近场分布式平面光源光强测试方法  

Luminous Intensity of Plane Light Source Based on Near-Field Distributed Photometry

作　　者：胡少杰 王洪远 何泽浩 朱巧芬 曹良才[2] Hu Shaojie;Wang Hongyuan;He Zehao;Zhu Qiaofen;Cao Liangcai(School of Mathematics and Physics Science and Engineering,Hebei University of Engineering,Handan 056038,Hebei,China;Department of Precision Instrument,Tsinghua University,Beijing 100084,China)

机构地区：[1]河北工程大学数理科学与工程学院,河北邯郸056038 [2]清华大学精密仪器系,北京100084

出　　处：《光学学报》2024年第3期147-154,共8页Acta Optica Sinica

基　　金：国家重点研发计划(2022YFF0705500)。

摘　　要：对近场分布式光度测量方法及测量机理进行研究,基于自主搭建的近场光源发光特性测量装置采集平面光源不同方向的亮度图像,分析了近场光度参量之间的转换关系及亮度数据处理方法,最终实现了近场分布式平面光源空间光强分布测量。通过构建平面光源发光模型,基于光度学和几何光学原理分析发光平面各个方向的光线分布,完成对光源不同方向的发光状态表征。与远场测量相比,所提近场分布式测量方法结果与远场配光曲线吻合良好,在所采用成像式亮度计亮度相对误差优于6.51%的情况下,所测得的光强相对误差小于8.38%,0°配光曲线匹配指数高达98.33%,验证了所提方法在近场光度测量中的有效性。Objective People's demand for light sources contains not only efficiency,energy conservation,and environmental protection,but is shifting towards healthy and comfortable lighting quality,which puts higher requirements on the measurement technology for luminescence characteristics of the light sources.At present,there are two main methods for measuring the luminescence characteristics of light sources,including far-field and near-field distributed photometric measurements.The far-field distributed photometric measurement based on a point light source model employs a single point photometric detector for spherical scanning to obtain the light intensity,which makes it difficult to accurately demonstrate the luminous information in the near-field distance.The near-field photometric measurement utilizes luminance images from different directions to build a near-field source model.By the conversion of photometric parameters and the processing method of luminance data,the luminescence characteristics of light sources can be characterized,and characteristic information such as the origin and propagation direction of light sources can be obtained.Although the nearfield photometric measurement model is more complicated,it can more finely and completely characterize the luminescence characteristics of light sources.However,facing the application requirements for accurate luminescence characteristic measurement of light sources,the development of domestic near-field distributed photometric measurement systems is still in preliminary stages.Meanwhile,some systems have limitations in measurement size or measurement accuracy,which makes it difficult to characterize the luminescence characteristics of light sources.Therefore,by studying the near-field photometric measurement method and its measurement mechanism,we measure the luminous intensity distribution of a plane light source based on the self-developed near-field photometric measurement device.Methods The spatial distribution of luminous intensity information of a plane li

关 键 词：测量 分布光度计 近场分布式光度测量 成像式亮度计 光强 配光曲线 

分 类 号：O432[机械工程—光学工程]