Luminous flux attenuation is a key indicator to judge the life of LED. The luminous flux maintenance rate of LED lighting products is defined as the end of LED lighting products by energy star (ES) to be below 70%. American Energy Star proposed to measure the luminous flux maintenance rate of 6000 hours at 25 ℃± 1 ℃ and infer the life of LED lighting products (the luminous flux maintenance rate of 6000 hours is not less than 91.8%). Compared with the development of LED lighting technology and the speed of product upgrading, 6000 hours (or more) test time is still too long to meet the requirements of the rapid development of the industry. It is very important to develop a fast reliability test method for life evaluation of LED lighting products. In order to solve this problem, the State Key Laboratory of semiconductor lighting joint innovation spent two years of research and formulated the "csa020led lighting"
