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:
Dec. 10, 2019
Filed:
Dec. 21, 2016
Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US);
Corey Kenneth Barrows, Colchester, VT (US);
Steven Philip Hoggarth, Cary, NC (US);
Scott Robert Humphreys, Greensboro, NC (US);
John Rocco Robillotto, Tarrytown, NY (US);
Adam Toner, Jacksonville, FL (US);
George A. Zikos, Riverdale, NY (US);
Johnson & Johnson Vision Care, Inc., Jacksonville, FL (US);
Abstract
The present disclosure relates to sensor systems for electronic ophthalmic devices. In certain embodiments, the sensor systems may comprise a sensor such as an adjustable resistor configured in series with an eye of a user of the electronic ophthalmic device. The sensor systems may comprise a gain stage configured to amplify a signal indicative of a difference between a voltage drop across the eye and the adjustable resistor. The sensor systems may comprise an integrator configured to integrate the amplified signal. A resistance value of the adjustable resistor is configured to cancel a DC component of a resistance of the eye when an electrical current is caused to flow through the eye and the adjustable resistor. As such, the configured resistance value of the adjustable resistor is indicative of an impedance of the eye.