大相对孔径、长焦距的紫外告警光学系统设计  

Design of Ultraviolet Warning Optical System with Large Relative Aperture and Long Focal Length

作　　者：曹桂丽[1] 刘芳芳 贾永丹[1] 张倩[1] 徐崇斌 Cao Guili;Liu Fangfang;Jia Yongdan;Zhang Qian;Xu Chongbin(Beijing Institute of Space Mechnics and Electricity,Beijing 100049,China)

机构地区：[1]北京空间机电研究所

出　　处：《激光与光电子学进展》2019年第12期186-189,共4页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11874087)

摘　　要：利用ZEMAX软件设计了一款大相对口径、长焦距的远心紫外告警光学系统。光学系统包含6片球面透镜,总长约为154mm。其中光学系统焦距为100mm,相对孔径为1∶2,视场角为10°。采用具有负折射率温度系数的CaF2作为负透镜进行热补偿。结果表明:在-10~40℃内各视场平均光学调制传递函数在10lp/mm处高于0.4,最大点列图方均根半径小于50μm。该系统具有成像质量好、结构紧凑、温度适应范围广的特点,适用于紫外告警相机。A telecentric ultraviolet warning optical system with a large relative aperture and a long focal length is designed using ZEMAX.This optical system contains six pieces of spherical lenses and has a total length of 154 mm.The system has a focal length of 100 mm,a relative aperture of 1:2,and a field of view angle of 10°.CaF2 with a negative temperature coefficient of the refractive index is used as a concave lens for thermal compensation.The result shows that the average light modulation transfer function of each field of view is>0.4 at 10 lp/mm.Further,the biggest root-mean-square radius of the spot diagrams is smaller than 50μm.With the advantages of excellent imaging quality,compact configuration,and wide temperature adaptability,the system is suitable for ultraviolet warning cameras.

关 键 词：光学设计 大相对口径 无热化 紫外告警 

分 类 号：TN23[电子电信—物理电子学]