Radiant energy – Infrared-to-visible imaging
Patent
1994-04-15
1995-07-04
Hannaher, Constantine
Radiant energy
Infrared-to-visible imaging
2503385, G01N 2135
Patent
active
054302935
ABSTRACT:
A gas visualizing apparatus includes an image sensor for detecting infrared light radiated or reflected from a background of a gas leak monitoring territory A, a laser source for emitting a detection infrared beam in two-dimensional form toward the gas leak monitoring territory A, the detection infrared beam having a wavelength absorbable by a gas "g" to be detected and a CRT for displaying information relating to gas leakage as a two-dimensional visible image corresponding to the gas leak monitoring territory A. The laser source includes a beam expander for converging or diverging the detection infrared beam to vary an area of the gas leak monitoring territory A. The image sensor includes a transmission and width varying device for setting the infrared light entering the image sensor to a band substantially centering on the wavelength of the detection infrared beam, and varying a width of the band, to realize an excellent visible image.
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Kanagawa Toshihide
Nishio Takeshi
Sato Tominori
Sumida Koichi
Glick Edward J.
Hannaher Constantine
Osaka Gas Co. Ltd.
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