低公差敏感度的大变倍比极短总长中波红外变焦光学系统设计  

Design of a medium-wave infrared zoom optical system with low tolerance sensitivity,large zoom ratio,and extremely short total length

作　　者：李雨哲 胡源 霍家琦 张又予 高天元 LI Yu-zhe;HU Yuan;HUO Jia-qi;ZHANG You-yu;GAO Tian-yuan(Key Laboratory of Optoelectric Measurement and Optical Information Transmission Technology of Ministry of Education,School of Opto-electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学光电工程学院,光电测控与光信息传输技术教育部重点实验室,吉林长春130022

出　　处：《中国光学(中英文)》2025年第1期70-77,共8页Chinese Optics

基　　金：吉林省自然科学基金(No.20240101360JC)。

摘　　要：目前中波红外变焦系统在大变倍比,长焦距变焦条件下,难以在极短总长的条件下具备较低敏感度。针对这一问题,本文通过合理分配非球面和衍射面,采用独立组元低敏感度设计方法,设计出一套无需折叠光路,总长仅有337 mm的低敏感度中波红外变焦光学系统。通过降低各个组元的像差从而降低系统公差敏感度。该系统具有30倍大变倍比,可实现30~900 mm的长焦距连续变焦。该系统具有变倍比大、长焦距变焦、极短总长以及低敏感度并且全焦距范围内像质良好等优点,在狭小空间目标识别、跟踪、探测等方面,具有较大的应用优势。In response to the current problem of difficulty in achieving extremely short total length and low sensitivity in medium wave infrared zoom systems under conditions of large zoom ratio and long focal length,we design a low-sensitivity medium wave infrared zoom optical system with a total length of only 337 mm and no need for folding optical paths,through the rational allocation of aspherical and diffractive surfaces,as well as adopting a low sensitivity design method for independent components.By reducing the aberration of each component,the system tolerance sensitivity is reduced.The system achieves a 30×zoom ratio and continuous zoom with a long focal length of 30-900 mm.The system has advantages such as a large zoom ratio,long focal length zoom,extremely short total length,low sensitivity,and good image quality within the entire focal length range.It has significant application advantages for military applications such as target recognition,tracking,and detection in narrow spaces.

关 键 词：红外系统 长焦距变焦 大变倍比 极短总长 低敏感度 

分 类 号：TH216[机械工程—机械制造及自动化]