渐晕对红外光学系统光谱透过率测量的影响  

Influence of vignetting on spectral transmittance measurement of infrared optical system

作　　者：吴逸平 金尚忠 窦苡 李四维[2] 王学新[2] 胡铁力[2] 何玉兰[2] 俞兵[2] 张云龙[2] 尤越 WU Yiping;JIN Shangzhong;DOU Yi;LI Siwei;WANG Xuexin;HU Tieli;HE Yulan;YU Bing;ZHANG Yunlong;YOU Yue(College of Optical and Electronic Science Technology,China Jiliang University,Hangzhou 310018,China;Primary Optical Metrology Station of National Defense Science and Technology Industry,Xi'an Institute of Applied Optics,Xi'an 710065,China)

机构地区：[1]中国计量大学光学与电子科技学院,浙江杭州310018 [2]西安应用光学研究所国防科技工业光学一级计量站,陕西西安710065

出　　处：《应用光学》2024年第6期1238-1244,共7页Journal of Applied Optics

基　　金：Y2352红外光学系统光谱透过率校准技术项目。

摘　　要：在基于回返法的红外光学系统光谱透过率测试系统中,光阑等元件的位置在测量时会对红外镜头测量光谱透过率造成影响。针对这一问题,通过建立渐晕模型,对测试系统的测量段光束的渐晕进行了分析,推导出光阑等元件放置在不同位置处产生的渐晕公式。实验结果表明,保持空测和实测的相对渐晕一致,可以有效减小渐晕变化对红外镜头透过率测量的影响。In the infrared spectroscopic transmittance testing system based on the retro-reflective method,the position of the components such as aperture will affect the measurement of spectral transmittance of the infrared lens during measurement.To address this issue,a vignetting model was established to analyze the vignetting of the measurement beam in the testing system,and the vignetting formula generated by aperture and other components placing at different positions was derived.Experimental results show that maintaining the consistency in relative vignetting between the aerial and actual measurements can effectively reduce the effect of vignetting variations on the measurement of spectral transmittance of the infrared lens.

关 键 词：红外镜头透过率 回返法 透过率测试系统 光阑渐晕 

分 类 号：TN216[电子电信—物理电子学]