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US 3,940,304 AGranted
Method of making composite light-polarizing element
AssigneePolaroid Corporation
InventorNorman W. Schuler
Life of this patent
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Abstract
A composite light-polarizing lens comprising a light-polarizing element having coated on each surface thereof a layer which enhances adhesion between in situ formed lens components and inhibits migration of lens constituents between said light-polarizing elements and said in situ polymerized components during formation of said lens.
Claims4
The method of manufacturing synthetic plastic light-polarizing ophthalmic lens which comprises:
- applying as a continuous coating on each surface of a light-polarizing element a layer which enhances adhesion between said light-polarizing element and subsequently in situ polymerized lens components and significantly inhibits migration of lens constituents to said light-polarizing element during polymerization;
- securing said coated light-polarizing element into a mold;
- providing a continuous layer of a synthetic plastic monomeric material over the entire surface of each side of said light-polarizing element which will comprise the light transmission area of the ultimately formed lens;
- and
- causing said monomeric material to polymerize thereby forming a composite light-polarizing ophthalmic lens.
2 more elements
Dependencies are inferred from the claim text.