Method and apparatus for injection molding lenses

Details Method and apparatus for injection molding lenses Method and apparatus for injection molding lenses

B - Operations, Transporting

29

D

18/104

B29D 11/00 (2006.01) B29F 1/00 (1980.01)

Patent

CA 1093769

Abstract of the Disclosure A method and apparatus for injection molding thermoplastic lenses, such as prescription eyeglass lenses in a single injection molding operation into a finished single vision or multifocal blank which does not require additional molding or polishing. Movable optical inserts (dies) are forced apart by injected polycarbonate, then the inserts are urged together forcing a portion of the injected polycarbonate into a pocket.

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