Ultrasonic transducer

摘要

PCT No. PCT/JP90/01374 Sec. 371 Date Sep. 26, 1991 Sec. 102(e) Date Sep. 26, 1991 PCT Filed Oct. 25, 1990 PCT Pub. No. WO91/13588 PCT Pub. Date Sep. 19, 1991.The present invention relates to an ultrasonic transducer for controlling an ultrasonic beam with the vibrators arranged and particularly to an ultrasonic transducer having improved the ultrasonic beam characteristic in the short axis direction in order to realize a high image quality ultrasonic diagnostic apparatus. The present invention is aimed at improving the ultrasonic beam characteristic and therefore the present invention discloses an ultrasonic transducer for controlling ultrasonic beam using many vibrators arranged in the form of an array in which a composite piezoelectric element (1) is used as an electric-acoustic conversion element of the vibrator and the electrode (2) divided in the short axis direction orthogonally crossing the arrangement direction of many vibrators is also provided on the composite piezoelectric vibrator (1).