PROBLEM TO BE SOLVED: To provide a photoacoustic device in which photographing may be carried out after confirmation of filling up with sufficient matching solution when a sample is held by holding a subject with a holding member.SOLUTION: There is provided a photoacoustic device comprising: holding means 102 storing acoustic matching solution and holding a subject inserted into an insertion port a plurality of probes 104 receiving acoustic wave generated in the subject and converting it into an electric signal on the basis of a photographing instruction a supporter 106 supporting the plurality of probes so that a direction axis of at least a part of probes within the plurality of probes signal processing means 105 obtaining property information in the subject on the basis of the obtained electric signal detecting means 110 detecting water level of acoustic matching solution supplied to the inside of the holding means photographing instruction means 111 outputting the photographing instruction on the basis of output from the detecting means.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】保持部材で被検体を保持したときに、マッチング液が十分に満たされていることを確認してから撮影することができる光音響装置を提供する。【解決手段】音響マッチング液を貯留し、かつ、挿入口に挿入された被検体を保持する保持手段102と、撮影指示に基づいて、被検体内で発生した音響波を受信し、電気信号に変換する複数の探触子104と、複数の探触子のうち、少なくとも一部の探触子の指向軸が集まるように複数の探触子を支持する支持体106と、取得された電気信号に基づいて、被検体内の特性情報を取得する信号処理手段105と、保持手段内に供給された音響マッチング液の水位を検知する検知手段110と、検知手段の出力に基づいて、撮影指示を出力する撮影指示手段111と、を備える光音響装置。【選択図】図1
