Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2009-01-08
2011-11-22
Epps, Georgia Y (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
Reexamination Certificate
active
08063355
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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“Multi-Turn Absolute Encoder Sensor for Measurement and Control”, Nikon Corporation, Sep. 2, 2008.
Chin Yee Loong
Lee Sze Kuang
Wong Weng Fei
Avago Technologies Limited
Epps Georgia Y
Naphas Renee
LandOfFree
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