Patent ID: 8616062

Claim:
An ultrasonic inspection system to be employed in ultrasonic inspection of a test object based on an immersion technique comprising: an ultrasonic sensor that emits or receives an ultrasonic wave, and which includes at least two lasers disposed such that optical axes of the lasers are tilted toward each other so that visible laser beams of the lasers intersect at a position separated by a predetermined distance from an ultrasonic wave emitting surface of the ultrasonic sensor; an ultrasonic inspection device that displays information on a result of inspection; a drive unit that is remotely controlled in order to move the ultrasonic sensor to a predetermined position on the test object; a laser that irradiates a laser beam on the test object; and imaging equipment that images the test object and a laser beam irradiated position, and which includes a camera, wherein a distance to a position at which the visible laser beams intersect is squared with a water distance required for the ultrasonic wave, which is emitted from the ultrasonic sensor, to become incident to the test object.