Apparatus for focusing and collimating ultrasonic waves
US3934460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1973 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Aug 6, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus employing ultrasonic waves includes an ultrasonic transducer to which a solid buffer rod is attached. The ultrasonic waves are focused by liquid-filled lenses placed between the transducer and buffer rod. The ultrasonic waves are collimated by either employing a buffer rod with a spherical tip or using a plurality of liquid-filled lenses appropriately arranged. The buffer rod may be constructed of polystyrene or aluminum and the liquid-filled lenses may be constructed of glycerin or mercury, respectively. An alternative form of the invention includes a liquid-filled buffer rod and focusing and collimating means of solid materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.