Ultrasonic generator

Abstract

According to one embodiment, an ultrasonic generator includes a plurality of ultrasonic transducers and a drive unit. The ultrasonic transducers each are configured to generate an ultrasonic wave. The drive unit is configured to supply a drive signal generating the ultrasonic wave to each of the ultrasonic transducers, and configured to change phase of the drive signal supplied to a second ultrasonic transducer among the ultrasonic transducers relative to the drive signal supplied to a first ultrasonic transducer among the ultrasonic transducers. The second ultrasonic transducer is located in a position in which a traveling direction of a combined wave front of a first combined wave is aligned with a frontal direction, the first combined wave being formed by combining the ultrasonic waves generated by each of the first ultrasonic transducer and the second ultrasonic transducer, wherein the position is more frontward in the frontal direction of the first ultrasonic transducer than the first ultrasonic transducer.

Dependencies are inferred from the claim text.