PROBLEM TO BE SOLVED: To provide an ultrasonic wave probe capable of improving a sensitivity deterioration of a specific frequency observed in frequency characteristics and directional characteristics.SOLUTION: The ultrasonic wave probe comprises: an ultrasonic wave transducer and a plurality of acoustic matching layers 20 arranged to overlap one another in a radiation direction of an ultrasonic wave radiated from the ultrasonic wave transducer. The plurality of acoustic matching layers 20 are formed like films. Adjacent longitudinal wave acoustic impedances are almost the same and have mutually different Poissons ratios.COPYRIGHT: (C)2012,JPO&INPIT【課題】周波数特性や指向特性に見られる特異的な周波数の感度劣化を改善することが可能な超音波ブローブを提供する。【解決手段】超音波振動子と、超音波振動子から放射される超音波の放射方向に重ねて配置される複数の音響整合層20とを有し、複数の音響整合層20はフィルム状に形成され、隣接する縦波音響インピーダンスは略同一で互いに異なるポアソン比を有する。【選択図】図1
