针对高精度星敏感器对其功能测试设备精确模拟星点位置和星等的实际要求，设计了一种硅基液晶(LCOS)型高精度动态星模拟器的光学系统。分析星模拟器准直与照明光学系统的任务需求并给出了设计方案。为提高模拟器的成像精度，提出了LCOS的光学拼接方法，详细设计了大视场、大相对孔径、大出瞳距离的准直光学系统并进行了像质评价；为同时满足显示器件的照明条件和-1～7等星的准确模拟，对照明光学系统进行了详细设计并给出了仿真结果。提出了一种动态星模拟器星点位置修正方法，通过实验测试，动态星模拟器的星间角距误差优于12″，精确模拟-1～7等星，满足当前对高精度星敏感器的检测需要。

Aiming at completing functional tests on high precision star sensor of stars′ positional accuracy and star magnitude, an optical system of liquid crystal on silicon (LCOS)-based and high precision dynamic star simulator is designed. The general designing program is presented after the analysis of the collimating and the illuminating optical system. In order to improve the simulating precision, a optical splicing method of LCOS is put forward, designing process of a collimating optical system with large field of view, large relative aperture and long exit pupil is given in detail as well as the aberration diagrams. To satisfy the illuminating conditions ordered by LCOS and achieve simulation of -1 to 7 magnitude stars, an illuminating optical system is emulated. Experimental test indicates that the angular distance accuracy is less than 12″, and -1 magnitude to 7 magnitude stars can be simulated, which meets the calibration requirements of high precision star sensor.