PROBLEM TO BE SOLVED: To provide a technology for performing measurement with enough signal intensity while suppressing costs of a device.SOLUTION: An acoustic wave measurement device includes: a light source for radiating light having a wavelength component in a plurality of wavelength ranges a plurality of optical filters which are placed in optical paths to a subject from the light source and shield/transmit respective rays of light of a specific wavelength range out of the plurality of wavelength ranges a detector for detecting an acoustic wave occurring when the light is radiated to the subject a control unit for generating a plurality of light radiation conditions in which combinations of wavelength components included in the light radiated to the subject differ from one another by changing combinations of the optical filters and a signal processing part for calculating light absorption coefficients of the subject with respect to the rays of light of the respective wavelength ranges on the basis of pressure of the acoustic waves detected under the plurality of light radiation conditions and intensity of radiation light in each wavelength range of the plurality of light radiation conditions.COPYRIGHT: (C)2011,JPO&INPIT【課題】装置のコストを抑制しつつ、十分な信号強度で測定を行うことができる技術を提供する。【解決手段】本発明では、複数の波長領域において波長成分を有する光を照射する光源と、前記光源から被検体への光路に配置され、前記複数の波長領域のうち、それぞれ特定の波長領域の光を遮断または透過する複数の光学フィルタと、被検体に光が照射された時に発生する音響波を検出する検出器と、光学フィルタの組合せを変えることで、被検体に照射する光に含まれる波長成分の組み合わせが互いに異なる複数の光照射条件を生成する制御部と、前記複数の光照射条件のそれぞれで検出した音響波の圧力と、前記複数の光照射条件のそれぞれの波長領域ごとの照射光の強度とに基づいて、それぞれの波長領域の光に対する被検体の光吸収係数を算出する信号処理部と、を備える音響波測定装置を用いる。【選択図】図3
