Reflective multi-turn encoders with different light sensing systems
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United States of America Patent
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Nov 22, 2011
Grant Date -
Jul 8, 2010
app pub date -
Jan 8, 2009
filing date -
Jan 8, 2009
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Abstract
Disclosed herein are a number of different embodiments of reflective multi-turn optical encoders with different light sensing systems. Three different basic configurations of reflective multi-turn optical encoder light sensing systems are disclosed herein: (a) optical encoders employing multiple arrays of light detectors; (b) optical encoders employing multiple arrays of stacked die light sensors, and (c) optical encoders employing variable tone density light sensing systems.
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