Patent ID: 9566612
Date: 2017-02-14
CPC Classifications: B06B,G10K

Claim:
1. An ultrasonic probe, comprising: a piezoelectric vibrator that transmits and receives ultrasonic waves; and a layer connected to a rear surface of the piezoelectric vibrator, the rear surface of the piezoelectric vibrator being defined as being on a side opposite to a side of the piezoelectric vibrator receiving and sending the ultrasonic waves, the layer having a larger acoustic impedance than the piezoelectric vibrator, wherein the layer comprises a plurality of grooves arranged along a lens direction such that the rear surface of the piezoelectric vibrator faces a groove opening of each groove, and the plurality of grooves are shaped such that a ratio of a groove capacity to a layer volume increases in the lens direction away from a center of the rear surface of the piezoelectric vibrator.