Security Document
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United States of America Patent
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N/A
Issued Date -
Oct 23, 2008
app pub date -
Jun 9, 2006
filing date -
Jun 14, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Described is a security document with a transparent security element (12) which is arranged in a window or in a transparent region of the security document and has a structure layer, in which a first region (12f) of the structure layer has an asymmetrical diffractive relief structure, wherein the first region (12f) has an optical effect which is unexpectedly different in a front view and in a rear view of the security document.
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