红外与毫米波学报2023，Vol.42Issue(6)：845-852,8.DOI:10.11972/j.issn.1001-9014.2023.06.018
基于直线运动机构的大变倍比红外变焦成像系统
An infrared zoom imaging system with large zoom ratio based on linear motion mechanism
摘要
Abstract
In order to meet the urgent need of large-scale search and accurate target recognition,an infrared zoom imaging system with large zoom ratio is developed.Two independently moving zoom lenses and one compensat-ing lens are designed,the large zoom ratio can be obtained by the cascade of two zoom lenses.According to the characteristics of multiple moving lenses and complex zoom curves,the zoom motion is realized by linear motion mechanism,and driven by linear motor integrated encoder and thread screw rod.The mechanical analysis of the system is carried out by the finite element simulation,and the maximum displacement of the lenses is 3.04×10-3 mm.The imaging system is suitable for the medium-wave infrared cooled 640×512 focal plane area-array detec-tor,and the zoom ratio is 55.The results of laboratory imaging and outfield imaging show that the system has a clear and good imaging quality with a continuous change in focal length from 6 mm to 330 mm,which verifies the performance of the system.The design is reasonable and reliable.The research findings of this paper have broad application prospects in search,tracking,reconnaissance,and surveillance.关键词
红外变焦成像系统/大变倍比/直线运动机构/直线电机Key words
infrared zoom imaging system/large zoom ratio/linear motion mechanism/linear motor分类
信息技术与安全科学引用本文复制引用
周潘伟,于洋,李范鸣,叶锡生..基于直线运动机构的大变倍比红外变焦成像系统[J].红外与毫米波学报,2023,42(6):845-852,8.基金项目
Supported by the National Pre-research Program during the 14th Five-Year Plan(514010405) （514010405）
