Patent ID: 6061140
Filing Date: 2000-05-09
Classification: G01J,G01N

Abstract:
A color measurement device comprising:a sample station;a source of illumination to illuminate said sample station and an object sample at said sample station;a color measurement engine to measure light reflected from the sample, said engine including first and second ports, said sample area and said first port defining a first light path, said sample area and said second port defining a second light path, said engine further including first and second light detectors aligned with the first and second light paths respectively, said engine further including a rotatable filter wheel supporting a plurality of filters in a circular configuration, said wheel being positioned and said filters being spaced so that one of said filters is aligned with the first light path when another of said filters is aligned with the second light path, said engine further including a drive for automatically rotating said filter wheel to align said filters with said first and second ports in a desired sequence; anda measurement area size selector mechanism associated with said light measurement engine to select a size of a measurement area of said sample station, said selector mechanism defining a pair of small apertures and a pair of large apertures, said selector mechanism being movable so that either said pair of small apertures or said pair of large apertures are aligned with said first and second ports.