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    Optical device for the recording and reading of data media and optical memory system incorporating such a device
    7.
    发明授权
    Optical device for the recording and reading of data media and optical memory system incorporating such a device 失效
    用于记录和读取包含这种装置的数据媒体和光学存储器系统的光学装置

    公开(公告)号：US4387452A

    公开(公告)日：1983-06-07

    申请号：US226805

    申请日：1981-01-21

    申请人： Claude Bricot ,  Francois Le Carvennec ,  Pierre Lepetit

    发明人： Claude Bricot ,  Francois Le Carvennec ,  Pierre Lepetit

    IPC分类号： G11B7/085 ,  G11B7/08 ,  G11B7/12 ,  G11B7/14

    CPC分类号： G11B7/08 ,  G11B7/124

    摘要： The device makes it possible to optically inscribe and/or read at least two facing sides of disks in an optical memory system, whose disks are stacked. A linear motor displaces a mobile means incorporating recording-reading heads. These heads receive via a bidirectional optical connection data to be inscribed and coming from fixed light emitters-receivers. Each of the recording heads comprises two focusing lenses associated with one of the two facing sides of the disk. According to a first variant, the two sides can be read simultaneously, each of the lenses being associated with its own control device. In a second variant, a single control device is provided and the two focusing lenses are integral with one another, each side being read or inscribed in succession.

    摘要翻译： 该装置使得可以在光盘存储器系统中光盘上刻写和/或读取盘的至少两个相对侧，其中盘被堆叠。 线性电动机移动包括记录读取头的移动装置。 这些磁头通过双向光学连接数据接收来自固定发射器 - 接收器的数据。 每个记录头包括与盘的两个面对侧中的一个相关联的两个聚焦透镜。 根据第一变型，可以同时读取两侧，每个透镜与其自己的控制装置相关联。 在第二种变型中，提供单个控制装置，并且两个聚焦透镜彼此成一体，每一侧被连续读取或内接。

    Process for producing information carrying discs
    8.
    发明授权
    Process for producing information carrying discs 失效
    生产信息携带光盘的过程

    公开(公告)号：US4157931A

    公开(公告)日：1979-06-12

    申请号：US925881

    申请日：1978-07-18

    申请人： Claude Bricot ,  Francois Le Carvennec ,  Gerard Robin

    发明人： Claude Bricot ,  Francois Le Carvennec ,  Gerard Robin

    IPC分类号： B29C43/00 ,  B29C39/00 ,  B29C39/10 ,  B29C39/42 ,  B29C43/02 ,  B29C61/00 ,  B29D17/00 ,  G11B3/70 ,  G11B7/26 ,  B29C13/00 ,  B29C27/00

    CPC分类号： B29C43/02 ,  B29L2017/003

    摘要： The process according to the invention uses a matrix engraved by any means, the tracks being perfectly centered on this matrix in relation to a center of rotation. The matrix is placed in a vacuum chamber on a supporting axis capable of rotating and is coated over its entire surface with a polymerizable material which is free from air bubbles and which does not adhere to the constituent material of the matrix. A substrate previously drilled at its center, balanced and coated with a material to which the polymerizable material adheres, is placed on the supporting shaft and held at a distance from the matrix. The vacuum is established in the chamber and the substrate is brought into contact with the matrix. On completion of polymerization outside or inside the chamber, the substrate carrying the moulded resin is readily separated from the matrix.

    摘要翻译： 根据本发明的方法使用通过任何方式雕刻的矩阵，轨道相对于旋转中心完全居中在该矩阵上。 将基质放置在能够旋转的支撑轴上的真空室中，并且其整个表面上涂覆有不含气泡并且不粘附到基质的构成材料的可聚合材料。 预先在其中心钻出的基板平衡并涂覆有可聚合材料粘附的材料的基板被放置在支撑轴上并且与矩阵保持一定距离。 在室中建立真空并使基板与基体接触。 在室内或室内聚合完成后，承载模塑树脂的基材容易与基质分离。

    Device for detecting focussing error in an optical reader head
    9.
    发明授权
    Device for detecting focussing error in an optical reader head 失效
    用于检测光学读取器头中的聚焦误差的装置

    公开(公告)号：US4025784A

    公开(公告)日：1977-05-24

    申请号：US598164

    申请日：1975-07-22

    申请人： Jean-Claude Lehureau ,  Claude Bricot

    发明人： Jean-Claude Lehureau ,  Claude Bricot

    IPC分类号： G06K7/015 ,  G02B7/28 ,  G02B7/34 ,  G11B7/09 ,  G01J1/20

    CPC分类号： G11B7/0917 ,  G02B7/34 ,  G11B7/0908

    摘要： A device for detecting the error in focussing a read-out beam on the impression. Two photodetector cells located respectively in front of and behind the optical axis of the system, in relation to the direction of transfer, produce two electrical signals the difference between which is the read-out signal, a control signal being obtained by a comparison of the phases of the two signals, one of which is phase-shifted so that the optimum focussing point corresponds to zero phase-shift.

    摘要翻译： 用于检测将读出光束聚焦在印象上的误差的装置。 分别位于系统的光轴前后的两个光电检测器单元相对于传送方向产生两个电信号，其差是读出信号，控制信号是通过比较 两个信号的相位，其中之一是相移，使得最佳聚焦点对应于零相移。

    Optical player with half wave plate
    10.
    发明授权
    Optical player with half wave plate 失效
    具有半波片的光学播放器

    公开(公告)号：US4203133A

    公开(公告)日：1980-05-13

    申请号：US673057

    申请日：1976-04-02

    申请人： Claude Bricot ,  Jean-Claude Lehureau

    发明人： Claude Bricot ,  Jean-Claude Lehureau

    IPC分类号： H04N5/89 ,  G11B7/09 ,  H04N5/76

    CPC分类号： G11B7/0917

    摘要： The present invention relates to the reading out of a track by means of a light spot which scans a track along which the information contained in a record is transcribed. The object of the invention is a read-out system which ensured focussing and tracking by the synchronous detection of positional errors with the help of a read-out beam one of the halves of which is intercepted by a half-wave plate; an oscillatory motion is imparted to the read-out spot in the plane containing the track.

    摘要翻译： 本发明涉及通过扫描记录在记录中的信息的轨迹的光点来读出轨迹。 本发明的目的是一种读出系统，其通过借助于其半部被半波片截取的读出光束，通过同步检测位置误差来确保聚焦和跟踪; 在包含轨道的平面中的读出光点赋予振荡运动。