Electrowetting ophthalmic devices including an elastic electrode
First Claim
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1. An ophthalmic device comprising:
- a support structure;
first and second optical windows disposed on opposite sides of the support structure;
two immiscible fluids disposed in a cavity formed by the support structure and the first and second optical windows; and
an elastic electrode disposed on an inner surface of the support structure within the cavity and encircling the cavity, wherein the elastic electrode is formed from an elastic metal alloy having a minimum yield strain of 0.25%, and wherein the elastic electrode is formed from a foil of the elastic metal alloy.
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Abstract
Ophthalmic devices having elastic electrodes are disclosed herein. An example ophthalmic device may be an intraocular lens that includes a support structure, two optical windows, two immiscible fluids, and an elastic electrode. The support structure may have an inner surface defining an aperture with first and second optical windows disposed on opposite sides of the support structure and spanning the aperture. The two immiscible liquids may be disposed in a cavity formed by the aperture and the first and second optical windows, and the elastic electrode may be disposed on the inner surface. The elastic electrode may be formed from an elastic metal alloy having a minimum yield strain of 0.25%.
22 Citations
25 Claims
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1. An ophthalmic device comprising:
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a support structure; first and second optical windows disposed on opposite sides of the support structure; two immiscible fluids disposed in a cavity formed by the support structure and the first and second optical windows; and an elastic electrode disposed on an inner surface of the support structure within the cavity and encircling the cavity, wherein the elastic electrode is formed from an elastic metal alloy having a minimum yield strain of 0.25%, and wherein the elastic electrode is formed from a foil of the elastic metal alloy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14)
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11. The ophthalmic device 10, wherein the elastic electrode has a triangular-shaped cross-section having a back surface opposite the conical-shaped surface, the back surface extending from a flange-like top surface to an underside surface, and
wherein a thickness of the elastic electrode at the back surface is thicker than the elastic electrode along the conical-shaped surface.
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15. An ophthalmic device, comprising:
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a support structure of an intraocular lens, the support structure having top and bottom sides, and an inner surface forming an aperture, wherein the inner surface is at an oblique angle to the top and bottom sides of the support structure, and wherein the support structure is formed from a biocompatible material; and an elastic electrode disposed on the inner surface to electrically induce electrowetting in the intraocular lens and encircling the cavity, the elastic electrode formed from an elastic metal alloy having a minimum yield strain of 0.25%. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An ophthalmic device comprising:
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a support structure; first and second optical windows disposed on opposite sides of the support structure; two immiscible fluids disposed in a cavity formed by the support structure and the first and second optical windows; and an elastic electrode disposed on an inner surface of the support structure within the cavity and encircling the cavity, wherein the elastic electrode is formed from an elastic metal alloy having a minimum yield strain of 0.25%, and wherein the ophthalmic device is configured to be folded or rolled up without experiencing inelastic deformation upon unfolding or unrolling.
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Specification