• Infrared and Laser Engineering
  • Vol. 51, Issue 3, 20210407 (2022)
Minda Xu1, Xue Tian2, Rui Yao1, Haosu Xiao1, and Cheng Chen1
Author Affiliations
  • 1Beijing Institute of Electronic System Engineering, Beijing 100854, China
  • 2Beijing Institute of Remote Sensing Device, Beijing 100854, China
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    DOI: 10.3788/IRLA20210407 Cite this Article
    Minda Xu, Xue Tian, Rui Yao, Haosu Xiao, Cheng Chen. Design of two-dimensional image space scanning cooled infrared optical system with tilt mirror[J]. Infrared and Laser Engineering, 2022, 51(3): 20210407 Copy Citation Text show less
    Object space scanning optical system with tilt mirror
    Fig. 1. Object space scanning optical system with tilt mirror
    Image space scanning optical system with tilt mirror
    Fig. 2. Image space scanning optical system with tilt mirror
    two-dimensional scanning optical system with tilt mirror
    Fig. 3. two-dimensional scanning optical system with tilt mirror
    Structure of the optical systems
    Fig. 4. Structure of the optical systems
    Image quality and window blocking of each field of view
    Fig. 5. Image quality and window blocking of each field of view
    [in Chinese]
    Fig. 5. [in Chinese]
    No.Type of surfaceThickness/mmTilt x/(°) Tilt y/(°)
    1Standard170
    2Coordinate break0−412
    3Coordinate break0−412
    4Coordinate break−142.554900
    5Coordinate break0450
    6Optical window
    7Coordinate break22−450
    8Object lens
    9Coordinate break0−900
    10Coordinate break041−2
    11Coordinate break041−2
    12Coordinate break0−412
    13Scanning mirror
    14Coordinate break0−412
    15Image lens
    Table 1. Design parameters of the optical system
    Tilt mirror angleOptical axis directionMTF (17 lp/mm)Window pass ratio
    Azimuth 2°, pitch -4°Azimuth 4.9°, pitch -14.7°0.485.74%
    Azimuth 2°, pitch -2°Azimuth 5.02°, pitch -7.45°0.5899.43%
    Azimuth 2°, pitch 2°Azimuth 5.37°, pitch 7.2°0.5798.23%
    Azimuth 2°, pitch 4°Azimuth 5.61°, pitch 14.43°0.478.64%
    Table 2. Performance of the system under different tilt angles
    Minda Xu, Xue Tian, Rui Yao, Haosu Xiao, Cheng Chen. Design of two-dimensional image space scanning cooled infrared optical system with tilt mirror[J]. Infrared and Laser Engineering, 2022, 51(3): 20210407
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