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Proceedings Paper

Time-sharing display approach using liquid crystal light valve and a photoreractive crystal for electroholography
Author(s): Tsutomu Horikoshi; Masahiro Sasaura; Tadayuki Imai; Hiroki Yamazaki; Takaaki Akimoto; Shogo Yagi; Kazuhito Higuchi; Satoshi Suzuki; Noburu Sonehara
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Paper Abstract

A new electroholography system is introduced that uses a liquid crystal display, a photorefractive crystal, and a time- sharing display method. By using the photorefractive crystal as a kind of screen through which the hologram is recreated, we can realize high quality, off-axis, and computer-generated holograms. The time sharing approach enables an electronic display device to display 3D objects clearly by breaking them into parts that are displayed in sequential frames. If the fames are cycled at a high enough speed, we see these parts as a single object due to the afterimage effect. This approach relaxes the strict dynamic range requirements that would normally be placed on the electronic display device. The photorefractive crystal suppresses the flicker caused by the time-sharing display method. This paper first describes the time-sharing method. Next, a new experimental 3D-TV system with a photorefractive crystal, strontium barium niobate, is demonstrated. This system confirms the exciting future of electroholography.

Paper Details

Date Published: 25 March 1999
PDF: 8 pages
Proc. SPIE 3637, Practical Holography XIII, (25 March 1999); doi: 10.1117/12.343786
Show Author Affiliations
Tsutomu Horikoshi, NTT Human Interface Labs. (Japan)
Masahiro Sasaura, NTT Human Interface Labs. (Japan)
Tadayuki Imai, NTT Human Interface Labs. (Japan)
Hiroki Yamazaki, NTT Human Interface Labs. (Japan)
Takaaki Akimoto, NTT Human Interface Labs. (Japan)
Shogo Yagi, NTT Human Interface Labs. (Japan)
Kazuhito Higuchi, NTT Human Interface Labs. (Japan)
Satoshi Suzuki, NTT Human Interface Labs. (Japan)
Noburu Sonehara, NTT Human Interface Labs. (Japan)

Published in SPIE Proceedings Vol. 3637:
Practical Holography XIII
Stephen A. Benton, Editor(s)

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