WINDOW ARRANGEMENT WITH ELECTRICALLY HEATED DIFFUSER BLIND

Description

[0001] The invention relates to a disc arrangement with an electrically heated scattering aperture for heating an optically transparent disc area by means of radiant heat, a method for its manufacture and its use.

[0002] Many vehicles, aircraft, helicopters, and ships are equipped with various optical sensors. Examples of optical sensors include camera systems such as video cameras, night vision cameras, image intensifiers, and passive infrared detectors like FLIR (Forward Looking Infrared). These camera systems can utilize light in the ultraviolet (UV), visible (VIS), and infrared (IR) wavelength ranges. They enable the precise detection of objects, vehicles, and people, even in poor weather conditions such as darkness and fog. In motor vehicles, these camera systems can be installed behind the windshield in the passenger compartment. This allows for the timely detection of hazardous situations and obstacles in road traffic.

[0003] Other applications for optical sensors include electronic distance measurement (EDM), for example, using laser rangefinders. These systems can determine the distance to other vehicles. Such systems are widely used in military applications, but also offer numerous possibilities in the civilian sector. By measuring the distance to the vehicle ahead, the necessary safety distance can be determined, significantly improving road safety.

[0004] Due to their sensitivity to weather conditions and wind, such sensors must always be protected by appropriate lenses. The sensor can be mounted either inside a vehicle or externally, as with thermal imaging cameras on helicopters. In the latter case, the sensor is mounted on the outside of the helicopter in a swiveling housing. Clean and fog-free lenses are essential in both cases to ensure optimal functioning of the optical sensors.

[0005] The same applies to radiation sources located on the inside of vehicle glazing. Examples of such radiation sources include optical lighting elements, such as a third brake light behind a rear window. These optical lighting elements illuminate an area of ​​the window that, for aesthetic and practical reasons, is not typically heated by heating elements. This is the case, for example, when this area of ​​the window is used for antennas that are not connected to the heating element.

[0006] Condensation and icing impair the functionality of sensors and light sources because they significantly reduce the transmission of electromagnetic radiation. While wiper systems can be used for water droplets and dirt particles, these are generally insufficient for icing. Systems are needed that can heat the lens segment associated with the sensor or light source, at least briefly, as required, thus enabling uninterrupted operation.

[0007] Besides the outer surface of the glass, it is particularly important to keep the inner pane free of condensation. To prevent dirt and dust particles from contaminating the sensor or light source, the sensor or light source and the glass assembly are usually encapsulated. If moisture penetrates this encapsulated space, it can condense on the inside of the glass, especially at cold outside temperatures, and restrict light transmission through the glass.

[0008] DE 101 56 850 A1 discloses a sensor in a vehicle window pane, the lens of which is sealed off from the vehicle interior by a housing. This design prevents the deposition of dust particles on the lens. A particle filter is provided for air exchange.

[0009] DE 10 2004 054 161 A1 discloses an infrared light detection area in a vehicle windshield. The infrared light detection area is surrounded by heating elements that keep it free of ice and condensation by means of heat conduction.

[0010] EP 1 605 729 A2 discloses an electrically heated pane with a camera window. This camera window is kept free of fogging and ice by a heating device. The heating element is laminated into the pane at the position of the camera window. An additional heating element can also be attached to the pane surface. This additional heating element is preferably printed onto the pane surface as a conductive paste.

[0011] US 2011 / 0204037 A1 discloses a heating device for the area of ​​the windshield wiper rest position of windshields. The heating of this area of ​​the windshield is generated by direct contact of the windshield with the heating element or by valves supplying warm air.

[0012] WO 2004 / 020250 A1 discloses a method and a device for attaching a sensor to a vehicle windscreen.

[0013] The subsequently published document EP 2644005 A1 discloses a disc arrangement with an electrically heated scattering aperture and a heating element arranged outside the heated area.

[0014] The object of the invention is to provide an improved lens arrangement with a heated scattering aperture, which makes it possible to heat an area of ​​a lens and can be manufactured simply and cost-effectively from finished, standard lenses without major modifications.

[0015] The object of the present invention is achieved according to the invention by a disc arrangement with an electrically heated scattering light diaphragm according to independent claim 1. Furthermore, the invention comprises a method for its manufacture and its use according to claims 11 and 12. Preferred embodiments are described in the dependent claims.

[0016] The disk arrangement according to the invention comprises at least: a disc with an enclosure on the inside of the disc, a radiation receiver and / or a radiation source which is oriented towards the disc within the enclosure in such a way that a beam path of electromagnetic radiation passes through a predetermined area of ​​the disc, a scattering light diaphragm which is arranged within the enclosure and below the beam path and an electrically heated surface in the scattering light diaphragm for heating the area by thermal radiation.

[0017] When the electrically heated surface is heated, it emits thermal radiation, which in turn heats the designated area of ​​the lens. For this to work, the beam path of the radiation receiver or source must run between the designated area of ​​the lens and the diffusion baffle so that the beam path is not obstructed or restricted.

[0018] The disk arrangement comprises at least one disk and at least one predefined area of ​​the disk. The predefined area must be transparent to the electromagnetic information or signals that are to be received by the radiation receiver or that are to be transmitted through the area by the radiation source. The area can be any part of the disk or an inserted disk segment that exhibits high transmission for the corresponding optical and electromagnetic signals. Within the scope of the invention, the feature "transparent" refers to transparency in the wavelength range relevant to the radiation receiver or the radiation source. For radiation receivers or radiation sources in the visible and / or infrared range, the transmission for wavelengths from 200 nm to 2000 nm is preferably more than 60%, particularly preferably more than 70%, and especially more than 90%.For infrared radiation receivers or sources, the transmission in the wavelength range from 800 nm to 1300 nm is preferably more than 60%, particularly preferably > 70%, and especially > 90%. This range preferably occupies less than 10%, particularly preferably less than 5%, of the disk surface.

[0019] The radiation receiver is, for example, a camera or a light-sensitive sensor capable of detecting infrared, visible, and / or ultraviolet electromagnetic radiation. The radiation receiver preferably includes cameras for visible light with wavelengths from 400 nm to 800 nm and / or infrared light with wavelengths from 800 nm to 1300 nm.

[0020] The radiation source is preferably a light source, for example at least one light bulb or one light-emitting diode, which can emit infrared, visible and / or ultraviolet electromagnetic radiation.

[0021] The enclosure protects the radiation receiver or radiation source from dirt and dust particles, as well as unwanted light exposure. The enclosure is preferably located in the upper part of the disc, preferably no more than 30% of the disc height from the upper and / or lower edge. The enclosure preferably contains a polymer, particularly preferably polybutylene terephthalate, polyamides, polycarbonate, polyurethanes, polybutylene, polypropylene, polyethylene, polyethylene terephthalate, polyvinyl chloride, polystyrene, acrylonitrile butadiene styrene, ethylene vinyl acetate, ethylene vinyl alcohol, polyimides, polyesters, polyketones, polyetheretherketones, and / or polymethyl methacrylate, as well as mixtures, block polymers, and copolymers thereof.

[0022] The pane preferably contains glass and / or polymers, preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass, polymethyl methacrylate, polycarbonate and / or mixtures or composite layers thereof. The pane preferably comprises tempered safety glass (ESG) or laminated safety glass (VSG).

[0023] The specified area preferably has an opaque and / or colored border. The border can be designed as either a border strip or a border area.

[0024] The lens hood has an electrically heated surface. The lens hood is positioned such that the path of the electromagnetic radiation received by the receiver or emitted by the radiation source lies between the lens hood and the lens. This applies particularly to the portion of the path that runs within the housing. The electrically heated surface can be a separate component, for example, attached to the lens hood by gluing, soldering, pressing, or welding. Alternatively, the electrically heated surface can be an integral part of the lens hood material.

[0025] It is particularly advantageous if the designated area and the electrically heated surface run as parallel as possible, so that the heat radiation emanating from the electrically heated surface strikes the area of ​​the disc as perpendicularly as possible. Furthermore, it is advantageous if no other structural elements or parts of the enclosure can shield the heat radiation.

[0026] If the heated surface of the light shield and the predetermined area of ​​the window through which the beam passes are arranged parallel, a very large installation space is required, which, in the case of an arrangement on a vehicle window, protrudes undesirably far into the interior. In an advantageous embodiment of the invention, the angle α between the predetermined area and the light shield is from 5° to 65° and preferably from 10° to 45°. This allows for a flatter arrangement of the light shield on the window.

[0027] In one embodiment, the electrically heated surface of the scattering light visor advantageously has a base area of ​​20 cm² to 300 cm², preferably 20 cm² to 40 cm² for arrangements on a windshield and 100 cm² to 300 cm² for rear windows of vehicles. The base area is preferably trapezoidal, with the larger of the two parallel sides being arranged directly adjacent to the window.

[0028] In an advantageous embodiment of the invention, the heating power of the electrically heated surface is selected such that it has a temperature of 30°C to 90°C, preferably 50°C to 70°C. This typically requires a heating power of 0.5 W / dm² to 10 W / dm². Such a heating power is sufficient to defrost the inside of the window in the specified area under standard automotive engineering conditions using radiant heat.

[0029] In a further advantageous embodiment of the invention, the electrically heated surface has a radiant power of 0.5 W / dm² to 5 W / dm². Such a radiant power is sufficient to defrost the inside of the window in the specified area under standard automotive engineering conditions using radiant heat.

[0030] In a further embodiment of the invention, the lens hood advantageously has a thermal conductivity of more than 80 W / (m K), preferably more than 190 W / (m K), and particularly preferably more than 300 W / (m K). In a further embodiment of the invention, the lens hood advantageously contains or consists of a metal, preferably aluminum, copper, spring bronze, and / or steel. Aluminum lens hoods can, for example, be manufactured as continuous castings in meter lengths. Copper lens hoods are preferably pressed or stamped from solid copper sheets.

[0031] In particular, the stray light baffle is made of aluminum, the surface of which facing the lens has been anodized black. This has the particular advantage that stray light entering the housing from the outside through the lens is not reflected into the radiation receiver and therefore does not cause any interference signals.

[0032] According to the invention, the stray light diaphragm is structured on the surface facing the lens and on the side facing the beam path. The structure is a corrugation or a zigzag or wave-like pattern. This has the particular advantage that stray light is reflected into the radiation receiver as little as possible.

[0033] The lens hood can advantageously include a heatable coating and / or heating wires. The coating or the heating wires preferably contain fluorine-doped tin dioxide (F:SnO₂), tin-doped indium oxide (ITO), silver, copper, tin, gold, aluminum, iron, tungsten, chromium, or alloys thereof, and / or at least one electrically conductive organic polymer. The heatable coating preferably has a thickness of 0.1 µm to 50 µm, particularly preferably 1 µm to 10 µm.

[0034] The lens hood contains a heating element, preferably a heating cartridge, in an area outside the electrically heated surface. Such heating cartridges are particularly cost-effective and easy to manufacture. Due to the high thermal conductivity of the lens hood material, the entire hood is heated.

[0035] This leads to an indirect warming of the heated area and in turn to radiant heating of the area.

[0036] The housing is preferably located in the upper area of ​​the windshield and / or rear window, particularly preferably behind a cover strip, a sun visor and / or a band filter.

[0037] The enclosure preferably contains water-absorbing materials or desiccants, particularly preferably silica gel, CaCl₂, Na₂SO₄, activated carbon, silicates, bentonites, zeolites, and / or mixtures thereof. The desiccants can be incorporated into the surface of the enclosure and / or arranged in open containers within the enclosure. The desiccants are preferably arranged such that air and moisture exchange with the air inside the enclosure is possible, but the materials cannot disperse and are held in place. This can preferably be achieved by enclosing the desiccants in an air- and moisture-permeable polymer film or in a fine-mesh net.

[0038] The invention further comprises a method for manufacturing the disc arrangement according to the invention with an electrically heated scattering aperture, wherein a. the enclosure is attached to the specified area of ​​the disc, b. the radiation receiver and / or the radiation source is arranged in the enclosure, and c. the stray light baffle is arranged in the enclosure, wherein the beam path of the radiation receiver and / or the radiation source runs between the disc and the stray light baffle.

[0039] The invention further comprises the use of the disc arrangement according to the invention in vehicles, ships, aircraft and helicopters, and preferably as a windshield and / or rear window of a vehicle.

[0040] It is understood that the various embodiments can be implemented individually or in any combination. In particular, the features mentioned above and to be explained below can be used not only in the combinations specified, but also in other combinations or on their own, without departing from the scope of the present invention.

[0041] The invention is explained in more detail below with reference to a drawing. The drawing is a schematic representation and not to scale. The drawing does not limit the invention in any way.

[0042] They show: Figure 1 shows a top view of an embodiment of a disk arrangement according to the invention, Figure 2 shows a simplified, schematic representation of a cross-section of the disk arrangement according to the invention. Figure 1Figure 3 shows a cross-section of a section of a further embodiment of the disk arrangement according to the invention, Figure 4 shows a cross-section of a section of an alternative embodiment of the disk arrangement according to the invention. Figure 3 Figure 5 shows a cross-section of a further embodiment example of the disk arrangement according to the invention, Figure 6a shows a flowchart of a preferred embodiment of the method according to the invention, and Figure 6b shows a flowchart of an alternative embodiment of the method according to the invention.

[0043] Figure 1 Figure 1 shows a top view of an embodiment of the disk arrangement 100 according to the invention. A housing 6, a radiation receiver 3a, and a region 2, which is defined by the beam path 5 through the disk 1, are arranged in the upper region of the disk 1. The beam path 5 has an upper edge 5.1 and a lower edge 5.2.

[0044] Figure 2shows a simplified, schematic representation of a cross-section along the section line AA' from Figure 1 The housing 6 is arranged on the inner side II of the pane 1. In the case of a vehicle window, the inner side II is the side of the pane 1 facing the vehicle interior.

[0045] A radiation receiver 3a is arranged within the housing 6 and below the disc 1. The beam path 5 of the radiation receiver 3a extends in a funnel shape from the exit lens of the radiation receiver 3a through the disc 1. The beam path 5 of the viewing area penetrates the disc 1 in a region 2 that lies between the upper edge 5.1 of the beam path 5 and the lower edge 5.2 of the beam path 5. The region 2 must be sufficiently transparent to the electromagnetic radiation 15 of the radiation receiver 3a.

[0046] A stray light shield 4 is arranged below the radiation receiver 3a. The stray light shield 4 extends from the radiation receiver 3a to the disk 1. The stray light shield 4 is arranged outside and, in particular, below the beam path 5 of the radiation receiver 3a in order not to restrict the beam path 5. The stray light shield 4 borders the area 2 of the disk 1 at an angle α of, for example, 30°.

[0047] The lens hood 4 has an electrically heated area 7 on its surface 20. The electrically heated area 7 can be heated indirectly by an electric heating element in another area of ​​the lens hood 4, whereby the electrically heated area 7 is heated by the thermal conductivity of the lens hood material 4.

[0048] The electrically heated surface 7 is arranged opposite area 2 of the pane 1. When the electrically heated surface 7 is heated, it warms area 2 of the pane 1 by thermal radiation 9, thereby clearing it of condensation. For this purpose, it is particularly advantageous if area 2 and the electrically heated surface 7 are as parallel as possible, so that the thermal radiation 9 emanating from the electrically heated surface 7 strikes area 2 of the pane 1 as perpendicularly as possible. However, this would require a very large installation space, which, in the case of an arrangement on a vehicle windshield, would protrude undesirably far into the interior. Therefore, a certain angle α of 5° to 45°, and for example 30°, is preferred.

[0049] Figure 3shows a cross-section through a further embodiment of the disk arrangement 100 according to the invention in the area of ​​an enclosure 6. The cross-section runs along the section line AA' from Figure 1 The housing 6 is arranged on the inner side II of a pane 1 and attached to the pane 1 by bonding it with an acrylate adhesive. The pane 1 is, for example, a windshield of a motor vehicle and, for example, laminated safety glass. The inner side II is the side of the pane 1 facing the vehicle interior. The housing contains, for example, polybutylene terephthalate with a 10% glass fiber content (PBT-GF10) and was manufactured by an injection molding process.

[0050] A radiation receiver 3a is arranged within the housing 6 and below the pane 1. The radiation receiver 3a is, for example, an infrared camera for a night driving assistance system. The radiation receiver 3a detects, in particular, infrared electromagnetic radiation 15 in the wavelength range of 800 to 1100 nm. The field of view of the radiation receiver 3a is oriented for image acquisition of the traffic area in front of the vehicle. The beam path 5 of the field of view extends in a funnel shape from the exit lens of the radiation receiver 3a through the pane 1. The beam path 5 of the field of view penetrates the pane 1 in a region 2. This region 2 must be sufficiently transparent to the infrared electromagnetic radiation 15 of the radiation receiver 3a. The pane 1 has, for example, a transparency of more than 70% for infrared radiation in the wavelength range of 800 nm to 1100 nm in region 2.The radiation receiver 3a is connected via supply lines 13 to an evaluation electronics not shown here.

[0051] A light shield 4 is arranged below the radiation receiver 3a. "Below" in this context means, in the case of a vehicle windshield in its installed state, vertically and closer to the underside of the vehicle. The light shield 4 extends from the radiation receiver 3a to the windshield 1. The light shield 4 is positioned below the beam path 5 of the radiation receiver 3a to avoid obstructing the field of vision. The light shield 4 borders the area 2 of the windshield 1 at an angle α of, for example, 30°.

[0052] The lens hood 4, for example, is made of aluminum with a thermal conductivity of 200 W / (m K). The surface 20 of the lens hood 4, visible from the outside through the lens 1, is black anodized. Furthermore, the surface 20 has a zigzag or wave-like structure 10. This reduces or prevents unwanted reflections of laterally arriving scattered light into the radiation receiver 3a.

[0053] The lens hood 4 has an electrically heated area 7 on its surface 20. In the example shown, the area 7 is heated by an electric heating element 11 on the underside of the lens hood 4. The base area of ​​the electrically heated area 7 of the lens hood 4 is, for example, 35 cm². The electric heating element 11 is, for example, a heating wire or an electrically conductive coating and can be heated by an electric current. The heating element 11 is connected to a voltage source, for example, to the electrical system of a motor vehicle, via leads 12.

[0054] When the electric heating element 11 is heated by an electric current, the electrically heated area 7 of the surface 20 of the lens 4 heats up due to the high thermal conductivity of the lens 4's material. The heated area 7 is suitable for heating area 2 of the lens 1 by thermal radiation 9 and thereby preventing condensation. As investigations by the inventors have shown, a heating power of 6 W / dm² is sufficient to keep the inner surface II of the lens 1 of a motor vehicle free of condensation in area 2 at an outside temperature of 0°C.

[0055] Figure 4 Figure 1 shows a cross-section of an alternative embodiment of the disk arrangement 100 according to the invention. The disk arrangement 100 corresponds to the disk arrangement 100 from Figure 1. Figure 3Instead of the radiation receiver 3a, a radiation source 3b is arranged within the housing 6. The radiation source 3b contains, for example, ten red LEDs and serves as a so-called third brake light on the rear window of a motor vehicle. The housing 6 is arranged, for example, in an upper area of ​​the window 1 that has no printed or other heating elements. The electromagnetic radiation 15 from the radiation source 3b penetrates the window 1 in an area 2. The thermal radiation 9, which originates from the electrically heated surface 7 of the diffuser 4, keeps the area 2 free of condensation. Furthermore, the thermal radiation accelerates the defrosting of the outer surface I of the window 1 above the area 2.

[0056] Figure 5Figure 1 shows a top view of a further embodiment of the disk arrangement 100 according to the invention. An infrared-reflective, low-emissivity coating 16 based on indium tin oxide is applied to the inner surface II of the disk 1. Such infrared-reflective coatings 16 are known, for example, from WO 2011 / 088330 A2. The coating 16 has a transparency of approximately 80% for electromagnetic radiation in the visible range, but absorbs a large proportion of infrared electromagnetic radiation. The coating 16 is removed within the housing 6 and, in particular, in the region 2 of the beam path 5 of the radiation receiver 3a. This removal of the coating allows a large proportion of the infrared radiation 15 to reach the radiation receiver 3a. Due to the housing 6 on the inner surface II of the disk 1, the removed area is hardly visible from the outside, and the aesthetic appearance of the disk 1 is preserved.

[0057] In the illustrated example, the heating element 11 is located in a region 17 of the lens hood 4, away from the lens 1. The heating element 11 is, for example, a cost-effective and easy-to-process heating cartridge that has been pressed into an opening in the aluminum body of the lens hood 4. Due to the good thermal conductivity of aluminum, the heat generated in the heating element 11 is transferred to region 18 and surface 7. The surface 7, thus indirectly heated electrically, heats region 2 of the lens 1 via thermal radiation 9. To protect the radiation receiver 3a from excessively high temperatures, thermal insulation 8 is arranged between the radiation receiver 3a and the lens hood 4. The thermal insulation 8 contains, for example, a polymer and, in particular, the material of the housing 6.

[0058] Figures 6a and 6bEach shows a flowchart of an embodiment of the inventive method for producing the inventive disk arrangement 100.

[0059] The present invention offers several advantages over prior art disk arrangements. In prior art disk arrangements with radiation receivers or radiation sources, the disk is typically heated in the vicinity of the area through which the electromagnetic disk transmits. Since heating conductors should ideally not cross this area, they are arranged at the outer edge. The interior of the area is heated solely by conduction. Because glass is a poor conductor of heat, the area is heated very inhomogeneously and insufficiently. This method of heating the area does not yield satisfactory results.

[0060] In the present invention, area 2 is heated directly by thermal radiation 9. Sufficient heating power is transferred solely by thermal radiation. This allows for a uniform energy input to the area to be heated. At the same time, it is possible to keep the required energy consumption low.

[0061] The electrically heated lens hood 4 can be easily integrated into an existing housing 6 for a camera or a third brake light, replacing, for example, an existing, non-heated lens hood. The lens hood 4 can be powered via the power supply of the camera or brake light.

[0062] It was unexpected and surprising to the person skilled in the art that the transmission of heat radiation in the disc arrangement according to the invention is sufficient to keep the area to be heated free of condensation. Reference symbol list

[0063] 1. Disc 2. Area 3a. Radiation receiver 3b. Radiation source 4. Stray light diaphragm 5. Beam path 5.1. Upper edge of the beam path 5 5.2. Lower edge of the beam path 5 6. Enclosure 7. Heated surface 8. Thermal insulation 9. Thermal radiation 10. Structuring, corrugation 11. Heating element 12. Lead wire to the heating element 7 or to the heating surface 11 13. Lead wire to the radiation receiver 3a or to the radiation source 3b 15. Electromagnetic radiation 16. Coating 17. First area of ​​the stray light diaphragm 4 18. Second area of ​​the stray light diaphragm 4 20. Surface of the stray light diaphragm 4 100. Disc arrangement α Angle between lens 1 and lens hood 4 I Outer side of lens 1 II Inner side of lens 1 III Side of lens hood 4 A-A' Intersection line IIInside of the lens 1 IIISide of the lens hood 4 AA' Section line

Claims

1. A pane arrangement (100) having an electrically heatable baffle plate (4), at least comprising: a pane (1) with an enclosure (6) on the inner side (II) of the pane (1), a radiation receiver (3a) and / or a radiation source (3b), which is / are turned toward the pane (1) within the enclosure (6) such that a beam path (5) of electromagnetic radiation (15) passes through a predefined region (2) of the pane (1), a baffle plate (4), which is arranged within the enclosure (6) and below the beam path (5), and an electrically heatable area (7) in the baffle plate (4) for heating the region (2) through thermal radiation, wherein the baffle plate (4) has, outside the electrically heatable area (7), an electrical heating element (11), preferably a heating cartridge (11), and wherein the electrically heatable area (7) is heatable by thermal conduction through the electrical heating element (11), wherein the baffle plate (4) has a patterning (10) or a zigzag or wave-shaped form on the side (III) turned toward the beam path (5).

2. The pane arrangement (100) according to claim 1, wherein the radiation receiver (3a) contains a camera or a photosensor light-sensitive for infrared, visible, and / or ultraviolet electromagnetic radiation.

3. The pane arrangement (100) according to claim 1, wherein the radiation source (3b) contains an incandescent bulb or a light-emitting diode for infrared, visible, and / or ultraviolet electromagnetic radiation.

4. The pane arrangement (100) according to any one of claims 1 to 3, wherein the baffle plate (4) contains, or is made of, a metal, preferably aluminium, copper, phosphor bronze and / or steel, and particularly preferably black anodised aluminium.

5. The pane arrangement (100) according to any one of claims 1 to 4, wherein the baffle plate (4) has thermal conductivity of more than 80 W / (m K), preferably more than 190 W / (m K) and particularly preferably more than 300 W / (m K).

6. The pane arrangement (100) according to any one of claims 1 to 5, wherein the angle (α) between the region (2) and the electrically heatable area (7) is from 5° to 65°.

7. The pane arrangement (100) according to any one of claims 1 to 6, wherein the region (2) has transparency for electromagnetic radiation (15) of > 60%, preferably > 70%, particularly preferably > 90%.

8. The pane arrangement (100) according to any one of claims 1 to 7, wherein the electrically heatable area (7) has a heating output of 0.5 W / dm2 to 10 W / dm2.

9. The pane arrangement (100) according to any one of claims 1 to 8, wherein the pane (1) contains glass and / or polymers, preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass, polymethyl methacrylate and / or mixtures thereof.

10. The pane arrangement (100) according to any one of claims 1 to 9, wherein the enclosure (6) is arranged in the upper region of the pane (1).

11. A method for manufacturing the pane arrangement (100) having an electrically heatable baffle plate (4) according to any one of claims 1 to 10, wherein a) the enclosure (6) is secured to the region (2) of the pane (1), b) the radiation receiver (3a) and / or the radiation source (3b) is arranged in the enclosure (6) and c) the baffle plate (4) is arranged in the enclosure (6), wherein the beam path (5) of the radiation receiver (3a) and / or the radiation source (3b) extends between the pane (1) and the baffle plate (4).

12. Use of the pane arrangement (100) having an electrically heatable baffle plate (4) according to any one of claims 1 to 10 in vehicles, ships, aeroplanes and helicopters, preferably as a windscreen and / or rear window of a vehicle.