• Infrared and Laser Engineering
  • Vol. 50, Issue 3, 20200220 (2021)
Chunyu Wang, Cong Wang, Jinchuan Niu, Yinglong Zhao, and Shengjie Zhang
Author Affiliations
  • Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China
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    DOI: 10.3788/IRLA20200220 Cite this Article
    Chunyu Wang, Cong Wang, Jinchuan Niu, Yinglong Zhao, Shengjie Zhang. Passive athermal integrated design and verification analysis for the optical lens of aerial camera[J]. Infrared and Laser Engineering, 2021, 50(3): 20200220 Copy Citation Text show less
    2D layout of the optical system
    Fig. 1. 2D layout of the optical system
    Schematic diagram of heat elimination part of the optical system
    Fig. 2. Schematic diagram of heat elimination part of the optical system
    Curve of mirror spacing with temperature
    Fig. 3. Curve of mirror spacing with temperature
    Schematic diagram of heat dissipation components
    Fig. 4. Schematic diagram of heat dissipation components
    Schematic diagram of finite element analysis of heat dissipation part
    Fig. 5. Schematic diagram of finite element analysis of heat dissipation part
    Schematic diagram of heat dissipation test piece
    Fig. 6. Schematic diagram of heat dissipation test piece
    Schematic diagram of heat dissipation effect verification test
    Fig. 7. Schematic diagram of heat dissipation effect verification test
    ProjectIndex
    f/mm 130
    Half-field/(°)38
    MTF@100 lp/mm≥0.30
    Working temperature/℃20±5
    Table 1. [in Chinese]
    LensRSpacingMaterial
    1#154.651 59.501 11.835 19.725 H-FK61
    2#90.708 1018.40 20.71 20.2 H-ZLAF53B
    3#512.971 37.814 7.89 32.547 H-FK61
    Glued mirror 14#162.108 −66.032 13.808 0 H-FK61
    5#−66.032 105.814 4.931 5.041 H-ZBAF16
    6#83.921 −60.365 14.794 25.581 H-FK61
    Glued mirror 27#−255.57 −36.835 22.684 0 H-FK61
    8#−36.835 −77.799 6.904 0.2 H-LAK12
    9#136.937 −172.60 23.671 0.2 H-FK61
    10#929.987 84.166 7.89 0.592 H-LAF10LA
    11#84.166 129.24 14.7945 7.061 H-ZF5
    12#−56.503 −165.64 10.849 0.2 H-LAFL5
    13#2639.82 −230.89 29.588H-ZF52A
    Table 2. [in Chinese]
    Temperature/℃MTF design value
    15
    20
    25
    Table 3. [in Chinese]
    Temperature/℃1516171819202122232425
    Variation of spacing 1−0.016−0.013−0.01−0.007−0.00300.0030.0070.010.0130.016
    Variation of spacing 20.0160.0130.010.0070.0030−0.003−0.007−0.01−0.013−0.016
    Table 4. [in Chinese]
    Temperature/℃MTF after heat elimination compensation design
    15
    20
    25
    Table 5. [in Chinese]
    Temperature/℃Displacement of lens 5/μm Displacement of lens 6/μm Distance variation between lenses 5 and 6/μm
    15−2.506−19.14−16.634
    17−1.277−11.5−10.223
    19−0.4952−3.82−3.3248
    20000
    210.49843.8483.3496
    231.49211.5110.018
    252.49719.1916.693
    Table 6. [in Chinese]
    Temperature/℃15171920212325
    Variation of mirror spacing D/μm Theoretical value−16.634−10.223−3.32403.34910.01816.693
    Measured value−17.333−10.8241−3.72603.547610.41515.842
    Difference/μm−0.699−0.6011−0.40200.19860.397−0.851
    Table 7. [in Chinese]
    Temperature/℃System wavefront and MTF after heat dissipation
    15
    20
    25
    Table 8. [in Chinese]
    Temperature/℃System wavefront and MTF after heat dissipation
    15
    20
    25
    Table 9. [in Chinese]
    Temperature/℃System wavefront and MTF after heat dissipation
    15
    20
    25
    Table 10. [in Chinese]
    Chunyu Wang, Cong Wang, Jinchuan Niu, Yinglong Zhao, Shengjie Zhang. Passive athermal integrated design and verification analysis for the optical lens of aerial camera[J]. Infrared and Laser Engineering, 2021, 50(3): 20200220
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