10 May 2011

Cree demos record-efficiency 231lm/W white LED

LED chip, lamp and lighting fixture maker Cree Inc of Durham, NC, USA has reported what it claims is an industry-best efficacy record of 231 lumens per watt for a white power LED, significantly beyond Cree’s previous industry record.

The efficacy was measured using a single-die component at a correlated color temperature of 4500K. Standard room-temperature 350mA testing was used to achieve the results.

“It wasn’t long ago when 200 lumens per watt was considered the theoretical maximum efficiency for a lighting-class LED,” says John Edmond, Cree co-founder & director of advanced optoelectronics. “We broke that barrier in 2010 [with a 208lm/W white power LED announced that February], and have now achieved 231 lumens per watt,” he adds. “The innovation from our labs is the foundation for our industry-leading XLamp LED family.”

Cree says that the R&D result features advanced aspects of the same technology used in its XLamp white LEDs. The firm believes that higher-performance LEDs can enable new LED-based applications and drive down the solution cost of current LED-based designs. Cree notes that this level of performance is not yet available in its production LEDs.

Tags: Cree White LEDs

Visit: www.cree.com