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EP4587265A1 - Vitrage pouvant être éclairé comprenant un moyen de couplage de lumière multicouche - Google Patents

Vitrage pouvant être éclairé comprenant un moyen de couplage de lumière multicouche

Info

Publication number
EP4587265A1
EP4587265A1 EP23768497.2A EP23768497A EP4587265A1 EP 4587265 A1 EP4587265 A1 EP 4587265A1 EP 23768497 A EP23768497 A EP 23768497A EP 4587265 A1 EP4587265 A1 EP 4587265A1
Authority
EP
European Patent Office
Prior art keywords
pane
intermediate layer
coupling means
light coupling
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
EP23768497.2A
Other languages
German (de)
English (en)
Inventor
Tobias NIELSEN
Marcel Klein
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 EP4587265A1 publication Critical patent/EP4587265A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B32B3/00—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
    • 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
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • 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
    • B32B17/10009—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
    • B32B17/10018—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 only one glass sheet
    • 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
    • B32B17/10009—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
    • 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
    • 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
    • B32B17/10165—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
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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
    • B32B17/1055—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
    • B32B17/10788—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
    • 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
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10899—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin
    • B32B17/10935—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin as a preformed layer, e.g. formed by extrusion
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—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
    • 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • 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
    • B32B3/00—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
    • B32B3/10—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 a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18—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 a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
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    • B32B3/00—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
    • B32B3/26—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B3/30—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • 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
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
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    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
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    • B32B2307/412—Transparent
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    • B32B2605/08—Cars
    • 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
    • B60Q3/208—Sun roofs; Windows

Definitions

  • Composite panes as glazing consisting of two or more glass or polymer panes are used in vehicles as windshields, rear windows, side windows and roof windows.
  • light from a light source is coupled into a flat light guide in the form of a pane of the glazing using total reflection.
  • WO 2010/049638 A1 discloses the coupling of light via a side surface into a glass pane. From WO 2013/110885 A1, WO 2018/178591 A1 or WO 2019/105855 A1 it is known to arrange the light source in a recess in a glass pane and thereby couple the light into the pane.
  • a light coupling means is arranged opposite the light source.
  • a microprism film, a structured plastic film or a plastic plate with a flat arrangement of microprisms, which can be arranged on a continuous intermediate layer of a composite pane, can be used as the light coupling means.
  • the object of the present invention is to provide an improved glazing arrangement in which light coupling means with a greater height can also be provided without the occurrence of stresses.
  • the glazing arrangement should continue to be easy to produce using standardized materials for the panes and the intermediate layer.
  • the light coupling means which is arranged in the intermediate layer, is formed from a multilayer film, the multilayer film comprising at least one carrier layer and a microprism film.
  • a light coupling means formed from a multilayer film in the intermediate layer of the glazing arrangement it is advantageously possible to use microprism films with a height greater than 150 pm. Stresses in the finished glazing arrangement are avoided.
  • the structure of the light coupling means consisting of at least one carrier layer and a microprism film is crucial not only for the stress-free arrangement of the light coupling means, but also for simple implementation in known glazing arrangements with standardized materials. This enables the glazing arrangement to be easily manufactured and at the same time offers a wide range of design and lighting design variations the light coupling means can be provided in any height, shape, length and width in the intermediate layer and thus in the glazing as a whole.
  • the light coupling means of the present invention can further advantageously contribute to reducing or better dissipating heat generated by the light source. This extends the life of the illuminated glazing assembly.
  • the glazing arrangement according to the invention makes it possible to provide light sources with reduced power than before, which contribute to energy savings, since the light coupling means designed according to the invention contributes to greater brightness in the desired light propagation direction.
  • a disk or an object is understood to be transparent if the disk or the object has a transmission in the visible spectral range of greater than 20%, preferably 50%, particularly preferably greater than 70%, in particular greater than 85%.
  • first pane and/or the second pane may have further suitable coatings, for example an anti-reflection coating, a non-stick coating, an anti-scratch coating, a photocatalytic coating, a sun protection coating and/or low-E coating.
  • suitable coatings for example an anti-reflection coating, a non-stick coating, an anti-scratch coating, a photocatalytic coating, a sun protection coating and/or low-E coating.
  • the carrier layer is preferably glued to the microprism film, laminated or firmly connected in some other way to form the light coupling means.
  • the microprism film itself is known in particular from traffic technology as a reflective film, from lighting technology or from display technology, for example as Brightness Enhancement Film (BEF).
  • BEF Brightness Enhancement Film
  • This can in particular be a film which comprises a base layer and a microprism layer arranged on the base layer.
  • the base layer of the microprism film is present in addition to the carrier layer of the light coupling agent.
  • both the carrier layer and the base layer and the microprism layer are included in the light coupling means.
  • microprism films that can be used in the context of the invention are commercially available, for example from the companies 3M, MNTech, Shinwa, Zeon Chemicals, SKC, or Dupont, and illustrative examples of microprism films are also available in the US Patents 4,588,258, 4,775,219, 4,895,428, 5,138,488, 5,387,458, 5,450,235, 5,605,761, 5,614,286 and 5,691,846 are disclosed.
  • a scratch-resistant coated microprism film is described, for example, in US 2007/0254146 A1.
  • the prism structures of such a microprism film are in particular transparent and made of a polyacrylate or polycarbonate, for example PMA or PMMA.
  • the recess in the intermediate layer is preferably formed by a cutout in at least one thermoplastic layer of the intermediate layer.
  • the light coupling means is therefore preferably arranged in a section of at least one thermoplastic layer of the intermediate layer.
  • the intermediate layer can have further thermoplastic layers (at least one) without a cutout.
  • said at least one thermoplastic layer with the cutout in which the light coupling means is arranged borders directly on the first pane.
  • an intermediate layer suitable for laminated glass panes is provided and one or more cutouts are introduced into this.
  • the intermediate layer is preferably formed by a thermoplastic film or several thermoplastic films.
  • the cutout is made into at least one thermoplastic film.
  • the cutouts can be introduced, for example, by cutting, especially on a plotter, or punching.
  • At least one light source is installed on the first or second pane, preferably on a side edge or on the main surface of the first pane facing away from the intermediate layer. arranged.
  • the light source or light sources are arranged adjacent or (based on the first pane) opposite to at least one region of the light coupling means, for example adjacent to an edge region of a strip-shaped light coupling means.
  • the method according to the invention it is possible to produce an illuminable glazing arrangement as described above as according to the invention in the context of industrial production, without stress areas arising in the finished glazing, even with higher or thicker microprism films (greater than 150 pm).
  • the method makes it possible to introduce freely selectable shapes of the light coupling means, for example as strips, circular arc sections, circles or elliptical sections, into the glazing arrangement. This also makes it possible to achieve better light distribution and a more targeted light yield through good propagation of at least a large proportion of the light to be coupled along the entire shape of the light coupling means and, based on this, to provide fewer light sources.
  • the height of the laminated multilayer film of the light coupling means corresponds approximately to the height of the at least one thermoplastic layer of the intermediate layer with the cutout and correspondingly after inserting the cut multilayer film designed recesses in the intermediate layer, the height difference is less than 10% of the height of said at least one thermoplastic layer of the intermediate layer, preferably less than 5%.
  • the proportion of rejects during production can be reduced and a stable and long-lasting connection of the elements of the glazing arrangement can be achieved using standard industrial manufacturing steps.
  • the present invention further relates to the use of a glazing arrangement according to the invention as a roof pane of a vehicle.
  • the first pane is preferably the pane facing the vehicle interior, while the second pane faces the external environment.
  • FIG. 1 shows a cross-sectional view of a glazing arrangement 10 according to the invention.
  • the glazing arrangement 10 comprises a first pane 1, a second pane 6 and a light source 2.
  • the composite pane can be, for example, automobile glazing, building glazing or components of a piece of furniture or electrical device.
  • the glazing arrangement 10 is a roof pane of a vehicle.
  • the glazing arrangement 10 can also be part of insulating glazing and serve, for example, as an external or internal pane in a window of a building.
  • the glazing arrangement 10 can be installed in an interior and can serve, for example, as glazing in a conference room.
  • the intermediate layer 5 Adjacent to the light source 2, the intermediate layer 5 has a cutout in which the light coupling means 3 designed as a multilayer film is arranged.
  • the multilayer film of the light coupling means 3 comprises at least one carrier layer 3.1 and a microprism film 3.2 and its height is matched to the height of the intermediate layer 5, so that the height difference of the two elements is a maximum of 80 pm, but is preferably less than 50 pm.
  • the carrier layer 3.1 is particularly preferably formed from a material with a similar or even higher refractive index to that of the first disk 1, However, it can equally comprise another material that is well compatible with the material of the intermediate layer.
  • the carrier layer is transparent to the light emitted by the light source 2. In this way, the portion of the emitted light that shines onto the light coupling means 3 can fall well through the carrier layer onto the microprism film 3.2.
  • the light coupling means is intended to deflect a large part of the light arriving from the light source into the first pane 1 in transmission, through scattering, refraction, diffraction or in particular through reflection.
  • Typical heights of the prisms are in the range of approx. 20 pm - 25 pm.
  • the base layer of a typical microprism film is preferably made of PET or PVB and its typical height is approximately 100 pm to 150 pm, but it can also be in the range of approximately 30 pm - 40 pm.
  • the intermediate layer 5 can be tinted black.
  • Figure 2 shows a further embodiment of a glazing arrangement 10 according to the invention as a composite pane.
  • the basic arrangement of the first disk 1, the second disk 6 and the intermediate layer 5 arranged between them and connecting both disks, already shown in FIG. 1, is also implemented here.
  • a light source 2 is arranged on a side surface 4 of the first disk 1, the light of which is coupled into the first disk 1.
  • a light coupling means 3 in the form of a multilayer film comprising at least one carrier layer 3.1 and a microprism film 3.2 connected to the carrier layer is used to couple in the light emitted by the light source 2.
  • this embodiment of the invention has several thermoplastic films, in the present case three films arranged one above the other, which together form the intermediate layer 5. Two adjacent foils have a cutout, the cutouts of the foils forming a recess in the entire intermediate layer 5, into which the light coupling means 3 is inserted. The third film facing away from the first pane 1, on the other hand, has no cutout.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

La présente invention concerne un agencement de vitrage (10) comprenant au moins : · une première vitre (1) présentant une première surface principale (IV) et une seconde surface principale (III), la première vitre (1) étant prévue pour transférer au moins partiellement une lumière couplée à l'intérieur ; · une source de lumière (2) destinée à produire une lumière qui peut être couplée dans la première vitre ; · une seconde vitre (6) présentant une première surface principale (II) et une seconde surface principale (I) ; · une couche intermédiaire (5) qui est agencée entre la première vitre (1) et la seconde vitre (6) ; et · un moyen de couplage de lumière (3) qui est agencé dans la couche intermédiaire (5), le moyen de couplage de lumière (3) étant formé à partir d'un film multicouche, le film multicouche comprenant au moins une couche de support (3.1) et un film de microprisme (3.2).
EP23768497.2A 2022-09-16 2023-09-06 Vitrage pouvant être éclairé comprenant un moyen de couplage de lumière multicouche Pending EP4587265A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22196019 2022-09-16
PCT/EP2023/074412 WO2024056481A1 (fr) 2022-09-16 2023-09-06 Vitrage pouvant être éclairé comprenant un moyen de couplage de lumière multicouche

Publications (1)

Publication Number Publication Date
EP4587265A1 true EP4587265A1 (fr) 2025-07-23

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Application Number Title Priority Date Filing Date
EP23768497.2A Pending EP4587265A1 (fr) 2022-09-16 2023-09-06 Vitrage pouvant être éclairé comprenant un moyen de couplage de lumière multicouche

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Country Link
EP (1) EP4587265A1 (fr)
CN (1) CN119968268A (fr)
WO (1) WO2024056481A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7842380B2 (en) 2006-04-26 2010-11-30 Eternal Chemical Co., Ltd. Brightness enhancement film
FR2937710B1 (fr) 2008-10-27 2013-05-17 Saint Gobain Module a diodes electroluminescentes pour vehicule, support a diodes, fabrications
WO2013053629A1 (fr) 2011-10-10 2013-04-18 Saint-Gobain Glass France Vitre dotée d'une surface de commande éclairée
FR2986186B1 (fr) 2012-01-26 2014-09-05 Saint Gobain Vitrage eclairant pour vehicule
DE102012109900B4 (de) 2012-10-17 2015-10-15 Bayerische Motoren Werke Aktiengesellschaft Fahrzeugverglasung
US9952375B2 (en) 2013-12-19 2018-04-24 Corning Incorporated Textured surfaces for display applications
FR3064531B1 (fr) 2017-03-31 2019-04-05 Saint-Gobain Glass France Vitrage eclairant.
EP3717238A1 (fr) 2017-11-30 2020-10-07 Saint-Gobain Glass France Disque composite muni d'un composant électrique intégré
US11982830B2 (en) * 2020-11-05 2024-05-14 Saint-Gobain Glass France Glazing

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CN119968268A (zh) 2025-05-09
WO2024056481A1 (fr) 2024-03-21

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