Sensor contact

Details Sensor contact Sensor contact

1978-02-27

1980-03-25

Corbin, John K.

Optics: measuring and testing

By monitoring of webs or thread

250571, 356445, G01N 2148, G01N 2118, G01N 2130

Patent

active

041948408

ABSTRACT:
A sensing element having a face adapted to contact the surface of a travelling web or sheet of paper, said face formed into a convex surface that substantially is in the form of a single base segment of a sphere having a radius between 35 and 10 mm. The surface of the web is pressed against the face so that the area of contact between the surface and the face has a minimum dimension of 2 mm. In the preferred application of the present invention the element is as an optical window in an optical sensing device wherein light is passed through the window in a direction and is reflected to sensors positioned on the same side of the window as the light source.

REFERENCES:
patent: 4019819 (1977-04-01), Lodzinski

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