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:
Feb. 13, 2007
Filed:
Apr. 21, 2004
David Gascoyne, Schnectady, NY (US);
Brian Lawrence, Clifton Park, NY (US);
Sriramakrishna Maruvada, Evansville, IN (US);
Radislav Potyrailo, Niskayuna, NY (US);
Philippe Schottland, Evansville, IN (US);
Micah Sakiestewa Sze, Albany, NY (US);
Marc Brian Wisnudel, Clifton Park, NY (US);
David Gascoyne, Schnectady, NY (US);
Brian Lawrence, Clifton Park, NY (US);
Sriramakrishna Maruvada, Evansville, IN (US);
Radislav Potyrailo, Niskayuna, NY (US);
Philippe Schottland, Evansville, IN (US);
Micah Sakiestewa Sze, Albany, NY (US);
Marc Brian Wisnudel, Clifton Park, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An authentication system may comprise: a first light source, a second light source, and at least three optically filtered light sensing devices. The first light source can have a first light source spectral distribution and can be capable of providing sufficient excitation to produce a photoluminescent emission from a medium comprising a luminescent tag and a color. The second light source can have a visible multi-wavelength spectral distribution and can be capable of providing sufficient visible multi-wavelength illumination of the medium to generate a second analog response. Each light sensing device can have a different device spectral sensitivity range.