Mark reading device

Details Mark reading device Mark reading device

G - Physics

06

K

352/53.74

G06K 9/18 (2006.01) G06K 7/10 (2006.01)

Patent

CA 2007405

A mark reading device that reads marks such as a bar code, or the like on a remote surface. A laser beam is outputted, deflected through a scan angle and the reflected energy is read at a detector. This energy is processed and converted to a usable format for input into a computer, cash register, or any type of data collection device. The present invention improves depth of field and readability by varying the output energy of the laser after each successive scan, thus providing a range of energy levels at the detector.

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