Infrared and Laser Engineering, Volume. 50, Issue 6, 20200494(2021)

Model and compensation method of image point drift caused by self-heating of industrial camera

Jiahe Chai, Mingli Dong, Peng Sun, and Bixi Yan
Author Affiliations
  • Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing 100192, China
  • show less
    Figures & Tables(14)
    Temperature change of the imaging device and the main board after turning on
    3D model of AVT GT5120 camera
    Camera finite element model
    Camera transient thermal stress analysis results
    Axial offset of the camera causes the imaging optical path to change
    Image point drift caused by axial optical path changes
    Schematic diagram of image point shift caused by radial expansion
    Temperature changes of the experimental device and its components
    In the self-heating state, the coordinate value of each quadrant point after compensation is compared with the experimental measurement value
    Camera thermal control system
    • Table 1. Material properties of camera components

      View table
      View in Article

      Table 1. Material properties of camera components

      NameMaterialYoung’s modulus /GPa Density /kg·m−3Specific heat capacity/J·kg−1·℃ Thermal conductivity W·m−1·℃ Thermal expansion coefficient/℃−1Poisson ratio
      BodyAluminum alloy7127708752372.3×10−50.33
      Lens tube, top plateCopper alloy11083003854011.8×10−50.34
      CMOSMonocrystalline Silicon19023307021245.0×10−70.064
      Lens housingABS288014700.229.0×10−50.394
      LensGlass8825007501.45.8×10−70.215
    • Table 2. Deformation of the lens and CMOS under different temperature variation

      View table
      View in Article

      Table 2. Deformation of the lens and CMOS under different temperature variation

      Temperature increasement/℃ Lens translation/μm CMOS horizontal deformation/μm CMOS vertical deformation/μm
      00.000.000.00
      14.282.612.31
      29.615.255.28
      314.447.528.02
      419.769.7510.04
      524.1912.6113.02
      628.8915.3214.89
      732.5818.3217.65
    • Table 3. Pixel drift compensation model error

      View table
      View in Article

      Table 3. Pixel drift compensation model error

      First quadrant error/pixelSecond quadrant error/pixelThird quadrant error/pixelFourth quadrant error/pixel
      MinimumMaxMinimumMaxMinimumMaxMinimumMax
      Horizontal coordinate value0.000.090.000.120.000.120.000.13
      Vertical coordinate value0.000.100.000.200.000.150.000.16
    • Table 4. Comparison of thermal control device method and image point drift compensation method

      View table
      View in Article

      Table 4. Comparison of thermal control device method and image point drift compensation method

      First quadrant error/pixel Second quadrant error/pixel Third quadrant error/pixel Fourth quadrant error/pixel
      MinimumMaxMinimumMaxMinimumMaxMinimumMax
      Thermal control device method0.000.200.010.170.020.130.010.15
      Image point drift compensation method0.000.100.000.200.010.150.000.16
    Tools

    Get Citation

    Copy Citation Text

    Jiahe Chai, Mingli Dong, Peng Sun, Bixi Yan. Model and compensation method of image point drift caused by self-heating of industrial camera[J]. Infrared and Laser Engineering, 2021, 50(6): 20200494

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Photoelectric measurement

    Received: Dec. 15, 2020

    Accepted: --

    Published Online: Aug. 19, 2021

    The Author Email:

    DOI:10.3788/IRLA20200494

    Topics