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激光准直系统中的杂散光分析与抑制

宋延嵩 安岩 李欣航 董科研 姜会林

宋延嵩, 安岩, 李欣航, 董科研, 姜会林. 激光准直系统中的杂散光分析与抑制[J]. 中国光学(中英文), 2016, 9(6): 663-670. doi: 10.3788/CO.20160906.0663
引用本文: 宋延嵩, 安岩, 李欣航, 董科研, 姜会林. 激光准直系统中的杂散光分析与抑制[J]. 中国光学(中英文), 2016, 9(6): 663-670. doi: 10.3788/CO.20160906.0663
SONG Yan-song, AN Yan, LI Xin-hang, DONG Ke-yan, JIANG Hui-lin. Analyzing and suppressing of stray light in laser collimating system[J]. Chinese Optics, 2016, 9(6): 663-670. doi: 10.3788/CO.20160906.0663
Citation: SONG Yan-song, AN Yan, LI Xin-hang, DONG Ke-yan, JIANG Hui-lin. Analyzing and suppressing of stray light in laser collimating system[J]. Chinese Optics, 2016, 9(6): 663-670. doi: 10.3788/CO.20160906.0663

激光准直系统中的杂散光分析与抑制

基金项目: 

长春理工大学青年科学基金项目 No.XQNJJ-2013-12

吉林省教育厅“十三五”科学技术研究项目 No.2016368

详细信息
    作者简介:

    宋延嵩(1983-),男,吉林长春人,博士,研究员,主要从事光电成像跟踪与空间激光通信方面的研究。E-mail:songyansong2006@126.com

    通讯作者:

    安岩(1986-),男,吉林长春人,博士,助理研究员,主要从事光学系统设计、杂散光抑制与分析、光谱仪系统设计等方面的研究。E-mail:anyan_7@126.com

  • 中图分类号: O439

Analyzing and suppressing of stray light in laser collimating system

Funds: 

Supported by Young Science Foundation of CUST No.XQNJJ-2013-12

The 13th Five-Year Plan Project of Jilin provincial Science and Technology Research No.2016368

More Information
  • 摘要: 针对不同光学系统中存在的杂散光所造成的假信号或信号饱和影响,本文结合像面照度分析和消光环抑制的方法,对准直系统进行分析,找到产生杂散光的主要原因,设计了3种不同结构的消光环以消除杂散光。仿真实验结果确定了最优形式的消光环结构,边缘杂散光抑制最大下限值为0.38%,平均抑制值5.68×10-4%;以此模型为基础,进行了杂散光抑制实验。实验结果表明,带有消光环结构的准直系统可以有效抑制杂散光,保证了后续光学系统的功能实现,对其他杂散光抑制系统具有借鉴作用。

     

  • 图 1  准直系统光路仿真图

    Figure 1.  Light path simulation diagram of the collimating system

    图 2  小范围失对准像面仿真图

    Figure 2.  Simulation image of small misalignments

    图 3  大范围失对准像面仿真图

    Figure 3.  Simulation image of large misalignments

    图 4  准直镜光路图

    Figure 4.  Light path diagram of collimating system

    图 5  最大视场下的光线光路示意图

    Figure 5.  Light path diagram at the maximum aperture

    图 6  口径不匹配的杂散光像面仿真图

    Figure 6.  Image plane simulation diagram of stray light caused by mismatching aperture

    图 7  3种消光环结构示意图

    Figure 7.  Schematic diagram of three kinds of right-angle extinction rings

    图 8  30°直角消光环结构

    Figure 8.  Extinction ring structure of right-angle with 30°

    图 9  60°直角消光环结构

    Figure 9.  Extinction ring structure of right-angle with 60°

    图 10  60°全等消光环结构

    Figure 10.  Extinction ring of congruent angle with 60°

    图 11  失对准下的杂散光像面图

    Figure 11.  Stray light image plane diagram at the condition of misalignments

    图 12  口径不匹配下的杂散光像面图

    Figure 12.  Stray light image plane diagram at the condition of mismatching aperture

    图 13  杂散光抑制后像面图

    Figure 13.  Image plane diagram after the stray light suppression

    表  1  准直系统光学参数

    Table  1.   Optical parameters of the collimating system

    IndexValue
    Object NA0.22
    Field/μm400
    Wavelength/μm1.064
    The interval between two lens/mm59.27
    下载: 导出CSV

    表  2  不同视场下的光束出射角度与极限角度

    Table  2.   Divergence angle and limit angle of exit rays at different fields

    The normalized field of viewThe divergence angleof exit rays θ1/(°)The limit angleof exit rays θ2/(°)
    002.89
    0.2020.592.42
    0.4041.151.93
    0.451.271.72
    0.51.391.60
    0.521.451.54
    0.531.471.48
    0.541.491.46
    0.551.521.47
    0.6021.621.44
    0.82.020.97
    12.280.45
    下载: 导出CSV

    表  3  3种消光环结构抑制效果表

    Table  3.   Suppression effect of three kinds of the extinction rings

    No.NameLargest degree of inhibitionon stray light/%Average degree of inhibition on stray light/%
    1Extinction ring of right-angle with 30°0.41.10×10-3
    2Extinction ring of right-angle with 60°0.385.68×10-4
    3Extinction ring of congruent angle with 60°0.631.49×10-3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-05-11
  • 修回日期:  2016-07-13
  • 刊出日期:  2016-12-01

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