“ReQTable: Square tabletop display that provides dual-sided mid-air images to each of four users” by Takenawa, Kikuchi, Yahagi, Fukushima and Naemura

  • ©Mizuki Takenawa, Tomoyo Kikuchi, Yuchi Yahagi, Shogo Fukushima, and Takeshi Naemura

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Entry Number: 08

Title:


    ReQTable: Square tabletop display that provides dual-sided mid-air images to each of four users

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Description:


    We propose “ReQTable”, an optical system displaying dual-sided mid-air images to each of four users with less stray light. Dual Slit Mirror Arrays (dual SMAs) can produce a mid-air image that multiple people can view simultaneously without wearing special equipment. Dual SMAs are rectangular and can theoretically display mid-air images in the four surrounding directions. However, they also produce unwanted light, called stray light, which is especially noticeable when mid-air images are displayed in some directions. It is difficult for users to identify stray lights, and they cannot concentrate on viewing only the mid-air images. To improve a user experience, it is necessary to suppress stray light. ReQTable displays mid-air images in four directions with stray light reduction.

References:


    1. Li-Wei Chan, Ting-Ting Hu, Jin-Yao Lin, Yi-Ping Hung, and Jane Hsu. 2008. On top of tabletop: A virtual touch panel display. In 2008 3rd IEEE International Workshop on Horizontal Interactive Human Computer Systems. IEEE, 169–176.
    2. International Electrotechnical Commission. 2020. 3D display devices-part 51-1: Generic introduction of aerial display. Technical Report. IEC TR 62629-51-1: 2020.
    3. Hajime Katsumoto, Hajime Kajita, Naoya Koizumi, and Takeshi Naemura. 2016. HoVerTable PONG: Playing Face-to-Face Game on Horizontal Tabletop with Moving Vertical Mid-Air Image. In ACE ’16 (Osaka, Japan). ACM, New York, NY, USA, Article 50, 6 pages. https://doi.org/10.1145/3001773.3001820
    4. Tatuya Okawa, Hajime Katsumoto, Hajime Kajita, Naoya Koizumi, and Takeshi Naemura. 2016. Stray light shielding using polarized light in a two-layer retrotransmission optical system. In Proc. the 21st Annual Conference of the VRSJ (in Japanese). 33C–02.
    5. Yuto Osada and Yue Bao. 2021. Design of Ghost-free Aerial Display by Using Polarizing Plate and Dihedral Corner Reflector Array. In 2021 5th International Conference on Imaging, Signal Processing and Communications (ICISPC). 67–70. https://doi.org/10.1109/ICISPC53419.2021.00020
    6. Shunsuke Yoshida. 2015. fVisiOn: Interactive Glasses-Free Tabletop 3D Images Floated by Conical Screen and Modular Projector Arrays. In SA ’15 (Kobe, Japan). ACM, New York, NY, USA, Article 12, 3 pages. https://doi.org/10.1145/2818466.2818472

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