Patent ID: 6530665
Filing Date: 2003-03-11
Classification: G03B

Abstract:
A projector comprising:a light source; a light-modulating element that modulates light emitted from the light source in accordance with image information; a projecting device that projects the light modulated by the light-modulating element; a first polarizer disposed adjacent to and separate from a light-outgoing surface of the light-modulating element; a second polarizer disposed adjacent to and separate from a light-incoming surface of the light-modulating element; and a dust protection member that cuts off from an outside environment an area between the first polarizer and the light-outgoing surface and the second polarizer and the light-incoming surface, the dust protection member further comprising a first outside frame element, a second frame element, and a middle frame element disposed between and engaging with the first outside frame element and the second frame element, the first outside frame element and the second frame element sandwich the light modulating element, the first polarizer, and the second polarizer, the middle frame element surrounds an outer periphery of the light modulating element, the first polarizer, and the second polarizer.