An apparatus for determining concentrations of hemoglobins includes a light source for emitting lights of at least three different wavelengths, a first wavelength in a near-infrared region, a second wavelength in a red region, and a third wavelength in a red orange region, light receiving device for...http://www.google.es/patents/US6622095?utm_source=gb-gplus-sharePatente US6622095 - Apparatus for determining concentrations of hemoglobins
Apparatus for determining concentrations of hemoglobins
