红外双波段双层衍射定焦光学系统设计  

Design of Infrared Dual-Band,Double-Layer Diffraction Fixed Focus Optical System

作　　者：漆云海 李绍楠 杜保林[2] 张鹏[2] 胡磊力[2] QI Yunhai;LI Shaonan;DU Baolin;ZHANG Peng;HU Leili(Naval Equipment Department,Beijing 100000,China;Luoyang Institute of Eletro-Optical Equipment,AVIC,Luoyang 471000,China;National Key Laboratory of Space Based Information Perception and Fusion,Luoyang 471000,China)

机构地区：[1]海军装备部,北京100000 [2]中国航空工业集团公司洛阳电光设备研究所,河南洛阳471000 [3]空基信息感知与融合全国重点实验室,河南洛阳471000

出　　处：《电光与控制》2024年第5期108-111,共4页Electronics Optics & Control

摘　　要：通过对多层衍射光学元件在中、长波红外波段的设计分析与计算,设计了一种焦距为200 mm的红外光学系统,在中波红外和长波红外两个波段的透过率均大于80%,成像效果良好并且满足无热化设计要求。其采用了双层衍射技术,选用锗、硒化锌和硫化锌等材料,高效率地实现了衍射目的,提升了两个波段的光学透过率。采用了二次成像的光学系统结构,实现了光学小口径设计,其光学传递函数能够在-55℃至+71℃环境下实现无热化成像的要求,达到了设计目的。Based on the design analysis and calculation of multi-layer diffractive optical elements in medium and long wavelength infrared bands,an infrared optical system with a focal length of 200 mm is designed.The transmittance in medium and long wavelength infrared bands is greater than 80%,the imaging effect is good and meets the requirements of non-thermal design.Double-layer diffraction technology is adopted,and materials such as germanium,zinc selenide and zinc sulfide are used to achieve the diffraction goal with high efficiency and improve the optical transmittance of the two bands.The optical system structure of secondary imaging is adopted to realize optical small-diameter design.The optical transfer function can achieve the requirements of non-thermal imaging in the environment of-55℃to+71℃,thus achieving the design purpose.

关 键 词：光学系统设计 红外光学系统 无热化 衍射 透过率 

分 类 号：O435[机械工程—光学工程] V249.326[理学—光学]