Fiber optic color balance monitor

Details Fiber optic color balance monitor Fiber optic color balance monitor

1992-06-08

1993-06-29

Evans, F. L.

Optics: measuring and testing

By shade or color

With sample responsive to plural colors applied simultaneously

356419, G01N 2125

Patent

active

052239187

ABSTRACT:
A fiber optic apparatus and method for monitoring color balance of a product that can consist of a complex two dimensional color pattern. This system employs at least one illuminating optical fiber (18) and at least two pick-up optical fibers (16). Filters (36) associated with each of the pick-up fibers (16) separate the reflected light into different color components. Photodetectors (38) convert the light intensity from each fiber (16) into analog electrical signals which are routed to a microprocessor based signal processing module (10) for conversion to digital output and subsequent analysis for monitoring color balance. If there is a change in color balance, a visual and/or acoustic alarm (62) is automatically activated.

REFERENCES:
patent: 3885878 (1975-05-01), Ishak
patent: 3970394 (1976-07-01), Stanton
patent: 4003660 (1977-01-01), Christie, Jr. et al.
patent: 4464054 (1984-08-01), Karras et al.
"Fully Electronic Color Sensor Breaks `Cost Barrier`", Fiber Optics Sensors and Systems, Oct., 1989.

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