Measuring and testing – Volumetric content measuring
Patent
1976-02-03
1977-03-08
Woodiel, Donald O.
Measuring and testing
Volumetric content measuring
73 88A, G01L 124
Patent
active
040106322
ABSTRACT:
A piezooptical measuring transducer comprises two light sources connected to a square-pulse generator so that the luminous fluxes of each light source pass alternately through a polarizer common for both fluxes, phase-shifting plates individual for each flux, an elastic element common for both fluxes, sensitive to variations of mechanical stresses therein caused by changes in the measurand, an analyzer common for both fluxes, all placed in that order downstream of the light sources across the fluxes, the latter being alternately incident upon a photocell. The phase-shifting plates are oriented so that their axes of maximum velocity of light propagation are perpendicular to each other.
REFERENCES:
patent: 3039298 (1962-06-01), Zandman
patent: 3950987 (1976-04-01), Slezinger et al.
Belitsky Georgy Mironovich
Mironov Jury Vasilievich
Shiryaev Vladimir Alexandrovich
Slezinger Isaak Isaevich
Gorenstein Charles
Woodiel Donald O.
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