大孔径大视场轻小型星敏感器光学系统  

Optical system of light star tracker with wide field and large aperture

作　　者：杨皓明[1] 王灵杰[2] 翁志成[2] 冯秀恒[2] 方志良[1] 

机构地区：[1]南开大学现代光学研究所光电信息技术教育部重点实验室,天津300071 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《光学精密工程》2007年第2期151-154,共4页Optics and Precision Engineering

基　　金：中国科学院知识创新工程信息化建设专项(No.INF105SDB106)

摘　　要：提出了一个大相对孔径、大视场轻小型CCD星敏感器光学系统设计方案,该星敏感器焦距为22.5 mm,F数为1.2,谱段范围470-750 nm,视场角25°。采用双高斯基本型后加一片近乎等晕的正透镜,获得了较大的相对孔径,同时选择高折射率玻璃材料增大视场并降低轴上及轴外光束入射角,高折射率玻璃材料亦能降低高级像差且使系统总长缩短。像质分析表明,此设计方案能够满足使用要求,光学系统总长仅为46.51 mm,满足实际工程轻量化需求。Star tracker composing of optical system, photoelectric receiver and image processing element is a key equipment of satellites for star position. In this paper, we present a optical system of light CCD star tracker with wide filed and large aperture in a focal length of 25 ram, a F number of 1.2, a working wavelength range of 470~750 nm and a view angle of 25 degrecs. The optical system is composed of a double Gauss lens and a piece of positive lens, considering the large F number. In order to decrease the input angles of the axial and off-axial light bundle, the glass with high refractive index is used to produce smaller high-order aberrations and shorten the total length of the system. The imaging analysis results show that the design is a feasible scheme,and the total system length is only 46.51 mm.

关 键 词：星敏感器 折射 光学设计 

分 类 号：V448.222[航空宇航科学与技术—飞行器设计]