Oscillators – Relaxation oscillators
Patent
1978-12-28
1980-10-21
Sikes, William L.
Oscillators
Relaxation oscillators
331 945M, G02F 111
Patent
active
042290783
ABSTRACT:
The hydro-optical modulator has a purged and hermetically sealed thin liq cell with a working liquid throughout an enclosed sealed container that is in working contact with a pressure modulating system. The thin liquid cell is preferably a thin circular cell having windows on each side thereof where the optical radiation being modulated easily passes through the windows but is transmitted according to the size of bubbles in the working fluid. The size of the bubbles, and therefore the amount of optical radiation transmitted, is controlled by the pressure modulating system whereby smaller bubbles allow transmission while large bubbles scatter and limit transmission of optical radiation in an AC sensitive viewing device.
REFERENCES:
patent: 3371978 (1968-03-01), Matovich
patent: 3706149 (1972-12-01), Olivieri
Bly Vincent T.
Depersia Anthony T.
Edelberg Nathan
Gibson Robert P.
Harwell Max L.
Sikes William L.
The United States of America as represented by the Secretary of
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