发明申请
- 专利标题： Near Field Optical Head and Information Recording and Reproducing Device
- 专利标题（中）： 近场光头和信息记录和再现设备
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申请号： US12733982申请日： 2008-10-03
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公开(公告)号： US20110007621A1公开(公告)日： 2011-01-13
- 发明人: Majung Park , Manabu Oumi , Masakazu Hirata
- 申请人： Majung Park , Manabu Oumi , Masakazu Hirata
- 优先权： JP2007-260566 20071004
- 国际申请： PCT/JP2008/068024 WO 20081003
- 主分类号： G11B7/135
- IPC分类号： G11B7/135
摘要：
A near field optical head includes: a slider provided so as to float from a surface of the magnetic recording medium by a predetermined distance, the slider having a facing surface faced to a surface of the magnetic recording medium; a tipped-shaped near field light generating element formed on the facing surface to have a bottom surface in contact with the facing surface, a top surface formed into a flat surface by cutting a top end of a cone or a pyramid, the flat surface being at a predetermined angle with the bottom surface, and a side surface connecting the bottom surface with the top surface for generating near field light from the top surface; a magnetic pole part formed from a main magnetic pole formed on the side surface and an auxiliary magnetic pole facing the main magnetic pole; a thin film-shaped magnetic circuit connected to the magnetic pole part; and a coil wound around the magnetic circuit.
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