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大口径光学窗口结构及支撑技术

张庆鹏 谭毅 任戈 刘顺发

张庆鹏, 谭毅, 任戈, 等. 大口径光学窗口结构及支撑技术[J]. 强激光与粒子束, 2018, 30: 121003. doi: 10.11884/HPLPB201830.180196
引用本文: 张庆鹏, 谭毅, 任戈, 等. 大口径光学窗口结构及支撑技术[J]. 强激光与粒子束, 2018, 30: 121003. doi: 10.11884/HPLPB201830.180196
Zhang Qingpeng, Tan Yi, Ren Ge, et al. Technology for the structure and supporting form of large aperture optic window[J]. High Power Laser and Particle Beams, 2018, 30: 121003. doi: 10.11884/HPLPB201830.180196
Citation: Zhang Qingpeng, Tan Yi, Ren Ge, et al. Technology for the structure and supporting form of large aperture optic window[J]. High Power Laser and Particle Beams, 2018, 30: 121003. doi: 10.11884/HPLPB201830.180196

大口径光学窗口结构及支撑技术

doi: 10.11884/HPLPB201830.180196
基金项目: 国防科技创新特区资助项目
详细信息
    作者简介:

    张庆鹏(1992—), 男,博士研究生,从事光学窗口结构及支撑技术研究; zhangqingpeng16@mails.ucas.ac.cn

    通讯作者:

    谭毅(1979—),男,研究员,从事光束控制技术方面研究; tandeman@126.com

  • 中图分类号: O439

Technology for the structure and supporting form of large aperture optic window

  • 摘要: 为减小大口径光学窗口对系统入射光线的影响,提高光学窗口性能及光学系统成像质量,提出了基于普通环带支撑的中间环带辅助支撑形式,并在不同口径、径厚比及遮拦比状态下比较两种支撑方式对光学系统波前误差的影响。与普通环带支撑方式相比,采用中间环带辅助支撑形式可以降低90%的由窗口引入的波前误差,该方式对径厚比为100/1的窗口的支撑效果可以达到普通支撑方式下径厚比为100/3的窗口类似的支撑效果。因此,中间环带辅助支撑形式可以有效提高窗口支撑效率、减小窗口厚度及质量、降低窗口对入射光线的体吸收率。
  • 图  1  窗口模型及网格划分

    Figure  1.  Model and mesh of optical window

    图  2  不同光学材料透过及吸收率与材料厚度及波长之间的关系

    Figure  2.  Relationship between the transmittance, thickness and wavelength of different optical materials

    图  3  光学窗口受力分析

    Figure  3.  Force analysis for optical window

    图  4  支撑方式示意图

    Figure  4.  Diagram of supporting forms

    图  5  不同窗口厚度下两种支撑方式对波前的影响

    Figure  5.  Influence of two kinds of supporting forms on wavefront under different thickness

    图  6  等径厚比下两种支撑方式对波前的影响

    Figure  6.  Influence of the two kinds of supporting forms on wavefront under same diameter-thickness ratio

    图  7  等遮拦比状态下两种支撑方式对波前影响

    Figure  7.  Influence of two kinds of supporting forms on wavefront under the condition of same obscuration ratio

    表  1  窗口厚度为20 mm时,两种支撑方式对波前的影响

    Table  1.   Influence of two supporting forms on wavefront when the thickness of window is 20 mm

    supporting form PV value/λ RMS/λ
    ordinary zonal support 0.072 0.025
    intermediate auxiliary zonal support 0.002 3 0.000 77
    下载: 导出CSV

    表  2  等遮拦比状态下两种支撑方式对窗口模态的影响

    Table  2.   Influence on mode of two kinds of supporting forms

    mode frequency response/Hz
    ordinary zonal supporting form intermediate zonal auxiliary supporting form
    1 311 742
    2 638 760
    3 638 760
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-07-20
  • 修回日期:  2018-11-12
  • 刊出日期:  2018-12-15

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