Optical filter
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United States of America Patent
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Sep 22, 2020
Grant Date -
Jan 11, 2018
app pub date -
Dec 3, 2015
filing date -
Dec 17, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A device. At least some example embodiments are a device including a filter element configured to receive optical energy from a first optical fiber. The filter element is reflective in a preselected band of optical wavelengths. A first lens is configured to receive optical energy transmitted through the filter element. A shell is disposed about the optical filter and the first lens; surfaces of the first lens, the filter element and the shell form a first boundary portion of an internal volume of an interior of the shell. A fluid is sealably disposed within the internal volume.
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