Infrared and Laser Engineering, Volume. 50, Issue 2, 20200178(2021)

Optimization design of secondary mirror for near space telescope

Fengchang Liu1...2, Wei Li1,2, Weiguo Zhao1, Kejun Wang1, Haibo Zhao1 and Guanyu Lin1 |Show fewer author(s)
Author Affiliations
  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130031, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(20)
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    • Table 1. [in Chinese]

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      Table 1. [in Chinese]

      NameRMSMassAxial displacementRadial displacement
      Secondary mirrorλ/50 ≤2 kg≤±0.01≤±0.01
    • Table 2. [in Chinese]

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      Table 2. [in Chinese]

      Materialsρ/kg·m−3E/GPa λ/W·mK−1α×10−6/K−1E/ρ×10−6/m λ/α×10−6/m·W−1(λ/α)·(E/ρ)
      Zerodur2530911.640.053632.81180
      Be185028721611.415518.92939
      RB-SiC30503301552.510864.66977
      M40J1560145DesignableDesignable93DesignableDesignable
    • Table 3. [in Chinese]

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      Table 3. [in Chinese]

      Initial structureMass/kgMaxdispaMaxdisprRMSy/nm Lightweight ratio
      Sector1.661.28e−57.21e−60.65869%
      Right triangle1.841.18e−57.43e−60.65866%
    • Table 4. [in Chinese]

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      Table 4. [in Chinese]

      VaribleDomainInitial valueOptimum value
      jin1[3,6]43
      Jin2[3,6]44.6
      jin3[3,6]44.3
      jin4[3,6]45.6
      jin5[4,8]66
      jingmian[3,6]44.7
      RMSy /nm 0.650.51
      M/kg 1.391.52
    • Table 5. [in Chinese]

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      Table 5. [in Chinese]

      Materialsρ/kg·m−3E/GPa λ/W·mK−1α×10−6/K−1E/ρ×10−6/m λ/α×10−6/m·W−1(λ/α)·(E/ρ)
      4J32810014114.72.517.45.9102.7
      TC444001097.48.924.70.819.8
    • Table 6. [in Chinese]

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      Table 6. [in Chinese]

      LoadPV/nm RMS/nm u/mm
      1g-x7.91.50.0028
      1g-y3.80.850.0004
      t=(20±3) ℃ 5.81.00.001
      Metricλ/10=63.2 λ/50=12.6 0.01
    • Table 7. [in Chinese]

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      Table 7. [in Chinese]

      OrderFrequency/HzFormation
      1203.8Swing at an angle of 10 ° with the Z axis
      2203.9Swing at an angle of 10 ° with the X axis
      3313.3Y-direction swing
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    Fengchang Liu, Wei Li, Weiguo Zhao, Kejun Wang, Haibo Zhao, Guanyu Lin. Optimization design of secondary mirror for near space telescope[J]. Infrared and Laser Engineering, 2021, 50(2): 20200178

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    Paper Information

    Category: Optical design

    Received: May. 14, 2020

    Accepted: --

    Published Online: Mar. 24, 2021

    The Author Email:

    DOI:10.3788/IRLA20200178

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