[go: up one dir, main page]

WO2022053403A1 - Panneau composite pour affichage tête haute holographique - Google Patents

Panneau composite pour affichage tête haute holographique Download PDF

Info

Publication number
WO2022053403A1
WO2022053403A1 PCT/EP2021/074375 EP2021074375W WO2022053403A1 WO 2022053403 A1 WO2022053403 A1 WO 2022053403A1 EP 2021074375 W EP2021074375 W EP 2021074375W WO 2022053403 A1 WO2022053403 A1 WO 2022053403A1
Authority
WO
WIPO (PCT)
Prior art keywords
pane
hologram element
hologram
intermediate layer
laminated
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.)
Ceased
Application number
PCT/EP2021/074375
Other languages
German (de)
English (en)
Inventor
Andreas GOMER
Raphaela KANNENGIESSER
Adrien CERIPA
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 Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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 Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Priority to EP21772788.2A priority Critical patent/EP4210943A1/fr
Priority to CN202180003678.3A priority patent/CN114585506A/zh
Publication of WO2022053403A1 publication Critical patent/WO2022053403A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • 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
    • 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
    • B32B17/10082—Properties of the bulk of a glass sheet
    • B32B17/10119—Properties of the bulk of a glass sheet having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate
    • 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
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • 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
    • B32B17/10339—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
    • 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
    • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
    • 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
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/66—Compositions containing chromates as photosensitive substances
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
    • G02B2027/0105—Holograms with particular structures
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
    • G02B2027/0109—Head-up displays characterised by optical features comprising holographic elements comprising details concerning the making of holograms

Definitions

  • the invention relates to a method for producing a composite pane, in particular for a holographic head-up display, a composite pane for such a display, and the use of such a composite pane.
  • Composite glazing is used in many places today, particularly in vehicle construction.
  • vehicle includes, among other things, road vehicles, aircraft, ships, agricultural machines or also work equipment.
  • Composite panes are also used in other areas. These include, for example, building glazing or information displays, e.g. in museums or as advertising displays.
  • Laminated windows are also often used as a head-up display (HUD) to display information.
  • An image is projected onto the laminated glass panes by means of a projection device in order to display information in the viewer's field of vision.
  • the projection device is arranged, for example, on the dashboard so that the projected image is reflected in the direction of the viewer on the closest glass surface of the laminated glass pane inclined towards the viewer (cf. e.g. European Patent EP 0420228 B1 or German Offenlegungsschrift DE 10 2012 211 729 A1).
  • Holograms that are laminated between the panes of a composite pane can be used for head-up displays.
  • the hologram may contain information recorded thereon.
  • the hologram can be activated by means of light emitted by a projector and the information recorded in the hologram can thus be reproduced for the viewer.
  • Head-up displays comprising holographic optical elements are disclosed, for example, in the publications WO 2012/156124 A1 and US 2019/0056596 A1.
  • holograms There are different types of holograms. These include, for example, reflection holograms or holograms that are based on the principle of guiding light waves in the hologram, so-called waveguides or waveguide holograms. waveguide Holograms are described for example in US10394032 B2, LIS2015205138A1 or US10061069B2.
  • a hologram can be created in a photosensitive layer that is laminated between two panes of a laminated pane.
  • the recorded hologram can be damaged, for example, by moisture penetrating the layer.
  • chemicals used for example, during installation in a vehicle or when cleaning the laminated pane, can damage the hologram. Since the laminated pane is fixed with an adhesive, depending on the installation situation, components of the adhesive can diffuse over the edge of the pane into the intermediate layer and impair a hologram located there.
  • DE 68912246T2 discloses a method for producing a laminated pane, in which a hologram is introduced between two panes by means of a carrier, with the carrier having to be removed before the final lamination. This is a comparatively complex process that is difficult to automate.
  • JP 409113840 A describes a pane with a hologram element that is cut back along the edges and embedded in a thermoplastic intermediate layer.
  • prefabricated photosensitive films are used, which have to be fixed in/on the pane.
  • US Pat. No. 5,341,230 A describes a pane with a three-part hologram, a prefabricated layer also being used as the hologram film.
  • the object of the present invention is therefore to provide an improved method for producing a laminated pane with a hologram and to develop an improved laminated pane which contains an optically flawless hologram with a high resistance to aging.
  • the object of the present invention is solved by a method according to independent claim 1 .
  • Preferred embodiments emerge from the dependent claims.
  • a laminated pane according to the invention and its use emerge from further independent claims.
  • the invention relates to a method for producing a laminated pane with a hologram.
  • step (a) a first pane and a second pane are provided. If necessary, the slices are washed and dried and thus prepared for further processing.
  • a masking stripe is arranged on a surface of the first disc, so that the masking stripe delimits a cutout for a hologram element.
  • the masking strip completely frames the area that is intended for the hologram element and thus specifies the dimensions of the hologram element.
  • a photosensitive layer is then applied as a hologram element at least in the section delimited by the masking strip.
  • the photosensitive layer can be applied over the entire surface of the first pane and can thus also be applied to the masking strip if this is easier in terms of process technology. Alternatively, the photosensitive layer can also be applied exclusively in the cutout for the hologram element.
  • the term surface refers to one of the surfaces of the first disk and not both surfaces of the first disk. This means the surface on the side of the first pane to be coated.
  • step (c) the masking stripe is removed from the surface of the first disc so that a peripheral edge of the photosensitive material hologram element is exposed.
  • a frame area, in which no photosensitive material is arranged, is thus formed circumferentially around the hologram element.
  • the hologram element therefore does not extend to the edge of the pane and is protected in the finished laminated pane from moisture, chemicals or cleaning agents with which the edge of the pane can come into contact.
  • At least one hologram is produced in the hologram element in step (d) by exposing the photosensitive layer.
  • Step (d) is preferably performed before the lamination in step (f) so that the lamination can be done without any precautions regarding the unexposed photosensitive material.
  • step (d) is preferably performed just before or just after removing the masking strip in step (c).
  • step (e) the first pane, a thermoplastic intermediate layer and the second pane are arranged to form a layer stack such that the hologram element is arranged between the first pane and the second pane.
  • the thermoplastic intermediate layer serves to connect the first pane and the second pane and thus extends flat over the entire surface of the first pane or the second pane.
  • the thermoplastic intermediate layer thus has a larger area as the hologram element. If no additional barrier film is arranged to surround the hologram element, the peripheral edge of the hologram element is sealed by the thermoplastic intermediate layer and is thus protected from external influences.
  • step (f) the first pane and the second pane are laminated via the thermoplastic intermediate layer to form a composite pane. This usually takes place in a lamination process under the influence of pressure and temperature.
  • the method thus offers a possibility for the simple production of a laminated pane with a hologram that is protected against the ingress of moisture, chemicals or cleaning substances.
  • the method creates a clean peripheral edge of the hologram element.
  • a reflection hologram or a waveguide hologram that is arranged within a hologram element is referred to as a hologram.
  • the hologram element refers to the holographic medium in which the hologram is contained.
  • the hologram element is obtained by applying a photosensitive material comprising a matrix and photosensitive substances.
  • a hologram can be recorded in this photosensitive material by exposure to a suitable light source.
  • the material of the hologram element is no longer sensitive to light, since the photosensitive material is changed to such an extent during the process that it is no longer possible to record a reflection hologram.
  • the term hologram element refers to both the unexposed photosensitive material hologram element and the final hologram recorded hologram element.
  • the hologram element comprises at least one hologram, but preferably several individual holograms.
  • the first pane and the second pane each have an outside surface, ie, an outer surface, and an inside surface, ie, an inner surface, and a peripheral side edge extending therebetween.
  • the outer surface designates that main surface which is intended to face the external environment in the installed position.
  • inner surface designates that main surface which is intended to face the interior in the installed position.
  • the outer surface of the first pane and the inner surface of the second pane face each other in the laminated pane according to the invention.
  • the inner pane within the meaning of the invention refers to the pane facing the interior (vehicle interior).
  • the outer pane refers to the pane facing the outside environment.
  • the first pane can be the outer pane or the inner pane and the second pane can be the outer pane or the inner pane.
  • the first pane is preferably the inner pane and the second pane is the outer pane. Since the hologram element is applied to the first pane, the perception of the hologram by a vehicle occupant is not disturbed by an intervening thermoplastic intermediate layer.
  • the masking strip is arranged as a continuous border of the cut-out, whereby the masking strip can consist of a continuous frame or a composite frame.
  • the masking strip is preferably applied to the inner surface of the first pane in liquid form, which can be detached again after a hardening process. This simplifies the continuous application even with curved geometries of the hologram element.
  • the masking strip is preferably composed of solid, foil-like pieces (tape) to form a continuous border around the cutout.
  • a self-adhesive adhesive tape is preferably used, which is removed again after the application of the photosensitive material.
  • Adhesive tape is preferably used here, which can be removed again without leaving any residue.
  • Adhesive tape refers to a plastic foil or paper layer that is coated with an adhesive compound on one side.
  • the masking strip limits the cut-out for the hologram element on the first disc. This means that the masking stripe frames the area for the hologram element. The section therefore designates the area on the first pane provided for the hologram element. After the photosensitive material has been applied, the hologram element completely fills the section.
  • the masking strip functions as a delimitation strip as it delimits the area for the hologram element. It also covers or masks the area in which it is arranged and prevents photosensitive material from being applied there as well. In this respect, it also assumes the function of a cover strip.
  • the contour of the cutout is preferably traversed along the masking strip on the side facing the hologram element with a cutting tool such as a knife or laser, so that a clean edge of the hologram element is produced.
  • the surface of the first pane is pretreated at least in the cutout for the hologram element in order to improve the adhesion of the photosensitive material.
  • This can be a particularly thorough cleaning, or pre-treatment with an adhesion promoter or primer, or activation using a plasma. The pre-treatment takes place before the application of the photosensitive material.
  • the photosensitive material is applied in a curtain coating process or a spraying process or a doctor blade process.
  • curtain coating process and the spraying process are particularly preferred, since these processes can easily be automated.
  • the first pane is passed under a curtain of constant flow of photosensitive material, the thickness of the film layer depending on the speed at which the pane is passed under the curtain and the flow rate of the photosensitive material. This process delivers particularly even layers.
  • a spraying process a solution of the photosensitive material is applied to the first disc sprayed or sprayed. This can be used very well industrially and can be easily adapted to different sizes of the hologram element.
  • the photosensitive material preferably comprises photopolymers, silver halides or dichromated gelatin.
  • Photopolymers are advantageous because they can be cured by exposure to light, which is particularly simple in terms of process technology. Suitable photopolymers are known to those skilled in the art, for example from EP1438634B1.
  • Silver halides or dichromates are usually used in a gelatin matrix, which is usually first dried before the hologram can be recorded by exposure.
  • the use of silver halides and dichromates as photosensitive material is known, for example, from DE3909289A1 and DE69020975T2.
  • step (d) the hologram is produced by exposure to a laser. This leads to particularly good holograms and can easily be automated.
  • a blocking film in the form of a peripheral frame is arranged directly adjacent to the peripheral edge of the hologram element.
  • the surrounding frame completely frames the hologram element without interruption.
  • the barrier foil preferably has a thickness which corresponds approximately to the thickness of the hologram element. In this way, air inclusions in the area of the peripheral edge of the hologram element can be avoided during lamination with the thermoplastic intermediate layer. In addition, a local thickness difference between the area with the hologram element and the surrounding area can be at least partially compensated by the blocking film in the subsequent laminated pane.
  • the blocking film does not overlap the hologram element, but rather is only attached in its immediate vicinity adjacent to the peripheral edge of the hologram element, as a result of which this compensation for differences in thickness becomes possible.
  • the barrier film has a cutout whose dimensions correspond to the dimensions of the cutout defined by the masking strip. Step (g) is performed after removing the masking stripe in step (c) to allow the barrier film to be placed there in the form of a frame in the same plane as the hologram element.
  • the hologram element and the blocking film are thus in the same plane of the layer stack and touch each other along their edges, with their contact surface being essentially orthogonal to the pane surfaces of the laminated pane.
  • the barrier film is preferably assembled from individual sections of a barrier film to form a peripheral frame. This single part solution can be adjusted comparatively flexibly to different dimensions of hologram elements.
  • the blocking film is preferably used as a continuous frame-shaped film that has no interruptions within the surrounding frame.
  • continuous means that the corresponding blocking film is uninterrupted all the way around the hologram element, ie has no interruptions.
  • the frame results from the cutout in the area of the hologram element.
  • a particularly good seal can be achieved by means of an uninterrupted, continuous shape.
  • quality problems can arise when using individual sections of blocking foil, each laid along the edges of the hologram element. For example, air inclusions can occur in the overlapping areas of the individual strip-shaped sections of the barrier films.
  • a flat, continuous, frame-shaped design of the blocking film along the peripheral edge of the hologram element is therefore advantageous in terms of product quality.
  • the barrier film is first connected to the thermoplastic intermediate layer to form a pre-composite and then the pre-composite is placed in the stack of layers in step (e) of the method.
  • step (g), arranging a barrier film is performed directly in the formation of the layer stack.
  • the barrier film retains its inherent stability.
  • the blocking film which is adapted in size to the hologram element, represents an unstable frame which, however, must be applied with a precise fit in order to prevent slipping in the layer stack.
  • the barrier film can be brought into any shape by using a pre-laminate. In this way, a rounded or round edge design of the hologram element is also made possible.
  • a continuous frame-shaped barrier film is particularly advantageous in connection with the use of pre-composites made of barrier film and a thermoplastic composite film.
  • the frame-like shape is advantageous with regard to the dimensional stability of the barrier films in the pre-lamination. This simplifies the insertion of the frame-shaped barrier film and thus avoids the occurrence of insertion errors, thereby increasing the product quality.
  • the barrier film can be made from a single film layer or as a two-layer, three-layer or multi-layer film stack made from individual film layers. This can be beneficial if the thickness of an individual film layer is too small compared to the thickness of the hologram element.
  • the peripheral frame consists of an inner frame and an outer frame.
  • the inner frame is arranged directly adjacent to the peripheral edge of the hologram element and the outer frame is arranged directly adjacent to the inner frame.
  • the terms inside and outside refer to the hologram element being centrally located in the plane and the barrier foil frames being adjacently located therearound.
  • the inner frame and the outer frame preferably have different compositions, so that the inner frame is, for example, a good diffusion barrier for substances from the outer frame and/or the thermoplastic intermediate layer.
  • the outer frame has particularly good adhesion properties to the first pane, which improve the stability of the pane and facilitate lamination.
  • both the inner frame and the outer frame are in the form of a polymeric film. These can be introduced into the layer stack simultaneously or sequentially in the process. This is particularly easy to carry out in terms of process technology.
  • step (f) the frame-shaped blocking film is first placed on the first pane with the hologram element, so that the hologram element comes to rest in the section of the blocking film. Subsequently, possible further layers are placed on the hologram element and barrier film and then the thermoplastic intermediate layer and above that the second pane. This layer stack is then connected via lamination.
  • the blocking film in the form of a pre-composite of blocking film and thermoplastic intermediate layer is placed on the hologram element on the first pane with the hologram element in such a way that the blocking film surrounds the peripheral edge of the hologram element. After that will Finally, the second pane is placed and the stack of layers is connected in a lamination process.
  • Adhesion-improving layers and, in particular, adhesion promoters can be present between the individual layers and foils of the layer stack.
  • the barrier film is preferably fixed to the first pane by means of an adhesion promoter in order to prevent it from slipping during the process.
  • the barrier film preferably has no adhesion promoters, adhesion-improving coatings and/or adhesives.
  • the use of a pre-composite means that the production process is less susceptible to errors, which enables a high degree of automation.
  • the pre-composite of the thermoplastic intermediate layer and the barrier film is produced in step (e) before the individual layers of the composite pane are put together.
  • the barrier film is preferably connected to the thermoplastic intermediate layer by heating to form a pre-composite.
  • the barrier film and the thermoplastic intermediate layer, which are to be formed into a precomposite are preferably heated and pressed against one another.
  • the steps of heating and pressing the films together can be carried out one after the other, for example by the barrier film and the thermoplastic intermediate layer running through a heating register together and then being pressed against one another by a pair of rollers.
  • a pair of heated rollers is used, which presses the barrier film and the thermoplastic intermediate layer together and connects them in one step to form a pre-composite.
  • the use of a pair of rollers to connect the foils is particularly advantageous since air pockets between the foil components are reliably removed.
  • the pre-composite produced from a barrier film and a thermoplastic intermediate layer can be wound up on a roll and thus be produced and stored in advance as required.
  • the pre-composite is preferably initially created from a thermoplastic intermediate layer arranged essentially congruently and a barrier film.
  • the barrier film of the pre-composite is then removed in at least one section.
  • the hologram element is placed in this section when the layer stack is assembled in step (e).
  • a cutout in the barrier film By making a cutout in the barrier film, a line is created along the cutout inner edge of the barrier foil.
  • the size of the section is dimensioned in such a way that the blocking film surrounds the hologram element in the form of a pas-partout.
  • the inner edge of the blocking film and the peripheral edge of the hologram element are in direct contact.
  • the blocking film represents a continuous, uninterrupted frame. This is advantageous with regard to reliable sealing of the hologram element.
  • the frame-shaped barrier film When using pre-bonds, the frame-shaped barrier film is particularly easy to position.
  • the blocking film is therefore only present in the edge area of the hologram element, where sealing of the open edges of the hologram element is necessary.
  • the hologram element and blocking film do not show any overlap.
  • Any prints that may be present, for example opaque cover prints (black print in the edge area of the pane) are preferably applied using the screen printing process.
  • the lamination is preferably carried out under the action of heat, vacuum and/or pressure.
  • Methods known per se can be used for lamination, for example autoclave methods, vacuum bag methods, vacuum ring methods, calendering methods, vacuum laminators or combinations thereof.
  • the invention also relates to a laminated pane with a hologram.
  • the statements already made in the description of the method according to the invention with regard to the laminated pane resulting from the method naturally also apply to the pane itself and vice versa.
  • the laminated pane according to the invention contains a hologram.
  • the laminated pane according to the invention can be produced using the method according to the invention and is preferably produced using a method according to the invention.
  • the laminated pane comprises at least one stacked sequence of a first pane, a thermoplastic intermediate layer and a second pane.
  • a hologram element is positioned between the first disc and the thermoplastic interlayer.
  • a hologram element with a peripheral edge is arranged directly on a surface of the first pane.
  • the hologram element is in direct contact with the surface of the pane and is not attached to the first pane via a carrier film or separate adhesive layer.
  • the thermoplastic intermediate layer projects beyond the hologram element on all sides.
  • thermoplastic intermediate layer serves to bond the first and second panes and is therefore identical in area to the first pane and the second pane.
  • the hologram element does not reach the edge of the pane, while the thermoplastic intermediate layer extends all the way to the edge of the pane.
  • the hologram element in the laminated pane is thus sealed at its peripheral edge by the thermoplastic intermediate layer or other layers arranged there and is thus protected from external influences such as moisture and cleaning agents.
  • a barrier film with a cutout is preferably arranged between the thermoplastic intermediate layer and the first pane.
  • the hologram element is arranged within this section and completely fills it out.
  • the blocking film has the shape of a peripheral frame and is in direct contact with the peripheral edge of the hologram element.
  • the hologram element and the blocking film are thus in the same plane of the layer stack and touch each other along their edges, with their contact surface being essentially orthogonal to the pane surfaces of the laminated pane.
  • the blocking film in the form of a peripheral frame compensates for a local difference in thickness between the area with the hologram element and the surrounding area.
  • the blocking film does not overlap the hologram element, but rather is only attached in its immediate vicinity adjacent to the peripheral edge of the hologram element, which makes it possible to compensate for differences in thickness. Accordingly, the laminated pane with a hologram element not only has improved resistance to aging, but also improved durability by minimizing stresses and glass breakage.
  • the hologram element contains photopolymers, silver halides or dichromated gelatin. These are particularly suitable materials for recording age-resistant holograms.
  • a cover film is arranged between the hologram element and the thermoplastic intermediate layer.
  • the cover film preferably serves as a diffusion barrier for plasticizers or other substances that could diffuse from the thermoplastic intermediate layer into the hologram element and impair the optical quality of the hologram there.
  • An adhesive layer is particularly preferably arranged between the cover film and the hologram element.
  • the adhesive layer improves the adhesion between the hologram element and the cover foil. This prevents delamination between these layers.
  • the cover film preferably contains polyethylene terephthalate (PET), polyethylene (PE), polymethyl methacrylate (PMMA), polycarbonate (PC), polyamide (PA), polyvinyl chloride (PVC) and/or cellulose triacetate (TAC) or consists essentially of one of these polymers.
  • PET polyethylene terephthalate
  • PE polyethylene
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • PA polyamide
  • PVC polyvinyl chloride
  • TAC cellulose triacetate
  • the cover film preferably has a thickness of 10 ⁇ m to 300 ⁇ m, particularly preferably a thickness of 40 ⁇ m to 200 ⁇ m, further particularly preferably 65 ⁇ m to 150 ⁇ m.
  • the adhesive layer is preferably a so-called optically clear adhesive (OCA) or a transparent adhesive.
  • OCA optically clear adhesive
  • Such adhesives are distinguished by high light transmission, low haze, no double refraction of light, high UV resistance and good aging resistance. Uncontrolled and therefore undesirable impairments in light transmission or unaesthetic distortions can be avoided in this way.
  • the adhesive layer preferably has an absorption in the visible spectral range of less than 5%, in particular less than 2% or even 1% and preferably a haze of less than 5%, in particular less than 2% or even 1%.
  • the layer of adhesive is preferably designed as a homogeneous layer.
  • the layer of adhesive preferably has a thickness of 20 ⁇ m to 200 ⁇ m, particularly preferably 50 ⁇ m to 150 ⁇ m, very particularly preferably 60 ⁇ m to 100 ⁇ m. This effectively prevents delamination between the cover film and the hologram element and achieves good optical properties.
  • adhesive layers with these thicknesses are commercially available as adhesive films.
  • the adhesive can also be used as a liquid adhesive.
  • the adhesive is preferably a chemically active, in particular chemically curing adhesive or UV-curing, particularly preferably an acrylate adhesive or a silicone-based adhesive.
  • the layer of adhesive is not an adhesive film with a thermoplastic effect, ie not a thermoplastic film which, after heating, causes the optical filter to bond to the surface of the pane, such as the thermoplastic films of the thermoplastic intermediate layer of the laminated glass pane.
  • the stacking sequence particularly preferably contains a cover layer and an adhesive layer when the hologram element contains a photopolymer as an essential component. Hologram elements made of photopolymers are significantly impaired by the diffusion of plasticizers, so that the cover layer prevents diffusion and the adhesive layer improves adhesion to the hologram element.
  • the thermoplastic intermediate layer contains or consists of at least polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU) or copolymers or derivatives thereof, preferably polyvinyl butyral (PVB), particularly preferably polyvinyl butyral (PVB) and additives known to those skilled in the art, such as plasticizers.
  • PVB polyvinyl butyral
  • EVA ethylene vinyl acetate
  • PU polyurethane
  • PVB polyurethane
  • PVB polyvinyl butyral
  • additives known to those skilled in the art such as plasticizers.
  • the thermoplastic intermediate layer preferably contains at least one plasticizer.
  • Plasticizers are chemical compounds that make plastics softer, more flexible, more supple and/or more elastic. They shift the thermoelastic range of plastics to lower temperatures so that the plastics have the desired more elastic properties in the operating temperature range.
  • Preferred plasticizers are carboxylic acid esters, especially low-volatility carboxylic acid esters, fats, oils, soft resins and camphor.
  • Other plasticizers are preferably aliphatic diesters of triethylene or tetraethylene glycol.
  • Plasticizers 3G7, 3G8 or 4G7 are particularly preferably used, the first digit designating the number of ethylene glycol units and the last digit designating the number of carbon atoms in the carboxylic acid part of the compound.
  • 3G8 stands for triethylene glycol bis-(2-ethylhexanoate), ie for a compound of the formula C 4 H 9 CH (CH 2 CH 3 ) CO (OCH 2 CH 2 ) 3O 2 CCH (CH 2 CH 3 ) C 4 H 9 .
  • the thermoplastic intermediate layer preferably contains at least 3% by weight, preferably at least 5% by weight, particularly preferably at least 20% by weight, even more preferably at least 30% by weight and in particular at least 40% by weight of a plasticizer.
  • the plasticizer preferably contains or consists of triethylene glycol bis(2-ethylhexanoate).
  • the thermoplastic intermediate layer more preferably contains at least 60% by weight, particularly preferably at least 70% by weight, in particular at least 90% by weight and for example at least 97% by weight, of polyvinyl butyral.
  • the thermoplastic intermediate layer can be formed by a single film or by more than one film.
  • the thermoplastic intermediate layer can also be a functional thermoplastic intermediate layer, in particular an intermediate layer with acoustically damping properties, an intermediate layer which reflects infrared radiation, an intermediate layer which absorbs infrared radiation, an intermediate layer which absorbs UV radiation, an intermediate layer which is colored at least in sections and/or an intermediate layer which is tinted at least in sections.
  • the thermoplastic intermediate layer can also be a belt filter film.
  • the thickness of the thermoplastic intermediate layer is between 30 ⁇ m and 1500 ⁇ m, preferably between 50 ⁇ m and 780 ⁇ m, preferably between 380 ⁇ m and 760 ⁇ m.
  • the barrier film contains at most 0.5% by weight of a plasticizer and prevents the diffusion of plasticizer through the barrier film. This is particularly advantageous since a diffusion of plasticizers and other components from the thermoplastic intermediate layer or other adjacent layers into the hologram element is prevented and the resistance to aging of the hologram element is thus significantly improved.
  • the barrier film is preferably used without a plasticizer.
  • the thermoplastic intermediate layer contains at least 5% by weight, preferably at least 20% by weight, of plasticizer.
  • the barrier film is preferably a polymer layer and preferably contains or consists of polyvinyl butyral (PVB), polyethylene terephthalate (PET), polyamide (PA), polyethylene (PE), polymethyl methacrylate (PMMA), polycarbonate (PC), polyvinyl chloride (PVC), cellulose triacetate (TAC). essentially from it. These materials are available without plasticizers or with a maximum plasticizer content of 0.5% by weight and thus form a good barrier for plasticizers from the thermoplastic intermediate layer.
  • PVB polyvinyl butyral
  • PET polyethylene terephthalate
  • PA polyamide
  • PE polyethylene
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • PVC polyvinyl chloride
  • TAC cellulose triacetate
  • the barrier film particularly preferably consists essentially of polyvinyl butyral (PVB) with a plasticizer content of at most 0.5% by weight.
  • PVB polyvinyl butyral
  • the barrier film preferably consists essentially of PET or PA, in which case an adhesion promoter is preferably arranged on the side facing the first pane.
  • PET and PA are preferably used without plasticizers and are therefore an excellent diffusion barrier for plasticizers.
  • the barrier film is designed in two parts and consists of an inner frame and an outer frame.
  • the inner frame is arranged directly adjacent to the peripheral edge of the hologram element.
  • the outer frame connects directly to the inner frame, so there is no interruption in the form of a gap between the inner frame and the outer frame.
  • the two-part design enables a reduction in unwanted interactions between the components of the hologram element and the outer frame.
  • a further barrier to the hologram element can thus be arranged through the inner frame.
  • the material composition of the inner frame and the outer frame preferably differs in terms of the main components in terms of mass.
  • the diffusion of chemical compounds from the outer frame to the hologram element is completely or almost completely prevented by choosing a material for the inner frame that differs from that of the outer frame not only in its plasticizer content but also in its main polymer component.
  • the thickness of the inner frame and the outer frame are preferably about the same.
  • the barrier film preferably has a lower proportion of plasticizer in the area of the inner frame than in the area of the outer frame.
  • the hologram element preferably has a thickness of 5 ⁇ m to 500 ⁇ m, preferably 10 ⁇ m to 200 ⁇ m and particularly preferably 15 ⁇ m to 150 ⁇ m.
  • the hologram element can consist of a single layer or of several layers applied one on top of the other.
  • the thickness of the blocking film and the thickness of the hologram element preferably deviate from one another by at most 30%, particularly preferably by at most 20%, in particular by at most 15%. This is advantageous with regard to covering the peripheral edge of the hologram element as far as possible along the edge height. With increasing edge coverage of the hologram element by the blocking film, its resistance to aging also increases due to the improved edge sealing. However, the inventors have found that a good result does not require a complete match of the thicknesses of the hologram element and the barrier film, and therefore complete edge coverage. With regard to the use of standardized film thicknesses, which is advantageous in the production process, it is therefore possible to consciously dispense with complete covering of the edge by the barrier film.
  • the thickness of the barrier foil and the thickness of the hologram element are essentially the same. In this way, a particularly good resistance to aging can be achieved. In this way, local differences in height are completely compensated for by the barrier film and there are no tensions caused by differences in height. In addition, air inclusions in the area of the peripheral edge of the hologam element are prevented.
  • the barrier film has a thickness of 40 ⁇ m to 750 ⁇ m, preferably 50 ⁇ m to 500 ⁇ m. In these areas, a wide variety of barrier films with different thicknesses are commercially available. The actual thickness of the barrier foil depends on the thickness of the hologram element.
  • a windshield has an upper edge and a lower edge and two side edges running between the upper edge and the lower edge.
  • the top edge designates that edge which is intended to point upwards in the installation position.
  • the lower edge designates that edge which is intended to point downwards in the installation position.
  • the upper edge is often referred to as the roof edge and the lower edge as the engine edge.
  • Windshields have a central field of vision, with high demands being placed on the optical quality.
  • the central field of view must have high light transmission (typically greater than 70%).
  • Said central field of view is in particular that field of view which is referred to as field of view B, field of view B or zone B by those skilled in the art.
  • Field of vision B and its technical requirements are specified in United Nations Economic Commission for Europe (UN/ECE) Regulation No. 43 (ECE-R43, "Uniform Conditions for the Approval of Safety Glazing Materials and Their Installation in Vehicles").
  • EAE-R43 Federal Communications Commission for Europe
  • the hologram element is advantageously located within the central field of view (field of view B) in a windshield.
  • the hologram element can, but does not have to, cover the entire area and can also protrude beyond it.
  • the position of the hologram / holograms in the hologram element is variable and is determined depending on the application.
  • the hologram(s) can be distributed over the entire surface of the hologram element or only arranged in a small sub-area.
  • the hologram element preferably extends over at least 30%, particularly preferably over at least 50%, further particularly preferably over at least 80% of the surface the first disc. In this way, visible transitions between the hologram element and a section without a hologram element in the visible area of the pane can be avoided.
  • the hologram element is particularly preferably arranged in such a way that the peripheral edge of the hologram element is arranged in the area of an opaque cover print.
  • This has the advantage that the opaque masking print covers the transition from the hologram element to the barrier film or the surrounding layer.
  • the masking print is usually in the edge area of the pane and hides the view of attachments or bonding.
  • Windshields typically have an all-round peripheral masking print made of an opaque enamel, which serves in particular to protect the adhesive used to install the windshield from UV radiation and to conceal it from view.
  • This peripheral masking print is preferably used to also mask the peripheral edge of the hologram element.
  • Both the outer pane and the inner pane preferably have a masking print, so that the view through the edge area is prevented from both sides.
  • the hologram element can also have recesses or holes, for example in the area of so-called sensor windows or camera windows. These areas are intended to be equipped with sensors or cameras whose function could be affected by a hologram element in the beam path.
  • the hologram element (or all of the hologram elements) is preferably arranged over the entire width and the entire height of the laminated pane, minus a peripheral edge area with a width of, for example, 5 mm to 50 mm.
  • the hologram element is thus encapsulated within the thermoplastic interlayer and protected from contact with the surrounding atmosphere and corrosion.
  • the width of the surrounding edge area can be constant or can vary along the frame.
  • the first and second panes are preferably made of glass, particularly preferably of soda-lime glass, as is customary for window panes.
  • the panes can also be made from other types of glass, for example quartz glass, borosilicate glass or alumino-silicate glass, or from rigid, clear plastics, for example polycarbonate or polymethyl methacrylate.
  • the panes can be clear, tinted or tinted.
  • Windshields must have sufficient light transmission in the central viewing area, preferably at least 70% in the main viewing area A in accordance with ECE-R43.
  • the first and the second pane are preferably curved, ie they have a curvature.
  • the first pane and/or the second pane can have other suitable coatings known per se, for example anti-reflection coatings, non-stick coatings, anti-scratch coatings, photocatalytic coatings or sun protection coatings or low-E coatings.
  • the thickness of the first and the second pane can vary widely and can thus be adapted to the requirements in the individual case.
  • the first and second panes preferably have thicknesses of 0.5 mm to 5 mm, particularly preferably 1 mm to 3 mm.
  • the laminated pane can be, for example, the windshield or the roof pane of a vehicle or other vehicle glazing, for example a partition pane in a vehicle, preferably in a rail vehicle or a bus.
  • the laminated pane can be architectural glazing, for example in an exterior facade of a building, or a separating pane inside a building.
  • the invention also includes a projection arrangement for displaying information for an observer, at least including a laminated pane according to the invention and a projector which is directed onto the hologram element from the inside.
  • a projection arrangement for displaying information for an observer at least including a laminated pane according to the invention and a projector which is directed onto the hologram element from the inside.
  • the composite pane according to the invention is designed as described above.
  • the projector emits light at wavelengths to which the hologram in the hologram element is responsive.
  • Laser projectors are preferred because very discrete wavelengths can be achieved with them.
  • the invention also includes the use of a laminated pane according to the invention with a hologram as interior glazing or exterior glazing in a vehicle or a building.
  • the invention also includes the use of a composite pane according to the invention as a windshield of a vehicle.
  • the invention is explained in more detail with reference to a drawing and exemplary embodiments.
  • the drawing is a schematic representation and not to scale. The drawing does not limit the invention in any way. Show it:
  • FIG. 1 shows a cross section of an embodiment of a laminated pane produced using the method according to the invention
  • FIG. 2 shows a cross section of an embodiment of a laminated pane produced using the method according to the invention
  • FIG. 3 shows a cross section of an embodiment of a laminated pane produced using the method according to the invention
  • FIG. 4 shows a cross section of an embodiment of a laminated pane with air inclusions
  • FIG. 5 shows a plan view of an embodiment of a composite pane according to the invention as a windshield
  • FIG. 6 shows a schematic representation of a method according to the invention
  • figure ? a cross section through an embodiment of a projection arrangement 101 according to the invention
  • FIG. 8 shows a schematic plan view of an intermediate stage of the method.
  • FIG. 1 shows an embodiment of a laminated pane 100 according to the invention.
  • the laminated pane 100 comprises a first pane 1, a second pane 2, a thermoplastic intermediate layer 3 and a hologram element 5.
  • FIG. 5 shows a plan view of a laminated pane 100.
  • FIG. 1 shows a possible cross section through a laminated pane according to FIG. 5 along section line B-B'.
  • the laminated pane 100 can be a windshield, for example.
  • the first pane 1 is the inner pane and the second pane 2 is the outer pane.
  • the outer pane consists of soda-lime glass, for example, and is 2.1 mm thick.
  • the inner pane 1 consists, for example, of soda-lime glass and is 1.6 mm thick.
  • a black print 18 is shown in the cross section, which is arranged on the inner side II of the outer pane 2 and thus conceals the view of the peripheral edge 8 of the hologram element 5 .
  • the first pane 1 and the second pane 2 are connected to one another via the thermoplastic intermediate layer 3 .
  • Between the thermoplastic intermediate layer 3 and the first Pane 1 has a hologram element 5 which is also connected to the second pane 2 via the thermoplastic intermediate layer 3 .
  • the hologram element 5 is arranged on the outer surface III of the first pane 1 .
  • the hologram element 5 is arranged directly on the outer surface III without a separate carrier film or a connecting film, so that the hologram element 5 can be perceived without interference by the viewer arranged on the side of the first pane.
  • the thermoplastic intermediate layer 3 protrudes beyond the hologram element 5 along the entire peripheral edge 8 of the hologram element.
  • thermoplastic intermediate layer 3 projects beyond the hologram element 5 on all sides, the hologram element 5 does not reach the edge of the pane. Since the thermoplastic intermediate layer 3 fills the area up to the edge of the pane, the hologram element 5 is sealed and protected against moisture or corrosive substances.
  • the thermoplastic intermediate layer 3 comprises a thermoplastic film with a thickness of 0.76 mm and contains, for example, 78% by weight of polyvinyl butyral (PVB) and 20% by weight of triethylene glycol bis(2-ethylhexanoate) as a plasticizer.
  • the hologram element 5 contains dichromated gelatin and has a thickness of 10 ⁇ m to 45 ⁇ m, for example 20 ⁇ m. Because of the small thickness, no air pockets occur during the lamination along the peripheral edge 8 of the hologram element. In the case of thicker hologram elements, problems with air inclusions 30 are observed more frequently, as is shown schematically in FIG.
  • FIG 2 shows a further embodiment of a composite pane 100 according to the invention.
  • the composite pane 100 in Figure 2 differs from the composite pane shown in Figure 1 by the hologram element 5 and an additional blocking film 6.
  • the hologram element 5 has a peripheral edge 8. Along the peripheral edge 8 A blocking film 6 is arranged on the hologram element, which encloses the peripheral edge 8 . Since the peripheral edge 8 of the hologram element 5 is completely enclosed by the barrier film 6, the hologram element 5 is effectively protected from moisture or cleaning agents or other substances that come into contact with the edge of the laminated pane.
  • the hologram element 5 contains silver bromide in a gelatin matrix and has a thickness of about 100 ⁇ m.
  • the hologram element Since the hologram element has a thickness of more than 50 ⁇ m, the probability of the formation of air pockets 30 (see FIG. 4) is relatively high.
  • a blocking film 6 in the form of a peripheral frame 12 is arranged on the first pane 1 in the same plane as the hologram element 5 .
  • the barrier film 6 consists, for example, of two frames 12 made of PVB with a plasticizer content of at most 0.5% by weight laid flat one on top of the other.
  • the barrier film 6 has a thickness of 100 ⁇ m and consists of two film frames placed one on top of the other, each with a thickness of 50 ⁇ m.
  • the barrier film 6 made of PVB has excellent adhesion to the first pane 1 and to the thermoplastic intermediate layer 3, which is also made of PVB. Therefore, the composite pane is extremely stable and resistant to aging.
  • the blocking film 6 has a section 17 that is completely filled by the hologram element 5, i.e. the blocking film is in direct contact with the hologram element 5 along the peripheral edge 8.
  • the blocking film 6 does not overlap with the surface of the hologram element 5, but is made possible by the direct contacting of the side edges a targeted selective edge sealing.
  • the surface of the hologram element 5 that runs essentially parallel to the panes 1, 2 is referred to as the surface of the hologram element, while the edges show a course that is essentially orthogonal to the panes 1, 2.
  • FIG. 3 shows a further embodiment of a composite pane 100.
  • the hologram element 5 contains a photopolymer in which the hologram is recorded.
  • the hologram element 5 is surrounded by a frame-shaped blocking film 6 which is arranged in the same plane as the hologram element.
  • the hologram element 5 and the blocking film 6 have approximately the same thickness, for example 75 ⁇ m.
  • a cover film 11 is arranged between the hologram element 5 and the thermoplastic intermediate layer 3 .
  • the cover film 11 serves as a diffusion barrier for plasticizers or other substances that could diffuse from the thermoplastic intermediate layer 3 into the hologram element 5 and impair the optical quality of a hologram there.
  • the cover film 11 consists here, for example, essentially of PET, ie at least 97% by weight and contains no plasticizers.
  • An adhesive layer 10 made of a transparent optical adhesive (OCA) is arranged between the cover film 11 and the hologram element 5 .
  • OCA transparent optical adhesive
  • the barrier film 6 is made in two parts in Figure 3, that is, it consists of an inner frame 12.1 and an outer frame 12.2.
  • the inner frame 12.1 is direct arranged adjacent to the peripheral edge 8 of the hologram element 5 .
  • the outer frame 12.2 connects directly to the inner frame 12.1 so that there is no gap between the frames.
  • the inner frame 12.1 is a polyamide film without plasticizers.
  • the inner frame prevents a diffusion of plasticizer from the overlying thermoplastic intermediate layer 3 via the frame material into the hologram element 5.
  • the outer frame 12.2 consists of PVB with a maximum of 0.5% by weight of plasticizer.
  • the outer frame 12.2 ensures optimum adhesion in the edge area, since the PVB adheres particularly well to the first pane 1.
  • the material composition of the inner frame and the outer frame thus differs in terms of the main components in terms of mass.
  • the diffusion of chemical compounds from the outer frame 12.2 to the hologram element 5 is completely or almost completely prevented by the inner frame 12.1.
  • the thickness of the inner frame and the outer frame are preferably about the same.
  • FIG. 4 shows a laminated pane 100 with a structure similar to that in FIG. 1.
  • the hologram element has a thickness of 100 ⁇ m. Without an additional frame, air inclusions 30 occur in the area of the peripheral edge 8 of the hologram element 5 during the lamination. This impairs the appearance of the compound pane and reduces the stability of the pane.
  • FIG. 5 shows a plan view of a composite pane 100.
  • the composite pane is designed as a windshield.
  • the windshield comprises a trapezoidal composite pane 100 with a first pane 1 as the inner pane and a second pane 2 as the outer pane, which are connected to one another via a thermoplastic intermediate layer 3 .
  • the windshield has an upper edge D facing the roof in the installed position and a lower edge M facing the engine compartment in the installed position.
  • the cross section of the composite pane 100 is shown in detail in various embodiments in Figures 1-3.
  • the edge area of the laminated pane is covered by an all-round black print 18 (all-round peripheral covering print), which is applied at least to the inside II of the outer pane.
  • the black print 18 is formed by printing an opaque enamel on the interior-side surface II (facing the interior of the vehicle in the installed position) of the second pane 2 .
  • a black print 18 can optionally also be applied to the inside IV of the first pane 1 .
  • the peripheral edge 8 of the hologram element 5 lies in the area of the black print 18, so that it cannot be seen when viewing the laminated pane from the outside. The distance of the hologram element 5 to the peripheral edge of the pane is thus smaller than the width of the black print 18.
  • FIG. 6 shows a schematic representation of a method according to the invention for producing a laminated pane 100, as shown in FIG. 2, for example.
  • step (a) the first pane 1 and the second pane 2 are provided.
  • step (b) steps A and B in the figure
  • a masking strip 4 is arranged on the outer surface III of the first pane 1 so that the masking strip 4 delimits a cutout 7 for a hologram element 5 .
  • the masking strip 4 is an adhesive tape and completely frames the section 7 that is provided for the hologram element 5 and thus specifies the dimensions of the hologram element 5 .
  • FIG. 8 shows a schematic plan view of the intermediate stage shown in FIG.
  • FIG. 6 (A) using the example of a rectangular pane. There you can see that the adhesive tape 4 extends to the edge of the pane.
  • the representation in Figure 6 (A) is accordingly a cross section along the section line C - C'.
  • the section 7 is pretreated with a plasma in order to activate the surface for the application of the photosensitive material (not shown).
  • a solution of dichromated gelatine is then applied as the photosensitive material in the cutout 7 delimited by the adhesive tape 4 .
  • the photosensitive material is applied over the entire surface of the entire outer surface III of the first pane 1 and is also applied to the adhesive tape, since this is simpler in terms of process technology.
  • the photosensitive material is applied in a uniform layer thickness using a curtain coating process.
  • the photosensitive material is then dried, which can happen under ambient conditions (25 °C). The result of this intermediate stage is shown in stage (B).
  • stage (B) to stage (C) is represented by two arrows.
  • the contour of the cutout 7 is first traced along the adhesive tape 4 with a knife 22 . This makes it easier to detach the adhesive tape 4 and results in an even peripheral edge 8 of the hologram element 5.
  • the adhesive tape 4 is then removed from the inner surface III of the first pane 1, so that a peripheral edge 8 of the hologram element 5 made of photosensitive material is exposed.
  • a frame area is formed all around the hologram element 5, in which no photosensitive material is arranged.
  • the hologram element 5 therefore does not extend to the pane edge and is protected in the finished laminated pane 100 from moisture or cleaning agents with which the pane edge can come into contact.
  • the step of cutting out and peeling off the adhesive tape can be done later after exposure.
  • At least one hologram is then produced in the hologram element by exposing the photosensitive material of the hologram element. This is done with a laser and is represented by the second arrow.
  • the exposure before lamination has the advantage that the hologram element is no longer sensitive to light.
  • a washing process is preferably carried out in which soluble components are removed from the dichromated gelatine layer by immersing the disc in various washing solutions. This post-treatment is known for photosensitive layers made of dichromated gelatin or with silver halides.
  • the pane is dried at a slightly higher temperature (50°C - 120°C). This leads to the intermediate step (C) shown in FIG.
  • the intermediate stage (D) From the intermediate stage (C) two paths lead to the intermediate stage (D), represented by different arrows.
  • the arrow on the left shows how a blocking film 6 in the form of a frame is applied to the first pane and then the thermoplastic intermediate layer 3 is placed on the hologram element 5 and the blocking film 6 .
  • the arrow on the right shows how the barrier film 6 is placed on the pane together with the thermoplastic intermediate layer 3 in the form of a pre-composite.
  • a blocking film 6 in the form of a peripheral frame is arranged directly adjacent to the peripheral edge 8 of the hologram element 5 .
  • the surrounding frame completely frames the hologram element without interruption.
  • the thickness of the blocking film 6 corresponds approximately to the thickness of the hologram element 5. In this way, air inclusions 30 in the area of the peripheral edge 8 of the hologram element can be avoided during lamination with the thermoplastic intermediate layer 3.
  • the barrier film 6 has a cutout 17 whose dimensions correspond to the dimensions of the cutout 7 defined by the adhesive tape 4 .
  • the barrier film 6 is designed as a continuous film, for example as a prefabricated PET frame.
  • the surface of the PET frame 6 facing the surface III of the first pane 1 is preferably coated with a thin layer of adhesive so that good adhesion to the first pane 1 is ensured and the PET frame 6 is prevented from slipping during lamination. This is particularly advantageous if the barrier film 6 is first placed on the first pane 1 and then the thermoplastic intermediate layer 3 is placed.
  • the barrier film 6 is first connected to the thermoplastic intermediate layer 3 to form a pre-composite, and then the pre-composite is placed on the first pane 1 with the hologram element 5 . Because the thermoplastic intermediate layer 3 and the barrier film 6 are used as a pre-composite, the barrier film 6 retains its inherent stability. In the case of large-area hologram elements 5 in particular, the blocking film 6, whose size is adapted to the hologram element 5, represents an unstable frame which, however, must be applied with a precise fit in order to prevent slipping in the layer stack. In addition, electrostatic effects occur when using a single barrier film, which further complicates handling.
  • the method thus offers a possibility for the simple production of a laminated pane with a hologram that is protected against the ingress of moisture or cleaning substances.
  • the process creates a clean all-round edge of the hologram element, which is sealed thanks to the barrier film.
  • FIG. 7 shows a cross section through an embodiment of a projection arrangement 101 according to the invention.
  • the projection arrangement 101 comprises a compound pane 100 according to an embodiment shown in FIG. 2 and a projector 19.
  • the projector 19 is arranged in an interior space.
  • the beam path for light emanating from a projector is provided with reference number 21 in the drawing.
  • the light emanating from the projector 19 hits the hologram element 5 and activates the hologram.
  • the light emitted by the projector 19 is reflected by the hologram element 5, so that the holograms are perceived by a viewer 20 as virtual or real images on the side of the laminated pane 100 facing away from him when his eyes are inside the so-called eyebox E.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Optics & Photonics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Holo Graphy (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

La présente invention concerne un procédé de production d'un panneau composite (100) avec un hologramme, comprenant au moins les étapes consistant à : a) fournir un premier panneau (1) et un second panneau (2), b) - disposer une bande de masquage (4) sur une surface (III) du premier panneau (1) de sorte que la bande de masquage (4) délimite une section (7) pour un élément hologramme (5), - appliquer un matériau photosensible (15) en tant qu'élément hologramme (5) au moins dans la section (7) délimitée par la bande de masquage (4), c) retirer la bande de masquage (4) de sorte qu'un bord périphérique (8) de l'élément hologramme (5) est découvert, d) générer au moins un hologramme en rendant visible l'élément hologramme (5), e) former un empilement de couches constitué du premier panneau (1), une couche intermédiaire thermoplastique (3) et un second panneau (2), l'élément hologramme (5) étant disposé entre les deux panneaux (1, 2), f) interconnecter le premier panneau (1) et le second panneau (2) au moyen de la couche intermédiaire thermoplastique (3) pour former un panneau composite (100) dans l'étendue d'un procédé de stratification.
PCT/EP2021/074375 2020-09-14 2021-09-03 Panneau composite pour affichage tête haute holographique Ceased WO2022053403A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21772788.2A EP4210943A1 (fr) 2020-09-14 2021-09-03 Panneau composite pour affichage tête haute holographique
CN202180003678.3A CN114585506A (zh) 2020-09-14 2021-09-03 用于全息平视显示器的复合玻璃板

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20195948.3 2020-09-14
EP20195948 2020-09-14

Publications (1)

Publication Number Publication Date
WO2022053403A1 true WO2022053403A1 (fr) 2022-03-17

Family

ID=72474228

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/074375 Ceased WO2022053403A1 (fr) 2020-09-14 2021-09-03 Panneau composite pour affichage tête haute holographique

Country Status (3)

Country Link
EP (1) EP4210943A1 (fr)
CN (1) CN114585506A (fr)
WO (1) WO2022053403A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024199990A1 (fr) 2023-03-30 2024-10-03 Saint-Gobain Glass France Agencement pour produire un affichage optique
EP4530061A1 (fr) * 2023-09-27 2025-04-02 Saint-Gobain Glass France Vitre composite pour un affichage tête haute holographique

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867901A (en) * 1968-06-03 1975-02-25 Eastman Kodak Co Apparatus for production of photographic elements
DE3909289A1 (de) 1988-03-24 1989-10-05 Ciba Geigy Ag Hologramme
DE68912246T2 (de) 1988-08-31 1994-05-11 Ppg Industries Inc Kraftfahrzeugwindschutzscheibe für ein Anzeige-Sichtsystem.
US5341230A (en) 1992-12-22 1994-08-23 Hughes Aircraft Company Waveguide holographic telltale display
EP0420228B1 (fr) 1989-09-28 1995-03-08 Hughes Aircraft Company Afficheur tête haute sans ghost pour automobile avec pare-brise biseauté
DE69020975T2 (de) 1989-01-23 1995-11-23 Hughes Aircraft Co Photoempfindliche emulsion für holographische platten und herstellungsverfahren.
JPH09113840A (ja) 1995-10-23 1997-05-02 Asahi Glass Co Ltd ヘッドアップディスプレイ
JPH11265139A (ja) * 1998-03-17 1999-09-28 Asahi Glass Co Ltd 多層体積ホログラムの作製方法
EP0999104A2 (fr) * 1998-11-02 2000-05-10 Central Glass Company, Limited Capteur de pluie et système d'exposition pour hologramme
US20040067323A1 (en) * 2000-11-10 2004-04-08 Clabburn Robin J.T. Optical recording materials
US7136205B1 (en) * 2005-10-24 2006-11-14 Itt Manufacturing Enterprises, Inc. Volume-phase holographic diffraction grating optimized for the ultraviolet spectral region
US20090176101A1 (en) * 2006-04-20 2009-07-09 Pilkington Group Limited Glazing
EP1438634B1 (fr) 2001-10-26 2011-03-16 Xetos AG Materiau de reproduction holographique et procede de formation d'un hologramme resistant a la lumiere
WO2012156124A1 (fr) 2011-05-16 2012-11-22 Robert Bosch Gmbh Affichage tête haute comportant des éléments optiques holographiques
DE102012211729A1 (de) 2012-07-05 2014-01-09 Bayerische Motoren Werke Aktiengesellschaft Kamerasystem zum Erfassen der Position eines Fahrers eines Kraftfahrzeugs
US20150205138A1 (en) 2012-08-02 2015-07-23 Carl Zeiss Ag Display device
US10061069B2 (en) 2012-06-22 2018-08-28 Luminit Llc Method for design and manufacturing of optics for holographic sight
WO2018188844A1 (fr) * 2017-04-12 2018-10-18 Saint-Gobain Glass France Disque composite à élément de fonction dont les propriétés optiques peuvent être commandées électriquement
US20190056596A1 (en) 2015-05-04 2019-02-21 Thalmic Labs Inc. Systems, devices, and methods for angle- and wavelength-multiplexed holographic optical elements
US10394032B2 (en) 2015-12-17 2019-08-27 Carl Zeiss Ag Optical system and method for transmitting a source image

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867901A (en) * 1968-06-03 1975-02-25 Eastman Kodak Co Apparatus for production of photographic elements
DE3909289A1 (de) 1988-03-24 1989-10-05 Ciba Geigy Ag Hologramme
DE68912246T2 (de) 1988-08-31 1994-05-11 Ppg Industries Inc Kraftfahrzeugwindschutzscheibe für ein Anzeige-Sichtsystem.
DE69020975T2 (de) 1989-01-23 1995-11-23 Hughes Aircraft Co Photoempfindliche emulsion für holographische platten und herstellungsverfahren.
EP0420228B1 (fr) 1989-09-28 1995-03-08 Hughes Aircraft Company Afficheur tête haute sans ghost pour automobile avec pare-brise biseauté
US5341230A (en) 1992-12-22 1994-08-23 Hughes Aircraft Company Waveguide holographic telltale display
JPH09113840A (ja) 1995-10-23 1997-05-02 Asahi Glass Co Ltd ヘッドアップディスプレイ
JPH11265139A (ja) * 1998-03-17 1999-09-28 Asahi Glass Co Ltd 多層体積ホログラムの作製方法
EP0999104A2 (fr) * 1998-11-02 2000-05-10 Central Glass Company, Limited Capteur de pluie et système d'exposition pour hologramme
US20040067323A1 (en) * 2000-11-10 2004-04-08 Clabburn Robin J.T. Optical recording materials
EP1438634B1 (fr) 2001-10-26 2011-03-16 Xetos AG Materiau de reproduction holographique et procede de formation d'un hologramme resistant a la lumiere
US7136205B1 (en) * 2005-10-24 2006-11-14 Itt Manufacturing Enterprises, Inc. Volume-phase holographic diffraction grating optimized for the ultraviolet spectral region
US20090176101A1 (en) * 2006-04-20 2009-07-09 Pilkington Group Limited Glazing
WO2012156124A1 (fr) 2011-05-16 2012-11-22 Robert Bosch Gmbh Affichage tête haute comportant des éléments optiques holographiques
US10061069B2 (en) 2012-06-22 2018-08-28 Luminit Llc Method for design and manufacturing of optics for holographic sight
DE102012211729A1 (de) 2012-07-05 2014-01-09 Bayerische Motoren Werke Aktiengesellschaft Kamerasystem zum Erfassen der Position eines Fahrers eines Kraftfahrzeugs
US20150205138A1 (en) 2012-08-02 2015-07-23 Carl Zeiss Ag Display device
US20190056596A1 (en) 2015-05-04 2019-02-21 Thalmic Labs Inc. Systems, devices, and methods for angle- and wavelength-multiplexed holographic optical elements
US10394032B2 (en) 2015-12-17 2019-08-27 Carl Zeiss Ag Optical system and method for transmitting a source image
WO2018188844A1 (fr) * 2017-04-12 2018-10-18 Saint-Gobain Glass France Disque composite à élément de fonction dont les propriétés optiques peuvent être commandées électriquement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024199990A1 (fr) 2023-03-30 2024-10-03 Saint-Gobain Glass France Agencement pour produire un affichage optique
EP4530061A1 (fr) * 2023-09-27 2025-04-02 Saint-Gobain Glass France Vitre composite pour un affichage tête haute holographique

Also Published As

Publication number Publication date
CN114585506A (zh) 2022-06-03
EP4210943A1 (fr) 2023-07-19

Similar Documents

Publication Publication Date Title
WO2022053404A1 (fr) Procédé de production d'une vitre composite dotée d'un hologramme
WO2022073860A1 (fr) Vitre de véhicule pour affichage tête haute
WO2019242915A1 (fr) Procédé de fabrication d'un écran composite ayant un revêtement sélectif en polarisation
EP4164881B1 (fr) Vitre composite doté d'un élément holographique et son procédé de fabrication
WO2022161894A1 (fr) Vitre de véhicule pour un affichage tête haute
EP3621804A1 (fr) Procédé de fabrication d'un film combiné thermoplastique
WO2022053403A1 (fr) Panneau composite pour affichage tête haute holographique
WO2021245031A1 (fr) Vitre composite dotée d'un élément hologramme
EP4164882A1 (fr) Panneau composite avec un élément holographique et procédé pour sa production
WO2020020614A1 (fr) Vitre feuilletée comprenant un élément fonctionnel doté de propriétés optiques pouvant être commandées électriquement comprenant un scellement de bords amélioré
DE10220299A1 (de) Verbundscheibe mit einem Folienlaminat
WO2023144085A1 (fr) Vitre composite dotée d'un élément hologramme et d'un revêtement antireflet
WO2022053548A1 (fr) Procédé et dispositif de revêtement d'une plaque incurvée avec un matériau photosensible
WO2022268691A1 (fr) Vitrage feuilleté comportant un film fonctionnel à impression opaque
WO2021069354A1 (fr) Procédé de fabrication d'une vitre composite dotée d'un élément fonctionnel
DE202021100222U1 (de) Verbundscheibe mit Sonnenblendschutz-Bereich mit verbesserter Wärmeschutzfunktion
WO2020094420A1 (fr) Vitre feuilletée présentant une section transversale cunéiforme
EP3826836A1 (fr) Procédé de fabrication d'une vitre feuilletée comprenant un élément fonctionnel doté de propriétés optiques pouvant être commandées électriquement
WO2022101194A1 (fr) Vitre stratifiée comprenant un élément d'hologramme et un élément fonctionnel électrochrome
WO2022268554A1 (fr) Procédé de production d'une feuille stratifiée dotée d'un film d'affichage réfléchissant
EP4126539B1 (fr) Procédé de fabrication d'une vitre composite pourvue de film d'affichage
DE202021004023U1 (de) Verbundscheibe
WO2023144084A1 (fr) Procédé de fabrication de vitre composite comprenant au moins un hologramme
EP4530061A1 (fr) Vitre composite pour un affichage tête haute holographique
EP4544355A1 (fr) Vitre composite dotée d'un élément hologramme et d'une couche à forte réfraction optique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21772788

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2021772788

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2021772788

Country of ref document: EP

Effective date: 20230414