Volume 16 Issue 4
Jul.  2023
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WANG Hai-ming, QUAN Jia-ning, GE Bao-zhen. An adaptive optics system suitable for near-ground imaging[J]. Chinese Optics, 2023, 16(4): 843-852. doi: 10.37188/CO.2022-0230
Citation: WANG Hai-ming, QUAN Jia-ning, GE Bao-zhen. An adaptive optics system suitable for near-ground imaging[J]. Chinese Optics, 2023, 16(4): 843-852. doi: 10.37188/CO.2022-0230

An adaptive optics system suitable for near-ground imaging

doi: 10.37188/CO.2022-0230
Funds:  Supported by National Natural Science Foundation of China (No. 61535008)
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  • Corresponding author: gebz163@163.com
  • Received Date: 09 Nov 2022
  • Rev Recd Date: 01 Dec 2022
  • Available Online: 07 Feb 2023
  • In order to overcome the adverse effects of near-ground turbulence on the imaging quality of the optical systems at imaging distances of tens to hundreds of meters, an optical imaging system based on a long focal length telescopic objective lens and an integrated adaptive module is designed. With a system center height of 1.9 m and the imaging distance of 50−200 m, the outdoor imaging experiment of a resolution plate is carried out. The experimental results show that the influence of turbulence on imaging quality is obvious at medium and long distances of 50−200 m near the ground. The experimental system can effectively overcome the influence of turbulence at different distances and improve the consistency of image resolution and clarity. As the imaging distance increases, the influence of turbulence increases, and the system’s correction ability and the imaging quality decrease. The imaging resolution of the system can reach 0.5 mm at an imaging distance of 100 m. Cracks on the surface of a concrete model are observed and corrected at a distance of 200 m. The experimental results show that the system can suppress the influence of turbulence and improve the clarity of the image, which verifies the practical application ability of the system.

     

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