第20卷第12期 2012年12月
文章编号1004-924X(2012)12-2619-07
光学精密工程
Optics and Precision Engineering
Vol.20No,12
Dec.2012
双向大视场消畸变低温红外目标模拟光学系统设计
赵文才“，马军
（中国科学院长春光学精密机械与物理研究所，吉林长春130033）
摘要：为了选择合适的低温红外目标模拟光学系统，针对国内现有离轴三反射光学系统多存有弧失视场较大，子午视场很小的向题，本文基于光学系统对称性法则，设计了子午和弧矢都为5°，波长为3～5μm的矩形双向大视场离轴三反系统，其焦距为400mm，F#为8。利用光学系统结构参数和反射镜的非球面系数，调整三镜的偏心及倾斜来消除畸变及其它像差，系统光学传递函数在6.5lp/mm时优于0.71，全视场均方根波像差达到入/250，均方根最大弥散班半径不超过7.0um，达到衍射极限。另外，系统在各个谱段全视场范围内的最大畸变量小于0.04%，设计的系统可用于红外及可见波段，成像质量均良好。
关键调：红外目标模报，光学设计；离轴三反射系统；大视场；消時变
中图分类号：TH703;TN216
文献标识码：A
doi;10, 3788/OPE. 20122012. 2619
Designof cryogenicinfraredtargetsimulationsystem withbidirectionalandwidefieldforeliminatingdistortion
ZHAOWen-cai',MAJun
(ChangchunInstituteof Optics,FineMechanics andPhysics, ChineseAcademy of Sciences,Changchun130033,China) Correspondingauthor,E-mail:wencaizhao@yahoo.com.cn
Abstract: To overcome the shortcomings of off-axis Three Mirror Anastigmatic (TMA) optical systems in larger sagittally FOVs and smaller meridionally FOVs, this paper designs a bidirectional TMA optical system for cryogenic infrared target simulation system based on the symmetric rule of optical system, Both the sagit-tally and meridionally FOVs are 5°,the larger FOV optical system at 3-5 μm has a focal length of 400 mm and a F number of 8. By using the structural parameters of the optical system and the non-spherical coeffi-cients of the mirrors to adjust and correct the eccentric and tilt of the three-mirror and to eliminate distortion and other aberrations, the system shows that the MTF is better than 0. 71 at 6. 5 lp/mm, the aberration of the whole FOV is >/250(RMS) and the maximum radius of diffuse point is less than 7. 0 μm(RMS), which achieves diffraction limit. Moreover, the maximum distortion in the whole FOV is less than 0. 04%. Finally, it proves that the optical system has good imaging quality both in the visible and infrared spectral regions, Key words: infrared target simulation; optical design; off-axis Three Mirror Anastigmatic(TMA) sys-
tem;widefield;eliminating distortion
收稿日期：2012-07-21；修订日期：2012-08-23，
基金项目：国家863高技术研究发展计划资助项目（No.863-2-5-1-13B)；吉林省科技发展计划资助项目（No
20100524）；科技部国际合作项目（No.2011DFA50590）