BIO-INFORMATION DETECTION DEVICE

PROBLEM TO BE SOLVED: To accurately detect bio-information without making contact with the living body even if the living body is moving. SOLUTION: A P-polarized beam is irradiated toward a living body 10 by a polarization filter 16 and a lens 18, and the beam reflected from the living body 10 is sp...

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Bibliographic Details
Main Authors MATSUDA MORIHIRO, MIZUNO TETSUYA, YAMADA MICHIHARU, ITO HIROSHI, MAEDA MITSUTOSHI, TERADA SHIGEO
Format Patent
LanguageEnglish
Published 18.05.1999
Edition6
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:PROBLEM TO BE SOLVED: To accurately detect bio-information without making contact with the living body even if the living body is moving. SOLUTION: A P-polarized beam is irradiated toward a living body 10 by a polarization filter 16 and a lens 18, and the beam reflected from the living body 10 is split by a polarization beam splitter 22 into a P-polarized beam and an S-polarized beam, which are detected respectively by a first light receiving part 24 and a second light receiving part 26. A processing circuit 28 multiplies detection data about the S-polarized beam by K so that the component of movement of the living body involved in the detection data about the P- polarized beam and the S-polarized beam detected by the first light receiving part 24 and the second light receiving part 26 become equal. The difference between the detection data about the S-polarized beam multiplied by K and the detection data about the P-polarized beam is computed to obtain information about the heartbeats of the living body.
Bibliography:Application Number: JP19970297163