The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2000
Filed:
Aug. 02, 1999
Gregg A Wagner, Boulder, CO (US);
Gary Emerson, Golden, CO (US);
Colorimeter, LLC, Glendale, CA (US);
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.