AUTHENTICITY FEATURE IN THE FORM OF LUMINESCENT SUBSTANCES

摘要

The invention relates to a security element comprising at least two luminescent substances. The invention is based on a security element comprising at least two luminescent substances, wherein the security element comprises a first and a second luminescent substance, which comprise substantially identical, common emission bands, wherein at least the first or the second luminescent substance comprises, or both luminescent substances comprise, at least one excitation band that only leads to emission with the first or the second luminescent substance at the common emission band.