基于双柱罐结构的三波段杂散光PST测试装置  

Three-band Stray-light Test Facility for Point Source Transmission Based on Double Cylindrical Chamber

作　　者：曾瑾[1,2] 王战虎[1,2] 李欣耀 靳莉[1,2] 周双喜[1,2] 马臻[3] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院红外探测与成像技术重点实验室,上海200083 [3]中国科学院西安光学精密机械研究所,陕西西安710119

出　　处：《红外》2017年第4期12-16,22,共6页Infrared

摘　　要：为了评估由太阳、云层和地表等物体辐射或反射的非成像光线对空间光学系统性能的影响,通过在地面模拟空间环境,建立了一套1m口径的杂光测试装置。借鉴国外先进杂光测试装置的研制经验,该装置采用双柱罐结构,可以有效地抑制测试环境中的反射、散射和衍射等光污染,使点源透过率(Point Source Transmission,PST)的测试精度lg(测量值/真实值)小于±0.5。介绍了该装置的工作原理、组成和功能,并用该装置对某空间相机在东西方向和南北方向可见光谱段的PST曲线进行了测试。测得该相机的杂光抑制水平可到10^(-6)量级,测试曲线和理论仿真曲线符合良好,表明该杂光测试装置具有较高的精度和可靠性,能满足空间光学系统对杂光性能测试的需求。To assess the influences of non-imaging l ight radiated or reflected by sun, cloud and earth surface on space optical systems, a set of stray l ight test equipment with a 1-meter aperture is established by simulating the space environment on the ground. According to the development experience of advanced stray l ight test equipment of foreign countries, a double cylindrical chamber is used in the equipment. So, it can reduce the l ight pollut ion such as the reflection, scattering and dif fract ion in the test environment and make the test accuracy lg（measurement value/ true value） of Point Source Transmission （PST） to be less than ±0.5. The operation principle, components and fu nct io n of the equipment are presented. The equipment is used to test the PST curves in the visible spectral band both in the west-east direction and in the north-south direction. The stray l ight suppression of the camera can be up to 10-6 order o f magnitude. The measured curve is in good accordance with the theoretical simulation curve. This shows that the stray l ight test equipment has high accuracy and rel iabi lity and can meet the stray light test requirements of space optical systems.

关 键 词：杂光测试 双柱罐 点源透过率 

分 类 号：V416.8[航空宇航科学与技术—航空宇航推进理论与工程]