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Shunt barrier in pulse oximeter sensor

  • US 7,386,334 B2
  • Filed: 09/25/2006
  • Issued: 06/10/2008
  • Est. Priority Date: 03/05/1996
  • Status: Expired due to Fees
First Claim
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1. A sensor comprising:

  • a substrate layer;

    a light emitter coupled to the substrate layer;

    a light detector coupled to the substrate layer; and

    a partially opaque layer disposed over the light emitter, the partially opaque layer having a substantially uniform optical density for absorbance of light from the light emitter, the partially opaque layer being configured to attenuate light shunted through a length of the partially opaque layer oriented along a path from the light emitter to the light detector and to pass light from the light emitter through a thickness of the partially opaque layer oriented directly over the light emitter.

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