作者: James L. Maciey , Jerry D. Wheeler , Jack J. Raymakers
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摘要: An optical reading head system has a calibrated pixel output, consisting of discrete value for each plurality pixels. The scanning station with an exposure region that includes image and detector including array photosensitive sites sense reflected light from the during period to generate output profile region. There are sources lighting Each source emits individually controllable amount such system's is acceptably calibrated. A calibration medium supplied region, target defined calibration. adjusted make within range profile.