PROBLEM TO BE SOLVED: To achieve a reduction in size of a blood pressure measurement device.SOLUTION: A blood pressure measurement device 10 comprises a light emission section 42 for irradiating measurement light and a light reception section 44 for receiving reflected transmitting light of the measurement light on a rear surface of a main body case 12 brought into contact with a measurement portion of an inspection object 2 and measures a blood pressure Pr of the inspection object 2 on the basis of light reception results of the light reception section 44. The blood pressure Pr is calculated as a product of blood flow Q and peripheral vascular resistance R. The blood flow Q is evaluated from a power spectrum obtained by FFT with respect to a light reception signal. The peripheral vascular resistance R is evaluated from an amplitude ratio between an ejection wave and a reflection wave of a volume pulse wave obtained from the light reception signal.SELECTED DRAWING: Figure 1【課題】血圧計測装置の小型化を図ること。【解決手段】血圧計測装置１０は、被検者２の測定部位に接触する本体ケース１２の裏面に、測定光を照射する発光部４２と、測定光の反射透過光を受光する受光部４４とを備え、受光部４４の受光結果に基づいて、被検者２の血圧Ｐｒを計測する。血圧Ｐｒは、血流量Ｒと末梢血管抵抗Ｒとの積として算出する。血流量Ｑは、受光信号に対するＦＦＴによって得られるパワースペクトルから求める、末梢血管抵抗Ｒは、受光信号から得られる容積脈波の駆出波と反射波との振幅比率から求める。【選択図】図１
