Patent ID: 9074991
Filing Date: 2015-07-07
Classification: A61B,G01N

Abstract:
1. A measuring apparatus comprising: a plurality of laser sources for generating pulsed lights; a control unit for controlling excitation start timing(s) of said laser sources by outputting an excitation start signal to respective ones of said laser sources, and controlling oscillation start timing(s) of said laser sources by outputting an oscillation start signal to ones of said laser sources after a predetermined time has elapsed from the output of the excitation start signal, so as to generate pulsed lights from said laser light sources; an acoustic wave receiving unit for receiving an acoustic wave generated in a subject by irradiation of the subject with the pulsed lights; and a signal processing unit for obtaining information of the subject, using a signal which is output from said acoustic wave receiving unit, wherein said plurality of laser sources include a first laser source and a second laser source of which preparation time from the start of the excitation to the generation of the pulsed light is longer than that of said first laser source, and said control unit sets timing of outputting the excitation start signal to said first laser source to follow timing of outputting the excitation start signal to said second laser source according to a difference of the preparation time between said first laser source and said second laser source.