Systems for detecting a chemical species and use thereof
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United States of America Patent
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Sep 20, 2016
Grant Date -
Dec 24, 2015
app pub date -
Jun 1, 2015
filing date -
Jun 23, 2014
priority date (Note) -
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Abstract
Systems and methods for detecting chemical species including a lens, a beam splitter, first and second bandpass filters, and first and second electromagnetic radiation detectors. The first bandpass filter has a first transmittance window having a first width transmitting greater than 50% of the filtered first electromagnetic radiation beam within a first electromagnetic radiation wavelength range. The second bandpass filter includes a second transmittance window having a second width within a second electromagnetic radiation wavelength range. The second transmittance window has an upper limit wavelength value that is greater than an upper limit wavelength value of the first transmittance window. The second bandpass filter is configured to transmit a lesser percentage of the second electromagnetic radiation beam passing through the second transmittance window than the first bandpass filter transmits of the first electromagnetic radiation beam passing through the first transmittance window.
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