Simulation and Experimental Comparison of Sensing Approaches for Capacitive Eye Tracking

Capacitive eye tracking has the potential to replace optical technologies for continuous low-power gaze detection in smart eyeglasses. In this work, different sensing approaches suitable for wearable integration are investigated. Starting from finite-element simulations, a detailed numerical electrical model was improved by comparing the simulated results with experimental measurements performed in different electrode configurations and charge-sensing circuits. Preliminary results show potential for the identification of a few regions of interest in the visual field with fF capacitive resolution.