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WO2025219041A1 - Agencement de vitre composite ayant une source de lumière et un conduit de lumière - Google Patents

Agencement de vitre composite ayant une source de lumière et un conduit de lumière

Info

Publication number
WO2025219041A1
WO2025219041A1 PCT/EP2025/058381 EP2025058381W WO2025219041A1 WO 2025219041 A1 WO2025219041 A1 WO 2025219041A1 EP 2025058381 W EP2025058381 W EP 2025058381W WO 2025219041 A1 WO2025219041 A1 WO 2025219041A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light guide
composite pane
pane
intermediate layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2025/058381
Other languages
German (de)
English (en)
Inventor
Siyamak MEMAR JAVID
Walter Schreiber
Yahya MOTEMANI SHARABIANI
Hadi RASTEGAR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Sekurit France
Original Assignee
Saint Gobain Sekurit France
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Sekurit France filed Critical Saint Gobain Sekurit France
Publication of WO2025219041A1 publication Critical patent/WO2025219041A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
    • B32B17/10256—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques
    • B32B17/10266—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques on glass pane
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10293—Edge features, e.g. inserts or holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10339—Specific parts of the laminated safety glass or glazing being colored or tinted
    • B32B17/10348—Specific parts of the laminated safety glass or glazing being colored or tinted comprising an obscuration band
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    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
    • B32B17/10467—Variable transmission
    • B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
    • B32B17/10504—Liquid crystal layer
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    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10541—Functional features of the laminated safety glass or glazing comprising a light source or a light guide
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    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10697—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer being cross-linked
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/1077—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyurethane
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    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
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    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/20—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for lighting specific fittings of passenger or driving compartments; mounted on specific fittings of passenger or driving compartments
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60Q3/60—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
    • B60Q3/62—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
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    • B60Q3/64—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
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    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
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    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
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    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
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Definitions

  • Laminated glass consists of at least one outer pane, one inner pane, and an adhesive interlayer that connects the outer pane to the inner pane.
  • Typical interlayers are polyvinyl butyral films, which, in addition to their adhesive properties, offer high toughness and high acoustic damping.
  • the interlayer prevents the laminated glass pane from shattering in the event of damage.
  • the laminated glass pane only cracks but remains dimensionally stable.
  • Modern vehicles often include a composite pane serving as a roof window, consisting of two glass panes bonded by a thermoplastic interlayer.
  • the individual panes of a composite pane are bent congruently to achieve a uniform curvature.
  • One or more thermoplastic composite films are inserted between the congruently bent panes. These films melt during lamination, creating a thermoplastic interlayer of a constant thickness.
  • Lighting can provide an attractive viewing experience in vehicles. To create accent or functional lighting in a vehicle, the lighting must be integrated into vehicle components.
  • the current state of the art involves a multitude of individual light sources consisting of multiple low-power light sources. Installing light sources inevitably requires a lot of space, as their dimensions require them to be installed as an additional component in the vehicle.
  • WO 2010/049638 A1 discloses the coupling of light into a glass pane via a side surface.
  • the point-like coupling of light makes homogeneous illumination of the entire pane difficult.
  • laminated glazing units with light sources wherein the light emitted by the light source is guided through the laminated glazing unit via a glass substrate or a polymeric intermediate layer.
  • Such a laminated glazing unit has a light introduction surface for introducing the light emitted by the light source, as well as a A light extraction surface is used to extract the light.
  • WO 2019/170330 A1 discloses a composite pane with electrically controllable optical properties, which comprises an outer pane, a first intermediate layer, a second intermediate layer and an inner pane, wherein a light guide is arranged at least partially between the outer pane and the inner pane.
  • WO 2005/054915 A1 discloses a light-guiding arrangement for vehicle roofs, comprising two glass panes with an intermediate layer.
  • the light-guiding arrangement comprises light-coupling means that couple light into the intermediate layer, as well as a recess for accommodating the light-coupling means.
  • WO 2017/120283 A1 describes an illuminated vehicle window consisting of a first layer of glass, a second layer of glass, a connecting layer between the first and second layers of glass, a channel and a light-scattering optical fiber in the channel of the connecting layer, wherein the fiber is connected to a light source.
  • the composite pane arrangement with a light source according to the invention comprises at least:
  • a light guide partially arranged between the outer pane and the inner pane, wherein the light source is arranged at a first end of the light guide located outside the composite pane, and a second end of the light guide located inside the composite pane is provided for coupling the light emitted by the light source into the composite pane, wherein the light guide has a length of at least 0.1 m outside the composite pane.
  • the light guide can have a maximum length of 2 m outside the composite pane.
  • the light source is not arranged directly on the composite pane, it can be positioned flexibly and adapted to the installation situation of the composite pane arrangement.
  • the light source in particular a high-performance LED, not only generates light but also unwanted heat.
  • the composite pane is not heated up additionally.
  • a further advantage of such an arrangement is that a defective light source can be easily replaced without damaging the composite pane. Since the light source does not have to be integrated into the composite pane, large light sources, i.e. light sources with large external dimensions, can be used.
  • such a composite pane arrangement enables efficient light coupling, since the light is guided through the light guide directly into the composite pane and can be emitted at a predetermined location.
  • outer pane and inner pane serve merely to distinguish between a first pane and a second pane.
  • the outer pane preferably, but not necessarily, faces the exterior of the composite pane, and the inner pane faces the interior.
  • the outer pane and inner pane are connected to one another via at least two intermediate layers.
  • the composite pane according to the invention can be designed, for example, as a roof pane of a vehicle.
  • the optical fiber comprises, in particular, a core and a cladding surrounding the core, the core having a higher refractive index than the cladding.
  • the optical fiber preferably has fibers made of glass and/or plastic as the core.
  • the core By forming the core as a fiber, in particular of glass and/or plastic, the light guide can be designed flexibly.
  • the optical fiber is preferably in the form of a cable, with the longer of its dimensions being referred to as the length and the shorter of its dimensions being referred to as the width.
  • the light guide can comprise a liquid, particularly a gel, as a transport medium.
  • a liquid or a gel as a transport medium offers a higher light output than with other light guides.
  • the light guide is preferably flexible and/or bendable. By using the flexible light guide to guide the light, the light can advantageously be transported to any position on the composite pane with little effort. This makes the design of the light guide within the composite pane flexible and particularly easy to implement.
  • the light guide can be at least partially light-scattering and/or transparent.
  • the light guide can be optically transparent.
  • the light guide has a lateral surface connecting the first end and the second end, with the light in the light guide exiting at least partially through the lateral surface of the light guide.
  • the light guide can have a tubular sheath that is at least partially transparent or, alternatively, can have no sheath. The light can be emitted over an extended section of the light guide or at a point.
  • the outer surface of the optical fiber preferably comprises at least one coupling element, wherein the coupling element is provided for coupling the light incident on the coupling element out of the optical fiber.
  • the coupling elements can be formed from a coating material, defects, scattering centers, recesses in the outer surface of the optical fiber, or as microcracks.
  • the coupling elements are provided to diffusely distribute the radiation to be coupled out.
  • the outer surface of the optical fiber can have multiple coupling elements in certain places.
  • the light guide is arranged between the first intermediate layer and the second intermediate layer.
  • the second end of the light guide located within the composite pane, is provided for coupling the light emitted by the light source into the first intermediate layer and/or second intermediate layer. This enables efficient light coupling into the composite pane. Because the intermediate layers are soft and flexible, the light guide is embedded and fixed between the inner and outer panes.
  • the composite pane has at least one light-guiding layer, wherein the second end of the light guide is coupled and/or connected to the light-guiding layer in a light-guiding manner.
  • the light-guiding layer is provided to guide the light emitted by the light guide.
  • the light-guiding layer is arranged between the first and the second intermediate layer.
  • the light-guiding layer can be designed as a light-guiding film, wherein the light-guiding layer has a thickness of 1000 pm or less, for example 200 pm, 150 pm, 100 pm or 50 pm. By using the light-guiding layer, attractive accent lighting can be realized, for example in a vehicle.
  • the composite pane can comprise several light-guiding layers.
  • the light guide can have a diameter that corresponds to the thickness of the first intermediate layer or the second intermediate layer. This ensures a particularly good connection between the light guide and the composite pane and a particularly effective light coupling.
  • the first intermediate layer or the second intermediate layer has a recessed area in which a portion of the optical fiber is arranged.
  • the optical fiber is securely fixed within the composite pane.
  • the optical fiber can be arranged parallel to the first or second intermediate layer.
  • the light guide can have a light output surface at the second end, which is arranged parallel to a side surface of the first intermediate layer or the second intermediate layer.
  • the light source comprises at least one light-emitting diode (LED), an organic light-emitting diode (OLED), a transparent organic light-emitting diode (TOLED) and/or at least one laser diode.
  • LED light-emitting diode
  • OLED organic light-emitting diode
  • TOLED transparent organic light-emitting diode
  • laser diode has The advantage is that it is particularly powerful and efficient. This allows for accent lighting to be placed at multiple points on the laminated pane.
  • the light source can include a cooling device for cooling the light source. This allows high-performance LEDs to be used as the light source, as these require active cooling during operation.
  • the light source can emit colored or white light.
  • Preferred light colors are white, yellow, red (due to their strong signaling effect), green (due to the human eye's high sensitivity to the green color spectrum), and blue.
  • a composite pane arrangement can comprise one or more light guides and light sources. Preferably, all light guides are coupled together, or each light guide is individually coupled, to at least one light source.
  • the light guide(s) can be arranged in any technically feasible form within the composite pane, for example, in the edge region, in the center, straight, curved, or as lettering or a symbol.
  • the use of a flexible light guide enables virtually wrinkle-free layering within the composite pane, even with complexly curved pane geometries.
  • the composite pane arrangement according to the invention with electrically controllable optical properties provides attractive accent lighting through the use of a light guide in the composite pane. Furthermore, the integration of the light guide into the composite pane results in enormous space savings, as an additional lighting module directly on or in the composite pane is no longer required.
  • the outer panes and the inner pane preferably contain glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass, or clear plastics, particularly preferably rigid clear plastics, for example, polycarbonate or polymethyl methacrylate.
  • the panes can be clear and optically transparent or tinted or colored.
  • the thickness of the panes can vary widely and thus be adapted to the requirements of the individual case.
  • the thickness of each pane is preferably from 0.5 mm to 15 mm, particularly preferably from 1 mm to 5 mm.
  • at least the inner pane and preferably also the outer pane are made of clear glass.
  • transparent means that the total transmission of the laminated pane complies with the legal requirements in the European Union for For windshields and front side windows, it preferably has a visible light transmittance of more than 70%, and in particular more than 75%.
  • transparent can also mean 10% to 70% light transmittance.
  • opaque means a light transmittance of less than 15%, preferably less than 5%, and in particular 0%.
  • the composite pane can have any three-dimensional shape.
  • the composite pane is preferably flat or slightly or strongly curved in one or more directions of the room.
  • the composite pane can have a functional element with electrically controllable optical properties, which is arranged between the first intermediate layer and the second intermediate layer.
  • the functional element can simply be inserted between the first intermediate layer and the second intermediate layer during production of the composite pane.
  • the first intermediate layer and the second intermediate layer contain at least one thermoplastic polymer, for example ethylene-vinyl acetate, polyvinyl butyral, polyurethane and/or mixtures and/or copolymers thereof.
  • the thickness of the thermoplastic connecting films is preferably from 0.05 mm to 2 mm, for example 0.38 mm or 0.76 mm. The connection is made under the influence of heat, vacuum and/or pressure according to methods known per se.
  • the functional element is a PDLC (polymer dispersed liquid crystal) functional element.
  • the PDLC functional element has an active layer containing randomly aligned liquid crystals. This leads to strong scattering of the light passing through the active layer.
  • the PDLC functional element also has two surface electrodes. If an electrical voltage is applied to the surface electrodes, the liquid crystals align in one direction, and the transmission of light through the active layer is significantly increased. Without an applied electrical voltage, the PDLC functional element is characterized by a white, milky appearance, which serves as a visual barrier.
  • the functional element is an SPD (suspended particle device).
  • the active layer contains suspended particles, which are preferably embedded in a viscous matrix. The absorption of light by the active layer can be changed by applying a voltage to the surface electrodes, which leads to a change in the orientation of the suspended particles. Particles.
  • the functional element is located centrally in the composite pane. The functional element can be electrically controlled via contact elements.
  • a third intermediate layer can be provided to reflect infrared radiation.
  • the third intermediate layer is arranged between the first intermediate layer and the second intermediate layer.
  • the third intermediate layer can comprise polyvinyl butyral, ethylene-vinyl acetate, polyurethane, and/or mixtures and/or copolymers thereof, and a polymer film.
  • a layer of polyvinyl butyral (PVB) with a polyethylene terephthalate (PET) film is used.
  • the PET film is particularly advantageous with regard to the stability of the third intermediate layer.
  • the PVB films contain at least one thermoplastic polymer, for example, ethylene-vinyl acetate, polyvinyl butyral, polyurethane, and/or mixtures and/or copolymers thereof.
  • the thickness of the thermoplastic PVB film is preferably from 0.05 mm to 2 mm, for example, 0.38 mm or 0.76 mm.
  • a further aspect of the invention comprises a system with a composite pane arrangement according to the invention comprising a light control of the light source, for example as a windshield, rear window, side window and/or roof window, in buildings, in particular in the access area, window area, roof area or facade area, as a built-in part in furniture and appliances.
  • a light control of the light source for example as a windshield, rear window, side window and/or roof window, in buildings, in particular in the access area, window area, roof area or facade area, as a built-in part in furniture and appliances.
  • a further aspect of the invention comprises a vehicle, in particular a passenger car, with a composite pane arrangement according to the invention.
  • Figure 1 is a cross-sectional view through the inventive
  • Figure 2A is a cross-sectional view through a first embodiment of a
  • Figure 2B is a cross-sectional view through a second embodiment of the
  • Figure 2C is a cross-sectional view through a third embodiment of the
  • Figure 3 is a cross-sectional view through an alternative embodiment of the composite pane arrangement according to the invention.
  • Figure 4 is a plan view of an embodiment of the invention
  • Figure 5 is a plan view of a further embodiment of the inventive
  • Figure 6 is a plan view of a further embodiment of the inventive
  • Figure 1 shows a cross-sectional view of a composite pane assembly 101 according to the invention, which comprises a composite pane 10 with a light guide 4 and a light source 5.
  • the composite pane 10 is designed as a roof pane of a passenger car.
  • the composite pane 10 contains an outer pane 1 with an inner surface II, an inner pane 2 with an outer surface III, a first intermediate layer 3a and a second intermediate layer 3b, which connects the inner surface II of the outer pane 1 to the outer surface III of the inner pane 2 across the pane surface. Furthermore, a light-guiding layer 3c is arranged between the first intermediate layer 3a and the second intermediate layer 3b. The light 6 emitted by the light guide 4 propagates in the light-guiding layer 3c, wherein the refractive index of the light-reflecting layer is greater than the refractive index of the first intermediate layer 3a or the second intermediate layer 3b.
  • the light-guiding layer 3c is intended to provide light 6 for illuminating an interior, for example a vehicle interior.
  • the outer pane 1 and the inner pane 2 are made, for example, of soda-lime glass and each have a thickness of 1.5 mm, for example.
  • the first intermediate layer 3a, the second intermediate layer 3b, and the light-guiding layer 3c are thermoplastic and are formed, for example, as a multilayer film made of thermoplastic (TPU), optically clear pressure-sensitive adhesive (PSA), polyvinyl butyral (PVB), or ethylene-vinyl acetate (EVA) with a total thickness of 0.86 mm, or they comprise one or more of these materials.
  • the light-guiding layer 3c can be formed as a light-guiding film and have a thickness of 1000 pm or less, for example 200 pm, 150 pm, 100 pm, or 50 pm.
  • outer pane 1 and inner pane 2 can be adapted to the specific application.
  • the outer pane 1 can comprise tempered, partially tempered, or non-tempered glass.
  • the inner pane 2 can be made of a plastic, for example, polycarbonate.
  • the inner pane 1, the outer pane 2, the first intermediate layer 3a, the second intermediate layer 3b, and the light-conducting layer 3c are, for example, clear (neither tinted nor colored).
  • the second intermediate layer 3b can comprise a tinted, in particular a dark tint (gray, brown, blue) or colored PVB film.
  • the outer pane 1 can be dark tinted (gray, brown, blue).
  • the light guide 4 is arranged in sections between the outer surface III of the inner pane 3 and the light-guiding layer 3c.
  • the first intermediate layer 3a has a recess region in which a section of length B of the light guide 4 is arranged.
  • the second intermediate layer 3b can form the recess region for the light guide 4.
  • the light guide 4 has a diameter corresponding to the thickness of the first intermediate layer 3a or the second intermediate layer 3b.
  • the light guide 4 has a light output surface at the second end 4b, which is arranged parallel to a side surface of the first intermediate layer 3a or the second intermediate layer 3b.
  • the light guide 4 has a first end 4a located outside the composite pane 10 and a second end 4b located inside the composite pane.
  • the light source 5 is located at the first end 4a of the light guide 4.
  • the second end 4b, located inside the composite pane 10, is provided for coupling the light 6 emitted by the light source 5 into the composite pane 10.
  • the second end 4b of the light guide 4 is connected or coupled in a light-conducting manner to the light-conducting layer 3c.
  • the light guide 4 is designed in the form of a cable.
  • the light guide 4 has a length A of 0.1 m to 2.5 m outside the composite pane 10, for example 0.5 m, 1 m, 1.5 m or 2 m.
  • the light source 5 can have a distance of 0.1 m to 2 m from the composite pane 10.
  • the light guide 4 extends over a length B of 0.01 m to 2.5 m, for example 0.1 m, 0.5 m, 1 m or 2 m.
  • the second end 4b of the light guide 4 is connected and/or coupled in a light-conducting manner to the light-conducting layer 3c.
  • the light source 5 consists, for example, of one or more light modules, light-emitting diodes (LEDs), OLEDs, TOLEDs, and/or laser diodes, which can couple light into the light guide 4, for example, via a reflector.
  • LEDs light-emitting diodes
  • OLEDs organic light-emitting diodes
  • TOLEDs laser diodes
  • the light source 5 can have a cooling device for actively cooling the light source 5.
  • Figure 2A, Figure 2B and Figure 2C each show a cross-section through an embodiment of the light guide 4.
  • the light guide 4 comprises a core 4e and a lateral surface 4c surrounding the core 4e, wherein the core 4e has a higher refractive index than the lateral surface 4c.
  • the light guide 4 preferably has fibers made of glass and/or plastic as the core 4e. Because the light guide 4 has fibers, in particular made of glass and/or plastic, the light guidance can be designed flexibly.
  • the light guide 4 can have a liquid as the core 4e, in particular a gel as the transport medium. The use of a liquid or a gel as the transport medium offers a higher light yield than with other light guides.
  • the light guide 4 can be at least partially light-scattering and/or transparent, in particular optically transparent.
  • the light guide 4 is flexible, i.e., bendable. By using the flexible light guide 4 to guide the light 6, the light 6 can advantageously be transported to any position on the composite pane 10 with little effort.
  • the light guide 4 has a diameter d of, for example, 90 pm, 200 pm, or 380 pm and is suitable for emitting light 6 via the lateral surface 4c along its extended length and/or at the second end 4b.
  • the light guide 4 can also consist of a single fiber with a thick diameter. The diameter of the individual fiber can then be in the millimeter range.
  • the light 6 is coupled into the light guide 4 at the first end 4a via an end face or lateral surface 4c of the light guide 4.
  • the light source 5 is arranged at the first end 4a of the light guide 4.
  • the light source 5 consists, for example, of one or more light-emitting diodes (LEDs), an OLED, a light-emitting diode (TOLED), and/or a laser diode, which can couple light into the light guide 4, for example, via a reflector.
  • LEDs light-emitting diodes
  • OLED organic light-emitting diode
  • TOLED light-emitting diode
  • laser diode a laser diode
  • the light guide 4 can scatter the light 6 at the second end 4b and/or at its lateral surface 4c along its extension length in the composite pane 10, so that the light guide 4 shines at the second end 4b and/or over its extension length.
  • the light guide 4 can scatter the light on its lateral surface 4c along its entire extension length in the composite pane 10, so that the light guide 4 shines over the length B.
  • the emission of light 6 can extend over an extended section of the light guide 4 or can occur in a point-like manner.
  • the light guide 4 has a round cross-section.
  • Figure 2B shows a light guide 4 with a rectangular cross-section, and in Figure 2C, the light guide 4 is planar.
  • Figure 3 shows a cross-sectional view through an alternative embodiment of the composite pane arrangement 101 according to the invention, which comprises a composite pane 10 with the light guide 4 and the light source 5, as illustrated in Figure 1.
  • the composite pane 10 is designed as a roof pane of a passenger car.
  • the composite pane 10 contains the outer pane 1 with the inner surface II, the inner pane 2 with the outer surface III, the first intermediate layer 3a and the second intermediate layer 3b, which connect the inner surface II of the outer pane 1 to the outer surface III of the inner pane 2 across the pane surface.
  • the outer pane 1 and the inner pane 2 are also made of soda-lime glass and each have a thickness of, for example, 1.5 mm or 1.1 mm.
  • the first intermediate layer 3a and the second intermediate layer 3b are thermoplastic and are designed, for example, as a multi-layer film made of polyvinyl butyral (PVB) with a total thickness of 0.86 mm.
  • PVB polyvinyl butyral
  • the outer pane 1 can comprise tempered, partially tempered, or non-tempered glass.
  • the inner pane 2 can be made of a plastic, for example, polycarbonate.
  • the inner pane 1, the outer pane 2, the first intermediate layer 3a, and the second intermediate layer 3b are, for example, clear (neither tinted nor colored).
  • the second intermediate layer 3b can comprise a tinted, in particular a dark tint (gray, brown, blue) or colored PVB film.
  • the outer pane 1 can be dark tinted (gray, brown, blue).
  • the light guide 4 is arranged between the first intermediate layer 3a and the second intermediate layer 3b.
  • the light guide 4 can scatter the light 6 at the second end 4b and/or at its lateral surface 4c along its extension length in the composite pane 10, so that the light guide 4 illuminates at the second end 4b and/or across its extension length.
  • the lateral surface 4c of the light guide 4 has a plurality of output coupling elements 4d.
  • Each output coupling element 4d outputs the light 6 incident on the output coupling element 4d from the light guide 4.
  • the output coupling elements 4d can be formed from a coating material, defects, scattering centers, recesses in the cladding of the light guide, or as microcracks.
  • the output coupling elements 4d diffusely output and distribute the radiation to be output.
  • the lateral surface 4c of the light guide 4 can have a plurality of output coupling elements 4d in some places.
  • the light guide 4 can emit the light 6 at its lateral surface 4c along the entire length of its extension, so that the light guide 4 illuminates over the entire length of its extension.
  • the composite pane 10 can be provided with a functional element in the central area of the composite pane 10
  • the functional element can be a PDLC
  • the functional element can be a functional element that is embedded flush on all sides between the first intermediate layer 3a and the second intermediate layer 3b.
  • the functional element is a multilayer film consisting of an active layer between a first carrier film with an electrically conductive coating acting as a surface electrode and a second carrier film with an electrically conductive coating acting as a surface electrode.
  • the outer pane 1 is bonded to the inner pane 2 by lamination via the intermediate layers 3a and 3b.
  • the outer pane 1 and the inner pane 2 are very rigid and unyielding at the temperatures and pressures typically encountered.
  • the first intermediate layer 3a and the second intermediate layer 3b are then plastic, allowing the light guide 4 to penetrate the surface of the first intermediate layer 3a and the second intermediate layer 3b and become embedded there.
  • the light-scattering light guide 4 has a diameter d of 90 pm, 200 pm, or 380 pm, respectively.
  • the light guide 4 is suitable for emitting light 6 via its lateral surface 4c along its extension length.
  • the light 6 is coupled into the light guide 4 via an end face of the light guide 4 at the first end 4a.
  • the light source 5 is arranged at the first end 4a of the light guide 4.
  • the light source 5 is, for example, a light module, one or more light-emitting diodes (LEDs), an OLED, a transparent light-emitting diode (TOLED), and/or a laser diode, as described in Figure 1.
  • Figures 4, 5 and 6 each show a plan view of an embodiment of the composite pane arrangement 101 according to the invention.
  • the composite pane 10 can have an opaque masking print on a peripheral edge region of the inner surface II of the outer pane 1, for example a black print made of a ceramic paint, which, when fired, forms a firm bond with the glass surface III of the inner pane 2.
  • the masking print serves to conceal the view of the adhesive joints with which the composite pane 10 is bonded to a vehicle body. At the same time, the adhesive joint protected from light exposure and in particular from UV light, which would cause accelerated ageing of the bonded area.
  • the light guide 4 is arranged in a frame-like manner in the edge region of the composite pane 10.
  • several light guides 4, each with a light source 5 are arranged parallel to one another, and in Figure 6, several light guides 4 are arranged in a wave-like manner.
  • the light guide 4 is arranged in an area that is concealed by the masking print on the inner surface II of the outer pane 2. This means that the light guide 4 can be seen from the vehicle interior. In particular, light emerging from the side walls of the light guide 4 also reaches the vehicle interior.
  • the composite pane 10 is configured, for example, such that the light source 5 illuminates the light guide 4. This can occur independently or simultaneously with the rest of the vehicle's lighting.
  • the light source 5 can emit single-color light 6 or various accents using colored light 6. Different colors allow for attractive lighting of the vehicle to be clearly visible.
  • the light guide 4 need not be arranged along a side edge of a pane, or not only along one side edge, but can be arranged arbitrarily.
  • one or more light guides 4 can be arranged in a wave-like pattern, e.g., in the form of a sine wave.
  • the light guide 4 can have regions in which light emerges via the lateral surface 4c of the light guide 4, so that unrelated symbols can be illuminated.
  • the aesthetics of the composite pane 10 are thereby made significantly more appealing.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

La présente invention concerne un agencement de vitre composite (101) ayant une source de lumière (5), comprenant : · une source de lumière (5) positionnée à l'extérieur de la vitre composite (10), · un conduit de lumière (4) positionné en partie entre la vitre externe (1) et la vitre interne (2), la source de lumière (5) étant positionnée au niveau d'une première extrémité (4a) du conduit de lumière (4) située à l'extérieur de la vitre composite (10), et une seconde extrémité (4b) du conduit de lumière (4) étant prévue pour le couplage de la lumière (6) émise par la source de lumière (5) dans la vitre composite, la seconde extrémité (4b) étant située à l'intérieur de la vitre composite (10), le conduit de lumière (4) à l'extérieur de la vitre composite (10) ayant une longueur d'au moins 0,1 m et une surface externe (4c) reliant la première extrémité (4a) et la seconde extrémité (4b), et la lumière dans le conduit de lumière (4) sortant au moins partiellement à travers la surface externe (4c) du conduit de lumière (4).
PCT/EP2025/058381 2024-04-17 2025-03-27 Agencement de vitre composite ayant une source de lumière et un conduit de lumière Pending WO2025219041A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24170742.1 2024-04-17
EP24170742 2024-04-17

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WO2025219041A1 true WO2025219041A1 (fr) 2025-10-23

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054915A1 (fr) 2003-12-02 2005-06-16 Koninklijke Philips Electronics N.V. Ensemble guidant la lumiere pour toits de vehicules automobiles
WO2010049638A1 (fr) 2008-10-27 2010-05-06 Saint-Gobain Glass France Module a diodes electroluminescentes pour vehicule, fabrications
WO2013053629A1 (fr) 2011-10-10 2013-04-18 Saint-Gobain Glass France Vitre dotée d'une surface de commande éclairée
WO2015095288A2 (fr) 2013-12-19 2015-06-25 Corning Incorporated Surfaces texturées pour applications d'affichage
WO2017120283A1 (fr) 2016-01-05 2017-07-13 Corning Incorporated Fibre optique diffusant une lumière stratifiée
WO2019170330A1 (fr) 2018-03-06 2019-09-12 Saint-Gobain Glass France Disque composite pourvu d'un élément de fonction et éclairage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054915A1 (fr) 2003-12-02 2005-06-16 Koninklijke Philips Electronics N.V. Ensemble guidant la lumiere pour toits de vehicules automobiles
WO2010049638A1 (fr) 2008-10-27 2010-05-06 Saint-Gobain Glass France Module a diodes electroluminescentes pour vehicule, fabrications
WO2013053629A1 (fr) 2011-10-10 2013-04-18 Saint-Gobain Glass France Vitre dotée d'une surface de commande éclairée
WO2015095288A2 (fr) 2013-12-19 2015-06-25 Corning Incorporated Surfaces texturées pour applications d'affichage
WO2017120283A1 (fr) 2016-01-05 2017-07-13 Corning Incorporated Fibre optique diffusant une lumière stratifiée
WO2019170330A1 (fr) 2018-03-06 2019-09-12 Saint-Gobain Glass France Disque composite pourvu d'un élément de fonction et éclairage

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