04988875 is referenced by 16 patents and cites 7 patents.

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.

Title
Near infrared polyethylene inspection system and method
Application Number
7/283650
Publication Number
4988875
Application Date
December 13, 1988
Publication Date
January 29, 1991
Inventor
Marsha S Stix
Tinton Falls
NJ, US
Marcos G Ortiz
Freehold
NJ, US
Agent
Oleg E Alber
Richard B Havill
Assignee
AT&T Bell Laboratories
NJ, US
IPC
G01N 21/89
G01N 21/88
G01N 21/01
G01N 21/00
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