US Patent 7954956 Projection-type display apparatus
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Patent abstract
A projection-type display apparatus includes an optical modulation device having a lamp emitting a light, and a projection optical system projecting the light on a screen in a magnified form, with the projection optical system including a plurality of reflection mirrors. In addition, a fan system air-cools reflective surfaces of the plurality of reflection mirrors. The fan system includes a fan and a controller for controlling the fan based on luminance output of the lamp.
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Patent Inventor Names
Noboru Nabeta0
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US Patent 07954956 Projection-type display apparatus US Patent 7954956 Projection-type display apparatus
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Patent Number
07954956
Patent Number
7954956
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US Patent 07954956 Projection-type display apparatus
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Is a
Patent jurisdiction
Patent number
07954956
Date of patent
June 7, 2011
Patent application number
12042645
Date Filed
March 5, 2008
Patent primary examiner
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