空间相机中主镜及其支撑方案设计与分析方法

叙述了现代空间相机对主镜的特殊要求。总结了主镜对空间相机性能具有重要影响的主要因素,即形状、材料、轻量化形式、支撑方式、微重力的影响和热尺寸稳定性等,并说明了在设计时应考虑的问题。重点论述了在对主镜进行分析时的多学科集成仿真方法、一般分析过程和迭代仿真分析策略,以及有限元法的工程分析的误差和光学元件面形评价方法。实践证明,该研究方法在空间相机设计与制造中是切实可行的。

Design and analysis for primary mirror and its support of space camera

The special requirement about primary mirror in modern space camera is stated. The following factors for primary mirror and its support are summarized, shape decision, material selection, lightweight methods, support pattern, weight-loss function and thermal stability. They are main factors to affect the quality of space camera about primary mirror. The analysis method and strategies for primary mirror is presented, among which multi-principle integrated analysis method, ordinary analyzing process and iteration simulation approach is emphasized. The error sources of finite element method (FEM) and methods for surface figure error evaluation are introduced. The research and design (R&D) for primary mirror indicates that the method of R&D is reasonable and feasible.