Apparatus for focusing and collimating ultrasonic waves

Details Apparatus for focusing and collimating ultrasonic waves Apparatus for focusing and collimating ultrasonic waves

1973-08-06

1976-01-27

Queisser, Richard C.

Measuring and testing

Moisture content or absorption characteristic of material

310 87, G01N 2904

Patent

active

039344606

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.

REFERENCES:
patent: 3299696 (1967-01-01), Dickenson
patent: 3302044 (1967-01-01), Lynnworth et al.
patent: 3309655 (1967-03-01), Von Ardenne
patent: 3387604 (1968-06-01), Erikson
patent: 3663842 (1972-05-01), Miller
patent: 3741004 (1973-06-01), Posakony
patent: 3815409 (1974-06-01), Macouski

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