The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2011
Filed:
Jul. 17, 2009
Shu Namba, Osaka, JP;
Naoko Yamashita, Hyogo, JP;
Daisuke Yaeo, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A projection type display apparatus includes a plurality of light sources-, a display device unit, a light-combining unitthat combines output light from the plural light sources, a condensing unitthat propagates output light from the light-combining unit to the display device unit, and a projecting unitthat projects an image by the use of output light from the display device unit. In the projection type display apparatus, cooling units having fans-are disposed respectively on the plural light sources, and a controlling unitis provided to control the cooling units. Information regarding the lighting state of the plural light sources is inputted into the controlling unit, and the controlling unit controls a rotation rate of the fans of the cooling units with reference to the information. Concerning a case of temperature management of a plurality of light sources used, an accurate and reliable control is performed; problems such as whitening of the light sources, degradation of life property, blacking, brightness degradation and the like are suppressed, thereby high quality and high reliability are obtained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile