In order to introduce the effective influencing factors of blue light hazard,firstly,the blue light weighted radiance is clarified as an evaluation index for blue light hazards in LED lighting products.Then,the blue light weighted radiance is calculated using two different methods:measuring spectral radiance and blue light hazard weighting functions,as well as brightness and blue light hazard efficacy.Finally,four different models of smartphones are selected as research subjects,an experimental platform is constructed,and the blue light hazards of different smartphone screens are measured and assessed.Additionally,the blue light protection capabilities of popular anti-blue light films on the market are tested and analyzed.The results show that there is a certain difference,but very small,between the blue light weighted radiance LB measured by the two different methods;the blue light hazards produced by the four smartphones are all at the exempt level specified by national standards,and do not require special protection;the selected anti-blue light films do indeed provide a certain level of blue light protection.The research findings can provide guidance for the establishment of standards related to blue light limits in mobile phone products.
关键词
手机/发光二极管/蓝光危害/蓝光加权辐亮度
Key words
mobile phone/light-emitting diode/blue light hazards/blue light weighted radiance
维普
万方数据