Net-molded optical articles and methods of making the same

Details Net-molded optical articles and methods of making the same Net-molded optical articles and methods of making the same

2011-07-05

2011-07-05

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

Reexamination Certificate

active

07971995

ABSTRACT:
An injection molding apparatus and method of use are provided whereby a net-molded optical article can be produced. Edge wave deviations are reduced by controlling the cooling profile of the resin. The apparatus can be configured to include at least one heat control element disposed adjacent to an edge of the mold cavity. After plasticized resin has been injected into the mold cavity, the edge of the mold cavity can be thermally regulated relative to the center of the cavity.

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International Search Report and Written Opinion received on Aug. 31, 2009 in corresponding application No. PCT/US2009/043078.
International Preliminary Report on Patentability dated Nov. 9, 2010 and issued in corresponding application No. PCT/US2009/043078.

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