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. 03, 2007
Filed:
Jul. 31, 2003
Applicants:
Hisashi Iechika, Shiojiri, JP;
Yuji Takado, Matsumoto, JP;
Inventors:
Hisashi Iechika, Shiojiri, JP;
Yuji Takado, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1333 (2006.01); G03B 21/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A prism structure that comprises of a combination of a plurality of modulators and a color-combining prism is provided, wherein light shielding means having an opening in the center are arranged between the modulators and the color-combing prism. The light shielding means allows image light to pass through the opening and blocks light from the periphery of the image light. The light shielding means allows linear stray light and spot-like stray light from the periphery of the image light to be effectively removed thereby improving image quality.