基于阵列光学的快速多维度成像制导光学系统设计  

Design of a fast multi-dimensional imaging guidance optical system based on array optics

作　　者：史浩东 卢琦 赵义武[1] 王稼禹 赵晓 李英超[1] 付强[1] SHI Hao-dong;LU Qi;ZHAO Yi-wu;WANG Jia-yu;ZHAO Xiao;LI Ying-chao;FU Qiang(Jilin Provincial Key Laboratory of Space Optoelectronics Technology,Changchun University of Science and Technology,Changchun 130022,China;School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China;Northeast Industries Group Co.,Ltd.Changchun 130103,China)

机构地区：[1]长春理工大学吉林省空间光电技术重点实验室,吉林长春130022 [2]长春理工大学光电工程学院,吉林长春130022 [3]东北工业集团有限公司,吉林长春130103

出　　处：《中国光学（中英文）》2024年第6期1418-1430,共13页Chinese Optics

基　　金：吉林省教育厅科学技术研究项目(No.JJKH20230813KJ)。

摘　　要：针对传统偏振光谱成像方法难以适用于弹载平台的难题,本文提出了一种基于阵列光学的快速多维度成像制导光学方案。构建了通道分辨率与望远放大倍率的关联模型,实现了微透镜阵列、光谱滤光阵列和微纳偏振阵列探测器参数的精准匹配和高效利用。基于常规导引头和工业偏振探测器,设计了包含球形整流罩的多维度成像制导光学系统。系统采用4×4光场分割布局,在可见光波段内形成16个光谱通道,光谱分辨率为16 nm,实现了单光路、单探测器条件下同时高效获取0°、45°、90°、135°4个偏振方向偏振光谱图像数据。系统整体焦距为150 mm,筒长为145 mm。仿真结果表明,系统16个通道下全视场调制传递函数在奈奎斯特频率处均接近衍射极限,成像质量良好,满足弹载目标多维度探测与识别需求。To address the bottleneck that makes the conventional polarization spectral imaging method difficult to apply to the ballistic platform,a fast multi-dimensional imaging guidance optical system based on array optics is proposed.The correlation model between channel resolution and telescopic magnification is constructed.The precise matching and efficient utilization of the parameters of the microlens array,spectral filter array,and micro-nano-polarization array detector are realized.Based on the conventional guidance head and commercial polarization detector,a multi-dimensional imaging guidance optical system with spherical dome is designed.The system adopts a 4×4 optical field segmentation layout,forming 16 spectral channels through the visible light band with a spectral resolution of 16 nm.A polarization spectral data cube in four polarization directions,such as 0°,45°,90°,and 135°is acquired efficiently under the conditions of a single optical path and a single detector.The system has an effective focal length of 150 mm and a structure length of 145 mm.Simulation results show that the full-field modulation transfer function of the system is close to the diffraction limit at the Nyquist frequency for 16 channels.The imaging quality meets the requirements of bullet-loaded target multi-dimensional detection and identification.

关 键 词：亚像素成像系统 微透镜阵列 偏振光谱成像 孔径分割 

分 类 号：O435.1[机械工程—光学工程] O435.2[理学—光学] O436.3[理学—物理]