观瞄仪目标发生器准直投影系统的设计  

Design of collimating projection system used for target generator of sighting instrument

作　　者：韩军[1] 师永栋 陈文建[1,2] 杨建莉[1,2] 胡斐[1,3] Han Jun Shi Yongdong Chen Wenjian Yang Jianli Hu Fei(School of Optoelectronics Engineering, Xi＇ an Technological University, Xi＇an 710021, China Xi＇an Institute of Applied Optics,Xi＇an 710065,China Xi＇an Institute of Space Radio Technology, CAST, Xi＇an 710100, China)

机构地区：[1]西安工业大学光电工程学院,陕西西安710021 [2]西安应用光学研究所,陕西西安710065 [3]空间电子信息技术研究院,陕西西安710100

出　　处：《应用光学》2016年第5期663-667,共5页Journal of Applied Optics

基　　金：陕西省科技厅(2014KW05)

摘　　要：针对空间标准动态目标发生器的设计指标要求,对卡塞格林R-C系统进行了改进,通过在第2镜和像面之间加入一片双曲面镜,设计完成了焦距为1 600mm、相对孔径为1∶1.2、视场角为1°、工作波段在0.4μm^0.7μm和8μm^12μm的共轴三反射光学系统。设计结果表明:该系统弥散斑RMS小于5μm,在可见光波段与远红外波段相应的空间频率处,此共轴三反系统的调制传递函数值均大于0.7,接近衍射极限,满足系统对成像质量的要求。According to the requirements of design specifications for standard dynamic target generator of space, we improved the Cassegrain R-C system, namely joining a hyperboloidal mirror between the second lens and image plane. The optical system can collimate the output from liquid crystal light valve in 0.4 μm-0.7 μm and 8 μm-12 μm,and enable an image system to be tested out of 1° field of view. The effective focal length is 1 600 mm and the relative effective aperture is F/1. 2 . The result indicates that the diffuse plaque root-mean-square （RMS） is less than 0. 5, the modulation transfer function （MTF）of the coaxial three-mirror system values is always greater than 0.7,and close to the diffraction limit at the corresponding spatial frequency of visible and far-infrared band, hence the coaxial three-mirror system meets the requirements of image quality.

关 键 词：空间标准动态目标发生器 光学设计 卡塞格林R-C系统 共轴三反系统 

分 类 号：TN202[电子电信—物理电子学] TH745[机械工程—光学工程]