2010 Volume 94 Issue 4 Pages 233-239
LED and an OLED are rapidly gaining ground throughout the world as weapons for the fourth lighting revolution. As we look at current LED products, however, there are too many products that are not worthy of the lighting revolution and nothing but the replacement of conventional lightings. To realize the true lighting revolution, each institute on lighting should thoroughly pursue how lighting can be innovated with LED. Thus, we have to get back to lighting application, optical design, photometry, and colorimetry, when we design the LED fixture.