SPECTROSCOPIC SYSTEMS AND METHODS
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United States of America Patent
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Issued Date -
Sep 11, 2014
app pub date -
Mar 7, 2013
filing date -
Mar 7, 2013
priority date (Note) -
Abandoned
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Abstract
The present invention provides a spectroscopic system having a first tunable filter module, a second tunable filter module, an optical detector and a signal processing unit. The first tunable filter module includes a first tunable filter and corresponding control unit. The second tunable filter module includes a second tunable filter and corresponding control unit. The second tunable filter is configured in series with the first tunable filter, and the second tunable filter is selected so that the free spectral range of the second tunable filter matches the half-peak width of the first tunable filter. The optical detector is configured to receive wide wavelength bands of electromagnetic radiation transmitted through the first tunable filter and the second tunable filter and to generate one or more electrical signals indicative of electromagnetic radiation intensity as a function of wavelength.
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