• Chinese Optics Letters
  • Vol. 17, Issue 5, 052201 (2019)
Jingang Zhang1、2, Yunfeng Nie3、*, Qiang Fu4, and Yifan Peng5
Author Affiliations
  • 1Key Laboratory of Computational Optics Imaging Technology, Chinese Academy of Sciences, Beijing 100094, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, Beijing
  • 3Brussel Photonics, Department of Applied Physics and Photonics, Vrije Universiteit Brussel, 1050 Ixelles, Belgium
  • 4King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
  • 5The University of British Columbia, Vancouver V6T 1Z4, Canada
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    Imaging model is the comprehensive impact of the target scene, PSF, and noise.
    Fig. 1. Imaging model is the comprehensive impact of the target scene, PSF, and noise.
    Schematic layout of the proposed optical system.
    Fig. 2. Schematic layout of the proposed optical system.
    MTF performance at 633 nm of the exemplary design using the joint method before digital processing.
    Fig. 3. MTF performance at 633 nm of the exemplary design using the joint method before digital processing.
    (a) Spot diagram of the quasi-monochromatic design using the proposed joint method. (b) Spot diagram of the visible spectrum using the conventional design method. The scale difference shows the considerable chromatic aberrations that are unnecessary to correct by using the proposed joint method.
    Fig. 4. (a) Spot diagram of the quasi-monochromatic design using the proposed joint method. (b) Spot diagram of the visible spectrum using the conventional design method. The scale difference shows the considerable chromatic aberrations that are unnecessary to correct by using the proposed joint method.
    Classic design using Wynne’s method[5] to achieve a comparable design under the same specifications in Table 1.
    Fig. 5. Classic design using Wynne’s method[5] to achieve a comparable design under the same specifications in Table 1.
    Spot diagram of the visible spectrum using Wynne’s design after optimization.
    Fig. 6. Spot diagram of the visible spectrum using Wynne’s design after optimization.
    Performance comparison of the conventional and our designs. (a) Raw image simulated with the proposed design. (b) Image simulated with Wynne’s design. (c) Final corrected image with the proposed method. All of the results are simulated in Zemax with the image simulation function. Our joint design results outperform the conventional Wynne design.
    Fig. 7. Performance comparison of the conventional and our designs. (a) Raw image simulated with the proposed design. (b) Image simulated with Wynne’s design. (c) Final corrected image with the proposed method. All of the results are simulated in Zemax with the image simulation function. Our joint design results outperform the conventional Wynne design.
    Standard ISO 12233 charts of (a) the simulated image and (b) the deconvolved image.
    Fig. 8. Standard ISO 12233 charts of (a) the simulated image and (b) the deconvolved image.
    MTF performance of (a) the simulated image and (b) the deconvolved image.
    Fig. 9. MTF performance of (a) the simulated image and (b) the deconvolved image.
    ItemsSpecifications
    Focal length1400 mm
    F-number8
    Field of view1.16°
    Wavelengths486 nm, 587 nm (primary), and 656 nm
    Back focal length>1000mm
    Pixel size5.5μm
    Detector resolution4096×3072
    Pixel formatBayer RGB
    Table 1. Specifications of the Exemplary Telescope
    Copy Citation Text
    Jingang Zhang, Yunfeng Nie, Qiang Fu, Yifan Peng. Optical–digital joint design of refractive telescope using chromatic priors[J]. Chinese Optics Letters, 2019, 17(5): 052201
    Download Citation
    Category: Optical Design and Fabrication
    Received: Oct. 15, 2018
    Accepted: Jan. 30, 2019
    Published Online: May. 13, 2019
    The Author Email: Yunfeng Nie (ynie@b-phot.org)