BIOLOGICAL SIGNAL DETECTION SENSOR

摘要

PROBLEM TO BE SOLVED: To detect biological signals of the pulses or the like of a subject or the like with excellent detection sensitivity at all times without contacting. SOLUTION: A detection unit 3 is provided inside a headrest 2 for receiving the rear head part 8a of the subject 8, the rear head part 8a is irradiated with light beams from the detection unit 3, reflected light at the rear head part 9a is detected and the biological signals (pulse signals) included in the reflected light are detected. Since the rear head part 8a is practically exposed and a position is relatively fixed, the excellent detection sensitivity is obtained at all times without being affected by clothes or the like.