发明授权
- 专利标题： AUFBAU EINES BEUGUNGSOPTISCH WIRKSAMEN SICHERHEITSELEMENTS UND VORRICHTUNG ZUR PRÜFUNG DERARTIGER ELEMENTE
- 专利标题（英）： Structure of a security element with optical diffraction effect, and device for checking such elements
- 专利标题（中）： 建立有效的光学衍射安全元件和装置测试这些元素的
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申请号： EP98932022.1申请日： 1998-04-24
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公开(公告)号： EP1004097B1公开(公告)日： 2002-01-16
- 发明人: PUTTKAMMER, Frank , WOLF, Torsten
- 申请人： WHD elektronische Prüftechnik GmbH
- 申请人地址： Industriestrasse 19 01129 Dresden DE
- 专利权人： WHD elektronische Prüftechnik GmbH
- 当前专利权人： WHD elektronische Prüftechnik GmbH
- 当前专利权人地址： Industriestrasse 19 01129 Dresden DE
- 代理机构： Heitsch, Wolfgang
- 优先权： DE19734855 19970812
- 国际公布： WO9909527 19990225
- 主分类号： G07D1/00
- IPC分类号： G07D1/00
摘要：
The invention concerns the constitution of security elements with optical diffraction effect, and a device for controlling such elements. The use of holograms and other security elements with optical diffraction effect for protecting documents and other valuable papers, as well as bank notes against forgery is becoming more and more frequent presently. The element with optical diffraction effect comprises a discontinuous metal coating and/or partial metal coats and/or metal coat zones in different planes, representing an electric data coding, corresponding to the objective. The device comprises a scanner with capacitive functioning. Said scanner consists of a plurality of emitting electrodes placed side by side and a receiving electrode extending parallel to said emitting electrodes arrangement.
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