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:
Oct. 07, 2008
Filed:
Jul. 02, 2003
Applicants:
Shigeki Hashimoto, Tokyo, JP;
Hiroki Kikuchi, Kanagawa, JP;
Michio Oka, Tokyo, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/00 (2006.01); G02B 27/10 (2006.01); G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Speckle noise is reduced to increase image quality in an image display apparatus such as a projection display or the like. An illuminating optical device in an image display apparatus () applies a laser beam L to a GLV (spatial modulator) () and modulates the laser beam based on an image signal input to the GLV to display an image. A plurality of laser beams (. . . ) each having an optical path difference greater than the coherence length of the laser beam are applied to the GLV.