Laser & Optoelectronics Progress, Volume. 61, Issue 13, 1308001(2024)

Analysis and Correction Algorithm of Pincushion Distortion in Galvanometer Scanning

Yutao Ding1, Jun Zhang2、*, Yao Guo3, and Hao Chen4
Author Affiliations
  • 1School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, Guangxi , China
  • 2School of Artificial Intelligence, Guilin University of Electronic Technology, Guilin 541004, Guangxi , China
  • 3School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, Guangxi , China
  • 4School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi , China
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    Figures & Tables(16)
    Optical path diagram of galvanometer scanning system
    Simulation results of galvanometer scanning path
    Rotation angle of galvanometer after correction
    Relationship between driving voltage and rotation angle of galvanometer X
    Relationship between driving voltage and rotation angle of galvanometer Y
    Driving voltage of galvanometer after correction
    Scanning path of galvanometer after correction (vertical spacing is 30 cm)
    Correction value for pincushion distortion
    Scanning path of galvanometer after correction (vertical spacing is 3 m, galvanometer X scanning frequency is 50 Hz, galvanometer Y scanning frequency is 1 Hz)
    Scanning path of galvanometer after correction (vertical spacing is 5 m, galvanometer X scanning frequency is 20 Hz, galvanometer Y scanning frequency is 1 Hz)
    Scanning path of galvanometer before correction (vertical spacing is 5 m). (a) 25 Hz; (b) 50 Hz; (c) 75 Hz
    Scanning path of galvanometer after correction (vertical spacing is 5 m). (a) 25 Hz; (b) 50 Hz; (c) 75 Hz
    Physical image of dual axis galvanometer
    Actual scanning path of galvanometer before correction (vertical spacing is 37 cm)
    Actual scanning path of galvanometer after correction (vertical spacing is 37 cm)
    • Table 1. Parameter setting of galvanometer

      View table

      Table 1. Parameter setting of galvanometer

      Vertical distance from Y to target area ν /mScanning frequency of galvanometer X /HzScanning frequency of galvanometer Y /HzRotation angle of galvanometer X /(°)Rotation angle of galvanometer Y /(°)
      13501±10±10
      25201±10±10
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    Yutao Ding, Jun Zhang, Yao Guo, Hao Chen. Analysis and Correction Algorithm of Pincushion Distortion in Galvanometer Scanning[J]. Laser & Optoelectronics Progress, 2024, 61(13): 1308001

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    Paper Information

    Category: Geometric Optics

    Received: Jul. 24, 2023

    Accepted: Oct. 17, 2023

    Published Online: Jul. 17, 2024

    The Author Email: Jun Zhang (junzhang8819@gmail.com)

    DOI:10.3788/LOP231782

    CSTR:32186.14.LOP231782

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