• Infrared and Laser Engineering
  • Vol. 49, Issue 8, 20200003 (2020)
Xin Liu1, Jun Chang1, Weilin Chen1, Shan Du1, Chuhan Wu1, Xiangxin Xu1, and Yi Zhu2
Author Affiliations
  • 1Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of China, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
  • 2China Ordnance Industrial Standardization Research Institute, Beijing 100089, China
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    DOI: 10.3788/IRLA20200003 Cite this Article
    Xin Liu, Jun Chang, Weilin Chen, Shan Du, Chuhan Wu, Xiangxin Xu, Yi Zhu. Optical design of continuous zoom polarization video microscope[J]. Infrared and Laser Engineering, 2020, 49(8): 20200003 Copy Citation Text show less
    Structure of five-component zoom system
    Fig. 1. Structure of five-component zoom system
    Optical design flow chart
    Fig. 2. Optical design flow chart
    Optical layouts of 1×, 2.1×, 3.3×, 4.8×, 6.5×
    Fig. 3. Optical layouts of 1×, 2.1×, 3.3×, 4.8×, 6.5×
    Spot diagrams of 1×, 2.1×, 3.3×, 4.8×, 6.5×
    Fig. 4. Spot diagrams of 1×, 2.1×, 3.3×, 4.8×, 6.5×
    MTF plots of 1×, 2.1×, 3.3×, 4.8×, 6.5×
    Fig. 5. MTF plots of 1×, 2.1×, 3.3×, 4.8×, 6.5×
    Zoom curves of zoom group, compensating group 1 and 2
    Fig. 6. Zoom curves of zoom group, compensating group 1 and 2
    CompanyProductZoom ratioZoom range
    OlympusMVX1010:10.63×−6.3×
    ZeissSmartzoom 510:10.5×−5×
    Zhejiang Sunny Ltd.SZ6Series6.5:10.7×−4.5×
    Guilin Microtech Ltd.MZDM0745Series6.4:10.7×−4.5×
    Table 1.

    Representative zoom microscope objectives

    变焦显微物镜代表产品

    ParametersValue
    Spectral rangeVisible spectrum
    Numerical aperture(NA)0.05–0.2
    Field of view/mmΦ1.70–11.1
    Object distance/mm20
    Zoom range1×–6.5×
    1X-3.3XMTF(80 lp/mm)≥0.3
    3.3X-6.5XMTF(60 lp/mm)≥0.3
    Table 2.

    Specifications of optical system

    系统主要设计指标

    Zoom 1Zoom 2Zoom 3Zoom 4Zoom 5
    Magnification2.1×3.3×4.8×6.5×
    Field of view/mm11.15.283.362.311.70
    NA0.050.10.140.170.20
    Table 3.

    Basic parameters of typical zoom states

    典型变焦状态的基本参数

    D/mm Zoom 1Zoom 2Zoom 3Zoom 4Zoom 5
    ZG9.51237.30343.97344.48941.4605
    CG 1142.97391.18071.61257.82946.495
    CG 2158.869118.685111.764113.731120.246
    Table 4.

    Zoom CAM curve data table

    凸轮曲线数据表

    Xin Liu, Jun Chang, Weilin Chen, Shan Du, Chuhan Wu, Xiangxin Xu, Yi Zhu. Optical design of continuous zoom polarization video microscope[J]. Infrared and Laser Engineering, 2020, 49(8): 20200003
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