PROBLEM TO BE SOLVED: To provide a photoacoustic apparatus, a photoacoustic apparatus control method, and an analyte holding member for the photoacoustic apparatus which reduces the possibility that unnecessary high-density light enters the eyes of an analyte and an operator in a period when photoacoustic measurement is not performed.SOLUTION: The photoacoustic apparatus comprises: a holding part 6 for holding an analyte 8 a light irradiation part 5 which irradiates the analyte 8 with light via the holding part 6 and a probe 12 which receives an acoustic wave 10 propagated from the analyte 8. The holding part 6 comprises a light diffusion surface 7 which diffuses light and reduces the degree of the light diffusion due to the adhesion of an acoustic matching material 11 to the light irradiation part 5.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】光音響測定を行っていない期間に、不要な高密度の光が被検者ならびに操作者の目に入ってしまう可能性を低減する光音響装置、光音響装置の制御方法、および光音響装置用の被検体保持部材を提供する。【解決手段】光音響装置は、被検体8を保持する保持部6と、保持部6を介して被検体8に光を照射する光照射部5と、被検体8から伝搬した音響波10を受信する探触子12と、を有し、保持部6は、光を拡散し、かつ、光照射部5に音響整合材11が付着することにより光の拡散の程度が低下する光拡散面7を有する。【選択図】図1
