Modular Focus System for Image Based Readers
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United States of America Patent
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app pub date -
Aug 7, 2014
filing date -
Jan 12, 2009
priority date (Note) -
Abandoned
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Abstract
A modular focus system for image based code readers includes swappable lens attachments enables fixed focus, manual focus, and variable focus operation from a single reader. A manual focus lens cap includes a manually adjustable focus ring to change the focus of the reader. A variable focus lens module includes a liquid lens that is manipulated by a voltage delivered via a pair of electrodes to adjust the focus of the reader. The lens attachments can be swapped out and replaced as needed.
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