Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-03-16
1991-05-21
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250574, H01J 516
Patent
active
050177753
ABSTRACT:
An optical apparatus which includes an optical waveguide with an unattached end and a control and evaluation circuit for detecting a cavitation signal caused by the accumulation of cavitation bubbles at the unattached end is used to detect cavitation bubbles such as occur when shock waves pass through liquids.
REFERENCES:
patent: 3564264 (1971-02-01), Karuhn et al.
patent: 4659218 (1987-04-01), de Lasa et al.
Granz Bernd
Holzapfel Ralf
Niewisch Joachim
Nelms David C.
Shami K.
Siemens Aktiengesellschaft
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