PROBLEM TO BE SOLVED: To enhance sensitivity and resolution of an ultrasonic image by reducing the attenuation and unnecessary multiple reflections of ultrasonic waves.SOLUTION: An ultrasonic probe 10 includes: an oscillator 1 which transmits and receives ultrasonic waves to and from a subject； and an acoustic lens 4 which is an ultrasonic propagation section provided on a subject side of the oscillator 1. The acoustic lens 4 has an acoustic impedance different from that of the subject and has an uneven part 4a on at least one of its subject-side surface and its oscillator 1-side surface.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】超音波の減衰及び不要な多重反射を小さくし、超音波画像の高感度化及び高分解能化を実現することである。【解決手段】超音波探触子１０は、超音波を被検体へ送受信する振動子１と、振動子１の被検体側に設けられた超音波伝搬部としての音響レンズ４と、を備える。音響レンズ４は、被検体と異なる音響インピーダンスを有し、かつ被検体側の表面及び振動子１側の表面の少なくとも一方に凹凸部４ａを備える。【選択図】図３
