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:
Mar. 16, 2021
Filed:
Aug. 03, 2017
Sony Corporation, Tokyo, JP;
Akihiro Miyazaki, Kanagawa, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
Provided is a projection-type image display apparatus in which dust collected on a filter can be removed more efficiently. The projection-type image display apparatus includes an image projection section configured to generate and project an image, a cabinet section that houses the image projection section in an interior and is provided with at least one or more air inlets, a passage section through which outside air taken in from the air inlet flows, a filter section provided in the passage section, an impact application section that strikes the filter section, and a control section that controls the impact application section so as to strike the filter section at a timing when the filter section vibrating by striking of the impact application section is moving toward the impact application section.