting to bring awareness to events, charities and special causes that are important to all of the communities across British Columbia, by offering special lighting for dedicated charitable events and recognised causes.

All in all, it sounds like a win-win situation.

FACTS AND FIGURES

Daily lighting up time 5.30am to sunrise sunset to 10pm Size of exterior canvas 9 acres Programmable elements 26,000 Number of home teams 2 Art-Net nodes/universes 216/51

CONTACTBC Place Stadium www.bcplacestadium.com CM Kling www.cmkling.com Lumenpulse www.lumenpulse.com EOS Lightmedia www.eoslightmedia.com Pharos Architectural Controls www.pharoscontrols.com


29_30.ee.stadium.ga.indd 30 31/10/2012 10:46

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At last a real LED alternative to 400W high-baysOREGON is NVCs range of high-efficiency fittings for industrial and warehouse applications. These are available with a wealth of sensor and dimming options and are a popular and energy saving replacement for old metal-halide and SON high-bays and low-bays. Where a typical high-bay or low-bay delivers just 30-35 luminaire lumens per circuit watt, a fluorescent OREGON delivers more than 70. NVC has now launched 3 new LED additions to the OREGON range, giving outputs of up to 24,000 lumens, equivalent to a 400W metal halide high-bay. With an efficacy of 105 luminaire lumens per circuit watt, these LED fittings are at least 3-times as efficient as the old fittings they replace.

I Light01923 495496 | www.ilight.co.uk/eg2

Smart apps and Ethernet Gateway deliver new levels of hand held lighting control for iLightCooper Controls has introduced new Ethernet Gateway devices alongside a range of smart phone applications for use with both wired and wireless network devices. Users can now select and operate lighting scenes, modify and save changes and even password protect areas from unauthorised access using a handheld device. The same access is also available from any PC connected to the EG2 allowing users to make selections and changes via a built in web server. Ethernet Gateway and iLight Remote iPhone apps bring simple intuitive lighting control to both commercial and residential users alike.

Kingfisher Lighting01623 415900www.kingfisherlighting.com

Kingfisher Exterior Lighting have released Aludra, their brand new stylish floodlight. A high specification, low profile die-cast flood, available with a wide choice of lamp and gear packages including energy-saving, long life 45w and 90w CosmoPolis and 18w, 30w and 60w LED. A quick release tool-less catch, cuts installation and maintenance time. Sealed to IP65, Aludra has a ULOR of

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C O M M E R C I A L L I G H T I N G

news

ON TOP OF THE WORLD

ONWARDS AND UPWARDSInlico, the supplier of components to the lighting industry is moving to bigger premises. Managing director, Tom Doneghan commented on the move: The increase in sales that we have experienced over recent years means that we have outgrown our old place. Our new offices and warehouse will cater for future expansion with plenty of room for the new products we have planned. The companys new home will be at 26-36 Frankfort Street, Newtown, Birmingham, B19 2YH.

The new Danish research test centre for large wind turbines, located in sterild is signaled using Obelux LED high-intensity aviation obstruction lights. The test centre comprises seven wind turbines up to 250m in height and two 250m-high light masts, equipped with Obelux LED high-intensity lights.The national wind test site was established by the Institute of Wind Energy, a vitally important reseach establishment for consolidating and expanding Denmarks position within the wind energy sector. The light masts and LED lighting systems were erected and installed by YIT A/S. Obelux LED obstruction lights were chosen due to their extremely long, maintenance-free life, cited Niels Riis. LED lights will save us a lot of unplanned site visits compared to conventional light sources, and thus, decrease the total cost of ownership.

Since the masts are 250m high, the lights will be installed on three levels: 83m, 167m and 250m above ground level. On each level there will be three 120 beam light heads which cover the full 360, as required by International Civil Aviation Organization (ICAO). During the day, the flashing white light effective intensity is 200,000 cd and it delivers a total of 120,000 lumens. At night, the light is reduced to 2,000 cd, and twilight mode will give 20,000 cd.

Safety firstThe Oslon Black Flat from Osram Opto Semiconductors has been designed specifically for automotive frontlighting systems.

Equipped with state-of-the-art chip and packaging technology, and a ceramic converter, it offers high light output even at high currents, uniform distribution of light, thermal stability and particularly good contrast for seeing and being seen.

Light sources for frontlighting have to be multi-talented. Not only do they have to illuminate the road

ahead reliably in rain and fog and at night, they have to perform various functions as low beam, cornering lights and fog lights for example. At the same time, they have to withstand high temperatures in the headlights. For these reasons, more and more automobile manufacturers are opting for flexible, efficient and powerful LED technology. Oslon Black Flat is the latest addition by Osram Opto Semiconductors to its Oslon Black series and has been designed to

meet all these requirements.

The new LED contains a UX:3 chip that delivers high light output even at high currents. With a power draw of 2.3 W and an operating current of 700 mA, the Oslon Black Flat achieves a typical luminous flux of 200 lm (at 25C). If operated at 1.2 A it can achieve up to 270 lumen despite an application temperature of 100C in the chip.

A chance to shineLIA Student Lighting Design finalist, Simon Locke-Wheaton has joined tp24 as a graduate trainee designer.

Locke-Wheaton studied 3D-Product Design at Plymouth University and submitted his LED wall design, Pop On Lights for this years final judging, where Shaun Davis, MD of tp24 saw it.

For more than a decade, tp24 has been supplying of low energy lighting solutions to the domestic market, and for the past two years it has run a short programme for graduates, each year taking on one product designer, one graphic designer and one PR assistant.

Simon displayed a huge interest in lighting, and I think his design was actually the best in terms of a design for lighting. He had worked on the light source and had given a lot of thought to the manufacture and it flexibility, commented Davis.

Working for tp24 will give Simon a good view of the realities of product design and enable him to get into his chosen field by having experience in a full time role. Currently he is working with the tp24 design team on some new generation of light fittings for release later this year, he said.

37.comnews.ga.indd 37 24/10/2012 11:50

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Lighting the worlds cities is something of an art form not least the bridges that create some of the most evocative images of those cities

Gone are the days when a few street lamps would do. The bridges that span some of the worlds busiest waterways are being given a facelift by lighting designers determined to make sure they look as good by night as they do by day.

In Tampa, Florida, five landmark bridges spanning the Hillsborough River have been illuminated as part of the Lights on Tampa arts initiative. The project, entitled Agua Luces (or Water Lights) is a joint public and private partnership between the Citys Arts Division and Friends of Tampa Public Art.

A number of years in the planning, Agua Luces complements The Tampa Riverwalk expansion, a paved walkway on the eastern side of the river that highlights specific vistas of the city, river and newly-lit bridges.

In charge of designing the lighting aspect of Agua Luces was Tracey Dear of Chicago-based Dear Productions. Well known for illuminating Chicagos bridges, Dear specified outdoor-rated Iluminarc fixtures fitted with LEDs in his design, in order to allow the colours to be changed throughout the hours of darkness. The water plays such a large role in Tampas appearance, explained Dear. My first impression was how beautiful the city looked from the water. I have never underestimated the appeal of water to the human psyche. Add the element of light and you have a powerful mix.

Five down The goal of the project is to light all nine city bridges by 2014. The five ticked off to date are Platt Street Bridge, Brorein Street Bridge, Tampa-Hillsborough Expressway Authority overpass, Kennedy Boulevard Bridge, and the CSX Railroad Bridge.

Each bridge is unique, and I wanted to give them their own personality, while unifying them as one family of bridges surrounding downtown Tampa, said Dear. Much like currents of water, the bridges will constantly change colour and appearance. This magic of changing light reflects in the Hillsborough River, adding to the overall view of the city.

Four of the five bridges utilise Iluminarc Ilumipanel 40 IP exterior lighting solutions. The fifth - Tampa-Hillsborough Expressway Authority overpass - uses Ilumipanel 90

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together with six Ilumiline 36 IP linear wash lights. All five bridges have been lit to create colourful archways for the active waterway, and add dramatic flair to the citys skyline.

The Ilumipanel 40 is a bright little fixture with a manageable design thats not alien to electrical contractors, cited Dear. It has really great output with a slim design, and blends in to the environment well. I really like it and will use it again.

Eastern promiseArup has gained a worldwide reputation for its stunning projects, not least the Sheikh Zayed bridge in Abu Dhabi. Associate and lighting designer, Simone Collon discussed the technical challenges: The main technical challenge was ensuring that the lighting fixtures, which were positioned in the water and at other positions around the bridge, remained invisible to the human eye, while illuminating the bridge continuously.

The incredibly hot climate (up to 40 degrees in the summer) was also a major consideration when deciding on what fixtures to use - the design team went for very resilient products from Danish lighting manufacturer, Martin which would handle this heat. However, first and most importantly, Arups lighting designers follow a creative approach in developing a lighting concept.

The choice of fixtures and control system was primarily driven by design and includes: 204 x Martin exterior 600; 130 x Martin exterior 200; 956 x Martin Cyclo 01 The control system utilised a Martin Maxxyz; 12 x Martin Ether2DMX; 9 x Martin RS-485 Optosplitter; and 10 x XLNT Etherswitch. For the roadway lighting on top of the bridge, Philips MVF607, MVP506 and Mastercolour lamps were selected.

The control system was specified in order to animate the lighting. Collon explained: The structural silhouette shape, the so-called spine of the bridge, is highlighted by dynamic coloured light, while the underside of the road deck features integrated monochrome dynamic cell lighting. A control system allows for animated flow movements in the spine and the cells, resulting in fluid patterns of light travelling along the bridge.

The scenarios comprise dynamic coloured light that flows across the channel, creating an embracing landscape of colors for the users of the bridge and a scenic feature for distant viewers.

The lighting was designed by Arup to reflect the culture of Abu Dhabi and the UAE a specially developed language of light creates a landscape of colour to flow across the bridge as a symbol for the prosperity and ambition of Abu Dhabi, while celebrating religious traditions, festivities and public events. For example, with the new moon, the bridge lighting links with the appearance of the Grand Mosque. Once a month, both iconic pieces of architecture appear tinted in deep blue colours, creating awareness of urban connectivity.

The strong, simple concept of this lighting design required both feature and road lighting to be perfectly balanced, focused, shielded, and programmed. The 13-year design process began with testing lights in a physical model of the bridge, followed by a rigorous process of design verification and refinement, including colour tests, calculations via computer model with photometrical accurate files and with a full-scale mock-up comparing fixtures and bespoke lenses.

Below: Arups lighting design for the Sheikh Zayed Bridge. Bottom: Westfield

Stratford Bridge lit by Pinniger

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CONTACTIlluminarc www.illuminarc.com Dear Productions www.dearproductions.comArup www.arup.comMartin Professional www.martin.comPinniger www.pinniger.co.ukKnight Architects www.knightarchitects.co.uk Philips www.lighting.philips.co.ukStage Electrics www.stage-electrics.co.ukArchitainment www.architainment.co.uk

decided that the time had arrived to update the existing lighting system it was an ideal opportunity to put forward Philips ColorReachT. Its the first LED architectural floodlight which is powerful enough to illuminate large-scale structures, having more lumen output than any other comparable fixture for exterior illumination.

ColorReachT offers exceptional light projection - up to 5,000 lumens over 500ft - providing colour-mixing effects through both static and dynamic colour-changing sequences. The modules also offered an energy saving opportunity, operating at 290W at full output compared to the 700W traditional floodlights they replaced.

Projecting skywardsTo create the stunning effects, eight RGB LED ColorReachT Powercore luminaires were installed, each incorporating a flexible selection of beam angles allowing differing combinations of dynamic displays to be produced. These were run via a DMX controller using astronomically triggered timelines. For special events, the potential exists to use one beam on the modules lower half to bathe the vertical plane with colour at deck level, while utilising a different beam angle to project a contrasting or complementary colour hundreds of feet up at the top of the arch. In addition, two remote touch screens have been installed to allow bridge staff to take manual control of the system for last-minute special requests or specific colour requirements. It has been programmed to run without intervention, starting at sunset and running through until 1am.

Joined up thinkingCloser to home, the recent Olympic regeneration project for East London included installing the Stratford Link bridge, which links the station to Westfield Shopping Centre. Many thousands of visitors to the Park utilised the footbridge during the Games, and it was decided to provide a vibrant journey for those visitors with the use of light.

Pinniger Lighting Consultants created a lighting design for the bridge, designed by Knight Architects and Buro Happold. The 130m bridge features a broad 12m wide deck and glazed five metre high sides, providing a secure, transparent enclosure. The bridge is gently curved in plan and the inner chord of the truss is warped so that it is inclined to 15 degrees at mid-span. This creates a dynamic sense of movement and increases the view of the sky where the truss is tallest.

The lighting design objectives were to create an overall visitor experience, adding to the bridges sophisticated, urban appearance, while maintaining excellent levels of safety and security. Of particular importance was the need

to balance a range of adjoining lighting installations, including Stratford Station and Westfield Stratford City itself.

Lighting is provided from within each of the vertical mullions. The lit effect gives homogenous light on both sides of the bridge, accentuating and enhancing the architectural form, while creating an interesting and visually comfortable lit environment.

Each lightbox is divided into three lit compartments. Cool white LED profiles are located in the main body of the light box, providing general ambient lighting to the footpath. This is supplemented by the bottom-lit element, which has a combination of linear LED profiles to maintain the homogenous effect, along with LED projectors, providing a localised pool of blue light to the bridge deck. The simple, rhythmic light created by the vertical white luminaires adds to the sense of movement. The top compartment contains blue LED profiles to soften the brighter white light against the night sky.

Moving lights A first for the North East, Gatesheads Millennium tilting bridge was a world first, so when the local authority decided it was time for an upgrade to the lighting, it made sense to utilise a revolutionary development in LED technology.

The bridge now features colour mixing effect LED projectors, which complement the striking, white arched structure and create vibrant illumination through both static coloured illumination and dynamic colour changing sequences. Stage Electrics worked in partnership with Architainment and Philips Lighting to bring the project to fruition. Craig Grieveson of Stage Electrics commented: When Gateshead Council

Much like currents of water, the bridges will constantly change colour and appearance. This magic of changing light reflects in the Hillsborough River, adding to the overall view of the city

Above: Philips lit the Millenium Bridge,

Gateshead. Right: Iluminarcs colourful work for

Lights on Tampa

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A D V E RT I S E M E N T F E AT U R E

P U L S A R C A S E S T U D Y: SAVA BRIDGE

Based in the heart of Cambridge UK, Pulsar develops and manufactures LED lighting and lighting control solutions for professional entertainment and architectural installations around the world

The bridge on Ada Island spans the River Sava in Belgrade, Serbia, crossing the tip of Ada Ciganlija and connecting the municipalities of Ukarica and Novi Beograd. Not only is it a landmark architectural structure and one of the longest single-pylon, asymmetric, cable-stayed bridges in the world, but it also provides increased network capacity for the areas transportation infrastructure.

After nearly five years of construction, the bridge officially opened on the first of the year 2012, boasting 2,256 LED fixtures, including 30 Pulsar TriColour RGB LED ChromaFlood200s for the illumination of inner pylon and tip, and 1032 Pulsar 1.8m TriColour LED ChromaStrip25s for the underside of the carriageway.

Gulf Line International Trading Co., a Dubai-based full service provider of indoor, outdoor and custom-made light fittings for commercial and hospitality projects, worked together with manufacturers and sub-contractors to design, supply, supervise, and install all of the decorative lighting.

Although the construction of the bridge began years ago, the installation of the lighting only began towards the end of November 2011. Gulf Line supervised all aspects of the installation of the decorative lighting and even carried out parts of the installation. Additionally, it managed teams from the different manufacturers involved: Pulsar Light (UK), Musco Lighting (US), Planet Lighting (Australia), as well as sub-contractor, DC Energocoop (Serbia).

The clients initial request was to illuminate the tip and faces of the 200m tall pylon (both inner and outer surfaces) along with the 80 stay cables supporting the bridge connected to the pylon, the underside of the carriageway and the bicycle/foot paths along the bridges sides, explained Gulf Line assistant project director, Igor Djordjevic. The unique solution offered by Gulf Line used only LED fixtures, as requested by the client, to illuminate all parts of the bridge, and in total, more than 2,256 LED fixtures were used. Gulf Lines proposal utilised fixtures from several manufacturers around the world, specialising in different aspects of the project. Using this knowledge, and the fact that Pulsar focuses primarily on RGB LEDs and has a reputation as being amongst the best companies for dynamic colour changing LED fixtures, Gulf Line detailed the

request of the client, and together with Pulsar, came up with the most effective solutions both price- and design-wise.

Pulsars ChromaFlood200s were chosen specifically for the illumination of inner pylon and tip due to the clients request for the inner faces of the pylon to be illuminated in a range of colors instead of just white. Additionally, the Pulsar ChromaStrip25s were specd for the illumination of the underside of the carriageway because the client requested a linear strip that would span the length of the bridge and be bright enough to be visible from a distance. The ChromaStrips fitted not only the brief, but also the limited installation space under the carriageway.

The Pulsar products detailed above met all of the requirements and the client was more than satisfied with the results, Djordjevic concludes. Pulsar offers a high quality range of products with a very high level of service to go with them. It is focused on colour controllable LED fixtures, and offers a very up-to-date set of products, which is extremely important when dealing with the ever changing LED technology.

Because of the complexity of the project, everything was designed well in advance and so all came together without a hitch during the installation process. However, there were a few interesting after effects of the installation to note says Djordjevic: The cone-shaped tip of the pylon is made of stainless steel; it is a bit of an unconventional surface to illuminate as it acts like a mirror, reflecting most of the light away. The end result was an interesting and slightly unusual reflection where a single line is seen in the middle of the tip going vertically upwards and erupting into a bouquet of light, giving an almost exploding firework effect. And while there is nothing unusual about the way the ChromaStrips were used on the underside of the carriageway, the fixtures themselves formed a magnificent reflection, which stretched across the river Savas surface.

Both Pulsar and Gulf Line believe that this might be the longest continuous LED line in the world.

FURTHER INFORMATIONWeb: www.pulsarlight.com Video: www.youtube.com/watch? v=Q1RkCUH47LsLinks: www.gulfline.ae/

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Collingwood Lighting01604 495151 collingwoodlighting.com

Simple TouchCollingwood Lighting has added the DMXT to its range of Led colour changing controllers. This wall mounted touch screen controller could not be any easier, simply touch the colour wheel, watch the LED change colour and create the atmosphere you wish. Featuring 8 functions including on/off, dimming and capable of storing 6 preset colours, the DMXT is a great addition to Collingwoods already impressive range of colour changing products. Now the colour of your lighting can match or lift your mood. Its your choice at a simple touch.

Focus SB01424 858060 www.focus-sb.co.uk

More than just your imaginationTo meet the demands of designers and specifiers, Focus SB has launched an app for Google Android and Apples iPhone that enables users to find a lighting plate to perfectly match the dcor of any room in a home, hotel or office. Designed and developed by Bite CP, a bespoke product in place mobile app (Room View Focus sb) has been created, best described as a digital swatch book of light switch products. The user can scroll through products and see them in situ by taking a photo of the decor using their camera phone/iPad/tablet and overlaying the range for a realistic impression, which can then be saved for future reference. The app also has direct contact links to Focus SB for any queries or further information. Roger Kemp, Managing Director of Focus SB, says there has already been significant interest in the app: A number of designers that we consulted during testing have been very impressed, he says. The app makes it easier for clients to make an informed choice on the product range and finish and is easy to use. The free app is available through iTunes and through Googles Android App World. www.focus-sb.co.uk

ML Accessories01582 887760 www.mlaccessories.co.uk

ML Accessories are delighted and proud to announce the latest addition to its popular Knightsbridge range of Lighting and Wiring accessories with the launch of the FireKnight collection of LED Fire rated recessed luminaires. The new series is IP65 rated as standard, complete with 7W Hi-powered SHARP COB LED technology. Fitted with a white Bezel as standard, the range offers an optional 4 additional interchangeable colour bezels to choose from. Cool and warm white colour temperatures are available, allowing the Fireknight range to be used both for domestic and commercial applications. The range (patent pending) uses the latest in COB LED and reflector technology, enabling the luminaires when fitted, to look and feel like a standard halogen reflector lamp. Its high lumens per circuit watts and energy efficiency make it a real substitute for both new builds and when replacing halogen down lighters. The range is also fully dimmable (with most leading/trailing edge dimmers) and comes with a 7 years warranty (conditions apply). This latest innovative product range comes as a further boost for a co

Total Lighting November 2012

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Transcript of Total Lighting November 2012