微光夜视鱼眼镜头的研究与设计  

Research and Design of Low-Light Level Night-Vision Fisheye Lens

作　　者：高秋娟 徐云辉[1] 姜华[1] 狄世超 贺永喜 GAO Qiu-juan;XU Yun-hui;JIANG Hua;DI Shi-chao;HE Yong-xi(Beijing Institute of Space launch Technology,Beijing 100076,China)

机构地区：[1]北京航天发射技术研究所,北京100076

出　　处：《光学与光电技术》2021年第4期80-85,共6页Optics & Optoelectronic Technology

摘　　要：为了满足在夜晚低照度环境下对鱼眼镜头的需求,利用ZEMAX光学软件设计出了一款适用于2 inch微光夜视相机的微光夜视鱼眼镜头。该结构包含窗口透镜,共由7组10片透镜组成,其中除窗口外,其余全部为光学玻璃,而且选用的玻璃材料均为常用、性能良好、价格便宜的牌号。有效焦距为9.5 mm,相对孔径为1/1.8,视场角为170°,像高为21mm,光学系统总长为90 mm,最大口径为56 mm,后工作距离为10.4 mm。在分辨率46 lp/mm处,全视场范围内的MTF值均大于0.36,全视场f-θ畸变量的绝对值小于30%,场曲小于0.15 mm,镜头有较好的成像质量。In order to meet the needs of fisheye lens in low illumination environment,a low-light level night-vision fisheye lens applied to 2 inch low-light level night-vision camera is designed with ZEMAX. The structure includes window lens,which consists of 7 groups of 10 lenses. All of the lens are optical glasses except window lens. It is characterized by common,good performance and low cost. The effective focal length is 9.5 mm,F number is 1.8,field of view(FOV)is170°,image height is 21 mm,the optical system total length is 90 mm,the maximum diameter is 56 mm,and the back working distance is 10.4 mm. Its modulated transfer function(MTF)in all fields is higher than 0.36 at 46 lp/mm. The absolute value of the full FOV f-θ distortion is less than 30%,the field curvature is less than 0.15 mm. The image quality of the lens is very good.

关 键 词：光学设计 微光夜视 鱼眼镜头 场曲 畸变 

分 类 号：TN942.2[电子电信—信号与信息处理]