Light guiding fluid conduit having a liquid-filled interspace between inner and outer conduits
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United States of America Patent
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Dec 27, 2011
Grant Date -
Sep 17, 2009
app pub date -
Mar 12, 2009
filing date -
Mar 13, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A fluid conduit comprises an inner conduit configured for conducting a fluid, and an outer conduit circumferentially enclosing the inner conduit. The outer conduit's inner diameter is larger than the inner conduit's outer diameter, with an interspace being formed between the inner conduit's outer surface and the outer conduit's inner surface. The interspace between the inner conduit's outer surface and the outer conduit's inner surface contains an interspace liquid. The inner conduit is configured for guiding light coupled into the inner conduit, and dependent on the light's angle of incidence, total reflection occurs at a boundary between the inner conduit's outer surface and the interspace between the inner conduit and the outer conduit.
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