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111 条记录 (耗时 0.037 秒)

    Optical disc apparatus therefor
    52.
    发明授权
    Optical disc apparatus therefor 有权
    光盘装置

    公开(公告)号：US08179752B2

    公开(公告)日：2012-05-15

    申请号：US12473752

    申请日：2009-05-28

    申请人： Yoshinori Ishikawa ,  Takeshi Shimano ,  Akio Fukushima

    发明人： Yoshinori Ishikawa ,  Takeshi Shimano ,  Akio Fukushima

    IPC分类号： G11B7/00

    CPC分类号： G11B7/13925 ,  G11B7/08511 ,  G11B7/0945 ,  G11B7/24038 ,  G11B2007/0013

    摘要： There is a need to accurately lock focus of a laser beam onto a target data layer of a multilayer optical disc. The above need can be addressed by, for example, performing a focus lock operation after a spherical aberration correction amount is set in such a way as to make smaller the ratio of the focus error signal waveform amplitude at the data layer adjacent to a target data layer through which a laser beam passes earlier than through the target data layer to the focus error signal waveform amplitude at the target data layer than that when the spherical aberration correction amount is set so as to be optimal for the target data layer.

    摘要翻译： 需要将激光束的焦点准确地锁定到多层光盘的目标数据层上。 可以通过例如在设置球面像差校正量之后进行聚焦锁定操作来解决上述需要，以便使得与目标数据相邻的数据层处的聚焦误差信号波形幅度的比例变小 激光束比通过目标数据层更早地传递到目标数据层的聚焦误差信号波形振幅的层，而不是对于目标数据层设置为最佳的球面像差校正量。

    Optical pickup apparatus
    53.
    发明授权
    Optical pickup apparatus 有权
    光拾取装置

    公开(公告)号：US07796488B2

    公开(公告)日：2010-09-14

    申请号：US12051092

    申请日：2008-03-19

    申请人： Shigeharu Kimura ,  Takeshi Shimano

    发明人： Shigeharu Kimura ,  Takeshi Shimano

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1381 ,  G11B7/1362 ,  G11B2007/0013

    摘要： An optical pickup apparatus aiming at reduction of adverse effect on a tracking control signal and a data signal by preventing the reflected light from the adjacent layers of a multilayer disc changing to a stray light. In this optical pickup apparatus, the reflected light from the optical disc including the stray light from the adjacent layer is once focused with a focusing lens and is then reflected with the reflection plate. A flat attenuation element is provided between the lens and the reflection plate parallel to the optical axis with inclusion of the optical axis under the condition separated from the reflection plate. The reflection plate reflects the reflected light from the relevant layer and the attenuation element shields the reflected light from the adjacent layer. The light returning to the focusing lens includes less influence of the stray light. This light is detected with a detector to become a control signal and a data signal.

    摘要翻译： 一种光学拾取装置，旨在通过防止来自多层盘的相邻层的反射光变成杂散光来减少对跟踪控制信号和数据信号的不利影响。 在该光学拾取装置中，来自包括来自相邻层的杂散光的光盘的反射光一度被聚焦透镜聚焦，然后与反射板反射。 在与反射板分离的条件下包括光轴，在透镜和平行于光轴的反射板之间设置平坦的衰减元件。 反射板反射来自相关层的反射光，并且衰减元件屏蔽来自相邻层的反射光。 返回到聚焦透镜的光包括杂散光的影响较小。 用检测器检测该光以成为控制信号和数据信号。

    Optical disk apparatus
    55.
    发明授权
    Optical disk apparatus 失效
    光盘装置

    公开(公告)号：US07596061B2

    公开(公告)日：2009-09-29

    申请号：US11363956

    申请日：2006-03-01

    申请人： Hiromi Kudo ,  Takahiro Kurokawa ,  Takeshi Shimano ,  Harukazu Miyamoto

    发明人： Hiromi Kudo ,  Takahiro Kurokawa ,  Takeshi Shimano ,  Harukazu Miyamoto

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0943 ,  G11B7/1369

    摘要： An optical disk apparatus for correcting astigmatism that influences the read/write. If there is astigmatism, and auto-focus and tracking control are in operation, then a push-pull signal amplitude and a 2T signal amplitude vary with the variation of an amount of spherical aberration, resulting in two cases. In one case, the amount of spherical aberration to give the maximum value of push-pull signal amplitude agrees with the amount of spherical aberration to give the maximum value of 2T signal amplitude, and in the other case the two amounts do not agree. If there is no astigmatism, two amounts agree each other. If there in no agreement, then correction is made by using an astigmatism correcting element until the agreement is reached between the two. In the case where two amounts agree, specification is made for the existence and angle of astigmatism, and correction is made by using focus error signals from adjacent tracks.

    摘要翻译： 一种用于校正影响读/写的散光的光盘装置。 如果存在散光，并且自动对焦和跟踪控制正在运行，则推挽信号幅度和2T信号幅度随球面像差量的变化而变化，导致两种情况。 在一种情况下，给出推挽信号幅度的最大值的球面像差的量与给出2T信号幅度的最大值的球面像差量一致，而在另一种情况下，两种量不一致。 如果没有散光，两个数量彼此相符。 如果没有达成协议，则在使用散光矫正元件之前进行校正，直到两者达成一致。 在两个数量一致的情况下，对散光的存在和角度进行规定，并且通过使用来自相邻轨道的聚焦误差信号进行校正。

    OPTICAL PICKUP APPARATUS
    56.
    发明申请
    OPTICAL PICKUP APPARATUS 有权

    公开(公告)号：US20090016180A1

    公开(公告)日：2009-01-15

    申请号：US12051092

    申请日：2008-03-19

    申请人： Shigeharu KIMURA ,  Takeshi Shimano

    发明人： Shigeharu KIMURA ,  Takeshi Shimano

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1381 ,  G11B7/1362 ,  G11B2007/0013

    摘要： An optical pickup apparatus aiming at reduction of adverse effect on a tracking control signal and a data signal by preventing the reflected light from the adjacent layers of a multilayer disc changing to a stray light. In this optical pickup apparatus, the reflected light from the optical disc including the stray light from the adjacent layer is once focused with a focusing lens and is then reflected with the reflection plate. A flat attenuation element is provided between the lens and the reflection plate parallel to the optical axis with inclusion of the optical axis under the condition separated from the reflection plate. The reflection plate reflects the reflected light from the relevant layer and the attenuation element shields the reflected light from the adjacent layer. The light returning to the focusing lens includes less influence of the stray light. This light is detected with a detector to become a control signal and a data signal.

    摘要翻译： 一种光学拾取装置，旨在通过防止来自多层盘的相邻层的反射光变成杂散光来减少对跟踪控制信号和数据信号的不利影响。 在该光学拾取装置中，来自包括来自相邻层的杂散光的光盘的反射光一度被聚焦透镜聚焦，然后与反射板反射。 在与反射板分离的条件下包括光轴，在透镜和平行于光轴的反射板之间设置平坦的衰减元件。 反射板反射来自相关层的反射光，并且衰减元件屏蔽来自相邻层的反射光。 返回到聚焦透镜的光包括杂散光的影响较小。 用检测器检测该光以成为控制信号和数据信号。

    Process of microlens mold
    58.
    发明申请
    Process of microlens mold 审中-公开
    微透镜模具的工艺

    公开(公告)号：US20070102842A1

    公开(公告)日：2007-05-10

    申请号：US11528517

    申请日：2006-09-28

    申请人： Irizo Naniwa ,  Masatoshi Kanamaru ,  Takeshi Shimano ,  Shigeo Nakamura ,  Masaya Horino ,  Yumiko Anzai

    发明人： Irizo Naniwa ,  Masatoshi Kanamaru ,  Takeshi Shimano ,  Shigeo Nakamura ,  Masaya Horino ,  Yumiko Anzai

    IPC分类号： B29C33/40

    CPC分类号： B29C33/3842 ,  B29D11/00365 ,  B29L2011/0016

    摘要： The present invention provides a method of making a mold for manufacturing a microlens having a smooth surface and an arbitrary aspherical surface, or more specifically, an aspheric microlens of dimensions such that an aperture is equal to or less than 1 mm and a thickness is equal to or more than 0.5 mm. A mask layer having plural circular apertures with different sizes formed therein for a mold for one lens is formed on a silicon substrate. Plural holes are formed for the lens in the silicon substrate by applying anisotropic dry etching to a surface to be processed, which is the surface having the mask layer formed thereon. The depths of the respective holes vary depending on the sizes of the circular apertures. Isotropic etching is performed to remove sidewalls of the plural holes with different depths formed in the silicon substrate, thereby merging the holes into one hole corresponding to the lens.

    摘要翻译： 本发明提供一种制造用于制造具有平滑表面和任意非球面的微透镜的模具的方法，或者更具体地说，是使得孔径等于或小于1mm并且厚度相等的尺寸的非球面微透镜 至或大于0.5mm。 在硅基板上形成具有用于一个透镜的模具形成有多个具有不同尺寸的圆形孔的掩模层。 通过对作为其上形成有掩模层的表面的待加工表面施加各向异性干蚀刻，在硅衬底中形成多个孔。 各个孔的深度根据圆形孔的尺寸而变化。 进行各向同性蚀刻以去除在硅衬底中形成的不同深度的多个孔的侧壁，从而将孔合并成与透镜相对应的一个孔。

    Optical reproducing apparatus
    59.
    发明授权
    Optical reproducing apparatus 有权
    光学再现装置

    公开(公告)号：US07215609B2

    公开(公告)日：2007-05-08

    申请号：US10231001

    申请日：2002-08-30

    申请人： Takeshi Shimano ,  Hirofumi Sukeda

    发明人： Takeshi Shimano ,  Hirofumi Sukeda

    IPC分类号： G11B7/09

    CPC分类号： G11B7/1374 ,  G11B7/005 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/123 ,  G11B7/1263 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B19/12 ,  G11B2007/0006

    摘要： An optical reproducing apparatus that uses a hologram laser module and is applicable to a DVD Multi drive, wherein five sub spots of light in total that are most suitable to perform the differential push-pull tracking both for DVD-RAM and for DVD-R/RW are irradiated on the disk, respectively, and influence of several sub spots that are unnecessary in recording and reproducing a disk is canceled out by calculation, to realize an optical head that is compatible with the DVD Multi drive using a hologram laser module, and thereby providing a small-size, high-performance optical reproducing apparatus.

    摘要翻译： 一种使用全息激光模块并适用于DVD多驱动器的光学再现装置，其中总共最适合于执行DVD-RAM和DVD-R / DVD的差分推挽跟踪的五个子光点， RW分别照射在盘上，并且通过计算来抵消在记录和再现盘中不必要的几个子点的影响，以实现与使用全息激光模块的DVD多驱动器兼容的光学头，以及 从而提供小尺寸的高性能光学再现装置。