发明授权
- 专利标题： Light source unit including a photodetector, and thermally-assisted magnetic recording head
- 专利标题（中）： 光源单元包括光电检测器和热辅助磁记录头
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申请号： US12986532申请日： 2011-01-07
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公开(公告)号： US08437237B2公开(公告)日： 2013-05-07
- 发明人: Eiji Komura , Tsutomu Chou , Koji Shimazawa
- 申请人： Eiji Komura , Tsutomu Chou , Koji Shimazawa
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oliff & Berridge, PLC
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
A light source unit includes a light source and a photodetector. The light source has an emission part for emitting light. The photodetector has a light receiving surface for receiving the light emitted from the emission part, and detects the light. The light source unit further includes a grating made of metal and disposed to extend along the light receiving surface. The grating includes a plurality of line-shaped portions that each extend in a direction intersecting the direction of travel of the light and that are located at positions different from each other along the direction of travel of the light.
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