Optical system for use with color sorter or grader

Details Optical system for use with color sorter or grader Optical system for use with color sorter or grader

1978-02-01

1979-04-17

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, G01J 350

Patent

active

041502876

ABSTRACT:
An optical system for use with apparatus for grading articles of produce according to color. The simplified system is comprised of an aspherical lens, a field stop and an end of a fiber optic bundle at the image plane of the lens. Color filters and photoelectric detectors are positioned from the opposite end of the bundle at a distance so as to be uniformly illuminated by light emanating from each fiber of the bundle upon which a portion of the image is present.

REFERENCES:
patent: 3981590 (1976-09-01), Perkins

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