Power LED light flux maintenance life prediction

This paper mainly introduces the prediction model of LED light output life, introduces the basic principle of mathematical statistics and uses the linear regression formula to analyze and interpret the LM-80 report and LED lumen maintenance life prediction map. It is revealed that the prediction of LED light output life is based on the mathematical statistics of at least 6000h test, which has certain practical significance for LED reliability research.

As a new type of light source, GaN-based LEDs have developed rapidly in recent years. According to the National Bureau of Statistics, the number of street lamps in the country is about 90 million baht. If you calculate 5,000 yuan per street lamp, the entire market will be close to 500 billion. Although GaN LED lighting has many advantages such as energy saving, environmental protection, high efficiency and long life, its reliability research is still lacking. As a light source, LEDs should be comprehensively evaluated not only in terms of light efficiency, but also in terms of color temperature and color rendering. Only light effects are used, regardless of color temperature and color rendering index. The same is true only for light effects, and the lumens that do not speak light output are also of no practical significance. The theoretical life of LED is 100,000 hours. If the life test under normal normal stress is still used, it is difficult to make a more objective evaluation of the life and reliability of the product. How to scientifically predict the lifetime of LED light flux and ensure LED The reliability of use requires not only the establishment of a predictive model, but also the need to guarantee a certain test time, not rushing for success, but to study and experiment with meditation and scientific prediction.

Full-text download: Power LED light-pass maintenance life prediction

[Edit: Vessel]