A biological optical measurement instrument including: a measurement probe positionable to a surface of a subject, which irradiates light beams having a plurality of wavelengths from a light beam source through optical fibers onto the subject, and collects the light beams passed inside the subject from...http://www.google.es/patents/US7778694?utm_source=gb-gplus-sharePatente US7778694 - Biological optical measurement instrument