Surface modification of hydrophobic and/or oleophobic coatings
First Claim
1. A method for making an ophthalmic lens having a hydrophobic and/or oleophobic coating with reversibly reduced hydrophobicity, comprising the steps of:
- providing an optical lens;
applying a hydrophobic and/or oleophobic coating to the optical lens, the hydrophobic and/or oleophobic coating adhered to the optical lens and having a thickness greater than about 10 nm and having an excess portion of the coating that is mechanically removable from the optical lens, the excess portion of the coating having a surface; and
modifying the surface by ion bombardment to reduce hydrophobicity.
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Accused Products
Abstract
A hydrophobic and/or oleophobic coating system having a reversibly reduced hydrophobicity. A hydrophobic and/or oleophobic coating is applied to and is bonded or otherwise strongly adhered to a substrate, such as an optical lens. The coating has sufficient thickness to provide a weakly adhered, excess portion that is mechanically removable. The excess portion of the hydrophobic and/or oleophobic coating has a surface that is modified to reduce hydrophobicity, such as by ion bombardment. The hydrophobicity of the coating is restored by mechanical removal of the excess portion of the coating.
27 Citations
15 Claims
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1. A method for making an ophthalmic lens having a hydrophobic and/or oleophobic coating with reversibly reduced hydrophobicity, comprising the steps of:
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providing an optical lens; applying a hydrophobic and/or oleophobic coating to the optical lens, the hydrophobic and/or oleophobic coating adhered to the optical lens and having a thickness greater than about 10 nm and having an excess portion of the coating that is mechanically removable from the optical lens, the excess portion of the coating having a surface; and modifying the surface by ion bombardment to reduce hydrophobicity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for making an article having a hydrophobic and/or oleophobic coating with reversibly reduced hydrophobicity, comprising the steps of:
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providing a substrate; applying a hydrophobic and/or oleophobic coating to the substrate, the hydrophobic and/or oleophobic coating adhered to the substrate and having a thickness greater than about 10 nm and having an excess portion of the coating that is mechanically removable from the substrate, the excess portion of the coating having a surface; and modifying the surface to reduce hydrophobicity by treatment with high energy charged particles. - View Dependent Claims (15)
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Specification