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    13.
    发明专利
    未知

    公开(公告)号：DE69609878D1

    公开(公告)日：2000-09-28

    申请号：DE69609878

    申请日：1996-02-28

    Applicant: SONY CORP

    Inventor： KUBO TAKESHI

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

    Abstract: An optical pickup (1) used in an optical recording and reproduction apparatus, wherein a wiring board (2) formed with a wiring pattern has electrically connected to it a light receiving and emitting unit (3) provided with a light emitting unit (10, 11) and an optical signal detection unit (13). At the same time, an object lens driving means (6) 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 thickness of the optical pickup can be achieved.

    14.
    发明专利
    未知

    公开(公告)号：DE60214336T8

    公开(公告)日：2007-12-13

    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).

    15.
    发明专利
    未知

    公开(公告)号：DE60214336D1

    公开(公告)日：2006-10-12

    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).

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