双透镜脉冲展宽分幅相机成像特性研究  

Imaging Performance of Double-Lens Pulse-Dilation Framing Camera

作　　者：雷云飞[1] 刘进元[1] 蔡厚智[1] 黄峻堃 王勇[1] 邓珀昆 Lei Yunfei;Liu Jinyuan;Cai Houzhi;Huang Junkun;Wang Yong;Deng Pokun(College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,Guangdong,China)

机构地区：[1]深圳大学物理与光电工程学院,广东深圳518060

出　　处：《激光与光电子学进展》2022年第18期478-486,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(11775147);中国博士后科学基金(2018M643183)。

摘　　要：报道了一种采用双磁透镜校正像差的脉冲展宽分幅相机,并对其空间分辨率、场曲及象散特性进行分析。当缩放比例为2∶1时,采用单透镜的分幅相机工作面的半径为15 mm,离轴15 mm处空间分辨率为2 lp/mm;采用双透镜对像差进行校正后,工作面的半径提升至30 mm,离轴15 mm处空间分辨率提升为5 lp/mm。通过实验和仿真对单透镜和双透镜成像系统的像场弯曲进行拟合,场曲面离轴15 mm处成像点与轴上像点的轴向距离在单透镜成像系统中约为11 cm,在双透镜成像系统中约为3 cm。对双透镜系统的象散进行分析,并对子午像面和弧矢像面进行拟合,相机的子午空间分辨率和弧矢空间分辨率均可达到10 lp/mm。In this study,a pulsedilation framing camera using double magnetic lenses to correct aberrations is reported.The spatial resolution,field curvature,and astigmatism characteristics of the camera were analyzed.When the imaging ratio is 2:1,the radius of the working area of the framing camera with a single magnetic lens is 15 mm,and the spatial resolution at a 15-mm offaxis distance is 2 lp/mm.When double magnetic lenses are used in this system,some aberrations are corrected,the radius of the working area is 30 mm,and the spatial resolution at a 15-mm offaxis distance is 5 lp/mm.The field curvature of the camera with a single lens and double lenses was measured and simulated.In a singlelens imaging system,the axial distance between the imaging point at 15-mm offaxis of the field surface and the image point on the axis is around 11 cm,while in a doublelens imaging system,it is about 3 cm.The astigmatism of the doublelens system is analyzed.In the experiment,sagittal and tangential image surfaces are fitted,and the sagittal and tangential resolutions can reach 10 lp/mm.

关 键 词：超快诊断 脉冲展宽 磁透镜 空间分辨率 场曲 象散 

分 类 号：TN143[电子电信—物理电子学]