大口径像旋补偿系统的分析与设计

由成像系统和可控扫摆镜组合的具有周视功能的系统常出现像旋现象，根据反射棱镜具有调整光轴和引起像旋的性能，将不同的组合结构设计成像旋补偿系统，以相互抵消的方式来消除像旋的影响。利用平面反射镜组合代替反射棱镜的方式，消除棱镜加工等实际因素对通光口径的限制。根据反射棱镜转动定理分析扫摆镜产生像旋的原因，举例说明反射镜组合能够解决大口径扫摆光学系统的像旋问题。

Analysis and design of large-aperture image-rotation compensation system

An image-rotation system which could efficiently enhance its scanning performance at a large scanning range was designed to eliminate the effect of the image rotation in a cancellation form according to the characteristics of the reflector prism that might adjust the optical axis and generate the image rotation, since the panoramic system composed of an imaging system and controllable scanning mirror usually produces the image-rotation phenomenon. The influence of prism fabrication and other factors on the clear aperture was eliminated by the arrangement of the flat reflectors instead of the reflective prism. The reason that the scanning mirror generates the image rotation was analyzed according to the image-rotation theory. The feasibility that the mirror combination can solve the problem of the image rotation was illustrated with examples.