Pane arrangement comprising an Anti-moisture region

Abstract

The invention relates to a pane arrangement (100) comprising: a pane (1) having an outer surface (I) and an opposing interior-side surface (IV); and at least one radiation source (2) for infrared radiation (3) in the wavelength range from 1.3 µm to 3.5 µm, wherein the radiation source (2) is arranged relative to the pane (1) in such a way that, during operation, it directly irradiates at least a partial region (T) of the pane (1) with infrared radiation (3), or couples the infrared radiation (3) into the pane (1), such that the infrared radiation (3) can be at least partially coupled out in the partial region (T) of the outer surface (I) and / or of the interior-side surface (IV), characterised in that the pane (1) is provided, in the partial region (T), with a hydrophobic coating (4.1, 4.2) on the outer surface (I) and / or the interior-side surface (IV), and in that the infrared radiation (3) emitted by the radiation source (2) is incoherent.

Description

[0001] SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0002] 1

[0003] Disc arrangement with anti-moisture zone

[0004] The invention relates to a disk arrangement with a radiation source for IR radiation and a partial area with a hydrophobic coating.

[0005] One challenge in driving is heating the vehicle's windows to prevent icing or fogging, which impairs visibility. Typically, windows are heated by blowing warm air onto them through inlets. This type of heating is collectively known as Heating, Ventilation and Air Conditioning (HVAC). Besides the enormous energy consumption, the inlets that transport the hot air and blow it onto the window require considerable space. Furthermore, the outlet nozzles must be positioned in a specific geometric relationship to the window, which significantly limits design and construction freedom.

[0006] Electrically heated vehicle windows are well-known. They are used particularly as heated windshields in motor vehicles and offer the possibility of conveniently removing ice or condensation from the windshield by heating it. They have transparent, electrically conductive coatings, especially silver coatings. The coatings are electrically contacted so that an electric current can pass through them. This heats up the coating, which is the basis of the heating effect. For example, see WO2013 / 104438A1.

[0007] One problem with electrically conductive coatings is their often high surface resistance, which, especially with large dimensions of the windshield to be heated or with long current paths, necessitates a high operating voltage—in any case, higher than the usual vehicle electrical system voltages. WO2013 / 104439A1 and EP2803246B1 disclose an electrically conductive coating for heating a windshield, which consists of different layers that can somewhat reduce the surface resistance. Furthermore, the heat loss, and thus energy loss, through convection across the usually large windshield surfaces is also very high.

[0008] However, these special coatings have the disadvantage that they are often opaque to radiation in the IR spectrum, i.e., optical radiation with a wavelength of 780 nm to 1 mm, or exhibit only low transmittance for this radiation. However, SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0009] 2. Sensors for infrared radiation, such as LiDAR (Light Detection and Ranging), are increasingly being used, especially in autonomous vehicles, as they offer advantages over camera-based systems for environmental perception, particularly in low-light conditions (e.g., twilight or darkness). These laser-based systems emit light pulses from a low-power infrared source, which are reflected by objects in the environment and detected by an infrared sensor. The distance to the objects can be determined from the travel time of the light pulse, enabling very precise environmental perception.

[0010] However, modifications to the vehicle windshield are necessary to mount LiDAR systems on its inner surface. Specifically, the coating designed for faster drying or defrosting, which obstructs IR radiation, must be removed, at least in one sensor area of ​​the LiDAR system. This eliminates the advantageously accelerated drying or defrosting of the windshield in the sensor area, necessitating the use of additional heating elements or warm air nozzles to dry this area. The installation space required for these drying or heating systems, however, reduces the available field of view. Furthermore, these systems typically require numerous mechanical and / or electronic components, increasing the vehicle's weight and resulting in higher energy consumption.

[0011] FR960125A and US20110067726A1 show laminated windshields with integrated IR radiation sources. If water droplets or frost are present on the windshield, they can be irradiated by the IR radiation source located inside the vehicle, causing any aqueous film on the windshield to evaporate. A disadvantage of this solution is that it takes a certain amount of time for the water droplets to evaporate in this way. Conversely, faster evaporation requires a higher energy input.

[0012] CN115568043A discloses a dehumidifying device for automotive glass panes based on infrared radiation. W02024083807A1 discloses a heated laminated pane comprising an outer pane and an inner pane bonded together via a thermoplastic interlayer, and at least one heating device, wherein the heating device is a radiation source in the IR wavelength range from A = 1.3 pm to 3.5 pm and such SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0013] 3 is arranged so that IR radiation in the wavelength range of A = 1.3 pm to 3.5 pm is coupled into the outer disk and / or inner disk.

[0014] There is a need for disc assemblies, particularly for the automotive sector, whose discs can be efficiently and quickly cleaned of moisture, at least in a partial area, without high energy consumption. In particular, the disc assembly should be compatible with optical receiving units, such as sensors. The present invention aims to provide a disc assembly that fulfills the aforementioned and other requirements.

[0015] The object of the present invention is achieved according to the invention by a disk arrangement according to claim 1. Preferred embodiments are described in the dependent claims.

[0016] The disc arrangement according to the invention comprises at least one disc with an outer surface and an opposing inner surface. The outer surface and the inner surface are preferably the surfaces of the disc exposed to the environment (external environment or interior). "Outer" means that the surface is intended to face the external environment. "Interior" means that the surface is intended to face the interior. However, the invention is not limited to these terms. Instead of "interior surface," the term "first surface" can also be used, and instead of "outer surface," the term "second surface" can also be used.

[0017] The disc arrangement according to the invention further comprises a radiation source for IR radiation in the wavelength range from 1.3 pm to 3.5 pm, wherein the IR radiation is incoherent. The radiation source is thus designed such that it can emit IR radiation with wavelengths from the entire or from one or more regions of the aforementioned wavelength range. Advantages of incoherent radiation include, for example, that it is emitted at a wider angle, enabling uniform radiation coverage of the disc. Incoherent radiation sources are also often simpler and less expensive to produce than coherent light sources such as lasers. LEDs and incandescent lamps for incoherent radiation are widely available and relatively inexpensive. Incoherent radiation is generally safer for human use because it does not have high energy densities that can damage tissue. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0018] 4. Coherent laser beams, on the other hand, can be dangerous, especially for the eyes.

[0019] Coherent radiation means that the phases of two (or more) electromagnetic waves that constitute the radiation differ by a known constant. Incoherent radiation means that the phase differences of the electromagnetic waves are unknown / random.

[0020] The radiation source is positioned relative to the disk such that, during operation, it directly irradiates at least a portion of the disk with IR radiation. This means that at least the outer surface or the inner surface of the disk is irradiated with IR radiation in that portion. Typically, however, the radiation source is positioned relative to the disk such that the IR radiation propagates through the disk in that portion, so that both the outer and inner surfaces of the disk are affected by the IR radiation in that portion. The radiation source is preferably positioned on the inner side, i.e., facing the inner surface of the disk.

[0021] As an alternative to directly irradiating the disc, the radiation source can also be arranged so that the IR radiation emitted by the radiation source during operation is coupled into the disc. In this case, the radiation source is positioned relative to the disc such that the coupled IR radiation can be coupled out, at least partially, in the area of ​​the outer surface and / or the inner surface.

[0022] The term "coupled IR radiation into the pane" means that at least a significant portion of the IR radiation is coupled into the pane, so that at least the outer surface and / or the inner surface of the pane can be partially cleared of water deposits and / or frost. It is understood that 100% coupling of IR radiation without any radiation losses is never possible. The IR radiation propagates within the pane by utilizing the effect of total internal reflection. When the coupled IR radiation encounters a water-covered area on the pane surface, it is coupled out into the adhering water due to the lower refractive index of water compared to the pane. This results in absorption of the IR radiation and excitation of water molecules in ice crystals and water droplets, causing the ice to melt and the water to evaporate.Energy loss through convection is advantageously largely eliminated. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT.

[0023] 5

[0024] The disc according to the invention, or a component thereof, is thus suitably designed to act as an IR radiation guide. "IR radiation guide" refers to an IR radiation-conducting medium, typically a glass or plastic disc, which is designed such that IR radiation can be coupled into the IR radiation guide by utilizing the effect of total internal reflection, and is also suitable for conducting coupled IR radiation. The principle of radiation conduction by means of total internal reflection is generally known to those skilled in the art and is described in more detail, for example, for visible radiation in W02008 / 047442A1, JP2011086547A, or JP2015043321A.

[0025] The principle of radiation guidance can be illustrated using an optical waveguide with two opposing primary surfaces. Each primary surface of the optical waveguide represents an interface with the adjacent medium. The first primary surface of the optical waveguide is, for example, the interface with a thermoplastic layer. The second primary surface of the optical waveguide is, for example, the interface with the surrounding atmosphere. Typically, the medium adjacent to the second primary surface (for example, the atmosphere of the room) has a different refractive index than the optical waveguide. In the case that the adjacent medium has a different refractive index than the optical waveguide, this results in a critical angle of total internal reflection, which is determined as α. T= arcsin(— ), where ni is the refractive index of the optically denser medium and n2 is the refractive index of the optically less dense medium. In the case of the interface between an optical fiber and air, the refractive index of the optical fiber is m and the refractive index of the air is n2. If IR radiation strikes the interface at an angle of incidence greater than the critical angle, the light is completely reflected (total internal reflection). Therefore, for IR radiation to propagate through the optical fiber, it must strike the surface of the optical fiber at an angle larger than the respective critical angle.

[0026] According to the invention, the pane is provided with a hydrophobic coating, at least in part, on the outer surface of the pane and / or the inner surface of the pane. Preferably, the pane is provided with the hydrophobic coating only in a partial area, and all other areas of the pane are free or substantially free of the hydrophobic coating. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0027] 6

[0028] A major advantage of the invention is the reduced energy consumption achieved through the use of an IR radiation source in conjunction with the hydrophobic coating. The inventors were surprised by the improved and accelerated removal of water from a hydrophobic coating through the application of IR radiation in the area covered by the invention. The hydrophobic coating results in an increased contact angle between the water and the lens surface compared to an uncoated lens surface. Combined with the absorption of IR radiation, this leads to faster water removal, requiring a shorter irradiation time or lower radiation intensity. The hydrophobic treatment also reduces the adhesion of ice to the surface. Furthermore, the coating hinders ice formation on the lens, resulting in a smaller contact area between the ice and the lens.This reduction in contact area also allows the ice melted by IR radiation to easily flow off the glass surface. This flow can be achieved through mechanical forces such as a windshield wiper, but also through indirect mechanical forces caused by wind, gravity, or vibrations. A further advantage is that electrically conductive layers can be omitted in certain areas, thus ensuring that, for example, the functionality of sensors designed to receive electromagnetic radiation is not impaired. Furthermore, eliminating the conductive layers and their associated contact points (combining conductors, ribbon conductors, etc.) improves the glass's stability, particularly during the bending process, and helps prevent glass breakage.

[0029] The disc according to the invention can be a monolithic disc, as is often the case with rear or side windows in vehicles. A monolithic disc is a single pane of glass, which, however, may be provided with further functional coatings such as an IR-reflective coating and / or a Low-E coating (emissivity-reducing coating), particularly outside the scope of the invention. Such coatings are advantageously applied to the inner surface of the vehicle disc. As a monolithic disc, however, it consists of nothing more than a single pane of glass and also lacks a thermoplastic polymer layer. Alternatively, the disc can also be a laminated disc, as is usually the case with windshields. However, the rear window or the side window(s) of a vehicle can also be designed as a laminated disc.If the pane is a composite pane, it comprises at least one inner pane and one outer pane, as well as a thermoplastic SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT. arranged between the inner pane and the outer pane.

[0030] 7

[0031] Intermediate layer. The outer pane has an outer surface facing away from the thermoplastic intermediate layer, which is also the outer surface of the pane (though it may have coatings). The outer pane also has an inner surface facing the thermoplastic intermediate layer. The inner pane has an inner surface facing away from the thermoplastic intermediate layer, which may be coated or uncoated. The coated or uncoated inner surface of the inner pane is also the inner surface of the pane. It is understood that the thermoplastic intermediate layer is arranged across the surface between the inner and outer panes. In other words, the main surfaces of the thermoplastic intermediate layer are essentially parallel to the surfaces of the outer and inner panes.The main area of ​​an element describes the area of ​​the element with the largest extent.

[0032] The disc can have any suitable geometric shape and / or curvature. The disc has a circumferential edge with an edge surface, which preferably comprises a top edge and a bottom edge, as well as two intermediate side edges. If the disc is a vehicle windshield, the top edge is the edge that points upwards when installed in the vehicle. The bottom edge, in this context, is the edge that points downwards when installed in the vehicle. The top edge is often also referred to as the roof edge and the bottom edge as the engine edge.

[0033] The disc according to the invention is preferably designed as a vehicle window, more preferably a windshield, roof window, side window, or rear window. In particular, the disc is designed in the shape of a windshield or a rear window. In this context, the portion of the disc according to the invention is preferably designed to be a camera window. A camera window of a vehicle window serves as a viewing area for cameras or optical sensors such as lidar sensors to receive electromagnetic radiation, such as visible radiation (380 nm to 780 nm), UV radiation (200 nm to 380 nm), or IR radiation (from 780 nm to 1 mm). Ideally, the camera window should be completely free of water and dirt to ensure the proper functioning of vehicle systems such as driver assistance systems, reversing cameras, and / or autonomous driving systems. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0034] 8

[0035] In a preferred embodiment of the invention, the hydrophobic coating is designed such that, upon contact with a water droplet, a contact angle is formed between the water droplet and the surface of the disc coated with the hydrophobic coating, which is greater than 90°, preferably greater than 100°. In this preferred embodiment, the hydrophobic coating is thus a coating in which, upon contact with a water droplet, the contact angle of the water droplet to the surface coated with the hydrophobic coating is greater than 90°, preferably greater than 100°. To measure the contact angle, a droplet shape analysis must be used. For this purpose, a small water droplet with a volume of 0.1 pL to 5 pL, for example 1 pL, is applied to the surface of the disc coated with the hydrophobic coating.A contact angle measuring device, for example a contact angle goniometer, takes an image of the droplet and analyzes its shape and the contact angle between the droplet base and the surface. The measurement is preferably carried out at a relative humidity of 30% to 50%, for example 40%, and a room temperature of 20°C to 25°C, for example 22°C. The contact angle is the angle formed by the tangent at the surface of the droplet, in the immediate vicinity of the surface of the disk, with the surface of the disk. The higher the contact angle, the more hydrophobic the surface. A contact angle of over 90° indicates that the surface is highly water-repellent and the droplet assumes an almost spherical shape. Methods for determining the contact angle of water droplets are generally known to those skilled in the art. Measuring devices for determining the contact angle are commercially available, for example, from the companies Krüss or Lonroy.

[0036] In a preferred first embodiment of the disk arrangement according to the invention, the radiation source is configured to emit IR radiation in the IR wavelength range from 1.8 pm to 3.4 pm, preferably from 1.9 pm to 3.3 pm, and particularly preferably from 1.9 pm to 3.0 pm. It is not necessary for the emission band of the radiation source to completely cover these ranges. However, the emission band should lie (at least partially) within these ranges. The radiation source is expediently connected to a power supply. Absorption and excitation of water molecules, and thus the resulting heating and evaporation, are particularly high in this preferred wavelength range. Advantageously, it has been found that the transmission of glass in the wavelength range from 2.9 pm to 3.1 pm is over 70%, and particularly at approximately 3.0 pm it is approximately 10%.85% is particularly large, allowing the energy to be used efficiently for de-icing and water evaporation. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT.

[0037] 9

[0038] The radiation source is preferably configured, in addition to or as an alternative to the first embodiment, such that it can emit IR radiation in the IR wavelength range from 1.4 pm to 2 pm, preferably from 1.45 pm to 1.95 pm. In this range, the IR radiation is particularly energy-intensive and therefore very suitable for evaporating water. This wavelength range is especially preferred if the radiation source comprises or consists of an LED, since LEDs with IR radiation in higher wavelength ranges above 2 pm are difficult to manufacture and can therefore be very expensive.

[0039] The radiation source preferably comprises an LED, OLED, and / or a halogen lamp with a bandpass filter. Preferably, the radiation source comprises an LED, which can also be referred to as an "IR radiation-emitting diode." In addition to the aforementioned emitters for generating IR radiation, the radiation source can also include a housing in which the emitters for generating IR radiation are mounted. Alternatively, the radiation source can be an LED, OLED, and / or a halogen lamp. In particular, LEDs, OLEDs, and halogen lamps typically emit incoherent radiation, which allows a wider area of ​​the disk to be irradiated.

[0040] The radiation source(s) can be, for example, ribbon-shaped or spot-shaped. Other geometric shapes are also possible. Several individual radiation sources can be arranged side by side with space between them or in a ribbon-like arrangement (close together). In other words, if several spot-shaped LEDs are arranged next to each other, a multi-part, ribbon-shaped radiation source can be created. This allows the number and intensity of the radiation sources to be flexibly adapted to the requirements for heating the disc, for example, with regard to the spatial and geometric conditions and the energy required for efficient heating.

[0041] Regardless of the wavelength range in which the at least one radiation source emits IR radiation, and whether the radiation source comprises or consists of an LED, OLED, and / or a halogen lamp with a bandpass filter of the aforementioned types, a diverging element is preferably arranged between the radiation source and the disk. The diverging element is preferably an optical concave lens (also called a diverging lens), a microlens array, or a holographic lens. The diverging element serves to scatter the IR radiation. Parallel incident IR rays are refracted by the diverging element in such a way that the IR rays are dispersed in space. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0042] 10

[0043] The radiation source is therefore preferably oriented such that the IR radiation it emits is scattered by the scattering element, allowing the IR radiation from the source to irradiate a larger area of ​​the disk's surface. This is particularly advantageous when the radiation source directly irradiates the disk, i.e., when the IR radiation is not to be coupled into the disk.

[0044] The pane, whether a monolithic pane or a laminated pane consisting of the outer and inner panes, is preferably made of transparent glass, particularly soda-lime glass, which is common for window panes. However, the panes can also be made of other types of glass (e.g., borosilicate glass, quartz glass, aluminosilicate glass) or transparent plastics (e.g., polymethyl methacrylate or polycarbonate). The thickness of the at least one pane can vary widely. Preferably, panes with a thickness in the range of 0.8 mm to 5 mm, more preferably from 1.4 mm to 2.5 mm, are used, for example, those with standard thicknesses of 1.6 mm or 2.1 mm. The at least one pane can be tempered, partially tempered, or fully tempered. If at least one of the panes is to be tempered, this can be thermally or chemically tempered.In the context of the invention, "at least one pane" means the inner pane and / or the outer pane if the pane is designed as a composite pane, or the individual pane of the pane if it is designed as a monolithic pane.

[0045] The disc can have any three-dimensional shape. Preferably, the disc has no shadowed areas, so that it, or optionally the outer and inner discs, can be efficiently coated by cathode sputtering. Preferably, the disc is flat or slightly or strongly curved in one or more directions in space.

[0046] In the case that the pane is designed as a laminated pane, the thermoplastic interlayer is preferably designed as at least one thermoplastic composite film and is based on ethylene vinyl acetate (EVA), polyvinyl butyral (PVB), or polyurethane (PU), or mixtures, copolymers, or derivatives thereof, particularly preferably on polyvinyl butyral (PVB), and additionally contains additives known to those skilled in the art, such as plasticizers. Preferably, the thermoplastic film contains at least one plasticizer. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0047] 1 1

[0048] The thermoplastic interlayer can be formed by a single film or by more than one film. The thermoplastic interlayer can be formed by one or more thermoplastic films stacked on top of each other, the thickness of which, after lamination of the layer stack, is preferably between 0.25 mm and 1 mm, typically 0.38 mm or 0.76 mm. The thermoplastic interlayer can also be formed by a film that is colored in certain areas and thus opaque. The interlayer can also be formed by more than one film, with the at least two films extending over different areas of the laminated sheet's surface.

[0049] The thermoplastic interlayer can also be a functional thermoplastic film, in particular a film with acoustic damping properties, an IR-reflecting film, a film that absorbs IR radiation in certain areas, and / or a film that absorbs UV radiation. A film that absorbs IR radiation in certain areas can mean that the film does not absorb IR radiation across the entire surface of the disc and / or that the film only absorbs IR radiation in specific wavelength ranges. It is understood that the thermoplastic film preferably does not absorb IR radiation in the wavelength range of 1.3 pm to 3.5 pm in the portion of the disc that is exposed to the radiation source.

[0050] If something is "based on" a polymeric material, it consists predominantly, i.e., at least 50%, preferably at least 60%, and particularly at least 70%, of this material. It may therefore also contain other materials such as stabilizers or plasticizers.

[0051] In a further preferred embodiment of the invention, the radiation source is arranged relative to the disc such that it directly irradiates the disc during operation, with the majority of the radiation emitted by the radiation source, i.e., more than 50%, striking the inner surface of the disc at an angle of incidence of 85° to 95°. In this context, the radiation source is also located on the inner side. An angle of incidence in this range allows for very high transmission of the IR radiation through the disc, enabling the IR radiation to reach even water deposits on the outer surface of the disc. "Angle of incidence" refers to the angle between the inner surface of the disc and the incident IR radiation. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0052] 12

[0053] In a particularly preferred embodiment of the invention, the disk arrangement further comprises at least one optical receiving unit, which is arranged in relation to a portion of the disk such that radiation passing through the disk, for example, radiation from the IR range (from 780 nm to 1 mm), from the visible spectral range (from 380 nm to 780 nm), and / or the UV range (200 nm to 380 nm), can be at least partially received by the receiving unit. Preferably, the receiving unit is arranged on the interior side; thus, the radiation propagates from the external environment through the disk and then reaches the receiving unit. The disk arrangement can also comprise more than one optical receiving unit, for example, two, three, or more.

[0054] In a preferred embodiment, the optical receiving unit is a camera or a sensor, preferably an IR sensor, and in particular a LiDAR sensor. Preferably, the camera is a rear-view, front-view, and / or side-view camera or a component of a 360° camera. The camera is, for example, suitable for receiving light with a wavelength of 380 nm to 780 nm and / or light in the wavelength range of 780 nm to 1 mm. If the optical receiving unit is a sensor, it is preferably an ultrasonic sensor, radar sensor, infrared sensor, and most preferably a LiDAR sensor.

[0055] In a particularly preferred embodiment of the disk arrangement according to the invention, when using an IR-based sensor as the optical receiving unit, in particular a lidar sensor, the radiation source is selected such that there is a wavelength difference of at least 300 nm, and in particular at least 400 nm, between the sensor radiation and the IR radiation of the radiation source. This advantageously prevents any impairment or interference of the sensor signals by the radiation source.

[0056] In a preferred embodiment of the disc arrangement, at least one moisture detector is also provided, which is arranged such that it can detect water deposits in the partial area on the outer surface and / or on the inner surface. Particularly preferably, the radiation source is functionally connected to the moisture detector, so that automated defrosting or removal of condensed moisture can be used. Additionally, the icing of the disc or the formation of condensate and the associated obstruction of visibility can be prevented. Such a detector is preferably mounted on the disc. The radiation source can be connected to a control system, in particular on-board electronics, and / or to one or more SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0057] 13

[0058] Environmental sensors can be functionally linked and communicate with each other. For example, if the glass assembly is installed in a vehicle, a control unit, functionally linked to the humidity detector, can identify whether moisture is detected by the humidity detector and / or whether the temperature sensor registers a temperature below a freezing threshold during operation or vehicle start-up. Based on the detected humidity level and / or the specified temperature, the control unit can then determine whether conditions are met to automatically switch on the radiation source to heat at least the heated area of ​​the glass and remove condensation. Manual activation of the radiation source can also be provided as an alternative or additional option.

[0059] The glass assembly can alternatively or additionally include further environmental sensor(s) such as one or more rain sensors, temperature sensors, conductivity sensors, and / or various other sensors designed to detect environmental conditions and the state of the glass in relation to the removal of condensation (defogging) and / or frost. During operation, the control system can monitor the status of the environmental sensors and, for example, automatically switch on the radiation source to remove ice or condensation from the glass in a specific area and / or to prevent frost and / or moisture from accumulating on the glass.

[0060] In a preferred embodiment of the invention, the disc has a transmittance of at least 90% for IR radiation in a wavelength range of 1.3 pm to 3.5 pm, at least in a partial area. This largely prevents radiation loss, thus enabling more energy-efficient moisture removal. The transmittance of the disc in the partial area for IR radiation in a wavelength range of 1.3 pm to 3.5 pm can be determined by spectrophotometric investigations according to ISO 9050.

[0061] In a preferred embodiment of the invention, the radiation source is arranged relative to the disk such that the emitted IR radiation is coupled into the disk at least partially, preferably at least 50%. If the disk is a monolithic disk, the disk itself serves as the radiation conductor. If, on the other hand, the disk is a composite disk, then, for example, the outer or inner disk serves as the radiation conductor, depending on whether the IR radiation is to be coupled out at the inner or outer surface of the disk. A second radiation source can, of course, also be provided, such as SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0062] 14 the first radiation source couples IR radiation into the outer disk and the second radiation source couples IR radiation into the inner disk.

[0063] The radiation source can couple the IR radiation into the disk in various ways. For example, the radiation source can be arranged in a recess in the disk, and the IR radiation can be coupled in via the edge surface formed by the recess. More information on how a person skilled in the art can arrange the radiation source within a recess in the disk and how the recess can be designed can be found in W02024083807A1 on page 6, line 34 to page 8, line 7. Alternatively, the radiation source can also couple the IR radiation into the disk via a section of the circumferential edge, wherein the section of the edge is preferably arranged as close as possible to the relevant part of the disk.

[0064] In a further preferred embodiment of the disk arrangement according to the invention, the radiation source is arranged relative to the disk such that the IR radiation is coupled into the disk during operation of the radiation source. The radiation source is arranged on the inner surface or the outer surface of the disk and, during operation, emits the IR radiation at an angle to the surface of the disk such that the IR radiation is at least partially, preferably predominantly, coupled into the disk. For this purpose, it can, for example, be connected to the surface of the disk by means of an angled wedge. The IR radiation thus strikes the disk at an angle suitable for coupling. Alternatively, reflection by means of an IR mirror layer is also possible. The IR mirror layer is preferably arranged on the surface of the disk opposite the surface provided with the radiation source.Positioning the radiation source on one of the main surfaces of the pane offers significant advantages in terms of design freedom, manufacturing, and pane stability. The perimeter edge of vehicle windows is typically unsuitable for coupling radiation through it. Therefore, an additional process step is necessary to achieve this. On the other hand, a recess in the pane reduces its stability. If the pane is a laminated pane, the radiation source is preferably positioned on the inner or outer surface of the pane such that the IR radiation is coupled at least partially, and preferably predominantly, into the outer or inner pane of the laminated pane. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT.

[0065] 15

[0066] In a particularly preferred embodiment of the invention, the hydrophobic coating is applied only to the outer surface or the inner surface of the pane. Preferably, the hydrophobic coating is applied at least to the outer surface, since this surface is intended to come into contact with the external environment. The outer surface thus comes into contact with weather conditions such as rain and snow.

[0067] The hydrophobic coating can be a ceramic coating based on rare earth metal oxides (REOs). Preferably, the hydrophobic coating contains hafnium oxide, zirconium oxide, and / or cerium oxide. The hydrophobic coating preferably consists of hafnium oxide, zirconium oxide, and / or cerium oxide.

[0068] In a preferred embodiment, the hydrophobic coating is based on one or more polymers. Silicon oxide particles, particularly silicon oxide nanoparticles, are especially preferably incorporated into the polymer coating. Such polymer coatings can be produced, for example, using hexamethyldisiloxane. For instance, the hydrophobic coating consists of at least one polymethylsiloxane and silicon oxide particles, particularly silicon oxide nanoparticles, incorporated therein. Polymethylsiloxanes exhibit water-repellent properties and are therefore particularly well-suited for use in the hydrophobic coating.For the purposes of the invention, “polymethylsiloxane” means one or more of the following compounds: polymethylhydrogensiloxane (PMHS), polydimethylsiloxane (PDMS), methylphenylpolysiloxane, trimethylsiloxy end-crosslinked polydimethylsiloxane, aminopropyl-terminated polydimethylsiloxane and / or carboxyl-polydimethylsiloxane.

[0069] In a further preferred embodiment of the invention, the hydrophobic coating contains fluorinated compounds, in particular fluorinated silanes or alkylsilanes. Particularly preferably, the hydrophobic coating contains

[0070] Henicosyl-1,1,2,2-tetrahydrododecyldimethyltris(dimethylaminosilane), Heptadecafluoro-1,1,2,2-tetrahydrodecyltrichlorosilane (FDTS), Nonafluoro-1,1,2,2-tetrahydrohexyltris(dimethylamino)silane, 3,3,3,4,4,5,5,6,6-Nonafluorohexyltrichlorosilane, tridecafluoro-1,1,2,2-tetrahydrooctyltrichlorosilane (FOTS), bis(tridecafluoro-1,1,2,2-tetrahydrooctyl)dimethylsiloxymethylchlorosilane, dodecyltrichlorosilane (DDTS), SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0071] 16

[0072] Dimethyldichlorosilane (DDMS),

[0073] 10-Undecenyltrichlorosilane (V11),

[0074] Pentafluorophenylpropyltrichlorosilane or consists of it or of mixtures thereof.

[0075] In one embodiment, the hydrophobic coating is a hybrid coating containing organic and inorganic compounds.

[0076] The hydrophobic coating can be applied, for example, using the sol-gel process. Such coatings can be produced with particularly high optical quality and a very thin profile. Another advantage of the sol-gel process is its high flexibility as a wet-chemical process, allowing, for example, the simple application of the coating to only parts of the disc surface, such as the area according to the invention.The coating process can proceed as follows, for example: The sol is applied to the inner and / or outer surface of the glass, particularly by wet chemical processes, such as dip coating, spin coating, flow coating, application by rollers or brushes, spray coating, or printing processes, such as pad printing or screen printing. The sol is then condensed. This condensation may include a heat treatment, which can be carried out as a separate process at temperatures up to, for example, 500°C, or as part of a glass bending process, typically at temperatures of 600°C to 700°C.If the precursors have UV-crosslinkable functional groups (e.g., methacrylate, vinyl, or acrylate groups), the condensation can include UV treatment. Alternatively, with suitable precursors (e.g., silicates), the condensation can include IR treatment. Optionally, solvent can be evaporated, for example, at a temperature of up to 120 °C. The application of layers using the sol-gel process is known to those skilled in the art, and further information can be found, for example, in WO2021209201 A1.

[0077] Alternatively, the hydrophobic coating can also be applied by chemical vapor deposition. Preferably, the hydrophobic coating is applied by plasma-enhanced chemical vapor deposition (PECVD), especially under atmospheric pressure (APCVD). The advantage of plasma-enhanced chemical vapor deposition is the SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0078] 17

[0079] The application speed combined with high layer homogeneity is superior to many other methods. In particular, silicon oxide-containing compounds can be applied homogeneously and efficiently to a substrate using this method.

[0080] In a preferred embodiment of the invention, the hydrophobic coating is applied by physical vapor deposition (PVD), particularly preferably by cathode sputtering, and most preferably by magnetic field-assisted cathode sputtering (magnetron sputtering).

[0081] Alternatively, the hydrophobic coating can also be applied to the disc using atomic layer deposition (ALD). In this process, ultrathin layers are created through the cyclic chemical reaction of precursor molecules. A major advantage of the ALD method is the precise control over the layer thickness and composition, resulting in a particularly homogeneous and uniform coating.

[0082] The hydrophobic coating preferably has a layer thickness of 5 nm to 1 pm, particularly preferably 10 nm to 500 nm, and especially 20 nm to 150 nm. These coating thicknesses exhibit a good balance between stability and transparency. The layer thickness of the hydrophobic coating is preferably essentially constant, with a local deviation of no more than 5% from the selected layer thickness.

[0083] The thickness of layers and coatings can be determined, for example, using scanning electron microscopy, interreference microscopy, atomic force microscopy, or light microscopy, depending on the thickness range. For layers in the nanometer range, X-ray reflectometry (XPR) or a scanning electron microscope (SEM) in combination with a focused ion beam (FIB) can also be used to measure the layer thickness. Measurement methods for determining layer thickness are known to those skilled in the art.

[0084] In a preferred embodiment of the invention, the hydrophobic coating on the inner surface and / or the outer surface of the disc is structured in the micrometer range or smaller, preferably in the nanometer range. The hydrophobic structuring is preferably achieved by structures such as dots and / or lines. The structuring is preferably in a range of 1 nm to 100 nm, more preferably 5 nm to 50 nm. For example, the coating has lines with a width in the nanometer range or SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0085] 18

[0086] The hydrophobic coating features dots with a diameter in the nanometer range. It is preferably a biomimetic structured layer. The structuring of the hydrophobic coating thus resembles naturally occurring surface structuring, such as the structuring of lotus leaves. This structuring can be achieved, for example, by laser ablation or chemical etching. Preferably, at least a portion of the disk's surface is structured before the hydrophobic coating is applied, either by laser ablation or chemical etching. After structuring, the hydrophobic coating is then applied to this portion, so that the disk's structuring also affects the hydrophobic coating.

[0087] The hydrophobic coating preferably has a light transmittance of at least 70%, more preferably at least 80%, and most preferably at least 90% (according to ISO 9050:2003). For the purposes of this invention, "transparent" means a light transmittance (according to ISO 9050:2003) of at least 70%, more preferably at least 80%, and more preferably at least 90%. "Semi-transparent" (according to ISO 9050:2003) means a light transmittance of at most 70%, more preferably at most 50%, and at least 30%. "Opaque" means a light transmittance (according to ISO 9050:2003) of less than 30%, more preferably less than 20%, more preferably less than 5%, and more particularly less than 0.1%.

[0088] With regard to the determination of luminous transmittance according to ISO 9050:2003 (see section 3.3 in the standard), the relative spectral distribution of illuminant D65 and / or the relative spectral distribution of illuminant A can be used for the determination (see, for example, ISO 11664-2:2007). In other words, the described luminous transmittance range applies to determination using illuminant A and / or illuminant D65.

[0089] The portion of the glass pane where the hydrophobic coating is applied preferably extends over at least 5% and at most 80% of the pane's surface. More preferably, the portion extends over at least 10% and at most 50% of the pane's surface. In particular, the portion extends over at least 15% and at most 30% of the pane's surface. This has the advantage that the hydrophobic coating is applied only to those areas of the pane where, for example, rapid removal of moisture or ice runoff is important, as is necessary, for instance, in the area of ​​camera windows in vehicle windshields. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0090] 19

[0091] Refractive indices are generally specified within the scope of the present invention with reference to a wavelength of 1500 nm. Methods for determining refractive indices are known to those skilled in the art. The refractive indices specified within the scope of the invention can, for example, be determined by ellipsometry, using commercially available ellipsometers. Unless otherwise specified, the specification of layer thicknesses or thicknesses refers to the geometric thickness of a layer.

[0092] The pane according to the invention preferably has an opaque masking area through which no visibility is possible. This masking area is preferably arranged circumferentially in an edge region of the pane. The masking area surrounds a central transparent viewing area in a frame-like manner. This is particularly common for vehicle windows. The masking area is preferably formed by an opaque element, for example, by an opaque printed overlay. If the pane is a laminated pane, the opaque element can also be formed by an opaque section of the interlayer. However, the masking area is particularly preferably formed by an opaque printed overlay.Such a masking layer is typically formed by an enamel containing glass frits and a black pigment, which is applied using screen printing or digital printing and then fired onto at least one surface of the panes. When applied using digital printing, the enamel is preferably applied to the pane as ink from an inkjet printer. The opaque masking area is preferably applied to the outer surface of the inner pane or the inner surface of the outer pane if the pane is a laminated pane. Alternatively, the opaque masking area is preferably applied to the inner surface of the pane if it is a monolithic pane. The masking area preferably covers the entire bonding area of ​​the pane.

[0093] The various embodiments of the invention can be implemented individually or in any combination. In particular, the aforementioned features can be used not only in the combinations specified, but also in other combinations or on their own, unless they are explicitly described as possible only as alternatives to one another without departing from the scope of the present invention. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0094] 20

[0095] The invention is explained in more detail below with reference to exemplary embodiments, with reference to the accompanying figures. These show, in simplified form and not to scale:

[0096] Figure 1 Top view of the outer surface of a disk of a disk arrangement according to the invention,

[0097] Figure 2 shows the edge region of the disk arrangement from Figure 1 in a cross-sectional view.

[0098] Figure 3 Edge region of an alternative embodiment of the invention

[0099] Disc arrangement in a cross-sectional view,

[0100] Figure 4 Images of ice crystals on an untreated glass surface and

[0101] Glass surface with hydrophobic coating and

[0102] Figure 5 shows an absorption spectrum of water (liquid state).

[0103] Figures 1 and 2 show different aspects of an embodiment of the disc arrangement 100 according to the invention. Figure 1 shows a top view of the disc 1 of the disc arrangement 100. Figure 2 shows a cross-sectional view AA' of an edge region of the disc arrangement 100. The disc arrangement 100 comprises a disc 1, which is designed as a laminated disc. The disc 1 is, for example, a windshield of a vehicle. The disc 1 comprises an outer disc 1.1, an inner disc 1.2, and a thermoplastic intermediate layer 10 arranged between the inner disc 1.2 and the outer disc 1.1. The outer disc 1.1 has an outer surface I and an inner surface II, wherein the outer surface I of the outer disc 1.1 is simultaneously also the outer surface I of the disc 1. The outer surface I of the disc 1, or outer disc 1.1, is exposed to the external environment 8. The inner disc 1.2 has an outer surface III and an inner surface IV, wherein the inner surface IV of the inner pane 1.2 is simultaneously also the inner surface IV of the pane 1. The inner surface IV of the pane 1 or inner pane 1.2 is exposed to the interior 7, for example, a vehicle interior. The thermoplastic interlayer 10 is in direct contact with the inner surface II of the outer pane 1.1 and the outer surface III of the inner pane 1.2. The thermoplastic interlayer 10 is, for example, a PVB-based composite film with a thickness of 0.86 mm. The SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT.

[0104] 21

[0105] For example, the outer pane 1.1 and the inner pane 1.2 are made of soda-lime glass and have a thickness of 2.1 mm.

[0106] The disc 1 has a frame-shaped masking area 11, which is applied in the form of an opaque cover print on the interior surface II of the outer disc 1.1, as is common for vehicle windows.

[0107] The disk arrangement 100 comprises a radiation source 2 for IR radiation 3 with a wavelength range of 1.3 pm to 3.5 pm. The radiation source 2 is oriented such that it directly irradiates the inner surface IV of the disk 1 in a sub-area T, with the IR radiation 3 propagating through the disk 1 and exiting on the outer surface I of the outer disk 1.1. The radiation source 2 is, for example, an LED array with a total radiant power of, for example, 50 W. The IR radiation 3 from the radiation source 2 encounters frost and / or water droplets 5, which cover the outer surface I of the outer disk 1.1 and the inner surface IV of the inner disk 1.2. The water molecules absorb the IR radiation 3 and are thereby heated and evaporate or melt.The hydrophobic coating 4, which is applied to the outer surface I and the inner surface IV of the disk 1 in sub-area T, reduces the contact area of ​​the water 5 with the disk 1, thus allowing melted ice to flow off sub-area T more easily. The hydrophobic coating 4 consists, for example, of FDTS and has a layer thickness of 50 nm on each surface I and IV.

[0108] The radiation source 2 and hydrophobic coating 4 according to the invention enable the pane 1 in the partial area T to be efficiently and quickly cleaned of water and frost 5. In this embodiment, the partial area T serves as a camera window through which an optical receiving unit 6 can monitor the external environment 8. A clear view through the area of ​​the camera window T is essential for the receiving unit 6 to function properly. The optical receiving unit 6 is, for example, a camera for a driver assistance system.

[0109] Figure 3 shows a cross-sectional view of an edge region of an alternative embodiment of a disk arrangement 100 according to the invention. The embodiment of Figure 3 is essentially identical to the embodiment of Figures 1 and 2. Therefore, the following refers to SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT

[0110] 22 only addressed the differences of the embodiment shown in Figure 3 and otherwise referred to the description of Figures 1 and 2.

[0111] In this embodiment, the pane 1 is not designed as a laminated pane, but as a monolithic single pane. The pane 1 is, for example, the rear window of a vehicle and is made of soda-lime glass. The pane 1 has, for example, a thickness of 2.1 mm. The hydrophobic coating 4 in the sub-area T is applied here only to the outer surface I of the pane 1, while the inner surface IV of the pane 1 is free of the hydrophobic coating 4. However, this is merely an optional embodiment of the pane arrangement 100; the coating 4 can just as easily be applied additionally or exclusively to the inner surface IV of the pane 1 in sub-area T.

[0112] The radiation source 2 is located at the circumferential edge of the disk 1 and, during operation, couples IR radiation 3 into the disk 1 via the edge surface. Due to the refractive index differences between the water 5 and the disk 1 or the hydrophobic coating 4, the IR radiation 3 is coupled out at the surfaces containing the water 5 and absorbed by the water 5. The radiation source 2 is located at an edge of the disk 1 that is as close as possible to the area T. The radiation source 2 is functionally connected to a humidity detector 9. The humidity detector 9 monitors the area T of the disk 1 and instructs the radiation source 2 to couple IR radiation 3 into the disk 1 when liquid 5 is present in the area T of the disk 1.

[0113] Figure 4 shows the formation of ice crystals on an untreated glass surface with a contact angle to water of 14.5° (image series C1 to C4) and on a glass surface coated with a hydrophobic layer with a contact angle to water of 107° (image series B1 to B4). Images B1 to B3 show the time-resolved formation of an ice crystal starting from a water droplet nucleus B1 in a top view. B1 shows a small water droplet at the time of application, B2 shows a water crystal enlarged by condensation after 3.87 s, and B3 shows a water crystal enlarged even further by condensation after 12.77 s. B4 shows the water crystal in a side view after 12.77 s. Parallel to this, images C1 to B3 show the time-resolved formation of an ice crystal starting from a water droplet C1 in a top view on the untreated glass surface.C1 shows the water at the time of application, 02 shows a result of condensation SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT.

[0114] Images B3 and C4 show a water crystal enlarged after 2.31 s. C4 shows a water crystal enlarged even further by condensation after 9.67 s. C5 shows the water crystal in a side view after 9.67 s. Images B4 and C4 clearly show that the water crystal on the hydrophobic surface has a significantly smaller contact area than the water crystal on the untreated surface. This smaller contact area accelerates the flow of molten or partially melting ice.

[0115] Figure 5 shows an absorption spectrum of water in the liquid state. The diagram shows that water molecules, for example, exhibit a particularly high absorption coefficient at a wavelength of approximately 3 pm. In a preferred embodiment, the

[0116] The disk arrangement therefore uses a radiation source in the IR wavelength range from A = 2.5 pm to A = 3.3, particularly preferably from A = 2.9 to A = 3.1 pm, since in this preferred wavelength range the absorption and excitation of the water molecules and thus the resulting heating and evaporation are particularly large.

[0117] SAINT-GOBAIN SEKURIT FRANCE 2024361 -WO-PCT

[0118] 24

[0119] Reference symbol list

[0120] 1 pane, composite pane

[0121] 1.1 Outer pane

[0122] 1.2 Inner pane

[0123] 2 radiation source

[0124] 3 IR radiation

[0125] 4 hydrophobic coating

[0126] 5 drops of water

[0127] 6 optical receiving units

[0128] 7 Interior

[0129] 8 external environment

[0130] 9 Humidity detector

[0131] 10 thermoplastic intermediate layer

[0132] 11 Masking area

[0133] B1 Water on hydrophobic surface after 0.00 seconds

[0134] B2 Water crystal on hydrophobic surface after 3.87 seconds

[0135] B3 Water crystal on hydrophobic surface after 12.77 seconds

[0136] B4 Side view of the water crystal on a hydrophobic surface after 12.77 seconds

[0137] C1 Water on untreated surface after 0.00 seconds

[0138] C2 water crystal on untreated surface after 2.31 seconds

[0139] C3 Water crystal on untreated surface after 9.67 seconds

[0140] C4 Side view of the water crystal on an untreated surface after 9.67 seconds

[0141] T sub-area

[0142] I outer surface of the pane 1 / outer pane 1.1

[0143] II Interior surface of the outer pane 1.1

[0144] III outer surface of the inner pane 1.2

[0145] IV Interior surface of the pane 1 / Inner pane 1.2

[0146] AA' Intersection line

Claims

SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT 25 Patent claims 1. Disk arrangement (100) comprising a disk (1) with an outer surface (I) and an opposing inner surface (IV) and at least one radiation source (2) for IR radiation (3) in the wavelength range of 1.3 pm to 3.5 pm, wherein the radiation source (2) is arranged relative to the disk (1) such that, during operation, it directly irradiates at least a partial area (T) of the disk (1) with IR radiation (3) or couples the IR radiation (3) into the disk (1) so that the IR radiation (3) can be coupled out at least partially in the partial area (T) of the outer surface (I) and / or the inner surface (IV), characterized in that the disk (1) is provided with a hydrophobic coating (4) in the partial area (T) on the outer surface (I) and / or the inner surface (IV) and wherein the IR radiation (3) emitted by the radiation source (2) is incoherent.

2. Disc arrangement (100) according to claim 1, wherein the hydrophobic coating (4) is designed such that, upon contact with a water droplet (5), a contact angle of the water droplet (5) to the surface (I, IV) of the disc (1) provided with the hydrophobic coating (4) is formed which is greater than 90°, preferably greater than 100°.

3. Disc arrangement (100) according to claim 1 or 2, wherein the radiation source (2) comprises at least one LED, one OLED and / or one halogen lamp with band filter.

4. Disc arrangement (100) according to one of claims 1 to 3, wherein the radiation source (2) directly irradiates the disc (1) and is arranged such that the emitted IR radiation (3) predominantly strikes the interior surface (IV) of the disc (1) at an angle of incidence of 85° to 95°.

5. Disc arrangement (100) according to one of claims 1 to 4, wherein the radiation source (2) for IR radiation (3) is configured in the wavelength range from 1.8 pm to 3.4 pm, preferably from 1.9 pm to 3 pm. SAI NT-GOBAI N SEKURIT FRANCE 2024361 -WO-PCT 26 6. Disc arrangement (100) according to one of claims 1 to 5, further comprising an optical receiving unit (6) which is arranged on the interior side (7) of the partial area (T) of the disc (1) such that IR radiation (3) passing through the partial area (T) of the disc (1) from the external environment (8) can be received at least partially by the receiving unit (6).

7. Disc arrangement (100) according to claim 6, wherein the optical receiving unit (6) is a camera or an IR sensor, in particular a lidar sensor.

8. Disc arrangement (100) according to one of claims 1 to 7, further comprising a moisture detector (9) which is arranged such that it can detect water (5) in the partial area (T) on the outer surface (I) and / or on the inner surface (IV).

9. Disc arrangement (100) according to one of claims 1 to 8, wherein the hydrophobic coating (4) is applied only to the outer surface (I) or the inner surface (IV) of the disc (1).

10. Disk arrangement (100) according to any one of claims 1 to 9, wherein the disk (1) is a monolithic disk.

11. Disc arrangement (100) according to any one of claims 1 to 9, wherein the disc (1) is a composite disc and comprises an outer disc (1.1), an inner disc (1.2) and a thermoplastic intermediate layer (10) arranged between the outer disc (1.1) and the inner disc (1.2), wherein the outer surface (I) of the disc (1) is simultaneously the outer surface of the outer disc (1.1) facing away from the thermoplastic intermediate layer (10) and the inner surface (IV) of the disc (1) is simultaneously the inner surface of the inner disc (1.2) facing away from the thermoplastic intermediate layer (10).

12. Disc arrangement (100) according to one of claims 1 to 11, wherein the hydrophobic coating (4) contains or consists of fluorinated compounds, in particular fluorinated silanes or alkylsilanes. SAINT-GOBAIN SEKURIT FRANCE 2024361 -WO-PCT 27 13. Disc arrangement (100) according to one of claims 1 to 12, wherein the hydrophobic coating (4) is structured in the micrometer range or smaller, preferably in the nanometer range.

14. Disc arrangement (100) according to any one of claims 1 to 13, wherein the disc (1) has a transmittance of at least 90% for IR radiation (3) in a wavelength range of 1.3 pm to 3.5 pm, at least in the partial region (T).

15. Disc arrangement (100) according to any one of claims 1 to 14, wherein the disc (1) Vehicle window, preferably a windshield or rear window.

Images