Radiant energy – Infrared-to-visible imaging
Patent
1988-12-13
1991-01-29
Hannaher, Constantine
Radiant energy
Infrared-to-visible imaging
250562, 250563, 2503581, 2503591, 250341, G01N 2100, G01N 2101, G01N 2188, G01N 2189
Patent
active
049888757
ABSTRACT:
A sample inspection arrangement incorporates a sample of polyethylene with an included defect, or flaw, a light source containing near infrared wavelengths, and a video camera. Polyethylene has relatively high spectral transmissivity for wavelengths in the band of near infrared wavelengths. The video camera collects data from a beam of the near infrared light which either reflects from or is transmitted directly through a portion of the polyethylene sample. Data is collected from both defect free portions of the polyethylene sample and portions of polyethylene sample including at least one defect. A visual image of the polyethylene sample and included defect is produced on either a video monitor, a paper print out, or a photograph. The method for inspecting a sample of cable or a continuously moving section of cable also is described.
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Ortiz Marcos G.
Stix Marsha S.
Alber Oleg E.
AT&T Bell Laboratories
Glick Edward J.
Hannaher Constantine
Havill Richard B.
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