Ultrasonic transducer

An ultrasonic transducer, comprising:

• a barrel-shaped carrier with a first surface and a second surface opposite to said first surface across said barrel-shaped carrier;
• a piezoceramic element attached on said first surface of said barrel-shaped carrier and disposed in said barrel-shaped carrier;
• a first acoustic matching layer with a third surface and a fourth surface opposite to said third surface across said first acoustic matching layer, wherein said third surface is attached on said second surface of said barrel-shaped carrier, and said first acoustic matching layer comprises a mesh with openings, and a thickness of said first acoustic matching layer is smaller than ¼ wavelength of an ultrasonic wave emitted by said piezoceramic element in said first acoustic matching layer in an operating frequency of said ultrasonic transducer, and a total area of said openings of said mesh is larger than 30% area of said third surface of said first acoustic matching layer;
• a second acoustic matching layer disposed on said fourth surface of said first acoustic matching layer, and said first acoustic matching layer and said second acoustic matching layer are disposed outside said barrel-shaped carrier;
• and
• a first damping element disposed in said barrel-shaped carrier and encapsulating said piezoceramic element and a second damping element encapsulating said first damping element and said barrel-shaped carrier.