Illumination source for optical reading apparatus
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United States of America Patent
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-
N/A
Issued Date -
Jun 27, 2002
app pub date -
Mar 13, 2001
filing date -
Mar 11, 1998
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An optical reading apparatus for scanning and decoding data encoded in any of a plurality of types of 1D and 2D bar code symbology. An array of white light emitting diodes are used as an illumination source for the optical reading apparatus, allowing detection of symbologies from a target of interest regardless of the color of the symbology and/or the background of the target. The white LEDs produce a higher color temperature to allow better discrimination of the colors of the target than other known illumination sources and further produces a substantially continuous spectrum, to replicate that of a conventional white light source.
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