Optical liquid level detection sensor and liquid overfill prevention system comprising such sensor
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United States of America Patent
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Jan 16, 2018
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app pub date -
Jan 30, 2014
filing date -
Jan 30, 2013
priority date (Note) -
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Abstract
An optical liquid level detection sensor includes a light source for emitting a light beam, a liquid contact surface, and a light detector, where the light source is arranged to emit a light beam towards the liquid contact surface, which liquid contact surface reflects or transmits the light beam in dependence of liquid being present on the liquid contact surface, where the light detector is arranged to receive the light beam after reflection on the liquid contact surface, where the sensor includes an at least partially transparent ring element, and where the liquid contact surface is formed by an outer surface of the ring element.
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