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 pr ogram may be used as a tool to aid in the design of acoustic lenses, g iving an estimation of the ultrasonic beam characteristics generated b y various types of lenses. Spherical, conical and toroidal lenses were designed and manufactured for a 2.7 MHz transducer with 12.7 mm diame ter face. Theoretical and experimental results are consistent consider ing the effective diameter of the transducer, a concept introduced in this work.