Dynamic focus calibration, such as dynamic focus calibration using an open-loop system in a bar code scanner
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United States of America Patent
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Aug 21, 2012
Grant Date -
Dec 16, 2010
app pub date -
May 6, 2010
filing date -
May 10, 2007
priority date (Note) -
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Abstract
A system and method for recalibrating a bar code scanner or other optical system is described. In some cases, the system dynamically adjusts the focal length of a lens assembly based on open-loop process, such as based on feedback related to a distance between the lens assembly and an imaged object. In some cases, the system dynamically adjusts the lens assembly in order to provide auto focusing or zoom adjustment.
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