摘要
为满足高光谱成像仪在365~1000 nm波段范围的成像需求,设计了一款中等视场角、大相对孔径的复消色差物镜。从初级色差理论出发,分析了可见近红外波段的玻璃材料的色散特性,为光学设计选择玻璃材料提供了理论依据。设计结果表明:通过对低色散氟冕玻璃的合理使用,物镜在宽波段内的色差得到了良好校正,二级光谱仅为0.014 mm。物镜焦距18 mm,相对孔径1∶2.4,视场角30°,成像质量接近衍射极限,满足高光谱成像仪的设计要求。
An apochromatic objective with a middle field of view and a large relative aperture was designed to satisfy the imaging demand of hyper-spectral imager from365n m to1000n m bands.Based on the primary aberration theory,the dispersion properties of glass materials in the visible and near infrared bands were analyzed,which provides a reference for the selection of glass materials in optical design.The results of optical design show that through the rational use of fluorine crown glass,chromatic aberration has been corrected successfully,and secondary spectrum is only0.014m m.The objective has a focal length of18m m,a relative aperture of1:2.4and a field of view of30°,and the imaging quality is close to the diffraction limit,which meets the design requirement of hyper-spectral imager.
作者
桂立
丁学专
赵航斌
郝世菁
姚金军
刘银年
GUI Li;DING Xue-zhuan;ZHA0 Hang-bin;HA0 Shi-jing;YA0 Jin-jun;LIU Yin-nian(Key Laboratory of Infrared System Detection and Imaging Technologies,Shanghai Institute of Technical Physics,Chinese A cademy of Sciences,Shanghai 200083 ,China;University of Chinese A cademy of Sciences,Beijing 100049,China;Qidong Optoelectronic Remote Sensing Center,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Qidong 226200,China)
出处
《激光与红外》
CAS
CSCD
北大核心
2018年第3期384-388,共5页
Laser & Infrared
基金
国家重点研发计划项目(No.2016YFB0500400)
国家863计划项目(No.2014AA123202)
国家高分辨率对地观测系统重大专项项目(No.A0106/1112)资助.
关键词
光学设计
二级光谱
像方远心
高光谱
optical design
secondary spectrum
telecentric structure
hyperspectral
