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US 6,123,264 AGranted
Apparatus and method for determining a distance to a target
AssigneeSymbol Technologies, Inc.
InventorsYajun Li, Joseph Katz, Jerome Swartz, Daniel McGlynn, Edward Barkan
Life of this patent
Estimating the term…
Abstract
A range finder for use with a bar code scanner. An image of a scan line is detected by a sensor array. Distance from the scanner to the bar code symbol is determined from the length of the detected scan line image.
Claims16
A reader for reading indicia having areas of differing light reflectivity on a target, comprising:
- a light source for producing an outgoing light beam;
- a detector for detecting light reflected from the target;
- and
- a target distance sensor for establishing the target distance by ascertaining the position of an image of the light reflected from the target on the detector.
1 more element
In a hand held apparatus, a range finder for determining a distance to a target to be imaged, comprising:
- a light source for producing light which scans the target;
- target distance sensor for imaging light reflected from the target and for computing a distance to the target by ascertaining a length of the reflected light image.
In a hand held apparatus, a range finder for determining a distance to a target, comprising:
- a light source for producing light;
- a scanner for scanning the light across the target;
- a distance sensor for determining the distance to the target based on an image of the scanned light reflected from the target.
A method of determining a distance to a target, comprising:
- scanning a light beam across the target;
- determining a distance to the target based on an image of the scanned light beam reflected from the target.
Dependencies are inferred from the claim text.