Patent ID: 8991261
Filing Date: 2015-03-31
Classification: A61B,G01N

Abstract:
1. An acoustic wave measuring apparatus comprising: a light source that radiates light having a wavelength component in a plurality of wavelength areas; a plurality of light filters that shut off the light in a specified one of the plurality of wavelength areas respectively; a plurality of reflection-type devices that reflects light radiated from said light source to said plurality of light filters; a detector that detects an acoustic wave generated upon light radiation on the subject; a controller that changes a combination of said light filters and thus generates a plurality of light irradiating conditions having different combinations of the wavelength components contained in the light radiated on the subject; and a signal processor that calculates an optical absorption coefficient of the subject for the light in each of the plurality of wavelength areas, based on a pressure of the acoustic wave detected under each of the plurality of light irradiating conditions and a strength of the radiated light for each of the plurality of the light irradiating conditions, wherein said plurality of light filters are arranged in a matrix-like shape, wherein said plurality of reflection-type devices are arranged in a matrix-like shape corresponding to said plurality of light filters and individually switches whether the light radiated from said light source is reflected to each of said plurality of light filters, and wherein said controller generates the plurality of light irradiating conditions by controlling whether each of said plurality of reflection-type devices reflects the light radiated from said light source to each of said plurality of light filters.