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基于阵列光学的快速多维度成像制导光学系统设计

史浩东 卢琦 赵义武 王稼禹 赵晓 李英超 付强

史浩东, 卢琦, 赵义武, 王稼禹, 赵晓, 李英超, 付强. 基于阵列光学的快速多维度成像制导光学系统设计[J]. 中国光学(中英文). doi: 10.37188/CO.2023-0206
引用本文: 史浩东, 卢琦, 赵义武, 王稼禹, 赵晓, 李英超, 付强. 基于阵列光学的快速多维度成像制导光学系统设计[J]. 中国光学(中英文). doi: 10.37188/CO.2023-0206
SHI Hao-dong, LU Qi, ZHAO Yi-wu, WANG Jia-yu, ZHAO Xiao, LI Ying-chao, FU Qiang. Design of a fast multidimensional imaging guidance optical system based on array optics[J]. Chinese Optics. doi: 10.37188/CO.2023-0206
Citation: SHI Hao-dong, LU Qi, ZHAO Yi-wu, WANG Jia-yu, ZHAO Xiao, LI Ying-chao, FU Qiang. Design of a fast multidimensional imaging guidance optical system based on array optics[J]. Chinese Optics. doi: 10.37188/CO.2023-0206

基于阵列光学的快速多维度成像制导光学系统设计

doi: 10.37188/CO.2023-0206
基金项目: 吉林省教育厅科学技术研究项目(No. JJKH20230813KJ)
详细信息
    作者简介:

    史浩东(1989—),男,吉林长春人,博士,副研究员,博士生导师,主要从事先进光学系统设计及多维度探测方面的研究。E-mail:shihaodong08@163.com

    卢 琦(1999—),男,广西桂林人,硕士研究生,2021年于长春理工大学获得学士学位,主要从事光学系统设计及探测制导方面的研究。E-mail:luqi9942@163.com

  • 中图分类号: O435.1;O435.2;O436.3

Design of a fast multidimensional imaging guidance optical system based on array optics

Funds: Supported by
More Information
  • 摘要:

    针对传统偏振光谱成像方法难以适用于弹载平台的瓶颈,提出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16 nm,实现单光路、单探测器条件下0°、45°、90°、135°等四个偏振方向的偏振光谱图像数据立方体同时高效获取;系统整体焦距150 mm,筒长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。

     

  • 图 1  系统组成示意图

    Figure 1.  System composition diagram

    图 2  光学系统符号示意图

    Figure 2.  Symbolic diagram of the optical system

    图 3  不同空间分辨率下微透镜阵列子单元通光孔径与望远单元放大倍率关系曲线

    Figure 3.  The relationship between the aperture of the sub-unit of the microlens array and the telescope unit magnification at different spatial resolutions

    图 4  光谱滤光阵列透过率曲线

    Figure 4.  Schematic diagram of spectral filter array channel

    图 5  探测器区域划分示意图

    Figure 5.  Schematic diagram of detector area division

    图 6  微透镜阵列像方远心光路原理图

    Figure 6.  Schematic diagram of microlens array image square telecentric optical circuit

    图 7  光学系统设计结果三维图

    Figure 7.  Three-dimensional diagram of optical system design results

    图 8  光学系统16个光谱通道的MTF

    Figure 8.  MTF of 16 spectral channels of the optical system

    图 9  光学系统16个光谱通道归一化视场下的畸变图

    Figure 9.  Distortion map of 16 spectral channels in the normalized field of view of the optical system

    图 10  光学系统16个光谱通道能量集中度曲线

    Figure 10.  The energy concentration curve of 16 spectral channels of the optical system

    表  1  光学系统技术指标

    Table  1.   Technical index of the optical system

    参数 数值
    有效焦距/mm 150
    入瞳孔径/mm 17.25
    空间分辨率/m 0.25@10 km
    视场/mrad 5.34×5.34
    工作波长/nm 450-706
    光谱分辨率/nm 16
    探测器靶面 4096×3000
    像元尺寸/μm 3.45
    下载: 导出CSV

    表  2  光学系统公差设置

    Table  2.   Optical system tolerance settings

    分析对象 公差类型 数值
    望远单元主镜次镜
    XY方向偏心/mm±0.08±0.08
    Z方向厚度/mm±0.025±0.025
    XY方向倾斜/(°)±0.1±0.1
    二次曲率系数±0.001±0.001
    曲率半径/mm±0.001±0.001
    微透镜阵列位置精度偏心/mm±0.005
    厚度/mm±0.025
    单元透镜倾斜/(′)±0.3
    不规则度±0.2
    曲率半径/mm±0.01
    光谱滤光阵列位置精度偏心/mm±0.005
    光谱通道倾斜/(′)±0.3
    不规则度±0.2
    厚度/mm±0.01
    常规透镜折射率±0.0008
    光圈数±2
    厚度/mm±0.025
    不规则度±0.25
    阿贝数/%0.08
    元件倾斜/(′)±0.8
    表面倾斜/(′)±0.8
    元件偏心/mm±0.008
    表面偏心/mm±0.008
    下载: 导出CSV

    表  3  蒙特卡罗公差分析结果

    Table  3.   Monte Carlo tolerance analysis results

    通道 RMS光斑半径/μm 通道 RMS光斑半径/μm
    90% 90%
    通道1 5.936 通道9 4.737
    通道2 4.927 通道10 2.899
    通道3 4.786 通道11 2.994
    通道4 5.723 通道12 4.938
    通道5 4.880 通道13 5.885
    通道6 3.087 通道 14 5.047
    通道7 3.007 通道15 5.296
    通道8 4.895 通道16 5.821
    下载: 导出CSV
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