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. 23, 2013
Filed:
Mar. 08, 2012
Masakazu Hirata, Chiba, JP;
Norio Chiba, Chiba, JP;
Manabu Oumi, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A metal film is included which is placed between a core and a cladding, propagates a laser beam along an interface between the core and the cladding, and generates a near-field light from the laser beam. The metal film has a base portion placed on one side surface of the core along a propagation direction of the laser beam facing from one end side toward the other end side, and an extending portion extended from the other end side of the base portion to the other end side in the propagation direction rather than the core. The other end side of the extending portion is exposed to the outside, and is formed with a top portion projected toward the core side when viewed from the propagation direction.