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.
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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