In the first of a series of articles, Kevin Dowling explains the importance of standards for LED lighting and looks at the significant progress that has been made so far. ![]()
Chromaticity diagram for ANSI C78.377 In an era of rapid performance improvement, 2008 is likely to be remembered as the Year of LED Standards, which are a critical ingredient in the market use and adoption of LED lighting technology. Last year saw the publication of Several performance standards as well as guidelines that required the use of these standards — in effect, standards based upon standards. It is a good start, but only a start. However, many other standards are in process, and remarkable progress has been made.
Importance of standards
In many cases product specifications are not traceable to an authoritative reference, making all such data suspect at best, and disingenuous at worst. further, some manufacturers play specification games ; ; ; ; ; ; ; ; ; ; ; , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Market growths; adoptions and the results benefit both users and manufacturers. Thus, LEDs can also provide societal benefits in terms of energy saved and carbon footprints reduced. This chain of reasoning is not to be taken lightly. a “Wild West†of disorder and confusion.
Standards finalized in 2008
Chromaticity: ANSI C78.377-2008
"Specifications for the Chromaticity of Solid State Lighting Products" (see figure 1).
Luminous Flux: IESNA LM-79
“Electrical and Photometric Measurements of Solid-State Lighting Productsâ€
Lumen Maintenance: IESNA LM-80
“Measuring Lumen Maintenance of LED Light Sourcesâ€
Definitions: IESNA RP-16 Addendum A
"Nomenclature and Definitions for Illuminating Engineering"
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This article was published in the April 2009 issue of LEDs Magazine.
To read the full version of this article, please visit our Magazine page, where you can download FREE electronic PDF versions of all issues of LEDs Magazine.
You can also request a print copy of LEDs Magazine (available by paid subscription) and sign up for our free weekly email newsletter . About the Author Kevin Dowling is the VP of innovation at Philips Color Kinetics ( ) and has been Active in SSL for over 10 years. He founded and chairs the IES SSL Committee and the NEMA SSL Committee, and is a past Chairman of the Next Generation Lighting Industry Alliance.![]()
April 2009 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2004 2005 2006 2007 2008 2009 
Importance of standards
In many cases product specifications are not traceable to an authoritative reference, making all such data suspect at best, and disingenuous at worst. further, some manufacturers play specification games ; ; ; ; ; ; ; ; ; ; ; , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Market growths; adoptions and the results benefit both users and manufacturers. Thus, LEDs can also provide societal benefits in terms of energy saved and carbon footprints reduced. This chain of reasoning is not to be taken lightly. a “Wild West†of disorder and confusion.
Standards finalized in 2008
Chromaticity: ANSI C78.377-2008
"Specifications for the Chromaticity of Solid State Lighting Products" (see figure 1).
Luminous Flux: IESNA LM-79
“Electrical and Photometric Measurements of Solid-State Lighting Productsâ€
Lumen Maintenance: IESNA LM-80
“Measuring Lumen Maintenance of LED Light Sourcesâ€
Definitions: IESNA RP-16 Addendum A
"Nomenclature and Definitions for Illuminating Engineering"
+++++++
This article was published in the April 2009 issue of LEDs Magazine.
To read the full version of this article, please visit our Magazine page, where you can download FREE electronic PDF versions of all issues of LEDs Magazine.
You can also request a print copy of LEDs Magazine (available by paid subscription) and sign up for our free weekly email newsletter . About the Author Kevin Dowling is the VP of innovation at Philips Color Kinetics ( ) and has been Active in SSL for over 10 years. He founded and chairs the IES SSL Committee and the NEMA SSL Committee, and is a past Chairman of the Next Generation Lighting Industry Alliance.
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