Miniature colorimeter

Details Miniature colorimeter Miniature colorimeter

1999-08-02

2000-12-05

Font, Frank G.

Optics: measuring and testing

By shade or color

With sample responsive to plural colors applied simultaneously

G01N 2125

Patent

active

061574546

ABSTRACT:
The invention is a colorimeter for measurement of the color of an object. The colorimeter comprises a hand-held probe which is similar in size and shape to a large writing pen and provides the capability of measuring the color of a spot or target on, or within, the surface of an object. A measurement is made while placing the tip of the probe against, or in close proximity to, the surface of the object. The calorimeter generates from a single measurement three color data points representing the reflectance of the spot measured at the wavelengths of three primary colors. From those data points, a microprocessor can perform analyses yielding a single color value represented in various standard formats, or it can compare the measured values with a preloaded table of values. The colorimeter can then present the results on a liquid crystal display. The colorimeter contains multiple light emitting diodes (LEDs) for successively emitting light of different colors toward a target, a light sensor for receiving light reflected from the target, and a light pipe for directing light from the LEDs to the target. The display may be an integral part of the probe or contained in a separate display module connected to the probe by an electrical cable.

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X-Rite, 938 SpectroDensitometer, sales brochure (1999) 1 pg.
X-Rite, SP64 Portable Sphere Spectrophotometer, sales brochure (1999) 1 pg.

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