Patent ID: 8066380
Filing Date: 2011-11-29
Classification: G03B,H04N

Abstract:
1. A projector-type image display apparatus comprising: a first liquid crystal panel configured to modulate a first color light beam; a second liquid crystal panel configured to modulate a second color light beam; a combiner configured to combine optical paths of light beams received from the first and second liquid crystal panels; a projection optical system configured to project a light beam combined by the combiner; a first polarizer disposed between the combiner and the first liquid crystal panel and configured to transmit a light of a first polarization direction and to absorb a light of a second polarization direction perpendicular to the first polarization direction; a second polarizer disposed between the combiner and the second liquid crystal panel and configured to transmit a light of the second polarization direction and to absorb a light of the first polarization direction; and a retardation plate disposed between the combiner and the projection optical system, wherein the first color light beam and the second color light beam enter the projection optical system in a manner such that the direction of polarization of the first color light beam is different from the direction of polarization of the second color light beam.