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Proceedings Paper

A dynamic three-dimensional display technique based on liquid crystal spatial light modulator
Author(s): Huadong Zheng; Yingjie Yu; Tao Wang; Anand Asundi
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Paper Abstract

A dynamic three-dimensional (3D) display method based on Liquid Crystal on Silicon (LCoS) spatial light modulator is introduced in this paper. Sixty viewing-angles are set at regular intervals of six degrees along a complete circle in the horizontal plane, and phase holograms of three-dimensional virtual object are calculated under these viewing-angles by use of computational tomographic method as well as spatial coordinate transformation. Multi- kinoforms are calculated for each angle by adding proper pseudorandom phase in each object plane, which can avoid losing spectrum information and be able to reduce the speckle noise of reconstructed image. These kinoforms are written to a 3D electro-holographic display system based on LC-R2500 spatial light modulator (SLM) by a proper loading sequence. A 650 nm diode laser with power of 150 mW is used in the system. A transparent screen is taken as a display media, which could show three-dimensional images reconstructed from holograms loaded on LC-R2500. A pair of Fresnel lenses is used to improve the viewing effect and three-dimensional images floating in space can be viewed by multiple observers.

Paper Details

Date Published: 19 May 2008
PDF: 8 pages
Proc. SPIE 7000, Optical and Digital Image Processing, 70001U (19 May 2008); doi: 10.1117/12.783453
Show Author Affiliations
Huadong Zheng, Shanghai Univ. (China)
Yingjie Yu, Shanghai Univ. (China)
Tao Wang, Shanghai Univ. (China)
Anand Asundi, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 7000:
Optical and Digital Image Processing
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal; Frédéric Truchetet, Editor(s)

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