Nichia develops record 150lm/W white LED
Japan’s Nichia Corp has developed a lamp-type white LED (part no. NSPWR70) with an efficacy of 150lm/W (a luminous flux of 9.4lm) and a color temperature of 4600K at a drive current of 20mA in the lab. The efficacy is 1.7 times that of a three-wavelength fluorescent lamps (90lm/W), 11.5 times that of an incandescent lamp (13lm/W) and even better than a high-pressure sodium lamp (132lm/W), which is regarded as the best possible efficacy light source in the conventional market. In March Nichia developed 100lm/W white LEDs (and shipped samples in August). In June rival Cree reported a white LED chip delivering 131lm/W at 20mA, then in November Nichia raised the record to 138lm/W. Nichia’s 150lm/W LED has been developed sooner than the 2007 timescale targeted on its development roadmap. The product release has not yet been scheduled for commercial release.
With frame
7.1.1 Products, Market, Materials, and Technologies