The blue light hazard of LED has always been controversial and has become a limiting issue for the promotion and application of LED lighting products, affecting consumer confidence in the market. In the eighth revision process of IEC 60598-1 "Luminaires Part 1: General requirements and tests", the emphasis was placed on the identification requirements for the blue light hazard of LED lamps. This standard is a basic requirement for lighting fixtures and is referenced by most countries and regions around the world. At present, the basic standard in the IEC standard system that involves the photobiological hazards of lighting products is the IEC 62471 series standard. Due to the involvement of LED lighting products in the product chain of LED chips, LED packaging, LED modules, and LED lamps, conducting retinal blue light hazard assessment on LED lighting products at various product stages will bring a lot of repetitive work. Therefore, IEC Technical Committee IEC/TC34 has published a technical report IEC/TR 62778:2014, The purpose is to evaluate the blue light hazard of LED light sources and lamps using IEC 62471 1. Standards and Implementation Dates for Blue Light Hazard Assessment
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