Piezoelectric ultrasonic scanning head using a beryllium mirror
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United States of America Patent
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-
Jun 17, 1980
Grant Date -
N/A
app pub date -
Jan 18, 1979
filing date -
Jan 18, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A beam of ultrasonic energy is scanned through the use of a steerable mirror positioned in a liquid path traversed by the beam between a transmit-receive crystal and the target. The mirror is comprised of a material selected to have an angle of excitation of surface waves at the liquid-mirror interface which lies outside the range of angles of transmission and reception incidence at which the beam impinges on the mirror.
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