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    Optical pickup device having a shielding protection
    1.
    发明授权
    Optical pickup device having a shielding protection 失效
    具有屏蔽保护的光学拾取装置

    公开(公告)号：US06445671B1

    公开(公告)日：2002-09-03

    申请号：US09343267

    申请日：1999-06-30

    申请人： Tadashi Takeda ,  Hisahiro Ishihara ,  Yoshio Hayashi ,  Taminori Masuzawa ,  Yuichi Takei

    发明人： Tadashi Takeda ,  Hisahiro Ishihara ,  Yoshio Hayashi ,  Taminori Masuzawa ,  Yuichi Takei

    IPC分类号： G11B7125

    CPC分类号： G11B7/123 ,  G11B7/22

    摘要： An optical pickup device includes a semiconductor laser for emitting forward and backward laser light from front and back emergent end faces thereof, focusing device for focusing the forward laser light emergent from the front emergent end face of said semiconductor laser onto an optical recording medium, a light-receiving element for signal reproduction for detecting return light from the optical recording medium, and a light-guiding system for guiding the return light to said light-receiving element for signal reproduction, said optical pickup device being provided with a light source unit having an arrangement in which said semiconductor laser and said light-receiving element for signal reproduction being incorporated in a common package and shielding device, disposed inside said package of said light source unit, for preventing the light emitted from said semiconductor laser from being incident upon said light-receiving element for signal reproduction.

    摘要翻译： 光拾取装置包括：半导体激光器，用于从前后出射端面发射前后激光;聚焦装置，用于将从所述半导体激光器的前端面出射的正向激光聚焦到光记录介质上;聚焦装置， 用于信号再现的光接收元件，用于检测来自光记录介质的返回光;以及光引导系统，用于将返回光引导到所述光接收元件进行信号再现，所述光学拾取装置设置有光源单元，该光源单元具有 其中所述半导体激光器和用于信号再现的所述光接收元件被结合在设置在所述光源单元的所述封装内的公共封装和屏蔽装置中，用于防止从所述半导体激光器发射的光入射到所述光源单元 用于信号再现的光接收元件。

    Optical pickup device
    2.
    发明授权
    Optical pickup device 失效

    公开(公告)号：US06577564B2

    公开(公告)日：2003-06-10

    申请号：US10194301

    申请日：2002-07-15

    申请人： Tadashi Takeda ,  Hisahiro Ishihara ,  Yoshio Hayashi ,  Taminori Masuzawa ,  Yuichi Takei

    发明人： Tadashi Takeda ,  Hisahiro Ishihara ,  Yoshio Hayashi ,  Taminori Masuzawa ,  Yuichi Takei

    IPC分类号： G11B7125

    CPC分类号： G11B7/123 ,  G11B7/22

    摘要： An optical pickup device includes a semiconductor laser for emitting forward and backward laser light from front and back emergent end faces thereof, focusing device for focusing the forward laser light emergent from the front emergent end face of said semiconductor laser onto an optical recording medium, a light-receiving element for signal reproduction for detecting return light from the optical recording medium, and a light-guiding system for guiding the return light to said light-receiving element for signal reproduction, said optical pickup device being provided with a light source unit having an arrangement in which said semiconductor laser and said light-receiving element for signal reproduction being incorporated in a common package and shielding device, disposed inside said package of said light source unit, for preventing the light emitted from said semiconductor laser from being incident upon said light-receiving element for signal reproduction.

    Light-pick-up device and light source unit incorporated in the same
    3.
    发明授权
    Light-pick-up device and light source unit incorporated in the same 失效
    拾光装置和光源装置组合在一起

    公开(公告)号：US06438075B1

    公开(公告)日：2002-08-20

    申请号：US09449905

    申请日：1999-12-02

    申请人： Tadashi Takeda ,  Yoshio Hayashi ,  Taminori Masuzawa

    发明人： Tadashi Takeda ,  Yoshio Hayashi ,  Taminori Masuzawa

    IPC分类号： G11B700

    CPC分类号： G11B7/131 ,  G11B7/005 ,  G11B7/0903 ,  G11B7/0943 ,  G11B7/123 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/22

    摘要： A returning light beam from an optical disc is divided by a separating diffractor in the directions perpendicular to a track direction of the optical recording medium, and according to respective illuminances of the divided light beams, a deviation amount of an objective lens to an optical axis is detected. By feedback-controlling an objective lens driver by using the information of the detected deviation amount, the objective lens can be made to become stationary at the desired position in a short time. Accordingly, a time period required for the oscillation attenuation of the objective lens can be shortened, thereby, a time period for the reproduction can be shortened.

    摘要翻译： 来自光盘的返回光束在垂直于光记录介质的轨道方向的方向上由分离衍射器分开，并且根据分开的光束的各个照度，物镜与光轴的偏差量 被检测到。 通过使用检测到的偏差量的信息反馈控制物镜驱动器，可以使物镜在短时间内在期望的位置处变得静止。 因此，可以缩短物镜的振荡衰减所需的时间，从而可以缩短再现时间。

    Optical unit with shake correcting function
    7.
    发明授权
    Optical unit with shake correcting function 有权
    具有抖动校正功能的光学单元

    公开(公告)号：US08279289B2

    公开(公告)日：2012-10-02

    申请号：US12579136

    申请日：2009-10-14

    申请人： Akihiro Nagata ,  Toshiyuki Karasawa ,  Yuichi Takei ,  Tadashi Takeda ,  Hisahiro Ishihara ,  Shinji Minamisawa ,  Katsushige Yanagisawa ,  Kiyoshi Miyazaki

    发明人： Akihiro Nagata ,  Toshiyuki Karasawa ,  Yuichi Takei ,  Tadashi Takeda ,  Hisahiro Ishihara ,  Shinji Minamisawa ,  Katsushige Yanagisawa ,  Kiyoshi Miyazaki

    IPC分类号： H04N5/228 ,  G02B27/64

    CPC分类号： H04N5/2254 ,  G02B27/646 ,  H04N5/2257 ,  H04N5/23248 ,  H04N5/23287

    摘要： An optical unit with shake correcting function may include a movable module having a lens, a fixed body supporting the movable module, a shake detection sensor for detecting shake of the movable module, and at least one pair of magnetic drive mechanism for shake correction which is structured on both sides of the movable module so that the movable module is swung with respect to the fixed body on the basis of detection result of the shake detection sensor to correct the shake of the movable module. The magnetic drive mechanism for shake correction is disposed so that a shake correction magnet is held by the fixed body and a shake correction coil is held by the movable module. Further, a shake correction coil may be disposed in a first region, where magnetic lines of force generated by a shake correction magnet are directed in directions generally going away from a supporting point part and/or a second region where magnetic lines of force generated by the shake correction magnet are directed in directions generally going toward the supporting point part.

    摘要翻译： 具有抖动校正功能的光学单元可以包括具有透镜的可移动模块，支撑可移动模块的固定体，用于检测可动模块的抖动的抖动检测传感器，以及用于抖动校正的至少一对磁驱动机构， 结构在可动模块的两侧，使得可移动模块基于抖动检测传感器的检测结果相对于固定体摆动，以校正可移动模块的抖动。 用于抖动校正的磁驱动机构被布置成使得振动校正磁体被固定体保持，并且抖动校正线圈由可移动模块保持。 此外，抖动校正线圈可以设置在第一区域中，其中由振动校正磁体产生的磁力线通常沿着远离支撑点部分的方向指向，和/或第二区域，其中由 振动校正磁体沿着通常朝向支撑点部分的方向指向。