Method for producing a hologram on a curved substrate plate, resulting substrate plate with hologram and a laminate, in particular a vehicle windscreen, containing said substrate plate

A method of producing a hologram on a curved substrate pane, the method comprising:

• providing the curved substrate pane with a substrate surface, an actual geometry of which is subject to a variance in tolerance compared to a predetermined target geometry;
• providing an inflatable cushion with a preshaped cushion surface which is shapeable by pressure and has been preshaped to the predetermined target geometry or with a predetermined variance from the predetermined target geometry;
• applying a holography master in a form of a flexible thin layer to the preshaped cushion surface;
• applying a hologram recording layer to the substrate surface;
• pressing or laying the holography master onto the hologram recording layer by way of the preshaped cushion surface shaped to the actual geometry, thereby achieving full-area contact between holography master and the hologram recording layer with an essentially constant predetermined layer thickness of the hologram recording layer;
• and
• exposing the hologram recording layer with a coherent light to form a hologram defined by the holography master in the hologram recording layer.