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US 4,544,859 AGranted
Non-bonded piezoelectric ultrasonic transducer
AssigneeThe United States of America as represented by the United States Department of Energy
InventorJames M. Eoff
Life of this patent
Estimating the term…
Abstract
A mechanically assembled non-bonded ultrasonic transducer includes a substrate, a piezoelectric film, a wetting agent, a thin metal electrode, and a lens held in intimate contact by a mechanical clamp. No epoxy or glue is used in the assembly of this device.
Claims20
A mechanically assembled non-bonded ultrasonic transducer comprising:
- a substrate having a polished, electrically conductive, end surface;
- a piezoelectric film having first and second opposed sides, said first side being in contact with, but not adhered to, said surface;
- a first wetting agent covering said second side of said film;
- a thin metal electrode having first and second opposed sides, said first side being in contact with, but not adhered to, said second side of said film through said first wetting agent;
- a second wetting agent covering said second side of said electrode;
- and
- a lens assembly comprising:
- a lens having a polished first surface in contact with said second side of said electrode through said second wetting agent and
- clamp means for mechanically clamping said lens against said electrode, said electrode against said film and said film against said substrate.
6 more elements
A mechanically assembled ultrasonic transducer comprising:
- a substrate having a polished end surface;
- a piezoelectric film having first and second opposed sides, said first side being in contact with, but not adhered to, said surface;
- a wetting agent covering said second side of said film;
- and
- a lens assembly comprising:
- a lens having a polished first surface;
- a thin metal electrode bonded to said polished first surface;
- clamp means for mechanically clamping said electrode against said second side of said film through said wetting agent and said film against said substrate.
5 more elements
Dependencies are inferred from the claim text.