Ultrasonic transducer array: AL123 and AL412 and HI715, etc

Acoustic lens: an acoustic element that focuses or diverges sound waves.
Matching layer: The main function is to effectively enter the body with the ultrasound of crystal radiation to realize the examination of human tissues. Acoustic impedance matching between transducer and human body.
Array element: The main function is to convert electrical signals into ultrasonic waves in the transmission, and ultrasonic waves into electrical signals in the reception.
Backing: the function is to absorb the backside radiation of the crystal ultrasound, reduce or eliminate the interference caused by multiple ultrasonic reflection between the two ends of the crystal; The crystal damping is increased to narrow the transmitted pulse and improve the resolution.