在星光制导的空间飞行器中,为准确确定空间方位信息,提高导航系统的精度,对星跟踪器光学镜头设计提出很高的要求。针对精度要求,设计了一种新型星跟踪器的光学镜头,系统地阐述了星跟踪器的工作原理,通过光学设计及相差分析,使光学系统的畸变小于0.2%、轴向球差小于0.1,该设计满足用户对高精度天文导航系统的需求。 In the star-guided spacecraft, in order to accurately determine the spatial orientation information and improve the accuracy of the navigation system, the design of the star tracker optical lens is very high. According to the requirement of precision, a new type of optical tracker is designed. The working principle of star tracker is elaborated systematically. Through the optical design and phase difference analysis, the optical system distortion is less than 0.2% and the axial spherical aberration is less than 0.1. The design to meet the user’s high-precision astronomical navigation system needs.