VEHICLE TRANSPARENCY
A vehicle roof transparency includes a first ply having a first visible light transmission and a second ply having a second visible light transmission, with the first visible light transmission being greater than the second visible light transmission. A solar control coating is formed over at least a portion of the first or second ply. An interlayer connects the first and second plies.
1 . A vehicle roof transparency, comprising:
a first ply having a first visible light transmission;
a second ply having a second visible light transmission, with the first visible light transmission being greater than the second visible light transmission;
a solar control coating located between the first ply and the second ply; and
an interlayer securing the first ply to the second ply.
2 . The transparency of claim 1 , wherein the first ply and the second ply comprise glass.
3 . The transparency of claim 1 , wherein at least the first ply is high visible light transmission glass.
4 . The transparency of claim 3 , wherein the glass has a visible light transmission of at least 87% at a reference wavelength of 550 nm.
5 . The transparency of claim 3 , wherein the glass has a visible light transmission of at least 91% at a reference wavelength of 550 nm.
6 . The transparency of claim 1 , wherein the solar control coating comprises two or more metallic layers.
7 . The transparency of claim 6 , wherein the solar control coating comprises three or more metallic layers.
8 . The transparency of claim 6 , wherein the metallic layers comprise metallic silver.
9 . The transparency of claim 1 , further including an antireflective coating over at least a portion of the second ply.
10 . The transparency of claim 1 , wherein the first and second plies comprise annealed glass.
11 . A vehicle roof transparency, comprising:
a first ply having a No. 1 surface and a No. 2 surface;
a second ply secured to the first ply and having a No. 3 surface and a No. 4 surface, wherein the No. 2 surface of the first ply faces the No. 3 surface of the second ply, and wherein the first ply has a visible light transmission greater than the visible light transmission of the second ply at a reference wavelength of 550 nm; and
a solar control coating provided on at least one of the first ply and the second ply or between the first ply and the second ply.
12 . The transparency of claim 11 , wherein the solar control coating is provided over at least one of the No. 2 surface or the No. 3 surface.
13 . The transparency of claim 11 , wherein the solar control coating is provided over at least one of the No. 1 surface or the No. 4 surface.
14 . The transparency of claim 11 , wherein the solar control coating is provided over at least one of the No. 2 surface or the No. 3 surface.
15 . The transparency of claim 11 , wherein the solar control coating is provided between the No. 2 and the No. 3 surface.
16 . The transparency of claim 11 , further including an antireflective coating provided over at least a portion of the No. 4 surface.
17 . The transparency of claim 16 , wherein the antireflective coating is a multi-layer coating comprising at least one layer comprising a material having an index of refraction of less than or equal to 1.75 and at least one layer comprising a material having an index of refraction of greater than 1.75.
18 . A vehicle roof transparency, comprising:
a first ply having a No. 1 surface and a No. 2 surface, the first ply comprising a high visible light transmission glass;
a second ply having a No. 3 surface and a No. 4 surface, the second ply comprising glass having a visible light transmission less than that of the first ply;
a solar control coating formed over at least a portion of the No. 2 surface of the first ply, the solar control coating comprising two or more infrared reflective metallic layers;
an interlayer bonding the first ply and the second ply such that the No. 2 surface faces the No. 3 surface; and
an antireflective coating provided over at least a portion of the No. 4 surface of the second ply.
19 . The transparency of claim 18 , wherein the first and second plies comprise annealed glass.
20 . The transparency of claim 18 , wherein the metallic layers comprise metallic silver.
21 . The transparency of claim 18 , wherein the first ply has a visible light transmission of at least 87% at a reference wavelength of 550 nm.
22 . The transparency of claim 18 , wherein the first ply has a visible light transmission of at least 91% at a reference wavelength of 550 nm.