Patent ID: 7468034

Claim:
A biological information monitoring apparatus for monitoring biological information by acquiring information on positional displacements of a surface of a living body, said apparatus comprising: an electromagnetic wave generating unit for generating an electromagnetic wave of a frequency band between 300 GHz and 30 THz and radiating it into air; an electromagnetic wave detecting unit for detecting the electromagnetic wave scattered by the surface of the living body; a first computational-determination unit for computationally determining changes with time of the positional displacements of the surface of the living body from a state of propagation of the electromagnetic wave; a second computational-determination unit for computationally determining characteristic quantities of the living body from the changes with time as biological information; and a memory unit for storing characteristic quantities of a living body in advance, wherein an output signal obtained as biological information from said second computational-determination unit is compared with the characteristic quantities stored in said memory unit to judge physical conditions relating to a blood pressure or a degree of hardening of arteries of the living body, and a result of judgment is displayed by characters or output by voice sounds.