According to the European Union issued for laser products (including LED) of IEC/EN62471 test standards, as well as the China national standard GB/T20145 the biological safety of light – 2006 lamp and lamp system, blu-ray retinal damage can be divided into four kinds: no dangerous risk, low risk category (1), (2), high risk (3 classes). In accordance with the provisions of the relevant international, if manufacturers provided shows that the radial brightness of lamps and lanterns is a dangerous class or low class (1), the certification body can accept this kind of LED lamps and lanterns, and don’t think its in normal circumstances will produce light biological risk.
If the radial brightness belong to 2 or 3 class of lamps and lanterns, didn’t tell mark cannot be used directly. On May 13th at the 7th Shanghai international & new energy lighting on the BBS of new light source, from academia, industry, medical experts reached basic chord, the main conclusion is that proper use of qualified plain white LED lighting products, to the human eye is the complete security. Appropriate blue tones the human circadian rhythms in the 7th Shanghai international & new energy lighting on the BBS of new light source, preparations of experts have reached such resonance, blue light is the white light of the basic ingredients.
With sunlight as well as traditional light source, the same white LED also contain a blue light. Appropriate blu-ray is not only necessary to ensure the color of light source function, can also to the human circadian rhythms has tonic effect. Blue light for retinal damage mainly by wavelength is 400-500 nm due to excessive radiation. All kinds of light source and solar spectrum calculated data and the domestic and foreign authoritative laboratory measurement results show that the blu-ray content of white LED light source color temperature is not higher than the same under the fluorescent lamp and metal halide lamp and other traditional light source and light; White LED light on the retina of the amount of blue light irradiation and fluorescent lamp and metal halide lamp and other traditional light source are similar, belong to the 0 and 1 class security lighting products