Tuned dynamic eigen spectroscopy systems
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United States of America Patent
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Jan 6, 2015
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N/A
app pub date -
Jul 27, 2012
filing date -
Jul 28, 2011
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Abstract
An apparatus for detecting gas concentrations includes a coded filter to oscillate proximate a resonant frequency. A photo detector is positioned below the coded filter such that the coded filter selectively blocks light that is directed at the photo detector. Optics are positioned to project spectral information on to the coded filter. A processor analyzes a signal received from the photo detector. The processor is adapted to weight a harmonic attic signal.
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