left shadow main shadow main shadow
main shadow
Ld logo
Professional Ligting top_banner
Home top navigation Jobs/Events/News top navigation Catalogs top navigation Manufacturers top navigation Lighting Products top navigation Newsletter Sign-Up top navigation Apps_Blogs top navigation Lighting Feeds
Subpage Top Grad
Indoor Lighting
Left Navigation
Outdoor Lighting
Left Navigation
LED Lighting
Left Navigation
Ballast/Transformers
Left Navigation
Controls
Left Navigation
Lamps/LED
Left Navigation
Emergency/Exit
Left Navigation
Site Sponsors
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Sponsors Images
Industry News
DOE Publishes CALiPER Report On The Photometric Testing Of White-Tunable LED Luminaires
September 28, 2015

The U.S. Department of Energy's CALiPER program has released Report 23: Photometric Testing of White-Tunable LED Luminaires, which is the first in a planned series of investigations on color-tunable LED luminaires. The main goal of the new study was to understand the amount of testing required to characterize a white-tunable LED lighting product. In this case, determining a sufficient protocol required more extensive testing than would be feasible for widespread use. Eight white-tunable luminaires were tested at dozens of points covering the range of color tuning (CCT) and dimming (luminous intensity).
 
The report focuses on the full-intensity measurements, which were typically at 11 color set points covering a range of CCTs, and reveals substantial variation in input power, lumen output, efficacy, and Duv over the color-tuning range for many of the products, which would not be captured with only a few test points. The results show that future test procedures will likely require at least five to seven measurement points to provide a reasonable characterization. The increase in testing burden on manufacturers could potentially be mitigated by specifying a relatively brief measurement stabilization process between readings at different settings, rather than requiring a lengthy warmup period between readings.
 
The report raises a number of questions about existing test methodology and its application to this category of products, which will require further discussion and consideration in the near future. For a closer look at the findings, download the full report.
 

Trans
Banners
Banners
Trans
Trans
Main Shadow Right
Indoor Lighting  |   Outdoor Lighting  |   LED Lighting  |   Ballast/Transformers  |   Controls  |   Lamps/LED  |   Emergency/Exit  |   Manufacturers  |   Lighting Products  |   Events  |   Jobs  |   Industry News  |   New Catalogs  |   Site Map  |   Advertising Information
LIGHTDIRECTORY - LightDirectory.com, P.O. Box 795, Oswego, IL 60543.
Trans