Imaging bar code reader with moving beam simulation
AssigneeSymbol Technologies, Inc.
InventorsMehul Patel, Walter Preuss, Paul Dvorkis
Life of this patent
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Abstract
The operating environment of a moving laser beam in a flying spot, electro-optical reader is simulated in a solid-state, sensor-based imaging reader by turning a visible line produced by a light emitting diode on and off prior to capturing a two-dimensional image of a target.
Claims20
In a system for electro-optically reading indicia having parts of different light reflectivity by imaging light reflected off the indicia over two mutually orthogonal directions, an arrangement for simulating a scanning laser beam, the arrangement comprising:
- a) a light emitting diode (LED) component for emitting visible light;
- b) an optical component for optically modifying the visible light to form a visible line across the indicia;
- and
- c) means for turning the visible line on and off to simulate the scanning laser beam.
In a method of electro-optically reading indicia having parts of different light reflectivity by imaging light reflected off the indicia over two mutually orthogonal directions, a method of simulating a scanning laser beam, the method comprising the steps of:
- a) emitting visible light from a light emitting diode (LED) component;
- b) optically modifying the visible light to form a visible line across the indicia;
- and
- c) turning the visible line on and off to simulate the scanning laser beam.
Dependencies are inferred from the claim text.