Acoustic lens arrangement
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United States of America Patent
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-
Oct 18, 1988
Grant Date -
N/A
app pub date -
Jun 24, 1986
filing date -
Jun 24, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An acoustic lens arrangement having at least one transducer for the generation and/or for the reception of a plane acoustic wavefield. The arrangement includes a focusing surface for focusing the acoustic wavefield in an object region and at least one medium for the low-loss transmission of the acoustic wavefield between a transducer, the focusing surface and the object region to be investigated. The longitudinal axis of the focusing surface is inclined relative to the direction of the normal to the acoustic wavefield in such a manner that when the longitudinal axis is positioned normal to the surface of the object region, the acoustic beams incident thereon form a critical angle .theta..sub.R with the normal to the surface of the object.
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