Smoothness sensor

Details Smoothness sensor Smoothness sensor

1986-10-02

1992-05-05

Rosenberger, Richard A.

Optics: measuring and testing

By monitoring of webs or thread

356446, G01N 2147

Patent

active

051102129

ABSTRACT:
A system for providing a measure of the smoothness of a moving web in which light from a source is focused on a spot on the moving web. Light from an arc of substantially 360.degree. around the optical axis is collected and light from 120.degree. sectors of the collected light is reflected to three detectors the outputs of which are processed to provide the smoothness measure.

REFERENCES:
patent: 3453053 (1969-07-01), Gunn-Russell
patent: 3693021 (1972-09-01), Lake, Jr. et al.
patent: 3806256 (1974-04-01), Ishak
patent: 4092068 (1978-05-01), Lucas et al.
patent: 4252443 (1981-02-01), Lucas et al.
patent: 4423331 (1983-12-01), Koizumi et al.
patent: 4464050 (1984-08-01), Kato et al.
patent: 4582429 (1986-04-01), Callaghan
patent: 4598997 (1986-07-01), Steigmeier

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