Security element, and value document comprising such a security element

Abstract

The invention relates to a security element for a security paper, value document or the like, comprising a support having a motif region (3), which provides a visually perceptible motif having a first and a second motif part (4, 5), wherein the motif region (3) comprises a first micro-optical representation arrangement (11), (e.g. microlenses (10) and microstructures (9), forming a moire magnification arrangement; a partially demetallized perforated screen (31); or a diffractive structure), which presents at least two different images as the first motif part in a manner dependent on the viewing angle, and a second micro-optical representation arrangement (17) (e.g. a plurality of reflecting facets (or embossed structures such as reflective fresnel structures, diffraction structures, or mat structures) which can also be partially demetallized), which presents a reflective surface as the second motif part (5), said reflective surface appearing curved relative to the actual macroscopic spatial form of the second micro-optical representation arrangement (17). Special effects appear in transmitted light.

Description

technical field [0001] The invention relates to a security element for security paper, value documents, etc., and a value document with such a security element. Background technique [0002] Objects to be protected are often provided with security elements which allow the authenticity of the object to be checked and at the same time serve to prevent unauthorized copying. [0003] Objects to be protected are, for example, security papers, identity documents and value documents (e.g. banknotes, chip cards, passports, identification cards, identity cards, share certificates, exhibits, deeds, receipts, checks, admission tickets, credit cards, health cards, etc.) and Product authentication elements (e.g. labels, seals, packaging, etc.). [0004] Known security elements have a micro-optical representation arrangement in the form of a moiré magnification arrangement, e.g. impression. At the same time, such a security element is difficult to imitate, since the micro-optical struc...

AI Technical Summary

Problems solved by technology

At the same time, such security elements are difficult to imitate, because the micro-optical structure is difficult to imitate or reproduce

However, since known security elements are constantly being forged by counterfeiters, there is a need for security elements with increased forgery resistance

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