Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Noboru Nabeta0
Date of Patent
June 7, 2011
Patent Application Number
12042645
Date Filed
March 5, 2008
Patent Primary Examiner
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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