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:
Jul. 22, 2003
Filed:
May. 12, 2000
Bernard J. Berg, Kentwood, MI (US);
Timothy L. Walker, West Olive, MI (US);
Michael J. Mater, Kentwood, MI (US);
X-Rite, Incorporated, Grandville, MI (US);
Abstract
A color measurement instrument capable of measuring both the nonpolarized spectral response and the polarized spectral response of a sample on a single reading. The instrument includes a source of polarized light to illuminate the sample, and a detector for measuring the light reflected by the sample. A rotatable filter wheel is located between the sample and the detector. Nonpolarizing bandpass filters and polarizing bandpass filters are mounted in the wheel in a circular configuration. A drive mechanism rotates the wheel to automatically sequentially align each of the nonpolarizing filters and the polarizing filters with the detector, enabling the instrument to sample both nonpolarized data and polarized data on a single reading.