Invention Grant
- Patent Title: Thermally-assisted magnetic recording head with plane-emission type light source
- Patent Title (中): 具有平面发射型光源的热辅助磁记录头
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Application No.: US12581385Application Date: 2009-10-19
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Publication No.: US08223596B2Publication Date: 2012-07-17
- Inventor: Tsutomu Chou , Eiji Komura , Koji Shimazawa , Seiichi Takayama
- Applicant: Tsutomu Chou , Eiji Komura , Koji Shimazawa , Seiichi Takayama
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Frommer Lawrence & Haug LLP
- Main IPC: G11B11/00
- IPC: G11B11/00

Abstract:
A thermally-assisted magnetic recording head includes a surface-emitting type light source for emitting substantially collimated beam, a first diffraction optical element for focusing the substantially collimated beam emitted from the surface-emitting type light source, a second diffraction optical element for collimating the light beam focused by the first diffraction optical element, a waveguide integrally formed with the second diffraction optical element and made of the material as that of second diffraction optical element, the light beam collimated by the second diffraction optical element being incident to the waveguide, an optical-path direction conversion element for converting a direction of an optical path of the incident light beam to a propagation direction of the waveguide, the propagation direction being toward an opposed-to-medium surface, and a magnetic pole for generating write field from its end face on the opposed-to-medium surface side.
Public/Granted literature
- US20110090587A1 Thermally-Assisted Magnetic Recording Head With Plane-Emission Type Light Source Public/Granted day:2011-04-21
Information query
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