Invention Grant
- Patent Title: Near-field light head and information recording/reproducing device
- Patent Title (中): 近场光头和信息记录/再现装置
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Application No.: US12668076Application Date: 2008-07-10
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Publication No.: US08842504B2Publication Date: 2014-09-23
- Inventor: Masakazu Hirata , Manabu Oumi , Majung Park
- Applicant: Masakazu Hirata , Manabu Oumi , Majung Park
- Applicant Address: JP Chiba-Shi
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP Chiba-Shi
- Agency: Grossman, Tucker, Perreault & Pfleger, PLLC
- Priority: JP2007-181037 20070710
- International Application: PCT/JP2008/062525 WO 20080710
- International Announcement: WO2009/008488 WO 20090115
- Main IPC: G11B5/02
- IPC: G11B5/02 ; G11B5/60 ; G11B5/48 ; G11B5/31 ; G11B5/00

Abstract:
A near-field light head of the present invention includes: a slider disposed opposite to a surface of the magnetic recording medium; a recording element that includes a main magnetic pole generating the recording magnetic field and a subsidiary magnetic pole, the recording element being fixed to an apical surface of the slider so that the main magnetic pole and the subsidiary magnetic pole line up in a longitudinal direction of the slider in the state where the subsidiary magnetic pole is located at the apical surface of the slider; a near-field light generating element, fixed adjacently to the main magnetic pole in a state where another end side thereof is directed to the magnetic recording medium, that propagates the light flux introduced from one end side thereof toward the other end side to generate the near-field light, and radiates the near-field light from the other end side to the outside; and a light flux introducing device, fixed to the slider, that introduces the light flux from the one end side into the near-field light generating element. The near-field light generating element includes an inclined surface, which is inclined with respect to an optical axis of the light flux propagated through the inside thereof and is opposite to the main magnetic pole, in the other end side. A metallic film that increases light intensity of the near-field light to be increased is formed in the inclined surface.
Public/Granted literature
- US20110141861A1 NEAR-FIELD LIGHT HEAD AND INFORMATION RECORDING/REPRODUCING DEVICE Public/Granted day:2011-06-16
Information query
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