Optics: measuring and testing – By polarized light examination – With birefringent element
Patent
1979-12-27
1982-01-19
Corbin, John K.
Optics: measuring and testing
By polarized light examination
With birefringent element
73655, G01N 2141
Patent
active
043113915
ABSTRACT:
A fiber optic sonar system wherein first and second optical fibers are wound on a common mandrel and provided with a light energy beam. An acoustic signal differentially varies the index of refraction of the optical fibers to result in an interference pattern dependent upon the frequency of the received acoustic signal or signals. The apparatus is operable to form one or more hollow conical receiver beams.
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Corbin John K.
Koren Matthew W.
Schron D.
Westinghouse Electric Corp.
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