Method and apparatus for utilizing specular light to image low contrast symbols
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United States of America Patent
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Apr 9, 2002
Issued Date -
N/A
app pub date -
Sep 17, 1998
filing date -
Jul 11, 1996
priority date (Note) -
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Abstract
An apparatus and method for imaging low contrast one and two-dimensional symbols are provided. A light source directs light onto a target that includes a low contrast symbol. An imaging element receives light reflected off of the target and creates an image of the target therefrom. A light level detector determines the intensity level of the light received by the imaging element, and when the intensity level exceeds a predetermined threshold, a controller causes the image data created by the imaging element to be stored in a data memory. In an embodiment of the invention, a light wand is provided with the light source and imaging element. The light wand is adapted to read low contrast bar code symbols disposed on a substrate material using specular light reflected from the bar code symbols by maintaining the light wand at an optimum angle with respect to the substrate material. A alignment tip may further be utilized with the light wand to ensure that the light wand is maintained at the optimum angle.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- INTERMEC IP CORP.
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Ackley, H Sprague | Seattle, WA | 145 | 7079 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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