A multiview tabletop 3D display based on nano-gratings

Xiangyu Chen; Linsen Chen; Zhen Zhou; Wen Qiao

doi:10.1117/12.2501149

24 July 2018 A multiview tabletop 3D display based on nano-gratings

Xiangyu Chen, Linsen Chen, Zhen Zhou, Wen Qiao

Proceedings Volume 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018); 108271V (2018) https://doi.org/10.1117/12.2501149
Event: Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 2018, Shanghai, China

Abstract

Tabletop 3D display is a device that can provide several position-dependent 3D scenes in a circular viewing zone to viewers. In this paper, a kind of new method could provide a tabletop 3D display which was designed with the pixelated nano-gratings in pixels of the image and fabricated to modulate the collimated illumination light and project multiple converged transmitted light beams into each circular viewing zone. In this monochromatic tabletop display prototype, several viewing points were achieved in a circular viewing zone. The minimum angular separation set in this prototype between adjacent viewing points was 1 degree and the angular divergence of each viewing angle was measured and calculate as 0.958 degree. In this paper, the resolution of the generated 3D image at each view was 640×360 pixels. Using the proposed technology, the 360-degree viewable 3D display system can be constructed easily with multiple viewing points either evenly or unevenly distributed in the viewing zone. In addition, several artificially generated 3D image can be mixed well with the real physical objects placed on the tabletop screen, suggesting a natural mixed-reality environment provided by the proposed system. The potential applications of the proposed tabletop 3D display system are very comprehensive including desktop conference, tables games, trade show display, and sandtable.

Citation Download Citation

Xiangyu Chen, Linsen Chen, Zhen Zhou, and Wen Qiao "A multiview tabletop 3D display based on nano-gratings", Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108271V (24 July 2018); https://doi.org/10.1117/12.2501149

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KEYWORDS

3D displays

3D image processing

Diffraction gratings

Modulation

Diffraction

Image segmentation

Lithography

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