Security feature based on luminescence emitting materials, value and security document with such a security feature, a method and an apparatus for verification of such a security feature

摘要

Security feature based on luminescence emitting substances, wherein the luminescence comprises a first and a second luminescence, wherein the first luminescence spectrally broadband and the second luminescence is spectrally narrowband, both the first and the second luminescence each have at least one band and the at least a band of the first luminescence is superimposed with the at least one band of the second luminescence, the second luminescence having a spectral characteristic which is given by the nature and composition of the at least one second luminescent substance, wherein the nature and / or composition of the at least at least one information is assigned to a substance emitting the second luminescence, the spectral half-width of the at least one band of the second luminescence being at least a factor of 10 smaller than the spectral half-width of the at least one band of the first lumine Furthermore, the luminescence lifetime of the first luminescence is at least a factor of 2 smaller than the luminescence lifetime of the second luminescence and wherein the visual color impression of the security feature upon excitation of the at least one emitting substance for luminescence and the total intensity of the luminescence determined by the spectrally broadband first luminescence become.