照明系统中配光元件反射-吸收损耗的计算  

Calculation of reflection⁃absorption loss of light distribution elements in illumination system

作　　者：康学亮[1] 车昕叡 雪瑞 王丽 张白[1] 韦先涛[3] KANG Xueliang;CHE Xinrui;XUE Rui;WANG Li;ZHANG Bai;WEI Xiantao(School of Electrical&Information Engineering,North Minzu University,Yinchuan 750021,China;School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China;School of Physics,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]北方民族大学电气工程学院,宁夏银川750021 [2]合肥工业大学机械工程学院,安徽合肥230009 [3]中国科学技术大学物理学院,安徽合肥230026

出　　处：《量子电子学报》2024年第2期257-268,共12页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(11564001);宁夏自然科学基金(2021AAC03214);北方民族大学中央高校基本科研业务费专项资金(FWNX02);北方民族大学研究生创新项目(YCX22124)。

摘　　要：在照明光学设计中,光通量利用率是配光元件的一个重要评价指标。基于菲涅尔公式,建立了配光元件反射-吸收损耗的理论模型,并探讨了其适用范围。利用该模型分别计算了自由曲面平凸透镜和全内反射透镜的反射-吸收损耗,并与软件仿真和实验实测的光通量损耗数值进行了对比。研究发现,该理论模型的计算数值与光学软件的仿真结果高度相符,点光源60°平凸准直配光透镜和全内反射透镜的透射率绝对误差分别为0.7%和0.14%,考虑装配误差影响之后,此数值与实验测量结果也基本匹配。利用本研究所建的反射-吸收损耗模型,在照明光学设计中,无需进行软件仿真和实验测试,即能快速而精确地预测出各类配光元件在各个光学表面上的反射损耗和材料吸收损耗,为配光元件的性能评价、结构选择和优化定型提供参考依据。The flux utilization rate of light source is an important evaluation index of light distribution elements in the illumination optics design.Based on Fresnel formula,a theoretical model for reflection-absorption loss of light distribution elements is established,and its applicable range is discussed.Using this model,the reflection-absorption loss of the free-form surface plano-convex lens and the total-internal-reflection lens are calculated respectively,and the results are compared with those obtained by software simulation and experimental measurement.It is found that the calculated values of the theoretical model are highly consistent with the simulated results of the optical software,and the absolute errors of the transmissivity of free-form surface plano-convex lens and total-internal-reflection lens with collecting angle 60°for point source are 0.7%and 0.14%respectively.In the other hand,considering the influence of the assembly error,the calculated values are also basically consistent with the experimental measurement results.Based on this research,it is indicated that by using the established reflection-absorption loss model,in the illumination optics design,the reflection loss on each optical surface and the material absorption loss of various light distribution elements can be predicted quickly and accurately without software simulation and experimental test.This provides a reference for the performance evaluation,structure selection and optimization of light distribution elements.

关 键 词：照明光学 反射-吸收损耗 二次光学设计 自由曲面 

分 类 号：O439[机械工程—光学工程]