As the LED industry has become more mature, LED makers have been laying more emphasis on the chip quality. Due to the great amount of backlight applications in the LED industry and manufacturers’ increasing focus on the uniform light distribution, a lot of LED makers have encountered optical measuring problems. The field of LED lighting is now in dare need of better optical measuring equipment: with the increasing orders from Europe, America and Japan, clients not only focus on luminous efficacy but also stress more on the light uniformity, fidelity and color rende...