To provide an optical ultrasonic tomographic image measuring method and device capable of increasing a measuring depth and obtaining a high resolution.
Light emitted from a laser beam source 1 passes through a beam splitter 2 and is separated into a reference arm and a sample arm, and the light of the reference arm is reflected by a reference mirror 3, passes through the beam splitter 2, turns to a photodetector 7 and becomes reference light. In the meantime, the light of the sample arm is focused by an objective lens 4, transmitted through an ultrasonic transducer 5 and made incident on a measurement sample 6. That is, an interference optical system is incorporated in the probe of an electric scanning type ultrasonic echo device which impresses ultrasonic waves to the sample, the interference optical system and the electric scanning type ultrasonic echo device are synchronized, the measuring depth of the sample is increased, and the high resolution is obtained.
WATABE HIROTERU
TAMURA YASUTAKA
FURUKAWA HIROYASU
KEN TAKATATSU
SATO MANABU
WATABE HIROTERU
TAMURA YASUTAKA