Anti-reflective acoustic wavefront refraction element

Details Anti-reflective acoustic wavefront refraction element Anti-reflective acoustic wavefront refraction element

1978-04-06

1980-04-15

Tomsky, Stephen J.

Acoustics

Sound-modifying means

Lens

367150, G10K 1100, G10K 1106, G01S 380

Patent

active

041979214

ABSTRACT:
The fabrication of ultrasonic-wave lenses and prisms using low-surface tension (poor adhesion) polyalkene sheet (such as polyethylene) as an impedance-matching quarter-wave anti-reflective layer is made possible by the use of certain very low surface-tension cements.

REFERENCES:
patent: 3618696 (1971-11-01), Hurwitz
patent: 3687219 (1972-08-01), Langlois
patent: 3866711 (1975-02-01), Folds
patent: 3903498 (1975-09-01), Jacobs et al.
patent: 3913061 (1975-10-01), Green

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