Net-molded optical articles and methods of making the same
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United States of America Patent
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Jul 5, 2011
Grant Date -
Nov 12, 2009
app pub date -
May 9, 2008
filing date -
May 9, 2008
priority date (Note) -
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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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