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    • 1. 发明申请
    • Compatible optical recording medium
    • 兼容光学记录介质
    • US20100002559A1
    • 2010-01-07
    • US12311671
    • 2007-09-24
    • Joachim KnittelHartmut RichterAlan Bruce Hamersley
    • Joachim KnittelHartmut RichterAlan Bruce Hamersley
    • G11B7/135G11B7/26G11B7/00
    • G11B7/24079G11B7/1374G11B2007/24308G11B2007/24314
    • The optical recording medium has a recording layer sensitive for recording at a first wavelength and sensitive for reading at a second wavelength, the recording layer having a groove structure, wherein at the first wavelength the groove structure has a diffraction efficiency into a first diffraction order sufficiently large to generate a push-pull signal, and at the second wavelength it has a diffraction efficiency into a first diffraciton order close to zero. The optical pickup for recording on an optical recording medium intended to be read with a second wavelength and a second numerical aperture is characterized in that it has a light source for generating a light beam at a first wavelength and a numerical aperture given by the second numerical aperture multiplied with a ration of the first wavelength and the second wavelength.
    • 光记录介质具有对第一波长进行记录敏感并对第二波长进行读取敏感的记录层,记录层具有凹槽结构,其中在第一波长处,凹槽结构的衍射效率充分地成为第一衍射级 大以产生推挽信号,并且在第二波长处,它具有接近零的第一差分级的衍射效率。 用于在旨在用第二波长和第二数值孔径读取的光记录介质上记录的光学拾取器的特征在于,其具有用于产生第一波长的光束和由第二数值给出的数值孔径的光源 孔径乘以第一波长和第二波长的比例。
    • 2. 发明授权
    • Compatible optical recording medium
    • 兼容光学记录介质
    • US08213289B2
    • 2012-07-03
    • US12311671
    • 2007-09-24
    • Joachim KnittelHartmut RichterAlan Bruce Hamersley
    • Joachim KnittelHartmut RichterAlan Bruce Hamersley
    • G11B7/00
    • G11B7/24079G11B7/1374G11B2007/24308G11B2007/24314
    • The optical recording medium has a recording layer sensitive for recording at a first wavelength and sensitive for reading at a second wavelength, the recording layer having a groove structure, wherein at the first wavelength the groove structure has a diffraction efficiency into a first diffraction order sufficiently large to generate a push-pull signal, and at the second wavelength it has a diffraction efficiency into a first diffraction order close to zero. The optical pickup for recording on an optical recording medium intended to be read with a second wavelength and a second numerical aperture is characterized in that it has a light source for generating a light beam at a first wavelength and a numerical aperture given by the second numerical aperture multiplied with a ration of the first wavelength and the second wavelength.
    • 光记录介质具有对第一波长进行记录敏感并对第二波长进行读取敏感的记录层,记录层具有凹槽结构,其中在第一波长处,凹槽结构的衍射效率充分地成为第一衍射级 大以产生推挽信号,并且在第二波长处,它具有接近零的第一衍射级的衍射效率。 用于在旨在用第二波长和第二数值孔径读取的光记录介质上记录的光学拾取器的特征在于,其具有用于产生第一波长的光束和由第二数值给出的数值孔径的光源 孔径乘以第一波长和第二波长的比例。
    • 4. 发明授权
    • Optical pickup
    • 光学拾音
    • US07541564B2
    • 2009-06-02
    • US11439691
    • 2006-05-23
    • Joachim KnittelHartmut RichterGael Pilard
    • Joachim KnittelHartmut RichterGael Pilard
    • G02B7/04G02B27/40G02B27/64
    • G02B5/1828G11B7/0903G11B7/1353G11B7/1369G11B7/14G11B7/24
    • The invention relates to an optical pickup for an optical recording medium, an electrically controlled diffraction grating suitable for use in such a pickup, and to an apparatus for reading from and/or writing to optical recording media using such an optical pickup or diffraction grating.According to the invention, an optical pickup for optical recording media having two or more data tracks, with a light source for emitting a light beam for reading from and/or writing to an optical recording medium, includes an electrically controlled diffraction grating, which is switchable between at least two states for generating one or more light beams from the light beam emitted by the light source for reading from and/or writing to one or more of the data tracks.
    • 本发明涉及一种用于光学记录介质的光学拾取器,适用于这种拾取器的电子控制衍射光栅,以及使用这种光学拾取器或衍射光栅从光学记录介质读取和/或写入光学记录介质的设备。 根据本发明,具有两个或多个数据磁道的光学记录介质的光学拾取器,具有用于发出用于从光学记录介质读取和/或写入光学记录介质的光束的光源,包括电控衍射光栅,其是 在至少两个状态之间切换,用于从由光源发射的光束产生一个或多个光束,用于从一个或多个数据轨道读取和/或写入数据轨道。
    • 7. 发明申请
    • Pickup for optical recording medium
    • 拾取光记录介质
    • US20060285471A1
    • 2006-12-21
    • US11439691
    • 2006-05-23
    • Joachim KnittelHartmut RichterGael Pilard
    • Joachim KnittelHartmut RichterGael Pilard
    • G11B7/135
    • G02B5/1828G11B7/0903G11B7/1353G11B7/1369G11B7/14G11B7/24
    • The invention relates to an optical pickup for an optical recording medium, an electrically controlled diffraction grating suitable for use in such a pickup, and to an apparatus for reading from and/or writing to optical recording media using such an optical pickup or diffraction grating. According to the invention, an optical pickup for optical recording media having two or more data tracks, with a light source for emitting a light beam for reading from and/or writing to an optical recording medium, includes an electrically controlled diffraction grating, which is switchable between at least two states for generating one or more light beams from the light beam emitted by the light source for reading from and/or writing to one or more of the data tracks.
    • 本发明涉及一种用于光学记录介质的光学拾取器,适用于这种拾取器的电子控制衍射光栅,以及使用这种光学拾取器或衍射光栅从光学记录介质读取和/或写入光学记录介质的设备。 根据本发明,具有两个或多个数据磁道的光学记录介质的光学拾取器,具有用于发出用于从光学记录介质读取和/或写入光学记录介质的光束的光源,包括电控衍射光栅,其是 在至少两个状态之间切换,用于从由光源发射的光束产生一个或多个光束,用于从一个或多个数据轨道读取和/或写入数据轨道。
    • 9. 发明授权
    • Compact pickup for micro optical drive
    • 微型光驱的紧凑型拾音器
    • US07852714B2
    • 2010-12-14
    • US11920818
    • 2006-05-03
    • Joachim KnittelHartmut Richter
    • Joachim KnittelHartmut Richter
    • G11B7/00
    • G11B7/121G11B7/08576G11B7/0932G11B7/124G11B7/1362
    • The invention relates to a compact optical pickup for a micro optical drive, and to a micro optical drive using this compact optical pickup. According to the invention a pickup for optical recording media includes a light source for generating a light beam for reading from and/or writing to an optical recording medium, a flexible arm serving as a focus actuator, an objective lens situated on the flexible arm for focusing the light beam onto the optical recording medium, an optical bench for directing the light beam towards the optical recording medium one or more detectors for detecting the light beam reflected by the optical recording medium, and a mirror, which is arranged inclined with respect to a transparent block of the optical bench, for directing the light beam reflected by the optical recording medium towards a first detector.
    • 本发明涉及一种用于微型光驱的紧凑型光学拾取器以及使用该紧凑型光学拾取器的微型光学驱动器。 根据本发明,用于光记录介质的拾取器包括用于产生用于从光记录介质读取和/或写入光记录介质的光束的光源,用作聚焦致动器的柔性臂,位于柔性臂上的物镜 将光束聚焦到光学记录介质上,用于将光束引导到光学记录介质的一个或多个检测器,用于检测由光学记录介质反射的光束的光学台,以及相对于 光学台的透明块,用于将由光学记录介质反射的光束引向第一检测器。