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基于点源透过率的空间光学系统杂光测量
引用本文:王治乐,龚仲强,张伟,王付刚. 基于点源透过率的空间光学系统杂光测量[J]. 光学技术, 2011, 37(4): 401-405
作者姓名:王治乐  龚仲强  张伟  王付刚
作者单位:哈尔滨工业大学空间光学工程研究中心,黑龙江哈尔滨,150001
基金项目:国家自然科学基金资助项目(61007008)
摘    要:杂光测量是光学系统杂光分析的有效途径之一,它能够对消杂光设计结果进行准确的评估.针对空间光学系统的工作环境,考虑到其视场外有强烈辐射源(如太阳等),采用点源透过率方法来验证光学系统抑制杂光的能力.搭建了一套无中心遮挡的离轴抛物面反射式杂光测量装置,测量动态范围为10-1~10-11.利用该装置对口径为300mm、全视场...

关 键 词:光学测量  点源透过率  空间光学系统  杂光

Measurement of stray light based on point-source transmittance in space optical system
WANG Zhi-le , GONG Zhong-qiang , ZHANG Wei , WANG Fu-gang. Measurement of stray light based on point-source transmittance in space optical system[J]. Optical Technique, 2011, 37(4): 401-405
Authors:WANG Zhi-le    GONG Zhong-qiang    ZHANG Wei    WANG Fu-gang
Affiliation:(Research Center for Space Optical Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)
Abstract:Measurement is an efficient approach to analyze the stray light in optical systems,which can evaluate the design results of restraining stray light accurately.For the special work condition of space optical systems,the intense radiant point sources(such as the sun,etc) outside of the field of view are considered.The method of point source transmittance(PST) is employed to validate the capability of restraining stray light.A suit of reflective parabolic stray light measuring device is set up,which is off axis without centered obstruction,and the measuring range is 10-1~10-11.The stray light of a Cassegrain space optical system with calibre 300mm,field of view 1.5° is measured.The measurement procedure and results are presented,and the uncertainty of measurement is analyzed.The results show that this device has large dynamic range,compact structure,large calibre of outlet light,highly accuracy(when the fiducial probability is about 95%,the uncertainty of measurement is about 1.48%) and so on,so it can meet the engineering requirement for stray light measurement of space optical systems.
Keywords:optical measurement  point source transmittance  space optical system  stray light
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