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    Phase conjugate reconstruction of a hologram
    1.
    发明授权
    Phase conjugate reconstruction of a hologram 有权
    全息图的相位共轭重建

    公开(公告)号：US07548358B2

    公开(公告)日：2009-06-16

    申请号：US11440447

    申请日：2006-05-25

    申请人： Brian Riley ,  Ken E. Anderson ,  Kevin R. Curtis

    发明人： Brian Riley ,  Ken E. Anderson ,  Kevin R. Curtis

    IPC分类号： G03H1/12 ,  G03H1/26 ,  G03H1/22

    CPC分类号： G11B7/0065 ,  G03H1/22 ,  G03H2222/56

    摘要： Methods and systems are provided for obtaining a phase conjugate reconstruction beam for use in retrieving holographic information from a holographic storage medium. These methods and systems include generating a coherent light beam that is a reproduction of the reference beam used in storing the holographic information in the storage medium. This coherent light beam is then directed through the holographic storage medium at the same angle and location of the reference beam during recording of the hologram. The directed coherent beam is then reflected back through the storage medium so that the reflected coherent light beam provides a phase conjugate of the reference beam and passes through the storage medium at the same angle and location that the reference beam passed through the storage medium during recordation of the hologram.

    摘要翻译： 提供了用于获得用于从全息存储介质检索全息信息的相位共轭重建光束的方法和系统。 这些方法和系统包括产生相干光束，其是用于将全息信息存储在存储介质中的参考光束的再现。 然后在记录全息图期间，该相干光束以参考光束的相同角度和位置被引导通过全息存储介质。 然后将定向相干光束通过存储介质反射回，使得反射的相干光束提供参考光束的相位共轭，并以与参考光束在记录期间通过存储介质相同的角度和位置通过存储介质 的全息图。

    Optical pickup, optical information recording and reproducing apparatus and method for optically recording and reproducing information
    2.
    发明授权
    Optical pickup, optical information recording and reproducing apparatus and method for optically recording and reproducing information 有权
    用于光学记录和再现信息的光学拾取器，光学信息记录和再现装置和方法

    公开(公告)号：US08004950B2

    公开(公告)日：2011-08-23

    申请号：US12038174

    申请日：2008-02-27

    申请人： Tatsuro Ide ,  Kenichi Shimada ,  Masahiko Takahashi ,  Takeshi Shimano ,  Kevin R. Curtis ,  Ken E. Anderson

    发明人： Tatsuro Ide ,  Kenichi Shimada ,  Masahiko Takahashi ,  Takeshi Shimano ,  Kevin R. Curtis ,  Ken E. Anderson

    IPC分类号： G11B7/00

    CPC分类号： G11B7/00772 ,  G03H1/041 ,  G11B7/1353 ,  G11B7/1378

    摘要： An optical pickup for recording a hologram by using an angle multiplexing method. An optical beam is separated into two beams, a signal beam and a reference beam having different convergence/divergence degrees, by using an optical component such as a diffraction lens. The signal and reference beams are made incident upon the same objective, and the optical component or the objective lens is moved in a direction perpendicular to an optical axis, to thereby realize angle multiplex recording. If an optical information recording medium is inclined, the optical component or the objective lens is moved along the direction along which the optical information recording medium moved to change an angle of the reference beam incident upon the optical information recording medium and compensate for degradation of a reproduction signal.

    摘要翻译： 一种用于通过使用角度复用方法记录全息图的光学拾取器。 通过使用诸如衍射透镜的光学部件，将光束分离成两束，信号光束和具有不同会聚/发散度的参考光束。 信号和参考光束入射到相同的物镜上，并且光学部件或物镜在垂直于光轴的方向上移动，从而实现角度多路复用记录。 如果光学信息记录介质倾斜，则光学部件或物镜沿着光学信息记录介质移动的方向移动以改变入射在光学信息记录介质上的参考光束的角度并补偿光学信息记录介质的劣化 再现信号。

    Short stack recording in holographic memory systems
    3.
    发明授权
    Short stack recording in holographic memory systems 有权
    全息记录系统中的短栈记录

    公开(公告)号：US07589877B2

    公开(公告)日：2009-09-15

    申请号：US11291840

    申请日：2005-12-02

    申请人： Ken E. Anderson ,  William L. Wilson ,  Kevin R. Curtis

    发明人： Ken E. Anderson ,  William L. Wilson ,  Kevin R. Curtis

    IPC分类号： G03H1/28 ,  G03H1/30

    CPC分类号： G11B7/0065 ,  G03H1/26

    摘要： The present invention provides one or more books of holograms recorded in a recording medium, wherein two or more short stacks of the one or more books have locations that differ from each other by a movement difference. The present invention also provides methods and devices for recording and reading holograms from the one or more books of holograms.

    摘要翻译： 本发明提供记录在记录介质中的一本或多本全息图，其中一个或多个书籍的两个或更多个短堆栈具有彼此不同的移动差异的位置。 本发明还提供了用于从一张或多张全息图书记录和读取全息图的方法和装置。

    OPTICAL PICKUP, OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS AND METHOD FOR OPTICALLY RECORDING AND REPRODUCING INFORMATION
    4.
    发明申请
    OPTICAL PICKUP, OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS AND METHOD FOR OPTICALLY RECORDING AND REPRODUCING INFORMATION 有权
    光学拾取，光学信息记录和再现设备以及用于光学记录和再现信息的方法

    公开(公告)号：US20080219128A1

    公开(公告)日：2008-09-11

    申请号：US12038174

    申请日：2008-02-27

    申请人： Tatsuro Ide ,  Kenichi Shimada ,  Masahiko Takahashi ,  Takeshi Shimano ,  Kevin R. Curtis ,  Ken E. Anderson

    发明人： Tatsuro Ide ,  Kenichi Shimada ,  Masahiko Takahashi ,  Takeshi Shimano ,  Kevin R. Curtis ,  Ken E. Anderson

    IPC分类号： G11B7/00

    CPC分类号： G11B7/00772 ,  G03H1/041 ,  G11B7/1353 ,  G11B7/1378

    摘要： An optical pickup for recording a hologram by using an angle multiplexing method. An optical beam is separated into two beams, a signal beam and a reference beam having different convergence/divergence degrees, by using an optical component such as a diffraction lens. The signal and reference beams are made incident upon the same objective, and the optical component or the objective lens is moved in a direction perpendicular to an optical axis, to thereby realize angle multiplex recording. If an optical information recording medium is inclined, the optical component or the objective lens is moved along the direction along which the optical information recording medium moved to change an angle of the reference beam incident upon the optical information recording medium and compensate for degradation of a reproduction signal.

    摘要翻译： 一种用于通过使用角度复用方法记录全息图的光学拾取器。 通过使用诸如衍射透镜的光学部件，将光束分离成两束，信号光束和具有不同会聚/发散度的参考光束。 信号和参考光束入射到相同的物镜上，并且光学部件或物镜在垂直于光轴的方向上移动，从而实现角度多路复用记录。 如果光学信息记录介质倾斜，则光学部件或物镜沿着光学信息记录介质移动的方向移动以改变入射在光学信息记录介质上的参考光束的角度并补偿光学信息记录介质的劣化 再现信号。

    Optical pickup, optical information recording apparatus and optical information recording and reproducing apparatus using the optical pickup
    9.
    发明授权
    Optical pickup, optical information recording apparatus and optical information recording and reproducing apparatus using the optical pickup 有权
    光学拾取器，光学信息记录装置和使用光学拾取器的光学信息记录和再现装置

    公开(公告)号：US07990830B2

    公开(公告)日：2011-08-02

    申请号：US12038150

    申请日：2008-02-27

    申请人： Kenichi Shimada ,  Tatsuro Ide ,  Kevin R. Curtis ,  Ken E. Anderson

    发明人： Kenichi Shimada ,  Tatsuro Ide ,  Kevin R. Curtis ,  Ken E. Anderson

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0065 ,  G11B7/1356 ,  G11B7/1378

    摘要： In holographic recording, it is important to form stably an interference fringe between a reference beam and a signal beam in a holographic storage medium. To suppress factors degrading stability of the interference fringe, such as fluctuation of atmospheric air, position displacement of optical components and the like during propagation of the reference and signal beams, an optical pickup and an optical information recording/reproducing apparatus adopt an optical system structure providing a higher proportion of optical components shared by the reference and signal beams optical path than conventional optical system structure. To increase the proportion of shared optical components, the signal beam and the reference beam pass through the PBS prism as parallel beams and a concave lens is placed on a reference beam path just before the objective lens.

    摘要翻译： 在全息记录中，重要的是在全息存储介质中稳定地在参考光束和信号光束之间形成干涉条纹。 为了抑制在参考信号和信号光束传播期间降低干扰条纹的稳定性的因素，例如大气的波动，光学部件的位置位移等，光学拾取器和光学信息记录/再现装置采用光学系统结构 提供比传统光学系统结构更高比例的参考和信号光束光路共享的光学部件。 为了增加共享光学部件的比例，信号光束和参考光束通过PBS棱镜作为平行光束，并且将凹透镜放置在恰好在物镜之前的参考光束路径上。