Radiant energy – Infrared-to-visible imaging – Including means for scanning field of view
Patent
1983-04-05
1985-11-26
Smith, Alfred E.
Radiant energy
Infrared-to-visible imaging
Including means for scanning field of view
250338, 250330, G01N 2135
Patent
active
045556270
ABSTRACT:
A video imaging system for detecting hazardous gas leaks. Visual displays of invisible gas clouds are produced by radiation augmentation of the field of view of an imaging device by radiation corresponding to an absorption line of the gas to be detected. The field of view of an imager is irradiated by a laser. The imager receives both backscattered laser light and background radiation. When a detectable gas is present, the backscattered laser light is highly attenuated, producing a region of contrast or shadow on the image. A flying spot imaging system is utilized to synchronously irradiate and scan the area to lower laser power requirements. The imager signal is processed to produce a video display.
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Koopman et al., "Description and Analysis of Burro Series 40-m.sup.3 LNG Spill Experiments", UCRL-53186, Lawrence Livermore Lab., 8-14-81, 35 pages.
Carnahan L. E.
Fields Carolyn E.
Hightower Judson R.
Sartorio Henry P.
Smith Alfred E.
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