发明公开
EP1717802A1 PIckup for optical recording media
审中-公开
Abtastvorrichtungfüroptische Aufzeichnungsmedien
- 专利标题: PIckup for optical recording media
- 专利标题(中): Abtastvorrichtungfüroptische Aufzeichnungsmedien
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申请号: EP05009102.4申请日: 2005-04-26
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公开(公告)号: EP1717802A1公开(公告)日: 2006-11-02
- 发明人: Khrouchhtchev, Serguei
- 申请人: DEUTSCHE THOMSON-BRANDT GMBH
- 申请人地址: Hermann-Schwer-Strasse 3 78048 Villingen-Schwenningen DE
- 专利权人: DEUTSCHE THOMSON-BRANDT GMBH
- 当前专利权人: DEUTSCHE THOMSON-BRANDT GMBH
- 当前专利权人地址: Hermann-Schwer-Strasse 3 78048 Villingen-Schwenningen DE
- 代理机构: Rittner, Karsten
- 主分类号: G11B7/125
- IPC分类号: G11B7/125 ; G11B7/13 ; G11B7/135
摘要:
The invention relates to a pickup (1) for optical recording media including a monitor diode (14) for light power feedback, the pickup (1) having an increased efficiency and a reduced number of components, and to an apparatus for reading from and/or writing to optical recording media including such a pickup (1).
According to the invention, a pickup (1) for optical recording media includes a light source (2) for emitting a light beam, a monitor diode (14) for obtaining a light power feedback signal, and an optical element (7) for changing a property of the light beam, wherein the optical element (7) has a surface that is inclined with respect to the optical axis and reflects a part of the light beam towards the monitor diode (14).
According to the invention, a pickup (1) for optical recording media includes a light source (2) for emitting a light beam, a monitor diode (14) for obtaining a light power feedback signal, and an optical element (7) for changing a property of the light beam, wherein the optical element (7) has a surface that is inclined with respect to the optical axis and reflects a part of the light beam towards the monitor diode (14).
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