PROBLEM TO BE SOLVED: To provide a photoacoustic apparatus capable of acquiring two-dimension information without comprising a configuration in which a support member comprising plural acoustic wave detection parts is scanned in an XY direction.SOLUTION: A photoacoustic apparatus comprises: acoustic wave detection parts 18 for detecting an acoustic wave generated from an analyte when a light from a light source is radiated to the analyte, and outputting a detection signal a support member 17 comprising plural acoustic wave detection parts 18 and having a curve surface and a signal processing part for acquiring information of the analyte based on the detection signal. The photoacoustic apparatus further comprises a rotation control part for changing positions of the acoustic wave detection parts 18 by rotating the support member 17, the rotation control part is configured so that, a region 19a having the highest resolution determined by the positions of the plural acoustic wave detection parts 18, is offset to a rotation shaft of the support member 17, the region 19a having the highest resolution can be scanned by rotating the support member 17.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】複数の音響波検出部を備えた支持部材をXY方向に走査する構成を備えることなく2次元の情報を得られる光音響装置を提供する。【解決手段】光音響装置は、光源からの光が被検体に照射されることにより、被検体から発生する音響波を検出し、検出信号を出力する音響波検出部18と、複数の音響波検出部18が設けられた、曲面を有する支持部材17と、検出信号に基づいて被検体の情報を取得する信号処理部と、を有する光音響装置であって、支持部材17を回転させることで、音響波検出部18の位置を変える回転制御部をさらに有し、回転制御部は、複数の音響波検出部18の位置によって決まる最も分解能が高い領域19aが支持部材17の回転軸に対してオフセットされ、最も分解能が高い領域19aを、支持部材17を回転させることで走査することが可能に構成されている。【選択図】図1
