Radiant energy – Infrared-to-visible imaging
Patent
1987-12-28
1988-09-20
Levy, Stewart J.
Radiant energy
Infrared-to-visible imaging
250339, G01N 2147, G01N 2135
Patent
active
047727896
ABSTRACT:
A method for detecting, locating and measuring leaks in a test object is described using a differential absorption technique. In a preferred embodiment the test object is first pressurized with a light absorbing fluid. The test object is then illuminated with a light source at a wavelength which is capable of being absorbed by the absorbing fluid. An image of the test object and any fluid in the vicinity of the test object is created by means of a video camera directed toward the test object and that image is electronically stored. A second image is then created in such a manner that any absorbing fluid in the vicinity of the test object does not appear in that second image. The second image is also electronically stored. The electronically stored information regarding the first and second images are then compared and analyzed for detecting, locating and measuring any leaking fluid from the test object.
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Delcher Ray C.
Maram Jonathan M.
Arana Louis M.
Field Harry B.
Ginsberg Lawrence N.
Hamann H. Fredrick
Levy Stewart J.
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