Apparatus and method for making cast ophthalmic lenses

Details Apparatus and method for making cast ophthalmic lenses Apparatus and method for making cast ophthalmic lenses

B - Operations, Transporting

29

D

18/104

B29D 11/00 (2006.01) B29C 33/00 (2006.01)

Patent

CA 1162395

AO-3572 APPARATUS AND METHOD FOR MAKING CAST OPHTHALMIC LENSES ABSTRACT OF DISCLOSURE Cast multifocal lenses are produced from ledged casting pieces molded from a master die having a molding surface made up of juxtapositioned die components each precision surfaced to a curvature and finish corresponding to a multifocal surface desired to be cast upon a lens and relatively prearranged according to desired height and position of cast lens ledging.

374422

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