真空低温环境反射镜光谱反射率原位测量技术

杨林华, 许杰, 蒋山平

杨林华, 许杰, 蒋山平. 真空低温环境反射镜光谱反射率原位测量技术[J]. 应用光学, 2015, 36(4): 559-565. DOI: 10.5768/JAO201536.0403001
引用本文: 杨林华, 许杰, 蒋山平. 真空低温环境反射镜光谱反射率原位测量技术[J]. 应用光学, 2015, 36(4): 559-565. DOI: 10.5768/JAO201536.0403001
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Yang Lin-hua, Xu Jie, Jiang Shan-ping. Technique of mirror spectrum reflectivity measurement in situ under simulated space environment[J]. Journal of Applied Optics, 2015, 36(4): 559-565. DOI: 10.5768/JAO201536.0403001
Citation: Yang Lin-hua, Xu Jie, Jiang Shan-ping. Technique of mirror spectrum reflectivity measurement in situ under simulated space environment[J]. Journal of Applied Optics, 2015, 36(4): 559-565. DOI: 10.5768/JAO201536.0403001
shu

真空低温环境反射镜光谱反射率原位测量技术

  • 北京卫星环境工程研究所,北京 100094

详细信息
    通讯作者:

    杨林华（1962-），女，山东莱州人，研究员，主要从事模拟空间环境下空间光学遥感器辐射定标技术、太阳辐照环境模拟技术研究工作。Email:ylhrose@163.com

  • 中图分类号: TN206

Technique of mirror spectrum reflectivity measurement in situ under simulated space environment

  • Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China

摘要

    摘要
  • 摘要: 为了研究真空低温环境下定标光学系统光谱反射率测量技术，搭建了小型离轴抛物面反射镜的光谱反射率原位测量试验系统。系统由太阳模拟器、准直镜、折叠镜、离轴抛物面反射镜、光谱仪、数采系统等组成。分别在常温常压和真空低温环境下进行测量，得到350 nm～950 nm谱段光谱反射率及变化规律，常温常压、真空低温、恢复常温常压下系统测量平均值分别为0.882、0.863和0.883，测量重复性1.1％,不确定度优于2.4％。结果表明，反射镜光谱反射率在真空低温环境下有较明显的下降，环境恢复后，反射率随之恢复。
    Abstract: In order to study the technique for spectrum reflectivity measurement of calibrated optic system in vacuum and low-temperature environment, a small test system which was applied to measure the spectrum reflectivity of the off-axis parabolic mirror in situ was built. The system consists of solar simulator, collimating lens, folding mirror, off-axis parabolic mirror, spectrometer and control system. The measurement was carried out in atmospheric environment and simulated space environment,respectively. The measured spectrum was from 350nm to 950nm. The average spectrum reflectivity of the mirror was 0.882 in atmospheric environment, it was 0.863 in simulated space environment. When the mirror went back in the atmospheric environment, the average spectrum reflectivity of the mirror was 0.883. In the test, the measurement repeatability was 1.1％, the uncertainty was less than 2.4％. The test results show that the spectrum reflectivity of the off-axis parabolic mirror decreases in simulated space environment, and increases when the environment is back to the atmospheric environment.
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