Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1985-04-05
1987-02-17
LaRoche, Eugene R.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356240, 235494, G01D 536
Patent
active
046441514
ABSTRACT:
A method and system for identifying a molded container such as a glass bottle with its mold of origin, and a corresponding container. Each container has molded therein a plurality of indicia in the form of surface bumps or protrusions extending in an arcuate array at uniformly spaced indicia positions around the container heel perpendicularly of the container axis. The indicia are grouped in sets of two adjacent indicia positions, the sets being of two mutually unique configurations, whereby the sets as a whole identify a binary code associated with the container mold of origin. The method and system for reading such code in accordance with the disclosure contemplate directing a source of diffused light energy onto the container heel, with such energy having an intensity gradient at predetermined orientation with respect to the container axis. A camera is positioned to receive light energy reflected by the heel and is monitored to read the coded indicia as a function of alternation of the normal reflection pattern by the bumps or protrusions.
REFERENCES:
patent: 4201338 (1980-05-01), Keller
LaRoche Eugene R.
Nelson John R.
Owens--Illinois, Inc.
Pascal Robert J.
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