Colored facade element with composite pane structure

A facade element, comprising a coloring transparent or semi-transparent first pane and a mechanically supporting transparent second pane firmly connected to one another by a first intermediate layer, wherein the coloring transparent or semi-transparent first pane has a front surface arranged on a light incidence side and an opposite back surface, wherein at least one surface selected from the front surface and the back surface has at least one structured region, wherein at least one optical interference layer is arranged on the at least one surface selected from the front surface and the back surface for reflecting light within a predetermined wavelength range, wherein the at least one structured region has the following features:

• perpendicular to a plane of the coloring transparent or semi-transparent first pane, a height profile comprising peaks and valleys, wherein an average height difference between the peaks and the valleys is at least 2 μm,
• at least 50% of the at least one structured region is composed of segments being inclined with respect to the plane of the coloring transparent or semi-transparent first pane, wherein, with respect to the plane of the coloring transparent or semi-transparent first pane, at least 20% of the segments have an angle of inclination in a range from greater than 0° to a maximum of 15° and at least 30% of the segments have an angle of inclination in a range from greater than 15° to a maximum of 45°, wherein
• the segments are each planar and have a segment area of at least 1 μm2, wherein the segments each have an average roughness of less than 15% of a layer thickness of the at least one optical interference layer;
• wherein an optical interference layer of the at least one optical interference layer for reflecting light within the predetermined wavelength range is arranged on the back surface of the coloring transparent or semi-transparent first pane, wherein the back surface and/or the front surface each have the at least one structured region, wherein either the front surface has the at least one structured region or a further optical interference layer of the at least one optical interference layer for reflecting light within the predetermined wavelength range is arranged on the front surface;
• and
• wherein
• i) the back surface of the coloring transparent or semi-transparent first pane has no structured region and the front surface has the at least one structured region, wherein no optical interference layer is arranged on the front surface, or
• ii) the back surface of the coloring transparent or semi-transparent first pane has the at least one structured region and the front surface has the at least one structured region, wherein no optical interference layer is arranged on the front surface, or
• iii) the back surface of the coloring transparent or semi-transparent first pane has the at least one structured region and the front surface has no structured region, wherein no optical interference layer is arranged on the front surface, or
• iv) the back surface of the coloring transparent or semi-transparent first pane has the at least one structured region and the front surface has no structured region, wherein a further optical interference layer is arranged on the front surface.