Method of removing molded lenses from the mold

Details Method of removing molded lenses from the mold Method of removing molded lenses from the mold

B - Operations, Transporting

29

D

18/104

B29D 11/00 (2006.01)

Patent

CA 1119763

A METHOD OF REMOVING MOLDED LENSES FROM THE MOLD ABSTRACT OF THE DISCLOSURE: A method of making plastic lenses by casting a liquid monomer in a container having the required optical curve on the bottom of the container, polymerizing the mono- mer to form a solid having an optical surface formed within the container and cutting a second optical surface on the solid lens material with the container supporting the lens material during the cutting and polishing operation. Removing the lens from the casting container by applying force against the sides of the container to distort the container and stretching the surface to effect the release of the lens.

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