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Symmetric LED array for pulse oximetry

  • US 20080081966A1
  • Filed: 09/29/2006
  • Published: 04/03/2008
  • Est. Priority Date: 09/29/2006
  • Status: Active Grant
First Claim
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1. A sensor comprising:

  • a first source of electromagnetic radiation configured to operate at a first wavelength;

    a second source of electromagnetic radiation configured to operate at a second wavelength;

    a third source of electromagnetic radiation configured to operate at a third wavelength; and

    a photodetector configured to receive electromagnetic radiation from the blood-perfused tissue;

    wherein the first and third sources of electromagnetic radiation are symmetrically disposed spatially relative to the second source.

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