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. 11, 2013
Filed:
Sep. 07, 2011
Applicants:
Jun Nakagawa, Yokohama, JP;
Koichiro Nakamura, Yokohama, JP;
Shuichi Suzuki, Yokohama, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/295 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrooptic element includes an optical waveguide layer made from a ferroelectric material and having a polarization inverted region of a predetermined shape having an optical incidence face and an optical exit face, and an upper electrode layer and a lower electrode layer formed on a top face and a bottom face of the optical waveguide layer, respectively, in which the ferroelectric material is magnesium-oxide-doped lithium niobate, and at least one of the optical incidence face and the optical exit face of the optical waveguide layer is formed in parallel with a crystal face of the ferroelectric material.