发明名称 |
Optisches Sicherheitselement und System zur Visualisierung von versteckten Informationen |
摘要 |
The invention concerns an optical security element and a system for visualising items of concealed information comprising such an optical security element. The optical security element has a substrate layer in which a relief structure defined by relief parameters, in particular relief shape, relief depth, spatial frequency and azimuth angle, is shaped in the surface region defined by an X-axis and a Y-axis, for producing an optically perceptible effect. One or more of the relief parameters defining the relief structure are varied in the surface region in accordance with a parameter variation function. The surface region is divided into one or more pattern regions and a background region. One or more of the relief parameters defining the relief structure are varied in the one or more pattern regions in accordance with a parameter variation function which is phase-displaced in relation to the parameter variation function of the background region. There is further provided a verification element which has a verification grating which is defined by a periodic transmission function and whose period corresponds to the period of the parameter variation function. |
申请公布号 |
DE10328759(B4) |
申请公布日期 |
2006.11.30 |
申请号 |
DE2003128759 |
申请日期 |
2003.06.25 |
申请人 |
OVD KINEGRAM AG |
发明人 |
TOMPKIN, ROBERT WAYNE;STAUB, RENE;SCHILLING, ANDREAS |
分类号 |
G02B27/44;B42D15/00;B42D15/10;B44F1/12;G02B;G02B5/18;G06K19/06 |
主分类号 |
G02B27/44 |
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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