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:
Nov. 17, 2020
Filed:
Dec. 10, 2018
Spectra Systems Corporation, Providence, RI (US);
Nabil Lawandy, Saunderstown, RI (US);
Spectra Systems Corporation, Providence, RI (US);
Abstract
An authentication system and associated method including a substrate including one or more doped inclusions disposed in or on the substrate at one or more portions of the substrate such that electromagnetic radiation absorption and reflectance varies between a portion of the substrate in which a doped inclusion is disposed and a portion of the substrate in which no doped inclusion is disposed, and a detector including an electromagnetic radiation source configured to irradiate the substrate with electromagnetic radiation at multiple wavelengths and an imaging system configured to acquire multiple images of the substrate subjected to irradiation.