Patent ID: 6139154
Filing Date: 2000-10-31
Classification: G02F,G03B

Abstract:
A projector, comprising:an optical system that forms an optical image corresponding to image information by optically processing a light beam emitted from a light source and enlarging and projecting said optical image using a projection lens, and an outer casing that houses said optical system, said optical system including:1) an optical modulation device that modules light beams of a plurality of colors according to said image information and emits the light beams as modulated light beams; and2) a color synthesizing system that syntheses and emits said modulated light beams to said projection lens,said outer casing having an air inlet that takes in cooling air from outside the projector so as to cool said optical modulation device and said color synthesizing system, a fan that takes in cooling air from said air inlet being disposed on the opposite side of the projector from said air inlet with said optical modulation device and said color synthesizing system located therebetween, a structure bearing said optical modulation device and said color synthesizing system being provided with a suction opening that guides cooling air for cooling said devices, and said suction opening having a filter that prevents dust from entering the projector.