LED standards published in the US 01 Jul 08
Two standards relating to LED chromaticity and photometric measurements have already been published in 2008, and more are in the pipeline. |
CALiPER Round 4 of SSL product testing shows mixed results 21 Feb 08
Further testing of SSL products by the DOE's SSL program shows a wide performance range and a continuing disparity between manufacturers' claims and actual test results. |
LED luminaire performance: changing traditions can set the right expectations 20 Feb 08
LED technologies can show radically different photometric performance and life when used in different application environments. Photometric data produced according to traditional testing standards are not very useful for LED luminaires, according to Nadarajah Narendran, Jean Paul Freyssinier, and Jennifer Taylor. |
LED luminaire performance: changing traditions can set the right expectations 03 Dec 07
LED technologies can show radically different photometric performance and life when used in different application environments. Photometric data produced according to traditional testing standards are not very useful for LED luminaires, according to Nadarajah Narendran, Jean Paul Freyssinier, and Jennifer Taylor. |
TECH NOTES: Illuminating evidence - a breakthrough in power LED lifetime data helps manufacturers build and deploy reliable lighting solutions 19 Nov 07
A graphical representation of lifetime in terms of both drive current and junction temperature provides the optimum data for designers, says Steve Landau of Philips Lumileds. |
LED safety and the evolution of international standards 25 Oct 07
For the purposes of LED safety analysis, newer standards use lamp-based rather than laser-based criteria. However, with continued improvements in LED performance, safety standards for LED are still evolving, according to Neil Haigh and Geoff Archenhold. |
Philips awarded NIST contract (corrected version) 17 Oct 07
Philips has received a federal contract to develop a spectrally-tunable light source that will help NIST investigate alternative metrics that might eventually replace CRI. |
Cal-Optics and Everfine to supply LED test equipment 26 Sep 07
Cal-Optics has partnered with Everfine, the world's largest producer of light and LED measurement equipment, to make products available in the US. |
DOE issues final Energy Star criteria for SSL products 14 Sep 07
As part of the US strategy to accelerate market introduction of LED-based products, these will now be able to obtain Energy Star certification from September 2008. |
LRC group provides guidance on under-cabinet and directional LED lighting 13 Jun 07
The Lighting Research Center has published two new ASSIST Recommends volumes to assist in the selection and evaluation of specific LED lighting products, writes Jennifer Taylor. |
UL launches safety standard for LED lighting products 23 May 07
Underwriters Laboratories is working towards a safety standard that will cover the sale of LEDs and LED fixtures in the North American market. |
Standards required for further penetration of solid state lighting
17 May 07
The solid-state lighting industry urgently needs standards to assist its growth and to avoid hype and negative reactions. The good news, says Kevin Dowling, is that standards work is proceeding rapidly in a number of directions. |
Hunter seeks realistic LED performance data 15 May 07
The keynote speaker at Strategies in Light did not hold back in his view that the LED industry needs to urgently address the inaccurate representation of LED performance in the industry. |
Lumileds presents new analysis of power LED reliability 04 May 07
A new method of looking at statistical data for LED lifetime and reliability should help bridge the gap between LED makers and lighting designers, says Lumileds. |
LED luminaires fall short in initial round of testing 28 Feb 07
LED luminaires have faired poorly in a pilot round of testing conducted within the U.S. DOE's Solid State Lighting (SSL) program. |
DOE releases draft Energy Star requirements for SSL luminaires 01 Jan 07
As part of its strategy to accelerate market introduction of LED-based luminaries, the US DOE is seeking to extend its Energy Star program to these products. |
