High luminance coated glass
View Patent ↗A coating composition and related coated substrates are disclosed. The coating composition of the present invention includes a first dielectric layer having a thickness ranging from 380 Å to 430 Å; a first metal layer over the first dielectric layer having a thickness ranging from 60 Å to 130 Å; a first primer layer over the first dielectric layer having a thickness ranging from 10 Å to 30 Å; a second dielectric layer over the first primer layer having a thickness ranging from 880 Å to 1020 Å; a second metal layer over the second dielectric layer having a thickness ranging from 100 Å to 180 Å; a second primer layer over the second metal layer having a thickness ranging from 10 Å to 30 Å; and a third dielectric layer over the second primer layer having a thickness ranging from 240 Å to 520 Å.
1. A highly reflective coated substrate having a blue color, comprising:
a substrate; and
a coating formed on the substrate, the coating comprising:
a. a first dielectric layer comprising at least one metal oxide over the substrate and having a thickness ranging from 392 Å to 400 Å;
b. a first metal layer over the first dielectric layer and having a thickness ranging from 112 Å to 121 Å;
c. a first primer layer over the first metal layer and having a thickness ranging from 16 Å to 24 Å;
d. a second dielectric layer over the first primer layer and having a thickness ranging from 976 Å to 984 Å, said second dielectric layer being a single film, and comprising an alloy of an oxide of zinc and tin;
e. a second metal layer over the second dielectric layer and having a thickness ranging from 117 Å to 125 Å;
f. a second primer layer over the second metal layer and having a thickness ranging from 16 Å to 24 Å; and
g. a third dielectric layer comprising at least one metal oxide over the second primer layer and having a thickness ranging from 497 Å to 505 Å,
wherein the coating includes only two metal layers and the coating is configured to provide an L* of at least 48, an a* of greater than b*/2, and a b* of less than −15.
2. The coated substrate according to claim 1 , wherein the first and second metal layers are selected from gold, copper, silver or mixtures thereof.
3. The coated substrate according to claim 1 , wherein the first and third dielectric layers comprise an oxide selected from titanium, hafnium, zirconium, niobium, zinc, bismuth, lead, indium, tin, zinc as well as alloys and mixtures thereof.
4. The coated substrate according to claim 1 , wherein at least one of the first and third dielectric layers comprises an alloy of an oxide of zinc and tin.
5. The coated substrate according to claim 4 , wherein the alloy of an oxide of zinc and tin is zinc stannate.
6. The coated substrate according to claim 1 wherein the substrate is glass.
7. A laminated product having a blue color, comprising:
a first glass ply and a second glass ply, wherein at least one of the glass plies is coated with a coating comprising:
a. a first dielectric layer comprising at least one metal oxide over the substrate and having a thickness ranging from 392 Å to 400 Å;
b. a first metal layer over the first dielectric layer and having a thickness ranging from 112 Å to 121 Å;
c. a first primer layer over the first metal layer and having a thickness ranging from 16 Å to 24 Å;
d. a second dielectric layer over the first primer layer and having a thickness ranging from 976 Å to 984 Å, said second dielectric layer being a single film, and comprising an alloy of an oxide of zinc and tin;
e. a second metal layer over the second dielectric layer and having a thickness ranging from 117 Å to 125 Å;
f. a second primer layer over the second metal layer and having a thickness ranging from 16 Å to 24 Å; and
g. a third dielectric layer comprising at least one metal oxide over the second primer layer and having a thickness ranging from 497 Å to 505 Å,
wherein the coating includes only two metal layers and the coating is configured to provide an L* of at least 48, an a* of greater than b*/2, and a b* of less than −15.
8. The laminated product according to claim 7 , wherein the first and second metal layers are selected from gold, copper, silver or mixtures thereof.
9. The laminated product according to claim 7 , wherein the first and third dielectric layers comprise an oxide selected from titanium, hafnium, zirconium, niobium, zinc, bismuth, lead, indium, tin, zinc as well as alloys and mixtures thereof.
10. The laminated product according to claim 7 , wherein at least one of the first and third dielectric layers comprises an alloy of an oxide of zinc and tin.
11. The laminated product according to claim 10 , wherein the alloy of an oxide of zinc and tin is zinc stannate.
12. The laminated product according to claim 7 , wherein the first and second primer layers comprise titania.
13. The laminate according to claim 7 wherein the laminated product is a windshield.
14. The coated substrate according to claim 1 , wherein the substrate is an automotive window having an Lta in the range of 20% to 35%.
15. The laminated product of claim 7 , wherein the product is an automotive privacy glass having an Lta in the range of 20% to 35%.
16. The coated substrate according to claim 1 , wherein the alloy of an oxide of zinc and tin, of said second dielectric layer, is zinc stannate.
17. The laminated product according to claim 7 , wherein the alloy of an oxide of zinc and tin, of said second dielectric layer, is zinc stannate.