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    2.
    发明专利
    未知

    公开(公告)号：DE602007004912D1

    公开(公告)日：2010-04-08

    申请号：DE602007004912

    申请日：2007-09-28

    Applicant: SONY CORP

    Inventor： KATO YOSHIAKI ,  MAEDA FUMISADA

    IPC: G02B3/14 ,  G11B7/135

    Abstract: Disclosed is an electrowetting device. The electrowetting device includes a conductive or polar liquid material, and an electrode applying voltage to the liquid material through a dielectric layer. In the electrowetting device, the dielectric layer is formed as an anodized portion made of a metal oxide formed by anodizing the electrode, and a voltage applying unit applying voltage between the electrode and the liquid material and a polar capacitor are placed between the electrode and the liquid material.

    3.
    发明专利
    未知

    公开(公告)号：DE60217690D1

    公开(公告)日：2007-03-08

    申请号：DE60217690

    申请日：2002-08-29

    Applicant: SONY CORP

    Inventor： MAEDA FUMISADA ,  NAGASHIMA SHINICHI

    IPC: G01B11/26 ,  G02B7/02 ,  G02B7/28 ,  G02B13/00 ,  G02B13/18 ,  G02B25/00 ,  G11B7/08 ,  G11B7/135 ,  G11B7/22

    Abstract: An objective lens unit manufacturing apparatus for manufacturing an objective lens unit, with a numerical aperture not less than 0.7, made up by a plurality of lenses, includes a positioning mechanism (31) for positioning one lens (2) in a cylindrically-shaped lens holder (3) of a synthetic resin material, using another lens (1), already mounted and secured to the lens holder, as a reference, and for securing the one lens to the lens holder, for setting relative positions of the one and the other lenses.

    LENS DRIVING DEVICE, OPTICAL HEAD AND OPTICAL DISC SYSTEM
    6.
    发明专利
    LENS DRIVING DEVICE, OPTICAL HEAD AND OPTICAL DISC SYSTEM 未知

    公开(公告)号：MY120346A

    公开(公告)日：2005-10-31

    申请号：MYPI9804445

    申请日：1998-09-26

    Applicant: SONY CORP

    Inventor： MAEDA FUMISADA ,  ICHIMURA ISAO ,  YAMAMOTO KENJI ,  OHSATO KIYOSHI ,  WATANABE TOSHIO

    IPC: G11B7/00 ,  G11B7/135 ,  G11B7/09 ,  G11B7/125 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/1392

    Abstract: A RECORDING/REPRODUCING APPARATUS FOR AN OPTICAL RECORDING MEDIUM (2) IN WHICH A LASER LIGHT BEAM IS ILLUMINATED ON AN OPTICAL RECORDING MEDIUM (2) USING A DOUBLE-LENS TYPE OBJECTIVE LENS MADE UP OF AT LEAST A FIRST LENS (3) AND A SECOND LENS (4) TO RECORD AND/OR REPRODUCE THE INFORMATION. THE APPARATUS INCLUDES A FIRST LENS (3) FOR CONVERGING THE LASER LIGHT ILLUMINATED FROM A LIGHT SOURCE, A SECOND LENS (4) ARRANGED BETWEEN THE FIRST LENS AND THE OPTICAL RECORDING MEDIUM (2) AND A VOICE COIL MOTOR FOR CAUSING RELATIVE MOVEMENT OF THE FIRST AND SECOND LENSES (3,4) FOR VARYING THE DISTANCE THEREBETWEEN IN THE DIRECTION ALONG THE OPTICAL AXIS. THE FIRST LENS (3) IS MOVED TO VARY THE DISTANCE BETWEEN THE FIRST AND SECOND LENSES. THIS ENLARGES THE NUMERICAL APERTURE AND DIMINISHES THE EFFECT OF ABERRATION TO ENABLE HIGH-DENSITY RECORDING AND/OR REPRODUCTION OF INFORMATION SIGNALS TO A HIGH RECORDING DENSITY. (FIGURE 2)

    7.
    发明专利
    未知

    公开(公告)号：DE69328385T2

    公开(公告)日：2000-10-19

    申请号：DE69328385

    申请日：1993-06-18

    Applicant: SONY CORP

    Inventor： EGUCHI NAOYA ,  MAEDA FUMISADA

    IPC: G11B7/125 ,  G11B7/22 ,  H01S3/02 ,  H01S3/109

    Abstract: An optical pickup apparatus comprises a laser light beam radiating device (10) having a laser medium (16) arranged between a pair of mirror members (13, 14) constituting a resonator, a laser light source (11) for radiating a laser light from an incident side one of said mirror members (13, 14) for exciting said laser medium (16), a non-linear optical crystal element (17) irradiated with a light beam emanated from said laser medium (16), a deflective mirror (19) for deviating the optical axis of the laser light beam from one of said mirror members (13, 14) and a casing (60) having housed therein said mirror members (13, 14), said laser medium (16), said laser light source (11), said non-linear optical crystal element (17) and said deflective mirror (19), said casing also having an optical element (63) exhibiting wavelength selectively mounted obliquely with respect to an optical axis of the laser light beam radiated from one of said mirror members (13, 14). A beam expander (23) is arranged on an optical axis of a light beam radiated from said laser light beam radiating device (10) and deflected by said deflective mirror (19).

    9.
    发明专利
    未知

    公开(公告)号：DE69321065D1

    公开(公告)日：1998-10-22

    申请号：DE69321065

    申请日：1993-06-18

    Applicant: SONY CORP

    Inventor： EGUCHI NAOYA ,  MAEDA FUMISADA

    IPC: G11B7/125 ,  G11B7/22 ,  H01S3/02 ,  H01S3/109 ,  G11B7/08

    Abstract: An optical pickup apparatus comprises a laser light beam radiating device (10) having a laser medium (16) arranged between a pair of mirror members (13, 14) constituting a resonator, a laser light source (11) for radiating a laser light from an incident side one of said mirror members (13, 14) for exciting said laser medium (16), a non-linear optical crystal element (17) irradiated with a light beam emanated from said laser medium (16), a deflective mirror (19) for deviating the optical axis of the laser light beam from one of said mirror members (13, 14) and a casing (60) having housed therein said mirror members (13, 14), said laser medium (16), said laser light source (11), said non-linear optical crystal element (17) and said deflective mirror (19), said casing also having an optical element (63) exhibiting wavelength selectively mounted obliquely with respect to an optical axis of the laser light beam radiated from one of said mirror members (13, 14). A beam expander (23) is arranged on an optical axis of a light beam radiated from said laser light beam radiating device (10) and deflected by said deflective mirror (19).

    Optical pickup device
    10.
    发明专利
    Optical pickup device 未知

    公开(公告)号：SG45208A1

    公开(公告)日：1998-01-16

    申请号：SG1996001303

    申请日：1996-02-12

    Applicant: SONY CORP

    Inventor： MAEDA FUMISADA ,  ICHIMURA ISAO ,  YAMAMOTO KENJI

    IPC: G11B7/12 ,  G11B7/135

    Abstract: An optical pickup device for condensing the light from a light source on a signal recording surface of an optical recording medium, such as an optical disc (20). A semi-spherical lens (9) of the optical pickup device has a surface (9b) facing an optical disc (20) and has a pre-set refractive index. The optical pickup device also has a slider (12) adapted for securing the lens (9) and for being in sliding contact with an optical disc (20), and a spring plate (13) adapted for thrusting and supporting the slider in sliding contact with the optical disc (20). With the optical pickup device, high density reproduction may be realized, while the tolerance value for warping during disc molding or the tolerance value for warping due to moisture absorption may be increased. In addition, the production yield and the degree of freedom in selecting the disc materials may be improved.

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