BIRD PROTECTION GLASS

Abstract

A bird protection glass includes a glass pane with a periodically repeating dot pattern, the reflection properties of which differ from those of the glass pane. In order to be effective, known bird protection glass had to be printed relatively densely, which compromised the visual appearance and transparency. The task of designing a bird protection glass so that it is highly effective, on the one hand, and only slightly compromises the transparent effect of the glass, on the other, is realized in that a maximum of 5% of the surface of glass pane is covered with the dot pattern.

Claims

1. A bird protection glass, having a glass pane with a periodically repeating dot pattern, whose reflection properties differ from reflection properties of the glass pane, a maximum of 5% of the surface of glass pane being covered with the dot pattern, wherein the dot pattern is implemented in black or white.

2. The bird protection glass according to claim 1, wherein a maximum of 2% of the surface of the glass pane is covered with the dot pattern.

3. The bird protection glass according to claim 2, wherein a maximum of 1% of the surface of the glass pane is covered with the dot pattern.

4. The bird protection glass according to claim 1, wherein the dot pattern consists of round dots.

5. The bird protection glass according to claim 1, wherein the dot pattern consists of square dots.

6. The bird protection glass according to claim 1, wherein a distance between adjacent dots, measured from center to center of the adjacent dots is at least seven times the diameter or side length of each dot.

7. The bird protection glass according to claim 6, wherein the distance between adjacent dots, measured from center to center of the adjacent dots, is at least 10 times the diameter or side length of each dot.

8. The bird protection glass according to claim 1, wherein the dot pattern has a gloss level of at least 60%.

9. The bird protection glass according to claim 1, wherein the dot pattern contains metallic particles.

10. The bird protection glass according to claim 1, wherein the dot pattern is applied to the glass panes by baking.

11. The bird protection glass according to the claim 1, wherein the dot pattern is introduced into the glass pane by lamination.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Two embodiment examples of the invention are further described below with reference to the accompanying drawings. These show:

[0019] FIG. 1 a plan view of part of a glass pane for bird protection according to the invention with a dot pattern of squares;

[0020] FIG. 2 a glass pane according to FIG. 1 in which the dot pattern consists of round dots instead of squares.

DETAILED DESCRIPTION

[0021] The glass pane 1 consists, for example, of float glass or another glass suitable for glazing of buildings in the glass pane 1 for bird protection glass depicted schematically in FIG. 1. This is a fully transparent glass, which—depending on the wishes of the client or architect—can also be tinted or coated. The glass pane 1 has a periodically repeating dot pattern and specifically a dot pattern consisting of small squares 3 in the depicted embodiment example. The squares are arranged with a double mirror symmetry so that rows and columns produce identical squares. The side length 5 of each square dot 3 is 12 mm, and the distance 6 between adjacent square dots 3 is 90 mm, measured center to center. This produces a degree of coverage of only 1.8%. This fraction of the glass pane 1 is therefore covered with the dot pattern of square dots 3. The distance 6 between adjacent dots, which is defined as the center-to-center distance 6 of adjacent dots 3 from each other, is over seven times the side length 5 of each square dot 3 in the depicted embodiment example.

[0022] In another embodiment, shown in FIG. 2, circular dots 2 are applied to the glass pane 1 instead of square dots 3. In this embodiment example, the surface of the glass pane 1 is doubly axially symmetrical in the same way, i.e., covered with round dots 2 arranged in rows and columns. The diameter of each round dot 2 is 9 mm and the center-to-center distance 6 is 90 mm. The distance 6 between adjacent dots 2 in this embodiment is therefore ten times the diameter 4 of each round dot 2. The total coverage in this embodiment example is only 0.8% of the surface of glass pane 1.

[0023] In both embodiment examples, both according to FIG. 1 and FIG. 2, the dot patterns have a gloss level of at least 60%. However, the gloss level can be higher or lower.

[0024] The dot pattern preferably but not necessarily has metallic particles, consisting of gold, silver or other metals.

[0025] The dot pattern in both embodiments can be applied to glass pane 1, for example, by baking, or introduced into glass pane 1 by laminating. The dots 3 or 2 can be implemented in a black color or a white color in advantageous embodiments both in the embodiments according to FIG. 1 and according to FIG. 2.

[0026] Experiments with the flight tunnel described in the introduction have shown that in the embodiment according to FIG. 1 (square dots 3) only 10% of the birds are directed toward the bird protection glass under test. This results in an efficiency of 90%.

[0027] In corresponding experiments with the bird protection glass according to FIG. 2 (round dots), only 14% of the tested birds flew toward the bird protection glass, which gives an efficiency of 86%.

[0028] It was therefore surprisingly shown that covering surfaces of well below 5%, in one case 1.8% and in the other case only 0.8%, are sufficient to achieve extremely satisfactory results in the test with the employed dot pattern.