The light, color and electrical parameters of lighting LEDs, as well as their luminous efficiency and light decay trend, are closely related to the temperature of each corresponding operating point when the LED works and achieves a balance between heat generation and heat dissipation.

In particular, it is more closely related to the temperature of the LED junction. The article mainly describes the relevant standards for judging the quality of lighting LEDs through the detection of operating point temperature at home and abroad.

And summarizes the evolution process of detection technology, and introduces the detection instrument based on the author's actual work experience, hoping to communicate and discuss with readers, and work together to improve the quality of detection LED lighting.