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Optical system for a gas measurement system

  • US 20040256560A1
  • Filed: 03/03/2004
  • Published: 12/23/2004
  • Est. Priority Date: 03/07/2003
  • Status: Active Grant
First Claim
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1. A system adapted to analyze a concentration of a selected gas in a gas sample, the system comprising:

  • a source adapted to emit radiation of a specified intensity and wavelength along an optical path such that the radiation is absorbed by the selected gas in the gas sample being analyzed;

    an infrared radiation detector disposed along the optical path in optical communication with the source and adapted to detect an intensity of the emitted radiation by the source after the radiation has passed through the gas sample; and

    a sample cell adapted to be disposed between the source and infrared radiation detector, wherein the sample cell includes a gas flow passage defined that intersects the optical path, and wherein at least a portion of a wall defining the optical path includes an infrared reflective surface so as to direct rays of radiation from the source to the infrared radiation detector generally along the optical path.

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