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Laser & Optoelectronics Progress, Volume. 58, Issue 18, 1811027(2021)

High-Resolution Imaging Technology for Large F-Numbers Based on Pixel Coding

Qiusha Shan1,2、**, Wei Hao1, Zhaohui Liu1,2、*, Liang Zhou1, and Rongli Chen1,2
Author Affiliations
  • 1Xi'an Institute of Optics and Precision Mechanics, China Academy of Science, Xi'an, Shaanxi 710119, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (14)
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    References (10)
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    Figures & Tables(14)
    Process of image degradation and pixel coding

    Fig. 1. Process of image degradation and pixel coding

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    Process of building coding matrix using PSF

    Fig. 2. Process of building coding matrix using PSF

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    Process of reading image

    Fig. 3. Process of reading image

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    Process of reading and decoding image

    Fig. 4. Process of reading and decoding image

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    Degraded image of large F-number system

    Fig. 5. Degraded image of large F-number system

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    Correction process of pixel coding algorithm

    Fig. 6. Correction process of pixel coding algorithm

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    MTF curves with different F-number

    Fig. 7. MTF curves with different F-number

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    MTF curves of different Q values[10]

    Fig. 8. MTF curves of different Q values[10]

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    Image of imaging lens

    Fig. 9. Image of imaging lens

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    Image of distinguish plate with F=11

    Fig. 10. Image of distinguish plate with F=11

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    Image of distinguish plate with F=25

    Fig. 11. Image of distinguish plate with F=25

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    Corrected image of distinguish plate with F=25

    Fig. 12. Corrected image of distinguish plate with F=25

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    MTF values corresponding to different discriminant plate groups under different F-number

    Fig. 13. MTF values corresponding to different discriminant plate groups under different F-number

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    • Table 1. Parameter of scale system

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      Table 1. Parameter of scale system

      ParameterValue
      Focal length /mm100
      F-number25,11
      Diameter /mm4,9
      Field of view /[(°)×(°)]20.6×13.8,20.6×24.8
      Pixel size /μm9
      Size /(pixel×pixel)4008×2672
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    Qiusha Shan, Wei Hao, Zhaohui Liu, Liang Zhou, Rongli Chen. High-Resolution Imaging Technology for Large F-Numbers Based on Pixel Coding[J]. Laser & Optoelectronics Progress, 2021, 58(18): 1811027

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    Paper Information

    Category: Imaging Systems

    Received: May. 31, 2021

    Accepted: Jul. 28, 2021

    Published Online: Sep. 3, 2021

    The Author Email: Qiusha Shan (shqsh.2007@163.com), Zhaohui Liu (lzh@opt.ac.cn)

    DOI:10.3788/LOP202158.1811027

    Topics

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