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Proceedings Paper

Floating volumetric display using an imaging element that consists of a 90º prism sheet and a linear Fresnel lens
Author(s): Yuki Maeda; Daisuke Miyazaki; Takaaki Mukai; Satoshi Maekawa
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Paper Abstract

We propose a floating volumetric display system using a novel imaging element whose aperture is large and can be made easily at low cost. Diffuse rays in a horizontal direction for an observer are formed by a 90º prism sheet, which has a shape of an array of 90º V-grooves, as a result of twice total internal reflection. On the other hand, the diffuse rays in a longitudinal direction for the observer are formed by a linear Fresnel lens. A formed image by the proposed imaging element does not distort in the horizontal direction because the rays in the horizontal direction converge by retroreflection. The proposed imaging element can be produced easier than a conventional distortion-free imaging element and display a larger floating image. A floating three-dimensional image was displayed by a volumetric display system based on optical scanning of an inclined image plane. A position of a two-dimensional real image formed by the proposed imaging element was moved by an optical scanner at a faster rate than the duration time of persistence of vision. A stack of moved images created the floating three-dimensional volume image.

Paper Details

Date Published: 6 March 2014
PDF: 9 pages
Proc. SPIE 9011, Stereoscopic Displays and Applications XXV, 90111N (6 March 2014); doi: 10.1117/12.2037726
Show Author Affiliations
Yuki Maeda, Osaka City Univ. (Japan)
Daisuke Miyazaki, Osaka City Univ. (Japan)
Takaaki Mukai, Osaka City Univ. (Japan)
Satoshi Maekawa, Univ. of Hyogo (Japan)


Published in SPIE Proceedings Vol. 9011:
Stereoscopic Displays and Applications XXV
Andrew J. Woods; Nicolas S. Holliman; Gregg E. Favalora, Editor(s)

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