Electro-active opthalmic lens having an optical power blending region
First Claim
Patent Images
1. An electro-active ophthalmic lens comprising:
- a first element having a convex surface;
a second element having a concave surface, the concave surface mated to the convex surface of the first element;
a decentered electro-active zone, the decentered electro-active zone comprising an electro-active material disposed in a cavity formed between the convex surface and the concave surface, the electro-active material having a first refractive index in a first state and a second refractive index in a second state, the decentered electro-active zone having a centroid disposed below a mid-line of the first element;
at least one pair of electrodes, disposed on the concave surface and the convex surface, that operatively applies an electric field to the electro-active material and operatively switches the electro-active material between the first state and the second state; and
a framing layer, disposed around the electro-active material and between the concave surface and the convex surface, that operatively seals the electro-active material in the cavity;
wherein;
the convex surface or the concave surface defines a diffractive pattern along an interior surface of the cavity; and
the concave surface extends to an edge of the convex surface.
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Abstract
A spectacle lens is disclosed. The disclosed lens provides a vision correcting area for the correction of a wearer'"'"'s refractive error. The viewing correction area provides correction for non-conventional refractive error to provide at least a part of the wearer'"'"'s vision correction. The lens has a prescription based on a wave front analysis of the wearer'"'"'s eye and the lens can further be modified to fit within an eyeglass frame.
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Citations
20 Claims
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1. An electro-active ophthalmic lens comprising:
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a first element having a convex surface; a second element having a concave surface, the concave surface mated to the convex surface of the first element; a decentered electro-active zone, the decentered electro-active zone comprising an electro-active material disposed in a cavity formed between the convex surface and the concave surface, the electro-active material having a first refractive index in a first state and a second refractive index in a second state, the decentered electro-active zone having a centroid disposed below a mid-line of the first element; at least one pair of electrodes, disposed on the concave surface and the convex surface, that operatively applies an electric field to the electro-active material and operatively switches the electro-active material between the first state and the second state; and a framing layer, disposed around the electro-active material and between the concave surface and the convex surface, that operatively seals the electro-active material in the cavity; wherein; the convex surface or the concave surface defines a diffractive pattern along an interior surface of the cavity; and the concave surface extends to an edge of the convex surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An electro-active ophthalmic lens comprising:
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a first element having a convex surface; a second element having a concave surface, the concave surface mated to the convex surface of the first element; a decentered electro-active zone, the decentered electro-active zone comprising an electro-active material disposed in a cavity formed between the convex surface and the concave surface, the electro-active material having a first refractive index in a first state and a second refractive index in a second state, the decentered electro-active zone having a centroid disposed below a mid-line of the first element; at least one pair of electrodes, disposed on the concave surface and the convex surface, that operatively applies an electric field to the electro-active material and operatively switches the electro-active material between the first state and the second state; and wherein; the convex surface or the concave surface defines a diffractive pattern along an interior surface of the cavity; and the concave surface extends to an edge of the convex surface.
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20. An electro-active ophthalmic lens comprising:
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a first element having a convex surface; a second element having a concave surface, the concave surface mated to the convex surface of the first element; a decentered electro-active zone, the decentered electro-active zone comprising an electro-active material disposed in a cavity formed between the convex surface and the concave surface, the electro-active material having a first refractive index in a first state and a second refractive index in a second state, the decentered electro-active zone having a centroid disposed below a mid-line of the first element; and a framing layer, disposed around the electro-active material and between the concave surface and the convex surface, that operatively seals the electro-active material in the cavity; wherein; the convex surface or the concave surface defines a diffractive pattern along an interior surface of the cavity; and the concave surface extends to an edge of the convex surface.
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Specification