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. 21, 2010
Filed:
Sep. 05, 2008
Koji Shimazawa, Tokyo, JP;
Eiji Komura, Tokyo, JP;
Yasuhiro Ito, Tokyo, JP;
Seiichi Takayama, Tokyo, JP;
Satoshi Tomikawa, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
Kosuke Tanaka, Tokyo, JP;
Koji Shimazawa, Tokyo, JP;
Eiji Komura, Tokyo, JP;
Yasuhiro Ito, Tokyo, JP;
Seiichi Takayama, Tokyo, JP;
Satoshi Tomikawa, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
Kosuke Tanaka, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
Provided is a near-field light generating element capable of avoiding excessive temperature rise, which comprises a waveguide and a near-field light generating layer. The layer comprises: a propagation surface on which surface plasmon excited by the light propagates; and a near-field light generating end at which near-field light is generated. The end is one end of the propagation surface. And a portion of the side surface of the waveguide is opposed to a portion of the propagation surface of the near-field light generating layer with a predetermined spacing so that the light propagating through the waveguide is coupled with the near-field light generating layer in a surface plasmon mode. The near-field light generating layer is preferably tapered toward the near-field light generating end.