中国光学Issue(2)：293-300,8.DOI:10.3788/CO.20140702.0293
基于卡塞格林系统的红外制冷型长焦分档变倍光学系统的设计
Design of cooled infrared switch-zoom optical system with long effective focal length based on R-C system
摘要
Abstract
Based on the R-C system a cooled infrared swith-zoom optical system with long effective focal length is designed .The initial parameters are calculated and the components′focal power is deduced .Secondary im-aging structure is adopted , and relay lens is used to match the cold stop .Zoom is realized by switching the re-lay lens of the short focal length system and the long focal length system .The optimized design of optical sys-tem aberration is made .The optimized imaging results of the long effective focal length optical system and the short effective focal length optical system at different field of view are presented, and the modulation transfer functions within 0.8 field of view at 17 lp/mm of spatial frequency are greater than 0.4.Finally, correspond-ing precision analysis of the main structure is made and the results show that the structure is rational and the imaging quality is good .The optical system can meet actual requirement .关键词
红外分档变倍/卡塞格林系统/红外传函/成像质量Key words
infrared switch-zoom lens/R-C system/infrared MTF/imaging quality分类
信息技术与安全科学引用本文复制引用
李刚,杨晓许,张恒金,孙东岩..基于卡塞格林系统的红外制冷型长焦分档变倍光学系统的设计[J].中国光学,2014,(2):293-300,8.基金项目
西部之光博士基金资助项目 （）
