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. 11, 2011
Filed:
Oct. 30, 2009
Applicants:
Takao Endo, Tokyo, JP;
Yuzo Nakano, Tokyo, JP;
Hayato Takeuchi, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/56 (2006.01); G03B 21/60 (2006.01);
U.S. Cl.
CPC ...
Abstract
A Fresnel lens screenis comprised of a light entering surface partial total reflection type Fresnel lens, a first light diffusing partdisposed behind the Fresnel lens, and a first base. An image display elementdisposed behind the Fresnel lens screenhas a lens element, a second base, and a third base. Second light diffusing partsare disposed behind the second base. Each of the second light diffusing partsincludes two types of particulates having different particle sizes which are distributed therein.