Optical web monitoring apparatus

Details Optical web monitoring apparatus Optical web monitoring apparatus

1986-08-27

1988-10-04

Evans, F. L.

Optics: measuring and testing

By monitoring of webs or thread

For flaws or imperfections

250563, G01N 2188

Patent

active

047752386

ABSTRACT:
An optical web monitoring apparatus has an illuminating arrangement which images the pupil of the source of illumination into the observing pupil of the camera objective (18) of a diode row camera using a strip-like concave mirror (14), or two strip-like concave mirrors (14, 15), and thus achieves the maximum attainable light yield. The construction is realized such that a fault seeking apparatus with a laser scanner can be used at the same time using the same mirror strips (14, 15). Thus two monitoring operations can be carried out simultaneously.

REFERENCES:
patent: 2798966 (1957-07-01), Summerhayes, Jr.
patent: 3693021 (1972-09-01), Lake, Jr. et al.
patent: 4549206 (1985-10-01), Suzuki et al.

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