Composite ophthalmic lens

Details Composite ophthalmic lens Composite ophthalmic lens

B - Operations, Transporting

29

D

B29D 11/00 (2006.01) B32B 17/10 (2006.01) C08J 3/24 (2006.01) C08L 63/00 (2006.01) G02C 1/00 (2006.01)

Patent

CA 2050515

ABSTRACT An improvement in the epoxy plastic element of a laminated, glass-plastic, ophthalmic lens structure, and a method of effecting the improvement, are disclosed. The improved element is cast from a casting mix in which the ingredients are maintained in certain relationships to each other to provide an optically clear casting essentially free of striations. The cast material is gelled at a low temperature not over about 100°C, and may then be cured at a temperature up to 200° for a period of at least two hours.

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