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Laser & Optoelectronics Progress, Volume. 62, Issue 9, 0917001(2025)

Optical System Design of a Small-Diameter Abdominal Fluorescence Endoscope

Pu Nie1,2, Zhijian Zhang3, Miao Wang1, Ali Shuaib4, and Ya Guo1,2,5、*
Author Affiliations
  • 1School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, Jiangsu , China
  • 2International Joint Research Center for Intelligent Optical Sensing and Applications at Jiangnan University, Wuxi 214122, Jiangsu , China
  • 3Department of Nephrology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi 214000, Jiangsu , China
  • 4Biomedical Engineering Unit, Kuwait University, Safat13110, Kuwait
  • 5Key Laboratory of Advanced Process Control for Light Industry, Ministry of Education, Jiangnan University, Wuxi 214122, Jiangsu , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (16)
    Equations (7)
    References (21)
    Cited By (1)
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    Figures & Tables(16)
    Overall system architecture of abdominal fluorescence endoscope

    Fig. 1. Overall system architecture of abdominal fluorescence endoscope

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    The optical structure of the abdominal fluorescence endoscope

    Fig. 2. The optical structure of the abdominal fluorescence endoscope

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    Schematic diagram of the anti long-range structure

    Fig. 3. Schematic diagram of the anti long-range structure

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    The initial structure diagram of the objective lens

    Fig. 4. The initial structure diagram of the objective lens

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    The initial structure of the relay system

    Fig. 5. The initial structure of the relay system

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    The initial structure of the magnifying objective

    Fig. 6. The initial structure of the magnifying objective

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    Optimization process diagram

    Fig. 7. Optimization process diagram

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    Optimized overall structure diagram

    Fig. 8. Optimized overall structure diagram

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    Visible light band MTF curves. (a) MTF curves of the objective lens; (b) MTF curves of the inversion system; (c) MTF curves of integration of the objective lens and the relay system; (d) MTF curves of the entire optical system

    Fig. 9. Visible light band MTF curves. (a) MTF curves of the objective lens; (b) MTF curves of the inversion system; (c) MTF curves of integration of the objective lens and the relay system; (d) MTF curves of the entire optical system

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    Near-infrared MTF curves. (a) MTF curves of the objective lens; (b) MTF curves of the inversion system; (c) MTF curves of the integration of objective lens and the relay system; (d) MTF curves of the entire optical system

    Fig. 10. Near-infrared MTF curves. (a) MTF curves of the objective lens; (b) MTF curves of the inversion system; (c) MTF curves of the integration of objective lens and the relay system; (d) MTF curves of the entire optical system

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    Spot diagrams. (a) Visible light band spot diagrams; (b) near-infrared band spot diagrams

    Fig. 11. Spot diagrams. (a) Visible light band spot diagrams; (b) near-infrared band spot diagrams

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    Field curvature and distortion. (a) Visible light band; (b) near-infrared band

    Fig. 12. Field curvature and distortion. (a) Visible light band; (b) near-infrared band

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    • Table 1. Intraperitoneal fluorescence endoscopic parameters

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      Table 1. Intraperitoneal fluorescence endoscopic parameters

      Design parameterData
      Working wavelength /nm486‒656， 800‒850
      Entrance pupil diameter /mm0.1
      Field of view /（°）90
      Direction of view /（°）0
      F/#<8
      Diameter /mm3
      Working length /mm<300
      Relative distortion /%<25

    • Table 2. Tolerance value

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      Table 2. Tolerance value

      ItemValue
      TFRN /fringe2
      TTHI /mm0.03
      TSDY /mm0.02
      TSDX /mm0.02
      TSTY /（°）0.05
      TSTX /（°）0.05
      TEDY /mm0.02
      TEDX /mm0.02
      TETY /（°）0.05
      TETX /（°）0.05
      TIRR /fringe0.2
      TIND /mm0.001

    • Table 3. Results of Monte Carlo tolerance analysis in the visible light band

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      Table 3. Results of Monte Carlo tolerance analysis in the visible light band

      Percentage /%The value of MTF at 145 lp/mm
      900.09795185
      800.12662807
      500.17577937
      200.22816539
      100.24751684

    • Table 4. Results of Monte Carlo tolerance analysis in the near-infrared band

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      Table 4. Results of Monte Carlo tolerance analysis in the near-infrared band

      Percentage /%The value of MTF at 100 lp/mm
      900.05447191
      800.07989153
      500.13411236
      200.15258140
      100.17308832
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    Pu Nie, Zhijian Zhang, Miao Wang, Ali Shuaib, Ya Guo. Optical System Design of a Small-Diameter Abdominal Fluorescence Endoscope[J]. Laser & Optoelectronics Progress, 2025, 62(9): 0917001

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    Paper Information

    Category: Medical Optics and Biotechnology

    Received: Jul. 25, 2024

    Accepted: Sep. 12, 2024

    Published Online: Apr. 23, 2025

    The Author Email: Ya Guo (guoya68@163.com)

    DOI:10.3788/LOP241736

    CSTR:32186.14.LOP241736

    Topics

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