Photobiological Safety Research Based on Modified LED Automobile Headlight
HUANG Ting
GUO Zhenning
LIN Jieben
ZHANG Jianing
LI Jianpeng
Abstract：In the article, we tested the photo-biological safety(the blue light hazard to retina, the thermal hazards to retina and the near ultraviolet radiation to eyes) of automotive head lamp including halogen lamp(Philips H7) and LED(LED Headlight 2S from German company named KEM).At the same time, we analyzed the result of experiments based on GB/T 20145-2006 The biological safety of light lamp and lamp system.In the experiments, we used the light color electricity comprehensive analysis system and OST-300 the optical radiation safety test system, measured the spectral characteristics of halogen lamp and LED lights respectively.Then, we analyzed the composition of spectral characteristics, afterwards, we measured the blue light hazard to retina, spectral radiance and spectral radiant intensity of illumination from halogen lamp and LED.And then we calculated the value of the thermal hazards to retina and the near ultraviolet radiation to eyes according to the scientific principles.The research results show that both the retina thermal damage and near ultraviolet harm are negligible.The LED''s blue light hazard reached 1 783 W·m-2·sr-1 which is far higher than the halogen lamp.And CRI (color rendering index) of LED headlight is 72.9 which is is far lower than the halogen headlight.Then, according to the results of the tests and the previous research results, in the view of LED''s problem that low CRI(color rendering index) and high blue light hazard, there have some corresponding improvement measures in this article which use white LED of low color temperature and high color rendering index.
Keywords：automobile headlampphoto biological safetywhite LEDsdetectionblue light hazardhealthy lighting
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 89-95 )