High resolusion optical systems including refractors,catadioptric lens and reflectors used to observation from the satellites to the earth is presented and the problems in design is discussed.

• 对用于卫星对地观测用各种高分辨率长焦距光学系统，如折射系统，折反射系统和反射系统等各种形式和设计问题进行了分析和讨论。