Apparatus and method for determining a distance to a target
First Claim
Patent Images
1. 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.
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Accused Products
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.
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Citations
16 Claims
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1. A reader for reading indicia having areas of differing light reflectivity on a target, comprising:
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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.
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2. In a hand held apparatus, a range finder for determining a distance to a target to be imaged, comprising:
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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. - View Dependent Claims (3, 4, 5, 6)
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7. In a hand held apparatus, a range finder for determining a distance to a target, comprising:
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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. - View Dependent Claims (8, 9, 10, 11)
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12. A method of determining a distance to a target, comprising:
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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. - View Dependent Claims (13, 14, 15, 16)
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Specification