To prevent a range in which the resolution is uniform from being narrowed even in the case of a detector in which detection elements are arranged on a spherical surface.SOLUTION: An information acquiring device includes a detector in which the receiving surfaces of at least some of a plurality of detection elements for receiving acoustic waves from a subject have different angles. In addition, in order to change the relative position between the subject and the highest resolution region determined by the arrangement of the plurality of detection elements, a scanning device which moves at least one of the subject and the detector is provided.SELECTED DRAWING: Figure 3【課題】 検出素子を球面配置した検出器の場合、分解能が均一な範囲が狭くなってしまう。【解決手段】 本発明の情報取得装置は、被検体からの音響波を受信する複数の検出素子のうち少なくとも一部の検出素子の受信面がそれぞれ異なる角度となるように設けられた検出器を備える。そして、前記被検体と、前記複数の検出素子の配置により定まる最高分解能領域と、の相対位置を変化させるため、前記被検体と前記検出器のうち少なくとも一方を移動させる走査装置を備えることを特徴とする。【選択図】 図３
