Simulated high refractive index glass
View Patent ↗A method for modifying the appearance of a substrate is disclosed. The method includes providing a substrate having first and second opposing surfaces and depositing a reflectance modifying coating on at least a portion of the first surface of the substrate, wherein the second surface has a visible light reflectance (R 1 ) ranging from 5 to 20 percent.
1. A method for modifying the appearance of a substrate comprising:
providing a substrate having first and second opposing surfaces; and
depositing a reflectance modifying coating on at least a portion of the first surface of the substrate, wherein the second surface has a visible light reflectance (R1) ranging from 5 to 20 percent, wherein the reflectance modifying coating provides the coated article with a ΔE reflectance of less than or equal to 25 and a ΔE transmittance of less than or equal to 8.
2. The method according to claim 1 , wherein the visible light reflectance from the second surface ranges from 9 to 15 percent.
3. The method according to claim 1 , wherein the reflectance modifying coating has a Δn of less than or equal to 0.35 at a wavelength ranging from 370 nm to 700 nm.
4. The method according to claim 1 , wherein the reflectance modifying coating has a refractive index ranging from 1.7 to 2.2 at 550 nm.
5. The method according to claim 1 , wherein the reflectance modifying coating is selected from Al 2 O 3 , SnO 2 , Ta 2 O 5 , TiO 2 , ZrO 2 , ZnO and Zn x Sn 1−x O 2−x where x is greater than 0 but less than 1, and mixtures thereof.
6. The method according to claim 1 , wherein the step of depositing is accomplished via a CVD process.
7. The method according to claim 1 , wherein the reflectance modifying coating has a thickness equal to or less than 200 Å.
8. The method according to claim 7 , wherein the reflectance modifying coating has a thickness ranging from 50 Å to 175 Å.
9. The method according to claim 1 , wherein the substrate is glass.
10. The method according to claim 9 , wherein the substrate is a glass float ribbon.
11. A method for modifying the appearance of a substrate comprising:
providing a substrate having first and second opposing surfaces; and
depositing a reflectance modifying coating by a CVD process on at least a portion of the first surface of a substrate, wherein the second surface has a visible light reflectance (R 1 ) ranging from 5 to 20 percent, wherein the reflectance modifying coating provides the coated article with a ΔE reflectance of less than or equal to 25 and a ΔE transmittance of less than or equal to 8.
12. The method according to claim 11 , wherein the reflectance modifying coating is selected from Al 2 O 3 , SnO 2 , Ta 2 O 5 , TiO 2 , ZrO 2 , ZnO and Zn x Sn 1−x O 2−x where x is greater than 0 but less than 1 and mixtures thereof.
13. A method for providing a brilliant appearance to an automotive vision panel, the method comprising:
providing an automotive vision panel having a first surface and a second surface; and
depositing a reflectance modifying coating on at least a portion of the first surface of the vision panel, wherein the reflectance modifying coating comprises at least one material having a refractive index in the range of 1.7 to 2.2 at a wavelength of 550 nm, wherein the reflectance modifying coating has a thickness of less than or equal to 200 Å, wherein the reflectance modifying coating provides a Δn of less than or equal to 0.30 over a range of 370 nm to 700 nm, wherein the reflectance modifying coating provides a ΔE reflectance of less than or equal to 25 and a ΔE transmittance of less than or equal to 8, and wherein the reflectance modifying coating provides the second surface with a visible light reflectance in the range of 5 to 20 percent.