Damping device for focused piezoelectric transducer

Details Damping device for focused piezoelectric transducer Damping device for focused piezoelectric transducer

1984-06-29

1986-08-26

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

73642, 310326, H01L 4108

Patent

active

046085076

ABSTRACT:
An ultrasonic detection apparatus having a transducer, a lens, and a damping ring, the damping ring being made of a material which is impedance-matched to the lens but which has a lower speed of sound so that stray noise in the lens travels into the damping ring and dissipates rather than remaining in the lens and reflecting back to the transducer as noise.

REFERENCES:
patent: 4011473 (1977-03-01), Massa
patent: 4044273 (1977-08-01), Kanda et al.
patent: 4112773 (1978-09-01), Abts
patent: 4214484 (1980-07-01), Abts
patent: 4316115 (1982-02-01), Wilson et al.
patent: 4321696 (1982-03-01), Kanda
patent: 4365515 (1982-12-01), Abts
patent: 4455873 (1984-06-01), Abts

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