Coin discriminator using a plurality of optical fiber groups

Details Coin discriminator using a plurality of optical fiber groups Coin discriminator using a plurality of optical fiber groups

1993-12-01

1994-09-13

Huppert, Michael S.

Check-actuated control mechanisms

Including means to test validity of check

Having means to test surface configuration

25022711, 250228, G07D 500

Patent

active

053460499

ABSTRACT:
A coin discriminating apparatus including a light source for irradiating the surface of a coin to be discriminated with light normal thereto, a plurality of optical fiber groups each including a plurality of optical fibers for guiding light reflected by the surface of the coin to be discriminated, each of the optical fibers disposed so that an imaginary extension of the center axis thereof passes through the center of the surface of the coin to be discriminated at a predetermined angle, the predetermined angle being different between different optical fiber groups, a plurality of photoelectric converters each facing an end portion of an associated one of the optical fiber groups further from the end portion facing the coin to be discriminated and being adapted for receiving the reflected light guided by the associated optical fiber group and converting it to an electrical signal proportional to the amount of the received light, and a discriminator for discriminating coins based upon the electrical signals generated by the plurality of photoelectric converters. The thus constituted apparatus can, with a simple structure, discriminate the denominations, genuineness and the like of coins by detecting coin surface unevenness.

REFERENCES:
patent: 1897219 (1933-02-01), Schroter
patent: 3458261 (1969-07-01), Bentley et al.
patent: 3978962 (1976-09-01), Gregory, Jr.
patent: 4333557 (1982-06-01), Kozak
patent: 4542817 (1985-09-01), Paulson
patent: 4703187 (1987-10-01), Hofling et al
patent: 5236074 (1993-08-01), Gotaas

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