Glazing for minimizing bird collisions

Patent metadata

Field	Value
Publication number	US-12527313-B2
Application number	US-202118042313-A
Country	US
Kind code	B2
Filing date	Aug 20, 2021
Priority date	Aug 26, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A glazing for minimising bird collisions with glazings has at least one substrate including a first major surface. The first major surface includes one or more first regions and one or more second regions, and the one or more first regions are coated with a UV reflective coating of a thickness of at least 5 nm. The one or more second regions are at least partially coated with the UV reflective coating at a thickness of less than 5 nm, or the UV reflective coating is completely absent in the one or more second regions. The UV reflective coating is coated with a protective coating, with the protective coating being based on an oxide or nitride of a metalloid or an oxide or nitride of a metal.

First claim

The invention claimed is:

1 . A glazing for minimising bird collisions with glazings, wherein the glazing comprises at least one substrate comprising a first major surface,
wherein the first major surface comprises one or more first regions and one or more second regions, wherein the one or more first regions are coated with a UV reflective coating and the UV reflective coating of the one or more first regions has a thickness of at least 5 nm, wherein the one or more second regions are at least partially coated with the UV reflective coating and the UV reflective coating of the one or more second regions has a thickness of less than 5 nm or wherein the UV reflective coating is completely absent in the one or more second regions, wherein the UV reflective coating is coated with a protective coating, wherein any regions of the first major surface where the UV reflective coating is absent are coated with the protective coating, wherein the protective coating is based on an oxide or nitride of a metalloid or an oxide or nitride of a metal, and wherein the protective coating has a thickness of at least 0.5 nm but at most 15 nm.

2 . The glazing according to claim 1 , wherein the protective coating is not overcoated.

3 . The glazing according to claim 1 , wherein the protective coating directly contacts the UV reflective coating.

4 . The glazing according to claim 1 , wherein the UV reflective coating directly contacts the first major surface of the substrate.

5 . The glazing according to claim 1 , wherein an antireflection layer is located between the UV reflective coating and the first major surface of the substrate.

6 . The glazing according to claim 1 , wherein the one or more second regions are at least partially coated with the UV reflective coating and the UV reflective coating has a thickness of less than 4.7 nm.

7 . The glazing according to claim 1 , wherein the protective coating is based on a material that is different to the material that the UV reflective coating is based on.

8 . The glazing according to claim 1 , wherein the protective coating is based on silicon dioxide, zirconium oxide, silicon nitride and/or nickel chromium oxide.

9 . The glazing according to claim 1 , wherein the protective coating is based on silicon dioxide and/or silicon nitride.

10 . The glazing according to claim 1 , wherein the protective coating has a thickness of at least 1 nm, but at most 10 nm.

11 . The glazing according to claim 1 , wherein the UV reflective coating is based on an oxide and/or nitride of one or more of titanium, vanadium, chromium, zirconium, niobium, tantalum, hafnium and tungsten.

12 . The glazing according to claim 1 , wherein the UV reflective coating defines a patterned arrangement on the first major surface.

13 . The glazing according to claim 12 , wherein the patterned arrangement comprises a plurality of stripes.

14 . The glazing according to claim 13 , wherein at least one of the stripes has a thickness that changes by 10 nm or less over every 1 mm in width.

15 . The glazing according to claim 1 , wherein the UV reflective coating of the one or more first regions has a thickness of at least 10 nm, but at most 100 nm.

16 . The glazing according to claim 1 , wherein the at least one substrate is a glass substrate or a polymeric substrate.

17 . The glazing according to claim 1 , wherein the UV reflective coating and/or the protective coating have been deposited via sputtering.

18 . The glazing according to claim 1 , wherein the glazing comprises at least one glass substrate comprising a first major surface,
wherein the first major surface comprises one or more first regions and one or more second regions, wherein the one or more first regions are coated with a UV reflective coating and the UV reflective coating has a thickness of at least 10 nm but at most 50 nm, wherein the one or more second regions are at least partially coated with the UV reflective coating and the UV reflective coating has a thickness of less than 4.7 nm, or wherein the UV reflective coating is completely absent in the one or more second regions, wherein the UV reflective coating is coated with a protective coating, wherein the protective coating directly contacts the UV reflective coating, wherein, if present, any regions of the first major surface where the UV reflective coating is absent are coated with the protective coating and the protective coating directly contacts the regions of the first major surface where the UV reflective coating is absent, wherein the protective coating is based on an oxide of silicon, and wherein the UV reflective coating is based on titanium dioxide.

19 . A glazing for minimising bird collisions with glazings, wherein the glazing comprises at least one substrate comprising a first major surface,
wherein the first major surface comprises one or more first regions and one or more second regions, wherein the one or more first regions are coated with a UV reflective coating and the UV reflective coating of the one or more first regions has a thickness of at least 5 nm, wherein the one or more second regions are at least partially coated with the UV reflective coating and the UV reflective coating of the one or more second regions has a thickness of less than 5 nm or wherein the UV reflective coating is completely absent in the one or more second regions, wherein the UV reflective coating is coated with a protective coating, wherein the protective coating directly contacts any regions of the first major surface where the UV reflective coating is absent, wherein the protective coating is based on an oxide or nitride of a metalloid or an oxide or nitride of a metal, and wherein the protective coating has a thickness of at least 0.5 nm but at most 15 nm.

20 . A glazing for minimising bird collisions with glazings, wherein the glazing comprises at least one substrate comprising a first major surface,
wherein the first major surface comprises one or more first regions and one or more second regions, wherein the one or more first regions are coated with a UV reflective coating and the UV reflective coating of the one or more first regions has a thickness of at least 5 nm, wherein the one or more second regions are at least partially coated with the UV reflective coating and the UV reflective coating of the one or more second regions has a thickness of less than 5 nm or wherein the UV reflective coating is completely absent in the one or more second regions, wherein the UV reflective coating is coated with a protective coating, wherein the protective layer is placed to overlap both at least one first region and at least one second region, wherein the protective coating is based on an oxide or nitride of a metalloid or an oxide or nitride of a metal, and wherein the protective coating has a thickness of at least 0.5 nm but at most 15 nm.

Assignees

• Pilkington Group Ltd

Inventors

• Ridealgh John Andrew

Classifications

• Y10T428/24545

  Containing metal or metal compound · CPC title

• Y10T428/24537

  Parallel ribs and/or grooves · CPC title

• G02B5/286

  having four or fewer layers, e.g. for achieving a colour effect · CPC title

• G02B5/285

  comprising deposited thin solid films (G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361) · CPC title

• G02B5/283

  designed for the ultraviolet · CPC title