Radiant energy – Infrared-to-visible imaging
Patent
1980-12-29
1983-06-28
Smith, Alfred E.
Radiant energy
Infrared-to-visible imaging
250334, 250339, H01J 3149, G01J 100
Patent
active
043907857
ABSTRACT:
Presence and location of infrared radiation-absorbing or emitting gases in the atmosphere can be ascertained by means of an infrared imaging-analyzing means which views a given scene and receives infrared radiation therefrom. Analytic and reference beams are produced, the latter having reduced sensitivity to the gas of interest, and are converted to electric signals, which are processed in real time to provide a signal corresponding to their ratio. This ratio signal is further processed to generate an image, which can be displayed and viewed. This technique is particularly suitable for surveying large areas for seepage of methane or other hydrocarbon gases from underground gas and/or oil deposits.
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D. I. Sebacher, Airborne Nondispersive Infrared Monitor for Atmospheric Trace Gases, Rev. Sci. Instrum. 49(11), pp. 1520-1525, 1978.
Faulhaber Mark E.
Prober James M.
E. I. Du Pont de Nemours & Co.
Howell Janice A.
Smith Alfred E.
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