Contact lenses and means and methods of producing same

Details Contact lenses and means and methods of producing same Contact lenses and means and methods of producing same

B - Operations, Transporting

29

D

18/106

B29D 11/00 (2006.01) B29C 39/26 (2006.01) B29C 33/40 (2006.01)

Patent

CA 1328962

ABSTRACT OF THE DISCLOSURE New means and methods for casting optical lenses in which an integral lens blank-mold cup unit is created by placing liquid monomers in a cup mold which tightly adheres to polymerized lens material. A radial die is disposed upon the cup mold to contains the monomers during polymerization and to provide the polymerized material with an optical surface. A contact lens is manufactured from the integral lens blank-mold cup unit by machining off the first cup and then extraneous portions of the blank to create a finished lens.

599739

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