Stereo projection using polarized solid state light sources

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United States of America Patent

PATENT NO 7891816
SERIAL NO

12036385

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A stereoscopic digital image projector includes (a) a plurality of light modulation assemblies, each comprising: (i) at least one solid-state light source energizable to provide illumination having a first polarization axis; (ii) a polarization rotator disposed in the path of the polarized illumination from the solid-state light source(s) and actuable to controllably rotate the polarization axis from the solid-state light source(s) to a second polarized axis; (iii) a micro-electromechanical spatial light modulator in the path of the polarized illumination and energizable to modulate the polarized illumination to form a first modulated light from illumination of the first polarization state and to form a second modulated light from illumination of the second polarization state; and (b) a synchronizing means to temporally control the polarization rotation to match the appropriate image data on the spatial light modulator; and (c) projection optics for directing the first and second modulated light toward a display surface.

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Patent Owner(s)

  • IMAX THEATRES INTERNATIONAL LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bietry, Joseph R Rochester, US 46 1531
Kircher, James R Mendon, US 17 440
Metzger, Robert Fairport, US 204 26414
Silverstein, Barry D Rochester, US 68 1961

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