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公开(公告)号:EP4108736A1
公开(公告)日:2022-12-28
申请号:EP22180046.9
申请日:2022-06-21
发明人: HOWARD, Ian , LI, Kai , NGEI, Katumo , RICHARDS, Bryce , TURSHATOV, Andrey , BUSKO, Dmitry
IPC分类号: C09K11/77
摘要: The present invention relates to a system, method and computer-program for evaluating the photoluminescence of a photonic marker as well as to a photonic marker for security marking and to the use of the photonic marker for security marking. The photonic marker according to an aspect of the present invention comprises a host material selected from the group consisting of CaS and Ba y Sr 1-y S where 0 ≤ y ≤ 1, wherein the host material is doped with Eu 2+ .