Cast resin lenses

Details Cast resin lenses Cast resin lenses

B - Operations, Transporting

29

D

18/104

B29D 11/00 (2006.01) B29C 35/02 (2006.01) C08J 3/24 (2006.01)

Patent

CA 1135464

Abstract Of The Disclosure The method of making a post-cured cast resin lens comprising the steps of: casting an allyl diglycol carbonate resin in a mold to the shape desired of the lens; partially curing the resin in the mold to produce a lens body; removing the partially cured lens body from the mold; coating the partially cured lens body with a readily removable material which is impervious to oxygen; exposing the coated lens body to a post-curing temperature above room temperature until substantially complete polymerization of all portions and surfaces of the lens body beneath the coating takes place; and removing the coating for exposure and use of the post-cured lens which features high surface cure and abrasion resistance,

361576

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