Patent ID: 7557868

Claim:
A liquid crystal projector device comprising an optical device 3 for generating color image light, and a projection lens 20 for projecting the color image light generated by the optical device 3 ′ toward a screen, the optical device 3 comprising three image generating units 50 , 60 , 70 for generating image light of three primary colors, and a color synthesis prism 30 for synthesizing the image light of three primary colors generated by the three image generating units 50 , 60 , 70 into color image light, the three image generating units 50 , 60 , 70 each having a liquid crystal panel and a polarizing plate arranged on the optical axis, and having an optical compensating plate arranged between the liquid crystal panel and the polarizing plate for compensating birefringence of light caused by the liquid crystal panel, the polarizing plate and the optical compensating plate of each image generating unit being held by a combination frame 9 and placed on a support base 8 , the combination frame 9 comprising a polarizing plate frame 90 for holding the polarizing plate, and a compensating plate frame 91 for holding the optical compensating plate, the polarizing plate frame 90 being supported on the support base 8 via a rotation adjustment mechanism 92 for rotating the polarizing plate about the optical axis, the compensating plate frame 91 being supported on the polarizing plate frame 90 via an inclination adjustment mechanism 93 for inclining the optical compensating plate by rotating the optical compensating plate about two axes perpendicular to the optical axis and perpendicular to each other.