Ultrasonic probe using rear-side acoustic matching layer

摘要

The present invention relates to an ultrasonic probe and provides the ultrasonic probe in which acoustic matching layers are formed on both sides of a piezoelectric ceramic capable of simultaneously increasing the signal strength of ultrasonic waves and improving the waveform characteristics of the ultrasonic waves. According to the present invention, a rear-side acoustic matching layer is formed in the upper part of a rear-side block. The piezoelectric ceramic is formed in the upper part of the rear-side acoustic matching layer. A front-side acoustic matching layer is formed in the upper part of the piezoelectric ceramic. Further, an acoustic lens is formed in the upper part of the front-side acoustic matching layer. Particularly, the rear-side acoustic matching layer reflects, toward the acoustic lens, the ultrasonic waves which are propagated to the rear-side block.

主权项

1. An ultrasonic probe comprising:
a rear block; a rear acoustic matching layer formed on an upper side of the rear block; a front acoustic matching layer formed on an upper side of the rear acoustic matching layer; a piezoelectric ceramic formed between the rear and front acoustic matching layers to generate first ultrasonic waves propagated toward the front acoustic matching layer and second ultrasonic waves propagated toward the rear acoustic matching layer; and an acoustic lens formed on an upper side of the front acoustic matching layer, wherein the first ultrasonic waves are configured to be acoustically matched with third ultrasonic waves which result from the second ultrasonic waves reflected by the rear acoustic matching layer to improve signal strength and waveform characteristics.