制冷型折衍混合双波段红外光学系统设计  

Design of Cooled Refractive-Diffractive Hybrid Dual-Band Infrared Optical System

作　　者：郑坚 文心怡[3] 朱伟 胡乔伟 王文运[1] 王淑振 ZHENG Jian;WEN Xinyi;ZHU Wei;HU Qiaowei;WANG Wenyun;WANG Shuzhen(Nanjing Les Electronic Equipment Co.LTD,Nanjing 210014;The 28th Research Institute of China Electronics Technology Group Corporation,Nanjing 210007;Jiangsu Radio Factory Co.,Ltd,Nanjing 210022)

机构地区：[1]南京莱斯电子设备有限公司,南京210014 [2]中国电子科技集团第二十八研究所,南京210007 [3]江苏无线电厂有限公司,南京210022

出　　处：《长春理工大学学报（自然科学版）》2024年第3期29-36,共8页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：江苏省科技厅项目(BK20210059)。

摘　　要：能够同时工作在中波红外和长波红外频谱范围内的双波段红外光学系统可以有效利用这两个波段的信息,实现优势互补,从而显著提升其探测性能,应用前景广阔。双层谐衍射光学元件不仅具备独特的色散特性,还可以在多个设计波长处获得很高的衍射效率,为双波段红外光学系统设计提供了新思路。针对双层谐衍射光学元件的相关理论进行了研究,并基于双层谐衍射光学元件完成了焦距为200 mm,F数为2的制冷型折衍混合双波段红外光学系统的设计。成像质量分析以及冷反射分析结果表明,所设计光学系统的各类像差得到了有效校正,成像质量优良。The dual-band infrared optical system,which can work in both medium wave and long wave infrared bands,can effectively utilize the information of these two bands and realize complementary advantages.Therefore,its detection perfor-mance can be significantly improved and the application prospect is broad.Double-layer harmonic diffractive optical element not only has the dispersion characteristics opposite to the traditional infrared lens,but also can obtain high diffraction efficiency at multiple design wavelengths,which provides a new idea for the design of dual-band infrared optical system.In this paper,the theory of double-layer harmonic diffractive optical element is studied,and based on the double-layer harmonic diffractive optical element,the design of a cooled refractive-diffractive hybrid dual-band infrared optical system with a focal length of 200 mm and F2 is completed.The results of imaging quality analysis and Narcissus analysis show that various aberrations of the designed optical system have been effectively corrected,and the imaging quality is excellent.

关 键 词：光学设计 折衍混合 双层谐衍射光学元件 双波段 制冷型 

分 类 号：TN216[电子电信—物理电子学]