Patent · US Active

Sensor and method for checking authenticity of valuable documents with a luminscent security feature

US9989411B2 · kind B2 · utility

3Cited by

2References

13Claims

0Family size

Assignee

GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

Wolfgang Deckenbach · Schechen, DE
Wolfgang Rauscher · Parkstetten, DE
Peter Kersten · Leonberg, DE

Key dates

Filing date	Dec 18, 2013
Grant date	Jun 5, 2018
Priority date	—
Expiry date	Oct 5, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG07D7/1205
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a method and a sensor for checking a value document which is moved relative to the sensor. The sensor is arranged to detect the luminescence of the value document in two different spectral regions at the same location of detection simultaneously. The two temporal intensity patterns of the first and second luminescences detected in different spectral regions are evaluated relative to each other. This eliminates the motion effects which distort the two intensity patterns in the same or at least very similar manner.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.