Registers – Coded record sensors – Particular sensor structure
Patent
1997-09-17
2000-02-15
Hajec, Donald
Registers
Coded record sensors
Particular sensor structure
23546241, G06K 710
Patent
active
060242833
ABSTRACT:
A bar code reader for reading a symbol located at a distance from the laser comprises an array of groups of reading elements and an array of selectable liquid crystal elements. Each of the groups of reading elements have an associated predetermined operating focal distance. At least one liquid crystal element corresponds to each group of reading elements. In the bar code reader, a device activates a selected liquid crystal element to transmit light to a selected group of reading elements. In this way, the reading elements can operate at a predetermined, fixed operating focal distance.
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Campanelli Joseph
Dvorkis Paul
McGlynn Daniel R.
Metlitsky Boris
Hajec Donald
Symbol Technologies Inc.
Tremblay Mark
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