| 摘要 |
<P>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. <P>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 Poisson's ratios. <P>COPYRIGHT: (C)2012,JPO&INPIT |
