Lidar detection device provided with laminated protective layer

Abstract

The present invention relates to a detection device (1) including (a) a lidar device (21) enclosed in a housing (11) provided with (b) a glass cover (12) having an average transmittance at a light detection and ranging (LIDAR) operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm. According to the invention, the glass cover (12) is a laminated glass cover including at least one glass sheet laminated using at least one thermoplastic interlayer (31), the thermoplastic interlayer having an average transmittance at a LIDAR operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, and an optical transmittance in the visible range of less than 10% of incident light, preferably less than 5% of incident light, more preferably less than 2% of incident light, and even more preferably equal to 0% of incident light.

Description

[Technical Field]

[0001] The present invention relates to the technical field of detection devices suitable for use in automobiles or automobiles that assist drivers, including autonomous vehicles (ADAS = Advanced Driver Assistance Systems). In particular, the present invention relates to a lidar system consisting of a housing and a solid-state lidar device housed in the housing, which has increased service time and better aesthetics. The present invention relates to a laminated glass cover for the housing. When lidars need to be placed around an automobile, in particular on trim elements or behind automobile windows, the visible part of the lidar needs to be aesthetically pleasing, and in particular the glass cover for the housing should be as unobtrusive as possible while ensuring good efficiency in terms of transmittance to infrared (IR) radiation. [Background technology]

[0002] Systems to assist the driver of a vehicle are increasingly being installed in automobiles. These systems are collectively referred to as ADAS (Advanced Driver Assistance Systems). ADAS includes detection systems that can detect, and in some cases identify, obstacles in the immediate surroundings of the vehicle. For example, detection systems include optical or infrared cameras, radar, and LIDAR (Light Detection and Ranging). LIDAR measures the distance between itself and an object in its field of view by calculating the time it takes a light pulse to travel to the object at the speed of light and return to the LIDAR. LIDAR includes an optical emitter (usually a laser light source) and an optical receiver. When the light pulse emitted by the LIDAR's optical emitter hits an irregularly shaped object, the incident optical signal is scattered, and only a portion of the light returns to the optical receiver. U.S. Patent Application Publication No. 20150029487 describes an automobile equipped with a LIDAR-type device.

[0003] Mechanical scanning lidar constitutes a first-generation lidar that uses a powerful collimated laser source and collects the return signal via highly focused optics to a receiver. By rotating the laser and receiver assembly, mechanical scanning lidar can scan the area around the mechanical scanning lidar and collect data over a wide area, up to 360 degrees. However, mechanical scanning lidars are generally large, delicate, and very expensive. Solid-state lidar is a second-generation lidar that does not have the drawbacks of mechanical scanning lidar.

[0004] While mechanical scanning lidar relies on an electromechanical configuration that scans a single laser source over an area around the mechanical scanning lidar, solid-state lidar does not contain any moving parts. Solid-state lidar uses optical phased arrays, in which optical emitters send out bursts of photons in specific patterns and phases to create directional emissions that can be adjusted in focus and size. Optical phased arrays are arrays of emitters (e.g., lasers) that can change the direction of an electromagnetic beam by adjusting the relative phase of the signal from each emitter. Solid-state lidars are built on electronic chips and are therefore significantly cheaper and more resistant to vibration than mechanical scanning lidars. One disadvantage of solid-state lidar compared to mechanical scanning lidars that include a single laser source is that for the same energy consumption, the intensity of the light emitted by the optical phased array is divided by the number of optical emitters. Optical phenomena such as light reflection, absorption, and scattering can be more problematic than with a single laser source.

[0005] Solid-state lidar is increasingly being implemented in automobiles. Solid-state lidar can be mounted on the exterior of a vehicle, a highly aggressive environment subject to rain, hail, large temperature fluctuations, and impacts from various objects, including gravel. To protect the lidar from such an environment, the lidar device is enclosed by a housing that includes a glass cover that is transparent to the wavelengths used by the lidar. Lidar can use visible or infrared light. However, lidar used in the automotive industry typically emits light in the near-infrared spectrum, from 750 nm to 1650 nm. The glass cover according to the present invention is made from at least one glass sheet that has an average transmittance of at least 80%, preferably at least 90%, for infrared light in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, and more preferably 750 nm to 950 nm, at the lidar operating wavelength. Examples of glass covers suitable for use in lidar detection devices are described in U.S. Patent Application Publication No. 20150029487, European Patent Application No. 20170185156, and Patent Application No. PCT / EP2018 / 070954.

[0006] Such glass must, of course, maintain a high transmittance for the light emitted by the light source.

[0007] Additionally, the glass cover may be a prominent feature of the overall design so that the glass cover can aesthetically blend with the overall design.

[0008] Currently, it is known to provide a detection device, particularly a lidar, with a glass cover, at least one surface of which is coated with paint or enamel to achieve the required aesthetics. In the case of a laminated glass cover, where the interlayer is laminated between two glass sheets, the paint or enamel is applied to the inner surface, commonly referred to as P2, of the first glass sheet and / or the inner surface, commonly referred to as P3, of the second glass sheet.

[0009] However, the paint or ink or enamel diffuses into the thermoplastic interlayer during the manufacturing process of the laminated glass cover, causing the glass cover to have an unaesthetic appearance and therefore cannot be effectively used as a cover for a detection device.

[0010] Furthermore, the diffusion of paint or ink or enamel into the thermoplastic interlayer increases the haze of the glass cover, and therefore the image captured by the sensor device may become blurred, which may severely damage the function of the sensor device, especially the lidar.

[0011] Furthermore, if paint, ink, or enamel needs to be applied to the inner surface of the glass sheet in contact with the thermoplastic interlayer, the paint, ink, or enamel must undergo a full cure, which may result in poor adhesion of the thermoplastic interlayer to the glass sheet with the risk of delamination, thereby adversely affecting the mechanical and temporal life of the glass cover.

[0012] For this reason, there is a need to propose a laminated cover that has an aesthetic appearance and meets the requirements of glass covers for lidar devices.

[0013] With the development of ADAS and automobiles that require multiple detection systems, it is unacceptable to have a glass cover that has an unaesthetic appearance and can alter the efficiency of the lidar system.

[0014] The present invention proposes a solution to this problem, enabling an efficient, durable, and aesthetically pleasing lidar system at a lower cost than current systems. These and other advantages are described in more detail in the following sections. Summary of the Invention

[0015] The present invention is defined in the accompanying independent claims. Preferred embodiments are defined in the dependent claims. In particular, the present invention provides: (b) a housing surrounded by a housing having a laminated glass cover secured thereto, the laminated glass cover having an average transmittance at a light detection and ranging (lidar) operating wavelength of at least 80%, preferably at least 90%, for infrared light in the wavelength range of 750 nm to 1650 nm; The present invention relates to a detection device comprising:

[0016] According to the present invention, a laminated glass cover comprises at least one glass sheet laminated using at least one thermoplastic interlayer, which has an average transmittance at a lidar operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, and an optical transmittance in the visible range (380 nm to 780 nm) of less than 10% of the incident light, preferably less than 5% of the incident light, more preferably less than 2% of the incident light, and even more preferably equal to 0% of the incident light.

[0017] According to the present invention, the light transmittance shall be calculated according to the ISO 9050 standard as LT D65 10°.

[0018] According to the present invention, the laminated glass cover has an average transmittance at a lidar operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, more preferably 750 nm to 950 nm.

[0019] According to the present invention, the thermoplastic intermediate layer has an average transmittance at the lidar operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, more preferably 750 nm to 950 nm, and an optical transmittance in the visible range (380 nm to 780 nm) of less than 10% of the incident light, preferably less than 5% of the incident light, more preferably less than 2% of the incident light, even more preferably equal to 0% of the incident light.

[0020] The thermoplastic interlayer according to the present invention provides the laminated glass cover with resistance to many stone chip impacts while maintaining and even improving the aesthetics and efficiency of the lidar system.

[0021] According to an embodiment of the present invention, the thermoplastic interlayer is a black thermoplastic interlayer having a light transmittance in the visible range (380 nm to 780 nm) of less than 10% of the incident light, preferably less than 5% of the incident light, more preferably less than 2% of the incident light, and even more preferably equal to 0% of the incident light.

[0022] In accordance with the present invention, the use of a thermoplastic interlayer as described above allows for the use of curved glass sheets, instead of the use of paint, ink, or enamel on the surface of at least one of the glass sheets forming the laminated glass covering, whereas if paint, ink, or enamel were applied to the surface of the glass sheet, the glass sheet would not be able to be thermally bent without degrading the paint, ink, or enamel.

[0023] The use of a thermoplastic interlayer according to the present invention allows for greater flexibility in curving / flexing the glass sheets that form the laminated glass cover and in applying coatings (e.g., anti-reflective coatings) directly to at least one surface of such glass sheets.

[0024] Thus, thanks to the present invention, the laminated glass covering can be flat or curved.

[0025] Curved laminated glass covers can improve lidar efficiency without adversely affecting light reflection compared to flat lidar covers. In fact, the use of curved laminated glass covers increases the scan angle of the lidar. Furthermore, one advantage of using curved glass covers is that they provide greater design flexibility to lidar and / or vehicle (car, truck, airplane, etc.) manufacturers.

[0026] In a preferred embodiment, the laminated glass cover may include an anti-reflective layer or coating to further increase the transmittance in the wavelengths of interest. The anti-reflective coating may be, for example, a layer based on porous silica with a low refractive index, or may consist of several layers (stacks), in particular layers of dielectric materials, alternating between layers with low and high refractive indexes and ending with a layer with a low refractive index. For example, the anti-reflective coating may be based on a gradient refractive index layer, deposited, for example, by ion implantation techniques. Textured surfaces may also be used. Etching or coating techniques may be used to avoid reflections. Preferably, the reflectivity of the treated surface is reduced by at least 1% within the wavelength range of interest.

[0027] Unless otherwise specified, when the term "infrared" is used, it means radiation with wavelengths between 750 nm and 1650 nm.

[0028] In one embodiment, a laminated glass covering comprises a first glass sheet and a second glass sheet laminated together via a thermoplastic interlayer according to the present invention.

[0029] In another embodiment, the laminated glass cover may include a first glass sheet, a thermoplastic interlayer according to the present invention, and a transparent sheet suitable for use in combination with the first glass sheet and meeting lidar efficiency requirements. The transparent sheet may be, for example, a polycarbonate sheet or a polyethylene terephthalate (PET) film coated with a known scratch-resistant coating. It is understood that any suitable material may be used in combination with at least one glass sheet and a thermoplastic interlayer according to the present invention.

[0030] According to an embodiment of the present invention, the laminated glass cover includes at least one soda-lime glass sheet.

[0031] According to an embodiment of the present invention, the laminated glass cover is made from soda-lime glass, borosilicate glass, aluminosilicate glass, glass ceramic or quartz glass, or any suitable type of glass suitable for use as a glass cover for a lidar according to the present invention.

[0032] According to one embodiment of the present invention, the thermoplastic intermediate layer has a light transmission equal to 0% of the incident light.

[0033] According to another embodiment of the present invention, the thermoplastic interlayer is a bulk dyed interlayer having an infrared (IR) transparent ink, also referred to as an infrared non-absorbing ink.

[0034] According to a preferred embodiment, the thermoplastic interlayer according to the present invention is a black interlayer having an average transmittance at the lidar operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, and an optical transmittance in the visible range of less than 2%, preferably equal to 0% of the incident light. According to an embodiment of the present invention, the thermoplastic interlayer is dyed with an infrared-transparent ink having an average transmittance at the lidar operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, and an optical transmittance in the visible range (380 nm to 780 nm) of less than 10%, preferably less than 5%, more preferably less than 2%, and even more preferably equal to 0% of the incident light.

[0035] Infrared transparent ink allows IR (infrared) rays to pass through the ink, but blocks visible light and, optionally, UV rays (such as sunlight). By changing the formation state of the printed ink layer on the thermoplastic intermediate layer, the transmittance can be adjusted according to the specified wavelength.

[0036] According to one embodiment, the infrared transparent ink is a pigment-based infrared transparent ink or a dye-based infrared transparent ink. Pigment-based inks typically contain solid particles of pigment powder suspended in the ink. In contrast, dye-based inks typically contain a dye dissolved in the ink. The binder or resin of the infrared transparent ink can be any type of polymer (e.g., epoxy, acrylate, polyester, polyurethane, or any mixture thereof). The binder or resin of the infrared transparent ink can be any type known to those skilled in the art. Some non-exhaustive examples of suitable binders are polymers (e.g., epoxy polymers, acrylic polymers, vinyl polymers, polyurethane, polyester, or any mixture thereof). The binder can be based on, for example, vegetable oil or a UV (ultraviolet) or EB (electron beam) curable component. Such inks are commercially available from companies such as Teikoku, Proell, Toray, Nazdar, or Epolin.

[0037] Preferably, the infrared transparent ink is a black ink, the surface of which exhibits a medium dark black color for aesthetic reasons.

[0038] According to the present invention, the thermoplastic intermediate layer can be a polymer sheet comprising polyvinyl butyral (PVB), polyurethane (PU), polycarbonate (PC), polyester, copolymer, ethylene vinyl acetate (EVA), cycloolefin polymer (COP), silicone, polyolefin (PE, PP, etc.), or a mixture thereof.

[0039] In accordance with a preferred embodiment of the present invention, the laminated glass cover is made from two glass sheets laminated together with a thermoplastic interlayer as described above.

[0040] Preferably, the lidar device is mounted on a vehicle. For example, the lidar can be integrated into a fender, bumper, grille, side mirror cover, rearview mirror cover, hood, side door, pillar (A, B, C, D), or on / in a door or roof.

[0041] In another example, the detection device may be located at the rear of the trim element, as described in EP 3487825.

[0042] In another example, the glass cover can be part of a transparent component of an automobile, including the windshield, rear window, side window, headlight, or taillight cover. When a lidar including a laminated glass cover according to the present invention is part of a windshield or, more generally, a window, the lidar should be placed in a zone outside the field of view. The lidar should not be placed in a zone requiring light transmission in the visible range of more than 10% of the incident light.

[0043] Additionally, the present invention relates to the use of a laminated glass cover secured to a housing that encloses a solid-state lidar.

[0044] The present invention further provides a method for manufacturing a laminated glass cover secured to a housing including a lidar, the method comprising: (a) providing at least one glass sheet having an average transmittance at a lidar operating wavelength of at least 80%, preferably at least 90%, for infrared light in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, more preferably 750 nm to 950 nm; (b) laminating at least one glass sheet with a thermoplastic interlayer having an average transmittance at the lidar operating wavelength of at least 80%, preferably at least 90%, for infrared light in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, more preferably 750 nm to 950 nm, and an optical transmittance in the visible range (380 nm to 780 nm) of less than 10% of the incident light, preferably less than 5% of the incident light, more preferably less than 2% of the incident light, even more preferably equal to 0% of the incident light; The present invention relates to a method comprising:

[0045] According to one embodiment of the present invention, a method for manufacturing a laminated glass cover secured to a housing including a lidar includes the steps of: (a) providing at least one glass sheet having an average transmittance at a lidar operating wavelength of at least 80%, preferably at least 90%, for infrared light in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, more preferably 750 nm to 950 nm; (b) disposing on at least one glass sheet a thermoplastic interlayer having an average transmittance at a lidar operating wavelength of at least 80%, preferably at least 90%, for infrared light in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, more preferably 750 nm to 950 nm, and an optical transmittance in the visible range (380 nm to 780 nm) of less than 10% of the incident light, preferably less than 5% of the incident light, more preferably less than 2% of the incident light, and even more preferably equal to 0% of the incident light; (c) placing a second glass sheet having an average transmittance at a lidar operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, more preferably 750 nm to 950 nm, sandwiching a thermoplastic interlayer between the two glass sheets to form a laminated glass cover; Includes.

[0046] A thermoplastic interlayer having an average transmittance at a lidar operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, more preferably 750 nm to 950 nm, and an optical transmittance in the visible range (380 nm to 780 nm) of less than 10% of the incident light, preferably less than 5% of the incident light, more preferably less than 2% of the incident light, even more preferably equal to 0% of the incident light, - Strengthen the glass cover that is fixed to the housing including the rider, and comply with safety standards and regulations. -Better protection for the rider contained in the housing, - Provides excellent aesthetics by at least partially concealing the rider while ensuring excellent rider efficiency It is possible.

[0047] Furthermore, the invention relates to a motor vehicle, preferably an autonomous vehicle, comprising a detection device as described above. [Brief explanation of the drawings]

[0048] For a fuller understanding of the nature of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings. [Figure 1] 1 shows an exploded view of a detection device according to the present invention; [Figure 2] 1 shows a car with various positions where a detection device according to the invention can be installed; DETAILED DESCRIPTION OF THE INVENTION

[0049] 1, the present invention relates to a lidar device including a solid-state lidar device (21) enclosed by a housing (11) provided with a glass cover (12) made from a first glass sheet (13), a thermoplastic interlayer (31), and a second glass sheet (14). According to the present invention, the first glass sheet (13) and the second glass sheet (14) have an average transmittance at the lidar operating wavelength of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, and more preferably 750 nm to 950 nm. The thermoplastic interlayer has an average transmittance of at least 80%, preferably at least 90%, for infrared radiation in the wavelength range of 750 nm to 1650 nm, preferably 750 nm to 1050 nm, and more preferably 750 nm to 950 nm, at the lidar operating wavelength, and an optical transmittance in the visible range (380 nm to 780 nm) of less than 10%, preferably less than 5%, more preferably less than 2%, and even more preferably equal to 0% of the incident light. Such a thermoplastic interlayer is a bulk-dyed PVB interlayer with a black infrared-transparent ink (e.g., provided by Teikoku or Toray) or any known infrared-transparent ink, which has an optical transmittance in the visible range (380 nm to 780 nm) of less than 10%, preferably less than 5%, more preferably less than 2% of the incident light. To protect the lidar from external attack (e.g., impact from debris, gravel, or hail), the lidar must be enclosed by a housing. The present invention proposes a solution that extends the useful life of the lidar system while ensuring lidar efficiency and providing excellent aesthetics. The glass cover is more durable, and the use of a thermoplastic interlayer that is transparent to infrared but has low optical transparency can provide a more efficient glass cover that is fixed to the housing surrounding the lidar with the required optical properties.

[0050] As described above, solid-state LIDAR includes a phased array of optical emitters (lasers) that generate a beam of light waves that can be electronically steered to point in various directions without moving the emitters. Each optical emitter is set in a phase relationship such that the light waves from each emitter add together to increase radiation in desired directions while canceling out to suppress radiation in undesired directions. By controlling the phase shift between the emitters in the phased array, the beam of light waves can be steered in various directions.

[0051] To protect the solid-state lidar from external attack, it is enclosed by a housing that includes a glass cover that allows the passage of emitted radiation and return radiation that is repelled against obstacles.

[0052] Glass Cover(12) The emitted radiation must traverse the glass cover 12 of the housing 11 until it strikes an obstacle and a portion of the radiation is reflected back to the detection device, and the emitted radiation must traverse the glass cover 12 again before reaching the optical sensor. The glass cover 12, which must be traversed by the incident beam and the return beam reflected from the obstacle, must have high transmittance for infrared light, which is often used in lidars mounted on automobiles 40.

[0053] On the other hand, it is important for the good functioning of the lidar detection device 1 that the glass cover 12 has a high transmittance for the wavelengths emitted by lidar, which are generally included in the infrared range of preferably 750 nm to 1650 nm. Maintaining these values ​​during vehicle use, which exposes the glass cover 12 to external attacks including rain, frost, and impacts from hail and gravel, is important for the useful life of the lidar detection device.

[0054] To reduce infrared absorption, the glass sheet should be as thin as possible. The glass sheet should have a thickness of 2 mm or less, preferably 1 mm or less. Preferably, the glass sheet has brittleness while retaining its strength.

[0055] The glass sheet can be a soda-lime glass sheet. An example of the composition of soda-lime glass includes the following components: SiO2 55-85% Al2O30-30% B2O3 0-20% Na2O 0-25% CaO 0-20% MgO 0-15% K2O 0~20% BaO 0-20% Cr2O3 0.0001~0.06% Co 0~1% Total iron (expressed as Fe2O3) 0.002-1%.

[0056] Such glass sheets have extremely high transmittance to infrared radiation used by lidar detection devices in automobiles. The glass cover 12 can also be made of glass. Preferably, the glass cover 12 is made of glass and has a composition within the ranges specified above for the glass sheet.

[0057] According to one embodiment of the present invention, the glass cover can be a coating layer applied to the exterior surface of the glass cover (12) by any known technique (e.g., dip coating, spraying, or sputtering). The coating must be removable with a solvent other than water (due to rain), by a heat treatment that does not adversely affect the glass cover to which the coating is applied, or by mechanically scraping the coating.

[0058] The glass cover (12) can have a three-dimensional (3D) shape.

[0059] Because rain and frost can temporarily degrade the optical properties of the glass cover 12 assembly, the glass cover 12 can be hydrophobic on the outer surface exposed to the atmosphere when covering the glass cover 12. Hydrophobicity can be achieved by selecting a polymer sheet or coating with low surface energy or by applying a hydrophobic layer to the glass cover. A surface is considered hydrophobic if a drop of water placed on the surface forms a static water contact angle of greater than 90 degrees.

[0060] The optical properties of the thermoplastic interlayer according to the present invention do not interfere with the excellent functioning of the lidar detection device based on the transmission of a light beam through the glass cover. However, the primary purpose of the laminated glass cover (12) is to protect the lidar optical sensor. This can be achieved with the mechanical properties described below.

[0061] The detection device according to the invention is particularly suitable for use in motor vehicles, ships, aircraft, etc. Preferably, the detection device according to the invention is fitted to a motor vehicle, more preferably to an autonomous vehicle. Motor vehicles include cars, vans, lorries, motorbikes, buses, trams, trains, etc.

[0062] FIG. 2 shows a typical automobile and also shows an example of the location of the detection device indicated by the boxed reference numeral (1). The detection device can be mounted on / in a body element (41) including a fender, bumper, grille, side mirror cover, hood, boot, side door, pillar (A, B, C, D), or tail door. The detection device can also be mounted on the rear of a transparent body element (42) including a windshield, rear window, side window, headlight or taillight cover, etc. When a lidar including a laminated glass cover according to the present invention is part of a windshield or, more generally, a window, it is understood that the lidar is positioned in a zone outside the field of view. The lidar should not be positioned in a zone requiring light transmission in the visible range of more than 10% of the incident light. [Explanation of symbols]

[0063] 1. Detection Device 11. Housing 12 Glass cover 21 Solid State Lidar 31 Thermoplastic layer 40 Automobiles 41 Opaque body elements 42 Transparent body elements

Claims

1. (d) a detection device (1) including (c) a lidar device (21) surrounded by a housing (11) provided with a glass cover (12) having an average transmittance of at least 80% for infrared radiation in the wavelength range of 750 nm to 1650 nm; the glass cover (12) is a laminated glass cover in which a thermoplastic interlayer (31) is laminated between two glass sheets (13, 14), the thermoplastic interlayer having an average transmittance of at least 80% for infrared radiation in the wavelength range of 750 nm to 1650 nm and an optical transmittance of less than 10% for incident light in the visible range, and the thermoplastic interlayer (31) is a polymer sheet containing polyvinyl butyral, polyurethane, polycarbonate, polyester, ethylene vinyl acetate, cycloolefin polymer, silicone, or polyolefin, and the thermoplastic interlayer is a bulk-dyed interlayer having a black infrared-transparent ink and / or a printed interlayer having a black infrared-transparent ink.

2. 2. The detection device according to claim 1, wherein the glass cover (12) and the at least one thermoplastic intermediate layer (31) have an average transmittance of at least 80% for infrared radiation in the wavelength range of 750 nm to 1050 nm.

3. 3. A detection device according to claim 1 or 2, wherein the at least one thermoplastic intermediate layer (31) has a light transmittance of less than 5% for incident light in the visible range.

4. 4. The detection device according to claim 3, wherein the thermoplastic intermediate layer has a light transmittance equal to 0% for incident light in the visible range.

5. 5. The detection device according to any one of claims 1 to 4, wherein the glass cover (12) is made from soda-lime glass, borosilicate glass, aluminosilicate glass, glass ceramic or quartz glass.

6. The sensing device of any one of claims 1 to 5, wherein the thermoplastic interlayer is a polyvinyl butyral interlayer that is batch dyed or printed with a black infrared transparent ink.

7. The detection device according to any one of claims 1 to 6, wherein the laminated glass cover is curved.

8. 8. The detection device according to any one of claims 1 to 7, wherein the glass cover (12) is integrated on / in an exterior element of a vehicle, such as a fender, a bumper, a grille, a side mirror cover, a side door, a pillar (A, B, C, D) or a door, a vehicle roof, a trim element, etc.

9. The detection device according to any one of claims 1 to 8, wherein the glass cover (12) is part of a transparent component of a motor vehicle, including a windshield, a rear window, a side window, a headlight or a taillight cover.

10. A motor vehicle (40) comprising a detection device according to any one of claims 1 to 9.

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