【摘要】 当前空间相机的光学系统的要求是 :在多光谱范围内 ,系统要有高分辨率、大视场、小体积、质量轻且像面为平像场 ,TMA(Threemirroranastigmat)可以满足上述要求。为此给出了这方面的设计 ,所研究的TMA系统三个反射面都是二次曲面 ,将主镜和第三镜离轴放置 ,避免中心遮拦的影响 ,系统的视场可达到 5°× 0 .2° ,焦距为 6m ,像质接近衍射极限。更多还原

【Abstract】 The current requirements for the optical system of a space camera are high resol ution, long focal length, wide field of view small volume and light weight.And all the surfaces in the system designed to satisfy these requirements are of uncoaxis, so that the effect of central obstruction can be avoided, and the syst em has a focal length of 6 m and a field of view of 5°×0.2°. The evaluation t est showed that the image quality is near diffraction limit.更多还原