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:
Dec. 08, 2009
Filed:
May. 22, 2006
Applicants:
Suguru Sangu, Tokyo, JP;
Hiroaki Fukuda, Tokyo, JP;
Masato Takada, Kanagawa, JP;
Izumi Itoh, Tokyo, JP;
Junichi Takahashi, Kanagawa, JP;
Taroh Terashi, Tokyo, JP;
Inventors:
Suguru Sangu, Tokyo, JP;
Hiroaki Fukuda, Tokyo, JP;
Masato Takada, Kanagawa, JP;
Izumi Itoh, Tokyo, JP;
Junichi Takahashi, Kanagawa, JP;
Taroh Terashi, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polarization control device includes a support substrate on which a metal compound structure is formed. The metal compound structure is formed with at least two metal fine structures arranged periodically in a range equal to or smaller than a wavelength of an incident light.