Optical sensor for a monitoring device
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United States of America Patent
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Jan 5, 2016
Grant Date -
N/A
app pub date -
Jul 27, 2012
filing date -
Sep 28, 2004
priority date (Note) -
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Abstract
An optical sensor for a monitoring device for monitoring the vital signs of a user is disclosed herein. The optical sensor preferably includes a photodetector and a two light emitting diodes (“LEDs”) that emit green light. The optical sensor includes a light barrier that includes multiple walls that block any non-reflected light from the LEDs from transmission to the photodetector so that the photodetector only receives light reflected from the artery of the user resulting in a more accurate detection of the heart rate of the user. A sensor signal from the optical sensor is processed with an accelerometer output signal from the accelerometer to generate a real-time vital sign for a user.
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