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:
Jul. 22, 2014
Filed:
Sep. 13, 2011
Masakazu Hirata, Chiba, JP;
Norio Chiba, Chiba, JP;
Manabu Oumi, Chiba, JP;
Yoko Shinohara, Chiba, JP;
Sachiko Tanabe, Chiba, JP;
Yoshikazu Tanaka, Chiba, JP;
Masakazu Hirata, Chiba, JP;
Norio Chiba, Chiba, JP;
Manabu Oumi, Chiba, JP;
Yoko Shinohara, Chiba, JP;
Sachiko Tanabe, Chiba, JP;
Yoshikazu Tanaka, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A near-field light generating element has a core that propagates light flux from a light incident side to a light emission side while focusing the propagating light flux. A near-field light generating portion in the form of a metal film generates near-field light from the light flux. The core includes a first core, and a second core covering a side surface of the first core, and the core is formed in a polygonal shape when viewed from a Z direction. The metal film is placed on a side surface in the core, and is formed so that a width of an interface between the metal film and the core is narrower than a width of the side surface of the core.