Smart contact device
An eye contact device including at least one of a positive terminal including a first material having a standard reduction potential that is less than a standard reduction potential of chlorine; and a negative terminal including a second material having an electrode potential that favors reduction relative to a reduction of water. A method including one of forming a positive terminal of a two terminal device in an eye contact device, the positive terminal including a first material having a standard reduction potential that is less than a standard reduction potential of chlorine; and forming a negative terminal of the two terminal device including a second material having an electrode potential that favors reduction relative to a reduction of water.
1. An eye contact device comprising:
a battery including a positive terminal and a negative terminal;
an enclosure material having the battery disposed therein, wherein the enclosure material is configured to prevent solution ingression into the eye contact device at the positive terminal and the negative terminal, wherein the positive terminal comprises a first material having a standard reduction potential that is less than a standard reduction potential of chlorine, and the negative terminal comprises a second material having an electrode potential that favors reduction relative to a reduction of water, wherein the second material of the negative terminal comprises a combination of silver chloride and silver metal;
an accommodation actuator disposed within the enclosure to provide variable optical power;
a controller disposed within the enclosure material and coupled to the positive and negative terminals of the battery and to the accommodation actuator; and
interconnection traces disposed within the enclosure and linking the controller to the battery or the controller to the accommodation actuator, wherein the interconnection traces each comprise the combination of silver chloride and silver metal.
2. The eye contact device of claim 1 , wherein the first material comprises the combination of silver chloride and silver metal.
3. The eye contact device of claim 1 , further comprising a rectifier, wherein the rectifier includes a positive terminal formed from the first material and a negative terminal formed from the second material.
4. The eye contact device of claim 1 , wherein each of the positive terminal and the negative terminal comprise a combination of silver and silver chloride.
5. The eye contact device of claim 1 , wherein the first material and the second material prevent the formation of at least one of NaClO, Cl, or NaOH when the solution ingresses into the eye contact device.
6. A method comprising one of:
forming a positive terminal of a battery in an eye contact device, the positive terminal comprising a first material having a standard reduction potential that is less than a standard reduction potential of chlorine;
forming a negative terminal of the battery comprising a second material having an electrode potential that favors reduction relative to a reduction of water, wherein the second material of the negative terminal comprises a combination of silver chloride and silver metal;
forming first interconnection traces extending between the positive and negative terminals of the battery and a controller;
forming a second interconnection trace extending between the controller and an accommodation actuator that provides variable optical power; and
forming an enclosure material around the battery, the controller, the accommodation actuator, the first interconnection traces, and the second interconnection trace to prevent solution ingression into the eye contact device at the positive terminal, the negative terminal, the first interconnection traces, or the second interconnection trace, wherein the first interconnection traces and the second interconnection trace each comprise the combination of silver chloride and silver metal.
7. The method of claim 6 , wherein forming the positive terminal comprises forming one or more traces coupled thereto.
8. The method of claim 6 , wherein forming the negative terminal comprises forming one or more traces coupled thereto.
9. The method of claim 6 , wherein forming the positive terminal and forming the negative terminal comprise printing the first material and the second material.
10. The method of claim 6 , wherein the first material is selected from the group consisting of silver, zinc, iron and aluminum.
11. The method of claim 10 , wherein the first material comprises silver.
12. The method of claim 6 , wherein each of the positive terminal and the negative terminal comprise a combination of the first material and the second material.
13. An ophthalmic device comprising:
an enclosure; and
a battery disposed in the enclosure, the battery including first and second terminals formed from a combination of silver and silver chloride, wherein the enclosure is configured to prevent solution ingression into the ophthalmic device at the first and second terminals which are surrounded by the enclosure;
control electronics disposed in the enclosure and electrically coupled to the battery via one or more first traces formed from the combination of silver and silver chloride; and
an accommodation actuator disposed in the enclosure and electrically coupled to the control electronics via one or more second traces formed from the combination of silver and silver chloride.
14. The ophthalmic device of claim 13 , further comprising:
a power supply disposed in the enclosure, wherein the power supply includes the battery, and further includes:
charging circuitry coupled to regulate inductive charging of the battery; and
an energy harvesting antenna coupled to the charging circuitry to facilitate the inductive charging.
15. The ophthalmic device of claim 14 , wherein the charging circuitry includes an energy storage device coupled to mitigate high frequency variations in energy provided by the energy harvesting antenna, and
wherein the energy harvesting antenna includes positive and negative electrodes formed from the combination of silver and silver chloride.
16. The ophthalmic device of claim 15 , wherein the energy storage device is a capacitor or an inductor.
17. The ophthalmic device of claim 13 , further comprising:
a sensor system disposed in the enclosure and coupled to the control electronics, the sensor system coupled to provide a feedback signal to the control electronics.
18. The ophthalmic device of claim 13 , further including:
an antenna disposed in the enclosure and electrically coupled to the control electronics, the antenna coupled for wireless communications with an external reader.
19. An eye contact device comprising:
a battery including a positive terminal and a negative terminal;
an enclosure material having the battery disposed therein, wherein the enclosure material is configured to prevent solution ingression into the eye contact device at the positive terminal and the negative terminal, wherein the positive terminal comprises a first material having a standard reduction potential that is less than a standard reduction potential of chlorine, and the negative terminal comprises a second material having an electrode potential that favors reduction relative to a reduction of water, wherein the first and second materials comprise a combination of silver chloride and silver metal;
a rectifier disposed within the enclosure material and coupled to the positive and negative terminals via first interconnection traces formed from the combination of silver chloride and silver metal; and
a controller disposed within the enclosure material and coupled to the positive and negative terminals of the battery via second interconnection traces also formed from the combination of silver chloride and silver metal.