Sensor
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United States of America Patent
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Sep 20, 2005
Grant Date -
Jan 29, 2004
app pub date -
Feb 27, 2003
filing date -
Mar 4, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The relative position of two members is determined based upon a detected relative intensities of first and second colors of light. The intensity balance associated with relative occlusion of first and second color filter portions on one member by a mask on the other member. An exemplary use is in rotational position sensing within a limited rotation range. With a given compliance between the two members, the position sensing can be used as a proxy for torque sensing.
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