Patent ID: 7313425

Claim:
An optical measurement device for use in non-invasive measurements on a patient's body, the device comprising: an illumination assembly configured and operable to generate illuminating light of a predetermined wavelength range; a detection assembly configured and operable to concurrently provide transmission-mode and reflection-mode of light detection, the detection assembly comprising a first transmission-mode detector unit configured for detecting a first light signal indicative of the transmission of the illuminating light in the predetermined wavelength range through an illuminated body portion and generating first measured data indicative of the detected transmitted light, and a second reflection-mode detector unit operating simultaneously with said first detector and configured for detecting a second light signal indicative of the reflection of the illuminating light in the predetermined wavelength range from the illuminated body portion and generating second measured data indicative of the detected reflected light; and a light directing assembly comprising a light diffuser for scattering back light incident thereto, the light diffuser being oriented to redirect at least one of the illuminating, transmitted and reflected light components back towards the illuminated body portion to thereby cause further interaction of the redirected light with the body portion, and allow detection of the transmitted and reflected light components by said first and second detection units, thereby increasing amount of light reaching a region of interest inside the body portion and thus maximizing homogeneity of the first and second detected light signals.