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2. 发明公开

KR1020080039241A 광학 데이터 캐리어 상에 보안 표시를 생성하기 위한 방법 有权
标题翻译：在光数据载体上生成安全标记的方法
公开(公告)号：KR1020080039241A
公开(公告)日：2008-05-07
申请号：KR1020070107105
申请日：2007-10-24
申请人： 톰슨 라이센싱
发明人： 크니텔,죠아킴 , 리히터,하트무트,디알.
IPC分类号： G11B20/10 , G11B20/00 , G11B7/0065 , G06K19/14
CPC分类号： G11B7/00736 , G11B7/0053 , G11B7/0065 , G11B7/24088 , G11B7/26 , G11B20/00086 , G11B20/00884 , G11B23/0035 , G11B23/281
摘要： A method for creating a security mark on an optical data carrier is provided to reduce manufacturing cost of each data carrier by dividing the laser beam emitted from a light source into first and second light beams and tilting a second direction of the second laser beam to the first laser beam direction. A method for generating a security mark on an optical data carrier(1) comprises the steps of: directing first and second light beams(7,6) on a hologram area(10) of the optical data carrier, wherein the first and second light beams are coherent light beams, the first light beam being directed onto the hologram area in a first direction, and the second light beam being directed onto the hologram area in a second direction; and generating the security mark through interference of the first and second light beams. The second direction is tilted by a predefined tilt angle with respect to the first direction. A single light source(3) is used to generate the light beams. A beam divider(5) divides beam emitted from the light source into the first and second light beams.
摘要翻译：提供了一种在光学数据载体上创建安全标记的方法，以通过将从光源发射的激光束分成第一和第二光束并将第二激光束的第二方向倾斜到第二激光束，从而降低每个数据载体的制造成本第一激光束方向。一种用于在光学数据载体（1）上产生安全标记的方法包括以下步骤：将第一和第二光束（7,6）引导到光学数据载体的全息图区域（10）上，其中第一和第二光光束是相干光束，第一光束沿第一方向被引导到全息图区域上，并且第二光束沿第二方向被引导到全息图区域上; 以及通过第一和第二光束的干涉产生安全标记。第二方向相对于第一方向倾斜预定倾斜角。单个光源（3）用于产生光束。光束分离器（5）将从光源发射的光束分成第一和第二光束。

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