主三镜一体化离轴三反光学天线设计

为提高空间激光通信离轴三反光学天线的装调效率，需要对反射镜总的装调自由度进行优化设计。基于共轴三反无焦系统的设计原理，提出一种主三镜一体化的设计方法，并推导了光学系统结构参数之间的关系，利用Zemax光学软件设计了一种结构紧凑、主三镜一体化的离轴三反光学天线。设计结果表明:全视场光学像质优于衍射极限，主镜和三镜空间位置相接近，可共母板加工和面形共基准检测，为主三镜的一体化加工提供了方法。光学天线的装调自由度减少了6个，降低了装调难度，提高了装调效率。

Design of off-axis three-mirror optical antenna based on integration of primary-tertiary mirror

In order to improve the installation and adjustment efficiency of off-axis three-mirror optical antenna of space laser communication,it is necessary to optimize the design of total freedom of the mirror.Based on the principle of coaxial three-mirror afocal system,a method of integration of primary-tertiary mirror was proposed.The relationship between structural parameters of optical system was deduced,and an off-axis three-mirror optical antenna with compact structure and primary-tertiary mirror integration was designed by Zemax optical software.The design results show that the optical image quality of full field of view is better than diffraction limit,the primary mirror and tertiary mirror are close to each other in space,the common mother plate can be processed and surface shape can be detected by the common reference,which provides a method for integrated processing of primary mirror and three-mirror.The degree of installation and adjustment freedom of optical antenna is reduced by 6,which reduces the difficulty and improves the efficiency.