手机蓝光危害的评价方法与防护有效性分析

Effective Measurement and Protection for Blue Light Hazards from Mobile Phones

为了介绍蓝光危害的有效影响因素。首先,阐明蓝光加权辐亮度为LED照明产品蓝光危害的评价指标;然后,分别采用测量光谱辐亮度和蓝光危害加权函数、亮度和蓝光危害效能对蓝光加权辐亮度进行计算;最后,选取4款不同型号手机为研究对象,搭建实验平台,对不同手机屏幕的蓝光危害进行测量和评估,并测试分析了市场上流行的防蓝光膜产品的防蓝光能力。结果表明,两种不同方法测量的蓝光加权辐亮度L_(B)有一定差异,但是十分微小;4款手机所产生的蓝光危害都在国家标准规定的豁免级别,不需要一些特殊的防护;实验所选的防蓝光膜确实可以起到一定的防蓝光作用。研究成果能够为制定手机产品蓝光限值相关标准提供指导。

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 L_(B) 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.