Patent Document ID: 6040905
Application ID: 09129271
Patent Status: 1

Claim One:
1. A fiber classing device comprising: a sample window for viewing a fiber sample, a light source for providing light that is directed toward and reflected by the fiber sample, producing reflected light, a photo sensitive detector positioned to receive the reflected light, for detecting lightness, redness, and yellowness of the fiber sample, and for producing a lightness signal, a redness signal, and a yellowness signal based on the lightness, redness, and yellowness of the fiber sample, and processing means for (1) receiving the lightness signal, redness signal, and yellowness signal from the photo sensitive detector, (2) assigning a preliminary grade to the fiber sample based at least in part on the lightness signal and yellowness signal, and (3) selectively adjusting the preliminary grade to a final grade based at least in part on the redness signal.