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:
Apr. 02, 2002
Filed:
Jul. 22, 1999
Applicant:
Inventor:
Masaharu Eguchi, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 2/100 ;
U.S. Cl.
CPC ...
G03B 2/100 ;
Abstract
Disclosed is an image projection apparatus including a display device which has a plurality of pixel apertures and displays image information, an illumination optical unit for illuminating the display device, a projection optical unit for projecting the image information displayed on the display device on a predetermined surface, and a blower for blowing air to the atmosphere in the display device. Dust affecting a projected image is prevented from attaching near the display device.
Eguchi, Masaharu. (2002). Image projection apparatus (U.S. Patent No. 6364489). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6364489
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