基于Tracepro的微棱镜反光膜正入射无效光分析  

Normal Incident Invalid Light of Micro Prism Reflective Sheeting Based on Tracepro

作　　者：皮钧[1] 商开 

机构地区：[1]集美大学机械与能源工程学院,福建厦门361021

出　　处：《光子学报》2014年第4期51-56,共6页Acta Photonica Sinica

基　　金：国家自然科学基金(No.51175225);福建省工业科技重点项目(No.2013H0031)资助

摘　　要：为了提高反光膜的逆反射率,对正入射时微棱镜反光膜的无效光特性进行了研究.利用几何光学原理对单个角锥的无效光出射方式进行了分析,得到了单个角锥无效光的出射特性.在单个角锥的基础上,进一步分析了角锥阵列中无效光的传播特性,发现部分无效光能完成逆反射.分析了无效光在角锥阵列中的反射机理及无效光反射率随角锥阵列底厚变化的规律,利用Tracepro软件进行了仿真验证,得到单一无效区逆反射率变化曲线及小阵列逆反射率变化曲线.仿真结果证明了分析的正确性及底厚对无效光的重要影响,并给出了合理设计角锥棱镜阵列形状及底厚的建议,为提高微棱镜逆反射率、合理设计角锥棱镜底厚提供了理论依据.In order to improve the retroreflctance of the retroreflect sheeting,the properties of invalid light in micro corner cube prism were studied theoretically.By using the theory of geometrical optics,the outgoing way of invalid light in single cube was analyzed,and the properties of invalid light in single cube corner were given.Based on the single cube,the characteristics of invalid light of cube array were studied,the result that a part of invalid light could turns to effective light was found.The reflection principle,and variation law with the bottom thickness of invalid light which in corner cube array were analyzed.Testing and verifying by the optical software Tracepro,the retroreflection curve of single invalid area and small array were obtained.The analysis and the importance of corner array thickness on invalid light were proved by the simulation results.With practice,suggestions of design corner array were given.The obtained results provide theoretical foundations for improving retroreflection ratio of the micro prisms and reasonable design of micro prisms bottom thickness.

关 键 词：几何光学 微棱镜阵列 无效光线 底厚 逆反射率 

分 类 号：O435.1[机械工程—光学工程]