Laminated pane with retardation plate
A laminated pane having a projection region and a main see-through region, includes an outer pane, at least one thermoplastic intermediate layer, a reflective layer, an opaque masking layer, an inner pane, an adhesive layer, and a λ/4 retardation plate, wherein the at least one thermoplastic intermediate layer is arranged between the outer pane and the inner pane, the projection region is arranged outside the main see-through region, the reflective layer is arranged at least in the projection region between the outer pane and the inner pane, the opaque masking layer is arranged at least in the projection region between the outer pane and the inner pane and, when viewed through the laminated pane, is arranged spatially behind the reflective layer, starting from the interior-side surface of the inner pane, and the λ/4 retardation plate is connected via the adhesive layer to the interior-side surface of the inner pane.
1 . A laminated pane having a projection region, a main see-through region, an upper edge, a lower edge and two lateral pane edges, at least comprising an outer pane, at least one thermoplastic intermediate layer, a reflective layer, an opaque masking layer, an inner pane, an adhesive layer, and a λ/4 retardation plate,
wherein
the outer pane has an exterior-side surface facing away from the at least one thermoplastic intermediate layer, and an interior-side surface facing the at least one thermoplastic intermediate layer, and the inner pane has an exterior-side surface facing the at least one thermoplastic intermediate layer and an interior-side surface facing away from the at least one thermoplastic intermediate layer,
the projection region is arranged outside the main see-through region,
the reflective layer is arranged at least in the projection region between the outer pane and the inner pane,
the opaque masking layer is arranged at least in the projection region between the outer pane and the inner pane and, when viewed through the laminated pane, is arranged spatially behind the reflective layer, starting from the interior-side surface of the inner pane,
the λ/4 retardation plate is connected via the adhesive layer to the interior-side surface of the inner pane and is arranged in a region of the laminated pane which, when viewed perpendicularly through the laminated pane, lies completely in the region in which the opaque masking layer is arranged, and
the projection region lies completely in the region of the laminated pane in which the λ/4 retardation plate is arranged, when viewed perpendicularly through the laminated pane.
2 . The laminated pane according to claim 1 , wherein the reflective layer is arranged substantially over the entire surface between the outer pane and the inner pane.
3 . The laminated pane according to claim 1 , wherein the reflective layer is arranged between the outer pane and the inner pane in a region of the laminated pane which, when viewed perpendicularly through the laminated pane, lies completely in the region in which the opaque masking layer is arranged.
4 . The laminated pane according to claim 1 , wherein the reflective layer is arranged between the inner pane and the at least one thermoplastic intermediate layer or between the outer pane and the at least one thermoplastic intermediate layer, or wherein the laminated pane comprises at least two thermoplastic intermediate layers and the reflective layer is arranged between two of the thermoplastic intermediate layers.
5 . The laminated pane according to claim 1 , wherein the adhesive layer is a thermoplastic polymer layer or an optically clear adhesive.
6 . The laminated pane according to claim 1 , wherein the projection region is arranged adjacent to the lower edge of the laminated pane.
7 . The laminated pane according to claim 1 , wherein the opaque masking layer is arranged at least partially in a peripheral edge region.
8 . The laminated pane according to claim 7 , wherein the opaque masking layer has in a section which overlaps with the projection region a greater width than in sections different therefrom.
9 . The laminated pane according to claim 1 , wherein the opaque masking layer is designed as an opaque cover print on the interior-side surface of the outer pane or as an opaquely colored region of the at least one thermoplastic intermediate layer.
10 . The laminated pane according to claim 1 , wherein the reflective layer is designed as a reflective coating or as a reflective film.
11 . The laminated pane according to claim 1 , additionally comprising a coating which is designed as a protective coating or an anti-reflection coating and is arranged on the surface of the λ/4 retardation plate facing away from the adhesive layer.
12 . A projection arrangement comprising:
a laminated pane according to claim 1 , and
an image display device which is directed toward the projection region and is arranged in such a way that the interior-side surface of the inner pane is the surface of the inner pane closest to the image display device.
13 . The projection arrangement according to claim 12 , wherein the image display device is a projector or a display.
14 . The projection arrangement according to claim 13 , wherein the display is an LCD display, a LED display, a microLED display, an OLED display or an electroluminescent display.
15 . The projection arrangement according to claim 13 , wherein the radiation strikes the laminated pane at an angle of incidence of 55° to 80°.
16 . The projection arrangement according to claim 15 , wherein the radiation strikes the laminated pane at an angle of incidence of 62° to 77°.
17 . The projection arrangement according to claim 12 , wherein the image display device emits s-polarized light.
18 . The projection arrangement according to claim 12 , wherein the image display device emits circularly polarized light.
19 . A method comprising providing a laminated pane according to claim 1 as a vehicle pane in means of transport for traffic on land, in the air or on water.
20 . The method according to claim 19 , wherein the vehicle pane is a windshield for a head-up display.