发明授权
- 专利标题: Optical recording head device, optical recording apparatus, and recording method
- 专利标题(中): 光记录头装置,光记录装置和记录方法
-
申请号: US12257213申请日: 2008-10-23
-
公开(公告)号: US08077586B2公开(公告)日: 2011-12-13
- 发明人: Kazuo Watabe , Takashi Usui , Keiichiro Yusu , Chosaku Noda , Kazuto Kuroda , Nobuaki Kaji , Masahiro Saito
- 申请人: Kazuo Watabe , Takashi Usui , Keiichiro Yusu , Chosaku Noda , Kazuto Kuroda , Nobuaki Kaji , Masahiro Saito
- 申请人地址: JP
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP
- 代理机构: Knobbe, Martens, Olson & Bear LLP
- 优先权: JP2007-275391 20071023; JP2008-035174 20080215
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
According to one embodiment, an optical recording head device includes a light source which outputs such a relaxation oscillation optical pulse that a full width at half maximum of a single pulse is 820 ps or less, a driving unit for driving the light source, an objective lens which converges emission light from the light source on a recording layer of a recording medium, and captures reflective light which is reflected by the recording layer of the recording medium, a distribution unit, placed between the light source and the objective lens, for distributing incident light, and a photodetection unit for receiving via the distribution unit the reflective light which is reflected by the recording layer of the recording medium, wherein a resonator length of the light source is 6560 μm or less.
公开/授权文献
信息查询
IPC分类: