Corning Incorporated
UV blocking coatings for lens assemblies

Abstract:

An aqueous formulation and method of making an ultraviolet light blocking coating from an aqueous formulation having from greater than or equal to 15 wt % to less than or equal to 65 wt % water, from greater than or equal to 30 wt % to less than or equal to 70 wt % metal oxide particles, and from greater than or equal to 5 wt % to less than or equal to 35 wt % aminoalkylsilsesquioxane oligomers. An optical device including a housing, a lens element, potting material positioned between the lens element and the housing, and an ultraviolet light blocking coating positioned between the lens element and the potting material. The ultraviolet light blocking coating has from greater than or equal to 30 wt % to less than or equal to 90 wt % metal oxide particles and from greater than or equal to 10 wt % to less than or equal to 70 wt % silsesquioxane.