公开(公告)号：US20240331480A1

公开(公告)日：2024-10-03

申请号：US18682583

申请日：2022-07-26

申请人： LEUCHTSTOFFWERK BREITUNGEN GMBH ,  SENSOR-INSTRUMENTS ENTWICKLUNGS- UND VERTRIEBS-GMBH

发明人： Benedikt DAUMANN ,  Thomas KAIB ,  Thomas BITZER ,  Dominik UHLICH ,  Walter BRAUMANDL

IPC分类号： G07D7/1205

CPC分类号： G07D7/1205

摘要： A method for determining the authenticity of an object by marking the object with a first luminescent material with a first decay behavior over time, marking the object with a second luminescent material with a second decay behavior that differs from the first decay behavior, excitation of the luminescent materials with a light pulse, measuring the afterglow intensities of both luminescent materials temporally after the excitation with the light pulse, forming a difference signal or identity signal from the afterglow intensities measured over the elapsed time, determining the time of a zero crossing of the difference signal or the time of the identity signal of a comparator, comparing the time determined by the zero crossing or by the identity signal with a setpoint value.

公开(公告)号：US20230401411A1

公开(公告)日：2023-12-14

申请号：US18258250

申请日：2021-11-17

申请人： LEUCHTSTOFFWERK BREITUNGEN GMBH

发明人： Thomas BITZER ,  Benedikt DAUMANN ,  Dominik UHLICH

IPC分类号： G06K19/06 ,  G06K19/08 ,  G06V20/80 ,  B42D25/305 ,  G06K19/14 ,  G06K19/18

CPC分类号： G06K19/06037 ,  G06K19/086 ,  G06V20/80 ,  B42D25/305 ,  G06K19/14 ,  G06K19/18

摘要： A method for uniquely marking an object, wherein a random distribution of individual pigment domains is applied to a surface of the object, and wherein a list of distances of the individual pigment domains from one another is measured and stored in a database. Also a corresponding method for identifying an object by: capturing an image of the pigment domains, identifying the two-dimensional coordinates of each pigment domain captured in the image, determining the two-dimensional distance of each pair of two pigment domains and/or the angle of each triplet of pigment domains, storing the distances and/or angles determined in the step before in a list, storing the list in the database, the list enriched with meta-information about the manufacturing and/or finishing parameters of the object, applying a database identification as an information unit to the surface of the object, the information unit uniquely assignable to the database.