公开(公告)号：US09730588B2

公开(公告)日：2017-08-15

申请号：US14519809

申请日：2014-10-21

Applicant: FUJIFILM Corporation

Inventor： Takeya Abe

IPC: A61B8/00 ,  A61B5/00 ,  G01N29/24 ,  A61B8/14 ,  A61B8/08

CPC classification number: A61B5/0095 ,  A61B5/0035 ,  A61B8/14 ,  A61B8/4416 ,  A61B8/4444 ,  A61B8/463 ,  A61B8/5246 ,  G01N29/2418 ,  G01N29/2462 ,  G01N2291/023

Abstract: An object of the invention is to reduce the size of a probe for a photoacoustic measurement device. A light guide 71 is arranged such that one of a two side surfaces 71a is closer to a probe axis C which faces a subject than the other side surface and a light emission end surface 71c is closer to the probe axis C than a light incident end surface 71b when the probe is used. When a refractive index of the light guide 71 with respect to the light is n1 and a refractive index of a medium around the light guide with respect to the light during photoacoustic measurement is n2 (n2