发明公开
- 专利标题： Pickup for optical recording medium
- 专利标题（中）： 欧洲食品安全中心（Aufzeichnungsmedium）
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申请号： EP06300541.7申请日： 2006-06-01
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公开(公告)号： EP1736977A1公开(公告)日： 2006-12-27
- 发明人: Knittel, Joachim , Richter, Hartmut , Pilard, Gael
- 申请人： Thomson Licensing
- 申请人地址： 46, quai Alphonse Le Gallo 92100 Boulogne-Billancourt FR
- 专利权人： Thomson Licensing
- 当前专利权人： Thomson Licensing
- 当前专利权人地址： 46, quai Alphonse Le Gallo 92100 Boulogne-Billancourt FR
- 代理机构： Thies, Stephan
- 优先权： EP05012989 20050616
- 主分类号： G11B7/135
- IPC分类号： G11B7/135 ; G11B7/14 ; G02B5/18
摘要：
The invention relates to an optical pickup for an optical recording medium (1), an electrically controlled diffraction grating (11) suitable for use in such a pickup, and to an apparatus for reading from and/or writing to optical recording media (1) using such an optical pickup or diffraction grating (11).
According to the invention, an optical pickup for optical recording media (1) having two or more data tracks (4), with a light source (10) for emitting a light beam for reading from and/or writing to an optical recording medium (1), includes an electrically controlled diffraction grating (11), which is switchable between at least two states for generating one or more light beams from the light beam emitted by the light source (10) for reading from and/or writing to one or more of the data tracks (4).
According to the invention, an optical pickup for optical recording media (1) having two or more data tracks (4), with a light source (10) for emitting a light beam for reading from and/or writing to an optical recording medium (1), includes an electrically controlled diffraction grating (11), which is switchable between at least two states for generating one or more light beams from the light beam emitted by the light source (10) for reading from and/or writing to one or more of the data tracks (4).
公开/授权文献
- EP1736977B1 Pickup for optical recording medium 公开/授权日：2009-08-12
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