Optical readers and methods employing polarization sensing of light from decodable indicia
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United States of America Patent
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Nov 11, 2014
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Dec 13, 2011
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Dec 13, 2011
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Abstract
A method for decoding decodable indicia includes sensing the polarization of light from a plurality of orientations in connection with the decodable indicia, and controlling at least one of energizing an illumination subsystem based on the sensed polarization indicating a generally randomly polarized light, and inhibiting energization of the illumination subsystem based on the sensed polarization indicating a generally linearly polarized light. One or more images are captured, and an attempt is made to decode the decodable indicia using at least one of the one or more images.
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