Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology
First Claim
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1. A retroreflective device for electro-optically reading a bar code symbol, comprising:
- a) a linear array of light emitters for emitting light;
b) a scanner for scanning the light across the symbol along a scan direction for reflection from the symbol;
c) a collector for collecting light reflected from the symbol; and
d) a linear array of detectors parallel to the linear array of emitters, for detecting the light collected by the collector over a field of view, and for generating an electrical signal representing the symbol.
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Abstract
A scanning device for reading indicia of differing light reflectivity, including bar code symbols, has two parallel arrays of light emitters, such as lasers or light emitting diodes, for generating a scanning light beam to visually illuminate sequential portions of the indicia. Two parallel arrays of sensors, such as charge coupled or other solid state imaging devices, detect light reflected from portions of the indicia and generate an electrical signal representative of the spatial intensity variations of portions of the indicia. Each array is arranged transversely of the direction along which the symbol is scanned.
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Citations
8 Claims
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1. A retroreflective device for electro-optically reading a bar code symbol, comprising:
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a) a linear array of light emitters for emitting light;
b) a scanner for scanning the light across the symbol along a scan direction for reflection from the symbol;
c) a collector for collecting light reflected from the symbol; and
d) a linear array of detectors parallel to the linear array of emitters, for detecting the light collected by the collector over a field of view, and for generating an electrical signal representing the symbol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification