Patent ID: 7421900
Filing Date: 2008-09-09
Classification: B06B,G01N

Abstract:
1. An ultrasonograph comprising: a laser beam source generating an intermittent laser beam; an optical transmitter irradiating an inspection object with the generated intermittent laser beam in a spot-like state; a scan-moving mechanism scan-moving the optical transmitter relatively to the inspection object; a vibration displacement detecting section which performs non-contact detection of vibration displacement on a surface of the inspection object by a displacement measuring method using a laser beam, the vibration displacement caused by an echo of an ultrasonic wave in the inspection object generated by the irradiated laser beam, and which transduces the vibration displacement to an electrical signal; and a processing section which performs processing for visualizing a state of the inspection object based on the electrical signal obtained after the transducing and a position of the scan-moved optical transmitter.