Method and apparatus for non-invasive phase sensitive measurement of blood glucose concentration

摘要: A method and apparatus for non-invasive measurement of blood glucose concentration based on producing a polarized-modulated laser beam via polarizing frequency shifter (24), measuring phase difference introduced, e.g., by finger (F) or ear lobule (E) subject, between reference signal (SR) probe (SP), processing the obtained data which are then presented as concentration. The above-mentioned measurements comprises an infrared source (22), polarized (24) produces beam, piezoelectric transducer (26) driving optical (30) with head (32). latter has input receiving balanced receiver (62). During measurement, is inserted into sensing unit (32), after passing through finger, converted electrical signal, compared processed electronic (34) presents results in form Embodiments circular dichroism caused presence included.