The disclosed ultrasonic probe in the present application, are arranged in a first direction, and a transducer array having a plurality of transducers for performing mutual conversion between an electrical pulse and ultrasonic waves, the first direction and the In a section parallel to the transmission direction of the ultrasonic wave, the has a convex surface in the transmission direction, and an acoustic lens for focusing the ultrasonic waves transmitted from the plurality of transducers, the acoustic lens and the acoustic velocity is different materials and is configured, and at least two acoustic adjustment layer which is arranged between at least two and the acoustic lens of the plurality of transducers arranged in the first direction, wherein at least two of said acoustic adjustment layer At least one of the thickness of the material and the transmission directions are different from each other, and at least two acoustic adjustment layer.本願に開示された超音波探触子は、第1方向に配列されており、電気パルスと超音波との相互の変換を行う複数の振動子を有する振動子アレイと、前記第1方向および前記超音波の送信方向に平行な断面において、前記送信方向に凸状の表面を有し、前記複数の振動子から送信される超音波を集束させる音響レンズと、前記音響レンズと音速が異なる材料で構成さており、前記第1方向に配列された複数の振動子の少なくとも2つと前記音響レンズとの間にそれぞれ配置された少なくとも2つの音響調整層であって、前記少なくとも2つの音響調整層の前記材料および前記送信方向における厚さの少なくとも一方が互いに異なる、少なくとも2つの音響調整層とを備える。
