Patent ID: 7809418
Filing Date: 2010-10-05
Classification: A61B,G01N

Abstract:
1. An apparatus, comprising: a light source to generate a plurality of light beams, each of the plurality of light beams having a different wavelength range; a light funnel, of frusto-conical shape, to collect the plurality of light beams through an entrance opening having a first diameter and to direct the plurality of light beams to a target area through an exit opening having a second diameter, wherein the second diameter is less than the first diameter; an aperture to direct the plurality of light beams emitting from the target area; a lens configured to collect the plurality of light beams directed from the aperture; a detector comprising a plurality of light-sensing devices each configured to detect a light beam passing through the lens and configured to generate an output signal indicative of an intensity of light detected; and a processor for determining a blood characteristic as a function of each generated output signal.