Hybrid coating stack
First Claim
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1. A coating, comprising:
- a functional coating comprising;
a first dielectric layer comprising a first layer having a quarter wave optical thickness in the range of 0.1 to 1, and a second layer having a quarter wave optical thickness in the range of 0.1 to 1;
a first infrared reflective metal layer having a quarter wave optical thickness in the range of 0.005 to 0.1; and
a second dielectric layer comprising a first layer having a quarter wave optical thickness in the range of 0.05 to 0.5 and a second layer having a quarter wave optical thickness in the range of 0.1 to 1.5; and
a topcoat formed over at least a portion of the functional coating, the topcoat comprising;
a first topcoat layer comprising silica having a quarter wave optical thickness in the range of 0.5 to 1.5 with respect to a wavelength of 550 nm; and
a second topcoat layer comprising zinc stannate having a quarter wave optical thickness in the range of 0.5 to 1.5 with respect to a wavelength of 550nm, andwherein the topcoat is sufficiently thick so as to affect the optical properties of the coating.
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Abstract
A coating includes a functional coating, such as a solar control coating having at least one metal layer. A topcoat is formed over at least a portion of the functional coating. The topcoat includes a first topcoat layer having a thickness in the range of 0.5 QWOT to 1.5 QWOT with respect to a reference wavelength of 550 nm and a first refractive index, and a second topcoat layer having a thickness in the range of 0.5 QWOT to 1.5 QWOT with respect to a reference wavelength of 550 nm and a second refractive index different from the first refractive index.
40 Citations
11 Claims
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1. A coating, comprising:
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a functional coating comprising; a first dielectric layer comprising a first layer having a quarter wave optical thickness in the range of 0.1 to 1, and a second layer having a quarter wave optical thickness in the range of 0.1 to 1; a first infrared reflective metal layer having a quarter wave optical thickness in the range of 0.005 to 0.1; and a second dielectric layer comprising a first layer having a quarter wave optical thickness in the range of 0.05 to 0.5 and a second layer having a quarter wave optical thickness in the range of 0.1 to 1.5; and a topcoat formed over at least a portion of the functional coating, the topcoat comprising; a first topcoat layer comprising silica having a quarter wave optical thickness in the range of 0.5 to 1.5 with respect to a wavelength of 550 nm; and a second topcoat layer comprising zinc stannate having a quarter wave optical thickness in the range of 0.5 to 1.5 with respect to a wavelength of 550nm, and wherein the topcoat is sufficiently thick so as to affect the optical properties of the coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A coated article, comprising:
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a glass substrate; and a coating deposited over at least a portion of the substrate, the coating comprising; a functional coating comprising; a first dielectric layer comprising a first layer comprising zinc stannate having a quarter wave optical thickness in the range of 0.1 to 1, and a second layer comprising zinc oxide having a quarter wave optical thickness in the range of 0.1 to 1; a first infrared reflective metal layer comprising silver having a quarter wave optical thickness in the range of 0.005 to 0.1; and a second dielectric layer comprising a first layer comprising zinc oxide having a quarter wave optical thickness in the range of 0.05 to 0.5 and a second layer comprising zinc stannate having a quarter wave optical thickness in the range of 0.1 to 1.5; and a topcoat comprising a first topcoat layer and a second topcoat layer, wherein the first topcoat layer comprises silica having a quarter wave optical thickness in the range of 0.5 to 1.5 with respect to a reference wavelength of 550 nm, and wherein the second topcoat layer comprises zinc stannate having a quarter wave optical thickness in the range of 0.5 to 1.5 with respect to a wavelength of 550 nm. - View Dependent Claims (11)
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Specification