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AssigneesCorporation De L'ecole Polytechnique De Montreal, Essilor International
InventorsMartin CARON, Karin SCHERER, Oleg ZABEIDA, Ludvik MARTINU, Jolanta KLEMBERG-SAPIEHA, Thomas SCHMITT
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The invention concerns an ophthalmic lens having an increased resistance to thermal and hygroscopic stresses, said ophthalmic lens comprising a substrate, at least one main face of which is coated with a siloxane-based anti-abrasion hardcoat, characterized in that said ophthalmic lens further comprises at least one protective layer of an organic-inorganic material directly in contact with said hardcoat, said protective layer of organic-inorganic material having a Young's modulus higher than 20 GPa, preferably of at least 25 GPa.
-15. (canceled)
An ophthalmic lens having an increased resistance to thermal and hygroscopic stresses, said ophthalmic lens comprising a substrate, at least one main face of which is coated with a siloxane-based anti-abrasion hardcoat, wherein said ophthalmic lens further comprises at least one protective layer of an organic-inorganic material directly in contact with said hardcoat, said protective layer of an organic-inorganic material having a Young's modulus higher than 20 GPa.
A process for increasing the resistance to thermal and hygroscopic stresses of an ophthalmic lens comprising a substrate, at least one main face of which is coated with a siloxane-based anti-abrasion hardcoat, comprising:
Dependencies are inferred from the claim text.