Journal of Applied Optics, Volume. 45, Issue 5, 916(2024)

Design of optical system for medical ureteroscope

Yuxin HUI, Yang XIANG*, Mingwang HOU, Xiaohan YUAN, and Lu YU
Author Affiliations
  • School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
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    Figures & Tables(14)
    Schematic diagram of ureteroscope
    Schematic diagram of reflective prism
    Cross sectional view of steering wedge
    3D diagram of objective lens subsystem
    MTF curves of objective lens subsystem
    3D diagram of eyepiece subsystem
    MTF curves of eyepiece subsystem
    3D diagram of endoscope system
    MTF curves of endoscope system
    Field curvature and distortion diagrams of endoscope system
    • Table 1. Parameters of FIGH-30-850N transmission beam

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      Table 1. Parameters of FIGH-30-850N transmission beam

      参数名称
      像素数/pixel30000 ±3000
      像圈直径 /μm790 ±50
      光纤直径 /μm850 ±50
      包层直径 /μm950 ±50
      最小弯曲半径/mm90*1(50*2
    • Table 2. System design parameters

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      Table 2. System design parameters

      参数名称
      内窥镜总长度/mm≥430
      光学外径/mm≤1
      视场角/(°)2ω=80
      波长/μm0.486~0.656
      工作距离/mm6
      F4.5
      远心度/(°)≤2
      MTFS、MTFT≥0.2@120 lp/mm
    • Table 3. Tolerance values

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      Table 3. Tolerance values

      容限类型容限值
      半径/rings3
      厚度/mm0.05
      X方向表面平行偏心/mm0.03
      Y方向表面平行偏心/mm0.03
      X方向元件平行偏心/mm0.03
      Y方向元件平行偏心/mm0.03
      X方向表面倾斜偏心/(°)0.025
      Y方向表面倾斜偏心/(°)0.025
      X方向元件倾斜偏心/(°)0.025
      Y方向元件倾斜偏心/(°)0.025
      折射率0.003
      阿贝数0.3
      不规则度0.5
    • Table 4. Tolerance analysis results

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      Table 4. Tolerance analysis results

      蒙特卡洛样本百分比/%各视场MTF平均值
      90≥0.380
      80≥0.384
      50≥0.391
      20≥0.402
      10≥0.404
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    Yuxin HUI, Yang XIANG, Mingwang HOU, Xiaohan YUAN, Lu YU. Design of optical system for medical ureteroscope[J]. Journal of Applied Optics, 2024, 45(5): 916

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    Paper Information

    Category:

    Received: Dec. 11, 2023

    Accepted: Aug. 15, 2024

    Published Online: Dec. 20, 2024

    The Author Email: Yang XIANG (向阳)

    DOI:10.5768/JAO202445.0501005

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