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Metasurface-driven full-space structured light for three-dimensional imaging

Author

Listed:
  • Gyeongtae Kim

    (Pohang University of Science and Technology (POSTECH))

  • Yeseul Kim

    (Pohang University of Science and Technology (POSTECH))

  • Jooyeong Yun

    (Pohang University of Science and Technology (POSTECH))

  • Seong-Won Moon

    (Pohang University of Science and Technology (POSTECH))

  • Seokwoo Kim

    (Pohang University of Science and Technology (POSTECH))

  • Jaekyung Kim

    (Pohang University of Science and Technology (POSTECH))

  • Junkyeong Park

    (Pohang University of Science and Technology (POSTECH))

  • Trevon Badloe

    (Pohang University of Science and Technology (POSTECH))

  • Inki Kim

    (Pohang University of Science and Technology (POSTECH)
    Sungkyunkwan University
    Sungkyunkwan University)

  • Junsuk Rho

    (Pohang University of Science and Technology (POSTECH)
    Pohang University of Science and Technology (POSTECH)
    POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics
    National Institute of Nanomaterials Technology (NINT))

Abstract

Structured light (SL)-based depth-sensing technology illuminates the objects with an array of dots, and backscattered light is monitored to extract three-dimensional information. Conventionally, diffractive optical elements have been used to form laser dot array, however, the field-of-view (FOV) and diffraction efficiency are limited due to their micron-scale pixel size. Here, we propose a metasurface-enhanced SL-based depth-sensing platform that scatters high-density ~10 K dot array over the 180° FOV by manipulating light at subwavelength-scale. As a proof-of-concept, we place face masks one on the beam axis and the other 50° apart from axis within distance of 1 m and estimate the depth information using a stereo matching algorithm. Furthermore, we demonstrate the replication of the metasurface using the nanoparticle-embedded-resin (nano-PER) imprinting method which enables high-throughput manufacturing of the metasurfaces on any arbitrary substrates. Such a full-space diffractive metasurface may afford ultra-compact depth perception platform for face recognition and automotive robot vision applications.

Suggested Citation

  • Gyeongtae Kim & Yeseul Kim & Jooyeong Yun & Seong-Won Moon & Seokwoo Kim & Jaekyung Kim & Junkyeong Park & Trevon Badloe & Inki Kim & Junsuk Rho, 2022. "Metasurface-driven full-space structured light for three-dimensional imaging," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32117-2
    DOI: 10.1038/s41467-022-32117-2
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    References listed on IDEAS

    as
    1. Gwanho Yoon & Kwan Kim & Daihong Huh & Heon Lee & Junsuk Rho, 2020. "Single-step manufacturing of hierarchical dielectric metalens in the visible," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    2. Tzu-Yung Huang & Richard R. Grote & Sander A. Mann & David A. Hopper & Annemarie L. Exarhos & Gerald G. Lopez & Amelia R. Klein & Erik C. Garnett & Lee C. Bassett, 2019. "A monolithic immersion metalens for imaging solid-state quantum emitters," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    3. Qinghua Song & Arthur Baroni & Rajath Sawant & Peinan Ni & Virginie Brandli & Sébastien Chenot & Stéphane Vézian & Benjamin Damilano & Philippe Mierry & Samira Khadir & Patrick Ferrand & Patrice Genev, 2020. "Ptychography retrieval of fully polarized holograms from geometric-phase metasurfaces," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
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    Cited by:

    1. Dongwoo Lee & Beomseok Oh & Jeonghoon Park & Seong-Won Moon & Kilsoo Shin & Sea-Moon Kim & Junsuk Rho, 2024. "Wide field-of-hearing metalens for aberration-free sound capture," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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