发明名称 Information carrier for security purposes
摘要 An information carrier for security purposes is specified, which has, in one position, an impressed hologram (4) which is formed from an overlaying of a white-light hologram by a laser transmission hologram. Also specified is a system for reading out the content of an information carrier of this type, in which an optical receiver is arranged in a point in space in front of the information carrier, on which the content stored in the laser transmission hologram is projected by means of illumination with a laser beam. The invention makes possible the machine readability of the content of information carriers for security purposes, such as for example cheques, identity cards or similar. <IMAGE>
申请公布号 DE3840037(A1) 申请公布日期 1990.05.31
申请号 DE19883840037 申请日期 1988.11.24
申请人 HOLOTEC GMBH & CO KG, 2117 KAKENSTORF, DE 发明人 MATTHIESEN, JOHANNES, 2000 HAMBURG, DE
分类号 B42D25/328;G06K19/16 主分类号 B42D25/328
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