Aerosol average-density determining system
First Claim
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1. An aerosol average density determining system including a single light source for providing light along plural paths through said aerosol;
- and means for detecting light from said plural paths, said means for detecting includes a respective photosensitive means for each of said paths, said photosensitive means having outputs connected in series.
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Abstract
Light shown through a space containing smoke or an aerosol is detected fromeveral paths through the space. The light may be gathered from physically separated optical fibers feeding a common photodetector, or several physically separated, series-connected photodetectors may be used. The total amount of light reaching the photodetector(s) is directly related to the average density of the smoke or aerosol.
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1 Claim
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1. An aerosol average density determining system including a single light source for providing light along plural paths through said aerosol;
- and means for detecting light from said plural paths, said means for detecting includes a respective photosensitive means for each of said paths, said photosensitive means having outputs connected in series.
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Current AssigneeThe United States Of America As Represented By The Secretary Of The Army
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Original AssigneeThe United States Of America As Represented By The Secretary Of The Army
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InventorsDreitzler, David R., Thorn, Lawrence B.
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Primary Examiner(s)McGraw, Vincent P.
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Application NumberUS05/579,657Time in Patent Office699 DaysField of Search356/201, 356/207, 356/227, 250/575, 250/227US Class Current356/438CPC Class CodesG01N 21/534 by measuring transmission a...
