中国光学（中英文）2024，Vol.17Issue(4)：909-920,12.DOI:10.37188/CO.2023-0226
光轴稳定探测系统无热化光机结构设计
Design of athermalization optical machine structure for optical axis stability detection system
摘要
Abstract
The alignment accuracy of the emitting and receiving optical axes of laser communication equip-ment in the satellite ground field is crucial.Temperature fluctuation can cause deformations of optical com-ponents and mechanical structures,affecting the optical axis'alignment and reducing the system's detection accuracy.We design a high-precision optical axis stability system for detection.First,according to the tech-nical requirements of broadband and conjugate imaging,an off-axis reflective Keplerian telescope system with image transfer was applied to compress the beam.After passing through a beam splitter,the beams entered the detection subunit separately.A long focal length optical axis stability detection system was de-signed to improve detection accuracy.To correct the thermal difference of the reflective system,an optical passive non-thermalization technique was employed using a refractive mirror group to compensate for the thermal-induced aberration of the reflective mirror group.The mechanical structure was designed and subjected to finite element analysis.Finite element data were processed and fed into optical software to simu-late the optical axis deviation angle caused by temperature fluctuation.Finally,experiments were conducted for validation.The results show that the optical axis stability detection system has an optical axis deviation angle of 3.90"at-10°C and 4.23"at 45°C,reducing the impact of temperature fluctuation on optical axis deviation.关键词
离轴双反系统/光轴稳定性/无热化设计/有限元分析/泽尼克多项式Key words
off axis dual reflection system/optical axis stability/non-thermal design/finite element analysis/Zernike Polynomials分类
信息技术与安全科学引用本文复制引用
宋长孝,于信,白素平,姜冬旭,刘才,关淼心,韩佳昊..光轴稳定探测系统无热化光机结构设计[J].中国光学（中英文）,2024,17(4):909-920,12.基金项目
国家自然科学基金青年基金资助项目(No.62205032) （No.62205032）
吉林省科技发展计划项目(No.20210201139GX) （No.20210201139GX）
长春理工大学青年基金(No.XQNJJ-2019-01)Supported by National Natural Science Foundation of China Youth Foundation(No.62205032) （No.XQNJJ-2019-01）
Jilin Science and Technology Development Project(No.20210201139GX) （No.20210201139GX）
Changchun University of Science and Techno-logy Youth Fund(No.XQNJJ-2019-01) （No.XQNJJ-2019-01）
