Optical property measurement and control system

Details Optical property measurement and control system Optical property measurement and control system

1975-01-10

1977-04-26

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

162263, 2351513, 250559, 356173, 356176, 356200, G01N 2100, G01V 128, G01N 2116

Patent

active

040198197

ABSTRACT:
In an illustrated embodiment, brightness, color, opacity and fluorescent contribution to brightness are measured by an on-line sensing head providing for simultaneous measurement of transmitted and reflected light. By measuring two independent optical parameters, paper optical properties of a partially translucent web are accurately characterized substantially independently of paper grade and weight. The instrument is designed so as to be capable of transverse scanning of a moving paper web on the paper machine, and so as to monitor desired paper optical characteristics with sufficient accuracy to enable on-line control of the optical characteristics of the paper being manufactured.

REFERENCES:
patent: 3827808 (1974-08-01), Cho

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