中国光学Issue(2)：320-325,6.DOI:10.3788/CO.20140702.0320
空间微重力下离轴三反相机离焦范围
Defocus range of off-axis three-mirror anastigmat(TMA) camera under space microgravity
摘要
Abstract
The mirror interval and radius of curvature of optical system including three mirrors are often changed due to the impact of space microgravity , which has a greater impact on the back focal length , and causes camera defocus and imaging quality reduction .Through the equivalent Gauss optical system analysis of three-mirror system , back focal length formula can be obtained .By homogeneous coordinate transformation , the reflection mirror rigid-body displacement formula is obtained , and a mirror radius is obtained in the micro-gravity environment using the least squares fitting algorithm .Finally, by calculating the camera in space mi-crogravity environment , the defocusing amount is 0.04 mm.Results provide a theoretical basis for the design of focusing mechanism .关键词
空间相机/离轴三反相机/空间微重力/离焦Key words
space camera/off-axis three-mirror anastigmat camera/space microgravity/defocus分类
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刘磊,马军,郑玉权..空间微重力下离轴三反相机离焦范围[J].中国光学,2014,(2):320-325,6.基金项目
国家高技术研究发展计划（863计划）资助项目 （）
