Comparison of Life Testing Standards for LED Lighting Products

Due to its high luminous efficacy, small size, low energy consumption, high reliability and long lifetime, LED has become the 3rd generation light source, after incandescent lamp and fluorescent lamp. In 2017, the LED market reaches a new high point of 653.8 billion RMB, and penetrates to new applications such as plant and animal cultivation, visible light communication, medical and health care, etc. Conventional test methods are no longer suitable for LED luminaires. LED modules and luminaires lifetime test follows US DoE Energy Star, IES LM-79, IES LM-80, IES LM-82, IES LM-84, IES TM21, IES TM28 etc. which require a 6000hrs test duration. This has affected the rapid development of the LED application industry, so it is particularly urgent to develop and select appropriate accelerated life test methods for LED products. This paper compares three kinds of fast/accelerated life testing methods for LED products, summarizes the advantages and disadvantages of each method, and provides some choices for life testing of LED products.