Cast mould and method for manufacturing contact or intraocular lenses
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Jun 11, 2012
filing date -
Jun 9, 2011
priority date (Note) -
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Abstract
A cast mold for manufacturing a contact lens or an intraocular lens, wherein the cast mold is provided with a central part and a bearing ring and a flexible connection between the central part and the bearing ring. Further, an injection mold is provided for manufacturing such a cast mold and a method for manufacturing such a cast mold. The injection mold is provided with a mold cavity with a plunger biased by a spring towards the mold cavity which serves for compensating shrinkage which occurs during the curing of the plastic injected into the injection mold. Also described is a method for manufacturing a contact lens or intraocular lens with the aid of the cast mold, as well as a contact lens or intraocular lens obtained with this method.
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