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:
Apr. 01, 2014
Filed:
Oct. 31, 2008
Brett E. Dahlgren, Albany, OR (US);
Stephan R. Clark, Albany, OR (US);
Brett E. Dahlgren, Albany, OR (US);
Stephan R. Clark, Albany, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A color measurement device includes a light pipe and a light source. The light pipe is oriented length-wise towards a color sample surface along a first axis that is non-perpendicular to the surface. A color sample is positioned on the surface. The light pipe has a near opening, a far opening, and a face at the far opening. The near opening is closer to the color sample than the far opening. The light source is positioned near the far opening of the light pipe, and is to output light along a second axis and into the light pipe at the far opening. The light reflects off the surface after exiting the light pipe at the near opening. The second axis is non-perpendicular to the face of the light pipe at the far opening. The light non-uniformly illuminates the color sample after exiting the light pipe at the near opening.