小轻型CCD遥感相机全反射光学系统设计

Design of a Compact All-Reflective Optical System for a CCD Remote Sensing Camera

利用三反射镜的消像差理论 ,进行了一种小轻、大视场的全反射系统的设计。该系统通过同轴设计、离轴使用 ,使筒长达到 f′/7～ f′/9,视场达到 3°以上 ,遮光比在 6 %以下 ,像质达到衍射极限。这种系统特别适于长焦距遥感 CCD相机的应用。

An all reflective system with compact structure and wide field of view is designed on the basis of the three mirror aberration theory. Coaxial design is adopted whereas its off axis rays is used, so that the length of its lens barrel can be of f′/7~f′/9, field of view more than 3°, the obstruction ratio less than 6%, and the image of quality reaches to the limit of diffraction. The optical system suits the needs of long focus remote sensing CCD camera.