摘要
设计了一套WCE光学系统,对可见光波段成像。采用反远距的光学结构形式,共使用4片透镜,引入两个Forbes非球面来提高系统的整体性能,并做到仪器的小型化。系统视场角150°,相对孔径1/3,入瞳直径0.35 mm,总长8.3 mm。各视场的调制传递函数曲线在奈奎斯特频率143 lp/mm时均高于0.6,分辨率较高;各视场的点列图几乎都在艾里斑之内;彗差、像散、场曲、畸变、倍率色差等轴外像差也得到了很好的校正,成像质量较好,能够满足WCE光学系统的要求。
A set of WCE optical system is designed for visible light imaging.the system adopts the optical structure of reverse distance and uses 4 lenses in total.Two Forbes aspherical surfaces are introduced to improve the overall performance of the system and to achieve miniaturization of the instrument.The field angle of the system is 150°,the relative aperture is 1/3,the diameter of the pupil is 0.35mm,and the total length is 8.3mm.The modulation transfer function curves of each field of view are higher than 0.6 at the Nyquist frequency of 143lp/mm with a higher resolution.The spot diagram of each field of view is almost within the Airy disk.Aberrations such as coma,astigmatism,field curvature,aberration and chromatic aberration have also been well corrected.The imaging quality is better,which can meet the requirements of WCE optical system.
作者
张欣婷
亢磊
吴倩倩
ZHANG Xin-ting;KANG Lei;WU Qian-qian(School of Optical and Electronic Information,Changchun University of Science and Technology,Changchun 130012,China;CRRC Changchun Railway Vehicles Co.,Ltd.,Changchun 130062,China)
出处
《激光与红外》
CAS
CSCD
北大核心
2019年第5期589-592,共4页
Laser & Infrared
基金
吉林省科技厅重点科技研发项目(No.20180201044YY)资助
