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How Long Will it Last?: Predicting LED System Life Based on the Application

  • Session Number:T2 S3 P1
Wednesday, March 01, 2017: 3:30 PM - 4:00 PM

Speaker(s)

Co-Author
Dinusha Thotagamuwa
Graduate Student, Lighting Research Center
Rensselaer Polytechnic Institute
United States
Speaker
Nadarajah Narendran
Director of Research, Lighting Research Center
Rensselaer Polytechnic Institute
United States
Co-Author
Oshadhi Eshwarage
Graduate Student, Lighting Research Center
Rensselaer Polytechnic Institute
United States
Co-Author
Xi Mou
Graduate Student, Lighting Research Center
Rensselaer Polytechnic Institute
United States
Co-Author
Yi-wei Liu
Lead Research Specialist, Lighting Research Center
Rensselaer Polytechnic Institute
United States

Description

“How long will it last?” is a common question in the LED lighting product segment, one that has not had a definitive answer despite the availability of industry standards and reporting requirements. Presently, the industry practice is to use the estimated LED package lifetime, L70, as the de facto system life. However, there are more components in an LED product than just the LED package, and the failure of any component will result in product failure. Further, LED life is dependent on the type of environment where the system is installed and on the system’s pattern of use, and these can vary from one application to another. Therefore, it may be foolhardy for manufacturers to make life claims for their products, yet consumers insist upon it. This presentation will describe a long-term series of life-test studies designed to predict LED product lifetime at any given environment temperature and use pattern.

Handouts