ULTRASONIC TRANSMITTER/RECEIVER, PROCESS FOR PRODUCING THE SAME, AND ULTRASONIC FLOWMETER

摘要

An ultrasonic transducer according to the present invention includes a piezoelectric body 2 for transmitting and receiving an ultrasonic wave and acoustic matching layers 3a and 3b made of a dry gel. The acoustic matching layers 3a and 3b are multiple dry gel layers with mutually different acoustic impedances. <IMAGE>