一种球形光度计等价光谱透射比的测量方法  

A Measurement Method for Equivalent Spectral Transmittance of a Spherical Photometer

作　　者：赵伟强[1] 刘慧[1] 闫劲云 苏颖[1] ZHAO Weiqiang;LIU Hui;YAN Jinyun;SU Ying(National Institute of Metrology,Beijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《照明工程学报》2024年第2期1-4,共4页China Illuminating Engineering Journal

基　　金：国家重点研发计划坎德拉量子化复现关键技术研究(2023YFF0612503)。

摘　　要：本文提出一种球形光度计等价光谱透射比的原位测量方法。使用球形光度计测试光源总光通量,因标准灯与被测灯的光谱差异进行光谱失配修正,等价光谱透射比是计算该修正的输入参数之一。为避免对积分球上的毛玻璃和球壁上的涂层样品拆卸安装,使用原位方式,通过比较毛玻璃漫透射出口处和积分球中心标准灯的光谱差异,计算等价光谱透射比的值。应用该方法,使用球形光度计测试白、红、绿、蓝四色LED样品的总光通量,与分布光度计的测试结果比较,实验数据显示两者在不确定度内一致,验证了所提出的等价光谱透射比测量方法可行性。This paper proposes an in-situ measurement method for equivalent spectral transmittance ratio of a spherical photometer.While using a spherical photometer to measure the total luminous flux of the light source,spectral mismatch correction is required due to the spectral difference between the standard lamp and the tested lamp.The equivalent spectral transmittance ratio is one of the input parameters for calculating this correction.To avoid disassembling and installing of the cosine corrector glass and the coating sample,an in-situ method is used to measure the equivalent spectral transmittance by comparing the spectral differences between outlet spectral irradiance and the standard lamp at the center of the integrating sphere.Applying this method,a spherical photometer is used to test the total luminous flux of white,red,green,and blue LED samples.The results are compared with those obtained from a goniophotometer.Experimental data showed that both results are consistent within the uncertainty range,validating the feasibility of the proposed equivalent spectral transmittance ratio measurement method.

关 键 词：球形光度计 积分球 总光通量 等价光谱透射比 光谱失配修正 

分 类 号：TB96[机械工程—光学工程]