Cree, the US-based manufacturer of LEDs, LED chips and lighting fixtures, have announced a white LED containing a 1 x 1 mm chip with efficacy of 161 lm/W (the highest value reported in the industry to date).
The device has an output of 173 lumens, and a CCT of 4689K. The tests were conducted under standard LED test conditions at a drive current of 350mA, at room temperature.
Although not available in production, this level of performance indicates LED technology has still not reached its peak.
Cree’s announcement follows similar results in recent months from Philips Lumileds and Osram Opto Semiconductors, previously reported in Driving Vision News.
Lumileds’ results were 140.1 lm/W and 138 lm, while Osram’s were 136 lm/W and 155 lm, for comparable devices.