Patent ID: 7884887
Filing Date: 2011-02-08
Classification: G02F,G03B

Abstract:
1. A projector device comprising: a light source; an optical system for separating light from the light source into light of three primary colors; an image synthesizer for synthesizing the light of three primary colors into color image light; a holding case for holding the image synthesizer and the optical system; a liquid crystal panel and a polarizing plate oppositely arranged on each optical path of the light of three primary colors; a rectangular optical compensation sheet for compensating light birefringence due to the liquid crystal panel arranged between the liquid crystal panel and the polarizing plate; an optical compensation sheet holder to hold the optical compensation sheet, the optical compensation sheet being attached on the optical path, the optical compensation sheet holder comprising a frame for holding the optical compensation sheet; a turning member attached to the holding case, the turning member being turnable on a rotation axis perpendicular to the optical compensation sheet held by the frame; and a sliding member attached to the turning member, the sliding member being movable along the direction of the rotation axis perpendicular to the optical compensation sheet, wherein the sliding member contacts a corner part of the frame such that movement of the sliding member along the direction of the rotation axis perpendicular to the optical compensation sheet causes the frame to turn on a rotation axis parallel to the optical compensation sheet.