DEVICE FOR VERIFICATION OF BANKNOTES Russian patent published in 2010 - IPC G07D7/00 

FIELD: information technologies.

SUBSTANCE: device comprises radiators, at least of one wave length, receivers of this radiation arranged at the opposite side of a banknote. Between radiators and the verified banknote there is a light guide arranged, providing for passage of radiation from radiators to surface of banknote and arranged in the form of tetrahedral prism with the basis in the form of trapezoid. Light guide faces radiators with one of parallel side faces, which is the inlet one for radiation, and with its opposite outlet face it faces banknote surface, all other faces are light-reflecting. Radiators are arranged along inlet face symmetrically relative to its middle line with identical pitch between them and coverage of outlet surface sections exposed to light by neighbouring radiators, besides the first and the last ones are installed from the edge at the distance equal to half of this pitch.

EFFECT: invention provides for even exposure of investigated banknote to light.

17 cl, 4 dwg