| 摘要 |
<p>The invention concerns a structure arrangement comprising a plurality o f surface regions having a relief structure which has an optical-diffraction effect, in particular for visually identifiable, optical security elements for value-bearing documents, for example bank notes, credit cards, passes or cheque documents, or other items to be safeguarded. In order to modulate the brightness of a surface region without having to provide relief structures which differ from each other, it is proposed that the structure arrangement has surface regions which have at least two sub-regions with identical relief structures which are displaced relative to each other by a fraction of the grating period.</p> |
