Glass cover for two different optical sensors

Abstract

The invention relates to a cover for a vehicle sensor module. The vehicle sensor module includes at least two different optical sensors, where a first optical sensor operates in a near-infrared wavelength range and a second optical sensor operates in a visible wavelength range. The cover comprises at least a first glass sheet having an absorption coefficient of less than 15 m-1 in the operating wavelength range of the first optical sensor. The cover further includes a first region corresponding to at least a projection of a field of view of the first optical sensor on the cover and a second region different from the first region corresponding to at least a projection of a field of view of the second optical sensor on the cover. The first region is transparent over an operating wavelength range of the first optical sensor and the second region is transparent over an operating wavelength range of the second optical sensor.

Description

Technical Field

[0001] The present invention relates to the field of sensor covers, and more particularly to a glass cover suitable for two different optical sensors. Background Art

[0002] The current trend is to equip vehicles with an increasing number of sensors. Vehicle manufacturers have an increasing need to combine such sensors, which means integrating at least two different sensors into a single housing, such as a combination of radar and lidar, a combination of lidar and camera, a combination of lidar and infrared camera, etc. Although these sensors are becoming increasingly important, especially for partial or fully automated driving, the trend is to hide such sensors for aesthetic purposes. Even if such sensors can be placed on the vehicle body (which means the sensors protrude from the vehicle), such a combination is not aesthetically pleasing to vehicle manufacturers. The trend is to integrate such sensors within the vehicle body, such as behind the vehicle window (as described in WO 2018178284) or behind the vehicle's exterior decorative elements (as described in WO2018178286).

[0003] However, combining sensors (each sensor operating within a specific wavelength range) means that a single cover in front of the two sensors must be compatible with the two optical sensors. Therefore, there is a need for a cover that is compatible with optical sensors operating within different wavelength ranges. Summary of the Invention

[0004] The present invention relates to a cover for a vehicle sensor module. The vehicle sensor module includes at least two different optical sensors, wherein a first optical sensor having a first field of view operates within the near-infrared wavelength range, and a second optical sensor having a second field of view operates within the visible light wavelength range. The cover includes at least a first glass sheet, the absorption coefficient of the first glass sheet within the operating wavelength range of the first optical sensor being less than 15m -1 , and at least the first glass sheet includes an inner face facing the at least two different optical sensors and an outer face opposite to the inner face. The cover further includes a first zone and a second zone different from the first zone, the first zone at least corresponding to the projection of the first field of view on the cover, and the second zone at least corresponding to the projection of the second field of view on the cover. The first zone is transparent within the operating wavelength range of the first optical sensor, and the second zone is transparent within the operating wavelength range of the second optical sensor. Description of the Drawings

[0005] The present invention will now be further described by way of example and with reference to the accompanying drawings, in which like reference numerals denote like elements in the various figures. These examples are provided by way of illustration and not limitation. The drawings are schematic and not to true scale. For ease of understanding, the different elements of the drawings are shown separately. These drawings do not limit the present invention in any way. Further advantages will be illustrated by way of example.

[0006] Figure 1 The main elements to be used in the description are shown.

[0007] Figures 2a to 2d An alternative embodiment of the present invention using ink is shown.

[0008] Figure 3 Another alternative embodiment of the present invention also using ink is shown.

[0009] Figure 4 Another alternative embodiment of the present invention using a film is shown.

[0010] Figure 5 Another alternative embodiment of the present invention using a sandwich with inserts is shown.

[0011] Figure 6 Another alternative embodiment of the present invention using a film with inserts is shown.

[0012] Figure 7 Another alternative embodiment of the present invention using a film with ink is shown. Detailed Description

[0013] The present invention will be described with respect to specific embodiments and with reference to certain of the drawings, but the present invention is not limited thereto and is only limited by the claims.

[0014] Although some embodiments described herein include some features but not other features included in other embodiments, the combination of features of different embodiments is intended to be within the scope of the present invention and forms different embodiments, as will be understood by those skilled in the art. For example, in the appended claims, any of the claimed embodiments can be used in any combination.

[0015] The present invention provides a cover for a vehicle sensor module. Vehicles include cars, vans, trucks, motorcycles, buses, trams, trains, drones, airplanes, helicopters, and so on.

[0016] The vehicle sensor module includes at least two different optical sensors. The first optical sensor has a first field of view. The first optical sensor operates in the near-infrared wavelength range. A near-infrared sensor is a sensor whose operating wavelength range lies within the near-infrared wavelength range (i.e., between 780 nm and 1650 nm). It includes lidar and a near-infrared camera. Lidar (light detection and ranging) is an abbreviation for "light detection and ranging". Lidar is sometimes also referred to as "laser scanning" or "3D scanning". This technology uses laser beams to form a 3D representation of the surveyed environment. The operating wavelength of the lidar compatible with the present invention is between 780 nm and 1650 nm (commonly referred to as near-infrared). More specifically, the known operating wavelengths of the currently produced lidar compatible with the present invention are 850 nm, 905 nm, 940 nm, 1064 nm, 1310 nm, 1350 nm, 1550 nm, 1650 nm. An acceptable variation of 25 nm around the nominal value of the wavelength can be considered, such that, for example, a wavelength range of 1525 nm to 1575 nm around the nominal value of 1550 nm can be accepted.

[0017] The second optical sensor has a second field of view. The second optical sensor operates in the visible light wavelength range. The visible light wavelength range is defined as from 380 nm to 780 nm.

[0018] The cover includes at least a first glass sheet, and the absorption coefficient of the first glass sheet in the operating wavelength range of the first optical sensor is less than 15 m -1 . The first glass sheet includes an inner face facing the at least two different optical sensors and an outer face opposite to the inner face.

[0019] To quantify the low absorption of the glass sheet in the near-infrared range, in this specification, the absorption coefficient in the wavelength range from 780 nm to 1650 nm is used. The absorption coefficient is defined by the ratio between the absorption rate in a given environment and the optical path length through which the electromagnetic radiation passes. The absorption coefficient is expressed in m -1 . Thus, the absorption coefficient is independent of the thickness of the material, but the absorption coefficient is a function of the wavelength of the absorbed radiation and the chemical properties of the material.

[0020] In the case of glass, the absorption coefficient (μ) at a selected wavelength λ can be calculated from the measured value of the transmittance (T) and the refractive index n of the material (thick = thickness), and the values of n, ρ, and T are functions of the selected wavelength λ:

[0021]

[0022] where ρ = (n - 1) 2 / (n + 1) 2。

[0023] According to the present invention, the absorption coefficient at the operating wavelength of the near-infrared sensor is less than 15 m -1 , preferably less than 10 m -1 , even more preferably less than 5 m -1 The glass sheet can be soda-lime-silica glass, aluminosilicate glass, borosilicate glass, etc.

[0024] Preferably, the glass composition compatible with the present invention includes the following components in terms of the total content expressed as a weight percentage of the glass:

[0025]

[0026] More preferably, the glass composition compatible with the present invention includes the following components in terms of the content expressed as a weight percentage of the total glass:

[0027]

[0028] More preferably, for reasons of lower production cost, the glass compatible with the present invention is made of soda-lime glass. The glass composition compatible with the present invention includes the following components in terms of the content expressed as a weight percentage of the total glass:

[0029]

[0030]

[0031] In addition to its basic composition, the glass can include other components, and their properties and amounts are adapted according to the desired effects. The solution to obtain a glass that is very transparent in the near-infrared with a weak or no effect on its aesthetics or color is to combine a low iron content and optionally a specific chromium content range in the glass composition. Therefore, the glass preferably has the following composition, which includes the following components in terms of the content expressed as a weight percentage of the total glass:

[0032] Total iron (expressed as Fe2O3) 0.002% - 0.06%

[0033] Cr2O3 0% - 0.06%.

[0034] Such glass compositions that combine low levels of iron and chromium exhibit particularly good performance in near-infrared reflection and show high transparency and somewhat remarkable color in the visible light, similar to the glass known as "ultra-clear". These compositions are described in International Applications WO 2014128016A1, WO 2014180679A1, WO 2015011040A1, WO2015011041A1, WO 2015011042A1, WO 2015011043A1 and WO 2015011044A1.

[0035] The cover includes a first region that at least corresponds to the projection of the first field of view on the cover. The cover further includes a second region different from the first region, and the second region at least corresponds to the projection of the second field of view on the cover. The first region is transparent within the operating wavelength range of the first optical sensor. Being transparent in the case of the operating wavelength range of the first optical sensor means a transmittance of at least 85%. The second region is transparent within the operating wavelength range of the second optical sensor. Being transparent in the case of the operating wavelength range of the second optical sensor means a transmittance of at least 70%. Being opaque in the case of the operating wavelength range of the second optical sensor means a transmittance of at most 10%.

[0036] According to a specific embodiment, the cover further includes a second glass sheet, and the absorption coefficient of the second glass sheet within the operating wavelength range of the first optical sensor is also less than 15m -1 . The second glass sheet includes an inner surface facing the at least two different optical sensors and an outer surface opposite to the inner surface. The cover further includes an interlayer that laminates the inner surface of the first glass sheet and the outer surface of the second glass sheet. The interlayer is transparent within the operating wavelength ranges of both the first optical sensor and the second optical sensor.

[0037] According to a specific embodiment, an ink that is transparent within the operating wavelength range of the first optical sensor and opaque within the operating wavelength range of the second optical sensor is integrally applied to the inner surface of the first glass sheet, avoiding the second region of the cover. In the presence of the second glass sheet, the ink can be integrally applied to the inner surface or the outer surface of the second glass sheet, or applied to the interlayer that laminates the first glass sheet and the second glass sheet, in each case avoiding the second region of the cover. In the case of applying the ink to the interlayer, the application can be carried out with a mask provided on the second region of the cover, so that the second region of the cover is free of ink. In other cases, the ink can be integrally applied to the interlayer, and the portion of the interlayer corresponding to the second region can be cut off and replaced with an insert that is transparent within the operating wavelength range of the second optical sensor.

[0038] According to a particular embodiment, a thin film that is transparent within the operating wavelength range of the first optical sensor and opaque within the operating wavelength range of the second optical sensor is integrally applied to the inner face of the first glass sheet, avoiding the second region of the lid. In the presence of the second glass sheet, the thin film may be integrally applied to the inner face or the outer face of the second glass sheet, or applied to the interlayer laminating the first glass sheet and the second glass sheet, in each case avoiding the second region of the lid.

[0039] According to a particular embodiment, the lid further includes a second glass sheet having an absorption coefficient of less than 15 m within the operating wavelength range of the first optical sensor -1 . The second glass sheet includes an inner face facing the at least two different optical sensors and an outer face opposite the inner face. The lid further includes an interlayer laminating the inner face of the first glass sheet and the outer face of the second glass sheet. The interlayer is transparent within the operating wavelength range of the first optical sensor. The interlayer is replaced with an insert in the second region, and the insert is transparent within the operating wavelength range of the second optical sensor.

[0040] According to a particular embodiment, the lid further includes a second glass sheet having an absorption coefficient of less than 15 m within the operating wavelength range of the first optical sensor -1 . The second glass sheet includes an inner face facing the at least two different optical sensors and an outer face opposite the inner face. The lid further includes a thin film that is transparent within the operating wavelength range of the first optical sensor and opaque within the operating wavelength range of the second optical sensor. The thin film is replaced with an insert in the second region, and the insert is transparent within the operating wavelength range of the second optical sensor. The lid further includes: a first interlayer laminating the inner face of the first glass sheet and the thin film; and a second interlayer laminating the outer face of the second glass sheet and the thin film, and both the first interlayer and the second interlayer are transparent within the operating wavelength ranges of both the first optical sensor and the second optical sensor.

[0041] According to a particular embodiment, the lid further includes a second glass sheet having an absorption coefficient of less than 15 m within the operating wavelength range of the first optical sensor -1。The second glass sheet includes an inner face facing the at least two different optical sensors and an outer face opposite the inner face. The cover further includes a thin film that is transparent within the operating wavelength ranges of the first and second optical sensors. Except for a second zone of the cover, the thin film is covered with ink. The ink is transparent within the operating wavelength range of the first optical sensor and opaque within the operating wavelength range of the second optical sensor. The cover further includes: a first interlayer laminating the inner face of the first glass sheet and the thin film; and a second interlayer laminating the outer face of the second glass sheet and the thin film, both the first interlayer and the second interlayer being transparent within the operating wavelength ranges of both the first and second optical sensors.

[0042] In a particular embodiment, the first optical sensor is a lidar or a near-infrared camera.

[0043] In a particular embodiment, the second optical sensor is a camera.

[0044] In a particular embodiment, the absorption coefficient of the first glass sheet (and, where a second glass sheet is present, the second glass sheet as well) within the operating wavelength range of the second optical sensor is less than 10 m -1 , more preferably less than 5 m -1 .

[0045] In a particular embodiment, the inner face and / or the outer face of the first glass sheet, and / or the inner face of the second glass sheet (where a second glass sheet is present) is coated with an anti-reflection coating. Such an anti-reflection coating allows for a reduction in reflection and thus an increase in the signal sent to and / or received from the near-infrared sensor. By way of example, the anti-reflection coating can be, for example, a porous-silicon-based layer with a low refractive index or the anti-reflection layer can be composed of a stack of several layers, in particular alternating layers of a low-refractive-index dielectric material and a high-refractive-index dielectric material and terminated with a low-refractive-index layer. Textured glass sheets can also be used. Etching or coating techniques can also be used to avoid reflection. Preferably, if both surfaces are coated, the reflectivity of the treated surfaces will be reduced by at least 1%, preferably at least 2%, within the wavelength range of interest. The anti-reflection layer can be a layer based on, for example, a refractive-index gradient layer deposited by ion implantation techniques.

[0046] In a particular embodiment, the outer face of the first glass sheet is coated with a waterproof coating. The glass cover can be coated with a hydrophobic layer that prevents water droplets from accumulating on the glass cover. Such a coating allows for ensuring correct sensor operation in the case of rain (snow, frost) and / or in the case of fog. Such a waterproof coating can be composed, for example, of a thin molecular layer of a fluoropolymer, which reduces the surface energy and provides self-cleaning, anti-fouling properties, improved moisture resistance, and other effects.

[0047] Other suitable and advantageous functions can be added to the glass sheet of the cover of the present invention, in particular to provide auxiliary functions to further enhance the good operation of the near-infrared sensor. These auxiliary functions can be, for example: integrated detection functions for breakage, dirt, stains, rain, etc.; or additional protective layers for preventing scratches, glare, stains, dirt, painting, etc. Special filters can also be integrated for polarization, phase or spectral discrimination.

[0048] In a particular embodiment, the cover further includes a silver print or a conductive coating. The cover can be coupled to a heating system that quickly defrosts or demists the cover when external operating conditions are adverse. This heating system can be composed of a wire network, a conductive patch or, alternatively, a silver print network directly applied on the glass surface when an appropriate power source can be applied. Optionally, the system can also include a temperature sensor for dynamically triggering the heating function when needed.

[0049] In a particular embodiment, the cover is part of a vehicle's windshield, rear window, side window or exterior decorative element. Exterior decorative elements include bumpers, window / door seals, pillars, wheel wells, wheel arches, fenders, headlights, mirror bodies and roof caps. Such exterior decorative elements can also be deployable, which means they can only extend from the vehicle when needed. Vehicle manufacturers use these exterior decorative elements to increase aesthetics, enhance functionality and make vehicle design more flexible.

[0050] Reference Figure 1 , shows a cover (1) that is located in front of a first optical sensor (10) having a first field of view (11) and a second optical sensor (20) having a second field of view (21). The cover includes a first glass sheet (100) that has an inner face (102) facing the sensors (10, 20) and an outer face (101) opposite to the inner face (102). The cover further includes a second glass sheet (200) that has an inner face (204) facing the sensors (10, 20) and an outer face (203) opposite to the inner face (204). The first glass sheet and the second glass sheet (100, 200) are laminated together by an interlayer (300). Thus, the cover (1) in this figure is a laminated cover (1), which means the cover (1) is made of at least two glass sheets (100, 200) laminated together by an interlayer (300).

[0051] A first zone and a second zone can be defined on the cover (1), where the first zone corresponds to the projection of the first field of view (11) on the cover (1), and the second zone corresponds to the projection of the second field of view (21) on the cover (1).

[0052] Figure 1An optional anti-reflection coating located on the outer face (104) of the first glass sheet (100) and / or on the inner face (204) of the second glass sheet (200) is further shown. Figure 1 An optional waterproof coating located on the outer face (104) of the first glass sheet (100) is also shown. Figure 1 An optional heating coating or silver printing located on the inner face (204) of the second glass sheet (200) is also shown. All these optional elements can be applied to the following embodiments, but are not shown in order not to complicate the drawings. In addition, all examples show the case of a laminated cover, but the present invention can be applied to a monolithic cover made of a single glass sheet or a cover including more than two glass sheets.

[0053] Figures 2a to 2d The following various deposition alternatives of the ink (400) are shown:

[0054] a on the inner face (102) of the first glass sheet (100);

[0055] b on the interlayer (300);

[0056] c on the outer face (203) of the second glass sheet (200);

[0057] d on the inner face (204) of the second glass sheet (200).

[0058] The ink (400) is transparent in the operating wavelength range of the first optical sensor (10) and opaque in the operating wavelength range of the second optical sensor (20). The ink (400) can be deposited by screen printing technology or any other technology known to those skilled in the art. In order not to deposit the ink (400) in the second zone of the cover (1), a mask is usually applied during the application of the ink (400), so that there is no ink (400) in the area covered by the mask.

[0059] Figure 3 An alternative of the Figure 2b shown product is shown. Instead of using the mask technology as described above, the interlayer (300) can be completely printed with the ink (400). Before laminating the two glass sheets (100, 200) with the interlayer (300), a certain part of the interlayer (300) is cut out and replaced with an insert (310) corresponding to the second zone of the cover (1). The insert is transparent in the operating wavelength range of the second optical sensor (20). It allows for better optical quality in the second field of view.

[0060] Figure 4An embodiment is shown in which a film (500) is positioned between a first glass sheet (100) and an interlayer (300). Such a product also allows for better optical quality to be obtained in a second field of view.

[0061] Figure 5 An embodiment is shown in which an interlayer (600) is placed between a first glass sheet and a second glass sheet (100, 200), the interlayer being transparent within the operating wavelength range of a first optical sensor (10) and opaque within the operating wavelength range of a second optical sensor (20). Before laminating the two glass sheets (100, 200) with the interlayer (600), a certain portion of the interlayer (600) is cut out and replaced with an insert (650) corresponding to a second region of a cover (1). The insert is transparent within the operating wavelength range of the second optical sensor (20). Such a cover (1) allows for better optical quality to be obtained in a second field of view.

[0062] Figure 6 An embodiment is shown in which a film (700) is placed between a first interlayer and a second interlayer (301, 302), the film being transparent within the operating wavelength range of a first optical sensor (10) and opaque within the operating wavelength range of a second optical sensor (20), the first interlayer and the second interlayer themselves being placed between a first glass sheet and a second glass sheet (100, 200). A certain portion of the film (700) is cut out and replaced with an insert (750) corresponding to a second region of a cover (1). The insert is transparent within the operating wavelength range of the second optical sensor (20).

[0063] Figure 7 An embodiment is shown in which a film (800) is placed between a first interlayer and a second interlayer (301, 302), the film being transparent within the operating wavelength ranges of a first optical sensor and a second optical sensor (10, 20), the first interlayer and the second interlayer themselves being placed between a first glass sheet and a second glass sheet (100, 200). Except for a second region of a cover (1), the film (800) is printed with an ink (900). The ink (900) is transparent within the operating wavelength range of the first optical sensor (10) and opaque within the operating wavelength range of the second optical sensor (20).

[0064] Although the present invention has been shown and described in detail in the drawings and the foregoing description, such showings and descriptions are to be considered illustrative or exemplary and not restrictive. The foregoing description has described in detail certain embodiments of the present invention. However, it is to be understood that, however detailed the foregoing may appear in text, the present invention may be practiced in many ways. The present invention is not limited to the disclosed embodiments.

Claims

1. A cover (1) for a vehicle sensor module, wherein, The vehicle sensor module includes at least two different optical sensors (10, 20), wherein a first optical sensor (10) having a first field of view (11) operates in the near-infrared wavelength range, and a second optical sensor (20) having a second field of view (21) operates in the visible wavelength range. The cover (1) includes at least a first glass sheet (100), and the absorption coefficient of the first glass sheet within the operating wavelength range of the first optical sensor (10) is less than 15 m -1 , the at least first glass sheet (100) includes an inner face (102) intended to face the at least two different optical sensors (10, 20) and an outer face (101) opposite to the inner face (102), and the cover (1) includes: i. A first zone, which is intended to at least correspond to the projection of the first field of view (11) onto the cover (1); ii. A second zone different from the first zone, which is intended to at least correspond to the projection of the second field of view (21) onto the cover (1); The cover (1) is characterized in that the first zone is transparent within the operating wavelength range of the first optical sensor (10), and the second zone is transparent within the operating wavelength range of the second optical sensor (20).

2. The cover (1) according to claim 1, wherein, The cover (1) further comprises: i. A second glass sheet (200) having an absorption coefficient lower than 15 m in the operating wavelength range of the first optical sensor (10). -1 The second glass sheet (200) includes an inner face (204) intended to face the at least two different optical sensors (10, 20) and an outer face (203) opposite the inner face (204). ii. An interlayer (300) that laminates the inner face (102) of the first glass sheet (100) and the outer face (203) of the second glass sheet (200), and the interlayer (300) is transparent within the operating wavelength ranges of both the first optical sensor and the second optical sensor (10, 20).

3. The cover (1) according to claim 1 or 2, wherein, An ink (400) that is transparent within the operating wavelength range of the first optical sensor (10) and opaque within the operating wavelength range of the second optical sensor (20) is integrally applied to the inner face (102) of the first glass sheet (100), or the inner face (203) or the outer face (204) of the second glass sheet (200), or the interlayer (300), all avoiding the second zone of the cover (1).

4. The lid (1) according to claim 3, wherein, The interlayer (300) is replaced by an insert (310) in the second zone, and the insert (310) is transparent within the operating wavelength range of the second optical sensor (20).

5. The cover (1) according to claim 1 or 2, wherein, A film (500) that is transparent within the operating wavelength range of the first optical sensor (10) and opaque within the operating wavelength range of the second optical sensor (20) is integrally applied to the inner face (102) of the first glass sheet (100), or the inner face (203) or the outer face (204) of the second glass sheet (200), or the interlayer (300), all avoiding the second zone of the cover (1).

6. The lid (1) according to claim 1, wherein, The cover (1) further comprises: i. A second glass sheet (200) having an absorption coefficient lower than 15 m in the operating wavelength range of the first optical sensor (10). -1 The second glass sheet (200) includes an inner face (203) intended to face the at least two different optical sensors (10, 20) and an outer face (204) opposite to the inner face (203). ii. An interlayer (600) that laminates the inner face (102) of the first glass sheet (100) and the outer face (203) of the second glass sheet (200), and the interlayer (600) is transparent within the operating wavelength range of the first optical sensor (10), wherein the interlayer (600) is replaced by an insert (650) in the second zone, and the insert (650) is transparent within the operating wavelength range of the second optical sensor (20).

7. The cover (1) according to claim 1, wherein, The cover (1) further comprises: i. A second glass sheet (200) having an absorption coefficient lower than 15 m within the operating wavelength range of the first optical sensor (10). -1 The second glass sheet (200) includes an inner surface (203) intended to face the at least two different optical sensors (10, 20) and an outer surface (204) opposite to the inner surface (203). ii. A film (700) that is transparent within the operating wavelength range of the first optical sensor (10) and opaque within the operating wavelength range of the second optical sensor (20), and the film (700) is replaced by an insert (750) in the second zone, and the insert (750) is transparent within the operating wavelength range of the second optical sensor (20); iii. A first interlayer (301) that laminates the inner surface (102) of the first glass sheet (100) and the thin film (700), and the first interlayer (301) is transparent within the operating wavelength ranges of both the first optical sensor and the second optical sensor (10, 20); iv. A second interlayer (302) that laminates the outer surface (203) of the second glass sheet (200) and the thin film (700), and the second interlayer (302) is transparent within the operating wavelength ranges of both the first optical sensor and the second optical sensor (10, 20).

8. The cover (1) according to claim 1, wherein, The cover (1) further includes: i. A second glass sheet (200) having an absorption coefficient lower than 15 m in the operating wavelength range of the first optical sensor (10). -1 The second glass sheet (200) includes an inner face (203) intended to face the at least two different optical sensors (10, 20) and an outer face (204) opposite to the inner face (203). ii. A thin film (800) that is transparent within the operating wavelength ranges of the first optical sensor and the second optical sensor (10, 20). Except for the second region of the cover (1), the thin film (800) is covered with an ink (900) that is transparent within the operating wavelength range of the first optical sensor (10) and opaque within the operating wavelength range of the second optical sensor (20); iii. A first interlayer (301) that laminates the inner surface (102) of the first glass sheet (100) and the thin film (800), and the first interlayer (301) is transparent within the operating wavelength ranges of both the first optical sensor and the second optical sensor (10, 20); iv. A second interlayer (302) that laminates the outer surface (203) of the second glass sheet (200) and the thin film (800), and the second interlayer (302) is transparent within the operating wavelength ranges of both the first optical sensor and the second optical sensor (10, 20).

9. The lid (1) according to any one of the preceding claims, wherein, The first optical sensor (10) is a lidar or a near-infrared camera.

10. The lid (1) according to any one of the preceding claims, wherein, The second optical sensor (20) is a camera.

11. The lid (1) according to any one of the preceding claims, wherein, The absorption coefficients of the first glass sheet and the second glass sheet (100, 200) within the operating wavelength range of the second optical sensor (20) are less than 10 m -1 , more preferably less than 5 m -1 .

12. The cover (1) according to any one of the preceding claims, wherein, The outer surface (101) of the first glass sheet (100) and / or the inner surface (204) of the second glass sheet (200) is coated with an anti-reflection coating (5).

13. The lid (1) according to any one of the preceding claims, wherein, The outer surface (101) of the first glass sheet (100) is coated with a waterproof coating (6).

14. The lid (1) according to any one of the preceding claims, wherein, The cover (1) further includes a silver print (7) or a conductive coating (7).

15. The lid (1) according to any one of the preceding claims, wherein, The cover (1) is part of a windshield, rear window glass, side window glass, or exterior decorative element of a vehicle.

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