PROBLEM TO BE SOLVED: To provide a biological optical measurement apparatus which can appropriately set an amplification factor of a measurement signal for passing light received by a light receiving probe.SOLUTION: A biological optical measurement apparatus 100 disclosed by this invention comprises: a light receiving unit 120 which receives passing light that has passed through the inside of a living body 190 with a light receiving probe 151b when measurement light is emitted separately from a plurality of irradiation probes 151a, converts the received passing light to an electric signal, and outputs a measurement signal V amplified at a preset amplification factor and a data processing unit 400 which generates biological optical measurement data by digitally converting the measurement signal V output from the light receiving unit 120. The data processing unit obtains a standard deviation of the intensity of the measurement signal and sets the amplification factor based on the obtained standard deviation and a coefficient α determined in accordance with the number N of superimposed frequencies of the measurement signal.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】受光プローブに受光された通過光の計測信号の増幅率を適切に設定することができる生体光計測装置を提供する.【解決手段】本発明の生体光計測装置100は、複数の照射プローブ151aからそれぞれ計測光が照射され、生体190の内部を通過した通過光を受光プローブ151bで受光し、受光された通過光を電気信号に変換し、予め設定された増幅率で増幅した計測信号Vを出力する受光部120と、該受光部120から出力される計測信号Vをディジタル変換して生体光計測データを生成するデータ処理部400を備えてなり、データ処理部は、計測信号の強度の標準偏差を求め、求めた標準偏差と、計測信号の重畳波数Nに応じて定められる係数αとに基づいて、増幅率を設定するようにしたことを特徴とする。【選択図】 図3
