发明名称 |
OPTISCH VARIABLES ELEMENT |
摘要 |
The present invention relates to an optically variable element having surface portions with achromatic surface structures and different scatter, diffraction and reflection characteristics. The achromatic surface structures are combined with a thin-film structure, whereby upon turning or tilting the optically variable element, it is not the impression of a continuous color transition, but a defined, almost discrete color change that is produced for the viewer. |
申请公布号 |
AT408522(T) |
申请公布日期 |
2008.10.15 |
申请号 |
AT20030737876T |
申请日期 |
2003.05.09 |
申请人 |
LEONHARD KURZ STIFTUNG & CO. KG |
发明人 |
SCHILLING, ANDREAS;TOMPKIN, WAYNE;STAUB, RENE |
分类号 |
B42D25/21;B41M3/14;G02B5/02;G02B5/08;G02B5/18;G07D7/12;G07D7/20 |
主分类号 |
B42D25/21 |
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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