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Proceedings Paper

A fast-switching, contrast-enhanced liquid crystal polarization modulator for high-end, single-lens stereoscopic 3D projector applications
Author(s): Jesper Osterman; Chris Ward; Terry Scheffer
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Paper Abstract

We present a fast-switching, contrast-enhanced liquid crystal polarization modulator suitable for use as a polarization switch in time-multiplexed stereoscopic 3D applications. By utilizing a double-cell structure together with a dedicated driving scheme and an external quarter-wave retarder we can achieve fast, powered switching between two orthogonally polarized output states with completely symmetric operation between left and right eye images, including high extinction at all wavelengths for the dark states. The polarization modulator is especially attractive for the use in combination with high-end DLP®-based, single-lens stereoscopic 3D projectors operating at high frame rates, and enables high-brightness, low-ghosting viewing using lightweight and comfortable circular polarized passive 3D glasses. The practical advantages of a fast 50μs polarization modulator are discussed.

Paper Details

Date Published: 6 February 2012
PDF: 11 pages
Proc. SPIE 8280, Advances in Display Technologies II, 828009 (6 February 2012); doi: 10.1117/12.907919
Show Author Affiliations
Jesper Osterman, LC-Tec Displays AB (Sweden)
Chris Ward, Lightspeed Design, Inc. (United States)
Terry Scheffer, Motif, Inc. (United States)

Published in SPIE Proceedings Vol. 8280:
Advances in Display Technologies II
Liang-Chy Chien; Sin-Doo Lee; Ming Hsien Wu, Editor(s)

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