空间技术的不断发展对空间相机光学系统的设计不断提出新的要求, 为了提高相机系统的可靠性, 对系统的面型加工精度有更高的要求。介绍了一种易于制造的空间相机光学系统, 基于 R-C系统, 设计了含有三块球面校正镜组件的折反式光学系统。结果表明, 该光学系统在空间频率 50 lp/mm处,调制传递函数均大于 0.4,主镜和次镜均为二次曲面, 其余均为球面, 具有易于制造装调等优点。

With the development of space technology, new design requirements for optical systems of space cameras are provided. Higher accuracy requirements are provided for system processing so as to improve the reli. ability of camera systems. An easily fabricated optical system of space camera is introduced. A catadioptric opti. cal system with three pieces of spherical collimating mirror subassembly based on ritchey chretion (R-C) system is designed. It shows that when the space frequency of the system is 50 lp/mm, all the modulation transfer func. tions are more than 0.4. And the surface of primary and secondary mirror are quadric, the rest is spherical, which has the advantages of easiness in fabrication, installation and debugging.