重力对空间相机系统波像差影响的光机集成分析与验证

发布时间：2019-06-02 00:30

【摘要】：对空间离轴相机在重力载荷作用下的系统波像差变化进行了集成仿真分析,同时研究了分析结果的精度。介绍了集成仿真分析技术的基本流程和关键技术,对比分析了ZERNIKE多项式拟合法与形函数插值法两种面形畸变转换接口算法的优劣。介绍了常用的两种形函数构造方法的基本原理,基于面积法构造形函数得到了光学元件面形畸变的接口文件。最后,在相机的光机结构装调完毕后,对系统波像差在重力载荷作用下的变化进行了测试。测试结果表明,该空间相机3个视场系统波像差的变化量分别为0.029 8λ(-1视场)、0.019 4λ(0视场)、0.052 3λ(+1视场),与分析结果基本吻合。3个视场分析结果的误差分别为0.002 4λ(-1视场)、-0.000 9λ(0视场)、0.007λ(+1视场,)均小于0.01λ,满足工程设计的要求,验证了集成仿真分析结果的准确性。此外,通过集成分析技术定量得到了不同影响因素对系统波像差的影响,基于此优化设计光机结构,改善了重力对空间相机3个视场系统波像差的影响。
[Abstract]:The variation of wave aberration of space off-axis camera under gravity load is analyzed by integrated simulation, and the accuracy of the analysis results is studied at the same time. This paper introduces the basic flow and key technologies of integrated simulation analysis technology, and compares and analyzes the advantages and disadvantages of ZERNIKE polynomial fitting method and shape function interpolation method. The basic principles of two commonly used form function construction methods are introduced. The interface file of optical element surface distortion is obtained by constructing shape function based on area method. Finally, after the optical structure of the camera is installed and adjusted, the variation of the system wave aberration under gravity load is tested. The test results show that the variation of wave aberration of the three field of view systems of the space camera is 0.029 8 位 (- 1 field of view), 0.019 4 位 (0 field of view) and 0.052 3 位 (1 field of view), respectively. The errors of the three field of view analysis results are 0.002 位 (- 1 field of view),-0.000 9 位 (0 field of view) and 0.007 位 (1 field of view, respectively), which meet the requirements of engineering design. The accuracy of the integrated simulation analysis results is verified. In addition, the influence of different influencing factors on the wave aberration of the system is quantitatively obtained by integrated analysis technology. based on this, the optical machine structure is optimized and the influence of gravity on the wave aberration of the three field of view system of the space camera is improved.
【作者单位】：中国科学院长春光学精密机械与物理研究所;
【基金】：国家863高技术研究发展计划资助项目(No.2009AA7020107)
【分类号】：V445.8

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