PROBLEM TO BE SOLVED: To improve the safety of a photoacoustic device.SOLUTION: A photoacoustic device comprises: light applying means that applies light to a subject an acoustic wave detector that detects acoustic waves generated in the subject due to the light and converts them into electric signals a first photodetector that acquires the intensity of light propagated in the subject and leaked to the outside of the subject an information acquisition unit that generates information in the subject on the basis of the electric signals and a control unit that controls the intensity of light to be applied to the subject on the basis of the intensity of light acquired by the first photodetector.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】光音響装置の安全性を向上させる。【解決手段】被検体に対して光を照射する光照射手段と、前記光に起因して被検体内で発生した音響波を検出し、電気信号に変換する音響波検出器と、前記被検体内を伝播し、被検体の外部へ漏出した光の強度を取得する第一の光検出器と、前記電気信号に基づいて、前記被検体内の情報を生成する情報取得部と、前記第一の光検出器が取得した光の強度に基づいて、前記被検体に照射される光の強度を制御する制御部と、を有することを特徴とする。【選択図】図1
