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Acta Photonica Sinica, Volume. 50, Issue 5, 24(2021)

Design and Realization of Visible/LWIR Dual-color Common Aperture Optical System

Zhanpeng MA1...2, Yaoke XUE1,4,5, Yang SHEN1, Chunhui ZHAO3, Canglong ZHOU1,2, Shangmin LIN1,2, and Hu WANG12 |Show fewer author(s)
Author Affiliations
  • 1Xi′an Institute of Optics and Precision Mechanism， Chinese Academy of Sciences， Xi′an709， China
  • 2University of Chinese Academy of Sciences， Beijing100049， China
  • 3Beijing Institute of Control Engineering， Beijing100190， China
  • 4Youth Innovation Promotion Association， Beijing100037， China
  • 5Beijing University of Aeronautics and Astronautics， Beijing100191， China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (16)
    Equations (9)
    References (14)
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    Figures & Tables(16)
    Structure of Cassegrain system

    Fig. 1. Structure of Cassegrain system

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    Structure of visible light

    Fig. 2. Structure of visible light

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    Refraction diagram of the dichroic beam splitter

    Fig. 3. Refraction diagram of the dichroic beam splitter

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    Structure of LWIR

    Fig. 4. Structure of LWIR

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    Structure of visible / LWIR dual-color integrated system

    Fig. 5. Structure of visible / LWIR dual-color integrated system

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    Encircled energy of visible and LWIR

    Fig. 6. Encircled energy of visible and LWIR

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    Spot diagram of visible and LWIR

    Fig. 7. Spot diagram of visible and LWIR

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    Distortion of visible and LWIR

    Fig. 8. Distortion of visible and LWIR

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    Preset tolerance values

    Fig. 9. Preset tolerance values

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    3D structure of dual-color integrated system

    Fig. 10. 3D structure of dual-color integrated system

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    Field test picture of the camera

    Fig. 11. Field test picture of the camera

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    • Table 1. Main parameters of optical system

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      Table 1. Main parameters of optical system

      ItemsVisible lightLWIR
      Effective aperture /mm＞120＞120
      Field of view /(°)33
      Wavelength range /μm0.5~0.87~10

    • Table 2. Initial structure of pre-system

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      Table 2. Initial structure of pre-system

      ItemsR1R2de12e22
      Value-280 mm-260 mm-70 mm17.3

    • Table 3. Diameter of different fields of two bands (with 80 percent of energy)

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      Table 3. Diameter of different fields of two bands (with 80 percent of energy)

      Field0°0.75°0.9°1.06°1.5°
      Visible light11 μm12 μm12.4 μm12.8 μm15.2 μm
      LWIR36 μm36 μm36 μm36 μm38 μm

    • Table 4. RMS Radius of different fields of two bands

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      Table 4. RMS Radius of different fields of two bands

      Field0°0.75°0.9°1.06°1.5°
      Visible light3.536 μm5.232 μm5.972 μm6.892 μm10.116 μm
      LWIR9.902 μm8.266 μm8.155 μm8.595 μm12.629 μm

    • Table 5. RMS spot radius tolerance analysis

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      Table 5. RMS spot radius tolerance analysis

      ProbabilityRMS Spot Radius / μm
      Visible lightLWIR
      90%7.05815.79
      80%6.73013.51
      50%5.74811.12
      20%4.9709.412
      10%4.9088.682
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    Zhanpeng MA, Yaoke XUE, Yang SHEN, Chunhui ZHAO, Canglong ZHOU, Shangmin LIN, Hu WANG. Design and Realization of Visible/LWIR Dual-color Common Aperture Optical System[J]. Acta Photonica Sinica, 2021, 50(5): 24

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    Paper Information

    Category: Imaging Systems

    Received: Jan. 1, 2021

    Accepted: Feb. 7, 2021

    Published Online: Jun. 22, 2021

    The Author Email:

    DOI:10.3788/gzxb20215005.0511002

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology