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A Fully Integrated RF-Powered Contact Lens With a Single Element Display

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6 Author(s)
Pandey, J. ; Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA ; Yu-Te Liao ; Lingley, A. ; Mirjalili, R.
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We present progress toward a wirelessly-powered active contact lens comprised of a transparent polymer substrate, loop antenna, power harvesting IC, and micro-LED. The fully integrated radio power harvesting and power management system was fabricated in a 0.13 μm CMOS process with a total die area of 0.2 mm2. It utilizes a small on-chip capacitor for energy storage to light up a micro-LED pixel. We have demonstrated wireless power transfer at 10 cm distance using the custom IC and on-lens antenna.

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Biomedical Circuits and Systems, IEEE Transactions on  (Volume:4 ,  Issue: 6 )