Adhesion of hydrophobic coatings on eyeglass lenses

• US 20080038483A1
• Filed: 05/25/2007
• Published: 02/14/2008
• Est. Priority Date: 11/25/2004
• Status: Abandoned Application

• Current Assignee: Rodenstock GmbH (Bridgepoint Advisers Group Limited)
• Original Assignee: Rodenstock GmbH (Bridgepoint Advisers Group Limited)
• Inventors: Stolz, Cecile, Tomalka, Silvia, Scherg, Gerd-Peter, Goetz, Baerbel
• Application Number:
  US11/753,729
• Publication Number:
  US 20080038483A1
• Time in Patent Office: Days
• US Class Current: 427/576
• CPC Class Codes: C03C 17/42 at least one coating of an organic material and at least one non-metal coating
• CPC Class Codes: C03C 2217/73 Anti-reflective coatings with specific characteristics
• CPC Class Codes: C03C 2217/76 Hydrophobic and oleophobic coatings
• CPC Class Codes: C03C 2218/32 After-treatment
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/046 Forming abrasion-resistant coatings; Forming surface-hardening coatings
• CPC Class Codes: C08J 7/123 Treatment by wave energy or particle radiation C08J7/18 takes precedence
• CPC Class Codes: G02B 1/11 Anti-reflection coatings
• CPC Class Codes: G02B 1/12 by surface treatment, e.g. by irradiation

Abstract

A method for producing an eyeglass lens provided with improved adhesion between an antireflective coating or mirror coating that is applied to the eyeglass lens. The lens may have a single-layer or multilayer structure and a hydrophobic and/or oleophobic coating. The method includes the steps of: providing an eyeglass lens; optionally applying a hard layer to the surface of the eyeglass lens; applying an antireflective coating or mirror coating encompassing one or several antireflective layers or mirror layers; performing a plasma treatment after applying the outermost antireflective layer; and applying a hydrophobic and/or oleophobic coating.

Claims

1. A method for manufacturing an ophthalmic lens with an antireflective or mirrorized coating and a hydrophobic or oleophobic coating or both a hydrophobic and an oleophobic coating, comprising the steps of:

(a) providing an ophthalmic lens,

(b) optionally applying a hard layer to the surface of the ophthalmic lens,

(c) applying an antireflective or mirrorized coating comprising one or more antireflective or mirrorized layers,

(d) performing a plasma treatment after applying the outermost antireflective layer, and

(e) applying a hydrophobic or oleophobic coating or a hydrophobic and an oleophobic coating.

2. The method of claim 1, wherein the ophthalmic lens is a plastic lens or a mineral lens.

3. The method of claim 1, wherein the hard layer is based on an acrylic polymer, a urethane polymer, a melamine polymer, a silicone resin or an inorganic material.

4. The method of claim 3, where the hard layer is based on quartz.

5. The method of claim 1, wherein the antireflective or mirrorized coating includes metals, nonmetals such as silicon or boron, oxides, fluorides, silicides, borides, carbides, nitrides or sulfides of metals and the aforementioned nonmetals.

6. The method of claim 1, wherein the hydrophobic or oleophobic coating comprises a silane having at least one group containing fluorine or a polyfluorinated or perfluorinated hydrocarbon compound or a combination of a fluorine and a polyfluorinated or perfluorinated hydrocarbon compound.

7. The method of claim 1, wherein the process gas of the plasma treatment step is selected from the group comprising argon, oxygen, nitrogen and CF₄ or a mixture of two or more thereof.

8. The method of claim 1, wherein the ionic energy in the plasma treatment step is adjusted in a range of from 1 eV to 1000 eV.

9. The method of claim 1, wherein the ionic current density in the plasma treatment step is adjusted in a range of from 10¹⁴ to 10¹⁹ ions/(cm²s).