Method for producing an ophthalmic lens comprising a base lens and a film structure
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United States of America Patent
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Mar 15, 2016
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app pub date -
Dec 8, 2010
filing date -
Dec 8, 2010
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Abstract
A method for producing an ophthalmic lens comprised of a base lens and a film structure bound to said base lens includes a pressure-free heating. Said heating is performed after assembling the film structure with a semi-finished lens (1), and before said semi-finished lens is machined for obtaining the base lens. Although a maximum heating temperature is higher than a glass-transition temperature of the semi-finished lens, no image distortion and optical aberration is produced for the final ophthalmic lens. The maximum heating temperature is also lower than a glass-transition temperature of the film structure.
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