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EP 0033751 B1 19830622 - ULTRASONIC TRANSDUCER USING ULTRA HIGH FREQUENCY

Title (en)

ULTRASONIC TRANSDUCER USING ULTRA HIGH FREQUENCY

Publication

EP 0033751 B1 19830622 (EN)

Application

EP 80100662 A 19800208

Priority

EP 80100662 A 19800208

Abstract (en)

[origin: EP0033751A1] An ultrasonic transducer comprises an acoustic wave propagation medium (150), a piezoelectric element (145) mounted on a surface of the propagation medium (150), and an ultrasonic lens (155) formed in the opposite surface of the progagation medium (150) and having a predetermined focal distance. The ultrasonic radiation generated from the piezoelectric element (145) is propagated through the propagation medium (150) and focused by the lens (155). The axial length of the propagation medium is selected to be 1/N (N: odd number) of a Fresnel focal distance.

IPC 1-7

G10K 11/30

IPC 8 full level

G10K 11/30 (2006.01)

CPC (source: EP)

G10K 11/30 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0033751 A1 19810819; EP 0033751 B1 19830622; DE 3063803 D1 19830728

DOCDB simple family (application)

EP 80100662 A 19800208; DE 3063803 T 19800208