Device for the excitation of waves and especially ultrasonic wav

Details Device for the excitation of waves and especially ultrasonic wav Device for the excitation of waves and especially ultrasonic wav

1976-12-27

1979-05-01

Corbin, John K.

Measuring and testing

Vibration

By mechanical waves

350189, 350193, G01N 2904, G01N 2132, G02B 304

Patent

active

041517520

ABSTRACT:
The device comprises a lens and a source for emitting a beam of parallel light rays or ultrasonic rays at right angles to a flat dioptric element. The lens surface which is located opposite to the radiation-emitting source is flat and the lens surface located opposite to the dioptric element is such that the refracted rays are incident upon the dioptric element at a constant angle. The wave which is incident upon the dioptric element and corresponds to the beam refracted from the lens and the wave refracted from the dioptric element and corresponding to the incident wave are in phase along a predetermined path on the surface of the dioptric element.

REFERENCES:
patent: 3166731 (1965-01-01), Joy
patent: 3916675 (1975-11-01), Perdijon
patent: 3924453 (1975-12-01), Clark et al.

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