Title:
SUBJECT INFORMATION ACQUISITION DEVICE, CONTROLLING METHOD THEREOF AND ACOUSTIC SIGNAL ACQUISITION DEVICE
Document Type and Number:
Japanese Patent JP2015019732
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a subject information acquisition device which acquires a two-dimensional sound pressure distribution at a high sampling rate when receiving an acoustic signal using a Fabry-Perot type probe.SOLUTION: A subject information acquisition device includes: a Fabry-Perot type interferometer 105 on which an elastic wave from a subject is incident; an array light source 106 which includes a plurality of light emitting elements capable of controlling the wavelength of pulse light to be emitted; a control part 108 which controls the array light source 106; a photodiode 109 which detects reflection light obtained by reflecting the pulse light emitted from the array light source 106 by the Fabry-Perot type interferometer 105; and a processing part 110 which obtains intensity of the elastic wave by using reflection light intensity detected by the photodiode 109 to generate subject information indicating characteristics of the subject on the basis of the intensity of the elastic wave. The control part 108 makes the plurality of light emitting elements sequentially irradiate the Fabry-Perot type interferometer 105 with the pulse light at time intervals. The processing part 110 obtains time division data of the reflection light intensity on the basis of the time intervals.
Inventors:
NAKAJIMA TAKAO
UCHIDA TAKESHI
UCHIDA TAKESHI
Application Number:
JP2013148451A
Publication Date:
February 02, 2015
Filing Date:
July 17, 2013
Export Citation:
Assignee:
CANON KK
International Classes:
A61B8/00; H04R23/00
Attorney, Agent or Firm:
Kazunobu Sera
Yoshiyuki Kawaguchi
Junichi Wakuta
Koichiro Sakai
Nakamura 剛
Takeshi Niwa
Yoshiyuki Kawaguchi
Junichi Wakuta
Koichiro Sakai
Nakamura 剛
Takeshi Niwa