Contact lens that facilitates antenna communication via sensor impedance modulation
First Claim
1. A system, comprising:
- a contact lens, comprising;
a substrate;
a radio frequency (RF) antenna, disposed on or within the substrate; and
a sensing component disposed on or within the substrate, wherein the sensing component has an impedance that loads the RF antenna, and wherein the impedance of the sensing component is dependent upon one or more sensed features.
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0 Petitions
Accused Products
Abstract
Systems, contact lenses and methods that facilitate antenna communication via sensor impedance modulation are provided. In one aspect, a system can include a contact lens and a radio frequency (RF) reader. The contact lens can include a substrate; an RF antenna, disposed on or within the substrate; and a sensing component, disposed on or within the substrate, and directly coupled to the RF antenna, wherein the RF antenna is configured to change impedance value as a sensed value of the sensing component changes. The RF reader is external to the contact lens, and configured to interrogate the RF antenna with an RF signal. The RF reader can receive a reflected RF signal from the RF antenna in response to the interrogation. The magnitude, phase and/or a frequency of the reflected RF signal can be based on the impedance value of the RF antenna.
227 Citations
19 Claims
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1. A system, comprising:
a contact lens, comprising; a substrate; a radio frequency (RF) antenna, disposed on or within the substrate; and a sensing component disposed on or within the substrate, wherein the sensing component has an impedance that loads the RF antenna, and wherein the impedance of the sensing component is dependent upon one or more sensed features. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system, comprising:
a contact lens, comprising; a substrate; a capacitive pressure sensing component disposed on or within the substrate, wherein the capacitive sensing component has an impedance dependent upon a sensed pressure; and a radio frequency (RF) antenna, loaded by the impedance of the capacitive pressure sensing component, and configured to reflect a modified version of a received RF signal at a selected frequency based, at least, on the sensed pressure. - View Dependent Claims (11, 12)
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13. A method, comprising:
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sensing, by a sensing component of a contact lens, one or more sensed features, wherein the sensing changes an impedance of the sensing component, wherein the impedance of the sensing component loads an antenna in the contact lens; and reflecting, by the antenna, a radio frequency (RF) signal, wherein the RF signal is based, at least, on the impedance of the sensing component. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification