| 摘要 |
PURPOSE:To provide an ultrasonic probe which can find a plurality of elastic properties with high accuracy in a short time and has higher sensitivity. CONSTITUTION:In a conical convergent ultrasonic probe constituted by independently forming three circular and concentric annular piezoelectric transducers directly on a concave lens provided on the object-side end face of an acoustic lens, the central circular piezoelectric transducer (first piezoelectric transducer) 7 and concentric annular piezoelectric transducer (second piezoelectric transducer) 8 adjacent to the first transducer 7 are formed on a concave lens area having the same radius of curvature r1. The concentric annular piezoelectric transducer (third piezoelectric transducer) 9 adjacent to the second transducer 8 is formed in a concave lens area having a radius of curvature r2 which is smaller than the r1. |
