Methods of separating selected items from a mixture including ra

Details Methods of separating selected items from a mixture including ra Methods of separating selected items from a mixture including ra

1995-02-10

1995-11-07

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

209577, 209587, 250330, B07C 5342

Patent

active

054649811

ABSTRACT:
Methods of operating an automated optical inspection system to separate selected items, e.g., grape stems (124, 126, 128), grape leaves (122), or rocks from a mixture (16) of those items and raisins (120) include illuminating the mixture with illumination (37', 37") characterized by a spectral power distribution (86, 98) in the near infrared (88, 90, 100, 102), detecting reflections of wavelengths of the illumination in the near infrared, identifying the selected items based on the detected reflections, and sorting the selected items from the mixture.

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Anzai, Yoshinori; Saikatsu, Takeo; Yamazaki, Hiroyoshi et al.; "Rare-Gas Discharge Lamps Suitable For Industrial Use"; Lighting Design and Application; Feb. 1987; pp. 33-38.
Wolfe, William L. and Zissis, George J., The Infrared Handbook, 1989, pp. 3-13, 3-121, 3-129, and 3-130.
McClure, Fred, "Theory of Near Infrared Reflectance Spectroscopy," instruction materials for FPEI/ASAE UV/VIS/NIR Measurement Fundamentals seminar, 1992, (three loose leaf sheets).

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