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2012-09-05
Applications, design and technology news from across the industry
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Commentary: Get Ready for the Lux Wars
 
... Up til now, the LED lighting industry has been fairly "source centric" in its messaging as it pushed forth the rising-efficiency story. In the last year or so, LEDs that top 100-120 warm white lumens-per-Watt (lm/W) have come down in price to join the mainstream "lumens per dollar" part...

View the full story at the bottom of the current news page, or if this page is a back issue, go here...

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Commentary...
Get Ready for the Lux Wars

 
... Up til now, the LED lighting industry has been fairly "source centric" in its messaging as it pushed forth the rising-efficiency story. In the last year or so, LEDs that top 100-120 warm white lumens-per-Watt (lm/W) have come down in price to join the mainstream "lumens per dollar" part...

View the full story at the bottom of the current news page, or if this is a back issue, go here...

DOE Publishes 2012 SSL Manufacturing R&D Roadmap
SolidStateLightingDesign News Staff

September 4, 2012...The US Department of Energy (DOE) has published the 2012 Solid-State Lighting (SSL) Manufacturing R&D Roadmap, which can be found at: www.ssl.energy.gov/sanjose2012_materials.html. The roadmap comes from recommendations made at meetings of LED and OLED experts in April. Other recommendations came from the 4th Annual SSL Manufacturing R&D Workshop in San Jose, California, June 13-14.

According to the DOE, the purpose of the Roadmap is to guide the R&D Programs and to help direct funding solicitations as well as provide guidance for equipment and material suppliers based on industry consensus about the expected evolution of SSL manufacturing. The goal of the manufacturing R&D initiative is to ultimately reduce costs of SSL sources and luminaires; improve product consistency while maintaining high quality products; and encourage the growth, leadership, and sustainability of domestic U.S. manufacturing within the SSL industry.

Many companies have ongoing DOE funded research projects in SSL manufacturing. Attendees to the Annual SSL Manufacturing R&D Workshop received updates of DOE funded projects from companies such as: Applied Materials, DuPont Displays, GE Lighting Solutions, KLA-Tencor, Moser Baer, Philips Lumileds, Sandia National Labs, Universal Display Corp (UDC), Ultratech, and Veeco. SSL Design PageTwo members login for more. Guests can view membership details.

LED Waves Produces LED Spot Light Bulb with Cree XP-D LEDs
SolidStateLightingDesign News Staff

September 5, 2012...LED Waves a company based in New York City, is offering an introductory 10% discount on the Dallas 2.0 Dimmable PAR20 LED light bulb, which consumes less than 9 Watts and serves as a replacement for a 75 Watt halogen spot light. The luminaire employs Cree's XP-D LED and can typically used in track lighting or recessed ceiling cans. Designed and built in the USA, this lamp is similar to the company’s original LED PAR20 in both form and function. Both lamps carry the LED Lighting Facts Products, having undergone impartial testing by the US Department of Energy CALiPER program.

The Dallas PAR20 was originally made with Cree’s 144 lm/Watt XLamp XP-G LED, the first chip to accrue 10,000 hours of LM-80 test data. The XB-D is the latest breakthrough in Cree’s line of LEDs optimized for PAR spot lighting. It combines the XP-G's light quality and efficiency with a 50% smaller footprint. Representing the brand's SC³ Technology Platform, the XB-D was developed with a silicon carbide base.

LED Waves points out that the company cuts out a number of middlemen in the lighting supply chain thus lowering the everyday price of the Dallas 2.0 is $35.95. The Dallas 2.0 and Dallas have beam spreads of 20° and 40° and color temperatures of 3000K (warm-ambient), 4000K (neutral) and 5000K (cool-daylight). LED Waves also offers an LED recessed down light, 2ft and 4ft LED T8 tubes, an industrial LED high bay, a 12v LED MR16, and other line voltage PAR LED flood light bulbs.

LED Waves' exclusive LED PAR spot light bulbs have proprietary aluminum heat sinks that are reportedly machined using Computer Numeric Control technology (a 3D printing process for metals), which maximizes surface area for heat dissipation. A custom-engineered lightweight aluminum board further supports thermal management. The company contends that these measures reduce stress on the dimmable LED driver as well as the chips thereby extending the lifespan of the luminaire. The Dallas comes with the company's 5 Year Warranty.

White Light Supplies Lighting for The Lion, The Witch and the Wardrobe Stage Production
SolidStateLightingDesign News Staff

September 4, 2012...This summer, White Light has once again returned to the majestic Kensington Gardens, supplying lighting to a new production of the timeless classic: CS Lewis’ The Lion, The Witch and the Wardrobe. The Threesixty° production staged in the round, which plays until September 9th, takes the audience on the fantastical and complex journey of siblings Peter, Susan, Edmund, and Lucy.

  Directors Rupert Goold & Michael Fentiman collaborated with scenic, costume, and puppetry designer Tom Scutt and lighting designer Tim Mitchell to create the magical and encompassing world of Narnia. The production required versatile and powerful equipment to solve challenges unique to this production.

  Mitchell made full use of White Light’s comprehensive inventory of lighting and effects equipment for the retelling of the classic tale. The rig included Martin Mac III, Mac 700 Spot, and Mac 700 Wash units as well as Rainbow color scrollers, which Mitchell used to achieve a variety of looks with limited rigging space. Pulsar Chromaheart and iPix BB4 LED fixtures were employed add color layers. Vari-Lite 3500Q and ETC Revolution moving fixtures added intensity and punch to the lighting palette. Then, to complement the moving fixtures, Mitchell chose ETC Source Four Profile and Source Four Par units. SSL Design PageTwo members login for more. Guests can view membership details.

 

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Philips Entertainment adds Showline to the Vari-Lite, Selecon and Strand Lighting Family
SolidStateLightingDesign News Staff

September 4, 2012...Philips Entertainment will debut professional lighting brand, Showline, and its range of professional entertainment LED fixtures at PLASA 2012 taking place at Earls Court, 9th – 12th September (stand BV 1-F50). Showline will join lighting brands Vari-Lite, Selecon and Strand Lighting on the Philips Entertainment booth in hall 1. 

According to Philips, Showline luminaires work seamlessly together with other Philips Entertainment Brand luminaires for consistent color matching, dimming, and operation along with intuitive, simplified set up.

As part of the new brand the company will introduce the SL BAR 640 and 660, the SL BAR 520 and the SL PAR 150. The Showline SL BAR 640 and 660 are powerful RGBW linear wash luminaires available in four-foot and six-foot configurations respectively. The company says that both deliver exceptional light output and accept a range of standard beam spread accessories to adjust the standard 60-degree beam angle. The SL BAR 640 and 660 can use split beam lenses, which allow for two different beam angles in the same luminaire to provide more even vertical coverage.

The Showline SL BAR 520 is a two-foot RGBW linear wash luminaire that produces over 8000 lumens of output.  It has a standard 8-degree lenses and high-resolution pixel mapping control, that is ideal for a variety of applications. The high output linear fixture will also be available in the future in a four-foot model.

The SL PAR 150 is a die-cast aluminium LED Par can that utilizes nine RGBW LEDs to produce over 3500 lumens of output.  Its manual zoom provides a beam angle range from 10 to 63 degrees. The company says that the split yoke bracket allows for easy hanging or floor mounting. All Showline luminaires feature built-in effects, 8 and 16-bit control modes, a reduced channel HSI mode, as well as a strobe channel. They come with standard mounting brackets for floor or pipe mount. According to Philips Entertainment a secure lock off and tight profile allow for close placement for smooth beam spreads. The luminaires also feature cable management for clean cabling and easy set up. The company notes that a huge benefit for rental houses is that units can be configured without power as the color displays have a battery back up supply.

Robe Fixtures Featured on 2012 Wacken Bullhead Circus Stage
SolidStateLightingDesign News Staff

August 30, 2012...At the 2012 Wacken Open Air (W:O:A) Festival in Germany, Robe moving lights helped create the dynamics for two stages in the Bullhead Circus tented arena. 

Headliners such as: The Scorpions, Machine Head, Sepultura, and many others performed in one of the biggest, best known and most popular metal fests in the world. Over 80,000 rockers gathered over three days to enjoy a wide selection of metal genre artists. 

Lighting for the double-staged Bullhead Arena was supplied by Crystal Sound based in Karlsruhe. 



Thomas Bartz from Konzeptsache Berlin designed an impressive cityscape set. The two stages were positioned side-by-side with a mesh-clad Layer scaffolding structure in the middle, complete with a boxing ring coming out into the audience. Artists used this to tease the crowd and strut their stuff!



The stage performances were operated in ‘flip-flop’ style to ensure that there was a constant onslaught of music to delight even the most die-hard of metal-heads! Bartz positioned the fixtures to be a fundamental element of the brief. The Robe fixtures used included 40 x MMX Spots, 46 x ROBIN 600 Beams and 30 LEDWash 600s. SSL Design PageTwo members login for more. Guests can view membership details.

Dialight Secures $1M order for Indonesian Copper & Gold Mine and Establishes Dialight Asia Ltd.
SolidStateLightingDesign News Staff

August 30, 2012...Dialight of Farmingdale, New Jersey USA, announced it has secured an order for almost 2,000 LED lighting fixtures to be supplied for a new underground conveyor system for an Indonesian copper and gold mine. Dialight also announced the establishment of Dialight Asia Pte Limited. 

The customer, an international mining company, chose Dialight’s LED fixtures for their longevity and reliability in harsh environments.  Dialight claims that its fixtures are resistant to shock & vibration common in these applications, and ultimately improve safety for the mine workers with reliable and enhanced illumination.



The project consists of a combination of DuroSite® LED High Bays, SafeSite® Class I, Div 2 Area Lights and associated mounting bracket accessories.  Dialight will begin to deliver product in September, with shipments continuing through the end of the year. Dialight Asia Pte Limited, is a joint venture with Lumina Holdings Systems Limited (“Lumina”) based in Singapore. Dialight Asia will reportedly be responsible for the promotion and sale of Dialight industrial white lighting products in South East Asia.

  The new company will get much of its supplies from Dialight’s new facility in Penang, Malaysia. The company plans to address key oil and gas markets in the region. A number of sales personnel will be transferred from Lumina, and Dialight Asia will recruit further sales people.

Cree Announces THE EDGE® High Output LED Series Area and Flood Luminaires
SolidStateLightingDesign News Staff

August 29, 2012...Cree, Inc. has introduced THE EDGE® High Output area and flood light LED luminaires. Cree says that the luminaires are capable of replacing high output sources of the past such as 1000 watt metal halide. They also use 50 percent less energy in most applications. The new luminaires feature more than 20 optical configurations. Among them is a new FrontlineOptic™ technology designed specifically for auto dealerships. THE EDGE H.O. luminaire delivers bright and focused light to applications seeking a high output solution.

“Buying a car is a visual experience and quality lighting has an immediate positive impact on the retail shopping experience,” said Mike Lallier, president and owner, Reed Lallier Chevrolet. “Cree designed THE EDGE High Output luminaire to meet the specific needs of auto dealerships. The revolutionary solution provides superior color quality that allows us to effectively extend our selling window after dark. The advanced optical control of THE EDGE H.O. luminaire delivers light precisely where it’s needed to always showcase our inventory in the best possible light.”

The company claims that THE EDGE HO luminaire offers an LED solution with a much broader and fuller color spectrum that more closely resembles the output from the sun and provides more realistic and distinctive color renderings that can enhance safety and contribute to a more consistent visual experience. SSL Design PageTwo members login for more. Guests can view membership details.

Osram Reveals forsa Survey Results and Announces 10 Euro 40-watt Incandescent Replacement
SolidStateLightingDesign News Staff

August 28, 2012...Osram announced the results of a consumer survey about energy efficiency and lighting. Osram also announced that it will soon offer what it claims to be the first LED-based replacement for 40-watt incandescent lamps with an recommended retail price about ten euros (about US$ 12.56).

In accordance with EU regulations, after 1 September incandescent lamps may no longer be brought onto the market. A representative survey conducted by the opinion research institute forsa on behalf of Osram revealed that 60 percent of consumers in Germany are highly interested in saving energy and more than a third are already using energy-efficient LED lamps.

The representative forsa survey conducted on behalf of Osram was of 1000 Germans. The survey revealed some profound knowledge deficits about the lighting regulations. Only a third of German citizens knew that the fourth stage of EU regulations on energy efficiency prohibits the further sale of conventional non-directional light bulbs. Just under 40 percent of survey respondents felt that they are roughly informed about possible alternatives, but would like more advice. Around 20 percent of survey respondents indicated that they know hardly anything at all about the topic. SSL Design PageTwo members login for more. Guests can view membership details.

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Commentary & Perspectives...

Get Ready for the Lux Wars
Tom Griffiths - Publisher

September 5, 2012...Up til now, the LED lighting industry has been fairly "source centric" in its messaging as it pushed forth the rising-efficiency story. In the last year or so, LEDs that top 100-120 warm white lumens-per-Watt (lm/W) have come down in price to join the mainstream "lumens per dollar" part of the industry value curve, which simply means that cost-effective LEDs, are now the most efficient man-made lighting emission source. (OLED folks may remain silent on this about their near-100% quantum efficiency thing until they can get more of the lumens out of those highly efficient layers). So now what are we going to be focusing on? Enter the lux wars.

While the lumens we all know and love are about the total amount of visible light emitted from a source (any source), Lux is the luminous flux hitting or passing through a specific space. Imagine our reference source being a luminaire that we'll call a flashlight (aka "torch") emitting 100 total lumens out of its lens in a typical cone pattern. If that precisely designed lens is shining on 1 square-meter of a big flat target, it is delivering 100 lux of illuminance. Move it further away along the cone shaped pattern such that the beam is now illuminating a 2 square-meter area, and you'll have those same 100 lumens, but they'll be spread out across twice as big an area, giving us a measure of 50 lux. For the most part, given the same mix of frequencies/quality of light, lux are what we really care about in our lit environment.

There are definitely some moves going on to shift the discussion more towards lux, as we've also done for a number of years in referencing an advantage of LEDs to deliver light where it is needed, and not where it's not. Beta LED, now part of Cree, did an excellent job telling that story in reference to their parking lot lighting projects, with great aerial photos showing nice even lighting across a property that stopped at the edges. So if the best a metal-halide fixture can do is get 80% of the lumens emanating from the omnidirectional source out of a fixture, and another 20% are scattered beyond the edges of the target zone, the math says that 64% were put to use for the task at hand. If we assume LEDs in a similar application have 90% optical efficiency (getting through their individual lenses), and that the virtually all of them go where we want, it works out that 10,000 metal halide lumens can be matched by something like 7100 LED-derived lumens.

It often goes a step further when we look at the actual distribution of the light from a typical omnidirection. Parking lots are also an easy visualization of that case. We've all seen the "hotspots" in some sort of focal area, then a band of fairly consistent light level outside that zone for a ways, then a fairly rapid fade off as you get further out. No one needs that hotspot in that type of application (it's a no-charge feature!), so what if you can take some lumens from the hotspot, and evenly distribute them across the rest of the target? In practical application, that can save another 10-15% from what's actually needed to do the job well. 6000 LED lumens vs. 10,000 from the incumbents.

This also extends to simply applying the lumens more judiciously. An easy-to-imagine scenario is a car-dealership, which we've all seen to be pretty much fully lit up all through the night. While that's handy during business hours, the point of the full-night lighting is merchandising. "Look at these shiny new cars here in the front row" and "look at all these cars we have in stock". You want the front row (street side) to "pop" and the rest of the lot to be evenly and visibly lit. But does the whole lot need to be evenly lit after hours? I tend to think not and the luminaire developers, presumably listening to the customers, seem to agree. Light the front row very brightly, with a sharp cutoff so that you see the cars and not the lights shining in your eye. Further back, light everything evenly and properly bright for business hours, then adjust that down later at night so that it is still secure and "lots of cars" but not glaring. The incumbents don't tend to dim all that conveniently and would be substantially challenged to do that in a smooth and gradual fashion when compared to LEDs. The net result could be an energy savings of 50% or greater without sacrificing the overall effect or quality of light. Add to that the elimination of the whole "relamping" thing, which in merchandising applications is typically done all at once, on a schedule that should avoid the point of noticeable lumen depreciation and other than sporadic failures, and you're talking about ROI's for an LED retrofit that may be as little as 2 years.

What will be tricky with the lux wars will be the fact that it can be difficult to interpret by simply comparing specs. While lumens were relatively easy (but comparatively less meaningful), lux is subjective to the application. Lighting designers will "get it" of course, but if the decisions are left to the more facilities-oriented folks, a number of the important subtleties can be missed without more education. Show and tell matters a lot, and even just decent pictures of installations can illustrate key concepts such as the smoothness of the distribution across the lit area. Of course education is pretty much the task of the LED lighting industry in general, isn't it?

 

 

 

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