Chinese Optics, Volume. 13, Issue 1, 106(2020)

Aberration effect and optimization design of super-resolution telescope optical system

SHAO Hong-yu1,2、*, LI Ying-chao1,3, WANG Chao1,4, SHI Hao-dong1,4, LIU Zhuang1, and LI Guan-lin1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
  • 4[in Chinese]
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    Aiming at the problem of aberration affecting the super-resolution in large-aperture optical systems, the influence of Zernike wavefront aberrations on the performance of telescope super-resolution imaging systems and super-resolution local field of views are studied. A four-zone phase pupil filter is designed. Defocusing, astigmatism, coma and spherical aberrations are added to the exit pupil of an ideal optical system to gradually increase the amplitude. The tolerance of super-resolution imaging performance and local field of views to different types of aberrations are studied by changing the intensity distribution of the focal plane under different kinds and amplitudes of wavefront aberration. The results show that defocusing can inhibit super-resolution sidelobe energy and increase the super-resolution ratio, but has a greater impact on the local field of view; spherical aberration can inhibit super-resolution sidelobe energy and increase the local field of view; astigmatism and coma can significantly reduce the circular symmetry of the spot, and astigmatism has a more significant impact on the local field of view; and when appropriate defocusing and spherical aberration are added, the super-resolution sidelobe energy decreases and the super-resolution ratio is improved without affecting the local field of view.Based on this, a large aperture optical system with F/10 and focal length of 12 m is designed. By optimizing spherical aberration and reasonably defocusing residual, the super-resolution ratio is increased from 1.21 times to 1.31 times, the maximum sidelobe peak value is reduced from 0.33 to 0.30, and the local field of view becomes 38.28 μm.

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    SHAO Hong-yu, LI Ying-chao, WANG Chao, SHI Hao-dong, LIU Zhuang, LI Guan-lin. Aberration effect and optimization design of super-resolution telescope optical system[J]. Chinese Optics, 2020, 13(1): 106

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    Paper Information

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    Received: Mar. 22, 2019

    Accepted: --

    Published Online: Mar. 9, 2020

    The Author Email: SHAO Hong-yu (1531983483@qq.com)

    DOI:10.3788/co.20201301.0106

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