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:
Apr. 07, 2026
Filed:
Jul. 30, 2021
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Takashi Kikukawa, Tokyo, JP;
Tsuyoshi Komaki, Tokyo, JP;
Hideaki Fukuzawa, Tokyo, JP;
Hiroki Hara, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/225 (2006.01); G02F 1/035 (2006.01); G02F 1/21 (2006.01);
U.S. Cl.
CPC ...
G02F 1/2255 (2013.01); G02F 1/212 (2021.01); G02F 1/035 (2013.01);
Abstract
A visible light modulation device includes a light source part having a plurality of optical semiconductor devices configured to emit light with a visible light wavelength of 400 nm to 700 nm, and a light modulation output part having three Mach-Zehnder type optical waveguides consisting of a convex fabricated lithium niobate film, and being configured so that light emitted from each of the plurality of optical semiconductor devices is incident on the corresponding Mach-Zehnder type optical waveguide.