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WO2025031757A1 - Ensemble vitre stratifiée ayant une fenêtre de capteur - Google Patents

Ensemble vitre stratifiée ayant une fenêtre de capteur Download PDF

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Publication number
WO2025031757A1
WO2025031757A1 PCT/EP2024/070417 EP2024070417W WO2025031757A1 WO 2025031757 A1 WO2025031757 A1 WO 2025031757A1 EP 2024070417 W EP2024070417 W EP 2024070417W WO 2025031757 A1 WO2025031757 A1 WO 2025031757A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
pane
radiation source
composite pane
composite
Prior art date
Application number
PCT/EP2024/070417
Other languages
German (de)
English (en)
Inventor
Hadi RASTEGAR
Siyamak MEMAR JAVID
Yahya MOTEMANI SHARABIANI
Philippe Letocart
Original Assignee
Saint-Gobain Glass France
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint-Gobain Glass France filed Critical Saint-Gobain Glass France
Publication of WO2025031757A1 publication Critical patent/WO2025031757A1/fr

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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
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of 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
    • B32B17/10165—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
    • B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
    • B32B17/10256—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques
    • B32B17/10266—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques on glass pane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B32B17/1055—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
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10899—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin
    • B32B17/10935—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin as a preformed layer, e.g. formed by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/02—Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4023—Coloured on the layer surface, e.g. ink
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B32B2307/737—Dimensions, e.g. volume or area
    • B32B2307/7375—Linear, e.g. length, distance or width
    • B32B2307/7376—Thickness
    • 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

Definitions

  • the invention relates to a composite pane arrangement with a sensor window, in particular for camera systems and methods for controlling a heating device of the sensor window.
  • Composite panes made of two or more glass or polymer panes are used in vehicles as windshields, rear windows, side windows and roof windows.
  • One or more functional coatings that have infrared-reflecting properties, anti-reflective properties or low-E properties can be arranged on individual sides of the panes.
  • Modern vehicles are increasingly being equipped with sensors, particularly with a variety of driver assistance systems with optical sensors. These include optical cameras, but also radar systems, ultrasonic sensors and Light Detection and Ranging (LiDaR). Sensor systems are placed in motor vehicles behind the windshield in the passenger compartment. They therefore offer a good view of the vehicle's surroundings and can detect dangerous situations and obstacles in traffic in good time. In order to ensure that the driver assistance systems function correctly, the vehicle's surroundings must be recorded as precisely as possible.
  • LiDaR Light Detection and Ranging
  • the sensor system is usually protected from the effects of the weather by appropriate panes of glass.
  • the panes should be as clean and fog-free as possible to ensure that the sensors function. Since fogging and icing significantly affect the transmission of electromagnetic waves, the pane should be cleared of these as quickly as possible. Wiping systems ensure that the pane is cleared of water droplets and protective particles. However, they are useless when icy, so if necessary, the affected pane segment, which serves as the camera's field of view, can be heated up for a short time.
  • EP 1 605 729 A2 discloses an electrically heated pane with a camera window.
  • the camera window is kept free of fog and ice by a heating device.
  • the heating element is laminated into the pane at the position of the camera window, with the heating element being arranged adjacent to a field of view.
  • WO 2022/223198 A1 discloses a composite pane for a head-up display with a heatable sensor area, wherein on both sides of the sensor area there is a to a voltage source is arranged, which is connected to an electrically conductive coating.
  • WO 2013/131700 A1 describes a pane arrangement with an electrically heatable lens hood.
  • the pane arrangement has a pane with a housing on the inside of the pane and a radiation receiver, a radiation source and a lens hood within the housing.
  • the lens hood contains an electrically heatable surface that heats a predetermined area of the pane.
  • the object of the present invention is to provide a composite pane arrangement with a sensor window, which ensures rapid demisting or defrosting of a sensor window.
  • the composite pane arrangement according to the invention with a sensor window comprises at least one outer pane and one inner pane, which are connected to one another over a large area to form a composite pane via at least one thermoplastic intermediate layer, the outer pane comprising a first surface facing away from the intermediate layer and a second surface facing the intermediate layer, and the inner pane comprising a first surface facing the intermediate layer and a second surface facing away from the intermediate layer.
  • the composite pane arrangement further comprises a sensor holding device which is fastened to the second surface of the inner pane and in which at least one sensor of a vehicle driving assistance system is arranged, as well as at least one optically transparent sensor window of the composite pane through which the beam path of the sensor passes.
  • the composite pane arrangement according to the invention further comprises a heating device which has at least one radiation source in the infrared wavelength range (IR range) and is arranged on the sensor holding device.
  • the heating device is intended to dry the sensor window, in other words to free it of moisture and ice.
  • the heating according to the invention i.e. de-icing or the removal of condensed moisture by means of IR radiation can be carried out much faster and more efficiently than via the known heating elements or electrically heated layers.
  • the sensor window dries within a few seconds.
  • the heating device is particularly suitable for composite panes that do not have a large-area heating function.
  • An additional advantage is that there is no need for electrically heated layers, such as silver layers within the sensor window. This leads to a simplified, more cost-effective production of the composite pane.
  • the heating device has at least one radiation source in the IR wavelength range from 0.8 pm to 3.5 pm [micrometers], in particular 1.4 pm to 3 pm.
  • the radiation source can in particular be an IR-LED (IR-emitting diode) that emits radiation with a wavelength (A) of 1450 nm [nanometers], 1950 nm or 2950 nm.
  • A 1450 nm [nanometers], 1950 nm or 2950 nm.
  • a heating device of this type also has the advantage that the sensor window does not have a metallic coating that could hinder the transmission of electromagnetic waves.
  • the manufacture of the composite pane is made much easier because a heating device does not have to be installed between the outer pane and the inner pane.
  • the radiation source is arranged such that radiation emitted by the radiation source strikes the second surface of the inner pane perpendicularly.
  • the radiation source is arranged in a recess in the sensor holder. This eliminates the need for additional soldering of connecting elements to the glass of the inner pane.
  • the radiation source is electrically contacted by one or more supply lines.
  • the heating device has several, in particular two to 40 radiation sources. This allows defrosting or the removal of condensed moisture, i.e. drying of the composite pane in the area of the sensor window, to take place particularly quickly.
  • the radiation source can be in the form of a band or a spot. Several individual radiation sources can also be arranged next to one another, spaced apart, or in the form of a band (close to one another).
  • a multi-part, band-shaped radiation source can be formed. This makes it possible to flexibly adapt the number and intensity of the radiation sources to the requirements needed for drying the respective sensor window, for example with regard to the spatial geometric conditions and the energy required for an efficient effect.
  • the sensor bracket can comprise a base part which has means for fastening the sensor and the radiation source.
  • the base part enables the sensor to be reversibly attached to the inner pane of the composite pane, with the sensor still remaining accessible from the vehicle interior.
  • the base part also comprises a substantially flat surface which extends from the sensor in the direction of the second surface of the inner pane, in particular downwards.
  • the base part also comprises two lateral walls which also extend from the sensor in the direction of the second surface of the inner pane to the sides.
  • the base part comprises a flat surface which extends from the sensor in the direction of the second surface of the inner pane and on which the at least one radiation source is arranged.
  • the base part can have openings, notches, ribs, flocking or structures in order to enable, for example, the passage of connectors such as power cables and/or signal lines which are required for the operation of the sensor and the radiation source.
  • the sensor window is intended for the transmission of electromagnetic radiation for the sensor arranged on the interior side, which is directed at the interior surface of the inner pane in such a way that it can detect the radiation entering the sensor window "from the outside" (i.e. over the outer pane in the direction of the inner pane).
  • a camera, a radar sensor or a LiDaR sensor system or a combination of these can be provided as a sensor, whereby the sensor is a sensor with an external view of the surroundings of the vehicle.
  • the sensor window can also be referred to as a camera window. It preferably takes up less than 10%, particularly preferably less than 5% of the pane surface.
  • the transparent sensor window can be surrounded by an opaque area.
  • the opaque area can be covered by a cover print. which is formed by a printed and fired enamel, in particular on the interior surface of the outer pane and/or the inner pane.
  • the intermediate layer can be opaque, for example by using opaque film sections, or an opaque element can be inserted into the intermediate layer.
  • the sensor window preferably has the shape of a square, a rectangle, a rhombus, a trapezoid, a hexagon, an octagon, a cross, an oval or a circle.
  • the sensor window is designed without a coating.
  • the sensor holder can be arranged in the middle, upper area of the composite pane when the composite pane is installed as the windshield of a vehicle.
  • the sensor holder therefore does not obstruct the view of the driver of a vehicle.
  • a cover can conceal the sensor holder so that the sensor holder is located behind the cover from the inside.
  • the sensor holder can be made of plastic.
  • the outer pane and the inner pane are preferably made of soda-lime glass, which is usual for window panes.
  • the glass pane can also be made of other types of glass (for example borosilicate glass, quartz glass, aluminosilicate glass or clear plastics, preferably rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and/or mixtures thereof).
  • the thickness of the outer pane and the inner pane can vary widely.
  • the panes are preferably in the range of 0.5 mm to 10 mm thick, preferably 1 mm to 5 mm.
  • the size of the panes can vary widely and depends on the size of the use according to the invention.
  • the inner pane and optionally the outer pane have areas of 200 cm 2 to 20 m 2 , which are common in vehicle construction, for example.
  • the thermoplastic intermediate layer comprises at least one layer of a thermoplastic connecting material, which preferably contains or consists of ethylene vinyl acetate (EVA), polyvinyl butyral (PVB) or polyurethane (PU) or mixtures or copolymers or derivatives thereof, particularly preferably PVB.
  • the intermediate layer is typically formed from at least one thermoplastic film.
  • the thickness of the film is preferably 0.3 mm to 2 mm, with the standard thicknesses of 0.36 mm and 0.76 mm being particularly common.
  • the intermediate layer can also comprise several layers of thermoplastic material and can be made, for example, from several polymer films arranged one above the other.
  • the outer pane, the inner pane and the thermoplastic intermediate layer can be clear and colorless, but also tinted or colored.
  • the inner pane and outer pane are laminated together via the intermediate layer, for example using autoclave processes, vacuum bag processes, vacuum ring processes, calender processes, vacuum laminators or combinations thereof.
  • the connection between the outer pane and the inner pane is usually carried out under the influence of heat, vacuum and/or pressure.
  • the composite pane can have any three-dimensional shape.
  • the panes are planar or slightly or strongly curved in one or more directions of space.
  • the inner pane and the outer pane are preferably transparent, in particular for use of the pane as a windshield or rear window of a vehicle or other uses where high light transmission is desired.
  • a pane is understood to be transparent in the sense of the invention if it has a transmission in the visible spectral range of greater than 70%.
  • the transmission can also be much lower, for example greater than 5%.
  • the composite pane can additionally comprise a cover print, in particular made of a dark, preferably black, enamel.
  • the cover print is in particular a peripheral, i.e. frame-like, cover print, which is thus arranged in a peripheral edge region, and/or the cover print that is arranged in an area surrounding the sensor window.
  • the peripheral cover print serves primarily as UV protection for the assembly adhesive of the composite pane.
  • the cover print can be opaque and full-surface.
  • the cover print can also be semi-transparent, at least in sections, for example as a dot grid, stripe grid or checkered grid. Alternatively, the cover print can also have a gradient, for example from an opaque covering to a semi-transparent covering.
  • the cover print is applied to the second surface of the outer pane facing the intermediate layer or to the second surface of the inner pane facing away from the intermediate layer.
  • the composite pane arrangement with sensor window according to the invention serves to separate an interior from an external environment. It comprises the inner pane and outer pane as well as the sensor holder with radiation source.
  • the inner pane refers to the pane which is intended to face the interior of the vehicle in the installed position.
  • the outer pane refers to the pane which is intended to face the external environment of the vehicle in the installed position.
  • the upward-facing edge is referred to as the upper edge (for example, the roof edge in a motor vehicle)
  • the downward-facing edge of the composite pane for example, the engine edge in a motor vehicle
  • the edges running in between are referred to as side edges.
  • the composite pane arrangement can be used in a variety of ways: In the case of a composite pane as a window pane of a vehicle, it can be, for example, a roof pane, in particular a windshield, a rear window or a side window.
  • the composite pane is particularly preferably a front pane, in particular a windshield.
  • the object is further achieved by a method for controlling a heating device of a sensor window in a vehicle by a heating system comprising a composite pane arrangement according to the invention, wherein the radiation source is connected to at least one control device (controller) and/or on-board electronics, wherein the method comprises the following steps:
  • the sensor holding device comprises a base part which has means for fastening the sensor and the radiation source and wherein the radiation source is arranged in the base part such that the radiation emitted by the radiation source strikes the second surface of the inner pane substantially perpendicularly
  • the radiation source can be connected to at least one humidity sensor. This can advantageously be used for automated de-icing or removal of condensed moisture. In addition, It is also possible to prevent the icing of the laminated pane or the formation of condensate and the resulting obstruction of visibility.
  • the object is further achieved by a computer-readable storage medium which contains instructions which cause at least one processor to implement a method according to the invention when the instructions are executed by the at least one processor.
  • the computer-readable storage medium offers similar advantages and technical effects as those described in connection with the composite pane arrangement and the method.
  • a further aspect of the invention comprises the use of the composite pane arrangement according to the invention in means of transport for traffic on land, in the air or on water, in particular in motor vehicles, for example as a windshield.
  • Figure 1 is a plan view of a composite pane arrangement according to the invention with a sensor window
  • Figure 2 is an enlarged view of the sensor window from Figure 1
  • Figure 3 is a cross-sectional view along the section line A-A' from Figure 1.
  • FIG. 1 shows a plan view of an embodiment of a composite pane arrangement 100 according to the invention.
  • the composite pane arrangement 100 comprises a composite pane 10 which is constructed from an outer pane 1, a thermoplastic intermediate layer 3 and an inner pane 2.
  • the thermoplastic intermediate layer 3 is arranged between the outer pane 1 and the inner pane 2.
  • the composite pane 10 is, for example, a windshield of a passenger car.
  • the outer pane 1 faces the outside environment
  • the inner pane 2 faces the vehicle interior 12.
  • the upward-facing edge is referred to as the upper edge O
  • the downward-facing edge of the composite pane is referred to as the lower edge U.
  • the edges running in between are referred to as side edges S.
  • the composite pane 10 has a sensor window 4, which is trapezoidal in the embodiment of a composite pane 10 according to the invention shown in Fig. 1.
  • the outer pane 1 and the inner pane 2 consist, for example, of soda-lime glass.
  • the outer pane 1 has, for example, a thickness of 2.1 mm
  • the inner pane 2 has, for example, a thickness of 1.6 mm.
  • the thermoplastic intermediate layer 3 is, for example, an intermediate layer made of PVB with acoustic damping properties and has a thickness of 0.76 mm.
  • the composite pane 10 has a cover print 9 on a second surface II of the outer pane 1 facing the intermediate layer.
  • the cover print 9 is arranged in a peripheral edge area and in an area surrounding the sensor window 4.
  • the cover print 9 is, for example, a black enamel.
  • the cover print 9 is shown in gray in Figure 1.
  • the cover print 9 can also be applied to the first surface III of the inner pane 2 facing the intermediate layer.
  • the composite pane arrangement 100 further comprises a sensor holding device 5 ( Figure 3) which is fastened to the second surface IV of the inner pane 2 and in which at least one sensor 8 of a vehicle driving assistance system is arranged.
  • the sensor holding device 5 can be designed as a plastic housing which is glued to the second surface IV of the inner pane 2.
  • the sensor 8 can be an optical camera, a radar system, ultraviolet (UV) sensors, an ultrasound sensor and a light detection and ranging (LiDaR) sensor system.
  • the beam path of the sensor 4 can pass through the optically transparent sensor window 4 of the composite pane 10.
  • the composite pane arrangement 100 further comprises a heating device 6 for drying the sensor window 4, which has at least one radiation source 7 (Figure 2) in the infrared wavelength range (IR range) and is arranged on the sensor holding device 5.
  • Figure 2 shows an enlarged view of the sensor window 4 from Figure 1 .
  • the heating device 6 comprises 30 radiation sources 7.
  • the Radiation sources 7 are so-called IR-emitting diodes (IR-LEDs) that emit radiation with a wavelength (A) of 1450 nm [nanometers], 1950 nm or 2950 nm.
  • the individual radiation sources 7 are spaced apart from one another or arranged in a band shape (close to one another). If several spot-shaped IR-LEDs are arranged next to one another, a multi-part, band-shaped radiation source can be formed.
  • Figure 3 shows a cross section through the composite pane arrangement 100 according to Figure 1 along the section line A-A'.
  • the outer pane 1 faces the outside environment
  • the inner pane 2 faces the vehicle interior 12.
  • the first, outside surface of the outer pane 1 is referred to as side I.
  • the second, interior-side surface of the outer pane 1 is referred to as side II.
  • the second surface II of the outer pane 1 faces the intermediate layer.
  • the first outside surface of the inner pane 2 is referred to as side III.
  • the second interior-side surface of the inner pane 2 is referred to as side IV.
  • the second surface IV of the inner pane 2 faces away from the intermediate layer.
  • the first surface III of the inner pane 2 and the second surface II of the outer pane 1 face each other and are connected to each other via the thermoplastic intermediate layer 3.
  • the second surface IV of the inner pane 2 and the first surface I of the outer pane 1 face each other and away from the thermoplastic intermediate layer 3.
  • the sensor holding device 5 can comprise a base part 5.1, which has means for fastening the sensor 8 and the radiation source 7.
  • the base part 5.1 enables a reversible attachment of the sensor 8 to the inner pane 2 of the composite pane 10, wherein the sensor 8 remains accessible from the vehicle interior.
  • the base part 5.1 comprises a substantially flat surface that extends from the sensor in the direction of the second surface IV of the inner pane, in particular downwards.
  • the base part 5.1 comprises two lateral walls that also extend from the sensor in the direction of the second surface IV of the inner pane 2 to the sides.
  • the base part 5.1 comprises the flat surface extending from the sensor 8 in the direction of the second surface IV of the inner pane 2, on which the at least one radiation source 7 is arranged.
  • the base part has openings, notches, ribs, flockings or structures to allow passage of connectors such as power cables and/or signal lines required for operation of the sensor and the radiation source.
  • a flocking can contain fibers, preferably black fibers with a length of up to 1 mm.
  • the radiation source 7 is arranged in a recess in the sensor holding device 5, in particular in the base part 5.1. Because the radiation source 7 in the sensor holding device 5, additional soldering of connecting elements to the glass of the inner pane 2 is unnecessary. This prevents temperature-related stresses in the glass or even glass breakage in the area of the sensor window. By arranging the radiation source 7 in this way, a particularly energy-efficient removal of moisture is achieved.
  • the radiation source 7 is electrically contacted by one or more supply lines within the sensor holding device.
  • the heating device 6 can have several radiation sources 7. This allows the defrosting or drying of the composite pane 10 in the area of the sensor window 4 to take place particularly quickly.
  • the radiation sources 7 can be designed in the shape of a band or a spot.
  • the individual radiation sources 7 are arranged in the base part 5.1 in such a way that the radiation emitted by the respective radiation source 7 strikes the second surface IV of the inner pane 2 essentially perpendicularly. With such an arrangement, the energy efficiency is particularly high, so that the defrosting and evaporation of water begins particularly quickly.
  • the composite pane 10 is a windshield that is installed in the vehicle at an installation angle. Outside the sensor window 4, the composite pane 10 can have an electrically conductive, transparent coating, wherein the electrically conductive, transparent coating can be arranged, in particular essentially over the entire surface, outside the camera window on the first surface III of the inner pane 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

La présente invention concerne un ensemble vitre stratifiée (100) ayant une fenêtre de capteur (4), comprenant au moins : • un dispositif de maintien de capteur (5), qui est fixé à une seconde surface (IV) de la vitre interne (2) et dans lequel au moins un capteur d'un système d'aide à la conduite de véhicule est disposé, • au moins une fenêtre de capteur optiquement transparente (2) de la vitre stratifiée (10), à travers laquelle le trajet de faisceau du capteur (3) passe, et • un dispositif chauffant (6), le dispositif chauffant (6) ayant au moins une source de rayonnement (7) dans la plage de longueurs d'onde infrarouges et étant disposé sur le dispositif de maintien de capteur (5), et la source de rayonnement (7) étant disposée dans un évidement dans le dispositif de maintien de capteur (5).
PCT/EP2024/070417 2023-08-10 2024-07-18 Ensemble vitre stratifiée ayant une fenêtre de capteur WO2025031757A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23190845.0 2023-08-10
EP23190845 2023-08-10

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WO2025031757A1 true WO2025031757A1 (fr) 2025-02-13

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1605729A2 (fr) 2004-04-15 2005-12-14 Pilkington Plc Vitrage chauffée électriquement.
US20110067726A1 (en) * 2009-09-18 2011-03-24 Cochran Don W Narrowband de-icing and ice release system and method
WO2013131700A1 (fr) 2012-03-05 2013-09-12 Saint-Gobain Glass France Agencement de vitre comprenant un écran anti-lumière diffusée à chauffage électrique
WO2022223198A1 (fr) 2021-04-22 2022-10-27 Saint-Gobain Glass France Vitre composite pour un affichage tête haute, comprenant une zone de détection pouvant être chauffée

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1605729A2 (fr) 2004-04-15 2005-12-14 Pilkington Plc Vitrage chauffée électriquement.
US20110067726A1 (en) * 2009-09-18 2011-03-24 Cochran Don W Narrowband de-icing and ice release system and method
WO2013131700A1 (fr) 2012-03-05 2013-09-12 Saint-Gobain Glass France Agencement de vitre comprenant un écran anti-lumière diffusée à chauffage électrique
WO2022223198A1 (fr) 2021-04-22 2022-10-27 Saint-Gobain Glass France Vitre composite pour un affichage tête haute, comprenant une zone de détection pouvant être chauffée

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