Basic considerations of acoustic lenses for ultrasonic transducers

This is a theoretical and experimental work that provides an acoustic lenses' computer simulation program for ultrasonic transducers. The program may be used as a tool to aid in the design of acoustic lenses, giving an estimation of the ultrasonic beam characteristics generated by various types of lenses. Spherical, conical and toroidal lenses were designed and manufactured for a 2.7 MHz transducer with 12.7 mm diameter face. Theoretical and experimental results are consistent considering the effective diameter of the transducer, a concept introduced in this work.