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
L Prize Winner Completes 25,000 Hours Of Testing
July 7, 2013

The L Prize®-winning lamp from Philips Lighting North America has shown no falloff in light output after 25,000 hours of continuous lumen maintenance testing.

When the prize was awarded in August 2011, DOE predicted the Philips lamp would achieve lumen maintenance of 97.1% at 25,000 hours, based on the 7,000 hours of testing that 200 samples had already undergone in a specially constructed high-temperature (45°C) facility. Even though this far exceeded the competition's 70% requirement, DOE's intention was to continue testing the lamp for an extended period.

When 25,000 hours of operation was reached on April 29, none of the lamps had failed, and the average lumen maintenance of the samples was 100% of the initial output. What’s more, the color was stable, with the chromaticity change on the International Commission on Illumination (CIE) 1976 (u’,v’) color diagram found to be less than 0.002 after 25,000 hours–well within the competition’s tolerance of 0.004 at 7,000 hours of operation. These results show that well-designed LED integral lamps can operate very reliably over long periods of time, with excellent lumen and chromaticity maintenance.

Download a PDF of the updated lumen maintenance report, or go to http://www.lightingprize.org/ to learn more.
 

Trans
Banners
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