基于多尺度成像的宽波段广域高分辨光学系统设计  

Design of Wide-Band Wide-Area High-Resolution Optical System Based on Multi-Scale Imaging

作　　者：张凡凡 刘钧[1] 高明[1] 吕宏[1] Zhang Fanfan;Liu Jun;Gao Ming;LüHong(School of Opto-electronical Engineering,Xi’an Technological University,Xi’an 710021,Shaanxi,China)

机构地区：[1]西安工业大学光电工程学院,陕西西安710021

出　　处：《激光与光电子学进展》2024年第12期258-267,共10页Laser & Optoelectronics Progress

基　　金：微光夜视技术重点实验室基金(61424120503xx)。

摘　　要：针对光电成像系统呈现出的全天候、大视场、高分辨的成像需求,基于多尺度成像原理设计了一款0.4~1.7μm宽波段的广域高分辨率光学成像系统。该系统由共心球物镜和37个中继子系统阵列组成,通过多个中继子系统阵列对共心球物镜所得一次中间像面进行视场分割、成像及像差校正,从而实现广域高分辨成像。经过优化设计,最终得到全视场(105.6°×25.6°)的宽波段、大视场、高分辨光学系统。系统单通道全视场范围内点列图的最大均方根半径值小于一个像元尺寸,各视场调制传递函数值在空间频率为33 lp/mm处均大于0.6,曲线平滑集中。分析结果表明,该系统满足大视场、高分辨、全天候成像需求,可为后续宽波段、大视场、高分辨光学成像系统的设计提供一种可行的参考方案。In view of the all-weather,large-field and high-resolution imaging requirements of photoelectric imaging systems,we design a wide-area high-resolution optical imaging system with a wide band of 0.4~1.7μm based on the principle of multi-scale imaging.The system consists of a concentric sphere objective and 37 relay subsystem arrays.Multiple relay subsystem arrays perform field segmentation,imaging and aberration correction of the primary intermediate image surface obtained by the concentric sphere objective,so as to achieve wide-area high-resolution imaging.After optimizing the design,a wide-band large-field high-resolution optical system with a wide field of view of 105.6°×25.6°is finally obtained.The maximum root mean square radius value of the point column plot within the single-channel full field of view of the system is less than one cell size,and the value of each field of view modulation transfer function is greater than 0.6 at the spatial frequency of 33 lp/mm,and the curve is smooth and concentrated.The analysis results show that the system meets the requirements of high-resolution,all-weather imaging with a large field of view.It can provide a feasible reference for the design of subsequent wide-band large-field high-resolution optical imaging systems.

关 键 词：光学设计 多尺度成像 共心透镜 广域高分辨系统 宽波段 

分 类 号：O439[机械工程—光学工程]