第20卷第4期
2012年4月文章编号
1004-924X(2012)04-0739-06
光学精密工程
Optics and Precision Engineering
小型可见光双视场光学系统的研制
魏群，，艾兴乔，贾宏光
（中国科学院长春光学精密机械与物理研究所，吉林长春130033）
Vol, 20No, 4
Apr.2012
摘要：基于光学设计基本理论，设计了一种体积小，跟踪范围可以达到整个前半球的可见光双视场光学系统，系统由前部集束系统，中间光路转折系统及后部成像系统3部分组成，集束系统采用望远镜式结构，用于改变光束的口径；光路转折系统采用库德光路，由4片反射镜组成，用于转折光路及扫描；成像系统由长焦成像系统和短焦成像系统组成，分别形成两个视场的像，用于目标识别与跟踪，光学系统焦距分别为60mm和120mm，设计传递函数在58p/mm处均大于0.5。加工装调后进行了成像试验验证，结果表明，该系统能够同时完成大视场及小视场的图像获取，在可视范围内成像质量满足系统总体要求。
关键调：双视场光学系统；可见光镜头；库德光路；光学设计
中图分类号：TH703
文献标识码：A
doi;10.3788/OPE.20122004.0739
Development of small-scale and dual-field visible light optical system
WEI Qun',AI Xing-qiao,JIA Hong-guang
(ChangchunInstituteofOptics，FineMachanics andPhysics, ChineseAcademy of Sciences，Changchun130033,China) Correspondingauthor,E-mail:wei.q@hotmail.com
Abstract; On the basis of optical design theory, this paper designs a small-scale and dual-field optical system with a half sphere tracking field. This optical system takes a Code optical path as the main sys-tem and consists of three parts: tele-system at front, ray tuning system in the middle, and imaging system in the back. The first part is a telescope compound for adjusting the diameter of the light beam; the middle part is Code optical path made up four mirrors, which is used to turn the direction of the light bean; and the last part is an imaging system for long focal and short focal imaging and for tracking and recognizing targets. The focal lengths of the system are 60 mm and 120 mm and their Modulation Transfer Functions(MTFs) are all above 0. 5 at 5. 8 lp/mm. By imaging tests, this optical system has better imaging quality and can capture the images form the large field and small one at the same time.
Key words: dual-field optical system; visible light lens; Code system; optical design
收稿日期：2011-02-16；修订日期：2011-04-19
基金项目：总装装备预研基金资助项目(No.51301060207）