SICHERHEITSSTRUKTUR MIT EINEM DIFFRAKTIVEN OPTISCHEN ELEMENT

摘要

The present invention relates to a security structure (1) comprising: at least one non-opaque microzone (30), having a section no larger than 1,000,000 µm²; at least one diffractive optical element (40) generating at least one interference pattern (66) in a view plane (62) separated from the diffractive optical element (40), at least partially vertically adjacent to the non-opaque microzone (30).