发明名称 |
REFLECTIVE DIFFRACTIVE AUTHENTICATING DEVICE |
摘要 |
IMPROVED REFLECTIVE DIFFRACTIVE AUTHENTICATING DEVICE A reflective-diffractive coating layer, situated at the interface between a substrate layer and an overcoat layer of the device, is divided into a set of small, slightly separated regions. This allows a direct bond of the overcoat layer to the substrate layer within the separation areas, which direct bond provides a more secure bond than that provided by a bond of the coating layer to the substrate and overcoat layers. |
申请公布号 |
CA1229006(A) |
申请公布日期 |
1987.11.10 |
申请号 |
CA19830435598 |
申请日期 |
1983.08.29 |
申请人 |
RCA CORPORATION |
发明人 |
GALE, MICHAEL T.;KNOP, KARL H.;EBNOETHER, MARTIN |
分类号 |
G06K19/06;B42D15/10;B44F1/12;G03F7/09;G06K19/10;G07F7/08;G09F3/00 |
主分类号 |
G06K19/06 |
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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