Ultrasonic transducer
First Claim
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1. An ultrasonic transducer comprising:
- a support body;
a piezoelectric vibrator body attached to said support body, said vibrator body being made of a material having a high dielectric constant and a high acoustic impedance;
a first matching layer at least indirectly attached to said vibrator body, said first matching layer consisting of silicon; and
a second matching layer at least indirectly attached to said first matching layer on a side thereof opposite said vibrator body;
said first and second matching layers being provided for acoustic matching of said piezoelectric vibrator to a medium contacting said second layer, said medium being selected from a group consisting of water and body tissue.
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Abstract
An ultrasonic transducer comprises a support body, a piezoelectric layer of a material with a relatively high dielectric constant and high acoustic impedance, a first impedance matching layer and a second impedance matching layer (10). The first matching layer consists of silicon.
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Citations
25 Claims
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1. An ultrasonic transducer comprising:
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a support body; a piezoelectric vibrator body attached to said support body, said vibrator body being made of a material having a high dielectric constant and a high acoustic impedance; a first matching layer at least indirectly attached to said vibrator body, said first matching layer consisting of silicon; and a second matching layer at least indirectly attached to said first matching layer on a side thereof opposite said vibrator body; said first and second matching layers being provided for acoustic matching of said piezoelectric vibrator to a medium contacting said second layer, said medium being selected from a group consisting of water and body tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An ultrasonic transducer system comprising:
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a support body; a multiplicity of piezoelectric vibrator bodies attached to said support body, said vibrator bodies being made of a material having a high dielectric constant and a high acoustic impedance; first means at least indirectly attached to said vibrator bodies for performing an impedance matching function, said first means including at least one layer of silicon; and second means at least indirectly attached to said first means on a side thereof opposite said vibrator bodies for also performing an impedance matching function. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification