Infrared and Laser Engineering, Volume. 49, Issue 3, 0314002(2020)

Realized large field of view infrared imaging system of single lens with external field splicing

Qiusha Shan1,2, Xiuqin Su1, Jing Duan1,2, Liang Zhou1, Kai Liu1, Peipei Yan1, and Kai Jiang1
Author Affiliations
  • 1Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi’an 710119, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(12)
    Diagram of system principle
    Layout of porous rotating mirror
    Diagram of external field splicing
    Structure diagram of mid-wave infrared optical system
    MTF curve diagram
    System spot diagram
    Principle prototype physical map
    Splicing image acquired by the principle prototype
    Splicing diagram of “cross 1”
    • Table 1. Basic parameters of the optical system

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      Table 1. Basic parameters of the optical system

      ParameterValue
      Wavelength/μm3.7−4.8
      Aperture/mm20
      Focal length/mm40
      Fnumber 2
      Full field of view21.74°×17.46°(27.88°)
    • Table 2. System structure parameters

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      Table 2. System structure parameters

      Serial numberRadiusThicknessSurface typeGlass
      124.5959.72SphereSi
      239.3353.36Sphere
      356.81710SphereGe
      414.88110.49Asphere
      51 620.8656.17SphereSi
      6−40.23223.58Sphere
      7−54.7279.86AsphereGe
      8−102.9793.19Sphere
      9−63.0857.54SphereSi
      10−28.9329.79Sphere
      11−43.214SphereGe
      12−134.5892Asphere
      131 051.7766.66SphereSi
      14−49.9145.9Sphere
      15302.6794SphereGe
      16Infinity5Sphere
    • Table 3. Comparative analysis of two splicing methods

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      Table 3. Comparative analysis of two splicing methods

      Object space spliceAdvantagesDisadvantagesSame points
      "Cross 1"No loss of frame frequency, no motion mechanismTwo optical systems,two thermal imagers,two processing systems;relatively complex structureExist of blind areas or overlapping field of view
      Front rotating mirror and mirrorOne optical system,one thermal imager,one processing system;simple splicingLoss of frame frequency, need motion mechanism
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    Qiusha Shan, Xiuqin Su, Jing Duan, Liang Zhou, Kai Liu, Peipei Yan, Kai Jiang. Realized large field of view infrared imaging system of single lens with external field splicing[J]. Infrared and Laser Engineering, 2020, 49(3): 0314002

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    Paper Information

    Received: Nov. 5, 2019

    Accepted: --

    Published Online: Apr. 22, 2020

    The Author Email:

    DOI:10.3788/IRLA202049.0314002

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