眼光路光学器具光危害的系统评价方法研究

Research on Systematic Evaluation Method for Light Hazard of Optical Apparatus in Ocular Optical Path

基于光辐射危害的算法,建立眼光路中外加光学器具的光辐射危害降低量分析基础。通过引入起比较作用的原器具概念,建立相对光辐射危害降低量和绝对光辐射危害降低量的概念和表达式,以及两者间的换算关系。根据人眼瞳孔的限光机理,推导了人眼瞳孔前和瞳孔后组织各自的光辐射危害降低量算法,介绍了实际应用方法;通过视觉应用分析,提出暗光效增率的概念来评价视明度水平,同时在暗光效增率的表达式基础上导出实用算法;通过光源变换分析,得出了运用光源显色性评价方法可评价色觉水平的结论,同时给出了评价显色性的显色指数Ra应用标准。最后以举例形式说明,该方法可实现系统评价目的。

Based on light radiation hazard algorithm,the analytical basis for light radiation hazard reduction of plus optical apparatus in ocular optical path is formed.The original apparatus concept for comparing is introduced to formulate the concepts and expressions of relative light radiation hazard reduction and absolute light radiation hazard reduction,as well as the conversion between them.With the light limited mechanism of pupils,respective light radiation hazard reduction algorithm of tissues forward and rearward pupil is elicited and practical applications are introduced.By visual application analysis,the increasing rate of scotopic luminous efficiency can evaluate the level of visual lightness,and practical algorithm on the basis of increasing rate of dark luminous efficiency expression is elicited.By source changing analysis,light source color rendering evaluation method can evaluate the level of color vision,and the application standard of rendering index Ra for evaluating color rendering is given.The last part shows that this method can realize the purpose of systematic evaluation.