摘要
成像系统视场(FOV)与空间分辨率的矛盾是常规单孔径成像难以解决的问题,主要原因为大视场光学系统畸变明显,严重影响边缘视场角分辨率。采用并列式复眼和二次成像系统结构,通过多孔径镜头阵列对空间场景进行一次成像,再利用红外光纤束完成多个子眼像面拼接整合,最后通过中继系统实现拼接像与探测器耦合。实验结果表明:基于该技术搭建的光学探测系统可实现拼接大视场与子眼视场成像畸变保持一致(低于2%)、各视场角分辨率均匀,可有效实现大视场中波红外成像系统的大视场、小畸变、高分辨率成像。
The contradiction between the field of view(FOV)and spatial resolution of imaging systems cannot be solved easily via the conventional single-aperture imaging,primarily because an optical system with a large FOV presents significant distortion,which severely affects the angular resolution at the edge of the FOV.In this study,a parallel compound-eye and secondary-imaging-system structure is adopted,and a multi-aperture lens array is used to image the spatial scene once.Sub-eye image planes are pieced together,integrated using an infrared fiber bundle,and then coupled with a detector through a relay system.Experimental results show that an optical detection system based on this technology can achieve the same imaging distortion(less than 2%)between splicing large and sub-eye FOVs as well as a uniform angular resolution under all FOV angles,thus effectively achieving high-resolution mid-infrared imaging with small distortion in a large FOV.
作者
解娜
祁思胜
邱羽
李宇海
杨海波
陈嘉鑫
杨志勇
王锴
Xie Na;Qi Sisheng;Qiu Yu;Li Yuhai;Yang Haibo;Chen Jiaxin;Yang Zhiyong;Wang Kai(National Key Laboratory of Electromagnetic Space Security,Tianjin,300308,China;Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;School of Physics and Electronic Engineering,Jiangsu Normal University,Xuzhou 221116,Jiangsu,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2024年第20期140-144,共5页
Laser & Optoelectronics Progress
关键词
红外成像
多孔径镜头阵列
光纤束
小畸变
infrared photography
multi-aperture lens array
fiber bundle
small distortion
