红外双波段共光路消热差光学系统设计  

Athermal Design of Dual-Band Infrared Optical System with Common Aperture

作　　者：王少白[1] 宋璐 黄辰旭 WANG Shaobai;SONG Lu;HUANG Chenxu(Luoyang Institute of Electro-Optic Equipment,AVIC,Luoyang 471000,China;School of Information Engineering,Henan University of Science and Technology,Luoyang 471000,China)

机构地区：[1]中国航空工业集团公司洛阳电光设备研究所,河南洛阳471000 [2]河南科技大学信息工程学院,河南洛阳471000

出　　处：《河南科技》2023年第8期9-13,共5页Henan Science and Technology

摘　　要：【目的】为实现中长波双波段红外探测,同时满足系统轻小化要求,本研究设计一套红外双波段共光路消热差光学系统。【方法】该系统采用透射式共光路结构,使用锗、硒化锌和硫系玻璃等材料的组合来满足被动消热差要求。光学系统焦距为200 mm、F/#为2,工作波段覆盖范围为3~5μm、8~10μm,达到100%冷光阑效率。【结果】像质评价结果表明,该系统的调制传递函数在空间频率16l p/mm处的值大于0.5,在-55~+70℃宽温度范围内成像良好。该系统结构紧凑,总长度不超过120 mm。【结论】该共光路实现无热化和小型化的设计要求,具有一定的工程应用前景。[Purposes]In order to meet the need of simultaneous mid&long wave infrared detection and constraints of light weight and small volume,anathermal dual-band infrared optical system with common aperture is designed.[Methods]The system adopts the transmission type common optical path structure,and the combination Ge,ZnS and AMTIR I meets the requirements of passive athermalization.The sys⁃tem's focal length is 200 mm and F/#equals 2,along with operation band covering 3~5μm and 8~10μm and 100%cold diaphragm efficiency.[Findings]The image quality evaluation results demonstrate MTF of the system exceeds 0.5 at the spatial frequency of 16 lp/mm and image quality retains fine in a wide temperature range of-55~+70℃,along with compact structure whose length not exceeding 120 mm.[Conclusions]This athermal and compact design with common aperture shows comparative appli⁃cable potentiality.

关 键 词：红外光学系统 消热差设计 双波段 共光路 

分 类 号：TN214[电子电信—物理电子学]