Title:
音響信号受信装置およびイメージング装置
Document Type and Number:
Japanese Patent JP5832182
Kind Code:
B2
Abstract:
There is used an acoustic signal receiving apparatus including a wavelength-tunable light source for irradiating measurement light, a controller for controlling a wavelength of the measurement light, a Fabry-Perot probe having a first mirror on a side where the measurement light enters, a second mirror on a side where an elastic wave from an object enters, and a spacer film positioned between the first and second mirrors and deforms in response to the elastic wave, an array photosensor for detecting a reflected light amount of the measurement light by the Fabry-Perot probe, and a signal processor for acquiring an intensity of the incident elastic wave based on a change in the reflected light amount. The controller sweeps the wavelength of the measurement light, and the signal processor determines the wavelength based on the reflected light amount at each wavelength subjected to the sweep.
Inventors:
Takao Nakajima
Yasushi Asao
Yasushi Asao
Application Number:
JP2011157908A
Publication Date:
December 16, 2015
Filing Date:
July 19, 2011
Export Citation:
Assignee:
Canon Inc
International Classes:
A61B8/00
Domestic Patent References:
| JP2001255306A |
Foreign References:
| WO2011093108A1 | ||||
| US20110083509 |
Other References:
Edward Zhang et al.,Backward-mode multiwavelength photoacoustic scanner using a planar Fabry-Perot polymer film ultrasound sensor for high-resolution three-dimensional imaging of biological tissues,APPLIED OPTICS,2008年 2月 1日,vol. 47, no. 4,pages 561-577
Attorney, Agent or Firm:
Kazunobu Sera
Yoshiyuki Kawaguchi
Mayuko Wakuda
Koichiro Sakai
Takeshi Nakamura
Takeshi Niwa
Yoshiyuki Kawaguchi
Mayuko Wakuda
Koichiro Sakai
Takeshi Nakamura
Takeshi Niwa