LEDs Magazine July/August 2010 issue (MAGAZINE)

The July/August issue is available on our website.

Content Dam Leds En Articles Print Volume 7 Issue 8 Features Leds Magazine July August 2010 Issue Magazine Leftcolumn Article Thumbnailimage File

+++ Cover +++

Accent and cove lighting in the Red Rock Casino in Las Vegas has utilized AC-LED lamps from Lynk Labs, which are a simple retrofit for the 12 VAC infrastructure.


+++ Features +++

TECH VIEW: LIGHT AT NIGHT
Debate continues over the impact of light at night on human health
Over the course of the past year, the debate over artificial light at night and its impact on circadian rhythms and human health has intensified.



CONFERENCES: CELMA & ELC FORUM
CELMA and ELC joint forum represents views of European lighting industry
Improvements in goniophotometer engineering can increase the throughput of solid-state lighting test laboratories without compromising the accuracy of measurements, writes JENNIFER LEWIN.



Evgmanufacturing
LED MANUFACTURING
Tighter collaboration is essential for driving the high-brightness LED industry roadmap
The lack of standards in LED manufacturing makes it difficult for LED makers to change their process flows, while equipment suppliers are required to supply highly-customized tools, says THORSTEN MATTHIAS.



Lightfairintnl
SHOW REPORT: LIGHTFAIR INTERNATIONAL
Lightfair shows latest in LEDs
Were one to have walked into the Lightfair International (LFI) exhibit hall on May 12 with no prior knowledge about the event, the impression would have clearly been that the show was focused on LEDs. Indeed the event featured the latest LED technology ranging from LED chips to the latest in LED-based luminaires.



Leddriversweaklink
DRIVERS
Well-designed LED drivers are no longer the weak link
When correctly designed, LED drivers deliver strength and value to the entire LED lighting ecosystem, as ARYE SCHREIBER and JOHN DALY explain.




Thirdpartytesting
TEST+MEASUREMENT: LUMINAIRE TESTING
Accurate third-party testing improves consumer confidence in Energy Star program
Improvements in goniophotometer engineering can increase the throughput of solid-state lighting test laboratories without compromising the accuracy of measurements, writes JENNIFER LEWIN.



TECH VIEW: COLOR QUALITY
Search continues for replacement for Color Rendering Index
Color-rendering index (CRI) is widely used as a standard for assessing the color quality of white-light sources. However, due to various shortcomings with this 40-year-old metric, particularly with regard to white LEDs, various alternatives are being discussed and promoted.



Lightingcontrolsefficiency
LIGHTING CONTROLS
Adaptive controls add to LED efficiency
LEDs may offer a path to more efficient lighting in many different applications, and adaptive control technology significantly stretches the efficiency gain, says MAURY WRIGHT.



Assemblyinterconnectsimage

ASSEMBLY + INTERCONNECTS
SMT assembly process requirements dictate choice of interconnects for LED-based PCBs
Assembling LED-based PCBs for solid-state lighting applications requires careful choice of interconnect technology so that the products are compatible with automated SMT processes, explains LUKAS MUTH.



Dimmableretrofitlamps

DESIGN FORUM
Active PFC driver design enables dimmable retrofit lamps
Designers of LED-based solid-state lighting (SSL) retrofit lamps face thermal and power challenges as well as the need to work with legacy dimmers, but new driver topologies enable reliable designs says PIERO BIANCO of Maxim.



Lastwordjuly2010

LAST WORD
Don’t put all your eggs in one basket: LEDs not all they're cracked up to be?
Although LED lighting is proving to be useful in many applications, RON DAVIS, a marketing consultant with Vu1 Corporation, believes the industry should continue to consider other lighting options.




+++ Columns/departments +++


COMMENTARY
European and global efforts promote SSL

NEWS + VIEWS

  • LED light for World Cup arenas
  • Cree and Philips sign LED licensing agreement
  • TMG suppliers increase capacity to serve LED market
  • DOE recommends new approach to LED luminaire lifetime ratings
  • EPA clarifies Energy Star SSL test accreditation requirements
  • Osram improves red, green LED performance

FUNDING + PROGRAMS

  • GE retrofit LED lamp wins UK Energy Saving Trust approval
  • EC to support LED lighting demonstrations
  • Gateway projects continue LED evaluation

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