FIELD: optics.
SUBSTANCE: invention relates to a method for designing a mould for casting a semi-finished ophthalmic lens blank, a method for assembling a mould assembly and to a method of casting semi-finished lens blank. Method for designing a mould for casting a semi-finished ophthalmic lens blank, characterised by that surface of mould is designed so that said surface of mould substantially fits a predetermined closed curve representative of geometry of a gasket to be used in combination with mould. Said surface of mould is designed using an optimisation process, said predetermined closed curve being a constraint for optimisation process.
EFFECT: improved sealing of mould.
8 cl, 10 dwg
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