It was learned from the National Standards Committee that the two national standards for "Light Radiation Safety Requirements for LED Products for General Lighting" and "Measurement Methods for Optical Radiation Safety for LED Products for General Lighting" were issued by the General Administration of Quality Supervision, Inspection and Quarantine and the National Standards Committee on July 31. It will be implemented on February 1, 2018.
"Light Radiation Safety Requirements for LED Products for General Lighting" stipulates the optical radiation safety requirements for LED products for general lighting, establishes the general principles of optical radiation safety assessment and classification of optical radiation hazards for LED products, and gives light radiation safety protection for LED products. The guide for measures is applicable to the production, testing and use of various types of general lighting LED products with a primary emission wavelength of visible light (380 nm to 780 nm).
The "Measurement Method for Optical Radiation Safety of LED Products for General Lighting" specifies the optical radiation safety measurement method for LED products for general illumination, including the measurement conditions, requirements and methods. The blue light hazard assessment pre-screening evaluation process is proposed, which simplifies the evaluation process, clarifies the measurement and evaluation steps, ensures the standardization and consistency of measurement operations, proposes product identification specifications, and provides guidance for consumers to purchase and use LED lighting products. The main emission LED products of various types of general illumination are visible light (380nm~780nm).
According to the relevant personages of the National Technical Committee on Standardization of Optical Radiation Safety and Laser Equipment, gas discharge lamps, especially fluorescent lamps, have only entered the lives of ordinary people for more than 30 years. People in rural poverty-stricken areas have used them for a shorter period of time. Modern artificial lighting source. In recent years, a large number of photobiology and medical research have shown that modern illumination sources exhibit inconsistency and disharmony with human biological characteristics, posing a new threat to human health. In particular, the rapid development of LED light sources and their wide application in the field of general lighting have made LED lighting products with high power, high brightness and high color temperature enter thousands of households and some functional lighting places. Currently, mainstream blue light LEDs are used to excite yellow phosphors to produce white light, which is an indispensable part of the blue light.
However, blue light has the potential to penetrate the human lens to the retina, causing photochemical damage to the retina. Normal human retina has metabolic and self-repairing functions, so low-energy blue light radiation usually does not cause organic damage to the human eye. For high-brightness, narrow-beam sources, focusing the illumination source through the human lens and vitreous to the retina can cause acute photochemical damage to the human retina. Many ophthalmologists have reminded everyone through various ways to the harm of blue light to the retina, especially the damage effect of the macular area; more and more consumers are gradually recognizing the possible health risks of light radiation. The blue radiation hazard of LED lighting products has also attracted widespread attention from the public, but there is no optical radiation safety standard for LED products at home and abroad.
According to reports, LED products usually have high brightness and narrow beam characteristics. Therefore, when measuring, the incident aperture of the measurement system, the typical field of view, the position of the entrance pupil, and the magnitude transfer of the system will have a greater impact on the final measurement results. Based on the optical performance characteristics of LED products, the measurement methods of LED products proposed by this standard have detailed the factors, measurement steps and processes that affect the uncertainty of measurement results, so as to accurately determine the results. Sexuality and international consistency provide assurance.
For ordinary consumers, getting an LED lighting product with a logo of Class 0, Class 1, or Class 2 does not know what this level means, and it does not have any guiding significance for its purchase and use. It is mistaken that only products of class 0 can be used, and products of other grades cannot be used. According to the needs of China's industry, the standard issued this time proposes a method for assessing the safety distance. It can identify the safety distance of the product from the perspective of actual use, guide the user to purchase and safely use the product, and inform the user where to be. This product is used under conditions to guide the user to effectively avoid the danger of light radiation.
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