Anti-static anti-reflection coating
First Claim
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1. A method of fabricating a high transmittance ophthalmic lens which comprises the steps of:
- providing a transparent ophthalmic lens; and
forming, on a surface of said ophthalmic lens, a transparent, electrically conductive and substantially static resistant anti-reflection coating by reacting a metal with an effective non-stoichiometric amount of oxygen such that the coating comprises at least one layer of electrically conductive metal oxide material.
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Abstract
An anti-reflection coating that is soil resistant and easy to maintain is provided. The coating includes a multilayer film having alternating layers of high and low refractive index materials that comprise electrically conductive metal oxides. The film is formed by reacting metal with non-stoichiometric amounts of oxygen such that the coating has one or more layers of electrically conductive metal oxide material. The coating is particularly suited for ophthalmic applications.
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Citations
47 Claims
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1. A method of fabricating a high transmittance ophthalmic lens which comprises the steps of:
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providing a transparent ophthalmic lens; and forming, on a surface of said ophthalmic lens, a transparent, electrically conductive and substantially static resistant anti-reflection coating by reacting a metal with an effective non-stoichiometric amount of oxygen such that the coating comprises at least one layer of electrically conductive metal oxide material. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of fabricating a high transmittance ophthalmic lens which comprises the steps of:
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providing a transparent ophthalmic lens; and forming, on a surface of said ophthalmic lens, a transparent, multilayer, substantially static resistant, anti-reflection coating wherein at least one layer is electrically conductive by reacting a metal with an effective non-stoichiometric amount of oxygen such that the coating comprises at least one layer of electrically conductive metal oxide material. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A high transmittance ophthalmic lens comprising:
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an ophthalmic lens substrate; and a transparent, substantially static resistant multilayer film comprising alternating layers of high refractive index and low refractive index materials, wherein at least one layer of the multilayer film is electrically conductive wherein the multilayer film comprises alternating high and low refractive index materials such that each layer has a refractive index different from that of any adjoining layer, wherein the index of refraction of each low refractive index material is less than about 1.5 at a wavelength of about 550 nm, wherein the index of refraction of each high refractive index material is greater than about 2.0 at a wavelength of about 550 nm, and wherein said at least one electrically conductive layer comprise non-stoichiometric metal oxides. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An ophthalmic lens fabricated by a process that comprises the steps of:
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providing a transparent ophthalmic lens substrate; and depositing, onto a surface of said substrate, a transparent, substantially static resistant multilayer anti-reflection coating wherein at least one layer is electrically conductive wherein the step of depositing said coating comprises reacting metal with an effective non-stoichiometric amount of oxygen to form a layer of electrically conductive metal oxide. - View Dependent Claims (36, 37, 38, 39)
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40. An ophthalmic lens fabricated by a process that comprises the steps of:
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providing a transparent ophthalmic lens substrate; and depositing, onto a surface of said substrate, a transparent, substantially anti-static multilayer film comprising alternating layers of high refractive index and low refractive index materials wherein at least one layer is electrically conductive wherein the multilayer film comprises;
alternating high and low refractive index materials such that each layer has a refractive index different from that of any adjoining layer, wherein the index of refraction of each low refractive index material is less than about 1.5 at a wavelength of about 550 nm, wherein the index of refraction of each high refractive index material is greater than about 2.0 at a wavelength of about 550 nm. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47)
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Specification