PROBLEM TO BE SOLVED: To provide a photoacoustic device capable of suppressing deterioration in a quantitative property of optical characteristic information due to a composition corresponding to a reflective wave of a photoacoustic wave.SOLUTION: A photoacoustic device includes: an acoustic wave transmitter that transmits a transmitted acoustic wave to a specific region a controller that controls a transmission waveform of the transmitted acoustic wave to be transmitted from the acoustic wave transmitter a light source that emits light to which a region including the specific region is exposed when the acoustic wave reaches the specific region an acoustic wave receiver that receives the acoustic wave and outputs a time-series reception signal and a signal processor that acquires optical characteristic information on the basis of the time-series reception signal. The controller controls the transmission waveform so as to reduce amplification of a photoacoustic wave generated in the specific region by the transmitted acoustic wave to be transmitted from the acoustic wave transmitter.COPYRIGHT: (C)2015,JPO&INPIT【課題】光音響波の反射波に対応する成分による光学特性情報の定量性の低下を抑制することができる光音響装置を提供する。【解決手段】光音響装置は、特定の領域に送信音響波を送信する音響波送信部と、音響波送信部から送信される送信音響波の送信波形を制御する制御部と、音響波が特定の領域に到達するときに特定の領域を含む領域に照射される光を発する光源と、音響波を受信して時系列の受信信号を出力する音響波受信部と、時系列の受信信号に基づいて光学特性情報を取得する信号処理部とを有し、制御部は、音響波送信部から送信される送信音響波により特定の領域で発生する光音響波の振幅を低減するように送信波形を制御する。【選択図】図2
