Contact lens with PVA cover layer
First Claim
Patent Images
1. A contact lens comprising:
- a lens body formed of substantially transparent material;
an opaque simulated iris pattern applied to said lens body; and
a cover layer of polyvinyl alcohol less than 15 microns in thickness overlying said simulated iris pattern to substantially encapsulate said simulated iris pattern between said lens body and said cover layer;
wherein said lens body comprises a concave base surface and a convex outer surface, and wherein said opaque simulated iris pattern is applied along the concave base surface.
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Accused Products
Abstract
A contact lens having a cover layer of polyvinyl alcohol and an opaque simulated iris pattern and an associated method of manufacture. The opaque simulated iris pattern obscures the underlying natural iris for superior color transformation, and provides enhanced cosmetic effect.
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Citations
11 Claims
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1. A contact lens comprising:
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a lens body formed of substantially transparent material;
an opaque simulated iris pattern applied to said lens body; and
a cover layer of polyvinyl alcohol less than 15 microns in thickness overlying said simulated iris pattern to substantially encapsulate said simulated iris pattern between said lens body and said cover layer;
wherein said lens body comprises a concave base surface and a convex outer surface, and wherein said opaque simulated iris pattern is applied along the concave base surface. - View Dependent Claims (2, 3, 4, 5)
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6. A contact lens comprising:
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a lens body formed of substantially transparent material;
an opaque simulated iris pattern applied to said lens body; and
a cover layer of polyvinyl alcohol overlying said simulated iris pattern to substantially encapsulate said simulated iris pattern between said lens body and said cover layer;
wherein said polyvinyl alcohol in the cover layer is has an average molecular weight of about 125,000.
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7. A contact lens comprising:
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a lens body formed of substantially transparent material;
an opaque simulated iris pattern applied to said lens body; and
a cover layer of polyvinyl alcohol overlying said simulated iris pattern to substantially encapsulate said simulated iris pattern between said lens body and said cover layer; and
wherein said polyvinyl alcohol cover layer is an annular ring.
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8. A contact lens comprising:
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a lens body formed of substantially transparent material having both a concave base surface and a convex outer surface;
a cover layer of polyvinyl alcohol on at least one of said concave surface or convex surface;
wherein said cover layer is less than 15 microns in thickness. - View Dependent Claims (9, 10, 11)
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Specification