Journals Articles Conferences News About CLP
Submit a paper Email Alert
Search
Search
Articles
Journals
News
Advanced Search
Top Searches
2D MaterialsTransformation opticsQuantum PhotonicsSmall lasersSemiconductor UV PhotonicsSupersymmetric microring laser arrays

Acta Optica Sinica, Volume. 38, Issue 11, 1122004(2018)

Optical System Design of Portable Stereoscopic Imaging Fundus Camera

Shiliang Lou1、*, Jun Wu1,2, Zhitao Xiao1,2、*, Lei Geng1,2, Fang Zhang1,2, and Wen Wang1,2
Author Affiliations
  • 1 School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China
  • 2 Tianjin Key Laboratory of Optoelectronic Detection Technology and System, Tianjin 300387, China
    • show less
    AbstractGet PDF(in Chinese)
    Figures&Tables (10)
    Equations (0)
    References (0)
    Tools
    Paper Information
    Topics
    Figures & Tables(10)
    Optical structure of fundus camera

    Fig. 1. Optical structure of fundus camera

    Download full size
    Two forms of stereomicroscope[4]. (a) Parallel optical path system; (b) Tilted optical path system

    Fig. 2. Two forms of stereomicroscope[4]. (a) Parallel optical path system; (b) Tilted optical path system

    Download full size
    Imaging system

    Fig. 3. Imaging system

    Download full size
    Optical characteristic curves of imaging system. (a) MTF curves; (b) field curvature and distortion curves; (c) chromatic aberration curves

    Fig. 4. Optical characteristic curves of imaging system. (a) MTF curves; (b) field curvature and distortion curves; (c) chromatic aberration curves

    Download full size
    MTF curves under different diopters

    Fig. 5. MTF curves under different diopters

    Download full size
    Illumination system

    Fig. 6. Illumination system

    Download full size
    Simulation results of illumination uniformity in fundus. (a) Annular spot near cornea; (b) on retina

    Fig. 7. Simulation results of illumination uniformity in fundus. (a) Annular spot near cornea; (b) on retina

    Download full size
    Simulated disparity map

    Fig. 8. Simulated disparity map

    Download full size

    • Table 1. Expression of relationship between each lens parameter and human eye diopter

      View table

      Table 1. Expression of relationship between each lens parameter and human eye diopter

      Lens parameterRelationship between lens parameter and diopter A
      Anterior lens radius R3R3(A)=10.2-1.75·ln(A+1)
      Posterior lens radius R4R4(A)=-6+0.2294·ln(A+1)
      Aqueous thickness D2D2(A)=3.05-0.05·ln(A+1)
      Lens thickness D3D3(A)=4+0.1·ln(A+1)
      Lens refractive index n3n3(A)=1.42+9×10-5·(10·A+A2)

    • Table 2. Comparison among our designed optical system and other designs

      View table

      Table 2. Comparison among our designed optical system and other designs

      Optical systemFocusing range /m-1ResolutionField curvature /mmDistortion /%
      Reported in reference [8]-10-+7>0.2 at 70 lp·mm-10.86-7.2
      Reported in reference [12]-10-+5>0.25 at 75 lp·mm-10.2-5
      Reported in reference [2]-15-+15>0.4 at 70 lp·mm-10.20.6
      Proposed-7-+5>0.55 at 70 lp·mm-10.028-4.9
    Tools

    Get Citation

    Copy Citation Text

    Shiliang Lou, Jun Wu, Zhitao Xiao, Lei Geng, Fang Zhang, Wen Wang. Optical System Design of Portable Stereoscopic Imaging Fundus Camera[J]. Acta Optica Sinica, 2018, 38(11): 1122004

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Set citation alerts for article
    Save article for my favorites
    Paper Information

    Category: Optical Design and Fabrication

    Received: Apr. 25, 2018

    Accepted: Jun. 25, 2018

    Published Online: May. 9, 2019

    The Author Email:

    DOI:10.3788/AOS201838.1122004

    Topics

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