Multiple wavelength sensor substrate
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United States of America Patent
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Jul 20, 2010
Issued Date -
N/A
app pub date -
Mar 1, 2006
filing date -
Mar 1, 2005
priority date (Note) -
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Abstract
A physiological sensor has emitters configured to transmit optical radiation having multiple wavelengths in response to corresponding drive currents. A thermal mass is disposed proximate the emitters so as to stabilize a bulk temperature for the emitters. A temperature sensor is thermally coupled to the thermal mass. The temperature sensor provides a temperature sensor output responsive to the bulk temperature so that the wavelengths are determinable as a function of the drive currents and the bulk temperature.
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