Why should reliability test LED lamps
LED commercial lighting such as COB LED flood light has developed for less than 15 years, the technology is still evolving and improving . And the manufacturers is also quite different from the epitaxial and the chip to the package technical level, the quality of different batches of LED light especially the COB LED flood light the same manufacturer manufactures is uneven . Coupled with the application of product design and the use of different methods , the life of life LED lighting including the COB LED flood light entirely theoretically doesn’t reach 50,000 hours . Therefore, improving the reliability of the LED is the priority of researching LED lightparticularly the COB LED flood light. And researching the reliability of the LED is to improve the premise and foundation of its reliability and service life. Reliability of the LED is not only the root cause of the failure mechanisms of the LED on the analysis , and then proposing the improvement program from the design, technology and the use and other aspects , but also providing the reliability of LED lighting products including the COB LED flood light with a comprehensive assessment and providing screening and product quality management basis for LED Early failure, therefore , the research on LED reliability has a very important academic value and practical value either for LED scientific or LED industry.
2010 LED lighting technology roadmap of U.S. Department of Energy (DOE) Solid State Lighting product has also regarded the related evaluation and testing technology of enhanced reliability testing and accelerated life testing as an important research direction in recent years , and access to U.S. research institutions. Cree , Philips and other lighting giants have invested enormous human and material resources to carry LED reliability studies. the Chinese Ministry of Industry , Science and Technology , Country Semiconductor Lighting Project R & D and Industry Alliance (CSA), Guangdong Provincial Science and Technology Department has also invested a lot of money to increase the support and research the reliability of COB LED flood light and other LED lighting products in recent years,. Many universities, research institutions, standards consortium are ready to propose a plan to develop LED reliability and the standard of accelerated life testing, but because of the lack of reliable research, various testing and certification still currently energize the LED lamps in the normal working state when evaluating the of life LED lamp such as the COB LED flood light , and then measuring the light fades.