Volume 14 Issue 5
Sep.  2021
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XING Si-yuan, WANG Chao, XU Miao, LI Ying-chao, SHI Hao-dong, LIU Zhuang, FU Qiang. Influence of alignment error on DMD super-resolution imaging optical system[J]. Chinese Optics, 2021, 14(5): 1194-1201. doi: 10.37188/CO.2020-0220
Citation: XING Si-yuan, WANG Chao, XU Miao, LI Ying-chao, SHI Hao-dong, LIU Zhuang, FU Qiang. Influence of alignment error on DMD super-resolution imaging optical system[J]. Chinese Optics, 2021, 14(5): 1194-1201. doi: 10.37188/CO.2020-0220

Influence of alignment error on DMD super-resolution imaging optical system

Funds:  Supported by National Natural Science Foundation of China(No. 61805028, No. 61805027, No. 61705019, No. 61701045); The Second Batch of Rapid Support Projects in 2020(No. 61404140517); Special Project of Science and Industry Bureau(No. KJSP2016010202); Joint Astronomical Fund of National Natural Science Foundation of China(No. U1731240); Natural Science Foundation of Jilin Province(No. 20180101338JC); Open Fund of State Key Laboratory of Applied Optics(No. SKLA02020001A11)
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  • Corresponding author: hsjlyc@126.com
  • Received Date: 28 Dec 2020
  • Rev Recd Date: 14 Jan 2021
  • Available Online: 08 May 2021
  • Publish Date: 18 Sep 2021
  • At present, most of the research on super-resolution imaging technology is focused on the super-resolution reconstruction algorithm, but the influence of the alignment error of an optical system on the super-resolution imaging results has not been reported. To solve this problem, We researche the influence of alignment error on super-resolution imaging. First, the basic imaging model of super-resolution imaging optical system based on Digital Micro-mirror Device (DMD) is established. A DMD super-resolution imaging optical system with operating band of 8~12 μm is designed, and a method used to analyze the influence of the alignment error on super-resolution imaging quality is proposed. In the imaging model, alignment errors such as eccentricity, tilt, lens spacing error and defocus are introduced, and the reconstruction results are analyzed. Finally, the range of tolerance of the super-resolution imaging optical system is obtained. The results show that the total eccentricity error in the X direction is controlled within ± 0.07 mm, and that in the Y direction is within ±0.05 mm; the total tilt error in the X and Y directions is controlled within ±0.06°; the overall lens spacing error is controlled within ±0.02 mm; the defocusing amount of the imaging object lens is controlled within ±0.04 mm; the defocusing amount of the projection objective lens is controlled within ±0.05 mm, and within this range, the super-resolution imaging optical system can ensure the quality of super-resolution imaging.

     

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