Compact High-Zoom-Ratio Mid-Wavelength Infrared Zoom Lens Design Based on Particle Swarm Optimization

作     者：Liu, Zhenhao Zhang, Jipeng Huang, Yuqi Zhang, Xin Wu, Hongbo Zhang, Jianping 

作者机构：Changchun Inst Opt Chinese Acad Sci Fine Mech & Phys Changchun 130033 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China State Key Lab Appl Opt Changchun 130033 Peoples R China Chinese Acad Sci Key Lab Opt Syst Adv Mfg Technol Changchun 130033 Peoples R China 

出 版 物：《SENSORS》 (Sensors)

年 卷 期：2025年第25卷第2期

页      面：467-467页

核心收录：

学科分类：0710[理学-生物学] 071010[理学-生物化学与分子生物学] 0808[工学-电气工程] 07[理学] 0804[工学-仪器科学与技术] 0703[理学-化学] 

基　　金：National Natural Science Foundation of China (NSFC) 62475122 

主　　题：zoom lens design high zoom ratio particle swarm optimization optimization algorithms 

摘      要：This paper presents an automated method for solving the initial structure of compact, high-zoom-ratio mid-wave infrared (MWIR) zoom lenses. Using differential analysis, the focal length variation process of zoom lenses under paraxial conditions is investigated, and a model for the focal power distribution and relative motion of three movable lens groups is established. The particle swarm optimization (PSO) algorithm is introduced into the zooming process analysis, and a program is developed in MATLAB to solve for the initial structure. This algorithm integrates physical constraints from lens analysis and evaluates candidate solutions based on key design parameters, such as total lens length, zoom ratio, Petzval field curvature, and focal length at tele end. The results demonstrate that the proposed method can efficiently and accurately determine the initial structure of compact MWIR zoom lenses. Using this method, a mid-wave infrared zoom lens with a zoom ratio of 50x, a total length of less than 530 mm, and the ratio of focal length to total length approximately 2:1 was successfully designed. The design validates the effectiveness and practicality of this method in solving the initial structure of zoom lenses that meet complex design requirements.