Patent ID: 7048689
Filing Date: 2006-05-23
Classification: A61B,G01N,G01S

Abstract:
1. An ultrasonic receiving apparatus comprising: a light source for generating broadband light; an ultrasonic detecting element including an ultrasonic sensing portion that expands and contracts in response to a received ultrasonic wave and has optical reflectance that changes in accordance with expansion and contraction thereby performing intensity modulation on the light generated by said light source; spectrum-separating means for spectrum-separating the light intensity-modulated by said ultrasonic detecting element; first photo-detecting means having a plurality of photoelectric conversion elements for detecting the light spectrum-separated by said spectrum-separating means for plural wavelength components, respectively; and second photo-detecting means for detecting a selected wavelength component included in the light spectrum-separated by said spectrum-separating means on the basis of a detection result of said first photo-detecting means.