超低杂散光同轴四反光学系统  

Ultra-low stray light coaxial four-mirror optical system

作　　者：桑海龙 郑阳[1] 李延伟 谢新旺 谢虹波 刘华秋 SANG Hailong;ZHENG Yang;LI Yanwei;XIE Xinwang;XIE Hongbo;LUI Huaqui(School of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun130022,China;Ji Hua Laboratory,Foshan528200,China)

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]季华实验室,广东佛山528200

出　　处：《光学技术》2025年第2期175-182,共8页Optical Technique

基　　金：广东省科技计划(X190121TC190)。

摘　　要：为适应卫星遥感载荷轻量化和小型化的需求,基于同轴四反光学系统初级像差理论,采用偶次非球面反射镜,设计了一种大视场、长焦距的同轴四反光学成像系统。系统视场角±2.5°,焦距550mm,总长度210mm。调制传递函数(MTF)值优于0.2@100lp/mm,±2.5°视场内最大畸变为0.7%,±1.5°视场内最大畸变为0.27%。与传统±1.5°视场同轴四反光学系统相比,主四镜共体加工简化了装配难度而且显著抑制杂散光。对比分析发现,同视场内相比传统同轴四反光学系统,杂散光减少81%。此系统可降低设计复杂性和系统重量,为未来卫星遥感光学系统的设计提供有价值的参考。To meet the demands for lightweight and miniaturized satellite remote sensing payloads, based on the theory of primary aberrations in coaxial four-mirror reflective optical systems, an even asphere mirror is used to design a large-field, long-focal-length coaxial four-mirror reflective imaging system. The system has a field of view of ±2.5°, a focal length of 550mm, and a total length of 210mm. The Modulation Transfer Function(MTF) exceeds 0.2 at 100lp/mm, with a maximum distortion of 0.7% within a ±2.5° field of view and 0.27% within a ±1.5° field of view. Compared to traditional coaxial optical systems with a ±1.5° field of view, the monolithic processing of the main four mirrors simplifies assembly and significantly reduces stray light. Comparative analysis shows that, within the same field of view, stray light is reduced by 81% compared to traditional coaxial four-mirror reflective optical systems. This system can reduce design complexity and system weight, providing valuable reference for the design of future satellite remote sensing optical systems.

关 键 词：几何光学 杂散光分析 多面共体 同轴四反 轻量化设计 

分 类 号：V443.5[航空宇航科学与技术—飞行器设计]