Cree Sets LED Efficacy Records — Again
DURHAM, N.C., May 17, 2011 — LED lighting company Cree Inc. reported another industry-best efficacy record of 231 lumens per watt for a white power LED, outdoing its previous industry record of 208 lumens (See: Cree Passes LED Per Watt Milestone).
Cree reported that the LED efficacy was measured at 231 lumens per watt using a single-die component at a correlated color temperature of 4500 K. Standard room-temperature 350-mA testing was used to achieve the results.
"It wasn't long ago when 200 lumens per watt was considered the theoretical maximum efficiency for an LED. We broke that barrier in 2010 and have now achieved 231 lumens per watt," said John Edmond, Cree co-founder and director of advanced optoelectronics.
This R&D result features advanced aspects of the same technology used in Cree XLamp white LEDs. Cree believes higher-performance LEDs can enable new LED-based applications and drive down the solution cost of current LED-based designs. This level of performance is not yet available in Cree's production LEDs.
For more information, visit: www.cree.com