Corey Kenneth Barrows,Steven Philip Hoggarth,Scott Robert Humphreys,John Rocco Robillotto,Adam Toner,George A. Zikos
申请号：
US15386028
公开号：
US10502979B2
申请日:
2016.12.21
申请国别(地区):
US
年份:
2019
代理人:
摘要：
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.
