×

Multiple wavelength sensor equalization

  • US 7,647,083 B2
  • Filed: 03/01/2006
  • Issued: 01/12/2010
  • Est. Priority Date: 03/01/2005
  • Status: Active Grant
First Claim
Patent Images

1. A physiological sensor having optical intensity compensation introduced along an optical path from emission to detection so as to compensate for unequal tissue attenuation as a function of wavelength by a tissue site, the sensor comprising:

  • a plurality of emitters configured to transmit optical radiation having a plurality of wavelengths into the tissue site;

    at least one detector capable of receiving the optical radiation after tissue attenuation; and

    an optical filter, wherein the optical filter attenuates at least a portion of a wavelength spectrum so as to compensate for an imbalance in an attenuation of the plurality of wavelengths by the tissue site.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×