HEART RATE MONITOR AND STRAP
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Mar 27, 2015
filing date -
Mar 28, 2014
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Abstract
A heart rate monitor comprising an optical heart rate (OHR) sensor and a strap for mounting the sensor to a limb of a user is described. The OHR sensor comprises a sensing unit including at least one light emitter arranged to emit light into the skin of a user and a photodetector arranged to sense light reflected through the skin of the user. The sensing unit is arranged substantially centrally in the strap and the strap comprises compressible edge portions that run along opposite sides of the sensing unit such that, when the strap is mounted to a limb of a user, the edge portions are compressed against the skin to prevent or reduce the ingress of ambient light to the sensing unit.
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