Coated glass article
A coated glass article and a method for its production are provided. One or more coatings and layers are applied onto or disposed between a pair of glass sheets to produce such coated glass article that enhances an accuracy and reliability of a heads-up-display system and an optical sensor coupled thereto. More particularly, the coated glass article includes an antireflective layer to facilitate a light transmission of at least 80% for a plurality of wavelengths through the coated glass article and a visible light reflective layer to enhance a visible light reflectance of the coated glass article to between 8.0% and 10.0%.
1 . A coated glass article, comprising:
a first glass sheet;
an antireflective layer disposed adjacent at least a portion of the first glass sheet; and
a visible light reflective layer disposed over at least a portion of the antireflective layer, the visible light reflective layer having a refractive index of at least 1.6 and a thickness of no more than 30 nm;
wherein the coated glass article exhibits a light transmission of at least 80% for at least one wavelength of infrared light and a visible light reflectance of between about 8% and 10%.
2 . The coated glass article of claim 1 , wherein the first glass sheet is produced from a glass material having an iron content 100 ppm or less, preferably 10 ppm or less.
3 . The coated glass article of claim 1 , further comprising a second glass sheet, wherein the first and second glass sheets are joined together by an adhesive layer.
4 . The coated glass article of claim 3 , wherein the adhesive layer includes at least one ply of at least one of polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyvinyl chloride (PVC), polyurethane (PU), acoustic modified PVB and a liquid curable acrylic resin or wherein the adhesive layer comprises a plurality of plies including a first ply formed of PVB, a second ply formed of polyethylene terephthalate (PET), and a third ply formed of PVB.
5 . The coated glass article of claim 3 , further comprising at least one reflecting layer.
6 . The coated glass article of claim 5 , wherein the at least one reflecting layer is disposed adjacent at least a portion of one of the first sheet and the second sheet.
7 . The coated glass article of claim 5 , wherein the at least one reflecting layer comprises a metal material or a tin-doped indium oxide or a lanthanum hexaboride.
8 . The coated glass article of claim 5 , wherein the at least one reflecting layer includes at least one void formed therein.
9 . The coated glass article of claim 3 , wherein each of the first sheet and the second sheet includes a first major surface and a second major surface, and wherein the antireflective layer is disposed adjacent at least a portion of the second major surface of the second sheet.
10 . The coated glass article of claim 1 , wherein the antireflective layer has a thickness of about 120 nm to about 150 nm.
11 . The coated glass article of claim 1 , wherein the antireflective layer is formed of silicon dioxide (SiO 2 ) or titanium dioxide (TiO 2 ).
12 . The coated glass article of claim 1 , wherein the antireflective layer facilitates a light transmission of at least 94% for the at least one wavelength through the coated glass article.
13 . The coated glass article of claim 1 , wherein the at least one wavelength about 905 nm or 1550 nm.
14 . The coated glass article of claim 5 , further comprising an optical sensor disposed adjacent at least one of the antireflective layer and the visible light reflective layer, wherein the optical sensor is configured to emit a light beam having the at least one wavelength and is positioned in alignment with a void formed in the at least one reflecting layer of the coated glass article.
15 . The coated glass article of claim 1 , wherein the visible light reflective layer has a thickness in a range of about 6 nm to about 9 nm.
16 . The coated glass article of claim 1 , wherein the visible light reflective layer is a metal oxide having a refractive index of at least 1.6 and less than 1.8 and a thickness of no more than 30 nm or a refractive index of at least 1.8 and a thickness of no more than 20 nm.
17 . The coated glass article of claim 1 , wherein the visible light reflective layer is formed of tin oxide (SnO 2 ), aluminum oxide (Al 2 O 3 ), titanium dioxide (TiO 2 ), chromium oxide (Cr 2 O 3 ) or niobium oxide (NbO).
18 . The coated glass article of claim 1 , wherein the visible light reflective layer facilitates a visible light reflectance value of about 8.6% at an exterior surface of the coated glass article and a visible light reflectance value of about 8.6% at an interior surface of the coated glass article.
19 . The coated glass article of claim 1 , wherein the visible light reflective layer is disposed over at least a portion of the antireflective layer in an area of a heads-up-display (HUD) system.
20 . A method of producing a coated glass article, comprising:
providing a first sheet;
disposing an antireflective layer adjacent the first sheet; and
disposing a visible light reflective layer on at least a portion of the antireflective layer, the visible light reflective layer having a refractive index of at least 1.6 and a thickness of no more than 30 nm; wherein
the coated glass article exhibits a light transmission of at least 80% for at least one wavelength of infrared light and a visible light reflectance of between about 8% and 10%.
21 . A coated glass article, comprising:
a first glass sheet;
an antireflective layer disposed directly on at least a portion of the first glass sheet; and
a visible light reflective layer disposed directly on at least a portion of the antireflective layer, the visible light reflective layer having a refractive index of at least 1.6 and a thickness of no more than 30 nm;
wherein the coated glass article exhibits a light transmission of at least 80% for at least one wavelength of infrared light and a visible light reflectance of between about 8% and 10%.