利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

51 条记录 (耗时 0.03 秒)

    Optical head assembly
    1.
    发明授权
    Optical head assembly 失效
    光头组件

    公开(公告)号：US6151288A

    公开(公告)日：2000-11-21

    申请号：US115212

    申请日：1998-07-14

    申请人： Yuichi Takei ,  Tadashi Takeda ,  Yoshio Hayashi

    发明人： Yuichi Takei ,  Tadashi Takeda ,  Yoshio Hayashi

    IPC分类号： G11B7/12 ,  G11B7/135 ,  G11B7/22

    CPC分类号： G11B7/1353 ,  G11B7/12 ,  G11B7/22

    摘要： An optical head assembly comprises a laser light source, an objective lens for converging a laser light emitted from the laser light source on an optical recording medium, an optical detector for detecting a returning light from the optical recording medium, a diffraction unit mounted in an optical path between the laser light source and objective lens for positioning multiple diffraction grating means, a base of the optical head assembly for supporting the objective lens, the laser light source and the optical detector, and a diffraction grating unit retaining portion formed on the base for holding the diffraction grating unit.

    摘要翻译： 光学头组件包括激光源，用于将从激光源发射的激光会聚在光学记录介质上的物镜，用于检测来自光学记录介质的返回光的光学检测器，安装在 用于定位多个衍射光栅装置的激光源和物镜之间的光路，用于支撑物镜的光学头组件的基座，激光光源和光学检测器以及形成在基底上的衍射光栅单元保持部分 用于保持衍射光栅单元。

    Optical pickup device having a shielding protection
    2.
    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
    3.
    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.

    Optical pickup device
    4.
    发明授权
    Optical pickup device 失效
    光学拾取装置

    公开(公告)号：US06552317B1

    公开(公告)日：2003-04-22

    申请号：US09592812

    申请日：2000-06-13

    申请人： Tadashi Takeda ,  Yuichi Takei ,  Yoshio Hayashi

    发明人： Tadashi Takeda ,  Yuichi Takei ,  Yoshio Hayashi

    IPC分类号： G02B704

    CPC分类号： G11B7/1381 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/1365

    摘要： A phase difference plate (12) converts states of polarization of emergent light form a laser light source (13) and return light form an optical recording medium (5). A diffractive element (21) separates the return light from an optical axis leading from the laser light source (13) to the optical recording medium (5), and guides the return light to a photodetector (14) on the basis of a difference between the states of polarization of the emergent light and the return light. The polarization direction of emergent light from the laser light source (13) is arranged so as to be oriented in the radial direction of the optical recording medium (5) (in the direction of birefringence of the optical recording medium). The azimuth and the amount of phase of the phase difference plate (12) are set so that a peak of a signal in tensity detected by the photodetector (14) appears while an amount of birefringence of the optical recording medium changes from 0 to a quarter wavelength of the laser light when the amount of birefringence of the optical recording medium (5) is changed.

    摘要翻译： 相位差板（12）将形成激光光源（13）的出射光的偏振态转换成光记录介质（5）。 衍射元件（21）将来自激光光源（13）的光轴的返回光分离到光学记录介质（5），并且基于第二光学元件之间的差异将返回光引导到光电检测器（14） 出射光和返回光的极化状态。 来自激光光源（13）的出射光的偏振方向被布置成沿着光学记录介质（5）的径向（沿着光学记录介质的双折射方向）定向。 相位差板（12）的方位角和相位量被设定为使光电检测器（14）检测到的张力信号的峰值出现，同时光记录介质的双折射量从0变化到1/4 当光学记录介质（5）的双折射量改变时，激光的波长。

    Optical unit with shake correcting function
    5.
    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。

    OPTICAL AXIS ADJUSTING DEVICE AND OPTICAL AXIS ADJUSTING METHOD USING THE SAME
    10.
    发明申请
    OPTICAL AXIS ADJUSTING DEVICE AND OPTICAL AXIS ADJUSTING METHOD USING THE SAME 审中-公开
    光轴调整装置和使用其的光轴调整方法

    公开(公告)号：US20080297778A1

    公开(公告)日：2008-12-04

    申请号：US12127346

    申请日：2008-05-27

    申请人： Yuichi Takei ,  Tadashi Takeda ,  Katsuyoshi Miyasaka

    发明人： Yuichi Takei ,  Tadashi Takeda ,  Katsuyoshi Miyasaka

    IPC分类号： G01B11/26

    CPC分类号： G11B7/22 ,  G11B7/1275 ,  G11B2007/0006

    摘要： An optical axis adjusting device for adjusting an optical axis in an optical head device may include a rotatable part which is turnably mounted on a main base so that the optical head device is capable of being turned with an axis X which is set to be at a spot position of one of the return light beams of the two laser beams. The optical axis adjusting device may include a correcting means for converting an optical axis shift on the light receiving face when the other laser beam is emitted to a non-corresponding optical medium, into an optical axis shift on the light receiving face when the other laser beam is emitted to the other corresponding optical medium.

    摘要翻译： 用于调整光学头装置中的光轴的光轴调节装置可以包括可旋转部分，其可转动地安装在主基座上，使得光学头装置能够被设定为处于 两个激光束的返回光束之一的光点位置。 光轴调整装置可以包括校正装置，用于当另一个激光束发射到非对应的光学介质时将光接收面上的光轴偏移转换成光接收面上的光轴移动，当另一个激光 光束被发射到另一个对应的光学介质。