Laminated ophthalmic lens
AssigneeCorning Incorporated
InventorsDavid Dasher, E. Robert Fretz, Jr., Mark S. Friske, Ronald E. Johnson
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Abstract
An improved, laminated, ophthalmic lens structure, and method of producing the structure. The structure comprises two adjacent layers of dissimilar, organic plastic materials, either or both of which contain matter that tends to migrate. The improvement comprises a barrier layer that is intermediate the adjacent organic plastic layers; that is impermeable to migrating matter; and that is composed of a polyolefin polymeric material modified by the presence of acid or anhydride functional groups.
Claims11
In an improved, laminated, ophthalmic lens structure comprising two adjacent layers of dissimilar, organic plastic materials, at least one of which contains matter that tends to migrate, the improvement comprising a barrier layer that is intermediate the adjacent layers, that is impermeable to the migratory matter, and that is composed of a polyolefin containing a functional group selected from a group composed of acid or anhydride groups.
In the production of an ophthalmic lens structure wherein at least one organic monomeric material is cured adjacent to a layer of dissimilar organic material, wherein at least one of the organic materials contains matter that tends to migrate, the improvement that comprises applying a barrier layer, intermediate the dissimilar organic materials, that is impermeable to the migratory matter, and that is composed of a polyolefin containing a functional group selected from a group composed of acid and anhydride groups.
Dependencies are inferred from the claim text.