Compact apparatus for reading from and/or writing to holographic storage media
    1.
    发明公开
    Compact apparatus for reading from and/or writing to holographic storage media 审中-公开
    Kompakte Vorrichtung zum Lesen von und / oder Schreiben auf holografischen Speichermedien

    公开(公告)号:EP1909267A1

    公开(公告)日:2008-04-09

    申请号:EP06121731.1

    申请日:2006-10-04

    发明人: Knittel, Joachim

    IPC分类号: G11B7/0065 G11B7/135

    CPC分类号: G11B7/0065 G11B7/1369

    摘要: The present invention relates to a compact apparatus for reading from and/or writing to holographic storage media, and to a filter (17) for use in such an apparatus.
    According to the invention, a polarizing filter (17) for a light beam has:
    - a substrate with an outer zone (17a) and an inner zone (17b), the outer zone (17a) and the inner zone (17b) having different optical properties for a first direction of polarization and a second direction of polarization, and
    - a wave plate (17c) attached to the substrate for influencing the polarization of the light beam, wherein a part of the wave plate (17c) corresponding to either the outer zone (17a) or the inner zone (17b) is switchable.

    摘要翻译: 本发明涉及用于从全息存储介质读取和/或写入全息存储介质的紧凑装置,以及用于这种装置中的过滤器(17)。 根据本发明,用于光束的偏振滤光器(17)具有:具有外部区域(17a)和内部区域(17b)的基底,外部区域(17a)和内部区域(17b)具有不同的 用于第一偏振方向和第二偏振方向的光学特性,以及 - 附着到基板上用于影响光束偏振的波片(17c),其中波片(17c)的一部分对应于 外部区域(17a)或内部区域(17b)是可切换的。

    Beam shifting element for an optical storage system
    2.
    发明公开
    Beam shifting element for an optical storage system 审中-公开
    Sperihersystem系统

    公开(公告)号:EP1921616A1

    公开(公告)日:2008-05-14

    申请号:EP06123750.9

    申请日:2006-11-09

    发明人: Knittel, Joachim

    IPC分类号: G11B7/135 G11B7/08

    摘要: The present invention relates to a beam shifting element (9) and to an apparatus for reading from and/or writing to optical storage media (11) using in such a beam shifting element (9). According to the invention, the beam shifting element (9) has at least a first optical element (91, 91', 92") for deflecting an incoming light beam (7, 8) by a first angle (+A) and a second optical element (92, 92', 92") for deflecting the light beam (7, 8) coming from the first optical element (91, 91', 91") by a second angle (-A) opposite to the first angle (+A), wherein the path length of the light beam (7, 8) between the first optical element (91, 91', 91") and the second optical element (92, 92', 92") is adjustable.

    摘要翻译: 本发明涉及一种使用这种光束移动元件(9)的光束移动元件(9)和用于从光存储介质(11)读取和/或写入装置。 根据本发明,光束移动元件(9)至少具有用于将入射光束(7,8)偏转第一角度(+ A)的第一光学元件(91,91',92“),第二光学元件 用于使来自第一光学元件(91,91',91“)的光束(7,8)偏转与第一角度相反的第二角度(-A)的光学元件(92,92',92”) + A),其中第一光学元件(91,91',91“)和第二光学元件(92,92',92”)之间的光束(7,8)的路径长度是可调节的。

    Method for producing a security mark on an optical data carrier
    3.
    发明公开
    Method for producing a security mark on an optical data carrier 审中-公开
    一种用于光学数据载体上产生安全标记方法

    公开(公告)号:EP1918913A1

    公开(公告)日:2008-05-07

    申请号:EP06123229.4

    申请日:2006-10-31

    摘要: The device comprises directing means (8a, 8b, 11) for directing a first and a second light beam (7, 6) onto a hologram area (10) of the optical data carrier (1), wherein the first and second light beams (7, 6) are coherent light beams. The directing means (8a, 8b, 11) are adapted to direct the first light beam (7) onto the hologram area (10) along a first direction, and the second light beam (6) onto the hologram area (10) along a second direction. Tilting means (12) are provided for tilting the second direction by a predefined tilt angle with respect to the first direction.

    摘要翻译: 该装置包括用于引导第一和第二光束(7,6)到光学数据载体(1),worin第一和第二光束的全息区域(10)(引导装置(8A,8B,11) 7,6)是相干光束。 所述引导装置(8A,8B,11)是angepasst以引导所述第一光束(7)到全息区域(10)沿着第一方向,和所述第二光束(6)安装到沿所述全息区域(10) 第二方向。 提供了用于通过预定的倾斜角相对于所述第一方向倾斜的第二方向的倾斜装置(12)。