DEVICE FOR AUTOMATED VERIFICATION OF AUTHENTICITY OF BANKNOTES, SECURITIES AND DOCUMENTS Russian patent published in 2012 - IPC B41M5/00 G07D7/06 G06K7/12 

FIELD: instrument making.

SUBSTANCE: device for automated verification of authenticity of banknotes, securities and documents containing an authenticity mark in the form of diamond nanocrystals with NV-centres, including a source of optical radiation with a wave length in the range of 500-600 nm,a source of electromagnet microwave radiation, and a photodetector that records radiation in the range of 650-750 nm. The device additionally comprises a source of optical radiation with a wave length in the range of 500-600 nm. One of the specified sources of optical radiation is designed for the first probing of the specified mark jointly with the specified source of the electromagnetic microwave radiation. The other of the specified sources of optical radiation - for the second probing of the specified mark in absence of the microwave radiation. The device additionally comprises another photodetector device so that one of the specified photodetector devices is designed to record mark fluorescence during its first specified probing, and the other from the specified photodetector devices - to record fluorescence of the mark during its second specified probing. The device additionally comprises optical systems to direct the specified optical radiation with the wave length in the range of 500-600 nm in the points of the first and second specified probing in the place on the inspected object corresponding to location of the authenticity mark.

EFFECT: proposed device ensures higher quality of automated authenticity verification.

10 cl, 2 dwg, 1ex