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:
Jun. 24, 2014
Filed:
Aug. 24, 2012
Applicant:
Takayuki Fujikawa, Nagoya, JP;
Inventor:
Takayuki Fujikawa, Nagoya, JP;
Assignee:
Denson Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
A screen member has a plurality of optical elements, each of which includes a primary curved surface and two secondary curved surface. The primary curved surface diffuses a bundle of rays of light toward a main-viewing range through a display member. Each secondary curved surface diffuses the bundle of rays of light toward a corresponding sub-viewing range through the display member. A radius of curvature of the primary curved surface is larger than a radius of curvature of the secondary curved surface.