Abstract: An ultrasonic transducer includes a piezoceramic element with a first surface and a second surface opposite to each other through the piezoceramic element and a lateral surface connecting the first surface and the second surface, an acoustic matching layer with a third surface and a fourth surface opposite to each other through the acoustic matching layer and the third surface connecting with the second surface of the piezoceramic element, a first damping element with a fifth surface and a sixth surface opposite to each other through the first damping element and the sixth surface connecting with the first surface of the piezoceramic element, and a second damping element encapsulating the first damping element and the lateral surface of the piezoceramic element.

Abstract: An ultrasonic transducer includes a carrier with a first surface and a second surface which are opposite to each other, a piezoceramic element attached on the first surface of the carrier, a first acoustic matching layer with a third surface and a fourth surface which are opposite to each other, the third surface is attached on the second surface of the carrier, wherein the first acoustic matching layer includes a mesh with openings, and the thickness of first acoustic matching layer is smaller than ¼ wavelength of an ultrasonic wave emitted by the piezoceramic element in the first acoustic matching layer in an operating frequency, and a total area of the openings of mesh is larger than 30% area of the third surface of first acoustic matching layer, and a second acoustic matching layer disposed on the fourth surface of the first acoustic matching layer.

Abstract: An ultrasonic transducer includes a carrier with a first surface and a second surface which are opposite to each other, a piezoceramic element attached on the first surface of the carrier, a first acoustic matching layer with a third surface and a fourth surface which are opposite to each other, the third surface is attached on the second surface of the carrier, wherein the first acoustic matching layer includes a mesh with openings, and the thickness of first acoustic matching layer is smaller than ¼ wavelength of an ultrasonic wave emitted by the piezoceramic element in the first acoustic matching layer in an operating frequency, and a total area of the openings of mesh is larger than 30% area of the third surface of first acoustic matching layer, and a second acoustic matching layer disposed on the fourth surface of the first acoustic matching layer.