Patent ID: 7341559

Claim:
An ear sensor for providing one or more intensity signals representative of at least one physiological parameter of pulsing blood, the ear sensor comprising: an emitter which emits light of at least first and second wavelengths; a light-sensitive detector which provides intensity signals resulting from detection of the at least first and second wavelengths of the light after the light is attenuated by body tissue carrying pulsing blood; a clip housing including one or more windows through which the light or the attenuated light will pass, wherein the clip housing also houses the emitter and the detector in movable proximity to one another; and a plurality of tissue contacting surfaces configured to be positioned between the emitter and the tissue and between the detector and the tissue when the clip housing is applied to a measurement site, wherein the tissue contacting surfaces comprise silicone lenses and wherein said silicone lenses comprise a substantially translucent textured surface that increases a coefficient of friction between the silicone lenses and a tissue site.