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Power transducer for a retinal implant using using a contact lens

  • US 10,099,049 B2
  • Filed: 12/15/2017
  • Issued: 10/16/2018
  • Est. Priority Date: 09/26/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving from a first power source a first form of power at a power harvesting circuit disposed within a contact lens worn over an eye, the first power source being external to the contact lens;

    converting the first form of power to electromagnetic power using a transducer element of the power harvesting circuit, the transducer element being at least one of a solar power cell, a micro-electro-mechanical system, a radio frequency (RF) receiver, or an induction coil;

    wirelessly transmitting the electromagnetic power from an energy transfer circuit disposed within the contact lens to a receiver in a self-contained device remote from the contact lens, the energy transfer circuit being operatively coupled to the power harvesting circuit and being configured for wireless transmission of power from the contact lens to the self-contained device, the energy transfer circuit comprising one or more wireless transfer elements, each of the wireless transfer elements being one of an RF transmitter, an induction coil for direct or resonant inductive energy transfer, or an RF power amplifier; and

    powering the self-contained device with the electromagnetic power received by the receiver.

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