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Improving resolution of lensless imaging with higher harmonics of Fresnel zone aperture

  • Special Section: Regular Paper
  • The 12th International Conference on Optics-Photonics Design & Fabrication (ODF’20 in 2021), Taoyuan, Taiwan
  • Published:
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Abstract

As part of our ongoing research on lensless imaging with a Fresnel zone aperture (FZA), we propose a method of improving resolution with higher FZA harmonics. Although previous research has required a finer FZA pitch to improve resolution, there was a limit to how much it could be utilized because of the diffraction. Our proposed method can improve resolution without a finer FZA pitch by utilizing higher harmonics. We confirmed the principle by simulation and experimentation.

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Authors and Affiliations

  1. Center for Technology Innovation–Instrumentation, Hitachi Ltd., Tokyo, Japan

    Kazuyuki Tajima, Yusuke Nakamura, Keita Yamaguchi & Takeshi Shimano

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  1. Kazuyuki Tajima
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  2. Yusuke Nakamura
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  3. Keita Yamaguchi
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  4. Takeshi Shimano
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Correspondence to Kazuyuki Tajima.

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Tajima, K., Nakamura, Y., Yamaguchi, K. et al. Improving resolution of lensless imaging with higher harmonics of Fresnel zone aperture. Opt Rev 29, 153–158 (2022). https://doi.org/10.1007/s10043-022-00735-2

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  • DOI: https://doi.org/10.1007/s10043-022-00735-2

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