Ultrasonic probe having backing material layer of uneven thickne

Details Ultrasonic probe having backing material layer of uneven thickne Ultrasonic probe having backing material layer of uneven thickne

1990-06-19

1993-05-18

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367152, 367157, 310335, H04R 1700

Patent

active

052126714

ABSTRACT:
An ultrasonic probe includes a piezoelectric material layer having a pair of electrodes provided on both main surfaces thereof for applying voltage thereto, and a backing material provided on one electrode. The backing material has an acoustic impedance lower than that of the piezoelectric material layer. Interposed between the backing material and one electrode is an acoustic reflecting material layer which has a thick first portion and a thin second portion. The second portion may have a substantially zero thickness to allow the backing material to be in partial contact with one electrode. Thereby, the ultrasonic probe can transmit and receive ultrasonic waves at its resonance frequencies. Also provided is an ultrasonic diagnostic apparatus which displays an image resultant from combining images having the frequencies obtained by driving the ultrasonic probe.

REFERENCES:
patent: 3703652 (1972-11-01), Noda
patent: 3948350 (1976-04-01), Erickson
patent: 3982142 (1976-09-01), Goble
patent: 4795935 (1989-01-01), Fujii et al.
patent: 4870972 (1989-10-01), Maerfield et al.
An extract from Dialog Filed regarding Japanese Patent Laid-Open Publication Nos. 172600/1988, 68000/1987, 73861/1983.
European Search Report dated Jan. 21, 1991 "Design Method and Experimental Result of a Matched Piezoelectric Transducer" by S. Grinderslev, pp. 79-86 vol. 53, No. 2, Jun. 1983, Stuttgart DE.
"New Method of Time Domain Analysis of the Performance of Multilayered Ultrasonic Transducers" from IEEE Transactions vol. UFFC-33, No. 6, Nov. 1986.

Affiliated with

Also associated with

Rating

Ultrasonic probe having backing material layer of uneven thickne does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ultrasonic probe having backing material layer of uneven thickne, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic probe having backing material layer of uneven thickne will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-808943