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. 28, 2015
Filed:
Jan. 31, 2013
Thomas D. Pawlik, Rochester, NY (US);
Judith A. Bose, Webster, NY (US);
Ronald S. Cok, Rochester, NY (US);
Nelson A. Blish, Rochester, NY (US);
Thomas D. Pawlik, Rochester, NY (US);
Judith A. Bose, Webster, NY (US);
Ronald S. Cok, Rochester, NY (US);
Nelson A. Blish, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A system for authenticating an object includes a label () with invisible indicia () on the object which rotates a polarization of incident light; a digital camera () having a light source (), an image sensor (), a first polarizing filter () having a first orientation, and a second polarizing filter () having a second orientation orthogonal to the first orientation; illuminating the label with light from the light source through the first linear polarizer; forming an image with the image sensor using reflected light from the label wherein the reflected light passes through the second polarizer prior to reaching the sensor; wherein the second linear polarizer makes the invisible indicia visible; and authenticating the object.