6 February 2012 A fast-switching, contrast-enhanced liquid crystal polarization modulator for high-end, single-lens stereoscopic 3D projector applications
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Proceedings Volume 8280, Advances in Display Technologies II; 828009 (2012) https://doi.org/10.1117/12.907919
Event: SPIE OPTO, 2012, San Francisco, California, United States
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.
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Jesper Osterman, Chris Ward, Terry Scheffer, "A fast-switching, contrast-enhanced liquid crystal polarization modulator for high-end, single-lens stereoscopic 3D projector applications", Proc. SPIE 8280, Advances in Display Technologies II, 828009 (6 February 2012); doi: 10.1117/12.907919; https://doi.org/10.1117/12.907919
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