Measuring and testing – Vibration – By mechanical waves
Patent
1982-12-28
1985-04-16
Birmiel, Howard A.
Measuring and testing
Vibration
By mechanical waves
73619, 73621, 73626, 73642, G01N 2904
Patent
active
045108102
ABSTRACT:
An ultrasonic microscope displays an ultrasonic wave image of a sample relatively and two-dimensionally scanned with respect to an ultrasonic wave beam transmitted from and focused by a transducer including a piezoelectric element and an acoustic lens. The F number of the acoustic lens is variably changeable while the scan in one direction of the two-dimensional scan is substituted by a time axis scan of the received echo.
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Ishikawa Isao
Kanda Hiroshi
Birmiel Howard A.
Hitachi , Ltd.
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