Acoustic matching layer, ultrasonic transducer and...

Details Acoustic matching layer, ultrasonic transducer and... Acoustic matching layer, ultrasonic transducer and...

2006-01-24

2006-01-24

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

06989625

ABSTRACT:
An acoustic matching layer1according to the present invention includes a first acoustic matching layer2, which has a low density and a low sonic velocity, and a second acoustic matching layer3, which has a higher density and a higher sonic velocity. The first acoustic matching layer2, of which the acoustic impedance is matched to that of a medium into an ultrasonic wave is radiated, is provided closer to the medium, while the second acoustic matching layer3is provided closer to a piezoelectric layer, thereby increasing the sensitivity of an ultrasonic transducer.

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