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US 12,000,774 B2Granted
Gas analyzer
AssigneeThermo Environmental Instruments Inc.
InventorsYongquan Li, Brian Chia, Robert Bailey
Life of this patent
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Abstract
An embodiment of a gas analyzer is described that comprises a light source configured to produce a substantially collimated first beam with a diverging angle of less than about 15 degrees; a gas cell comprising an inlet configured to introduce a gas into the gas cell, an outlet configured to remove the gas from the gas cell, and a plurality of mirrors configured to reflect the substantially collimated first beam within the gas cell; and a detector configured to generate a signal in response to the substantially collimated first beam.
Claims16
A gas analyzer, comprising:
- an LED light source attached to a board and configured to produce a substantially collimated first beam with a first level of energy and a small diverging angle, and a second beam comprising a second level of energy that is different from the first level of energy;
- a reference sensor mounted to the board adjacent to the LED light source, wherein the reference sensor detects the second level of energy of the second beam;
- a processing system configured to compensate for variation in the level of energy of the substantially collimated first beam using the detected level of energy of the second beam, wherein the variation of the first and second energy levels is substantially equal and associated with temperature fluctuation of the LED light source;
- a gas cell comprising an inlet configured to introduce a gas into the gas cell, an outlet configured to remove the gas from the gas cell, a first lens, a plurality of mirrors configured to reflect the substantially collimated first beam within the gas cell, and a second lens;
- and
- a detector configured to generate a signal in response to the substantially collimated first beam.
3 more elements
Dependencies are inferred from the claim text.