Radiant energy – Photocells; circuits and apparatus – With circuit for evaluating a web – strand – strip – or sheet
Patent
1995-05-11
1997-04-15
Allen, Stephone
Radiant energy
Photocells; circuits and apparatus
With circuit for evaluating a web, strand, strip, or sheet
2502081, 283 83, G01N 2186
Patent
active
056212194
ABSTRACT:
A device for determining from one or more different directions the geometrical pattern of a mark being randomly shaped in three dimensions and being embedded in a transparent material and securely fixed to an object. A radiation source is designed to emit radiation to a matrix of radiation detectors. The object is placed with the mark in the path of the radiation for projecting a silhouette of the mark onto the matrix of radiation detectors by the radiation sources.
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Snijders Bart
Tel Teunis
van Renesse Rudolf L.
Allen Stephone
Bednarek Michael D.
Unicate B.V.
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