AN ULTRASOUND PHASE-CONTROL FOCUSING TRANSDUCER BASED ON SPHERICAL LENS

摘要

An ultrasound transducer that comprises a circular piezoelectric ceramic on which there is bonded a spherical lens made of metal materials or alloy materials such as alumina or copper. The spherical lens is bonded with the piezoelectric ceramic through a bonding layer. Because the spherical lens could make sound wave emanative, and the ultrasound wave emitted from the piezoelectric ceramic could be focused by controling a driving signal, an integrated ultrasound (phase-control) focusing transducer could be made up of.