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US 11,846,619 B2Granted
Hydrogen sulfide imaging system
AssigneeRebellion Photonics, Inc.
InventorsRobert Timothy Kester, Nathan Adrian Hagen
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Abstract
Various embodiments disclosed herein describe an infrared (IR) imaging system for detecting a gas. The imaging system can include an optical filter that selectively passes light having a wavelength in a range of 1585 nm to 1595 nm while attenuating light at wavelengths above 1600 nm and below 1580 nm. The system can include an optical detector array sensitive to light having a wavelength of 1590 that is positioned rear of the optical filter.
Claims11
An infrared (IR) imaging system for detecting methane (CH4) gas, the IR imaging system comprising:
- an optical detector array;
- and
- an optical filter that selectively transfers light within a band of IR wavelengths to the optical detector array,
- wherein, within the band of IR wavelengths, a convolution of the optical filter with an absorption spectrum of CH4 gas is greater than a convolution of the optical filter with an absorption spectrum of hydrogen sulfide (H2S), carbon dioxide (CO2), sulfur dioxide (SO2), or water (H2O), wherein the convolution of the optical filter with the absorption spectrum of CH4 gas is in a range of 50 to 10,000 times greater than the convolution of the optical filter with the absorption spectrum of hydrogen sulfide (H2S).
1 more element
Dependencies are inferred from the claim text.