Refractive stigmatic system for elastic surface waves

Details Refractive stigmatic system for elastic surface waves Refractive stigmatic system for elastic surface waves

1977-07-07

1980-03-18

Tomsky, Stephen J.

Acoustics

Sound-modifying means

Lens

333150, 367150, G10K 1100

Patent

active

041934733

ABSTRACT:
The present invention relates to refractive stigmatic systems designed to deflect or focus elastic surface waves which can propagate at the surface of a substrate. The object of the invention is a lens or prism comprising an array of elementary refractive zones formed by deposition or ion implantation and intended to produce uniform attenuation of refracted vibrational radiation.

REFERENCES:
patent: 2684724 (1954-07-01), Hock
patent: 3654574 (1972-04-01), Dias
patent: 3797915 (1974-03-01), Lard et al.
patent: 3818379 (1974-06-01), Wauk
patent: 3826562 (1974-07-01), Baumgardner et al.
patent: 3866711 (1975-02-01), Folds
patent: 3903990 (1975-09-01), Tannaka
"Sound Focussing Lenses and Wave Guides," by T. Tarnoczny, Ultra Sonics, Jul.-Sep. 1965, pp. 115-127.

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