公开(公告)号：US12128703B2

公开(公告)日：2024-10-29

申请号：US17766669

申请日：2020-10-16

Applicant: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH

Inventor： Stefan Bichlmeier ,  Matthias Pfeiffer ,  Gerhard Hampp

IPC: B42D25/382

CPC classification number: B42D25/382

Abstract: The invention relates to a security element having an optically variable security feature and a machine-readable security feature, which are at least partially arranged one above the other, wherein the security element is transparent or translucent in the region of the visible light and the machine-readable security feature forms a code. The machine-readable security feature is a combination of at least two different substances, a first IR substance and a second IR substance, wherein the first IR substance is arranged in a first areal region of the security element and the second IR substance is arranged in a second areal region of the security element, and wherein the first IR substance absorbs in a first IR wavelength region and the second IR substance absorbs in a second IR wavelength region. The invention also relates to a value document which has such a security element.