Heads-up display and coating therefor
A laminate including: a first ply having a first surface and a second surface, where the first surface is an outer surface of the laminate; a second ply having a third surface facing the second surface and a fourth surface opposite the third surface, where the fourth surface is an inner surface of the laminate; an interlayer between the plies; and an enhanced p-polarized reflective coating positioned over at least a portion of a surface of the plies. When the laminate is contacted with radiation having p-polarized radiation at an angle of 60° relative to normal of the laminate, the laminate exhibits a LTA of at least 70% and a reflectivity of the p-polarized radiation of at least 10%. A display system and method of projecting an image in a heads-up display is also disclosed.
1. A laminate having enhanced p-polarized radiation reflecting properties comprising:
a first ply comprising a first surface and a second surface opposite the first surface, wherein the first surface comprises an outer surface of the laminate;
a second ply comprising a third surface adjacent the second surface and a fourth surface opposite the third surface, wherein the fourth surface comprises an inner surface of the laminate;
an interlayer positioned between the first ply and the second ply; and
an enhanced p-polarized reflective coating positioned over at least a portion of at least one of the surfaces of the first ply and/or second ply, wherein the enhanced p-polarized reflective coating comprises:
a base layer positioned over the portion of the at least one of the surfaces;
at least one metal functional layer positioned over at least a portion of the base layer, the at least one metal functional layer configured to provide reflectance of electromagnetic radiation in at least a portion of the infrared region of the electromagnetic spectrum; and
at least one phase adjustment layer positioned over at least a portion of the at least one metal functional layer;
wherein, when contacted with radiation from a radiation source, the laminate exhibits a luminous transmittance using standard illuminate A (LTA) value of at least 70% and a reflectivity of at least 10%.
2. The laminate of claim 1 , wherein the base layer comprises: a first film comprising a metal alloy oxide film; and a second film positioned over the first film, of the base layer, the second film of the base layer comprising an oxide mixture film.
3. The laminate of claim 1 , further comprising at least one sacrificial layer positioned between the at least one metal functional layer and the at least one phase adjustment layer.
4. The laminate of claim 1 , wherein the base layer has a thickness of 350-500 angstroms.
5. The laminate of claim 1 , further comprising an anti-reflective coating positioned over at least a portion of the first surface or the fourth surface.
6. The laminate of claim 5 , wherein the anti-reflective coating comprises a multi-layer anti-reflective coating having one or more metal alloy oxide layers and one or more metal oxide layers.
7. The laminate of claim 6 , wherein the multi-layer anti-reflective coating comprises: a first layer that is a metal alloy oxide layer; a second layer that is a metal oxide layer; a third layer that is a metal alloy oxide layer; and a fourth layer that is a metal oxide top layer.
8. The laminate of claim 5 , wherein the enhanced p-polarized reflective coating is positioned over at least a portion of the second surface and the anti-reflective coating is positioned over at least a portion of the fourth surface.
9. The laminate of claim 1 , wherein the enhanced p-polarized reflective coating comprises:
a first metal functional layer positioned over at least a portion of the base layer;
a first phase adjustment layer positioned over at least a portion of the first metal functional layer; and
a second metal functional layer positioned over at least a portion of the second metal functional layer.
10. The laminate of claim 9 , wherein the enhanced p-polarized reflective coating further comprises:
a second phase adjustment layer positioned over at least a portion of the second metal functional layer; and
a third metal functional layer positioned over at least a portion of the second phase adjustment layer.
11. The laminate of claim 9 , wherein the enhanced p-polarized reflective coating further comprises a topcoat layer positioned over at least a portion of the second metal functional layer.
12. The laminate of claim 11 , wherein the enhanced p-polarized reflective coating further comprises an overcoat positioned over at least a portion of the topcoat layer.
13. The laminate of claim 9 , wherein the enhanced p-polarized reflective coating further comprises a first sacrificial layer positioned between the first metal functional layer and the first phase adjustment layer.
14. The laminate of claim 10 , wherein the enhanced p-polarized reflective coating further comprises a second sacrificial layer positioned between the second metal functional layer and the second phase adjustment layer.
15. The laminate of claim 14 , wherein the enhanced p-polarized reflective coating further comprises a third sacrificial layer positioned over at least a portion of the third metal functional layer.
16. A display system for projecting an image comprising:
a laminate having enhanced p-polarized radiation reflecting properties comprising:
a first ply comprising a first surface and a second surface opposite the first surface, wherein the first surface comprises an outer surface of the laminate;
a second ply comprising a third surface adjacent the second surface and a fourth surface opposite the third surface, wherein the fourth surface comprises an inner surface of the laminate;
an interlayer positioned between the first ply and the second ply; and
an enhanced p-polarized reflective coating positioned over at least a portion of at least one of the surfaces of the first ply and/or the second ply, wherein the enhanced p-polarized reflective coating comprises:
a base layer positioned over the portion of the at least one of the surfaces;
at least one metal functional layer positioned over at least a portion of the base layer, the at least one metal functional layer configured to provide reflectance of electromagnetic radiation in at least a portion of the infrared region of the electromagnetic spectrum; and
at least one phase adjustment layer positioned over at least a portion of the at least one metal functional layer;
wherein, when contacted with radiation from a radiation source, the laminate exhibits a luminous transmittance using standard illuminate A (LTA) value of at least 70% and a reflectance of at least 10%; and
a radiation source directed at the laminate.
17. The display system of claim 16 , wherein the base layer comprises: a first film comprising a metal alloy oxide film; and a second film positioned over the first film, of the base layer, the second film of the base layer comprising an oxide mixture film.
18. The display system of claim 16 , wherein the enhanced p-polarized reflective coating further comprises:
a first metal functional layer positioned over at least a portion of the base layer;
a first phase adjustment layer positioned over at least a portion of the first metal functional layer; and
a second metal functional layer positioned over at least a portion of the second metal functional layer.
19. The display system of claim 16 , wherein the display system is a heads-up display in a vehicle.
20. The display system of claim 16 , further comprising an anti-reflective coating positioned over at least a portion of the first surface or the fourth surface.
21. The display system of claim 20 , wherein the anti-reflective coating comprises a multi-layer anti-reflective coating having one or more metal alloy oxide layers and one or more metal oxide layers.
22. The display system of claim 21 , wherein the multi-layer anti-reflective coating comprises: a first layer that is a metal alloy oxide layer; a second layer that is a metal oxide layer; a third layer that is a metal alloy oxide layer; and a fourth layer that is a metal oxide top layer.
23. The display system of claim 20 , wherein the enhanced p-polarized reflective coating is positioned over at least a portion of the second surface and the anti-reflective coating is positioned over at least a portion of the fourth surface.