Composite glass with an intermediate film that changes colour depending on the viewing angle
AssigneeGiesecke+Devrient Currency Technology GmbH
InventorsMaik Rudolf Johann Scherer, Raphael Dehmel, Kai Herrmann Scherer, Daniel Lenssen, Michael Rahm, Mario Keller
Life of this patent
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Abstract
A composite glass comprises two glass and/or plastic plates and an intermediate foil arranged between the glass and/or plastic plates. The composite glass, due to the intermediate foil, is configured differently in a side-dependent manner, by appearing to a viewer more transparent from an inner side than from an outer side. The composite glass, due to the intermediate foil, appears to the viewer different in a viewing angle-dependent manner from the outer side.
Claims24
A composite glass comprising:
- a first plate, the first plate being a glass plate or a plastic plate;
- a second plate, the second plate being a glass plate or a plastic plate;
- and
- an intermediate foil arranged between the first plate and the second plate,
- wherein the composite glass, due to the intermediate foil, is configured in a side-dependent manner by appearing to a viewer more transparent from a first side than viewed from a second side,
- wherein the composite glass, due to the intermediate foil, is configured in an angle-dependent manner from the second side by appearing different from a first angle on the second side than from a second angle on the second side, and
- wherein the intermediate foil comprises an interference layer construction, the interference layer construction comprising at least three sublayers, at least one color hue being determined by the thickness of a spacer layer.
A composite glass comprising:
- a first plate, the first plate being a glass plate or a plastic plate;
- a second plate, the second plate being a glass plate or a plastic plate;
- and
- an intermediate foil arranged between the first plate and the second plate,
- wherein the composite glass, due to the intermediate foil, is configured in a side-dependent manner by appearing to a viewer more transparent from a first side than viewed from a second side,
- wherein the composite glass, due to the intermediate foil, is configured in an angle-dependent manner from the second side by appearing different from a first angle on the second side than from a second angle on the second side,
- wherein the intermediate foil comprises a relief structure that causes the angle-dependent manner of the composite glass due to the intermediate foil.
Dependencies are inferred from the claim text.