Patent ID: 7204598

Claim:
A projector, comprising: a light source; an optical modulator that forms an optical image by modulating a light beam irradiated by the light source in accordance with image information; a device body having a projection optical system that projects the optical image formed by the optical modulator in an enlarged manner; and a casing in which the device body is housed, the projection optical system being provided with a projection optical system position adjuster that adjusts a position of a projection area, the casing having an opening through which the projection optical system is exposed and moved by the projection optical system position adjuster, a light shield for closing a gap between the projection optical system and the opening being disposed inside the casing, and the light shield including a ring held at a periphery of the projection optical system in a loosely fitted manner, and a member disposed to extend between the ring and a peripheral edge of the opening of the casing.