BANKNOTE DISCRIMINATION APPARATUS

摘要

A banknote discrimination apparatus includes a plurality of photoelectric conversion elements in which an incident light including fluorescence emitted from a banknote irradiated with excitation light enters; a plurality of organic film filters that are arranged so as to overlap each of the plurality of photoelectric conversion elements, and have mutually different transmission bands; a circuit including a plurality of pixel circuits which are each connected to one corresponding element among the plurality of photoelectric conversion elements and output a pixel signal converted by each photoelectric conversion element in accordance with an intensity of the incident light that transmits through the organic film filter and enters to the photoelectric conversion element; a spectral processor; and a discriminator. At least one of the plurality of organic film filters is a filter obtained by overlapping two or more filter layers on each other.

主权项

1. A banknote discrimination apparatus comprising:
a plurality of photoelectric conversion elements in which an incident light including fluorescence emitted from a banknote irradiated with excitation light enters; a plurality of organic film filters that are arranged so as to overlap each of the plurality of photoelectric conversion elements, and have mutually different transmission bands; a circuit including a plurality of pixel circuits which are respectively connected to one corresponding element among the plurality of photoelectric conversion elements and output a pixel signal converted by each photoelectric conversion element in accordance with an intensity of the incident light that transmits through the organic film filter and enters to the photoelectric conversion element; a spectral processor which outputs incident light intensities of light that has narrower wavelength bands than a wavelength bands of lights that transmit through the organic film filters based on the plurality of pixel signals output by the plurality of pixel circuits; and a discriminator which compares an output pattern output from the spectral processor with a prerecorded signal pattern of a genuine note in order to discriminate between whether or not a banknote is genuine, wherein at least one of the plurality of organic fihn filters is a filter obtained by stacking two or more filter layers.