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Infrared and Laser Engineering, Volume. 53, Issue 3, 20240013(2024)

Athermalization design for annular aperture folding imaging system based on light-digital combination (cover paper·invited)

Dechao Ma1, Mingxu Piao1, Yafeng Xie2, Yuanming Zhao2, Qun Niu2, Chengran Zhang1, Zhe Wang1, and Bo Zhang1
Author Affiliations
  • 1School of Opto-electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
  • 2The 27th Research Institute of China Electronic Technology Group Corporation, Zhengzhou 450047, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
    Equations (16)
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    Figures & Tables(11)
    Schematic diagram of annular aperture folded imaging system principle. (a) Traditional refractive system; (b) Annular aperture folded imaging system

    Fig. 1. Schematic diagram of annular aperture folded imaging system principle. (a) Traditional refractive system; (b) Annular aperture folded imaging system

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    Optimization process of the synthetic PSF

    Fig. 2. Optimization process of the synthetic PSF

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    Schematic of the annular aperture folded imaging system. (a) Optical layout; (b) Front view of the solid model; (c) Rear view of the solid model

    Fig. 3. Schematic of the annular aperture folded imaging system. (a) Optical layout; (b) Front view of the solid model; (c) Rear view of the solid model

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    MTF of the annular aperture folded imaging system at different temperatures

    Fig. 4. MTF of the annular aperture folded imaging system at different temperatures

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    PSF consistency of light-digital combined annular aperture folding imaging system phase plate parameter

    Fig. 5. PSF consistency of light-digital combined annular aperture folding imaging system phase plate parameter

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    Schematic of the annular cubic phase plate

    Fig. 6. Schematic of the annular cubic phase plate

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    MTF of the light-digital combined annular aperture folding imaging system at different temperatures

    Fig. 7. MTF of the light-digital combined annular aperture folding imaging system at different temperatures

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    PSF at different temperatures

    Fig. 8. PSF at different temperatures

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    Results of the image restoration. (a) Original images at different temperatures; (b) Image restoration using the PSF at the design temperature; (c) Image restoration using the synthesized PSF

    Fig. 9. Results of the image restoration. (a) Original images at different temperatures; (b) Image restoration using the PSF at the design temperature; (c) Image restoration using the synthesized PSF

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    • Table 1. Design specifications for long-wave infrared annular aperture folded imaging system

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      Table 1. Design specifications for long-wave infrared annular aperture folded imaging system

      ParameterValue
      Wavelength/μm8-12
      F-number1
      Effective focal length/mm70
      Field of view (2ω)/(°)8

    • Table 2. PSNR values of image restoration using different PSF

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      Table 2. PSNR values of image restoration using different PSF

      ParameterTemperature/℃
      −402060
      PSNR (PSF at the design temperature)/dB19.417 328.043 219.751 9
      PSNR(synthesized PSF)/dB24.461 524.470 924.460 9
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    Dechao Ma, Mingxu Piao, Yafeng Xie, Yuanming Zhao, Qun Niu, Chengran Zhang, Zhe Wang, Bo Zhang. Athermalization design for annular aperture folding imaging system based on light-digital combination (cover paper·invited)[J]. Infrared and Laser Engineering, 2024, 53(3): 20240013

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    Paper Information

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    Received: Nov. 27, 2023

    Accepted: --

    Published Online: Jun. 21, 2024

    The Author Email:

    DOI:10.3788/IRLA20240013

    Topics

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