CN115668036A - Vehicle glazing for head-up display - Google Patents

Vehicle glazing for head-up display Download PDF

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Publication number
CN115668036A
CN115668036A CN202180040359.XA CN202180040359A CN115668036A CN 115668036 A CN115668036 A CN 115668036A CN 202180040359 A CN202180040359 A CN 202180040359A CN 115668036 A CN115668036 A CN 115668036A
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CN
China
Prior art keywords
vehicle
light
glazing
vehicle glazing
image display
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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
CN202180040359.XA
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Chinese (zh)
Inventor
A·戈梅尔
A·罗德布格
V·舒尔茨
D·林霍费尔
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
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Saint Gobain Glass France SAS
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Filing date
Publication date
Application filed by Saint Gobain Glass France SAS filed Critical Saint Gobain Glass France SAS
Publication of CN115668036A publication Critical patent/CN115668036A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • B32B17/10045—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 with at least one intermediate layer consisting of a 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
    • B32B17/10082—Properties of the bulk of a glass sheet
    • B32B17/10091—Properties of the bulk of a glass sheet thermally hardened
    • 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
    • B32B17/1044—Invariable transmission
    • 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
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/1077—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyurethane
    • 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
    • B32B17/10788—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
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00—Mobile visual advertising
    • G09F21/04—Mobile visual advertising by land vehicles
    • G09F21/049—Mobile visual advertising by land vehicles giving information to passengers inside the vehicles
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • 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
    • B32B2419/00—Buildings or parts thereof
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • 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
    • B32B2605/00—Vehicles
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • 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
    • G02B2027/0192—Supplementary details
    • G02B2027/0194—Supplementary details with combiner of laminated type, for optical or mechanical aspects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/227—Electroluminescent displays for vehicles

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Optics & Photonics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Instrument Panels (AREA)

Abstract

The invention relates to a vehicle glazing (1) for a head-up display (100) having an outer side (I) facing the outside environment (13) and an inner side (IV) facing the vehicle interior in the mounted state, comprising: -at least one transparent glass pane (2, 3) -at least one shading strip (5) in an edge region (11) of the glass pane (2, 3), -at least one light-guiding device (9) for guiding light into a vehicle interior space (12) or at least one image display device for displaying image information, which is arranged in the region of the shading strip (5) on the vehicle interior space side of the shading strip.

Description

Vehicle glazing for head-up display
The invention relates to a vehicle glazing for a head-up display, to a method for the production thereof and to the use thereof, and to a head-up display having said vehicle glazing and to a correspondingly equipped vehicle.
Vehicles, in particular passenger cars (PKW), are increasingly equipped with displays or so-called head-up displays (HUD) in or on the glazing, as disclosed, for example, in JP H06 279071A, DE 10 2016 211823 A1 or WO 2019/120850 A1. Head-up displays are provided for displaying image information for a viewer or driver. Using a projector as an image generator (Bildgeber), for example in the region of the dashboard or in the region of the roof of a vehicle, an image is projected onto the windshield, reflected there and perceived by the driver as a virtual image behind the windshield. In this way, important information, such as the current driving speed, navigation or warning cues, can be projected into the driver's field of view, which can be perceived by the driver without having to move his line of sight away from the traffic lane. Accordingly, the head-up display can make a significant contribution to improving traffic safety.
Generally, a vehicle glass sheet used as a windshield consists of two vitreous glass sheets laminated to each other by at least one thermoplastic film. The problem of the projector image being reflected on both surfaces of the windshield occurs in the case of the above-described head-up display. Thus, the driver not only perceives a desired main image caused by reflection (primary reflection) on the side surface of the windshield interior space. The driver also perceives a slightly misaligned, usually less intense secondary image, which is caused by reflection (secondary reflection) on the outside surface of the windshield. This problem is usually solved in that the reflective surfaces are arranged at a specifically selected angle to one another, so that the primary image and the secondary image overlap, whereby the secondary image is no longer obtrusively noticeable.
Vehicle glazing panels having transparent conductive coatings are also known. These coatings can be used, for example, as infrared-reflective coatings to reduce heating of the vehicle interior and thus improve thermal comfort, or as heatable coatings, in which they are connected to a voltage source such that an electric current flows through the coating. In connection with head-up displays, vehicle glazing panels with conductive coatings in the interior of composite glazing have the problem of forming another reflective interface for the projector image from the conductive coating. This also produces undesirable side images.
The components of a head-up display must in principle be arranged in the vehicle in such a way that the viewer can see the projected image, which necessarily imposes restrictions on the arrangement itself in the vehicle, since the reflection of the light rays on the reflective surface of the vehicle glazing satisfies the condition that the angle of incidence corresponds to the angle of reflection.
In designing head-up displays, care must furthermore be taken to ensure that the projector has a commensurately high power, so that the projected image, especially under daylight incidence, has sufficient brightness and is readily recognizable by the viewer. This requires a certain projector size and a corresponding power consumption.
On the contrary, it is an object of the invention to provide an improved head-up display in which these disadvantages can be avoided. It is therefore desirable to have a head-up display in which no undesired secondary images occur and whose arrangement in the vehicle should be relatively easy to implement with good recognizability because the displayed image information has sufficient brightness and contrast. The power consumption of the projector should be relatively small. Furthermore, in industrial mass production of vehicles, the head-up display should be easy and cost-effective to produce.
These and other objects are achieved according to the proposal of the invention by a vehicle glazing and a head-up display with such a vehicle glazing and a correspondingly equipped vehicle according to the independent claims. Advantageous embodiments of the invention emerge from the dependent claims.
According to the present invention, a vehicle glazing for separating a vehicle interior space from an environment external to the vehicle is shown. The vehicle glazing panel comprises at least one transparent glazing panel. The vehicle glazing can in principle be designed as desired, in particular as a thermally tempered single-layer safety glazing or a composite glazing. The vehicle glazing is preferably used as a vehicle windscreen.
Preferably, the vehicle glass pane, in particular the vehicle windshield, according to the invention is designed as a composite glass pane and comprises a first glass pane having an outer side and an inner side and a second glass pane having an inner side and an outer side, which are firmly connected to one another by at least one thermoplastic interlayer (adhesive layer). The first glass sheet may also be referred to as the outer glass sheet and the second glass sheet as the inner glass sheet. The surfaces or sides of the two single-ply glass sheets are generally referred to as the I side, II side, III side, and IV side from the outside to the inside.
In the mounted state in the vehicle, the vehicle glazing according to the invention has an outer side facing the external environment and an inner side facing the interior space of the vehicle. In the case of a vehicle glazing designed as a composite glazing, the outer side of the first glazing is the outer side of the vehicle glazing, and the inner side of the second glazing is the inner side of the vehicle glazing.
The vehicle glazing according to the invention has at least one masking strip in the edge region of the edge of the glazing which normally adjoins the glazing. The at least one screening strip is a coating consisting of one or more layers and serves to screen the structure that is otherwise visible through the glass pane in the mounted state. In particular in the case of a vehicle glazing for a vehicle, the masking strip serves to mask the bead of adhesive (klebereaup) used to glue the vehicle glazing into the vehicle bodywork, i.e. to prevent the outward bead of adhesive, which is usually applied irregularly, from being seen, thus giving a harmonious overall impression of the vehicle glazing. On the other hand, the masking strip serves as uv protection for the adhesive material used. Continued exposure to ultraviolet radiation damages the adhesive material and over time the attachment of the glass panels to the vehicle body will loosen.
The at least one masking strip comprises a coloured, preferably black, colouring material, which is preferably burnt into the glass pane. Preferably, at least one masking strip is opaque, in particular black, to serve, for example, as a sight protection and UV protection for the adhesive bead. In the case of glass panes with an electrically controllable functional layer, the shielding strip can also be used, for example, to cover the bus bar and/or the connection end.
In the sense of the present invention, "transparent" means that the overall transmission of the vehicle glazing meets the legal requirements for windshields and preferably has a transmission for visible light of more than 70%, in particular more than 75%, for example more than 95%. Accordingly, "opaque" means a light transmission of less than 30%, particularly less than 25%, for example less than 5%, particularly 0%.
The vehicle glazing according to the invention further comprises at least one light-guiding means for guiding light into the vehicle interior space and/or at least one image display means (e.g. an LED display) for displaying image information. It is essential here that the light-guiding device or the image display device is arranged in the region of the shading strip, on the vehicle interior side of the shading strip. The light-guiding means are thus located in front of the screening strips, seen from the inside of the vehicle glazing.
The expression "in the region of the shading strip" means that the at least one light-guiding device or the at least one image display device is arranged coincident with or overlapping the shading strip in a vertical view through the vehicle glazing or in an orthogonal projection. The light-guiding device or the image display device and the at least one masking strip are preferably arranged on different sides of the vehicle glazing. The expression "directing light into the vehicle interior space" refers to the mounted state of the vehicle glazing in the vehicle. The light deflected in this way leaves the vehicle glazing at the inside of the vehicle glazing.
The at least one light-guiding device or the image display device is preferably designed in the form of a film, which allows simple integration and connection to at least one glass pane, in particular to a composite glass pane.
In the installed state in the vehicle, the light-guiding device is assigned a projector arranged in the vehicle interior as an image generator, for example in the region of the dashboard or in the region of the roof, whose image is guided (deflected) by the light-guiding device into the vehicle interior. The light of the projector is directed to the inside of the vehicle glazing and impinges there on the light-guiding means.
According to a preferred embodiment of the vehicle glazing of the invention, the light-directing device is a holographic light-directing device comprising at least one holographic optical element adapted to direct light. The holographic light guide is designed to deflect incoming light into the interior space of the vehicle. Specific embodiments of holographic optical elements suitable for deflecting light, such as holographic mirrors or lenses, are well known to those skilled in the art, are not necessary for an understanding of the present invention, and have been discussed many times in the patent literature (particularly in connection with holographic head-up displays) and need not be discussed in greater detail herein.
The holographic light guiding device is preferably designed such that the incident light beam of the projector can also be deflected into the vehicle interior space at an angle different from the angle of incidence, i.e. it is not necessary to satisfy the same conditions for the angle of incidence and the angle of emergence for the reflection. The light guidance in the holographic optical element is in particular performed by light diffraction.
According to another preferred embodiment of the vehicle glazing of the invention, the light guiding means is a holographic waveguide. A holographic waveguide generally comprises a coupling-in region with a volume hologram for coupling in light into the waveguide and a coupling-out region with a volume hologram for coupling out light coupled into the waveguide from the waveguide. Holographic waveguides are also well known to the person skilled in the art, in particular from the patent literature (see for example WO 2020/157307), and it is therefore not necessary here to discuss them in more detail. It is essential here that at least the coupling-out region is arranged in the region of the at least one shading strip, so that the light coupled into the waveguide is guided in the region of the shading strip in the direction of the vehicle interior. The light can also be coupled into the holographic waveguide outside the region of the shading strip.
Instead of providing the vehicle glazing with an image display, the image display device has an image display, the image of which can be directly seen by a viewer, in particular a driver. The image display device is preferably a transparent image display device, in particular a display, such as an LED display, an OLED display, an EL display or a μ LED display.
The invention is based on the recognition that a light-guiding device or an image display device which coincides with at least one normally opaque masking strip enables a good image display with a high contrast to the masking strip, so that it appears bright and therefore also very well recognizable. This can advantageously reduce the size of the projector or the size of the image display device in the vehicle glazing and reduce the energy consumption. This is a great advantage of the invention.
The holographic light guiding device is preferably designed such that the incident light beam of the projector can also be deflected into the vehicle interior space at an angle different from the angle of incidence, i.e. the conditions for the same angle of incidence and angle of emergence applicable to reflection do not have to be fulfilled. The same applies to an image display apparatus whose image display can be seen by a viewer from different angles. The vehicle glazing can thus advantageously enable a greater degree of freedom in the arrangement of the components of the head-up display in the vehicle. This is another great advantage of the present invention.
Furthermore, by using light-guiding means, in particular holographic light-guiding means, or image display means, if they are arranged on the outer side of at least one glass plate (IV side of the composite glass plate), undesirable secondary images can advantageously be avoided.
The head-up display according to the invention can therefore be realized cost-effectively and in a technically simple manner, wherein in particular only a relatively small region of the vehicle glazing has to be equipped with a light-guiding device or an image display device.
The at least one masking strip is preferably applied to the at least one glass plate in a printing process, in particular a screen printing process. The printing ink is printed on a glass plate and then dried or baked, for example at temperatures of up to 700 ℃. The printing inks are preferably durable to light, solvents and abrasion. The at least one shading strip may especially be transformed into dots of different sizes. These so-called screen-printed dots are intended to eliminate the visually large (massiven) impression of black screen-printed edges.
The at least one masking strip is preferably black and may also be referred to as black print or overlay print. The material of the masking strip can also be applied to the glass plate by other common application methods, such as brushing, rolling, spraying, etc., and then preferably baked.
According to a preferred embodiment of the vehicle glazing panel, the at least one shading strip consists of a single layer. This has the advantage that the vehicle glazing unit is particularly simple and inexpensive to manufacture, since only one layer for the masking strip has to be formed.
In principle, at least one masking strip can be applied on each side of the glass plate. In the case of a composite glass pane, it is preferably applied on the inner side (side II) of the first glass pane and/or on the inner side (side III) of the second glass pane, where it is protected from external influences. Particularly preferably, it is applied on the inner side (side II) of the first glass pane.
According to a preferred embodiment of the vehicle glazing according to the invention formed in the form of a composite glazing, the light-directing device or the image display device is laminated into two thermoplastic interlayers between two single glazing panels, whereby the at least one light-directing device or the at least one image display device is well protected from external influences. The lamination of the light guide device or the image display device may be performed by laminating the respective glass sheets of the composite glass sheet. In order to avoid glass breakage, it is advantageous if the thickness of the thermoplastic film at the location where the light-directing means or the image display means are provided is smaller than the thickness of the thermoplastic film at the location where no light-directing means or image display means are provided, so that the difference in thickness caused by the at least one light-directing means or the at least one image display means is compensated for and the area between the two glass panes has a generally constant thickness.
According to a further preferred embodiment of the vehicle glazing of the invention, the light-directing device or the image display device is arranged on the outer side (IV side) of the second glazing panel, which makes manufacture particularly simple. In this case, it is advantageous if the light-guiding device or the image display device is covered by a cover layer, in particular a polymer layer or a vitreous layer, in order to protect it from external influences. The vitreous layer can be arranged on the composite glass pane, in particular, by means of a thermoplastic interlayer.
According to a further preferred embodiment of the vehicle glazing of the invention, in addition to the (opaque) shading strip on the inner side (side II) of the first glazing panel, at least one further shading strip is arranged on the inner side (side III) of the second glazing panel and/or on the outer side (side IV) of the second glazing panel. The further shielding strip is particularly preferably arranged only on the inner side (side III) of the second glass pane or only on the outer side (side IV) of the second glass pane. This additional masking strip serves to improve the adhesion of the glass pane and is preferably mixed with ceramic particles which impart a rough and adhesive surface to the masking strip, which promotes, for example, the adhesion of the vehicle glass pane into the vehicle bodywork on the IV side. On side III, this facilitates lamination of two single glass sheets of the composite glass sheet. Preferably, the masking strip arranged on side II is also mixed with ceramic particles.
In the portion where the light guiding means or the image display means is arranged coincident with the opaque masking strip, the masking strip preferably has a widening, i.e. has a larger width (dimension perpendicular to the extension) than in the other portion. In this way, the shading strip can be matched in a suitable manner to the dimensions of the light guide device or the image display device.
At least one of the glass panes comprises or preferably consists of glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass, aluminosilicate glass, or a transparent plastic, preferably a rigid transparent plastic, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and/or mixtures thereof. Suitable glasses are known, for example, from EP 0 847 965 B1.
At least one of the glass plates may be transparent or may also be tinted or colored. Here, according to ECE-R43, the windscreen must have sufficient light transmission in the central viewing zone, preferably at least 70% in the main see-through zone a. At least one of the glass sheets is preferably curved, that is to say it has a curvature.
At least one of the glass plates may have other suitable coatings known per se, such as an anti-reflective coating, a non-stick coating, an anti-scratch coating, a photocatalytic coating or a sun-block coating or a low-E coating.
The thickness of at least one glass sheet, in particular of the two single-layer glass sheets of the composite glass sheet, can vary widely and be adapted to the requirements of the individual case. Glass plates with a standard thickness of 1.0mm to 25mm, preferably 1.4mm to 2.1mm, are preferably used. The size of the glass sheets can vary widely and depends on the application.
The vehicle glazing may have any three-dimensional shape. Preferably, at least one of the glass plates has no shadow zone, so that it can be coated, for example, by cathode sputtering. Preferably, at least one glass plate is planar or slightly or strongly curved in one or more directions in space. At least one of the glass sheets may be clear or tinted.
The at least one thermoplastic interlayer comprises or consists of at least one thermoplastic, preferably polyvinyl butyral (PVB), ethylene Vinyl Acetate (EVA) and/or Polyurethane (PU) or copolymers or derivatives thereof, optionally in combination with polyethylene terephthalate (PET). However, the thermoplastic interlayer may also comprise, for example, polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethylmethacrylate, polyvinylchloride, polyacetate resins, casting resins, acrylates, fluorinated ethylene propylene copolymers, polyvinylfluoride, and/or ethylene-tetrafluoroethylene, or copolymers or mixtures thereof.
The thermoplastic interlayer comprises or preferably consists of polyvinyl butyral (PVB), particularly preferably of polyvinyl butyral (PVB) and additives known to the person skilled in the art, such as plasticizers. The thermoplastic intermediate layer preferably comprises at least one plasticizer.
Plasticizers are compounds which make plastics softer, tougher and/or more elastic. They shift the thermoelastic range of the plastic to lower temperatures, giving the plastic the desired more elastic properties in the temperature range of use. Preferred plasticizers are carboxylic acid esters, in particular the less volatile ones, fats, oils, soft resins and camphor. The other plasticizer is preferably an aliphatic diester of triethylene glycol or tetraethylene glycol. It is particularly preferred to use 3G7, 3G8 or 4G7 as plasticizer, where the first digit represents the number of ethylene glycol units and the last digit represents the number of carbon atoms in the carboxylic acid moiety of the compound. For example, 3G8 represents triethylene glycol-bis- (2-ethylhexanoate), i.e., formula C 4 H 9 CH (CH 2 CH 3 ) CO (OCH 2 CH 2 ) 3 O 2 CCH (CH 2 CH 3 ) C 4 H 9 The compound of (1).
Preferably, the thermoplastic intermediate layer comprises at least 3 wt.%, preferably at least 5 wt.%, particularly preferably at least 20 wt.%, still more preferably at least 30 wt.%, in particular at least 40 wt.% of a plasticizer. The plasticizer comprises or preferably consists of triethylene glycol-bis- (2-ethylhexanoate).
Further preferably, the thermoplastic interlayer comprises at least 60% by weight, particularly preferably at least 70% by weight, in particular at least 90% by weight, for example at least 97% by weight, of polyvinyl butyral.
The thermoplastic interlayer may be formed from a single layer of film or from more than one layer of film.
The thermoplastic intermediate layer may be formed from one or more layers of thermoplastic film arranged on top of each other, wherein the thickness of the thermoplastic intermediate layer is preferably 0.25mm to 1mm, typically 0.38mm or 0.76mm.
The thermoplastic intermediate layer may also be a functional thermoplastic intermediate layer, in particular an intermediate layer having acoustic damping properties, an infrared radiation reflecting intermediate layer, an infrared radiation absorbing intermediate layer and/or a UV radiation absorbing intermediate layer. For example, the thermoplastic interlayer can also be a band filter film that fades out a narrow band of visible light.
The invention also relates to a head-up display with a vehicle glazing according to the invention. In the case of a head-up display having at least one light guide, in particular a holographic light guide, the head-up display comprises an image generator in the form of a projector, which is assigned to the light guide. The light (image information) generated by the projector is directed at the light guiding means and deflected by it into the vehicle interior space, thereby forming the projection means. If a plurality of light-guiding means are provided, a corresponding number of projectors each assigned to a light-guiding means can be provided. If an image display device, such as an LED display, is provided instead of the light guiding device, no projector is needed.
The invention also relates to a vehicle with a head-up display according to the invention.
Furthermore, the invention relates to a method for manufacturing a vehicle glazing according to the invention. The method comprises the following steps:
(a) Applying at least one masking strip in the edge region of at least one glass sheet,
(b) In the region of the shading strip, on the vehicle interior side of the shading strip, at least one light-guiding device for guiding light into the vehicle interior or at least one image display device for displaying image information is arranged.
The at least one masking strip is preferably applied to the at least one glass pane in a printing process, in particular in a screen printing process, or by other customary application methods, such as brushing, rolling, spraying, etc., and is then preferably baked. The light-guiding device or the image display device for guiding light into the vehicle interior space is preferably laminated between two thermoplastic films or fixed on the outside of the second glass pane (inner glass pane).
To produce a composite glass pane, at least two glass panes are connected (laminated) to one another by at least one thermoplastic adhesive layer, preferably under the action of heat, vacuum and/or pressure. Methods known per se for manufacturing composite glass sheets can be used. For example, the so-called autoclave process may be carried out at high pressures of about 10 to 15 bar and temperatures of 130 to 145 ℃ for about 2 hours. The vacuum bag or vacuum ring method known per se works, for example, at approximately 200 mbar and 130 ℃ to 145 ℃. The two glass sheets and the thermoplastic interlayer may also be pressed in a calender between at least one pair of rollers to form a composite glass sheet. Apparatuses of this type for manufacturing composite glass sheets are known and generally have at least one heating channel before the press. The temperature during the pressing process is, for example, 40 ℃ to 150 ℃. In practice, a combination of calendering and autoclave processes has proved to be particularly advantageous. Alternatively, a vacuum laminator may be used. These consist of one or more heatable and evacuable chambers, wherein the first glass plate and the second glass plate can be laminated within, for example, about 60 minutes at a reduced pressure of 0.01 mbar to 800 mbar and a temperature of 80 ℃ to 170 ℃.
The invention also relates to the use of a vehicle glazing according to the invention in a vehicle for land, air or water traffic, in particular in a motor vehicle. According to the invention, the use of the vehicle glazing in a motor vehicle, in particular as a vehicle windscreen, is preferred.
The composite glass sheet may advantageously be a windscreen or roof glass of a vehicle or other vehicle glazing, for example a bulkhead in a vehicle, preferably a bulkhead in a rail vehicle or bus. Alternatively, the composite glass sheet may be an architectural glazing, such as a partition in the facade of a building or in the interior of a building.
The various embodiments of the invention may be implemented individually or in any combination. In particular, the features mentioned above and to be explained below can be used not only in the combination given but also in other combinations or alone without departing from the scope of the invention.
The invention is explained in more detail below with the aid of embodiments, in which reference is made to the appended drawings. It is shown in simplified, not to scale, drawings:
figure 1 is a cross-sectional view of one embodiment of a heads-up display according to the present invention,
figure 2 is a plan view of the vehicle glazing of figure 1,
figures 3-6 are cross-sectional views of various embodiments of a vehicle glazing panel,
fig. 7 is a flow chart illustrating a method according to the present invention.
Fig. 1 and 2 can be observed first. Fig. 1 shows a greatly simplified schematic representation of a sectional view of an embodiment of a head-up display 100 according to the invention in a vehicle. A plan view of the vehicle glazing 1 of the head-up display 100 is shown in fig. 2. The cross-sectional view of fig. 1 corresponds to the section line AA of the vehicle glazing panel 1 as shown in fig. 2.
The vehicle glazing panel 1 is designed in the form of a composite glazing panel (see also fig. 3 to 6) and comprises a first glazing panel 2 (e.g. an outer glazing panel) and a second glazing panel 3 (e.g. an inner glazing panel) which are firmly connected to one another by a thermoplastic interlayer 4. The vehicle glazing 1 is installed in a vehicle and separates a vehicle interior space 12 from an external environment 13. The vehicle glazing panel 1 is, for example, a windshield of a motor vehicle. Alternatively, the vehicle glazing has only a single ply of glass, preferably in the form of a single ply of thermally tempered safety glass (not shown).
The first glass plate 2 and the second glass plate 3 are each made of glass, preferably thermally tempered soda lime glass, and are transparent to visible light. The thermoplastic interlayer 4 consists of a thermoplastic, preferably polyvinyl butyral (PVB), ethylene Vinyl Acetate (EVA) and/or Polyurethane (PU), optionally in combination with polyethylene terephthalate (PET).
The outer surface I of the first glass pane 2 faces the outside environment 13 and is at the same time the outer surface of the vehicle glass pane 1. The inner surface II of the first glass pane 2 and the outer surface III of the second glass pane 3 are each directed towards the intermediate layer 4. The inner surface IV of the second glass pane 3 faces the vehicle interior space 12 and is at the same time the inner surface of the vehicle glass pane 1. It goes without saying that the vehicle glazing 1 may have any suitable geometry and/or curvature. As the vehicle glass panel 1, it generally has a convex dome shape.
In the edge region 11 of the vehicle glazing unit 1, a circumferential frame-like first shading strip 5 is located on the inner side (II side) of the first glazing unit 2. The first obscuration band 5 is opaque and prevents visibility of structures disposed on the inside of the vehicle glazing 1, such as adhesive beads used to glue the vehicle glazing 1 into the vehicle bodywork. The first masking strip 5 is preferably black. The first masking strip 5 is composed of a non-conductive material commonly used for masking strips, such as a fired-in black pigmented screen printing ink.
Furthermore, the vehicle glazing 1 has a second shading strip 6 made of a non-conductive material in the edge region 11 on the outer side IV of the second glazing 3. The second masking strip 6 is formed to surround in a frame shape. Like the first masking strip 5, the second masking strip 6 is composed of a non-conductive material commonly used for masking strips, such as a fired-in black pigmented screen printing ink.
The holographic light guide 9 is located on the outer side IV of the second glass plate 3, which is designed here, for example, as a holographic mirror. In a vertical view through the vehicle glazing 1, the light-guiding means 9 are arranged such that the first obscuration band 5 coincides, wherein the first obscuration band 5 completely covers the light-guiding means 9. The light-guiding device 9 is arranged here, for example, only in a lower (engine-side) part 11' of the edge region 11 of the vehicle glazing unit 1. However, it is also possible to arrange the light guiding means 9 in the upper (top) part 11 ″ or in a side part of the edge area 11. Furthermore, a plurality of light guiding means 9 may be provided, which are arranged, for example, in the lower (engine-side) portion 11' and in the upper (top-side) portion 11 ″ of the edge region 11. For example, the light guiding means 9 may be arranged in such a way that a (partially) surrounding image is generated.
The first masking strip 5 is widened in a lower (engine-side) portion 11 'of the edge region 11, i.e. the first masking strip 5 has a greater width in the lower (engine-side) portion 11' of the edge region 11 than in an upper (top-side) portion 11 ″ of the edge region 11 (and side portions of the edge region 11 which are not visible in fig. 1). "width" is understood to mean the dimension of the first masking strip 5 perpendicular to its extension. The light-guiding means 9 are here arranged, for example, above (i.e. not coinciding with) the second shading strip 6.
The head-up display 100 also has a projector 8, which is an image generator, here arranged, for example, in the dashboard 7, corresponding to an exemplary positioning of the light-guiding device 9 in the lower portion 11' of the edge region 11. The projector 8 serves to generate light 10 (image information) which is directed at the light-guiding means 9 and is guided as deflected light 10' by the light-guiding means 9 into the vehicle interior 12, where it can be seen by a viewer, for example a driver. If the light-guiding means 9 is positioned in a suitable manner for this purpose, it is also possible, for example, to arrange the projector 8 in the a-pillar or at the roof of the motor vehicle (in each case on the vehicle interior side). If a plurality of light guiding means 9 is provided, a separate projector 8 may be assigned to each light guiding means 9, i.e. a plurality of projectors 8 may be arranged. For example, the vehicle glazing panel 1 may also be a sunroof, side window or rear window.
In the plan view of fig. 2, the light guiding means 9 is shown extending along a lower portion 11' of the edge region 11.
Referring now to fig. 3 to 6, there are shown cross-sectional views of various embodiments of a vehicle glazing panel 1. The sectional views of fig. 3 to 6 correspond to the section linebase:Sub>A-base:Sub>A in the lower part 11' of the edge region 11 of the vehicle glazing panel 1 as shown in fig. 2.
In the variant of the vehicle glazing 1 shown in fig. 3, a first (opaque) shading strip 5 is located on the inner side (side II) of the first glazing 2. The light-guiding means 9 is designed as a film and is laminated into the composite glass pane between two thermoplastic interlayers 4, 4' (for example PVB films). In order to compensate for the height difference (jump in thickness) caused by the light-guiding means 9 (e.g. a holographic film) from the rest of the vehicle glazing 1, it is advantageous if the thermoplastic intermediate layer 4, 4' has a correspondingly smaller thickness than outside this region where no light-guiding means 9 is provided. A uniform distance (i.e. a constant total thickness) between the two glass plates 2, 3 can thereby be achieved, so that glass breakage which may occur during lamination is reliably and safely avoided. When using, for example, PVB films, their thickness in the area of the light-guiding means 9 is smaller than in the area where no light-guiding means 9 is provided.
Although the light guiding device 9 is shown schematically and in a greatly simplified manner as a single layer in fig. 3, it goes without saying that the light guiding device 9 is typically composed of a combination of different materials commonly used for holographic applications, such as photopolymers, dichromated gelatin or silver halides, which may be enclosed on one or both sides by polymer films (e.g. PA, PET, TAC, PMMA, PC, \ 8230;). Here, the inner film and the outer film do not necessarily have to be composed of the same polymer. The exact construction of the light guiding means 9 is not essential for understanding the invention of the present invention and therefore it is not necessary to discuss it in more detail here.
In the variant of the vehicle glazing 1 shown in fig. 4, a first (opaque) masking strip 5 is located on the inner side (II side) of the first glazing panel 2. The first glass pane 2 is firmly connected to the second glass pane 3 by means of the thermoplastic film 4. The light-guiding means 9 is designed as a film and is arranged on the outer side (IV side) of the second glass pane 3 by means of a further thermoplastic interlayer 4'. A cover layer 14, for example a polymer layer or a thin vitreous layer, is applied over the light-guiding means 9.
The variant of the vehicle glazing 1 shown in fig. 5 differs from the variant of fig. 3 only in that, in addition to the (opaque) first shading strip 5, two further second shading strips 6,6' are arranged on the inner side (side III) and the outer side (side IV) of the second glazing 3. These two second shading strips 6,6' serve to improve the adhesion when manufacturing and mounting the vehicle glazing panel 1. Here, the two second shading strips 6,6 'are designed so thin that the light guiding device 9 is illuminated by the light 10 of the projector 8 and the light 10' deflected into the vehicle interior 12 can be seen by the viewer.
Although two further screening strips 6,6' are shown in fig. 5, it is strongly preferred that only one of the two second screening strips 6,6', i.e. screening strip 6 or screening strip 6', is provided.
The variant of the vehicle glazing unit 1 shown in fig. 6 likewise differs from the variant of fig. 4 only in that, in addition to the (opaque) first shading strip 5, two further second shading strips 6,6' are arranged on the inner side (side III) and the outer side (side IV) of the second glazing unit 3. Since the light-guiding means 9 are arranged on the outer side (IV side) of the second glass plate 3, the two further screening strips 6,6' can also be opaque. As already explained in detail with regard to fig. 5, it is strongly preferred to provide only one of the two second shading strips 6,6', namely the shading strip 6 or the shading strip 6'.
The light-guiding means 9 can also be designed as a holographic waveguide, in which the coupling-out of the light 10' coincides with the first shading strip 5. The light 10 can also be coupled in the region of the glass plate which does not coincide with the first shading strip 5. The above detailed description similarly applies here.
In an alternative embodiment, instead of the light-guiding means 9 shown in fig. 1 to 6, an image display means (display), for example an LED display, is provided. The viewer can directly recognize the image displayed by the image display apparatus. The projector 8 is of course not required in this case, since the image display device itself serves as the image generator.
In all embodiments, the light guiding device 9 (or image display device) is arranged on the vehicle interior space side of the first shade strip 5. The light-guiding means 9 are arranged in front of the screening strip 5 if the inside of the vehicle glazing is viewed or (directly) viewed from the vehicle interior space.
Fig. 7 shows a method according to the invention by means of a flow chart. In a first step I, at least one (opaque) masking strip 5 is applied in an edge region 11 of at least one glass pane 2, 3. In a second step, in the region of the shading strip 5, on the vehicle interior space side of the shading strip 5, at least one light-guiding device 9 for guiding light into the vehicle interior space or at least one image display device for displaying image information is arranged.
From the foregoing detailed description, it can be seen that the present invention provides an improved vehicle glazing, or head-up display equipped therewith, that enables good image display with high contrast to opaque obscuration bars. Independent of the angle of incidence of the light, the light can be deflected into the vehicle interior space. Undesirable secondary images may be avoided in some embodiments. The head-up display according to the invention can be produced simply and inexpensively using known production methods.
Showing:
1. vehicle glazing
2. First glass plate
3. Second glass plate
4, 4', 4' ' intermediate layer
5. First shielding strip
6,6' second masking strip
7. Instrument panel
8. Projector apparatus
9. Light guide device
10,10' light
11, 11', 11' ' edge regions
12. Vehicle interior space
13. External environment
14. Covering layer
100. Head-up display
I outer side of the first glass pane 2
II inside the first glass pane 2
III inner side of the second glass plate 3
IV outside of the second glass plate 3
Section line A-A'.

Claims (15)

1. Vehicle glazing (1) for a head-up display (100) having an outer side (I) facing an external environment (13) and an inner side (IV) facing a vehicle interior space in a mounted state, comprising:
-at least one transparent glass plate (2, 3)
-at least one shading strip (5) in an edge region (11) of the glass pane (2, 3),
-at least one light-guiding means (9) for guiding light into the vehicle interior space (12) or at least one image display means for displaying image information, which is arranged in the region of the shading strip (5), on the vehicle interior space side of the shading strip.
2. Vehicle glazing (1) according to claim 1, wherein the light guiding device (9) is a holographic light guiding device having at least one holographic optical element adapted to guide light, designed such that the incoming light (10) is directed in the direction of the vehicle interior space (12).
3. Vehicle glazing (1) according to claim 1, wherein the light guiding means (9) comprises a holographic waveguide designed such that light coupled into the waveguide in the region of the obscuration band (5) is guided towards the vehicle interior space (12).
4. Vehicle glazing (1) according to any of claims 1 to 3, designed in the form of a composite glazing and comprising a first glazing (2) having an outer side (I) and an inner side (II) facing the external environment (13) in the mounted state and a second glazing (3) having an inner side (III) and an outer side (IV) facing the vehicle interior (12) in the mounted state, firmly connected to each other by at least one thermoplastic interlayer (4, 4').
5. Vehicle glazing (1) according to claim 4, wherein the at least one masking strip (5) is applied on the inside of the first glazing panel (2).
6. Vehicle glazing (1) according to claim 4 or 5, wherein the light directing means (9) or the image display means are laminated in two thermoplastic interlayers (4, 4').
7. Vehicle glazing (1) according to claim 4 or 5, wherein the light guiding means (9) or the image display means are disposed on the outer side (IV) of the second glazing panel (3).
8. Vehicle glazing (1) according to claim 7, wherein the light guiding means (9) or the image display means is covered by a covering layer (14), in particular a polymer layer or a vitreous layer.
9. Vehicle glazing (1) according to any of claims 1 to 8, wherein the at least one shading strip (5) is frame-like circumferentially formed and has a larger width, in particular in a portion (11') coinciding with the light guiding device (9) or the image display device, than in a portion (11 ") different therefrom.
10. Vehicle glazing (1) according to any of claims 1 to 9, wherein at least one further shading strip (6, 6') is arranged on the inner side (III) of the second glazing panel (3) and/or on the outer side (IV) of the second glazing panel (3).
11. Head-up display (100) with a vehicle glazing (1) according to any of claims 1 to 10.
12. Head-up display (100) according to claim 11, having a light-guiding device (9) and an image generator (8) assigned to the light-guiding device (9).
13. Vehicle with a head-up display (100) according to claim 11 or 12.
14. Method for manufacturing a vehicle glazing panel (1) according to any of claims 1 to 10, comprising:
(a) In the edge region (11) of at least one glass pane (2, 3), at least one masking strip (5') is applied,
(b) In the region of the shading strip (5), on the vehicle interior space side of the shading strip (5), at least one light-guiding device (9) for guiding light into the vehicle interior space (12) or at least one image display device for displaying image information is arranged.
15. Use of a vehicle glazing panel (1) according to any of claims 1 to 10 in a vehicle for land, air or water traffic, in particular as a vehicle windscreen.
CN202180040359.XA 2020-10-05 2021-10-01 Vehicle glazing for head-up display Pending CN115668036A (en)

Applications Claiming Priority (3)

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EP20200009 2020-10-05
EP20200009.7 2020-10-05
PCT/EP2021/077058 WO2022073860A1 (en) 2020-10-05 2021-10-01 Vehicle pane for a head-up display

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CN117320878A (en) 2022-04-27 2023-12-29 法国圣-戈班玻璃公司 Composite glass pane with reflective layer and hologram element
WO2023227595A1 (en) 2022-05-25 2023-11-30 Saint-Gobain Glass France Composite pane having a reflection element
WO2024052024A1 (en) 2022-09-06 2024-03-14 Saint-Gobain Glass France Display system for a vehicle having two different operating modes
WO2024052010A1 (en) 2022-09-06 2024-03-14 Saint-Gobain Glass France Display system for a vehicle with a restricted angular range
WO2024120938A1 (en) * 2022-12-07 2024-06-13 Agc Glass Europe Glazing pane
DE202023100272U1 (en) 2023-01-20 2023-02-10 Saint-Gobain SEKURIT Deutschland GmbH compound pane

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JPH06279071A (en) 1993-03-26 1994-10-04 Asahi Glass Co Ltd Laminated glass
FR2757151B1 (en) 1996-12-12 1999-01-08 Saint Gobain Vitrage GLAZING COMPRISING A SUBSTRATE PROVIDED WITH A STACK OF THIN FILMS FOR SUN PROTECTION AND / OR THERMAL INSULATION
DE102016211823A1 (en) 2016-06-30 2018-01-04 Robert Bosch Gmbh Deflector for deflecting light on a windshield of a vehicle, windshield, head-up display system and sensor system
KR20200098636A (en) 2017-12-20 2020-08-20 쌩-고벵 글래스 프랑스 Laminated glass system
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