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    OPTICAL PICKUP AND OPTICAL DISC DRIVE
    1.
    发明公开
    OPTICAL PICKUP AND OPTICAL DISC DRIVE 有权
    OPTISCHER ABNEHMER UND OPTISCHES PLATTENLAUF-WERK

    公开(公告)号：EP1351227A4

    公开(公告)日：2005-02-09

    申请号：EP02729580

    申请日：2002-01-15

    Applicant: SONY CORP

    Inventor： FUKASAWA NORIO ,  SUZUKI JUNICHI ,  TANAKA TETSU ,  KUBO TAKESHI

    IPC: G02B5/18 ,  G02B6/34 ,  G11B7/09 ,  G11B7/135

    CPC classification number: G11B7/0912 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1381

    Abstract: This invention is an optical pickup device having a composite optical element (32) which has a first diffraction grating (45) for splitting a light beam emitted from a light source (31) into zeroth-order light, plus-first-order light and minus-first-order light, a second diffraction grating (46) for diffracting the optical path of a return light beam from an optical disc (2), and a split prism (47) arranged at a position where the minus-first-order light diffracted by the second diffraction grating (46) is incident and adapted for splitting the minus-first-order light into a plurality of light beams. It also has a light receiving unit (35) for acquiring a focusing error signal FE by receiving each return light beam split by the split prism (47) and for acquiring a tracking error signal by receiving return light beams from the optical disc (2) of the plus-first-order light and the minus-first-order light split by the first diffraction grating (45).

    Abstract translation: 本发明是一种具有复合光学元件（32）的光学拾取装置，该复合光学元件具有第一衍射光栅（45），用于将从光源（31）发射的光束分解为零级光，一级光，以及 负一级光，用于衍射来自光盘（2）的返回光束的光路的第二衍射光栅（46）和布置在负一级光的位置处的分割棱镜（47） 被第二衍射光栅（46）衍射的光入射并适于将负一级光分解成多个光束。 它还具有一个光接收单元（35），用于通过接收由分裂棱镜（47）分离的每个返回光束并通过接收来自光盘（2）的返回光束来获取跟踪误差信号来获取聚焦误差信号FE， 的第一衍射光栅（45）分开的正一级光和负一级光。

    4.
    发明专利
    未知

    公开(公告)号：DE60214336T2

    公开(公告)日：2007-08-30

    申请号：DE60214336

    申请日：2002-01-15

    Applicant: SONY CORP

    Inventor： FUKASAWA NORIO ,  SUZUKI JUNICHI ,  TANAKA TETSU ,  KUBO TAKESHI

    IPC: G11B7/09 ,  G02B5/18 ,  G02B6/34 ,  G11B7/135 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1381

    Abstract: This invention is an optical pickup device having a composite optical element (32) which has a first diffraction grating (45) for splitting a light beam emitted from a light source (31) into zeroth-order light, plus-first-order light and minus-first-order light, a second diffraction grating (46) for diffracting the optical path of a return light beam from an optical disc (2), and a split prism (47) arranged at a position where the minus-first-order light diffracted by the second diffraction grating (46) is incident and adapted for splitting the minus-first-order light into a plurality of light beams. It also has a light receiving unit (35) for acquiring a focusing error signal FE by receiving each return light beam split by the split prism (47) and for acquiring a tracking error signal by receiving return light beams from the optical disc (2) of the plus-first-order light and the minus-first-order light split by the first diffraction grating (45).

    DISK DEVICE.
    8.
    发明专利
    DISK DEVICE. 未知

    公开(公告)号：MY126283A

    公开(公告)日：2006-09-29

    申请号：MYPI9302728

    申请日：1993-12-16

    Applicant: SONY CORP

    Inventor： KUBO TAKESHI ,  ENOMOTO KENJI

    IPC: G11B5/54

    Abstract: A DISK DEVICE FOR MOVING AN ARM (2) WHICH SUPPORTS A HEAD SLIDER (12) AND FOR POSITIONING THE HEAD SLIDER (12) AT A PREDETERMINED POSITION OF A DISK (400, INCLUDES A SUSPENSION (8) FIXED AT ONE END TO THE ARM (2); A FLEXURE (10) WHICH IS PROVIDED IN THE VICINITY OF THE OTHER END OF THE SUSPENSION (8) AND ON WHICH THE HEAD SLIDER (12) IS MOUNTED; A SPHERICAL PROJECTION (16) PROVIDED TO PROJECT TOWARD THE DISK (40) AT THE END BEYOND THE FLEXURE MOUNT POSITION OF THE SUSPENSION (8); A SLANT BASE (20) PROVIDED WITH A SLANT SURFACE HAVING AN INCREASING DISTANCE FROM THE DISK (40) IN ACCORDANCE WITH A RADIAL OUTWARD DISTANCE OF THE DISK (40); AND A DRIVE SOURCE (36) FOR MOVING THE ARM (2) SO THAT THE PROJECTION (16) IS MOVED IN ENGAGEMENT WITH THE SLANT SURFACE (24) IN LOADING AND UNLOADING. (FIG. 1)

    OPTICAL PICKUP AND OPTICAL RECORDING AND REPRODUCTION APPARATUS
    10.
    发明专利
    OPTICAL PICKUP AND OPTICAL RECORDING AND REPRODUCTION APPARATUS 未知

    公开(公告)号：MY119250A

    公开(公告)日：2005-04-30

    申请号：MYPI9600719

    申请日：1996-02-28

    Applicant: SONY CORP

    Inventor： KUBO TAKESHI

    IPC: G02B7/02 ,  G11B7/09 ,  G11B7/12 ,  G11B7/22

    Abstract: AN OPTICAL PICKUP USED IN AN OPTICAL RECORDING AND REPRODUCTION APPARATUS, WHEREIN A WIRING BOARD FORMED WITH THE WIRING PATTERN HAS ELECTRICALLY CONNECTED TO IT A LIGHT RECEIVING AND EMITTING UNIT PROVIDED WITH A LIGHT EMITTING UNIT AND AN OPTICAL SIGNAL DETECTION UNIT. AT THE SAME TIME, AN OBJECT LENS DRIVING MEANS IS ARRANGED ON THE WIRING BOARD. DUE TO THIS CONFIGURATION, THE ELECTRIC CONNECTION MEMBERS CAN BE REDUCED AND A REDUCTION OF SIZE AND A REDUCTION OF THE THICKNESS OF THE OPTICAL PICKUP CAN BE ACHIEVED.

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