Low-Profile Induced-Voltage Distance Ranger for Smart Contact Lenses

• Published in: IEEE transactions on biomedical engineering Vol. 68; no. 7; pp. 2203 - 2210
• Main Authors: Ghosh, Chayanjit, Mastrangelo, Alex, Karkhanis, Mohit, Deshpande, Adwait, Banerjee, Aishwaryadev, Kim, Hanseup, Mastrangelo, Carlos H.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.07.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive optics; Biomedical engineering; Coils; Contact lenses; Distance measurement; electromagnetic coupling; Electromagnetic fields; electromagnetic induction; Energy requirements; Eye; Eye movements; gaze tracking; Gels; Inductance; Kapton (trademark); Lenses; Observers; Optics; Polyimide resins; Signal generators; Substrates; Tracking; Triangulation; Visualization

Objective: In this paper, we present a novel, low-profile, scleral-coil based, distance ranging system which is suitable for smart, accommodating contact lenses. Methods: We measure the induced emf between a set of four thin semi-circular coils patterned on flexible Kapton substrates that conform to...