Optical devices for fluid sensing and methods therefor
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United States of America Patent
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Dec 26, 2017
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Nov 20, 2015
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Jun 7, 2011
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Abstract
An optical spectral sensing device for determining at least one property of a fluid. The device has an elongated porous body, a first end and a second end, a solid-state optical emitter at the first end of the body oriented to emit radiation toward the second end of the body, and a solid-state optical detector at the second end of the body oriented to detect radiation emitted by the optical emitter and to output a signal responsive to absorption of radiation. The device is configured to determine depth of a fluid based on the signal output by the optical detector.
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