Fiber optic bar code reader

Details Fiber optic bar code reader Fiber optic bar code reader

1980-02-20

1981-08-25

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235462, 235473, G06K 710, G06K 714

Patent

active

042861454

ABSTRACT:
A fiber optic bar code reader utilizing a light source coupled to one port of a three-port directional coupler. A light detector is coupled to a second port of the coupler, a single fiber probe for receiving and transmitting light is coupled to the third port of the coupler. The coupler joins the three fibers so that light is initially transmitted from the light source to the probe fiber, exits the probe fiber, is selectively reflected by the bar code, and finally is transmitted through the directional coupler to the light detector.

REFERENCES:
patent: 3576430 (1971-04-01), Fickenscher
patent: 3584789 (1971-06-01), Kessler
patent: 3610891 (1971-10-01), Raciazek
patent: 3671722 (1972-06-01), Christie
patent: 3763352 (1973-10-01), Del Rio
patent: 3766364 (1973-10-01), Krecioch
patent: 3814933 (1974-06-01), Weber
patent: 3937558 (1976-10-01), Mukai
patent: 3987278 (1976-10-01), Van Elzakker

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