Method for obtaining a lens apt to trimming
The invention concerns a method for treating an ophthalmic lens comprising two main sides and having at least one side comprising an organic or mineral external layer coated with a MgF 2 temporary protective layer, wherein treating comprises depositing the MgF 2 temporary protective layer on the ext...
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Main Authors | , |
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Format | Patent |
Language | English French German |
Published |
12.08.2009
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Subjects | |
Online Access | Get full text |
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Summary: | The invention concerns a method for treating an ophthalmic lens comprising two main sides and having at least one side comprising an organic or mineral external layer coated with a MgF 2 temporary protective layer, wherein treating comprises depositing the MgF 2 temporary protective layer on the external layer through vacuum evaporation at low speed, i.e. a speed lower than 0.5 nm/s. The invention also relates to an ophthalmic lens comprising a hydrophobic and/or oilophobic coating layer, which has been rendered apt to trimming by the deposition of a MgF 2 temporary protective layer on said hydrophobic and/or oilophobic coating layer using the above method. |
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Bibliography: | Application Number: EP20090161291 |