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    Integrated optical component, optical pickup, and optical disc device
    2.
    发明授权
    Integrated optical component, optical pickup, and optical disc device 有权
    集成光学部件，光学拾取器和光盘装置

    公开(公告)号：US06529454B1

    公开(公告)日：2003-03-04

    申请号：US09508169

    申请日：2000-03-08

    申请人： Yoshito Asoma ,  Kiyoshi Toyota ,  Noriaki Nishi

    发明人： Yoshito Asoma ,  Kiyoshi Toyota ,  Noriaki Nishi

    IPC分类号： G11B700

    CPC分类号： G11B7/1356 ,  G11B7/00 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1378

    摘要： A cylindrical lens 39 for generating focussing error signals is formed as one with a portion of an optical component 33 of a transparent material lying on an optical path L2 that is an optical path of a return light beam from the optical member 33. This configuration assures a small size while reducing the production cost and improving operational reliability.

    摘要翻译： 用于产生聚焦误差信号的柱面透镜39形成为具有位于作为来自光学构件33的返回光束的光路的光路L2上的透明材料的光学部件33的一部分的柱面透镜39.这种构造确保 体积小，同时降低生产成本，提高运行可靠性。

    Phase changing apparatus and optical pickup apparatus for magneto-optic storage device using same
    3.
    发明授权
    Phase changing apparatus and optical pickup apparatus for magneto-optic storage device using same 失效
    用于使用其的磁光存储装置的相变装置和光拾取装置

    公开(公告)号：US5577018A

    公开(公告)日：1996-11-19

    申请号：US122411

    申请日：1993-09-21

    申请人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

    发明人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

    IPC分类号： G02B5/04 ,  G02B5/30 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B11/10

    CPC分类号： G11B7/131 ,  G02B5/04 ,  G02B5/3083 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1367

    摘要： In an optical pickup apparatus, including a laser source (11) arranged along an optical axis (0-0'), a polarization beam splitter (14) and an objective lens (13), wherein light emitted from the laser source (11) is emitted on a recording plane (1a) of an optical-magnetical recording media (1) as a converged beam, light beams reflected from the recording media (1a) of the optical-magnetical recording media (1) are separated by said polarization beam splitter (14) to obtain a predetermined polarized light component, a phase change means, which changes a phase of light passing through one side of said optical axis (0-0') and a phase of light passing through another side of said optical axis (0-0') by a predetermined angle, such as 1/2 wavelength plate (15), a phase retardation type prism (39) and a combination optical rotation plate (52), is provided between the polarization beam splitter (14) and the objective lens (13), and, an optical detection element, which detects the light polarized by the polarization beam splitter (14), is provided at a side intersecting the phase change means of the polarization beam splitter (14).

    摘要翻译： PCT No.PCT / JP93 / 00158 Sec。 371日期：1993年9月21日 102（e）日期1993年9月21日PCT提交1993年2月8日PCT公布。 公开号WO93 / 16469 日期：1993年8月19日在包括沿着光轴（0-0'）配置的激光源（11），偏振分束器（14）和物镜（13）的光拾取装置中， 激光源（11）作为会聚光束在光磁记录介质（1）的记录平面（1a）上发射，从光磁记录介质（1）的记录介质（1a）反射的光束是 由所述偏振分束器（14）分离以获得预定的偏振光分量;相位改变装置，其改变通过所述光轴（0-0'）的一侧的光的相位和通过另一个的光的相位 所述光轴（0-0'）的一侧具有预定角度，例如+ E，fra 1/2 + EE波片（15），相位延迟型棱镜（39）和组合旋转板（52） 设置在偏振光束分离器（14）和物镜（13）之间，以及光学检测元件 h检测由偏振分束器（14）偏振的光，设置在与偏振分束器（14）的相变装置相交的一侧。

    Prism has a plurality of reflective regions each with a predetermined phase difference
    4.
    发明授权
    Prism has a plurality of reflective regions each with a predetermined phase difference 失效
    棱镜具有多个具有预定相位差的反射区域

    公开(公告)号：US5742577A

    公开(公告)日：1998-04-21

    申请号：US685474

    申请日：1996-07-24

    申请人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

    发明人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

    IPC分类号： G02B5/04 ,  G02B5/30 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B11/10 ,  G11B7/00

    CPC分类号： G11B7/131 ,  G02B5/04 ,  G02B5/3083 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1367

    摘要： In an optical pickup apparatus, including a laser source arranged along an optical axis, a polarization beam splitter and an objective lens, wherein light emitted from the laser source is emitted on a recording plane of an optical-magnetical recording media as a converged beam, light beams reflected from the recording media of the optical-magnetical recording media are separated by said polarization beam splitter to obtain a predetermined polarized light component, a phase change means, which changes a phase of light passing through one side of said optical axis and a phase of light passing through another side of said optical axis by a predetermined angle, such as 1/2 wavelength plate, a phase retardation type prism and a combination optical rotation plate, is provided between the polarization beam splitter and the objective lens, and, an optical detection element, which detects the light polarized by the polarization beam splitter, is provided at a side intersecting the phase change means of the polarization beam splitter.

    摘要翻译： 在包括沿着光轴布置的激光源的光学拾取装置中，偏振分束器和物镜，其中从激光源发射的光作为会聚光束发射在光磁记录介质的记录平面上， 从光磁记录介质的记录介质反射的光束被所述偏振分束器分离以获得预定的偏振光分量，相变装置改变通过所述光轴的一侧的光的相位和 在偏振光束分离器和偏振光分束器之间设置有通过光轴另一侧预定角度的光，例如+ E，fra 1/2 + EE波片，相位延迟型棱镜和组合旋转板 物镜和检测由偏振分束器偏振的光的光学检测元件设置在与pha相交的一侧 偏振分束器的改变装置。

    Prism has a plurality of reflective regions each with a predetermined phase difference
    5.
    发明授权
    Prism has a plurality of reflective regions each with a predetermined phase difference 失效
    棱镜具有多个具有预定相位差的反射区域

    公开(公告)号：US5563869A

    公开(公告)日：1996-10-08

    申请号：US394270

    申请日：1995-02-24

    申请人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

    发明人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

    IPC分类号： G02B5/04 ,  G02B5/30 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

    CPC分类号： G11B7/131 ,  G02B5/04 ,  G02B5/3083 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1367

    摘要： In an optical pickup apparatus, including a laser source arranged along an optical axis, a polarization beam splitter and an objective lens, wherein light emitted from the laser source is emitted on a recording plane of an optical-magnetical recording media as a converged beam, light beams reflected from the recording media of the optical-magnetical recording media are separated by said polarization beam splitter to obtain a predetermined polarized light component, a phase change means, which changes a phase of light passing through one side of said optical axis and a phase of light passing through another side of said optical axis by a predetermined angle, such as wavelength plate, a phase retardation type prism and a combination optical rotation plate, is provided between the polarization beam splitter and the objective lens, and, an optical detection element, which detects the light polarized by the polarization beam splitter, is provided at a side intersecting the phase change means of the polarization beam splitter.

    摘要翻译： 在包括沿着光轴布置的激光源的光学拾取装置中，偏振分束器和物镜，其中从激光源发射的光作为会聚光束发射在光磁记录介质的记录平面上， 从光磁记录介质的记录介质反射的光束被所述偏振分束器分离以获得预定的偏振光分量，相变装置改变通过所述光轴的一侧的光的相位和 在偏振光束分离器和物镜之间设置有通过光轴另一侧预定角度的光的相位，例如波长板，相位延迟型棱镜和组合光旋转板，并且光学检测 检测由偏振分束器偏振的光的元件设置在与相变平均值相交的一侧 s的偏振分束器。

    Optical pickup device, optical disk drive, optical device and composite optical element
    7.
    发明授权
    Optical pickup device, optical disk drive, optical device and composite optical element 失效
    光学拾取装置，光盘驱动器，光学装置和复合光学元件

    公开(公告)号：US07345982B2

    公开(公告)日：2008-03-18

    申请号：US10494304

    申请日：2002-11-19

    申请人： Norio Fukasawa ,  Junichi Suzuki ,  Kiyoshi Toyota ,  Tetsu Tanaka ,  Satoru Ishii ,  Takeshi Kubo ,  Masahiro Saito

    发明人： Norio Fukasawa ,  Junichi Suzuki ,  Kiyoshi Toyota ,  Tetsu Tanaka ,  Satoru Ishii ,  Takeshi Kubo ,  Masahiro Saito

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/0909 ,  G11B7/0916 ,  G11B7/1381

    摘要： An optical pickup device is provided which includes a double-wavelength objective lens (34) that collects a light beam selectively emitted from a light-emitting/-detecting element (31) that selectively emits a plurality of light beams different in wavelength from each other, and also return light from an optical disk (2), a first diffraction grating (45) that splits the light beam emitted from a light-emitting/-detecting element (31) into three beams including a zero-order light beam and positive and negative first-order light beams, a second diffraction grating (46) that diffracts the return light for traveling along a light path separate from that of the outgoing light, and a third diffraction grating (47) that corrects a light-path deviation by diffracting the positive first-order light beam diffracted by the second diffraction grating (46). The light-emitting/-detecting element (31) provides a focusing error signal FE by detecting the negative first-order light beam diffracted by the third diffraction element (47), and a tracking error signal by detecting return portions of the positive and negative first-order light beams from the first diffraction grating (45).

    摘要翻译： 提供了一种光拾取装置，其包括聚焦从选择性地发射彼此波长不同的多个光束的发光/检测元件（31）选择性发射的光束的双波长物镜（34） 并且还从光盘（2）返回光，将从发光/检测元件（31）发射的光束分割成包括零级光束和正的光束的三束光的第一衍射光栅（45） 和负的一级光束，衍射沿着与输出光分离的光路行进的返回光的第二衍射光栅（46），以及通过以下方式校正光路偏差的第三衍射光栅（47） 衍射由第二衍射光栅（46）衍射的正一级光束。 发光/检测元件（31）通过检测由第三衍射元件（47）衍射的负一级光束来提供聚焦误差信号FE，以及通过检测正和负的返回部分的跟踪误差信号 来自第一衍射光栅（45）的一阶光束。

    Optical pickup device, optical disk drive, optical device and composite optical element
    8.
    发明申请
    Optical pickup device, optical disk drive, optical device and composite optical element 失效
    光学拾取装置，光盘驱动器，光学装置和复合光学元件

    公开(公告)号：US20050162995A1

    公开(公告)日：2005-07-28

    申请号：US10494304

    申请日：2002-11-19

    申请人： Norio Fukasawa ,  Junichi Suzuki ,  Kiyoshi Toyota ,  Tetsu Tanaka ,  Satoru Ishii ,  Takeshi Kubo ,  Masahiro Saito

    发明人： Norio Fukasawa ,  Junichi Suzuki ,  Kiyoshi Toyota ,  Tetsu Tanaka ,  Satoru Ishii ,  Takeshi Kubo ,  Masahiro Saito

    IPC分类号： G11B7/09 ,  G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/0909 ,  G11B7/0916 ,  G11B7/1381

    摘要： An optical pickup device is provided which includes a double-wavelength objective lens (34) that collects a light beam selectively emitted from a light-emitting/-detecting element (31) that selectively emits a plurality of light beams different in wavelength from each other, and also return light from an optical disk (2), a first diffraction grating (45) that splits the light beam emitted from a light-emitting/-detecting element (31) into three beams including a zero-order light beam and positive and negative first-order light beams, a second diffraction grating (46) that diffracts the return light for traveling along a light path separate from that of the outgoing light, and a third diffraction grating (47) that corrects a light-path deviation by diffracting the positive first-order light beam diffracted by the second diffraction grating (46). The light-emitting/-detecting element (31) provides a focusing error signal FE by detecting the negative first-order light beam diffracted by the third diffraction element (47), and a tracking error signal by detecting return portions of the positive and negative first-order light beams from the first diffraction grating (45).

    摘要翻译： 提供了一种光拾取装置，其包括聚焦从选择性地发射彼此波长不同的多个光束的发光/检测元件（31）选择性发射的光束的双波长物镜（34） 并且还从光盘（2）返回光，将从发光/检测元件（31）发射的光束分割成包括零级光束和正的光束的三束光的第一衍射光栅（45） 和负的一级光束，衍射沿着与输出光分离的光路行进的返回光的第二衍射光栅（46），以及通过以下方式校正光路偏差的第三衍射光栅（47） 衍射由第二衍射光栅（46）衍射的正一级光束。 发光/检测元件（31）通过检测由第三衍射元件（47）衍射的负一级光束来提供聚焦误差信号FE，以及通过检测正和负的返回部分的跟踪误差信号 来自第一衍射光栅（45）的一阶光束。