Structure arrangement having an optical-diffraction effect
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United States of America Patent
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Mar 2, 2004
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N/A
app pub date -
Jan 27, 1997
filing date -
Jul 2, 1994
priority date (Note) -
Expired
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Abstract
In order to improve a structure arrangement comprising a plurality of portions having a relief structure with an optical-diffraction effect, in particular for visually identifiable optical security elements for value-bearing documents, for example banknotes, credit cards, passes or cheque documents, or other articles to be safeguarded, in such a way that it can give a viewer an image impression which in particular is more homogenous and more brilliant than is possible with known structure arrangements, it is proposed that a predominant number of the portions is of strip or band configuration.
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