Optical encoding utilizing selectively refracted light

Details Optical encoding utilizing selectively refracted light Optical encoding utilizing selectively refracted light

1991-11-08

1994-10-25

Weinhardt, Robert A.

Registers

Coded record sensors

Particular sensor structure

235494, G06K 710

Patent

active

053591844

ABSTRACT:
Optical encoding of a cuvette or other object is provided by means of multiple facets molded integrally into flanges or other portions of the object, which facets selectively refract light passing therethrough in accordance with a predetermined code. The detector for the coded light includes a separate detector for each code state of the facets, with the detector having a different output when no facets are between a light source and the detectors. The facets are preferably bevels, which are selectively angled in accordance with the code.

REFERENCES:
patent: 4201338 (1980-05-01), Keller
patent: 4211918 (1980-07-01), Nyfeler et al.
patent: 4266122 (1981-05-01), Schmidhauser
patent: 4371498 (1983-02-01), Scordato et al.
patent: 4376887 (1983-03-01), Greenaway et al.
patent: 4625101 (1986-11-01), Hinks et al.
patent: 4906829 (1990-03-01), Iseli

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