PROBLEM TO BE SOLVED: To provide an ultrasound probe and an ultrasound diagnostic apparatus capable of varying and adjusting the imaging range in a more simplified configuration without sacrificing the ease of use.SOLUTION: The ultrasound probe comprises: a plurality of transceiver units； an acoustic lens； and a switch unit for switching the transceiver units between enabled and disabled states. The transceiver units include a second transceiver unit 212 located in the center, and a first transceiver unit 211 and a third transceiver unit 213 symmetrically located on either side of the second transceiver unit. The acoustic lens 22 includes a first lens unit 22a, a second lens unit 22b, and a third lens unit 22c respectively corresponding to the first, second, and third transceiver units. When the ultrasound travels in a straight line, the switch unit causes the second transceiver unit alone or all of the first, second, and third transceiver units to be enabled； when the traveling direction of the ultrasound is to be deflected, the switch unit causes the first or third transceiver unit to be enabled. The first and third lens units are aspherically shaped.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2017,JPO&INPIT【課題】より容易な構成で使い勝手を低下させずに撮像範囲を変化調整することが可能な超音波探触子及び超音波診断装置を提供する。【解決手段】複数の送受信部と、音響レンズと、送受信部の動作、非動作を切り替えるスイッチ部と、を備え、送受信部は、中央に位置する第２の送受信部２１２、第２の送受信部の両側に対称的に配置される第１の送受信部２１１及び第３の送受信部２１３を有し、音響レンズ２２は、第１の送受信部、第２の送受信部及び第３の送受信部のそれぞれに対応する第１レンズ部２２ａ、第２レンズ部２２ｂ及び第３レンズ部２２ｃを有し、スイッチ部は、超音波の進行方向が直進である場合に、第２の送受信部を単独で、又は第１の送受信部、第２の送受信部及び第３の送受信部の全部を動作させる一方、超音波の進行方向を偏向する場合に、第１の送受信部又は第３の送受信部を動作させ、第１レンズ部及び第３レンズ部は、非球面形状を有する。【選択図】図７
