Method and apparatus for utilizing specular light to image low contrast symbols
AssigneeIntermec IP Corp.
InventorH. SPRAGUE ACKLEY
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AssigneeIntermec IP Corp.
InventorH. SPRAGUE ACKLEY
Estimating the term…
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.
An apparatus for reading low contrast symbols disposed on a substrate, comprising a wand including a light source for directing source light onto a low contrast symbol and an imaging element for receiving light reflected from said low contrast symbol, said wand being oriented with respect to said substrate such that said reflected light comprises predominantly specular reflected light.
A method for imaging a low contrast symbol disposed on a substrate utilizing a light wand comprising a light source and an imaging element, said method comprising:
An apparatus for reading low contrast symbols disposed on a substrate, comprising:
Dependencies are inferred from the claim text.