准直照明系统中光源参数对其性能的影响分析  

Analysis of Influence of Source Parameters on Performance of CollimatingIllumination System

作　　者：康学亮 任婷婷 葛瑞婷 石成相 王丽 张白[1] Kang Xueliang;Ren Tingting;Ge Ruiting;Shi Chengxiang;Wang Li;Zhang Bai(School of Electrical&Information Engineering,North Minzu University,Yinchuan 750021,Ningxia,China;School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,Anhui,China)

机构地区：[1]北方民族大学电气信息工程学院,宁夏银川750021 [2]合肥工业大学机械工程学院,安徽合肥230009

出　　处：《激光与光电子学进展》2023年第21期279-286,共8页Laser & Optoelectronics Progress

基　　金：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);国家自然科学基金(11564001)。

摘　　要：尽可能地增大出射光强,提高光通量利用率,是准直照明系统二次光学设计的研究目标。分别针对纯折射型和全内反射型的准直照明系统,研究了光源参数对其照明性能的影响,从理论上推导了系统出射光强、光通量利用率与光源出射度和配光曲线指数之间关系的表达式,并进行了实验验证。研究结果表明,系统出射光强与光源出射度成正比。光源配光曲线指数较小时,相比纯折射型准直照明系统,全内反射型准直照明系统的光通量利用率更高、出射光强更大、照明范围更广;但当光源配光曲线指数较大时,纯折射型准直照明系统具有更大的出射光强和更优的光斑陡边性。该结论可为准直照明系统二次光学设计中光源参数与配光元件结构的匹配优化提供理论依据。The objective of the secondary optical design of a collimating illumination system is to increase the outgoing light intensity and improve flux utilization.In this study,the influence of the source parameters on the illumination performance of pure-refraction-type and total-internal-reflection-type collimating illumination systems are investigated.The expressions for the relationship between the system’s outgoing light intensity,flux utilization,source luminous exitance,and light distribution curve index are derived theoretically and verified by experiments.The results show that the system’s outgoing light intensity is proportional to the source luminous exitance.For the total-internal-reflection-type collimating illumination system,a small light distribution curve index leads to a higher light flux utilization,larger outgoing light intensity,and wider lighting range compared to those of the pure-refraction-type collimating illumination system.In contrast,a large light distribution curve index leads to a larger outgoing light intensity and better spot slope in the purerefraction-type collimating illumination system.This conclusion can provide a theoretical basis for matching and optimizing the source parameters and light distribution element structure in the secondary optical design of collimating illumination systems.

关 键 词：准直照明 二次光学设计 光源参数 出射光强 光通量利用率 

分 类 号：O439[机械工程—光学工程]