Non-glare coating
First Claim
1. A coating for reducing specular reflection on the exterior surface of optical glass screens comprising a solid mixture of partially hydrolized metal alkoxide polymer, the metal alkoxide polymer having the general formula M(OR)4 where M is selected from the group consisting of silicon, titanium and zirconium and a solution wherein the metal alkoxide polymer comprises SiO2 and ZrO2 and wherein the SiO2 forms approximately 85% of the solid mixture by weight.
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Accused Products
Abstract
A coating for reducing specular reflection on optical glass screens comprises a partially hydrolized metal alkoxide polymer. These alkoxides have the general formula M(OR)4 where M is selected from the group consisting of silicon, titanium and zirconium where R is alkyl with 1 to 6 carbon. The equivalent titanium and/or zirconium oxides is about 15% of total solids by weight. A presently preferred coating mixture is prepared by dissolving tetraethyl orthosilicate in alcohol, at an elevated temperature; gradually adding a mixture of nitric acid and water; gradually adding titanium butoxide and/or zirconium n-propoxide; and, adding and mixing additional water and alcohol. The coating is applied by a method comprising the steps of cleaning the surface of the optical glass screen; preheating the glass screen; coating the solution onto the glass screen; and, baking the glass screen and solution, at a temperature high enough to drive off the solvent and bond the coating mixture to the glass surface.
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5 Claims
- 1. A coating for reducing specular reflection on the exterior surface of optical glass screens comprising a solid mixture of partially hydrolized metal alkoxide polymer, the metal alkoxide polymer having the general formula M(OR)4 where M is selected from the group consisting of silicon, titanium and zirconium and a solution wherein the metal alkoxide polymer comprises SiO2 and ZrO2 and wherein the SiO2 forms approximately 85% of the solid mixture by weight.
Specification