Projector

Details Projector Projector

2011-08-09

2011-08-09

Dowling, William C (Department: 2878)

Optics: image projectors

Temperature control

Liquid coolant

C353S061000, C165S104110, C361S698000

Reexamination Certificate

active

07993009

ABSTRACT:
There is disclosed a projector capable of efficiently cooling an optical element while decreasing the generation of noise as much as possible. A projector P includes a main body1provided with a light source2, an optical element4(liquid crystal panels5, 6and7, polarization plates8A,8B and a prism25) which processes (modulates) light emitted from this light source2in accordance with image information and a projection lens9which projects a modulated projection optical image onto a screen, and further includes a cooling apparatus10in which a compressor12, a radiator14, a capillary tube16(a pressure reducing unit) and an evaporator18provided in the main body1constitute a refrigerant circuit, and air subjected to heat exchange between the air and the evaporator18is supplied to the liquid crystal panels5, 6and7to cool the panels.

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patent: 6997006 (2006-02-01), Kameyama et al.
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patent: 2005-321525 (2005-11-01), None
patent: 2006-208488 (2006-08-01), None
Japanese Office Action issued in Japanese Patent Application No. JP 2006-296305 dated Nov. 2, 2010.
European Search Report issued in European Patent Application No. 07830341.9-2209, mailed Oct. 1, 2010.

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