Holographic optical information recording/reproducing device and holographic optical information recording/reproducing method
    1.
    发明授权
    Holographic optical information recording/reproducing device and holographic optical information recording/reproducing method 有权
    全息光学信息记录/再现装置和全息光学信息记录/再现方法

    公开(公告)号:US07859972B2

    公开(公告)日:2010-12-28

    申请号:US11885259

    申请日:2006-03-01

    IPC分类号: G11B7/00

    摘要: A holographic optical information recording/reproducing device is provided with a laser light source 1 and a polarizing beam splitter 8 for splitting a light from the laser light source 1. At the time of recording information, one of light beams split by the polarizing beam splitter 8 is modulated by a spatial light modulating element 2 to form a beam array, which becomes a signal light 25, whereas the other split light beam becomes a reference light 22. Interference fringes generated by the signal light 25 and the reference light 22 are recorded as holograms in a holographic disc 5. At the time of reproducing the information, only the reference light 22 is irradiated to the holographic disc 5 and its diffracted light is detected. At this time, the holographic optical information recording/reproducing device makes the power of the reference light 22 in the holographic disc 5 for information reproduction larger than a sum of the power of the reference light 22 and the power of the signal light 25 in the holographic disc 5 for information recording.

    摘要翻译: 全息光信息记录/再现装置设置有用于分离来自激光光源1的光的激光光源1和偏振光束分离器8.在记录信息时,由偏振分束器 8被空间光调制元件2调制以形成成为信号光25的光束阵列,而另一个分束光束变为参考光22.由信号光25和参考光22产生的干涉条纹被记录 作为全息光盘5中的全息图。在再现信息时,仅将参考光22照射到全息光盘5,并检测其衍射光。 此时,全息光信息记录/再现装置使信息再现的全息光盘5中的参考光22的功率大于参考光22的功率和信号光25的功率之和 全息光盘5用于信息记录。

    Optical storage medium and optical information apparatus
    2.
    发明授权
    Optical storage medium and optical information apparatus 有权
    光存储介质和光信息设备

    公开(公告)号:US07852731B2

    公开(公告)日:2010-12-14

    申请号:US11885416

    申请日:2006-02-22

    IPC分类号: G09B7/00

    摘要: Disclosed is an arrangement that enables to keep a relative positional relation between a beam for servo control and a beam for information recording/reproduction constant concerning focusing control and tracking control, even if the two beams are different from each other. An optical storage medium has a reflection surface for reflecting a first beam having a first wavelength, and reflecting a second beam having a second wavelength different from the first wavelength; and an information storage layer for recording information as an interference pattern by incidence of the first beam, or reproducing the information from a wave surface based on the interference pattern. The reflection surface is formed with plural marks or guide grooves usable in a tracking operation or a focusing operation by irradiation of the second beam. The information storage layer is partially formed, in advance, with a reference interference pattern which is reproduced when the first beam is irradiated, and which is used as a reference for correcting the relative positional relation between the first beam and the second beam.

    摘要翻译: 公开了一种能够保持用于伺服控制的光束和用于关于聚焦控制和跟踪控制的信息记录/再现的光束之间的相对位置关系的布置,即使两个光束彼此不同。 光学存储介质具有用于反射具有第一波长的第一光束的反射表面,并且反射具有不同于第一波长的第二波长的第二光束; 以及信息存储层,用于通过第一光束的入射记录信息作为干涉图案,或者基于干涉图案从波面再现信息。 反射面形成有多个标记或引导槽,可用于通过第二光束照射的跟踪操作或聚焦操作。 信息存储层预先以照射第一光束时再现的参考干涉图案部分地形成,并且用作用于校正第一光束和第二光束之间的相对位置关系的参考。

    OPTICAL STORAGE MEDIUM AND OPTICAL INFORMATION APPARATUS
    3.
    发明申请
    OPTICAL STORAGE MEDIUM AND OPTICAL INFORMATION APPARATUS 有权
    光存储介质和光信息设备

    公开(公告)号:US20090303856A1

    公开(公告)日:2009-12-10

    申请号:US11885416

    申请日:2006-02-22

    IPC分类号: G11B7/00 G11B7/24

    摘要: Disclosed is an arrangement that enables to keep a relative positional relation between a beam for servo control and a beam for information recording/reproduction constant concerning focusing control and tracking control, even if the two beams are different from each other. An optical storage medium has a reflection surface for reflecting a first beam having a first wavelength, and reflecting a second beam having a second wavelength different from the first wavelength; and an information storage layer for recording information as an interference pattern by incidence of the first beam, or reproducing the information from a wave surface based on the interference pattern. The reflection surface is formed with plural marks or guide grooves usable in a tracking operation or a focusing operation by irradiation of the second beam. The information storage layer is partially formed, in advance, with a reference interference pattern which is reproduced when the first beam is irradiated, and which is used as a reference for correcting the relative positional relation between the first beam and the second beam.

    摘要翻译: 公开了一种能够保持用于伺服控制的光束和用于关于聚焦控制和跟踪控制的信息记录/再现的光束之间的相对位置关系的布置,即使两个光束彼此不同。 光学存储介质具有用于反射具有第一波长的第一光束的反射表面,并且反射具有不同于第一波长的第二波长的第二光束; 以及信息存储层,用于通过第一光束的入射记录信息作为干涉图案,或者基于干涉图案从波面再现信息。 反射面形成有多个标记或引导槽,可用于通过第二光束照射的跟踪操作或聚焦操作。 信息存储层预先以照射第一光束时再现的参考干涉图案部分地形成,并且用作用于校正第一光束和第二光束之间的相对位置关系的参考。

    Disc Cartridge and Photon Mode Optical Information Recording/Reproducing Apparatus
    5.
    发明申请
    Disc Cartridge and Photon Mode Optical Information Recording/Reproducing Apparatus 失效
    光盘盒和光子模式光信息记录/再现设备

    公开(公告)号:US20080172687A1

    公开(公告)日:2008-07-17

    申请号:US11885444

    申请日:2006-02-23

    IPC分类号: G11B23/03

    CPC分类号: G11B23/0308

    摘要: It is aimed to make optical characteristics of a photon mode optical information recording medium difficult to easily degrade with a simple construction. A disc cartridge accommodating a photon mode optical information recording medium is provided with a disc case having an opening section, and a shutter movably disposed between a closing position to close the opening section and an opening position to open the opening section. The disc case includes a light path bending portion for bending a clearance between the shutter at the closing position and the disc case at least at two points. Stray lights propagating in the clearance between the disc case and shutter is bent at least at two points.

    摘要翻译: 旨在使光子模式光信息记录介质的光学特性难以用简单的结构降级。 容纳光子模式光信息记录介质的盘盒设置有具有开口部分的盘盒和可动地设置在关闭开关部分的关闭位置和打开开口部分的打开位置之间的挡板。 盘盒包括光路弯曲部分,用于至少在两个点处弯曲关闭位置处的挡板与盘盒之间的间隙。 至少在两点处弯曲在盘盒和快门之间的间隙中传播的杂散光。