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US 2026/0285013 A1Published application
Anti-collision glazing
AssigneeSaint-Gobain Glass France
InventorsThéo CHEVALLIER, Anne PENILLARD
Life of this patent
Estimating the term…
Abstract
A multiple glazing suitable to be mounted in a building, on a facade and/or on a roof. An anti-collision glazing makes it possible to prevent, or at least reduce, the risk of birds colliding with the glazing.
Claims12
A multi-glazing adapted to be mounted in a building, on a facade and/or on the roof, comprising at least an exterior laminated glazing and an interior glazing separated by a gas gap and respectively intended to be arranged towards an outside and an inside of the building, said laminated glazing integrating a transparent layered element comprising two smooth outer main surfaces, as well as:
- two outer layers, comprising a lower outer layer and an upper outer layer, at least one of which is a laminating interlayer, and which each form one of two main outer surfaces of the layered element and which are made of dielectric materials having substantially the same refractive index;
- and
- a central layer interposed between the outer layers, said central layer being formed either by a single layer, which is a dielectric layer with a refractive index different from that of the outer layers, or a metallic layer, or by a stack of layers, which comprises at least one dielectric layer with a refractive index different to that of the outer layers or a metallic layer, wherein a first portion of each contact surface between two adjacent layers of the layered element, one of which is dielectric and the other one of which is metallic, or which are two dielectric layers with a different refractive index, is textured and parallel to the other textured contact surfaces between two adjacent layers, and wherein a second portion of each contact surface between two adjacent layers of the layered element is smooth, wherein said first portion forms a textured pattern, which contrasts with a background formed by the second portion, said pattern being such that:
- each subset of said pattern is separated from an adjacent subset by a distance of less than 10.16 cm,
- said pattern has, relative to the background, a visibility “SCORE” greater than or equal to 0, and which satisfies the equation:
- SCORE
- =
- 0.85
- *
- Δ
-
- S
- +
- 0.15
- *
- Δ
-
- L
- Where AS is the chromatic contrast and satisfies the equation:
- SCORE
- =
- 0.85
- *
- Δ
-
- S
- +
- 0.15
- *
- Δ
-
- L
- Where “wi” is the Weber fraction representing the sensitivity of a cone “i” of the retina of a bird,
- Where “Δfi” is the real perception difference between said pattern and the background,
- Where “fi” satisfies the equation:
- fi
- =
- In
-
- (
- Qi
- /
- Qi_ref
- )
- where Qi is the sensory response of a cone “i” of the retina of a bird and satisfies the equation:
- Q
- i
- =
- ∫
- λ
- R
- i
- (
- λ
- )
-
- S
-
- (
- λ
- )
-
- I
-
- (
- λ
- )
-
- d
-
- λ
- Where “λ” is the wavelength, “S” is the considered spectrum, “I” is the illuminant D65 according to standard EN410 which describes the average solar spectrum and “Ri” is the sensitivity spectrum of said cone “i”,
- Where “Qi_ref” corresponds to “Qi” with S equal to 1,
- Where “ΔL” is the achromatic contrast and satisfies the equation:
- AL
- =
- Δ
-
- f_achromatic
- /
- w_achromatic
- Where “w_achromatic” is equal to 0.1 is the Weber fraction representing the achromatic sensitivity of the retina of a bird,
- Where “Δf_achromatic” is the difference in real achromatic perception between said pattern and the background,
- Where “f_achromatic” satisfies the equation:
- f_achromatic
- =
- In
-
- (
- Q
- /
- Q_ref
- )
- Where Q is the achromatic sensory response of the retina of a bird and satisfies the equation:
- Q
- =
- ∫
- λ
- R
-
- (
- λ
- )
-
- S
-
- (
- λ
- )
-
- I
-
- (
- λ
- )
-
- d
-
- λ
- Where “R” is the achromatic sensitivity spectrum,
- Where “Q_ref” corresponds to “Q” with S equal to 1.
118 more elements
Dependencies are inferred from the claim text.