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:
Feb. 01, 2011
Filed:
Aug. 06, 2008
Atsushi Michimori, Tokyo, JP;
Norihiro Watanabe, Tokyo, JP;
Masao Narita, Tokyo, JP;
Hideaki Arita, Tokyo, JP;
Atsushi Michimori, Tokyo, JP;
Norihiro Watanabe, Tokyo, JP;
Masao Narita, Tokyo, JP;
Hideaki Arita, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In a projection-type image display device, a driven member of a screen is displaced in a plane parallel to the screen. The driven member can be a Fresnel lens or a diffusing member. An elastic retaining unit holds the driven member in such a manner as to be capable of moving in the plane parallel to the screen, and a pair of driving sources applies driving forces in mutually intersecting directions to the driven member. A control circuit drives the pair of driving sources with driving waveforms having a prescribed phase difference therebetween so that the driven member makes continuous motion in a plane parallel to the screen when an image is projected.