发明名称 |
IDENTIFICATION CARD COMPRISING INFORMATION IN HOLOGRAPHIC FORM |
摘要 |
1. Identity card comprising information in holographic form, including a substrate (2) as basis of the card, a transparent layer (3) mounted on said substrate constituting a plane optical waveguide, and a further layer (4) mounted on said waveguide, which contains at least one hologram (5), characterized by light coupling means (6) consisting of a further hologram which corresponds to a predetermined, specific light source pattern (31) and by which only a reference light wave corresponding to said specific light source pattern can be coupled into said wave guide. |
申请公布号 |
DE3069558(D1) |
申请公布日期 |
1984.12.06 |
申请号 |
DE19803069558 |
申请日期 |
1980.08.21 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CHEVILLAT, PIERRE;GFELLER, FRITZ |
分类号 |
G02B6/12;B42D15/10;G02B6/34;G03H1/04;G06K1/12;G06K19/16;G07D7/12;G07D7/20;G07F7/08;(IPC1-7):G06K19/08;G03H1/00 |
主分类号 |
G02B6/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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