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:
Jun. 09, 2015
Filed:
Feb. 26, 2013
Exelis, Inc., McLean, VA (US);
Kevin P. Hines, Daleville, VA (US);
EXELIS, Inc., McLean, VA (US);
Abstract
A system for monitoring the condition of an optical device user with non-visible light includes a non-visible light source that is positioned to direct a beam of non-visible light onto an eye of the optical device user. A non-visible light sensor is positioned to receive non-visible light that is reflected off of the eye and is configured to generate a signal corresponding to either a level or an intensity of the received non-visible light. A processor is connected to the light sensor, and is configured to determine a condition of the eye including whether the eye is either not moving, closed without blinking or open without blinking for more than a pre-determined amount of time based upon signals received from the light sensor. Also disclosed herein is a method for monitoring the condition of an optical device user with non-visible light.