Patent DE-102007042244-A1 (DE)
Title: Semi-transparent facade element useful in shop-window with thermal insulation for the external area, comprises first and second disk-shaped elements, and a device for connecting the disk-shaped elements with an interval to each other
Inventor: WALTHER MARTEN
IPC: C03C17/00
Filed: 2007-09-06
Abstract: The semi-transparent facade element useful in shop-window with thermal insulation for the external area, comprises a first- (10) and a second disk-shaped element (20), and a device (105) for connecting the disk-shaped elements with an interval to each other. The disk-shaped elements partially have a coating, which leads to a color effect in the visible wavelength region for a viewer. The first disk-shaped element comprises a first substrate with a first- (1) and a second surface (2), which is turned to the second disk-shaped element. The second disk-shaped element comprises a second substrate. The semi-transparent facade element useful in shop-window with thermal insulation for the external area, comprises a first- (10) and a second disk-shaped element (20), and a device (105) for connecting disk-shaped elements with an interval to each other. The disk-shaped elements partially have a coating, which leads to a color effect in the visible wavelength region for a viewer. The first disk-shaped element comprises a first substrate with a first- (1) and a second surface (2), which is turned to the second disk-shaped element. The second disk-shaped element comprises a second substrate with a third- (3) and a fourth surface (4). The absorption of the coating in the visible wavelength region is less than 1% of the light incident on the coating. A transition of high reflectivity to a low reflectivity is set within the visible wavelength region of 420-700 nm through the coating and causes color effect. The coating has two sub-layers. A second sub-layer is applied on a first sub-layer. The second sub-layer is the last layer of the coating turned to the gaseous medium and is T-layer or M-layer with a refractive index. The refractive index (n h) of the T-layer is 1.9-2.3, and the refractive index (n m) of the M-layer is 1.6-1.8. The first- and/or the second sub-layer consist of several individual layers. The third surface is turned to the second surface of the first disk-shaped element. The coating is applied on the first surface and/or the second surface of the first substrate. The substrates have boundary with a laminated glass and with the coating. The second surface has a coating with low emissivity and/or a sun-protective layer. The third surface has a further coating, which is a thermal-protective layer. The coating is applied on the third- and/or the fourth surface. The first- and/or the second substrate is a single pane glass, a single pane security glass, an annealed single pane glass, a composite safety glass, a composite safety glass having a single pane security glass and/or a composite safety glass having an annealed single pane glass. The disk-shaped elements are a flat disk or a curved disk. The connecting device comprises a metal spacer element and a sealing. The coating and/or further coating are a layer applied by sputtering or by spraying and are an immersion layer. The first- and/or the second disk-shaped element comprise lamp, which is a light emitting diode.