Masimo Laboratories, Inc.

Cercacor Laboratories, Inc.

James P Coffin

Ammar Al-Ali

Mohamed Kheir Diab

Marcelo M Lamego

Yassir Kamel Abdul-Hafiz

Abdul-Hafiz Yassir

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.

Multiple wavelength sensor substrate

A physiological sensor has intensity compensation introduced along an optical path from emission to detection so as to compensate for unequal tissue attenuation as a function of wavelength. The sensor has emitters configured to transmit optical radiation having multiple wavelengths into a tissue site. At least one detector is capable of receiving the optical radiation after tissue attenuation. An equalization is capable of compensating optical radiation intensity so as to account for differences in tissue attenuation across at least a portion of the multiple wavelengths.

Multiple wavelength sensor equalization

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Mission Viejo, CA, United States of America

James P Coffin