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1. (WO2013126454) OPTICAL POLARIZATION STATE MODULATOR ASSEMBLY FOR USE IN STEREOSCOPIC THREE-DIMENSIONAL IMAGE PROJECTION SYSTEM

Pub. No.:    WO/2013/126454    International Application No.:    PCT/US2013/026948
Publication Date: Fri Aug 30 01:59:59 CEST 2013 International Filing Date: Thu Feb 21 00:59:59 CET 2013
IPC: G02B 27/26
H04N 13/00
Applicants: LC-TEC DISPLAYS AB
OSTERMAN, Jesper
SCHEFFER, Terry J.
Inventors: OSTERMAN, Jesper
SCHEFFER, Terry J.
Title: OPTICAL POLARIZATION STATE MODULATOR ASSEMBLY FOR USE IN STEREOSCOPIC THREE-DIMENSIONAL IMAGE PROJECTION SYSTEM
Abstract:
An optical polarization state modulator assembly (400) for use in a stereoscopic three-dimensional image projection system includes a spatial light modulator (412), a light source (22) emitting multiple wavelength components of light for incidence on the spatial light modulator, and a projection lens (414). A polarization converter system (420) cooperates with the spatial light modulator to produce in alternating sequence polarized light carrying first and second perspective view images of a scene in different ones of first and second subframes. A polarization modulator (20), in response to first and second drive signals, imparts to, respectively, the image-carrying polarized light a first output polarization state during the first subframe and to the image-carrying polarized light a second output polarization state during the second subframe. The image-carrying polarized light in the first and second output polarization states propagates through the projection lens for transmission to an observer.