OPTICAL RECORDING DISC
    1.
    发明专利

    公开(公告)号:CA1276722C

    公开(公告)日:1990-11-20

    申请号:CA529674

    申请日:1987-02-13

    Applicant: SONY CORP

    Abstract: An optical recording disc in which a disc substrate made of a synthetic resin having a light transmittance and a hub made of a synthetic resin, fixed to a center part of the disc substrate by means of a predetermined technique such as a supersonic wave expansion molding and on which a circular magnetic metal plate is installed by means of an insert molding and so on are provided and a circular groove which is continuous at an outer peripheral side of a fixing part between the disc substrate and hub is furthermore installed on at least either of the disc substrate or hub. The groove is provided for absorbing a stress generated due to a difference in thermal expansion rates between the disc substrate made of the synthetic resin and magnetic metal plate.

    INFORMATION RECORDING MEDIA
    2.
    发明专利

    公开(公告)号:GB2131594B

    公开(公告)日:1986-06-11

    申请号:GB8330110

    申请日:1983-11-11

    Applicant: SONY CORP

    Abstract: An information recording medium which includes a light-transmitting substrate, a recording layer formed on the substrate, the recording layer having the characteristic of changing an optical characteristic upon heating thereof, together with a protective layer having light-absorbing properties disposed over the recording layer and arranged to absorb light passing through the recording layer upon recording, in combination with a planar layer superimposed on the protective layer and capable of suppressing mechanical deformation of the recording layer.

    3.
    发明专利
    未知

    公开(公告)号:DE69024690D1

    公开(公告)日:1996-02-22

    申请号:DE69024690

    申请日:1990-03-28

    Applicant: SONY CORP

    Abstract: A laser beam deflection apparatus comprises a polygonal mirror (10) having a plurality of reflection surfaces (11), a laser beam incident on the reflection surfaces (11), and n reflection devices (2, 22) positioned in facing relation to the polygonal mirror (10), and aligned in a rotational direction of the polygonal mirror (1) for reflecting the laser beam reflected from one of the reflection surfaces (11) back towards the reflection surfaces (11), whereby the laser beam is twice reflected by the reflection surfaces (11) and is deflected through a predetermined angle n times during each predetermined increment of rotation of the plurality of reflection surfaces (11) of the polygonal mirror (10).

    INFORMATION RECORDING MEDIA
    4.
    发明专利

    公开(公告)号:GB2131594A

    公开(公告)日:1984-06-20

    申请号:GB8330110

    申请日:1983-11-11

    Applicant: SONY CORP

    Abstract: An information recording medium which includes a light-transmitting substrate, a recording layer formed on the substrate, the recording layer having the characteristic of changing an optical characteristic upon heating thereof, together with a protective layer having light-absorbing properties disposed over the recording layer and arranged to absorb light passing through the recording layer upon recording, in combination with a planar layer superimposed on the protective layer and capable of suppressing mechanical deformation of the recording layer.

    5.
    发明专利
    未知

    公开(公告)号:DE69024690T2

    公开(公告)日:1996-06-05

    申请号:DE69024690

    申请日:1990-03-28

    Applicant: SONY CORP

    Abstract: A laser beam deflection apparatus comprises a polygonal mirror (10) having a plurality of reflection surfaces (11), a laser beam incident on the reflection surfaces (11), and n reflection devices (2, 22) positioned in facing relation to the polygonal mirror (10), and aligned in a rotational direction of the polygonal mirror (1) for reflecting the laser beam reflected from one of the reflection surfaces (11) back towards the reflection surfaces (11), whereby the laser beam is twice reflected by the reflection surfaces (11) and is deflected through a predetermined angle n times during each predetermined increment of rotation of the plurality of reflection surfaces (11) of the polygonal mirror (10).

    INFORMATION RECORDING MEDIUM
    6.
    发明专利

    公开(公告)号:CA1214934A

    公开(公告)日:1986-12-09

    申请号:CA440731

    申请日:1983-11-08

    Applicant: SONY CORP

    Abstract: An information recording medium which includes light-transmitting substrate, a recording layer formed on the substrate, the recording layer having the characteristic of changing an optical characteristic upon heating thereof, together with a protective layer having light-absorbing properties disposed over the recording layer and arranged to absorb light passing through the recording layer upon recording, in combination with a planar layer superimposed on the protective layer and capable of suppressing mechanical deformation of the recording layer.

    8.
    发明专利
    未知

    公开(公告)号:DE69025522T2

    公开(公告)日:1996-07-18

    申请号:DE69025522

    申请日:1990-09-13

    Applicant: SONY CORP

    Abstract: A laser scanning apparatus raster scans an input laser beam ( 0) by using an acousto-optic deflector arrangement. The laser beam is horizontally scanned by a pair of acousto-optic deflectors (13a, 13b). Thus, a laser scanning apparatus can be realised which is low in noise, of excellent durability, small in size, light in weight and which can display a picture of high quality at high speed.

    DISPLAY APPARATUS
    9.
    发明专利

    公开(公告)号:CA2005952A1

    公开(公告)日:1990-06-21

    申请号:CA2005952

    申请日:1989-12-19

    Applicant: SONY CORP

    Abstract: An image display apparatus having light beam sources for generating light beams, an optical modulator for modulating the light beams by image signals to be projected, a deflection device for deflecting the modulated light beams, the deflection device including a polygon mirror and an auxiliary reflection mirror provided near the polygon mirror for reflecting the modulated light beams from the polygon mirror toward the polygon mirror, a device for supplying the modulated light beams to the polygon mirror with predetermined angles relative to a rotational plane of the polygon mirror, thereby the modulated light beams incident upon the polygon mirror being reflected a plurality of times by the polygon mirror, and a projection device for projecting the modulated and deflected light beams from the deflection device on a screen or the like.

    10.
    发明专利
    未知

    公开(公告)号:FR2536197A1

    公开(公告)日:1984-05-18

    申请号:FR8318095

    申请日:1983-11-15

    Applicant: SONY CORP

    Abstract: An information recording medium which includes a light-transmitting substrate, a recording layer formed on the substrate, the recording layer having the characteristic of changing an optical characteristic upon heating thereof, together with a protective layer having light-absorbing properties disposed over the recording layer and arranged to absorb light passing through the recording layer upon recording, in combination with a planar layer superimposed on the protective layer and capable of suppressing mechanical deformation of the recording layer.

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