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USING HIGHER ORDER MATHEMATICAL FUNCTIONS TO CREATE ASYMMETRIC MOLDING BACK PIECES
USING HIGHER ORDER MATHEMATICAL FUNCTIONS TO CREATE ASYMMETRIC MOLDING BACK PIECES
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机译:使用高阶数学函数创建不对称模制后件
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摘要
This invention is related to creation of a mold for an ophthalmic lens using higher order mathematical functions, such as non-uniform rational b splines (NURBs), to create surfaces that do not contact fluid optical material, such as molding back pieces. In particular, the present invention optimizes the flow of mold material. Additionally, use of the present invention creates substantially uniform thickness of the mold, minimizing optical distortions.
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