| 摘要 |
A biological property check device includes a plurality of probes ( 20 ) each having a light emitting element ( 26 ) for applying light to a biological tissue and a light reception element ( 28 ) for detecting the reflected light. Each probe ( 20 ) is successively selected by a switch circuit ( 60 ) under control of a control section ( 76 ) and connected to a property calculation section ( 64 ). The property calculation section ( 64 ) includes a phase shift circuit for changing the frequency according to the phase difference between the input waveform to the light emitting element ( 26 ) and the output waveform from the light reception element ( 28 ). According to the frequency change, the property of the biological tissue is calculated. The property calculated is displayed on a display section ( 74 ) via a data collection section ( 70 ) and a display processing section ( 72 ).
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