Measuring and testing – Vibration – By mechanical waves
Patent
1991-07-09
1993-07-06
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73620, 73642, G01N 2906, G01N 2924
Patent
active
052243826
ABSTRACT:
A scanning acoustic microscope of the present invention comprises a high frequency transmitter for transmitting high frequency signal, first electric/ acoustic conversion element for converting the high frequency signal to ultrasound, acoustic lens having an end surface to which the ultrasound is incident and a concave lens surface to which the incident ultrasound is exited, an ultrasound receiver having a flat receiving surface located in an opposed relation to the concave lens surface to allow the transmission of only that ultrasound substantially vertically incident to the receiving surface, second electric/acoustic conversion element for converting ultrasound which has been transmitted through the ultrasound receiver to an electric signal, and an image processing circuit for preparing an image in accordance with a reception signal delivered from the second electric/acoustic conversion element.
REFERENCES:
patent: 4367648 (1983-01-01), Sinclair et al.
patent: 4972715 (1990-11-01), Ohno
patent: 5085081 (1992-02-01), Ohno
Acoustic Microscopy with Mechanical Scanning-A Review; Proceedings of the IEEE, vol. 67, No. 8, Aug. 1979; pp. 1092-1114.
Finley Rose M.
Olympus Optical Co,. Ltd.
Williams Hezron E.
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