PROBLEM TO BE SOLVED: To simplify a mechanism of a device and to enhance easiness in replacement of a member when a device for performing photoacoustic measurement has a member for holding a subject and a member for measuring light quantity.SOLUTION: An object information acquiring apparatus includes: a light source a holding unit for holding a subject an acoustic receiving unit for receiving an acoustic wave generated by irradiating a subject with light emitted from a light source through the holding unit to convert it into an electric signal a light measuring unit for measuring the light emitted from the light source a processing unit for calculating light density distribution in the subject based on the light measured by the light measuring unit to generate property information in the subject based on the light density distribution and the electric signal and a support unit for detachably supporting at least a part of the light measuring unit and the holding unit independently.COPYRIGHT: (C)2013,JPO&INPIT【課題】光音響測定を行う装置が被検体を保持する部材と光量を測定するための部材を有する場合に、装置の機構を単純にし、部材の交換容易性を高める。【解決手段】光源と、被検体を保持する保持部と、光源から出射した光を保持部を介して被検体に照射することで発生する音響波を受信して電気信号に変換する音響受信部と、光源から出射される光を測定する光測定部と、光測定部が測定した光から被検体における光密度分布を算出し、光密度分布と、電気信号とに基づいて被検体内の特性情報を生成する処理部と、光測定部の少なくとも一部と、保持部とをそれぞれ独立して取り外し可能に支持する支持部を有する被検体情報取得装置を用いる。【選択図】図1A
