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:
Nov. 25, 2014
Filed:
Aug. 25, 2010
Shuichi Suzuki, Yokohama, JP;
Atsushi Sakai, Yokohama, JP;
Koichiro Nakamura, Yokohama, JP;
Jun Nakagawa, Yokohama, JP;
Shuichi Suzuki, Yokohama, JP;
Atsushi Sakai, Yokohama, JP;
Koichiro Nakamura, Yokohama, JP;
Jun Nakagawa, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electro-optical element includes a core layer made of an electro-optical material, a clad structure disposed on each of opposite sides of the core layer and configured to form an optical waveguide together with the core layer, and a pair of electrode layers, one of which being disposed on one side of the clad structure and another being disposed on another side of the clad structure. The clad structure includes a first clad layer and a second layer. The second clad layer has a dielectric permittivity larger than that of the first clad layer, and the second clad layer has a thickness thicker than that of the first clad layer.