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:
Sep. 04, 2012
Filed:
Apr. 15, 2011
Applicants:
Kazuhiro Yamada, Osaka, JP;
Takamasa Tamura, Osaka, JP;
Motonobu Yoshikawa, Osaka, JP;
Hiroshi Yamaguchi, Osaka, JP;
Kazuhiko Ishimaru, Osaka, JP;
Inventors:
Kazuhiro Yamada, Osaka, JP;
Takamasa Tamura, Osaka, JP;
Motonobu Yoshikawa, Osaka, JP;
Hiroshi Yamaguchi, Osaka, JP;
Kazuhiko Ishimaru, Osaka, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A diffusing plate is formed so as to have a surface having a larger surface roughness than a predetermined wavelength and having an aperiodic roughness shape. A plurality of fine concave/convex portions are formed on the surface so as to be arranged within a cycle equal to and smaller than a predetermined wavelength.