发明授权
US07366060B2 Method for forming optical aperture, near-field optical head, method for fabricating near-field optical head, and information recording/reading apparatus
有权
用于形成光学孔径的方法，近场光学头，用于制造近场光学头的方法以及信息记录/读取装置
- 专利标题： Method for forming optical aperture, near-field optical head, method for fabricating near-field optical head, and information recording/reading apparatus
- 专利标题（中）： 用于形成光学孔径的方法，近场光学头，用于制造近场光学头的方法以及信息记录/读取装置
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申请号： US11360279申请日： 2006-02-23
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公开(公告)号： US07366060B2公开(公告)日： 2008-04-29
- 发明人: Takashi Niwa , Kenji Kato , Yasuyuki Mitsuoka , Manabu Oumi , Nobuyuki Kasama , Susumu Ichihara , Hidetaka Maeda , Yoko Shinohara
- 申请人： Takashi Niwa , Kenji Kato , Yasuyuki Mitsuoka , Manabu Oumi , Nobuyuki Kasama , Susumu Ichihara , Hidetaka Maeda , Yoko Shinohara
- 申请人地址： JP
- 专利权人： Seiko Instruments Inc.
- 当前专利权人： Seiko Instruments Inc.
- 当前专利权人地址： JP
- 代理机构： Adams & Wilks
- 优先权： JP2000-173852 20000609; JP2000-371828 20001206; JP2000-379266 20001213; JP2001-126415 20010424
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
A near-field optical head has a main surface confronting a recording medium during use of the near-field optical head. A sharpened tip is disposed on the main surface and has an optical aperture at a front end thereof. An opaque film covers the sharpened tip and has a plastically deformed portion in the vicinity of the optical aperture. The front end of the sharpened tip projects from the plastically deformed portion of the opaque film. At least one stopper is disposed in the vicinity of the sharpened tip and has a height substantially equal to a height of the sharpened tip. At least one air-bearing surface is disposed on the main surface.