LEGACIES OF LIFE. Without consideration of usage and environmental variables, it is impossible to predict the life of a product with certainty. Only clearer metrics can help unshroud the mystery.
AT THE FRONT The ascending LED star has altered the way exteriors are showcased, accented, and integrated into the surrounding environment.
SSL BUZZ U.S. Dept. of Energy releases third report in its comprehensive life-cycle analysis comparison between LED, CFL and incandescent.
SSL PROJECTS London’s Historic Burlington arcade receives a well thought out LED update that allows the original architecture to shine once again.
NUMBER 28 • MAY 2013 www.architecturalssl.com
CAN YOU PREDICT PRODUCT LIFECYCLE?
Regardless of efforts to set monolithic standards to measure the end of life for SSL products, a convoluted mix of variables makes it difﬁcult to predict service “life” conﬁdently.
ARCHITECTURAL SSL • 519 BRIARCLIFF ROAD, BOLINGBROOK, IL 60440
ARCHITECTURAL SSL • Chronicling the Advancement of LEDs in the Built Environment
SSL Proﬁle: Carmes District, Namur, Belgium.
SSL Proﬁle: Helix Architecture+Design, Kansas City.
White Pages: Advanced Plastics Foster New Designs.
11 In Brief: Pasadena continues its use of LED technology, this time in retroﬁtting street lamps. 35 Project Proﬁle: Helix’ LED ofﬁce retroﬁt.
07 Life-Cycle Assesment
05 LED Insights
The latest CALiPER report examines the impact materials within LED ﬁxtures might have on landﬁlls.
Lightfair wows our editor with great leaps in cost and controls. But the reality of inexperience remains a big barrier. By Jim Crockett
09 Throw the Book at LED SSL at its creative height, a new illuminated “book” gives new legs to mobile lighting.
10 Totally Tubular Philips has developed an interesting tubular LED form.
02 • 05.13 • ARCHITECTURAL SSL
48 SSL Observed
“Just as a smart phone is more complex than a rotary phone, SSL is a technology demanding greater attention to detail to accurately predict a product’s useful end.” —Kevin Willmorth
SSL is hitting some signiﬁcant performance milestones, with some LED die breaching the 270 lm./watt barrier. Even if the lab efﬁcacies are removed, the results are still impressive. By Kevin Willmorth
DESIGN & PRODUCTS
12 Market Setting Feature: Reconsidering L70
38 White Pages New developments in thermal and optical technology are further helping SSL advance; manufacturers are lowering SSL costs with lower-power arrays.
Regardless of efforts to set monolithic standards to measure the end of life for SSL products, a convoluted mix of variables makes it difﬁcult to predict service “life” conﬁdently. by Kevin Willmorth
18 At The Front: SSL’s Exterior Evolution Since the world turned the corner into the 21st century, the lumen output, color rendering accuracy and life span of LED appears to be approaching mach-speed. Lighting design, too, is broaching new ground. by Vilma Barr
42 Advances OLED, drivers, modules, heat sinks, replacement sources, architectural ﬂoods, bollards, area lighting, decorative sconces.
Architectural SSL, Vol. 7, No. 3 (ISSN# 1941-8388) is published ﬁve times per year by Construction Business Media. Publication Office: Construction Business Media, 579 First Bank Drive, Suite 220, Palatine, IL 60067; 847 359 6493; www.architecturalssl.com. (Copyright © 2013 by Construction Business Media) POSTMASTER: Send address changes to Architectural SSL Magazine, 519 East Briarcliff Road, Bolingbrook, IL 60440.
24 Featured Project: Burlington Arcade, London Once the shopping center of Victorian London’s elite, the mall remains a retail mainstay, but thanks to well thought out applications of SSL technology by Speirs + Major, the structure’s original architecture shines once again.
ARCHITECTURAL SSL • 05.13 • 03
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
NUMBER 28 • MAY 2013 www.architecturalssl.com
Managing Partner Director Publishing Operations firstname.lastname@example.org
Managing Partner Director Business Development email@example.com
Mind the Gap… er, Carry On…
Vice President Director, Art & Production firstname.lastname@example.org
In a clever marketing twist, module maker Xicato urged the community at Lightfair to ‘Stay calm and be Consistent.’ But I urge all to heed the original Brit phrase, and carry on.
One interesting thing I learned at Lighfair was
EDITORIAL Jim Crockett 847 359 6493 Kevin Willmorth
Megan Mazzocco 847 359 6493
Editorial Director email@example.com
friend of SSL, the program gives college students hands-on experience in designing well-lit LED spaces. But one of the things that jumped out at incident the lighting designer experienced on a
Call it waiting for the muse to strike, or simply
recent university project. Derry noted she sent
procrastination, but until a pair of press releases
out an LED design for bid at roughly $600,000,
gave me inspiration, I struggled with this month’s
feeling she included some padding, but was
column. The plan was to recap Lightfair—as boy,
shocked to have the bids come back at twice that
did I see plenty of good stuff—but it was just too
figure. The contractor told university officials
much to expound on in a limited space. So it was
they could probably come in near the budget, but
kismet when these two items hit my inbox almost
they’d have to use traditional tech to deliver the
simultaneously. The first release was from the
goods. Derry stood her ground, went through the
National Lighting Bureau (NLB) promoting end-
pricing exercise, and said the original number
users to check out the organization’s updated
should stand. Unfortunately, this battle between
database of lighting designers. The release
visionary lighting designer and traditionally
argued that users should always try to engage
entrenched contractor is still part of the reason
Associate Art Director firstname.lastname@example.org
a professional designer, as a quality lighting
why SSL’s “tunnels” remain only 50% complete.
scheme—according to the organization—not only
Even though the tech may be close to being ready
Graphic Designer email@example.com
would result in significant energy savings, but
for prime-time, not everybody else is—or wants
could also lead to increases in employee produc-
to be. I’m sure the contractor padded his quote
tivity. Such a boost, said NLB, could translate into
based on an expected learning curve, as well as a
major dollars, as much as $400 per employee. The
lack of a relationship with some of the manufac-
second release was from ETC about a new line of
turers listed in the spec. I also foresee challenges
heavy-duty RGB architectural floods which hap-
on the approval process side in selling local AHJs
pened to include a photo of the installer whipping
not quite sold on the safety of low-voltage prod-
this puppy into place with just two cables.
ucts. The bottom line, a lot of education remains. I
Associate Editor firstname.lastname@example.org
DESIGN & PRODUCTION Dave Pape Art Director email@example.com Lauren Lenkowski
sity. As the brainchild of Derry Berrigan, an old
me during her press conference was a pricing
CONTRIBUTING EDITORS Vilma Barr firstname.lastname@example.org Barbara Horwitz-Bennett email@example.com Ellen Lampert-Greaux firstname.lastname@example.org Chuck Ross email@example.com Jan Bottiglieri
about a novel program called Light Think Univer-
ADVERTISING SALES Gary Redmond 847 359 6493 firstname.lastname@example.org
Tim Shea 847 359 6493 email@example.com
Trey Higgens 847 577 8980 firstname.lastname@example.org
Jim Oestmann 847 838 0500 email@example.com
OK, what’s the point? In past columns, I’ve
applaud companies like ETC for making installa-
David Haggett Ted Rzempoluch 847 934 9123 609 361 1733 firstname.lastname@example.org email@example.com
referenced the 50% tunnel gag from an old Mr.
tion easier. And as I noted, many manufacturers
Peabody cartoon, which happened to be about a
have made great strides in making controls much
race between a horse and a prototype locomotive.
more simple and intuitive, as well as instituting
Jim Führer 503 679 5409 firstname.lastname@example.org
Hilarity ensues when the seemingly victorious
measures to help bring costs down. But unless
train crashes because a bridge is not complete.
most owners buy into NLB’s productivity num-
It happens a second time in a tunnel with effects
bers, there remains a major gap to mind in board-
something like this #$%@*&!!. Here’s the corol-
ing the SSL train. So stay calm and carry on.•
Bob Fox 203 356 9694 email@example.com
SUBSCRIPTION INQUIRIES There is no charge for subscriptions to qualified requestors in the U.S. All other annual subscriptions will be charged $39 for standard delivery or $55 for air mail delivery. For subscriptions, inquiries or address changes, call 630 739 0900 ext. 201.
lary: there’s a lot of SSL infrastructure work still to do. But in making the rounds at Lightfair, it seemed to me the gap wasn’t so impossible as manufacturers appeared to have made tremendous advances in addressing these “infrastruc-
A Publication of Construction Business Media
ture” issues, particularly on the controls and dimmability side. That said, the guy in the photo
still presents a significant barrier. Let me explain:
Jim Crockett, editorial director
ARCHITECTURAL SSL • 05.13 • 05
Rethink commercial … Rethink Juno Lighting Group
Rethink Juno Lighting Group for hospitals, universities, ofﬁce buildings and your next commercial project. Remember when Juno Lighting Group was the leader in residential LED lighting? Well times have changed, and for the better. Now Juno Lighting Group is the leader in residential and commercial LED lighting. With the addition of our line of Indy™ LED troffers, and AccuLite™ LED area lights, you can assemble complete, energy-saving lighting packages from Juno Lighting Group and take advantage of the industry’s most innovative and advanced LED technology … in every ﬁxture across every project. For hospitals, hotels, schools and universities, ofﬁce buildings and other commercial facilities – as well as residential projects – no one matches the line of LED lighting products you get from Juno Lighting Group. Recessed ﬁxtures, track systems, outdoor lighting, troffers and more; when it comes to LED, Juno Lighting Group has it all. Learn more about our commercial LED lighting today. You’ll never think the same way about Juno Lighting Group again.
Sign up at junolightinggroup.com/LED2013 for a chance to win an Apple® iPod touch® and to learn more about Juno Lighting Group Commercial LED lighting. Circle 03
Shine On. www.junolightinggroup.com
DOE Life-Cycle Assessment, Part 3 LLE LED ED ED LIF LLIFETIME IFE FET ETIM TIM IME ME AN A AND ND ND LIFE-CYCLE L LIF IF IFE FE-C E-C -CY CYC YC CL LE IMPACT LE IMPA IM MPA PAC AC CT T STUDIED S ST TUD TU UDIE DIE IED ED IN N NE N NEW EW EW DOE D DO O OE E RE R REPORT EPO EP POR ORT RT
Life-Cycle Impacts Relative to CFL Current and projected LED benchmarks
AI-01: Global Warming AI-02: Acidiﬁcation AI-03: Photochemical Oxidation AI-04: Stratospheric Ozone Depletion AI-05: Human Toxicity
The U.S. Dept. of Energy has released the third
WI-01: Freshwater Aquatic Ecotoxicity WI-02: Marine Aquatic Ecotoxicity WI-03: Eutrophication
report in its comprehensive life-cycle analysis
SI-01: Land Use SI-02: Ecosystem Damage SI-03: Terrestrial Ecotoxicity
impacts of these three lighting technologies.
comparison between LED, CFL and incandescent lamps, this one focused on the environmental Researchers performed chemical analyses on 22 lamp samples (representing 11 models) to see if
RI-01: Abiotic Resource Depletion RI-02: Non-Hazardous Waste Landﬁll RI-03: Radioactive Waste Landﬁll RI-04: Hazardous Waste Landﬁll
any of 17 speciﬁed elements were present in levels that exceeded California or federal hazardous waste standards. The testing wasn’t intended to provide infor-
Current CFL Benchmarks
Current LED Benchmarks (2012)
Predicted LED Benchmarks (2017)
mation on how safe the varying products were to operate—just to judge how hazardous they might be to dispose. The three key ﬁndings include:
ABOVE: The diagram reﬂects the potential impact LED products (2012 products in blue) might have in a landﬁll if thrown away. LED impact levels exceeded CFL slightly in one category—hazardous waste—in the form of aluminum. The positive is that much of the aluminum, from the heat sinks, will likely be salvaged or recycled.
Z The tested models were generally found to
fall below thresholds for federally regulated elements—though the volatile mercury in the CFLs is presumed to have escaped detection. Z Nearly all the lamps exceeded at least one
Comparison with LIM (2012) LED
California threshold, typically for copper, zinc, antimony or nickel. Z Metal screw bases, drivers, ballasts and wires
or ﬁlaments contributed the most to hazardous
Liμ (2012) L±μP
waste issues—internal LED light sources generally didn’t cause problems for LED lamps. This report follows on previous research looking at life-cycle energy consumption and
manufacturing processes among these three
lamp technologies. In both previous efforts,
their shorter lifespan meant multiple replace-
ments to produce a similar amount of light, over
time, compared to the other technologies.
incandescents had the biggest environmental impact, because their energy use per lumen signiﬁcantly exceeded LEDs and CFLs and because
Although LEDs have longer lifespans than even CFLs, fewer likely will be thrown away over time, but their anticipated penetration into
ABOVE: DOE tested levels of hazardous chemicals in a number of LED products, expressed as a percentage of the federal TTLC—total threshold limit concentration—and then compared that to similar testing done by LIM. Copper, typically from elements in the driver, was found that have exceeded the federal TTLC for the element.
ABOVE: The 10-element overlap between the DOE and LIM studies found a number of useful comparisons—most notably that, with minor exceptions, the lamps in the LIM study fell within the range of lamps in the DOE study.
multiple lighting markets means LEDs could still
CONTINUED ON PAGE 08
ARCHITECTURAL SSL • 05.13 • 07
CONTINUED FROM PAGE 07
have h hav ave ve an an im impact mpact in n the th he en nation’s atio tion’s n’s sw waste aste es stream tre trrea am o once nce tthey hey beg b begin egin e in n ending en nding in ng gu up p in n lan la landﬁ an ndﬁ ﬁlls. lls. A number numbe mber berr off test tes tte estt methods met eth tho hod ods ds s and an and regulations regulat la atio ion ons ns have h hav ave ave eb been een nd developed evelop lo ope ped ed d att st sta state tat ate e and an nd d fed fe ffederal ede der era al lev le levels eve vel els s to o ide id identify den ent ntif tify fy y pot po p potenote ten enn ttially ial ia ally ly y hazardous haz ha haza zar ard rdo dou ous us waste waste e to o ensure ensur su ure re e proper pro rop ope per err treatment. tre tr trea atmen me ent nt.. California Califo lifor orn rni nia a is is notable n ota tab abl ble e in in having ha hav avi vin ng developed develo dev velop ope ped ed d regulations regu eg gul ula ation io ons ns s that tha th that at are are more more stringent str tri rin ngent tthan tha han han n those tth tho hos ose e at at the tth he e federal ffed fe deral level, le lev vel, modeled vel, modeled le ed d after afte aft af er the the European E Eur uro u opean Union’s U Un nio ion on’s n’s RoHS R RoH oHS oHS S Directive. Direc Dire ect ctiv ive ve. e. Under Unde Und nder err these the th thes ese se guidelines, gui gu guid deli lin nes, new new w products—rather prod pro r duc duct u ts— —rath atthe her er than tha th han an nw waste—are aste—are ttested. este sted. For For or this thi this th s installment ins in nst sta tall allm lm men ent ntt of of the th he e continuing con ont nti tin nuin ing ng g life-cycle life lifee-c -cy ycle e analysis ana an anal aly ysis s of of LEDs, LE LEDs, DOE DOE OE commissioned comm mmiss is ssio ion one ned ed d two tw wo independent independent labs lab la abs bs s to to perform perf errfo forrm both both otth h current curr rre ren ent nt EPA E PA tests tests s and and the the more more e stringent stri trrin ngent California Califo lifor orn rni nia a tests tests stts s on on the the selected selec le ect cte ed iincandescent, ncandesce cen ent nt, t, CFL CFL and and an d LED LED products. pro rod odu duc uct cts s. The The procedures procedures pro re es s involved inv in nvo vol olv ved disassembling d isa is sas ass sse embl mblin b ing ng g the th he lamps, lam la am mps, identifying ide id den ent ntif ify fyin ing ng g potentially poten te ent nti tia ally lly toxic toxic c elements ele el e em men ent ents ts within w with itthi hin n iindividual ndivi iv vid dual c components ompo mpon pone nen ent nts s ((17 17 e elements lem le em ments wer w were ere e e iidentiﬁ denti tiﬁ ﬁe ﬁed ed d for fo f r iinvestigation) nvesti sttig gatio tion) n) a and nd the nd th tthen hen en n det d de determining ete ter erm minin min nin ng tthe he c concentrations oncentr tra rat atio ion ons ns so off tho th those hos ose se materials m mat ate ater eria ial als s und u under nde nder er eith ei e either the her err E EPA’s PA’s ffed federal ederal ra all reg re rregulatory egu gul ula ato tor ory ry y le llevels evels s (FR (F (FRL) FRL RL) L) or o California’s C alifo lifor orn rni nia a’s s ttotal ota tal al thr tth threshold hre eshold d lim lli limit mit c mit concentrations on nce cen ent ntr tra ation io ons ns s (TT (T (TTLC). TT TLC). IInvestigators nvestig tigator to ors rs s lo llooked ooked at at bot b both oth o h om o omnidirectional mnid idi dirrecti cttio onal (w (with with ith llu lumen umen me en n
THE NEW STANDARD IN LED AREA & ROADWAY LIGHTING TThe ASPIRE® AP650 luminaire is suitable ffor area, roadway, site and general lighting applications. Providing excellent vertical light distribution, high uniformity, and lasting performance, the ASPIRE® is ideal for commercial, institutional and municipal markets.
o utput e equivalent quiv iva val ale ent to o a 606 60-watt 0-w 0 wat watt a th household ousehold d inc in incandescent nca can and nde des esc cent b bulb) ulb lb) b) and an and d output d ire irectio tional (w (with with itth h lu llumen umen um no output utput e utp equivalent quiva iv val ale ent to oa an n ave av a average ver era rag age e 656 65-watt 5-w 5 wat watt a t directional iincandescent ncandesce sc cen ent ntt BR30 BR BR30 lamp) lam la am mp) mp) p products. products. pro ts s. The The he tes ttested te estted d lam la lamps am mps gen g generally ene ener era all lly y did did not no ot exc e exceed xce x eed ffederal edera ral al lim llimits im mits itts for ffor tthe he tes te estted e elements, lem le em ments, how h however ow owever a almost lm most a all lll e exceeded xceeded C California’s alifforni rn nia a’s T TTLC TLC tested llevels evels ffo forr c copper, opper, a and nd a n nd num number umber a um approached pproach hed do orr e exceeded xceeded tthe he sstate’s tat ta ate te’s e’s nicke nick kel el llimits. im mits its. S Several eve ev ver era ral al CFL CFL FL a and nd LED LED ED lam la lamps am mps also also oe exceeded xcee eed ede ded ed dC California’s alifo lifor orn rni nia a’s s nickel a nti tim mony mon ony ya and nd zin z zinc inc lim li limits. mits. mit antimony IIn na add addition ddi dditi tio ion n to to mea m measuring easurin ing ng g the tth he ea amounts moun mou ount nts s of of haz h hazardous aza azar ard dous m material at ate ter eria ial al within wit na an n iindividual ndivi iv vid dual p product, rod ro odu duc uct ct,, the th he e rresearchers esea se ear arc rch hers a also ls lso so o com co compared om mpared tthe he within potential p ote ten ent ntia tial al llif lifespan-weighted ife fes span-w weig igh ght hte ted d iimpacts mpac mpa pact cts s tthe he var v varying a ary ying in ng g ttechnologies ec ech chn hno nol olo ogies ie es could co ould h have ave w within ith ithin a llandﬁ andﬁll, ll, b based ased o on nc con concentrations once ncentrati attio ons wit w within ithin na an n individual in ndi div ivi vidu du ual pro p pr product. rod odu duc uct ct.. T The he s selected elec le ect cte ed bas b baseline ase aseli lin ne w ne was as tthe he 5 50-gram 0-gr -g gra ram am mw weight eig eiigh ht ht a nd 1 10,000-hour 0,00 ,0 000 000-h hour ass a assumed ssumed med ed life life e for fo or a C CFL FL llamp. amp. mp. p So, So, o b because ecause inc in incannca can annand desc des esce ents mig m might ight rrequire equir ire re m more ore ffrequent req re equ que uen ent ntt rep rre replacement, epl pla acem ment, men nt, the tthey th hey ey y may may a descents c ontri trrib bute mor m more ore ore en nickel ick ickel to o a llandﬁ andﬁll ove o v verr tthat hat 1 0,00 ,0 000 000-h hour p eriod io od. d. contribute over 10,000-hour period. L EDs w were ere erre ea assumed ss ssu sum um med tto o hav h have a ave ve ea2 25,000-hour 5,00 ,0 000 000-h hour lif li life, fe, but bu utt the th ttheir hei eirr g greater reat ea ate ter er LEDs
ALWAYS INNOVATING ALWAYS IMPROVING
m ass was was as see se s seen een en n to oo offset ffs ffset the th their hei eirr llifespan ife if espa sp pan an na advantages. dvantages. es s. mass Across a Acr all ll pro p product roduct ttypes, yp pes, es s, s screw crew w ba bas b bases, ase ses es,, d drivers, riv riive verrs, bal b ballasts alla a las ast sts sa and nd w nd wires ire irres es Across o lam la am ments were were wer e e the the greatest grea gre r atestt contributors con cont co ntr trib ibu but uto tor ors s to to above-threshold abov abo bove ve-t -th thr hre res esh hold d orr ﬁlaments llimits im mits its o off tthe he s studied tudied ied e elements. le ements ts.. T This his was was tthe he ca cas case ase ew with ith ith th the he tes te tested sted LED LED ED lam la lamps—the am mps—the int in internal nte ter ern nal lig li light ght s sources ources ce es s wer w were ere not not o tthe he pro p problem. rob robl blem em m. And m. And n the th he e rep re report epo por ort rt aut a authors u uth tho horrs not n noted o ote ed tthat hat h hazardous azardou us mat m material ate aterrial ia al iis so one ne of of a n numummber ber e of of fac ffactors fa ctor to ors rs s tha th tthat hat at nee n need eed eed d to ob be ec considered onside id der ere ed iin n eva e evaluating val valu uatin ting any any ny p particuart rti ticu cuular la arr lam la lamp’s am mp’s o ove overall vera ver all env e environmental nvi nviro ron onm nm menta men ntal im impact—if mpact ct— t—i —if if rreducing educing in ng gh hazardous azard arrdo dou ous us waste wast was a te c content onten te ent ntt res re rresults esu sul ults ts s in in low llower lo wer wer er lam llamp la mp e mp efﬁ fﬁ ﬁcac ca cacy, acy cy, y, for fo orr exa ex example, xam am mple, mpl p e, end e end-ofndnd-o ofllife ife iffe w waste aste stte e red re rreduction edu duc uct ctio ion on nc could ould d be be o overshadowed versh rs sha had ado dow ow wed by by hig h hi higher gher her ene e energy nerg ner gy use use s
800-621-3376 | firstname.lastname@example.org www.sternberglighting.com
and, a nd d,, s so, o, la llarger arger life li life-cycle fee-c cycle clle env en e environmental nvi virronmen ment enta al im impact. mpact.•
The New Linear
Powerful, Low Profile Cove LLuminaire C i i
PRODUCTS: LUMIO LAMP
Book It Independent architect Max Gunawan could write a book on how to use crowd funding to launch a creative business—but he’s probably too busy bringing production of his new book-shaped Lumio lamp to commercial scale. He left a position in corporate design in 2012 and launched his idea for a collapsible LED luminaire on the crowd-funding site Kickstarter in mid-February, with a goal of raising $60,000. Within a month, enthusiasts had pledged $578,000. The cordless lamp weighs a bit more than 1 lb. and has a rechargeable battery promising up to 8 hours of 500-lumen illumination. The laser-cut wood “covers” are offered in blonde maple, warm cherry and dark walnut ﬁnishes. Open up the Lumio, and see light shine through the Tyvek
tSpecification grade tEven linear light distribution tCoves, wall washes, indirect t2700K, 3000K & 4000K tSeveral optical solutions tUp to 100 lumens / watt
pages within – open the covers wider for brighter light. The covers incorporate magnets that allow the ﬁxtures to be mounted onto metal surfaces.•
ABOVE: The Lumio offers a lot of interesting possibilities as an ambient ﬁll and accent light. The idea of a small notebook light that can be used in a mobile capacity like a tablet is especially useful—especially in sometimes dim environments, such as a restaurant.
877- SSL- GREEN download brochure at
NEWS: TUBE LIGHTING REPLACEMENTS
Philips Puts a New Spin on Fluorescent Replacement Royal Philips Electronics has announced a new
watt of high-quality white light (compared with
promises to drive massive energy and cost sav-
innovation in LED lighting, creating an energy-
100 lm/W for ﬂuorescent lighting and just
ings across the globe. The TLED lamp is expected
efﬁcient LED light source suitable for general
15 lm/W for traditional light bulbs). This proto-
to hit the market in 2015 for both ofﬁce and
lighting applications, most speciﬁcally as a
type is twice as efﬁcient as predecessor lamps,
ﬂuorescent tube replacement source.
basically halving the energy used. With lighting
Philips researchers developed their TLED prototype that produces a record 200 lumens per
The TLED prototype lamp also marks the
accounting for more than 19% of the world’s
ﬁrst time that lighting engineers have been able
total electricity consumption, this innovation
to reach 200 lm/W per watt efﬁciency without compromising on light quality, with all parameters required to meet the stringent requirements for ofﬁce lighting. “This again is a major
STEP | IN-GRADE | UP & ACCENT | BOLLARDS & PATH LIGHTS
breakthrough in LED lighting and will further drive the transformation of the lighting industry,” says Rene van Schooten, CEO Light Sources & Electronics for Philips Lighting. “After being recognized for our quality of LED light, mimicking traditional light bulbs, for creating new experience with the Philips Hue—the connected light system for the home as previewed in the January issue (p. 11)—we now present the next innovative step in doubling lighting efﬁciency. It’s exciting to imagine the massive energy and cost savings it will bring to our planet and customers,” he says. The TLED lamps are intended to replace ﬂuorescent tube lighting used in ofﬁce and industry, which currently account for more than half of the world’s total lighting. Conversion to the twiceas-efﬁcient 200 lm/W TLED lamps will generate signiﬁcant energy and cost savings. In the United States alone, for example, ﬂuorescent lights consume around 200 terawatts of electricity annually. If these lights were all replaced with 200 lm/W TLEDs, the U.S. would use somewhere around 100 terawatts less energy (equivalent to 50 medium sized power plants), saving more than U.S. $12 billion and preventing
Vista Architectural Lighting continues to build a reputation of excellence
around 60 million metric tons of CO2 from being released into the atmosphere.•
on a trusted foundation. We’re committed to supporting your success with American made, expertly engineered ﬁxtures superbly crafted to your speciﬁcations. Visit our new website to learn how Vista is leading the way with superior service and lighting solutions that will exceed your expectations.
800-766-8478 | www.vistapro.com
The New Linear
High Efficiency LED Ultra Low Profile
EFFICIENT CITIES: PASADENA
Pasadena Gains Rosy Savings From LEDs Well known for the Rose Bowl Parade, Pasadena
they replaced. This is the latest of several
also has been recognized by Popular Science
projects undertaken between the lighting
Magazine as one of the 50 greenest cities in the
manufacturer and Pasadena over the last
United States. A recent streetlight-replacement
several years. The company also has supplied
project will only help enhance its reputation as
recessed ceiling luminaires to replace existing
an environmental leader. Approximately 200 LED
ﬂuorescent ﬁxtures in the Pasadena Central
lamps from LEDtronics—in either new ﬁxtures
Library’s document room, and designed a 95-
or as replacements for metal halide products in
watt LED cluster to replace metal halide lamps
existing ﬁxtures—now help illuminate the city’s
that had totaled 900 watts in pendant ﬁxtures
streets. The new 27-watt lamps cut energy con-
mounted in the library’s main lobby and other
sumption by up to 80%, vs. the 100-watt lamps
MANUFACTURER: GLOBAL LIGHTING TECHNOLOGIES
Shining a Light on Its Own Products
Actual Size Profile
Employees at the headquarters for LED-ﬁxture manufacturer Global Lighting Technologies are getting some ﬁrst-hand experience with the luminaires they sell. The company has replaced all the existing ﬂuorescent units with its own 2
t Over 250 Lumens / Foot t Over 70 Lumens / Watt t Commercial, Plug N’ Play
ft. × 2 ft. and 1 ft. × 1 ft. ceiling ﬁxtures. The new luminaires use the company’s edge-lit light guide technology. In this design, LEDs are strategically spaced along one or two edges of the guide. The ﬁxtures use an average of 65% less energy than those they replaced, so this building-wide showroom for the maker’s products also should be signiﬁcantly less expensive to operate.•
877- SSL- GREEN download brochure at
12 • 05.13 • ARCHITECTURAL SSL
CAN YOU PREDICT PRODUCT LIFECYCLE?
By Kevin Willmorth, editor
THE HªZY ΩAGIC o PREDICTING USEFUL LIFE o LIGHTING SYSTEMS
Lighting products do not live forever. Products
L70), MTBF (Mean Time Between Failure) of driv-
Without acceptable standards for service
that are lightly used last longer than those exposed
ers and power supplies, or color shift/consistency
life deﬁnition, the market would fall victim to a
to abuse. Some technologies tolerate certain
change over time. Technologists might suggest
confused mix of smoke and mirrors marketing.
environmental conditions well, while others fail
that service life is also be deﬁned by the point at
Universal metrics established by industry organi-
with the slightest provocation. Further, regardless
which a newer technology is available that justiﬁes
zations create a foundation upon which customers
of a desire for simple monolithic standards for all,
replacement using an ROI calculation, regardless of
can base objective decision making. What metrics
deﬁnition of end-of-life also varies by customer
existing system condition. These are also less obvi-
are used and how they might be applied is where
expectation. Spot re-lampers see end of life as the
ous legacies of technologies having a life of their
the divergence begins. While standards attempt
moment a light source ceases to emit photons.
own, as evidenced by the Edison socket—created
to establish how long products can be reliably
Group re-lampers see end of service life as a point
as an incandescent lamp foundation, now evolv-
depended upon, practical experience shows that
at which a portion of failures has occurred, or time
ing into a de-facto interconnect separate of light
these are seldom universally accurate. Populations
passed, to trigger preventive maintenance. For sol-
source technology. No product survives inﬁnitely.
of light bulbs often live well beyond their rated
id-state technology, service life is equally diverse.
While deﬁning what constitutes the end of usable
lives, while others fail much earlier. In solid-state
“Life” may be deﬁned by lumen depreciation (L50 or
life may not be crystal clear, it is far from magic.
lighting, similar behavior has been observed, with
ARCHITECTURAL SSL • 05.13 • 13
actual service lives both exceeding and falling well short of predictions. While this might be interpreted as a failure in the predictive metrics, the reality is that the best any singular numeric metric can accomplish is to represent a mean level of overly generalized behavior. Without consideration of switching and/or dimming cycles, ambient operating temperatures, incoming power ﬂuctuations, surrounding physical environmental factors, suitability of the product to its use, tolerance for color shift over time, and an understanding of manufacturer test procedures, it is impossible to predict the life cycle of a product with certainty. Inclusion of all signiﬁcant factors in a life-cycle calculation is subject to a litany of estimations, inaccuracies, and complex interactions requiring more diligence than most lighting customers are willing to invest. In an attempt to dumb-down evaluations, the establishment of lumen depreciation as a foundation for life expectancy has emerged and is widely accepted. Unfortunately, this approach is decidedly ﬂawed and attributed with greater value than it
the LM-80 test results, the lumen depreciated life
deserves. The underlying assumption is that the
rating offered is a guess at best.
manufacturer involved used actual LM-80 data for
LM-80 data does not offer lumen depreciation
the speciﬁc LED employed, tested the product to
in a luminaire system, as it does not include any
establish operating temperatures and calculated
down-stream system components. Plastics used
the lumen depreciation of the entire system using
in optics, thermal interface materials, encapsu-
the established TM-21 calculation procedure to
lating materials, driver/power supply electronic
create an estimated service life rating. Evidence
components and reﬂective surfaces all degrade
that this is true is the proliferation of a single
over time, accelerated by exposure to heat. None
“50,000hr to L70” service life rating applied to a
of these are included in LM-80 test results, nor
wide range of products with decidedly disparate
are they a component of LM-79 testing other than
constructions. If each manufacturer were indeed
what is present in a new product’s conﬁguration at
completing the actual predictive calculations, or
time of testing. These factors must be included in
testing products in-situ using a series of LM-79
product lumen depreciation values, as they are not
tests over time, this would not be the case. The
generally included in lumen depreciation calcula-
odds of a large population of manufacturers of un-
tions elsewhere. This is rarely well understood by
related products coming to exactly the same result
manufacturers, so it is frequently ignored out-
are statistically impossible. Further, the actual
right in setting a “service life” rating. When these
result of calculations using TM-21 will be repre-
factors are considered, the ubiquitous “50,000hr
sented as a value such as >36,000hr L70 / 8,000,
to L70” service life statements universally applied
indicating the number of hours for the LED test
in most solid-state lighting product literature
data, limiting the maximum claimed service life
based on LM-80 test data duration. For products
One of the big winners among Lightfair’s Innnovation Awards was Philips and its Boldplay luminaire, winning most innovative product at the show. But with continued innovation in SSL products comes a continued need to advance in predictive maintenance in order to establish a product’s true life time. Rather than outright failure, or even data suggested by L70 information, true lumen depreciation will only be gauged with dedicated light level monitoring—either with meters or a computerized system, along with pre-established procedures to rejuvenate or replace sub-par systems.
Compounding the question of lumen depreci-
built using LEDs that have no certiﬁed LM-80 test
ated service life is the acceptability of that rate of
data, use of the lumen depreciation terms “L70”
loss within a lighting application. If the product
or “L50” are simply invalid. If the manufacturer
lumen loss is not included in the lighting design,
cannot provide information as to the operating
degradation of applied performance becomes the
temperature of the LED and how it correlates with
determining factor. For example, if the lighting
14 • 05.13 • ARCHITECTURAL SSL
“Service Life” Contributing Variables
DOE: LED Luminaire Lifetime Report
Total reliability relies on individual reliability
Failures from a sampling of 5,400 outdoor luminaires
of LM-80 predicted lumen losses. Since experience has shown the failure incidence to be signiﬁcantly
lower than this, a greater understanding of calcu-
lating reliability from MTBF ratings is required.
10 Electrical Connections
In “MTBF and power supply reliability” published
7% < 1%
0 Power Supply Failure
LED Package Failure
Failure from 34,000 Hours
in Electronic Products (Aug 2009), John Benatti explains that failures occur at a greater rate in the early and late phases of product use, presenting signiﬁcantly lower losses over the middle portions of a products life than will be experienced later. In
the lighting system will have suffered additional losses from outright product failures, regardless
that within a typical LED product's L70 service life,
the article he explains that at 8,760hrs, only 8.4% ABOVE: An overwhelming percentage of luminaire failures stem from the onboard electronics, instead of the LEDs. LEFT: While there are numerous other intangible variables, these are the physical components comprising a luminaire.
of products with a 50,000hr MTBF rating will have failed. As the product reaches its “wear out” period, this rate will increase rapidly. Regardless, a loss of 8.4% within 8,760hrs of operation for products advertised to deliver over 50,000hrs of reliability is a signiﬁcant contradiction. The key to long service life in solid-state
“BEYOND THE FLAWS IN LUMEN DEPRECIATION AS A LIFE RATING IS THE REALITY THAT MOST SOLIDSTATE PRODUCTS SUFFER MORE COMMONLY FROM POWER SUPPLY MALFUNCTION THAN LED FAILURE.”
in standard light loss factors, most founded on
products is the composite of an LED source with
the legacy of re-lamping cycles, which are well
high reliability and strong lumen maintenance
short of the longer 50,000hrs+ predicted service
characteristics coupled to luminaire compo-
life of LED light sources. For this reason, inclu-
nents that retain their initial performance over
sion of higher lumen depreciation factors must be
the expected life of the LED, powered by driver/
included to recognize the lack of interim mainte-
power supplies with reliability characteristics
nance over the life of the products employed.
well matched to the anticipated life of the LEDs
Beyond the ﬂaws in lumen depreciation as a life
employed, assembled into luminaires that control
rating is the reality that most solid-state products
heat effectively. An LED with an LM-80/TM-21
suffer more commonly from power supply mal-
lumen depreciation life of 100,000hrs connected
function than LED failure. According to the DOE
to a power supply with questionable reliability,
system is designed with an assumption of lumen
report “LED Luminaire Lifetime: Recommenda-
assembled with compromised optical and thermal
loss less than the combined LED lumen loss and
tions for Testing and Reporting”, in a sampling of
components will never deliver reliable results.
environmental factors (dirt depreciation, etc…),
5,400 outdoor luminaires, only 10% of failures were
This further illustrates the lack of credibility in
the delivered illuminance will fall below the de-
attributed to LED package failures, while 59% were
the universally stated 50,000hr L70 rating.
sign levels before the LED has depreciated within
from driver (7%) and power supply (52%) failures.
the stated service life rating—making an L70
While the report indicated that <1% had actually
ing with lamps and hardware with minimal
rating irrelevant. To facilitate use of the entire
failed at 34,000hrs, the implications are quite clear.
consideration of lumen losses, or degradation of
rated service life requires inclusion of a 30–50%
Electronic components also impart their own
materials over very long lifetimes. With a legacy
lumen loss, plus all other standard applicable
impact on lumen depreciation and degradation of
of renewal by re-lamp to reset light delivery
loss factors. This is signiﬁcantly greater than
efﬁcacy as products age. Unfortunately, rating the
every few thousand hours, the more complex and
incandescent and ﬂuorescent lumen deprecia-
failure mode of these components is often stated
complete considerations required for solid-state
tion expectations, but is inferred when luminaire
in terms of MTBF (Mean Time Between Failure),
life prediction is too often overlooked. This applies
service life is founded on lumen depreciation.
too often confused with estimated life rating. Un-
to manufacturers and lighting decision makers
This is speciﬁcally critical in life-safety areas,
like lamp life, which is based on 50% of products
alike. Where manufacturers are guilty of short
such as exit corridors, as well as exterior parking
failing, MTBF indicates that for a population of
cutting product factors and testing, decision mak-
and roadway applications. Aggravating this is the
1,000 products put into service, a random failure
ers often overlook the impact of longer service life
assumption of maintenance cleaning including
can be expected every 100hrs. This would indicate
on lighting calculations, as well as ignoring the
The lighting industry is accustomed to work-
ARCHITECTURAL SSL • 05.13 • 15
impact that ambient conditions have on the life of
approach. Light level monitoring, either with
products rated by lumen depreciation established
meters or computerized system, coupled with pre-
THE SUM OF ALL PARTS
at a speciﬁc temperature. The ease with which an
established procedures for rejuvenating or replac-
overly generalized lumen depreciation value has
ing sub-par systems will be required. Additionally,
become a surrogate for lamp life is an indication of
conventional lighting technology has been stable
the laziness inherent with legacy behavior.
for so long that consideration of retroﬁtting to
While L70 is a standard that provides some guidance on the life time a user might expect out of an SSL ﬁxture, the latter is the sum of many parts, not just the LEDs themselves: Plastics used in optics, thermal interface materials, encapsulating materials, driver/power supply electronic components and reﬂective surfaces all degrade over time, accelerated by exposure to heat. None of these are included in LM-80 test results. These factors must be included in product lumen depreciation values, as they are not generally included in lumen depreciation calculations elsewhere.
The legacy of conventional lamp technologies is
attain greater performance is not a part of regular
further evident in the approach the lighting indus-
building maintenance schedule. The result is that
try takes in product development. In design, lamp
even when solid-state lighting presents the op-
degradation is seldom a signiﬁcant issue, while
portunity to realize signiﬁcant gains, the installed
ballasts require minimal consideration for heat
base of easy-to-maintain conventional products is
exposure. In application, lamp failures force a cer-
difﬁcult to dislodge from conventional thinking.
tain amount of attention to be paid—from cleaning
Lighting technology will continue to advance in
bugs out of outdoor products, to wiping off a lens
performance and reliability, as well as complexity.
in the process of re-lamping a ﬂuorescent ﬁxture.
For this reason, the assumptions learned from
Through this, conventional lighting products have
simpler conventional sources will need to be re-
established a foundation of reactive behavior in
dressed. This includes consideration of all factors
maintenance of lighting systems. The rhythm of
that impact service life, including recognition that
failing lamps also continuously renews lighting
any simple single numeric metric and unquali-
system output as it ages. Solid-state lighting sys-
ﬁed assumptions by decision makers or manu-
tems create no such regular demand. While a few
facturers are not supportable. Just as a smart
products will fail prematurely, the majority will re-
phone is more complex than a rotary dial phone,
main lighted well beyond that point where lumen
solid-state lighting is a technology that demands
loss from LED degradation and dirt accumulation
greater attention to detail in order to accurately
have created dangerous conditions and harm to
predict a products useful end. The answer to de-
productivity or comfort of occupants living under
termining solid-state service life is not magic—it’s
them. For this reason, relying on a product to go
just a matter of applying careful consideration to
dark to signify a need for maintenance is an invalid
blow away the haze of uncertainty.•
16 • 05.13 • ARCHITECTURAL SSL
© 2013 OSRAM SYLVANIA.
Light that leads to eye-opening ideas. Deﬁne your space with modern curves and better illumination that easily adjusts to the task at hand. With the award-winning signature design of OSRAM RLC22 LED luminaires, it’s possible to deliver ambient illuminance levels free from the troffer aesthetic deﬁned by ﬂuorescent lamps. The RLC22 blends beautiful form with energy efﬁciency in a luminaire that will make any space memorable. So dare to be different and go with lighting that leads. To learn more about the RLC22 and our other LED luminaires, please visit www.sylvania.com/indoorluminaires, or call us at 1-800-LIGHTBULB.
TOPICS AT THE FRONT
Re-imagining Exterior LEDs By Vilma Barr, contributing writer
From festoon lights in Salt Lake
experimented with gallium arsenic
from primarily functional—walk-
sensing technologies, puts the LED
City to the top of the Empire State
phosphorus (GaAsP) as a route to
ways and street and highway light-
above pretty much all the other
Building, from the classic façade of
wide bandgap tunnel diodes—in
ing—to art forms and entertain-
alternatives,” he indicates. “To me,
a mega-deli in Munich to a doorway
other words, toward making lasers
ment and building image identity.
the LED represents an extension
surround in lower Manhattan, the
visible. He authored a paper in
Can the industry support such a
of information, entertainment and
ascending LED star has altered
1962 describing a GaAsP laser, and
pace of new product introductions
personal technology into the built
the way exteriors are showcased,
innovative lighting technology has
for exterior applications?
environment through light. I can
accented, and integrated into the
taken over from there.
surrounding environment. While LED lighting technology
Since the world turned the
Tapio Rosenius, director of the Lighting Design Collective SL, with
see a lot of potential there.” During LED’s formative years,
corner into the 21st century, the in-
ofﬁces in Madrid, London, and
Rosenius says, the nighttime
lacks a certain Thomas Edison
troductions of improvements to the
Helsinki, believes that the ability
exterior environment suffered
“inventor identity” regarding its
output, regulation, color rendering
of LED technology to control very
from poor quality light and
creation, LEDs do have a sort of
accuracy, and life-span of LEDs
small packages of light individually
optical control, and overuse of
“Father” in the form of then-GE
have seemed to approach mach-
will lead to even newer artistic and
color-changing light. “This is set to
scientist Dr. Nick Holonyak. While
speed. Their applications for the
technical solutions. ”Parametric
change now that LED technology
working on lasers, Holonyak
exterior built environment range
control, coupled with meaningful
is reaching maturity. How well and
18 • 05.13 • ARCHITECTURAL SSL
230 Park Avenue, New York City
sible for the new lighting of the
Until last December, the architec-
top of the Empire State Building.
tural details of the 84-year-old,
For 230 Park Avenue, the entire
34-story-high structure spanning
north-facing façade, including the
the intersection of Park Avenue and
spire-top, is a palette of pattern-
45th St. could be appreciated only
changing LEDs. For most evenings,
during daylight hours. A product
the façade is white, with colors
of Warren & Wetmore, architects
beaming from the top.
of the adjacent Grand Central
At intervals on the ﬁfth, 16th,
Station, it was originally known as
32nd, and 33rd ﬂoors, illumination
the New York Central Ofﬁce Build-
is provided by a mixture of 700
ing to house the rail company’s
headquarters. Real estate investor
beam Large and LBX ﬁxtures, and
Harry Helmsley later renamed it to
Lumenfaçade ﬁxtures with narrow
reﬂect his involvement until it was
optics to accent the details. The
purchased by Monday Properties,
sloping roof was dramatized by
who chose to identify it by its ad-
Lumenbeam Large and LBX ﬂood-
dress—230 Park Avenue.
lighting ﬁxtures, while the cupola
Monday Properties’ pride in ownership manifested itself in a visual upgrade and re-imaging program
glistens with narrow-beam Lumenbeam and Lumenfaçade ﬁxtures. Responsible for the programming
of the 1.4-million-sq-ft. building.
for the pattern- and color-changing
Part of the company’s strategy was
sequences was Joshua Baker, Lu-
to establish the building’s place on
menpulse’s Applications Engineer-
the city’s skyline with new lighting.
ing Manager, who utilized a Pharos
Selected to turn the objective into
LPC-1 Lighting Playback Control-
reality was lighting designer Alfred
ler with Designer software. Each
Borden of the Lighting Practice,
luminaire is capable of individual
Philadelphia, who was also respon-
A NEW ICON IN MANHATTAN’S EVENING SKYLINE
A system was devised to anchor the mounts to exposed structural joints rather than drilling into the building’s surface, preserving 230 Park Avenue’s landmark status. An all-white program is beamed on the north façade most evenings, with color-changing capabilities for holidays and special events. Photos: Evan Joseph; Lighting, Ed Ledeman/Monday Properties
how quickly the design community
“Now, my ﬁrm’s activities are what I
des Arts in Montreal. “White light
use of bollards to illuminate the
comes up with some truly original
call ‘architainment’ such as the LED
manufacturers are producing small,
walkway leading up to the main
applications for this technology for
exterior constructions used for The
efﬁcient, and brighter ﬁxtures with
entrance. Instead, Bauer selected
the outdoors is the challenge.”
Cube in Winnipeg and the illuminat-
individual controllers that give us
4-in.-square LED paver modules by
ed grain silos with narration telling
this capability. We’ve not yet seen
Martin rated at 3.6 watts per tile.
president and creative director of
the history of the City of Quebec.”
all the beneﬁts for lighting that can
LEDs were also used for illuminated
Ambiances Design Productions,
Gagnon’s most recent production is
be adapted from the electronics
signage and behind multi-color pan-
admits to having assembled his
the Fresque de Nuit sound and light
industry,” he states.
els as part of the store’s façade. A
own LEDs in 1996 for a theatrical
show beamed onto the façade of the
production in collaboration with
Montreal-based Martin Gagnon,
set designer and director Robert
Gagnon credits advances in
LED also has quite a role for
prototype power substation under
interior and exterior uses when it
construction is replacing high pres-
comes to lighting design for retail,
sure sodium with LEDs for exterior lighting.
Lepage. Two years later, Gagnon
LED lamp and ﬁxture miniaturiza-
says Bernard Bauer of Integrated
customized a set of LED controls for
tion that have contributed to the
Lighting Concepts, Westlake Vil-
a Cirque de Soleil production. “Five
ability to keep lighting sources
lage, Calif. For the Neiman Marcus
handful of other case studies that
years, ago, my practice was mostly
out of user’s view, such as those in
branch store in Walnut Creek, Calif.,
identify innovative and exciting
architectural lighting,” he says.
the decorative ceiling at the Place
a local ordinance prohibited the
uses of SSL on building exteriors.
In the following pages are a
ARCHITECTURAL SSL • 05.13 • 19
The Bay Lights, San Francisco Earning the distinction since March as the world’s longest LED illuminated art sculpture, the 1.8-mi.long Bay Bridge that connects San Francisco with Treasure Island is adorned with 25,000 white LEDs. Visual artist Leo Villareal individually programmed the $8 million Bay Lights installation into hundreds of different patterns to be seen for a two-year run. A total of 300 vertical cables ranging in length from 50 ft. to 2 ft. are ﬁtted with Philips Color Kinetics eW Flex SLX LED nodes with a correlated color temperature of 4200K. Installed on the suspension bridge’s north side, it is visible from the San Francisco area from dusk to midnight. Bay Lights, which receives most of its power from dedicated solar panels
in Davis, Calif., was coordinated by
Inspired by the 75th anniversary of the Bay Bridge, the art project by Leo Vilareal uses LED and networking technology to allow the lights to dance over the cable spans. Image: Courtesy, Philips Color Kinetics
Caltrans and Illuminate the Arts.
City Creek Center, Salt Lake City With 900,000 sq. ft. of retail space, ﬁve condominium buildings, and an ofﬁce building, City Creek Center is a new 23-acre development covering three city blocks that anchors the downtown revitalization of Salt Lake City. Flowing through the center of the project is a previously covered waterway that was used as a source of fresh water by the region’s settlers. Horton Lees Brogden Lighting Design created the illumination program for the multi-use site. Above the roadway into the Center, HLB and architects Hobbs & Black agreed on a contemporary version of festoon lighting customized by Auroralight’s LHL50 Candela LED luminaire. They are hung in a random pattern in 12-, 24- and 36-in. lengths.
The custom LED Festoon hanging lights bring the scale of the surrounding buildings to a more intimate and welcoming level. Image: Jean-Pierre Bonin
20 • 05.13 • ARCHITECTURAL SSL
The Empire State Building, New York City From the 72nd ﬂoor to the top of its mast, the Empire State Building is a symbol for the New York City skyline as is the Eiffel Tower for Paris or Big Ben in London. Malkin Holdings, the building’s owners, launched a $550 million renovation program for the 83-year-old, 2.3-million sq ft, 1,250-ft-high tower. They decided to change the existing cumbersome metal halide lighting system of the upper ﬂoors and mast. The Lighting Practice, Philadelphia, was commissioned to re-create and enhance the building’s landmarked nighttime appearance. Supplier of the new system was Philips Color Kinetics with a custom version of their ColorReach Powercore luminaire, a long-throw RGBW ﬂoodlight. Initial estimates of the reduction in operating cost is over 80% for the crisply brilliant appearance of the new LED tower lights.
As part of a renovation of the landmark structure, its owners wished to create a new nighttime appearance. But beyond creating a new look, the new system is saving more than 80% in operational costs. Image: Courtesy, the Lighting Practice
Uniqlo, Osaka, Japan Located in Osaka’s central shopping area, Uniqlo’s 13-story branch has a façade with an overall glow for everyday or holiday-inspired images and graphic animations. Lighting consultant was Sirius Lighting Ofﬁce. To achieve this 29,920-sq.ft. installation, 312 Traxon Dot XL-9 RGB were installed behind an ETFE ﬁlm, which acted as the façade’s second skin as well as a diffusion material, spreading Dot XL’s light across each 29-sq.ft. metal-bordered square. The ﬁxtures were paired with an e:cue Lighting Control Engine (LCE), 32 Butlers, and a Connect Base 3 that activates the LED lamps for after-dark visual broadcasting.
STANDING OUT IN A CROWD
Known primarily as a rooﬁng material, a new version of EFTE (ethylene tetraﬂuoroethylene) was created to form a double layer translucent ﬁlm that was inﬂated on-site to create a cushion-like surface with LEDs installed behind the panels on all four of the store’s façades. Image: Courtesy, Traxon
PROFLEX SERIES Architectural/Commercial mercial Grade LED Flood
Block Headwear, New York Sergio Mannino loves transforming spaces into ones full of character and color. When tapped to create the façade of the company’s ﬁrst U.S. store, he wanted to make a big impact on the Lower East Side neighborhood.
The ProFlex is an architectural ﬂoodlight incorporating our patented, industry-leading optics, resulting in unsurpassed light output and uniformity.
The illuminated façade certainly attracts ProFlex 14
attention. Inspiration, he says, came from the brand’s products and logo—with the latter actually repeated throughout. But Mannino also drew inspiration from the neighborhood itself, as the store is across the street from one of New York’s most famous graﬁtti walls. “The intersection [of art] still tells the story of a New York that doesn’t exist anymore, but
that is still missed by many,” says the artist.
U Building Facades
The façade is illuminated by 73 LEDs inside the yellow letters which are made from SIntra PVC. Azek products are used for the back paneling, complimenting the design. Image: Courtesy, Sergio Mannino.
Trees U Parking Lots U High Bay Low Bay ProFlex 28
For more information visit
VERSA SERIES Machined Accent LED Landscape Lighting
The machined and anodized Versa is the most versatile accent in the industry. The Versa series luminaires are power-house accent ﬁxtures – using minimal watts of power to deliver the highest CBCP.
Dallmayr, Munich, Germany
height pilasters above the ground level arched
Attracting over 1.5 million visitors a year to
windows; and Glim Cubes for the fourth ﬂoor
its downtown Munich location, legendary food
windows. Dallmayr, which was founded 300
purveyor Dallmayr has a newly illuminated
years ago, distributes such products as its coffee
façade, fully lit by LEDs, from the two-level-
tall pilasters to the top garrets. Lighting
U Landscape Lighting U Tree Lighting U Accent Lighting g U Statue Lighting g Sign Lighting Circle 10
designer Tom Schlotfeldt speciﬁed three types of luminaires by iGuzzini: Miniwoody
the third ﬂoor columns; Woody LED ﬂoodlights
The aim of the new architectural lighting was to show the splendor of the entire surface of the façade. As a result, lighting focuses on details, notably the columns.
with a spot optic for uplighting the double-
Image: Courtesy, iGuzzini
LED ﬂoodlights for the garrets and features of
Inspired by Nature
Invented by Nichia Only nature produces better, more efficient light than Nichia, inventor of the white LED. And with nature to inspire us, we are ever researching, developing beautiful light that lasts longer using less energy...through our broad product offerings. So for all of your lighting needs, get inspired! Ask for the worldâ€™s best LEDs, only from Nichia.
Ever Researching for a Brighter World
info @ nichia .com Circle 11
Burlington Arcade, London Clients: Meyer Bergman & Thor Equities Architect: Blair Assocs. Architecture Lighting: Speirs + Major Electrical: Polyteck LED product manufacturers: Mike Stoane Lighting, ACDC Lighting, Control Lighting Text: Speirs + Major Photos: James Newton The Challenge: Situated between Bond Street and Piccadilly in London, the Burlington Arcade is one of the world’s oldest and most celebrated shopping destinations. Almost 200 years old, it has a rich and varied history, including being the shopping choice of the cream of British society. The aim of the project was to restore the arcade to its original design and its former glory as Britain’s most historical retail destination. A speciﬁc part of the client brief was also to provide a more natural lighting solution that would accentuate the building’s magniﬁcent architectural detailing. This required the lighting to have a minimal physical impact. The Solution: Speirs + Major were commissioned to redesign the lighting in conjunction with heritage architectural specialists Blair Assocs. First on the docket was the removal of low-hanging modern ceiling lights which, for the ﬁrst time in over 100 years, opened up the unobstructed and original view of the arches down the full length of the arcade. The color temperature changes throughout the year, evoking the softness of candlelight.
24 • 05.13 • ARCHITECTURAL SSL
Victorian Sensibilities Addition by Subtraction
driven both by a desire to improve
arcade, facilitating the installation
The lighting scheme also had to
the sustainability of the scheme
of temporary lighting equipment
address a number of important
and by increased demands from
and allowing the installation to be
practical considerations. In ad-
elsewhere on a limited electrical
fully controlled and operated from
dition to stripping back the large
supply to the building. Speirs +
an event lighting desk.
quantity of exposed light ﬁttings
Major also worked to reduce the
and cabling—and replacing it with
maintenance required; not only for
renovation, a look back helps bet-
concealed ﬁttings and wiring
the cost beneﬁts, but to protect the
ter understand the full story. The
infrastructure where possible—the
long-term appearance of the instal-
arcade’s history runs parallel to the
mall had to operate on a reduced
lation by reducing the chance of ﬁt-
development of artiﬁcial lighting.
total load compared to the previ-
ting focuses being changed. Finally,
Initially gas lit, the arcade was
ous installation, which was already
the installation had to support the
subsequently illuminated by incan-
very energy efﬁcient. This was
many events that are held in the
descent lighting and later by dis-
Before delving into details of the
charged lighting. The consequence
the addition of dedicated uplight-
the daylight conditions. 4000K
of these changes was not only the
ing was the key component in
white light, for example, is used on
loss of the historic ﬁxtures and the
improving the appearance of the
dull summer days; this balances
original illuminated appearance
arcade. Achieving this required the
well with the daylight, making the
of the arcade, but each iteration
ﬁrm to work with LED manufac-
artiﬁcial light almost impercep-
left its own legacy—many times
turer ACDC to design a new min-
tible. On a winter’s day, a warmer
unwanted—in terms of conduits,
iature linear LED lighting product
temperature, closer to 3500K, is
cabling and defunct equipment. Ad-
incorporating a barn-door system
used to provide a more inviting
ditionally, the northern end of the
to provide simple control over the
appearance in the lower ambient
arcade was completely destroyed
during the Blitz in World War II. Upon reviewing the structure, the Speirs + Major team decided
Variable color temperature was
The arcade was purchased in 2010 by a joint venture comprising two international specialist retail real estate investors, Meyer Bergman and Thor Equities, whose aim was to physically restore the iconic property and reinstate the historic space as a global luxury shopping destination.
Throughout the year, after dark,
built into the system to allow the
the color temperature is warmed
appearance to be adapted to suit
progressively down to 2700K and
ARCHITECTURAL SSL • 05.13 • 25
dimmed to evoke the softness of
particular proﬁle of conduit was
the corners of the skylights; the LED
selected by the architect that could
ﬁxture is proﬁled to match the an-
be integrated imperceptibly into the
gle of the skylights. It incorporates
corners of the window frames.
transverse louvres to minimize
Uplighting is supplemented by spotlighting at the archways to highlight the rhythm of the archi-
Following the removal of the
visibility and is adjustable to avoid
tecture. Miniature LED ﬁttings
reproduction lanterns, downlight-
using elliptical lenses are po-
ing needed to be re-introduced to
sitioned on either side of each
maintain appropriate light levels at
also been provided to help them to
archway to provide an accurate
the ﬂoor of the arcade and to cre-
improve the lighting of their shop
ate brighter levels adjacent to the
windows as they refurbish their
shop frontages. A custom ﬁxture,
units as well as to try to ensure
much as possible, great efforts were
developed for this purpose, was
that their lighting complements
made to conceal the wiring too. A
integrated as subtly as possible into
the look of the arcade as a whole.
Beyond concealing the ﬁxtures as
26 • 05.13 • ARCHITECTURAL SSL
U A layered lighting scheme
was developed to highlight the key architectural components of the façade. Uplighting the curved ﬂank walls completes the scene.
any catch on the skylight edges. Guidelines for the tenants have
The Arcade has taken home a number of honors, including one form the British-based Lighting Design Awards, and most recently an Award of Merit from IALD.
NOTABLE HISTORY Z The Burlington Arcade
opened in 1819 after Lord Cavendish commissioned architect Samuel Ware to enclose a troublesome alleyway on the western boundary of his London estate, Burlington House—now home to the Royal Academy. Originally it housed a range of 55 specialty shops providing luxury goods such as pocket watches, writing pens and jewelry. The upper echelons of society ﬂocked to Burlington Arcade, a trend that has continued ever since, because of the combination of discretion of service and the high quality of products. Z Royalty has long favored Burlington Arcade, a tradition which began when the Prince Regent (later George IV) bought gold lace for his uniforms there. Perfumers Penhaligon’s still holds two Royal Warrants, and at Christmas members of European royal families are often found perusing the arcade for gifts. Z Burlington Arcade is not immune to misfortune. Fires in 1836 and 1871 caused terrible damage, and in 1940 a German bomb destroyed its north end.
events, an interface has been pro-
façade is architecturally quite com-
programmed to change automati-
All of the arcade lighting is
vided that allows external contrac-
plex, so a layered lighting scheme
cally through the day. During the
tors to plug in their DMX lighting
has been developed to highlight
daytime, uplighting and downlight-
desk and to take control over every
the key architectural components:
ing are only used when there is
lighting element individually to
the main archway, the window
insufﬁcient daylight, with color
give them total creative freedom
archways, the balustrades and the
temperature being used selectively
over the look of the arcade. As soon
coat of arms. Additional lighting is
according to the season. During
as users unplug their equipment,
provided to identify the arcade by
the course of the evening, these
the lighting is restored to its previ-
highlighting signage and the ﬂag.
main lighting elements progres-
The composition is completed by
sively dim and warm, allowing the
uplighting the curved ﬂank walls
detailing of the architecture to be
just inside the main archway, help-
revealed by the spotlighting. For
Burlington Arcade’s Piccadilly
ing create a welcoming entrance.
Z Beadles—the original “mall cops”—enforce the by-laws of the Arcade laid down in 1819, which include a prohibition against the opening of umbrellas, whistling, bicycles, public “merriment,” and the playing of musical instruments. The rules may seem archaic now, but were put in place to stop criminal activity and to maintain an ambience of gentility. Z The original Beadles were recruited from non-commissioned officers of the 10th Hussars, the former regiment of Lord Cavendish, and are the smallest private police force in the world, pre-dating the Metropolitan Police by 10 years.
ARCHITECTURAL SSL • 05.13 • 27
Besides concealing both the
along the edge of the canopy.
ﬁttings and wiring, the main chal-
The Art Deco façade at the northern
lenge on the façade was to achieve
end of the arcade is considerably
is the underside of the canopy.
a consistent quality of white light.
simpler than the Piccadilly façade.
Previously this had been a simple
The variety of unique lighting ele-
For the distant views, it is grazed by
hardboard sofﬁt into which half a
ments required the use of ﬁxtures
a close-offset curtain of light, which
dozen metal halide downlights had
from ﬁve different manufacturers.
gives the building a gentle presence
With LED being used for its size,
and dramatically reveals the coat
efﬁciency and dimmability—in all
of arms in relief. From closer views,
buildings, a new glazed canopy has
but the ﬂag spotlighting—great
the detail of the façade is revealed
been backlit to provide real impact
care was taken to select the correct
through the gentle uplighting of
for the entrance and a welcoming
binnings for each manufacturer to
the ﬁnials, the ﬂag lighting and the
appearance on winter’s days and
create as close a match as possible.
concealed uplighting of the signage
during the evenings.•
28 • 05.13 • ARCHITECTURAL SSL
The key feature of this entrance
U During the evening, the main
lighting elements progressively dim and warm, allowing the detailing of the architecture to be revealed by the spotlighting.
In keeping with similar Art Deco
Experience precision as never before, with FINO,our new, stunningly thin indirect LED lighting solution. Designed to promote a crisp, comfortable work environment, FINO runs seamlessly across the walls without interfering with wall studs, leaving your ceilings pristine clean. Add our 10 year limited warranty, and FINO is the LED ďŹ xture youâ€™ve been waiting for. For more information about FINO visit us at amerlux.com or call 973-882-5010.
So thin. So precise. So FINO.
The Award-Winning kíaroLED Family
BETTER Introducing the exciting new kíaroLED Post Top LED Luminaire from EYE Lighting! Best-in-Class Backlight, Uplight and Glare control optics are now available in the beautiful, clean lines of the kíaroLED Post Top LED Luminaire.
To learn more about kíaroLED, visit www.eyelighting.com/LED Call us at (888) 665-2677 or email us at EYE.LED@eyelighting.com Circle 12
ILLUMINATING A RENOWNED ART DECO DISTRICT IN BELGIUM Carmes District Namur, Belgium
Namur, capital of the Wallonia region of Belgium, is also a global reference in Art Deco architecture with its historic Carmes district. Therefore, when the town desired new illumination for buildings on three of the streets of the district, that lighting absolutely needed to highlight the numerous architectural features on the historic façades. Following World War I, Art deco architecture, a distinct departure from Art Nouveau, boasted streamlined, geometric shapes. The curves faded in favor of straight, angular lines using industrial materials. Flat roofs, bow windows, multi-colors and friezes with abstract or stylized patterns are characteristic of Art Deco architecture. To best detail the Art Deco features without taking away from the architecture, lighting designers Ores and Radiance 35 worked with LED lighting manufacturer LEC to create customized solutions. In fact, the company designed and produced more than 235 lightbars and spotlights for this unusual, multi-building project. All this equipment was adapted, in size and lighting effects, to the characteristics of each feature on each façade. “The district was built in 1928 in Art Deco style. Until now there was no illumination, so we decided to develop customized architectural lighting using LED technology,” says David Decellier, Street Lighting Designer for ORES, one of the two ﬁrms working on the project. Several constraints were linked to these illuminations. The ﬁrst, says Decellier, was gathering the necessary authorization from each resident in order to to install the lighting equipment on the façades. To do so, in collaboration
ABOVE: When the Belgian town of Namur desired new illumination for buildings on three streets in its historic Carmes district, customized LED lighting from LEC was chosen to highlight the numerous architectural features on the Art Deco-style façades.
with the town, a project meeting was organized to present the equipment that was going to be installed. “The second hurdle concerned nocturnal nuisance as we were working on inhabited
Images: Namurimage pour LEC.
façades,” says Decellier. “This problem was resolved using pinpoint LED lighting which en-
ARCHITECTURAL SSL • 05.13 • 31
CARMES DISTRICT, NAMUR, Belgium
THE CHALLENGE: Re-light the streets of a historic Flemish Art Deco-inﬂuenced district in the town of Namur. This lighting retroﬁt, however, would not involve mere replacement of older area lighting, but would entail direct illumination of the architectural details of the buildings on the streets themselves. Each building would then require the permission of the occupants to make said changes. THE SOLUTION: Lighting designers ORES and Radiance 35 developed a plan to create custom LED luminaires, manufactured by LEC, that would not only allow the city to save money in energy and maintenance costs, but would allow it to discreetly mount the new ﬁxturs to the buildings themselves, which would allow highlighting of the Art Deco details—something that had never occurred in the town’s history. PROJECT CREDITS:
Management: Town of Namur
DESIGNED FOR THE DETAILS Because Art Deco-styled details on columns, moldings, and sculptures vary, the illumination of these features was designed on a case-by-case basis. LEC adapted the angles, beams and color temperature of the LED spotlights to provide a personalized illumination focused on its subject.
Lighting and Visual Design: ORES and Isabelle Corten, Radiance 35 PRODUCTS:
LEC: Customized LED lightbars and spotlights.
Lifetime, he says, was also a major criterion
turer, 5mm LEDs generate less heat than smaller,
as LED ﬁxtures require less maintenance and
but higher power sources, so the lightbars could
replacement. “This aspect was very important
be equipped with 165 LEDs per meter, minimizing
for Namur, which bears the maintenance costs
the space required.
of the decorative lighting,” says Decellier. “LED also consumes less energy than other technolo-
Spotlights Highlight Façade Details
abled us to focus on each feature. The ultimate
gies available for applications like these; which
For lighting related to columns, moldings, and
adjustments were made in situ.”
of course is one of our selection criteria.”
sculptures, these Art Deco-styled architectural
A ﬁnal issue involved the discretion of the ﬁx-
But perhaps the best reason that LEDs were
details vary in the district. The illumination of
tures in the daytime. “LEC provided us with very
chosen was that the power consumed for the
these features was therefore examined and
discrete solutions which we colored with very
entire project is less than that of the original
designed on a case-by-case basis. In accordance
carefully selected colors,” says Decellier.
functional sodium lighting.
with the lighting designer’s speciﬁcations, LEC
To avoid having to install additional protec-
As far as the ﬁxtures themselves, LED
adapted the angles, beams and color tempera-
tive cables, because many of the ﬁxtures are
lightbars, from 30 cm to 2 m, were installed for
ture of the LED spotlights, thus providing a per-
very close to the windows, the ﬁrm was required
linear surfaces. For the illumination of linear
sonalized illumination focused on its subject.
by local law to install low-voltage lighting solu-
features—moldings, friezes and the like—the ob-
tions only; all LEC products are only 24 volts.
jective was to create accurate lighting adapted
Flexible and Meticulous Organization
to the subject, with good uniformity. LEC thus
The implementation of a project like this re-
Decellier, has been adopted in most cases by his
manufactured lightbars of 20 different lengths.
quired meticulous organization, from the design
company for exterior illumination because the
To improve the discretion of the ﬁxtures, power
to the installation of the lighting equipment.
light is much more “sober” than discharge lamps,
cables were directly integrated into the ﬁxtures,
Computer tools, qualiﬁed staff and management
which he says are too powerful for projects like
making them invisible. Each one was also
of the manufacturing processes enable LEC to
this. “We needed a directed and accurate ﬂux,”
painted with a RAL color corresponding to the
work on projects like Namur, integrating a multi-
color of the façade. According to the manufac-
tude of different references.•
Why was LED chosen? LED technology, says
32 • 05.13 • ARCHITECTURAL SSL
BUILT FOR PERFORMANCE When it came to site and area lighting for the Vince J. Whibbs Sr. Community Maritime Park, the City of Pensacola wanted an exterior LED luminaire that could deliver on performance and be cost effective. MayaLED was chosen because of its ability to fully deliver the potential of LEDs. Due to its outstanding optical performance, MayaLED post top luminaires could be installed further apart necessitating fewer luminaires, resulting in overall energy savings and lower acquisition costs.
Project: Community Maritime Park - Pensacola, FL Photo: Paul Brown
MayaLED Inspired by the miniature nature of solid-state lighting, MayaLED offers signiďŹ cant advantages in energy savings, lighting efďŹ ciency and visual comfort by incorporating advanced features in active thermal management and optical design.
1-866-LUMINIS I LUMINIS.COM
Only Acuity Brands provides you with advanced LED lighting seamlessly integrated with digital controls. This enables your lighting to be on when you need it – and off when you don’t – reducing energy consumption 24 hours a day. Visit www.acuitybrands.com/integration to learn more.
Attending 2013 AIA Expo? Earn your learning units at the Acuity Brands Learning Lounge. Circle 15
OFFICE GOES LED BULB FOR BULB AND FIXTURE BY FIXTURE Helix Architecture+Design Kansas City, Mo.
Founded in 1992 and located in the heart of the Crossroads in Kansas City, Mo., nationally recognized design ﬁrm Helix Architecture + Design focuses on people instead of structures. By focusing on the idea that great architecture and design transforms the world and its people, Helix’ unique business platform begins and ends with the people who live, work or play in the places they create. Implementing sustainable practices, the ﬁrm recently remodeled, including lighting, by retroﬁtting with top quality LED replacement lamps throughout their ofﬁce. Ofﬁcially launched in August 2012 and completed in January 2013, the upgrade was designed to reduce energy consumption, yet maintain quality lighting throughout the ofﬁce. The project involved the upgrade from the ﬁrms’ previous PAR30 and MR16 halogen sources to more efﬁcient LED replacement lamps. In a New Light Helix worked with local lighting designer Bruce Yarnell, of the eponymous Shawnee, Kan. ﬁrm, who recommended products from EiKO, another local company, with whom the lighting designer worked with to design custom LED solutions for the manufacturer’s new headquarters (visit the hot project archive of SSL Interactive [Jan. ’12] at architecturalssl.com). That project involved the creation of many custom LED-based ﬁxtures; Helix, however, desired a more traditional solution. According to EiKO, a top priority for everyone was ensuring that the quality of light and dimmability in the existing space was not com-
ABOVE: The classic before and after shots show the design firm’s conference room where 50-watt halogen MR16s were replaced with 6-watt LED equivalents. The replacement sources are RoHS certified and contain no mercury, a feature that appealed to Helix in helping the firm assure its investment in a sustainable solution.
promised. At the same time, energy efﬁciency and maintenance beneﬁts had to be guaranteed. The solution came in the form of EiKO’s LitespanLED replacement sources, including their 6-watt
MR16 and 15-watt PAR30 retroﬁt lamps. One of the reasons Yarnell turned to the LitespanLED
ARCHITECTURAL SSL • 05.13 • 35
HELIX ARCHITECTURE+DESIGN, Kansas City, Mo.
THE CHALLENGE: Update the offices of architectural ﬁrm Helix to a lighting environment that was not only more energy efficient, but one that preserved the lighting quality and dimmability of the previous incandescent- and halogen-illuminated space. THE SOLUTION: Lighting designer Bruce Yarnell worked closely with Helix’ Kathy Kelly and Mike Huele, as well as Curt Anderson with EiKO, to outline a path of investigation regarding the feasablity of a complete LED retroﬁt. The solution came in the form of 6-watt MR16 and 15-watt PAR30s that would deliver seamless transition from existing halogen and incandescent sources. The LED replacement sources produce light levels that are adjustable to suit individual preference; save 80% energy over the previous system; and come with a lifespan of 35,000 hours. PROJECT CREDITS:
Lighting Design: Yarnell Assocs. PRODUCTS:
EiKO LitespanLED PAR30s and MR16s. COMMITMENT TO QUALITY Helix’ offices operate roughly 12 hours a day, 5 days a week for 52 weeks of the year, meaning it consumes roughly 3100 kWh annually (calculated at a rate of $0.09). Beyond energy savings, a major priority was to ensure the quality of light and dimming capabilities were not compromised.
line is that it helped fulﬁll one of Helix’ main pri-
tones, color rendering of standard color swatch
orities to conserve energy while maintaining il-
sheets, color consistency within the beam on
lumination quality. The replacement lamps have
a white board, evenness of the beam, beam
light levels that are adjustable to suit individual
smoothness at the edges and dimming qualities
preference, which are perfect for conference
using a quality dimmer.
room settings, and more importantly, can result in savings of up to 80% of current electricity
A second test was then taken at the Helix ofﬁces, where an entire conference room was re-
costs compared to the previous technology. The
lamped with retroﬁt sources that featured color
sources also come with an average lifespan of
temperatures at 3000K for the PAR lamps, and
35,000 life hours, meaning fewer replacements.
2700K with the MR16 replacements. Helix’ entire team of architects then critiqued the solution, in-
cluding dimming capabilities with their existing
To gauge how the new lighting would stack up,
dimmers, for further evaluation. Furthermore,
EiKO and Yarnell created guided visual compari-
foot candle readings were taken during the
sons in the form of photos of the lamps along
on-site test to fulﬁll one of the main priorities
with the measured reactions in order to test
of Helix: to conserve energy while maintaining
various quality issues seen by the naked eye.
illumination quality. Although tests were strictly
Characteristics that were evaluated included
visual, they were top-notch for the lay person’s
lamp aesthetics, color temperature on skin
impression of the top manufacturers.•
36 • 05.13 • ARCHITECTURAL SSL
FINE RETURN The use of EiKO’s LitespanLED PAR30 and MR16 replacements resulted in an annual energy savings of $1,800 with a 1.3-year return on investment. The retrofit cost $2,400 in installation costs.
The Nora Lighting Brands…Solutions for tomorrow. F L U O R E S C E N T · M E TA L H A L I D E ·
· L O W V O LTA G E · I N C A N D E S C E N T
Sp e cif ie d Per formance
Flexible Form and Func tion Line Vo lt age R a il
Illuminating the f uture
Dallas Trade M
New, Larger Show
By Kevin Willmorth, editor
New Technologies Deliver Unique Opportunities for Design Advanced plastics will foster new LED designs and efficiencies.
While the majority of solid-state attention is paid to the LED light
In addition to the use of plastics in conducting heat directly away
sources themselves, several other areas of advancement are creat-
from sources, thermoplastics and graphite materials can be used to
ing new opportunities for product design. Beyond the light source
increase planer conductivity, spreading heat away from a point source.
and electronics, there are two other disciplines involved in solid-state
GrafTech International offers a range of graphite-based interface ma-
lighting product deployment: Thermal and Optic. As LED efﬁcacy has
terials that allow designers to tailor thermal conductivity in through-
improved, so have each of these areas, creating a compounding of per-
thickness, as well as laterally through the material, to eliminate hot
formance improvements available to product designers.
spots. The RTP Company offers several injection grade polymers with
Thermal Technologies That Take the Heat Off
wide range of design needs, with structural properties that are similar
Solid-state lighting demands control of the heat generated by the
to ﬁlled nylon.
a range of through and lateral thermal conductivity proﬁles to suit a
LEDs employed. Ultimately, heat must be dissipated into the environment away from the light source. To facilitate this connection, heat
New Optical Dimensions
must be conducted from the rear of the LED into an appropriate heat
Traditional optics include metal or metalized reﬂectors, or TIR (Total
sink that has been designed to eliminate the energy absorbed. In the
Internal Reﬂection) PMMA plastic optics placed over the LED source(s)
past, increasing the conductive efﬁciency path included use of thermal
to direct light into desired intensity regions. Other approaches include
grease between the LED and a heat sink, usually made from aluminum.
conventional painted surfaces and sheet diffusers. While effective,
The liabilities of this approach include the loss of conductivity as the
these methods often add undesirable physical dimension to a product,
grease dries or leaches out from under the LED, as well as the weight
and frequently lack efﬁciency.
of heat sinks made from extruded or cast aluminum.
New generations of optical treatments create increased efﬁciency with proﬁles often as thin as a few thousandths of an inch. These materials can be used to diffuse and blend multiple light sources, as well as
Plastic offers advantages that are attractive to product designers, but lacks the thermal conductivity required. Yet recent advancements in graphite-, metal-, and ceramic-ﬁlled plastics can deliver advantages including a 70% reduction in weight and reduced component counts.
modify the shape of the light emitted. With transmissions of between 80 and 97%, these materials offer signiﬁcant gains in total efﬁciency. Fusion Optix is a leading supplier of these materials, in both plastic and glass materials as well as ﬂat and shaped forms. They also offer light guide materials for edge light applications, transﬂective materials for combination optical designs, light shapers, and reﬂective materials. Luminit offers a range of LSD (Light Shaping Diffuser) materials that in-
Plastic offers the advantages of lightweight and formability attrac-
corporate holographic surface processing to produce high transmission
tive to product designers, but lacks the thermal conductivity required.
(85-92%) diffuser and light shaping ﬁlms. When applied over LED ar-
Yet recent advancements in graphite-, metal- and ceramic-ﬁlled plas-
rays, these materials conceal individual LED images, while generating
tics deliver the advantages of engineered plastics, reduced component
a desired symmetric or asymmetric light distribution pattern. Further,
counts, a 70% reduction in weight, and the elimination of secondary
Bayer Material Science offers Macrolon Lumen XT, a polycarbonate dif-
fuser material with high efﬁciency speciﬁcally for LED application.
Examples of companies offering this technology include Thermal
For diffuse reﬂectance, White Optics, LLC offers a range of ﬂexible
Solution Resources, which offers standard and custom product incor-
materials that can be thermo-formed or applied in sheets to lumi-
porating their SSL Plastic heat sink technology; and Cool Polymers,
naire interiors, delivering up to 98% reﬂectivity and 97% diffusion for
which offers a range of CoolPoly LED Series TCP thermally conductive
smoothing optical distributions and eliminating color variations in light
plastics for LED application. Bayer Material Science offers Macrolon
patterns. A similar product is offered by Fusion Optics.
TC8030 polycarbonate. Injection molding allows creation of complete
The combination of lightweight thermal components with these ﬁlm-
and unique shapes that are difﬁcult to duplicate with other methods
based optical materials creates unique opportunities for creating new
without secondary machining, so waste is reduced, while many of
designs around LEDs that are efﬁcient, comfortable to look at, light in
these materials are fully recyclable at end of service life.
weight, and reﬁned in design considerations.•
38 • 05.13 • ARCHITECTURAL SSL
AIA Continuing Education
“ Enjoyable and very clearly
- Travis, 6/24/2012
“This was an excellent course- one of the
best I have taken. Would like more information on window details and details at base of building” - Ellen, 6/1/2012
“This was a course! Information is matter of fact explained and easy to retain. By far the best one hour course I have taken” - Janis, 4/6/2012
add to your product library…good course”
- Devin, 1/23/2012
Informative and easy to understand presentation.”
- Jennifer, 6/28/2012
These are just a handful of the public comments you can see under every course on TCA. And surveys continue to show that the TCA user experience is the best in the business. Visit, explore, register and take a course – for free – today!
Optimizing Performance in Commercial Fenestration
Ventilated Wall Systems: Porcelain Stoneware Cladding Solution for Energy Efﬁcient Buildings
Three Innovations Changing the Face and Function of Fabric Architecture
By Peter Lieffrig, General Manager Intelligent Buildings Division, TE Connectivity
Control Your Costs Implementing dimming and controls through connectivity
Commercial buildings, including hotels, hospitals, schools, ofﬁce
The lighting industry requires interconnect solutions that can
buildings and retail stores, are among the early adopters transition-
address both high voltage and low voltage lighting control for intel-
ing from traditional lighting sources to solid-state lighting in an effort
ligent buildings. These connector systems are adaptable for seamless
to reduce their electric energy consumption. In addition to the lower
integration into existing building wiring and wireless infrastructures
power consumption of the SSL elements, lighting controls are essential
and/or new construction builds that are highly modular. This type
in facilitating further cost savings. Each one of these energy reduction
of modular build gives the lighting designers, engineers, contract
solutions comes with its own complexities. Lighting manufacturers that are adopting lower-energy-consuming LEDs within their designs and architecture require cost effective solu-
manufacturers, and lighting OEMs a high degree of ﬂexibility in ﬁxture selection and placement. One example of a modular wiring connector system for high-voltage
tions to integrate the chip-on-board (COB) LED arrays into their ﬁx-
applications is TE’s NECTOR M power system. This particular intercon-
tures and to accommodate thermal and electrical connectivity. Today's
nect solution is a fully pluggable, lighting power and control cabling
COB solutions vary in size, but predominantly the LEDs are centered
system for permanent electrical installations. The system allows
on the COB with opposing diagonal electrical contacts. A number of
electrical contract manufacturers the ability to engineer, design and
interconnect solutions exist for these COBs that can be roughly clas-
build power distribution units, electrical devices and cable assemblies
siﬁed into dedicated and scalable products. While a dedicated solution
off-site that result in reduced on-site labor costs.
is self-explanatory, a connectivity solution to address a majority of the
This multi-pole, keyed, modular wiring approach is available for
COB market requires a scalable COB holder that adjusts to the size of
lighting designers, contractors and OEMs that want ﬂexibility in dis-
the overall array.
tributing power to various lighting systems and other control devices
Scalable holder solutions ease the incorporation of SSL elements
common in all buildings. The inherent multiple branch circuit capabil-
into lighting ﬁxtures and architecture. The scalable LED holder utilizes
ity simpliﬁes cabling in the premises and its circular form factor makes
board contact pads referenced to the corners of the array, so it can be
routing during installation simple and fast. The option with ﬁve poles
used with a virtually limitless range of board sizes. Board assembly
provides the power and signal connections for emergency lighting
is simpliﬁed by the elimination of two-piece separable connections or
applications while the seven pole connector provides additional power
hand soldered terminations. With each holder clamping the corner of
and signal connections for color control lighting capability.
the COB and ensuring a positive electrical and mechanical connection
The growing interest in low-voltage applications is driving the
to the board, wire termination is as simple as stripping and poking the
development of specialized low-voltage connector systems. One
wire into the connector, minimizing the applied cost.
example is the NECTOR S power system which is also a fully pluggable
Intelligent buildings incorporate sophisticated lighting control
connector and cabling system for low-voltage lighting power and
systems that automatically adjust the light output of COB arrays in
control applications. The solution provides a quick plug-and-play
ﬁxtures based on the demands of the building’s occupants. These de-
power connection between lamps such as lighting wiring in ofﬁces;
mands come in the form of work space task lighting, personnel trafﬁc
kitchen, bathroom, and ofﬁce furniture; display cabinets; and mount-
patterns throughout the building, the amount of natural lighting within
able lighting. The two-pole system provides a six-way distributor with
an area, and general safety requirements. Controlling the lighting
an additional switch feature for control, while the four-pole solution is
environment intelligently to meet these demands will provide energy
suitable for low voltage dimming or color control applications.
savings and simultaneously a more comfortable work environment. Control is accomplished through both wired and wireless mediums to
Lighting control applications within intelligent buildings can also be implemented wirelessly to save installation time. Wireless protocols
perform basic on and off functions as well as dimming or complex scene
exist in a number of formats, both proprietary and open standard.
control. At the simplest level, a wired control system may be imple-
Each has its own beneﬁts to the end application, so care should be
mented via a pair of wires or a multi-conductor cable. More sophisti-
given before choosing a protocol—especially proprietary. Regardless of
cated systems that use networking cable and equipment or a modular
the transport medium, wired or wireless, the choice of connectivity to
wiring approach to lighting control are available on the market today.
LEDs and lighting controls is essential in saving time and money.•
40 • 05.13 • ARCHITECTURAL SSL
Somewhere, under the rainbow...
OLED Modules A new option for ﬁxture designers is now available with the introduction of the OLEDmodule LUREON REP from Tridonic, which offers efficacy of more than 50 lm/W in neutral white. Producing up to 12,000 lm/sq. meter at a color temperature of 4000K, the modules are only 3 mm. thick, enabling a range of professional lighting applications. ´ Visit www.tridonic.com or Circle 291.
Tridonic’s LUREON REP OLED modules are only 3 mm. thick, enabling a range of professional lighting applications.
1 Outdoor Lamp Replacement The new LED Post Top Retroﬁt Lamp from MaxLite replaces traditional metal halide and highpressure sodium products in post-top ﬁxtures. The 36W lamps feature a standard color temperature of 6500K; sealed aluminum bodies provide thermal protection and heat transfer. ´ Visit www.maxlite.com or Circle 292.
2 A Cool Opportunity The Nuventix LED Cooler R150-170 is designed for high-power high-bay ﬁxtures, for use as a standalone heatsink or in combination with up to three of the manufacturer’s SynJets. It offers the ability to cool up to 20,000 lm. in a 6-in.-diameter design. ´ Visit www.nuventix.com or Circle 293.
3 More Lumen-ous The Sierra LED Column, a slender 13-ft. pedestrianscale pathway luminaire from Hess America, has been upgraded to boost lumen output by 300% to 360% over its initial design. Warm and neutral color-temperature options are available, as is ceramic metal halide lamping. ´ Visit www.hessamerica.com or Circle 294.
42 • 05.13 • ARCHITECTURAL SSL
They’re Frosty Universal Lighting’s new EVERLINE LED Modules with frosted lenses mask the pixilation that LED light sources can create, diffusing the illumination created by individual LEDs to produce a solid white appearance without the need for extra parts. The units are available in two models; the modules can be speciﬁed in a range of lengths and lumen packages. ´ Visit www.unvlt.com or Circle 295.
The EVERLINE’s frosted lenses mask the pixilation that LED light sources can create, diffusing the illumination.
4 Organically Speaking Nine OLED panels radiate in a vertical spiral to create Bern Unrecht’s 3X3 MACH 9 pendant. The secondgeneration Orbeos OLED panels from Osram can be easily repositioned and produce surface, rather than point-source, illumination. ´ Visit www.bernd-unrecht-lights.de or Circle 296.
5 Right in the Middle MidLev Series LED ﬁxtures from Phoenix Products are designed to replace low- to mid-level wattage HID ﬂoodlights, delivering up to 4,000 lm. Multiple lumen and optical packages are available, all featuring marine-grade extruded-aluminum housings, with a heavy-duty steel harp allowing for 360-degree rotation. UL certiﬁed for hazardous and marine locations. ´ Visit www.phoenixproducts.com or Circle 297.
6 New Drivers Suitable for use with LED modules from most manufacturers, Harvard Engineering’s 120V CL Analog LED dimmable drivers provide smooth 0-10V linear dimming in ﬁxtures up to 33W. Units are available in 700mA and 1000mA offerings. ´ Visit www.harvardeng.com or Circle 298.
ARCHITECTURAL SSL • 05.13 • 43
No Solder Needed The TE Connectivity Type Z50 LED Holder features snap-in LED retention and enables designers to develop ZHAGA-compliant modules around a common core. Optic attachment features were designed in cooperation with Carclo Optics and LEDIL to ensure a ﬁrm mechanical ﬁt, and holders are secured to the heat sink with standard screws. ´ Visit www.te.com or Circle 299.
Designers can develop ZHAGAcompliant modules around a common core thanks to the Type Z50 holder’s snap-in LED retention.
1 Higher-wattage Dimmability The 50W Hi-Lume A-Series LED driver by Lutron Electronics is designed for use with Philips Fortimo 3000 lm. and Xicato 3000 lm. modules, among other higher-power products. Units enable dimming from 100% to 1%, and can be software-conﬁgured into almost 7,000 unique models. ´ Visit www.lutron.com or Circle 300.
2 A Cool Opportunity With its soft, ﬁgure-8 proﬁle, Tech Lighting’s Unison suspension ﬁxture is equally at home in residential or commercial settings. The luminaire incorporates two, 20W ﬁeld-replaceable LED strips to produce both downlighting and ambient illumination. ´ Visit www.nuventix.com or Circle 301.
3 Never Too Thin The Lumiere Eon Bollard from Cooper Lighting is only ¾-in. thick and offers controlled LED illumination in forward throw, lateral throw and ﬂood beam patterns. The ﬁxture’s optical design allows spacing of up to 24 ft. in some conﬁgurations, with color temperatures of 2700K, 3000K and 4000K available. ´ Visit www.cooperlighting.com or Circle 302.
44 • 05.13 • ARCHITECTURAL SSL
New LED Luminaire Series Acclaim Lighting’s Dyna Series of LED white, linear wall and cove ﬁxtures features ouputs averaging 20 watts per foot, and up to 50 lm/W. Models for interior and exterior façade lighting, uplighting, wall grazing and cove applications are included, all in color temperatures ranging from 2700K to 4000K. The 1and 4-ft. sections can be linked together. ´ Visit www.acclaimlighting.com or Circle 303.
Acclaim Lighting’s Dyna Series features models for interior and exterior façade lighting, uplighting, wall grazing and cove applications.
4 Area Solution LSI Industries’ XAMU area light ﬁxture features a sleek, one-piece housing and delivers more than 17,000 lm, with reﬂectors available to create three individual distribution patterns. A range of energysaving options are available. ´ Visit www.lsi-industries.com or Circle 304.
5 Edge-y Panels Edge-Lit LED Panels from Nora Lighting can be recessed, surface-mounted or hung as pendants to provide glare-free workspace illumination. Featuring an opalescent lens, the pans can be speciﬁed in two sizes and a range of lumen packages. ´ Visit www.noralighting.com or Circle 305.
6 Coordinating Fixtures Contemporary-styled pendants and coordinating wall sconces from Jesco Lighting feature mix-andmatch components. Speciﬁers can opt for LED, CFL, metal halide or incandescent lamping, and choose from a range of pressed, textured and cased-glass shades in multiple available diameters to create customized ﬁxtures. ´ Visit www.jescolighting.com or Circle 306.
ARCHITECTURAL SSL • 05.13 • 45
ACUITY BRANDS AMERLUX B-K LIGHTING BODINE / PHILIPS EYE LIGHTING KIM LIGHTING / HUBBELL HUNZA IALD ILLUMITEX INTENSE LIGHTING JUNO LIGHTING GROUP LIGHTSEARCH LUMINIS METAL COATERS NICHIA NORA LIGHTING OSRAM SYLVANIA LUMILEDS / PHILIPS RAB LIGHTING SOLID STATE LUMINAIRES STERNBERG VINTAGE LIGHTING THE CONTINUING ARCHITECT VISTA ARCHITECTURAL LIGHTING
www.acuitybrands.com www.amerlux.com www.bklighting.com www.bodine.com www.eyelighting.com www.kimlighting.com www.hunza.co.nz www.iald.org www.illumitex.com www.intenselighting.com www.junolightinggroup.com www.lightsearch.com www.luminis.com www.metalcoaters.com www.nichia.com www.noralighting.com www.sylvania.com/led www.philipslumileds.com www.rabled.com www.solidstateluminaires.com www.sternberglighting.com www.thecontinuingarchitect.com www.vistapro.com
Circle 15 Circle 12 Circle 17 Circle 18 Circle 13 Circle 22 Circle 20 — Circle 10 Circle 21 Circle 03 — Circle 14 Circle 09 Circle 11 Circle 16, 19 Circle 08 Circle 02 Circle 01 Circle 05, 07 Circle 04 — Circle 06
34 29 41 41 30 BC 46 47 22 IBC 06 47 33 21 23 37, 46 17 04 IFC, 01 09, 11 08 39 10
EDITORIAL PREVIEW: In the July issue of SSL, we revisit LED’s impact on healthcare design, including its use in Chicago’s Lurie Children’s Hospital. Kevin Willmorth addresses the subject of calculated design vs. creating something on a series of universal assumptions that may not be so universal. Finally, we’ll take a look at a living LED lab, as a prominent manufacturer lights its own facility with SSL.
4", 6" & 8" High Lumen Commercial Downlights 850, 1250, 2000 and 3000 lumen packages 2700, 3000 and 4000K temperatures
a division of Nora Lighting Te l 8 0 0 . 6 8 6 . 6 6 7 2
46 • 05.13 • ARCHITECTURAL SSL
ANOTHER PERSON’S DARK SPACE IS OUR BLANK CANVAS. AN IALD PROFESSIONAL LIGHTING DESIGNER SEES THE POSSIBILITIES IN EVERY ENVIRONMENT. LEARN HOW AN IALD LIGHTING DESIGNER CAN TURN YOUR VISION INTO REALITY. VISIT IALD.ORG AND CLICK ON "FIND A LIGHTING DESIGNER" TO REFINE YOUR SEARCH.
PUBLIC PASSAGE | MUNICH, GERMANY | LIGHTING DESIGN, PFARRÉ LIGHTING DESIGN | © ANDREAS J. FOCKE
at the Speed of Light The industry’s most comprehensive and accurate lighting database with over 5,500 Lighting Manufacturers and 11,000 Product Categories. Lightsearch is a FREE online resource with query options designed by professional specifiers. It works the way you think.
By Kevin Willmorth
Wobbling Zombie Gear-Head Progress (Just Not at Home) While the commercial market has begun moving toward LED technology likes zombies wobbling toward a loud noise, the residential market remains unimpressed. This is not a market easily moved.
service lives of 70,000 to 100,000 hours are not
of all lighting energy, the savings is irrelevant.
as unrealistic as they were just a few short years
While we as a nation need to cut consumption,
ago. It’s enough to make the throbbing brains of
we as individuals have little motivation to bother.
any lighting gear-head glow with excitement. Yet, while the commercial market has begun
It is not just about price, it’s about value creation in the mind of the consumer—something
moving toward this technology like zombies
that energy efﬁcient lighting has failed repeat-
wobbling toward a loud noise, the residential
edly to deliver. While reducing energy is a value,
market remains unimpressed. This is not a mar-
it does not support the premium being demand-
ket easily moved by scientiﬁc data or compel-
ed in product cost and reduced light qualities.
If you are a tech gear-head like me, solid-state
ling performance numbers. Proof that it’s not
lighting may not be as intriguing as an F1 car,
about informing the ignorant masses: I’ve been
over low cost incandescent lamps when part of
but there is something fascinating here. There
shocked to ﬁnd that at-home adoption amongst
the premium available from energy reduction is
are now LED die breaching the 270 lumen per
the zealots of SSL is quite low. This should be a
sapped by 80CRI light with pink or green tones
watt barrier. Of course, this is all marketing ef-
warning sign to all. The residential market re-
in goofy looking bulbs that don’t ﬁt into ﬁxtures.
ﬁcacy. By that I mean efﬁcacy derived from a 20
ﬂects how individuals value a technology, which
Now, deliver a 100CRI light that looks and be-
millisecond pulse of energy through a very low
is more raw and honest than the commercial
haves in ways that exceed customer expectation,
current device, mounted to a thermal plate to
sector—where decisions are made with “other
while offering an easy-to-adopt inspired new
ensure it stays at a perfect 25°C temperature for
people’s money.” In defense, SSL proponents will
feature, and you might have something people
the entire 20 milliseconds, measured within an
point to costs as the core issue. Good point, if you
would be willing to pay extra for. In other words,
integrating sphere to capture every last photon
set aside the fact that consumers today spend
work as hard as other contemporary marketers
generated with no driver or optical losses con-
more on a growing number of non-essential ac-
do while absorbing more than their share of rev-
sidered. Sort of like the old days of auto makers
cessories than ever.
enue from the target customers, and we will see
reporting gross engine power. Still, give these lofty marketing numbers a
In reality, the cost of lighting a home each
It is impossible to extract a price differential
a real revolution. Anything less is just being lazy
month is invisible to the consumer. Even if it
in today’s toy-rich environment. Lighting needs
reality haircut of 50%, and the results remain
were shown as a line item on the utility bill, the
to take on this issue and stop wandering around
pretty impressive. We are realizing widespread
few dollars spent each month on lighting energy
the woods groaning about ignorant consumers.•
LED system (real world ﬁxture package) perfor-
just doesn’t rate a conversation. Here’s the math:
mance of between 60 and 135 lumens per watt.
In a home with 54 lamps, 60W each, burned 650
That means point source, optically focusable
hours each year, a total of 2,106 kWh is con-
halogen product performance at T8 ﬂuorescent
sumed. At $0.12 per kWh, that comes to a total of
efﬁciencies. Plus, emerging test results show
$21.06 per month. Most of us are spending many
ABOUT THE AUTHOR:
that these gains are long lived. L70 estimates
times that per week on fuel, wireless services,
Kevin Willmorth, a lighting expert and ﬁxture designer,
of 35,000 to 50,000 hours are beginning to look
and cable access. It’s not that LEDs don’t save
has been instrumental in helping create a vision and
pessimistic; it is likely that lumen maintenance
enough energy—it’s that, even if they cut 100%
mission statement for Architectural SSL.
48 • 05.13 • ARCHITECTURAL SSL
60$//$3(5785( +Ζ*+3(5)250$1&( '2:1/Ζ*+7Ζ1*
ȏ 5RXQGRU6TXDUH ȏ 7ULPRU7ULPOHVV ȏ WROP'HOLYHUHG ȏ /('0505/(' '2:1/Ζ*+7
Intense Lighting, LLC_$QDKHLP&$ 9LVLWXVDZZZintenselightingFRP
ȏ /('2SWLFVrrrr ȏ <HDUΖQWHQVH/(':DUUDQW\
ERA速 LANTERN LED This is LED Site Lighting Perfection. This is Kim Lighting.
www.kimlighting.com/products/era_lantern Circle 22