Window unit, display apparatus, and means of transport

Abstract

Provided in the present application is a window unit, which can be applied to a display apparatus. The window unit provided in the present application can eliminate stray light in an environment, such that the aims of reducing the reflectivity of stray light on the surface of a display apparatus and eliminating glare in the display apparatus are achieved, thereby achieving the aims of improving the display effect and the user experience. The window unit provided in the present application comprises a light-splitting film, a substrate and a first dielectric, wherein the light-splitting film is used for reflecting first image light and transmitting second image light, the second image light being generated on the basis of the first image light, and the second image light being transmitted from a first surface of the substrate to a second surface thereof relative to the first surface; and the first dielectric is used for eliminating stray light transmitted from the second surface of the substrate to the first surface thereof

Description

Window unit, display device and vehicle

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 2, 2024, with application number 202410014123.4 and invention name “A Window Unit, Display Device and Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the fields of display technology and intelligent automobile driving technology, and more particularly, to a window unit, a display device, and a vehicle. Background Art

[0003] Cars have become an indispensable means of transportation in people's daily lives. With the development of intelligent cars, people's demand for cars has been upgraded from simple means of transportation to a living space with certain information acquisition and entertainment enjoyment. Among them, display devices based on virtual image display technology research provide users with a new intelligent in-car display experience.

[0004] In some virtual image display devices, users view images and videos through an optical window. As a window for light transmission, the optical window cannot prevent external stray light from entering the display device. However, when stray light entering through the optical window is reflected inside the device, it produces strong glare, causing visual fatigue, affecting viewing quality, and degrading the user's viewing experience.

[0005] Therefore, how to reduce the reflection of external stray light on the display device and the glare caused by the stray light entering the display device, improve the display effect of the display device, and thus achieve the purpose of improving user experience, is a problem that needs to be solved. Summary of the Invention

[0006] The present application provides a window unit, a display device, and a vehicle. The window unit provided in the present application can eliminate stray light in the environment, reduce glare in the display device, and reduce the reflection of stray light by the window unit, thereby achieving the purpose of improving display effects and user experience.

[0007] In a first aspect, an embodiment of the present application provides a window unit. The window unit provided by the present application includes a diaphragm, a substrate, and a first medium. The diaphragm is configured to reflect a first image light and transmit a second image light, the second image light being generated based on the first image light and transmitted from a first surface of the substrate to a second surface of the substrate, the first and second surfaces being opposite each other. The first medium is configured to eliminate stray light, the stray light being transmitted from the second surface to the first surface.

[0008] Based on the above solution, the window unit provided in the present application eliminates stray light through the first medium, so that after the window unit provided in the present application is applied to the display device, it can reduce and eliminate the reflection of stray light on the window unit, and at the same time can also reduce and eliminate the glare caused by stray light, thereby achieving the purpose of improving the display effect.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the external absorption rate A of the window unit is EXT and internal absorption rate A INT Satisfied: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Satisfaction: R EXT ≤R INT , wherein the external absorption rate A EXT is the absorptivity of the window unit to the stray light, the internal absorptivity A INT is the absorptivity of the window unit to the second image light, and the external reflectivity R EXT is the reflectivity of the window unit to the stray light, the internal reflectivity R INT is the reflectivity of the window unit to the first image light.

[0010] Based on the above solution, the window unit provided in the present application has a greater absorption rate for stray light than for image light, which can ensure the display effect of the display device.

[0011] In combination with the first aspect, in some implementations of the first aspect, the first medium is at least one layer of an optical film made of a metal material, and the optical film is disposed on the surface of the prismatic film or inside the prismatic film.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the material of the optical film is metal chromium Cr or metal titanium Ti.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the external absorption rate A EXT The range of satisfaction: 40% ≤ A EXT ≤95%, the internal reflectivity R INT The range of satisfaction: 10% ≤ R INT ≤60%.

[0014] In combination with the first aspect, in some implementations of the first aspect, the window unit further includes a neutral density ND filter, which is arranged outside the first surface and / or the second surface, and the ND filter is used to eliminate the stray light.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the external absorption rate A EXT The range of satisfaction: 45% ≤ A EXT ≤99%, the internal reflectivity R INT The range of satisfaction: 10% ≤ R INT ≤60%.

[0016] In combination with the first aspect, in some implementations of the first aspect, the window unit further includes a polarization module, the polarization module includes a plurality of polarization elements, and the polarization module is arranged outside the second surface to eliminate the stray light.

[0017] In combination with the first aspect, in some implementations of the first aspect, the window unit further includes a polarization module, the polarization module includes a plurality of polarization elements, and the polarization module is arranged on the outside of the second surface to eliminate the stray light.

[0018] In combination with the first aspect, in certain implementations of the first aspect, the external absorption rate A EXT The range of satisfaction: 60% ≤ A EXT ≤99%, the internal reflectivity R INT The range of satisfaction: 10% ≤ R INT ≤60%.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the first medium is a neutral density ND filter, the ND filter is arranged on the first surface and / or outside the second surface, and the ND filter is used to eliminate the stray light.

[0020] In combination with the first aspect, in some implementations of the first aspect, the window unit further includes a polarization module, the polarization module includes a plurality of polarization elements, and the polarization module is arranged on the outside of the second surface to eliminate the stray light.

[0021] In combination with the first aspect, in some implementations of the first aspect, the first medium is a polarization module, the polarization module includes a plurality of polarization elements, and the polarization module is disposed outside the second surface to eliminate the stray light.

[0022] In combination with the first aspect, in some implementations of the first aspect, the window unit further includes an anti-reflection film, which is disposed on an outer side of the second surface to eliminate the stray light.

[0023] In combination with the first aspect, in certain implementations of the first aspect, a reflectivity of the window unit to the stray light is less than 4%.

[0024] In a second aspect, embodiments of the present application provide a display device. The display device includes: an image generating unit, an image magnifying unit, and a window unit provided in any one of the implementations of the first aspect and the first aspect above, wherein the image generating unit is configured to emit the first image light toward the window unit; the window unit is further configured to allow a human eye to view a virtual image formed by the second image light through the window unit; and the image magnifying unit generates the second image light based on reflection of the first image light from the window unit.

[0025] In a third aspect, an embodiment of the present application provides a cockpit system, which includes the display device provided in the second aspect above.

[0026] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising the display device provided in the second aspect or the cockpit system provided in the third aspect.

[0027] In combination with the fourth aspect, in certain implementations of the fourth aspect, the display device is arranged at at least one of a headrest of a seat of the vehicle, a seat back of the seat of the vehicle, and a dashboard of the vehicle.

[0028] The beneficial effects brought about by the above-mentioned second and fourth aspects can be specifically referred to the description of the beneficial effects in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic diagram of an application scenario of a smart cockpit display system 100 applicable to an embodiment of the present application.

[0030] FIG2 is a schematic diagram of an application scenario of a smart cockpit display system 200 applicable to an embodiment of the present application.

[0031] FIG3 is a schematic structural diagram of a first window unit 300 provided in an embodiment of the present application.

[0032] FIG4 is a schematic partial structural diagram of the first window unit provided in the present application, which has 39 film layers.

[0033] FIG5 is a schematic diagram showing a comparison of the internal reflectivity of a window unit provided by the present application, which has only the prismatic film 302 and a window unit which has both the prismatic film 302 and the optical film 303 .

[0034] FIG6 is a schematic diagram showing a comparison of the external reflectivity of a window unit provided by the present application, which has only the prismatic film 302 and a window unit which has both the prismatic film 302 and the optical film 303 .

[0035] FIG. 7 is a schematic diagram showing a comparison of the external absorption rates of a window unit provided by the present application that has only the prismatic film 302 and a window unit that has both the prismatic film 302 and the optical film 303 .

[0036] FIG8 is a schematic diagram of the internal absorption rate and the external absorption rate of the window unit provided by the present application, which has both the prismatic film 302 and the optical film 303 .

[0037] FIG9 is a schematic structural diagram of a second window unit 900 provided in this application.

[0038] FIG10 is a schematic structural diagram of the third window unit 1000 provided in this application.

[0039] FIG11 is another structural diagram of the third window unit 1000 provided in this application.

[0040] FIG12 is a schematic structural diagram of a polarization module 1005 applicable to the present application.

[0041] FIG13 is a schematic structural diagram of the fourth window unit 1300 provided in this application.

[0042] FIG14 is a schematic structural diagram of the fifth window unit 1400 provided in this application.

[0043] FIG15 is a schematic partial structural diagram of the second window unit provided in the present application, which has 39 film layers.

[0044] FIG16 is a schematic structural diagram of the sixth window unit 1600 provided in this application.

[0045] FIG17 is a schematic structural diagram of the seventh window unit 1700 provided in this application.

[0046] FIG18 is a schematic structural diagram of the eighth window unit 1800 provided in this application.

[0047] FIG19 is a schematic structural diagram of the ninth window unit 1900 provided in this application.

[0048] FIG20 is a schematic structural diagram of the tenth window unit 2000 provided in this application.

[0049] FIG21 is a schematic structural diagram of the ninth window unit 2100 provided in this application.

[0050] FIG. 22 is a perspective view of a possible side structure of a display device 30 suitable for an embodiment of the present application.

[0051] FIG23 is a circuit diagram of a display device provided in an embodiment of the present application.

[0052] FIG24 is a schematic diagram of a possible functional framework of a vehicle provided in an embodiment of the present application.

[0053] FIG25 is a schematic functional block diagram of a mobile carrier 25 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The technical solution in this application will be described below with reference to the accompanying drawings.

[0055] In order to facilitate understanding of the embodiments of the present application, the following explanations are provided.

[0056] First, in the following descriptions or drawings of the embodiments of the present application, terms such as "first," "second," and various numbers are used for ease of description and are not intended to limit the scope of the embodiments of the present application. For example, the first image light and the second image light are used to distinguish between different image lights.

[0057] Second, the terms "including" and "having" and any variations thereof in the embodiments of the present application shown below are intended to cover non-exclusive inclusions. For example, a system, product or device that includes a series of units is not necessarily limited to those units explicitly listed, but may include other units that are not explicitly listed or are inherent to these products or devices.

[0058] Third, in the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. An embodiment or design described as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. The use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete manner to facilitate understanding.

[0059] Fourth, in the embodiments of the present application, image light refers to light carrying an image (or image information) and is used to generate an image, and may also be referred to as imaging light, etc.

[0060] Fifth, in the drawings of this application, the thickness, size, and shape of each optical element have been slightly exaggerated for ease of illustration. Specifically, the shapes of the optical elements shown in the drawings are by way of example, and the drawings are for illustrative purposes only and are not drawn strictly to scale.

[0061] Sixth, in the description of the embodiments of the present application, the terms "upper", "lower", "outside", etc. indicate orientations or positional relationships that are defined relative to the orientations or positions of the components schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative descriptions and clarifications, rather than indicating or implying that the device or structural component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They may change accordingly according to changes in the orientation of the components placed in the drawings, and therefore cannot be understood as limitations on the present application.

[0062] Seventh, unless otherwise defined, all terms (including technical and scientific terms) used in this application have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs.

[0063] Eighth, the present application relates to neutral density (ND) filters, which can also be called ND films, neutral density films, neutral filters, attenuation films, fixed density filters, etc. ND filters absorb or reflect the portion of light that is not transmitted to uniformly reduce the transmittance in a certain part of the spectrum. Reflective ND filters use the principle of thin film interference to transmit part of the light and reflect the other part of the light. Absorption-type ND filters generally refer to materials themselves or materials doped with certain elements to absorb light. In the present application, an absorption-type ND filter is used, which absorbs light by doping with metal ions, including but not limited to iron ions or cobalt ions; or doping with organic dyes, including but not limited to melanin or aniline black; or doping with inorganic substances, including but not limited to carbon powder or carbon nanotubes; or various combinations of the above materials.

[0064] Ninth, this application relates to a window unit, which may also be referred to as a window, optical window, window, or window module. This is a transparent window used in an optical system that allows light to enter or exit the system. The main function of a window unit is to separate the two environments, such as the interior and exterior of an instrument, thereby isolating the interior and exterior of the instrument from each other and protecting the internal components. While allowing light to pass through, it also prevents contamination, maintains a vacuum, and prevents oxidation. It does not change the optical magnification and only affects the optical path length.

[0065] Tenth, the present application relates to an anti-reflection coating (AR), also known as an anti-reflection coating or an anti-reflection coating. It is generally formed by coating a multilayer thin film on a substrate. The multilayer thin film is usually composed of alternating materials of high refractive index and low refractive index. Among them, the film layer with a high refractive index will cause the phase of the light wave to be delayed, and the film layer with a low refractive index will cause the phase of the light wave to be advanced. The principle of the anti-reflection coating is to reduce the refractive index difference between the external environment and the substrate (the substrate coated with the anti-reflection coating) so that the stray light is transmitted through the substrate as much as possible, thereby reducing the stray light reflected from the surface of the substrate. At the same time, the design of the high refractive index and low refractive index film layers can make the stray light reflected from the substrate interfere with the stray light reflected from the surface of the anti-reflection coating, thereby achieving the purpose of extinction.

[0066] With the rapid development of smart cars, cars are playing an increasingly important role in people's lives, and the demand for in-vehicle displays is gradually increasing. For example, they can provide entertainment services such as games and movies for passengers on long rides. Alternatively, they can provide office workers with a private office display environment. In some in-vehicle projection display devices, users can view large, long-distance virtual images through an optical window. However, in such display devices, stray light from the environment can enter the display through the optical window, increasing the risk of light leakage and glare from the optical window.

[0067] In light of this, the present application provides a window unit with strong stray light elimination capabilities, capable of reducing stray light reflections on the window unit while simultaneously eliminating glare. When the window unit provided by the present application is applied to a display device, it can improve image quality and provide the display device with excellent display performance.

[0068] FIG1 is a schematic diagram of an application scenario of an intelligent cockpit display system 100 applicable to an embodiment of the present application. As shown in FIG1 , the intelligent cockpit display system 100 includes at least one display device 101 and at least one seat 102. FIG1 is an example of a display device and a seat, with the display device 101 disposed on the backrest of the seat 102. The display device 101 can generate an enlarged virtual image at a distant image plane through the input of an external video signal (also referred to as a signal source), providing viewers with a large-format, long-distance visual experience, meeting the needs of users in various application scenarios such as leisure and entertainment, business office, etc.

[0069] It should be noted that the display device 101 can also be mounted on the headrest of the seat 102. Alternatively, when the intelligent cockpit display system also includes an instrument panel, the display device 101 can also be mounted on the instrument panel, as shown in cockpit system 200 in FIG2 . When the display device 101 is mounted on the instrument panel 202, it can also be designed to be retractable within the instrument panel 202. In this case, the outer shell of the display device 101 can be designed and styled based on the shape and color of the instrument panel, achieving a perfect uniformity with the appearance of the instrument panel 202 and achieving the aesthetics of the cockpit system 200. To further enhance the intelligent cockpit system, the system 200 can also utilize a detector to detect information such as the user's posture and position, and automatically display the display device 101 based on this information. For example, when the user is detected in front of the instrument panel 202 or the user's eyes are looking at the display device 101, the display device 101 can automatically rise or slide out of the instrument panel 202 and autonomously adjust to the appropriate position and angle to display the image.

[0070] It should also be noted that in the embodiment of the present application, the display device 101 can be installed on the seat back, headrest, or instrument panel 202 of the seat 102 before leaving the factory. Alternatively, the display device 101 can be installed on the seat back, headrest, or instrument panel 202 of the seat 102 after leaving the factory by modifying the seat 102, headrest, or instrument panel 202, respectively. This application does not limit this.

[0071] It can be understood that the smart cockpit display systems 100 and 200 shown in Figures 1 and 2 are merely examples, that is, the smart cockpit display systems applicable to the embodiments of the present application are not limited to those shown in Figures 1 or 2, but may also be other systems including the smart cockpit display systems 100 or 200 shown in Figures 1 or 2 or other systems similar to Figures 1 or 2, and this application does not limit this.

[0072] It should also be noted that the above Figures 1 and 2 are only an application scenario applicable to the embodiment of the present application, that is, the window unit provided by the present application can be applied to the display device in other display systems. In other words, the application of the display device provided by the embodiment of the present application includes but is not limited to application to the vehicle display system.

[0073] FIG3 is a schematic structural diagram of a first window unit 300 provided in an embodiment of the present application. It is understood that the window unit 300 can be applied to the display device 101 shown in FIG1 or FIG2 . Specifically, as shown in FIG3 , the window unit 300 includes a substrate 301, a diaphragm 302, and an optical film 303. The substrate 301 includes a first surface 3011 and a second surface 3012 that are relatively distributed. The diaphragm 302 is disposed on the outer side of the first surface 3011 of the substrate 301 and is configured to reflect a first image light and transmit a second image light toward the substrate 301. The second image light is generated based on the first image light and is transmitted along the first surface 3011 of the substrate 301 to the second surface 3012. The optical film 303 is configured to eliminate stray light, which is transmitted from the second surface 3012 of the substrate 301 to the first surface 3011.

[0074] In the present application, the spectroscopic film 302 is composed of at least one dielectric film. Specifically, as shown in FIG3 , the spectroscopic film 302 includes a first dielectric film, a second dielectric film, a third dielectric film, and an m-th dielectric film, where m is an integer greater than or equal to 1, for example, 1, 2, 3, etc. It should be noted that the material of at least one dielectric film layer can be silicon oxide, such as SiO2, magnesium fluoride, such as MgF2, niobium oxide, such as Nb2O5, titanium oxide, such as TiO2, indium tin oxide ITO, zinc sulfide ZnS, chromium oxide, nickel oxide, aluminum oxide, etc., and this application does not limit this. At the same time, when the spectroscopic film 302 includes multiple layers of dielectric films, this application does not limit whether the materials of the multiple layers of dielectric films are completely identical. That is, in the present application, the materials of the multiple layers of dielectric films can be completely identical, completely different, or partially identical. For example, when the spectroscopic film 302 includes five dielectric film layers, that is, when m is equal to 5, the spectroscopic film 302 includes a first dielectric film layer, a second dielectric film layer, a third dielectric film layer, a fourth dielectric film layer, and a fifth dielectric film layer. In this case, the first dielectric film layer, the second dielectric film layer, the third dielectric film layer, the fourth dielectric film layer, and the fifth dielectric film layer can be completely identical; or the materials of the first dielectric film layer, the second dielectric film layer, the third dielectric film layer, the fourth dielectric film layer, and the fifth dielectric film layer can be completely different; or the first dielectric film layer, the second dielectric film layer, the third dielectric film layer, the fourth dielectric film layer, and the fifth dielectric film layer can have some of the same dielectric film materials, for example, the material of the first dielectric film layer is the same as the material of the third dielectric film layer, but different from the materials of the second dielectric film layer, the fourth dielectric film layer, and the fifth dielectric film layer, etc., which will not be further described here.

[0075] In the present application, the optical film 303 is composed of at least one layer of metal film. Specifically, as shown in FIG3 , the optical film 303 includes a first layer of metal film, a second layer of metal film, a third layer of metal film... and an nth layer of metal film, wherein n is an integer greater than or equal to 1, for example, 1, 2, 3... It should be noted that the material of at least one layer of metal film can be nickel, chromium, titanium, tantalum, silver, gold, copper, zinc, aluminum or an alloy, etc., which is not limited in the present application. At the same time, when the optical film 303 includes multiple layers of metal films, the present application does not limit whether the materials of the multiple layers of metal films are exactly the same. That is, in the present application, the materials of the multiple layers of metal films can be exactly the same, completely different, or partially the same. For example, when the optical film 303 includes three layers of metal films, that is, when n is equal to 3, the optical film 303 includes a first layer of metal film, a second layer of metal film and a third layer of metal film. At this time, the first metal film, the second metal film and the third metal film can be exactly the same; or, the materials of the first metal film, the second metal film and the third metal film are completely different; or there are two metal films in the first metal film, the second metal film and the third metal film that have the same material, for example, the material of the first metal film is the same as the material of the third metal film, but different from the material of the second metal film, etc., which will not be repeated here.

[0076] Specifically, in the present application, when stray light is transmitted from the substrate 301 to the optical film 303, at least one metal film in the optical film 303 can absorb the stray light, thereby reducing the reflection of the stray light on the window unit and eliminating glare.

[0077] It should be noted that in FIG3 , the optical thin film 303 and the bezel film 302 are both disposed on the outside of the first surface 3011 of the substrate 301. Furthermore, the at least one metal film layer of the optical thin film 303 is disposed between the multiple dielectric films of the bezel film 302. However, the present application is not limited to this position for the optical thin film 303 and the bezel film 302. In other embodiments, one of the at least one metal film layers of the optical thin film 303 is disposed on the first surface 3011 of the substrate 301 (or, on the surface of the first dielectric film of the bezel film 302 that is closest to the first surface 3011 of the substrate 301). Alternatively, in still other embodiments, one of the at least one metal film layers of the optical thin film 303 is disposed on the surface of the last dielectric film of the bezel film 302 that is farthest from the first surface 3011 of the substrate 301. Alternatively, in still other embodiments, one of the at least one metal film layers of the optical thin film 303 is disposed on the second surface 3012 of the substrate 301.

[0078] For example, when the optical thin film 303 includes a metal film, the metal film can be disposed on the first surface 3011 of the substrate 301, or on the surface of the first dielectric film of the prismatic film 302 close to the first surface 3011 of the substrate 301, or between the substrate 301 and the prismatic film 302. In this case, the metal film can absorb stray light transmitted from the substrate 301 and stray light reflected by the prismatic film 302, while receiving the second image light transmitted from the prismatic film 302 and transmitting the second image light to the substrate 301. Alternatively, the metal film can be disposed on the outer surface of the last dielectric film of the prismatic film 302 away from the first surface 3011 of the substrate 301. In this case, the metal film can absorb stray light transmitted from the prismatic film 302 and stray light reflected by components within the display device in which the window unit 300 is mounted, and transmit the second image light to the prismatic film 302. Alternatively, the metal film can also be arranged on the second surface 3012 of the substrate 301. In this case, the metal film can directly absorb stray light from the external environment, weaken the stray light entering the substrate 301, and absorb the stray light reflected and transmitted by the substrate 301.

[0079] For example, when the optical thin film 303 includes a multilayer metal film, two metal films within the multilayer metal film can be disposed on the first surface 3011 of the substrate 301 (i.e., disposed on the surface of the first dielectric film of the prismatic film 302 adjacent to the first surface 3011 of the substrate 301, i.e., disposed between the substrate 301 and the prismatic film 302), and on the second surface 3012 of the substrate 301. In this case, the metal film disposed on the first surface 3011 of the substrate 301 can absorb stray light transmitted from the substrate 301 and stray light reflected by the prismatic film 302, and transmit the second image light transmitted from the prismatic film 302 to the substrate 301. The metal film disposed on the second surface 3012 of the substrate 301 can directly absorb stray light from the external environment, reducing the amount of stray light entering the substrate 301, while also absorbing stray light reflected and transmitted by the second surface 3012 of the substrate 301. Alternatively, two metal films from the multilayer metal film can be disposed on the outer surface of the last dielectric film of the prismatic film 302, distal from the first surface 3011 of the substrate 301, or on either the first surface 3011 or the second surface 3012 of the substrate 301. In this case, the metal film disposed on the outer surface of the last dielectric film of the prismatic film 302, distal from the first surface 3011 of the substrate 301, can absorb stray light transmitted from the prismatic film 302 and stray light reflected from components within the display device in which the window unit 300 is mounted, and transmit the second image light toward the prismatic film 302. The metal film disposed on the first surface 3011 of the substrate 301 (i.e., disposed on the surface of the first dielectric film of the prismatic film 302, distal from the first surface 3011 of the substrate 301, i.e., disposed between the substrate 301 and the prismatic film 302) can absorb stray light transmitted from the substrate 301 and stray light reflected from the prismatic film 302, and transmit the second image light toward the substrate 301. The surface of the window unit 300 disposed on the second surface 3012 of the substrate 301 can directly absorb stray light from the external environment, reduce the stray light entering the substrate 301 , and absorb the stray light reflected and transmitted by the substrate 301 .

[0080] It should also be noted that when the optical thin film 303 includes multiple layers of metal films, the multiple layers of metal films can be inserted between the multiple layers of dielectric films in a uniform or non-uniform manner. For example, in the embodiment shown in FIG3 , the multiple layers of metal films are uniformly arranged between the multiple layers of dielectric films. It is understood that when the multiple layers of metal films can be arranged between the multiple layers of dielectric films in a non-uniform manner, the number of dielectric films included between two adjacent layers of metal films may not be exactly the same. Furthermore, in the embodiment of the present application, the number of metal films included in the optical thin film 303 can be the same as the number of dielectric films included in the spectroscopic film 302, or the number of metal films included in the optical thin film 303 can be different from the number of dielectric films included in the spectroscopic film 302, and this application does not limit this.

[0081] Optionally, the material of substrate 301 is inorganic glass, such as silicon dioxide SiO2, borosilicate glass BK7, etc. Alternatively, the material of substrate 301 is thermoplastic, such as polypropylene (PP), polymethyl methacrylate (PMMA), polycarbonate (PC), etc. Alternatively, the material of substrate 301 is other materials, such as triacetyi cellulose (TAC), etc., which are not limited in this application.

[0082] It is understood that in the embodiment of the present application, the spectroscopic film 302 and the optical film 303 can both be produced by physical vapor deposition (PVD) or chemical vapor deposition (CVD), such as atomic layer deposition (ALD), or sputtering, or wet coating, and this application does not limit this. Among them, the processes such as PVD, CVD, ALD, sputtering and wet coating can refer to the existing related technical process descriptions and will not be repeated here. It is also understood that the processes listed above for generating the spectroscopic film 302 and the optical film 303 are currently common film-making processes. For other film-making processes that emerge due to future technological developments, as long as they can be applied to the manufacture of the spectroscopic film 302 and the optical film 303 in the solution of this application, they all fall within the scope of protection of this application.

[0083] It should be noted that, since the window unit provided in the embodiment of the present application not only absorbs external stray light (achieved by at least one of the above-mentioned optical film 303, the ND filter, the polarization module, and the anti-reflection film), but also reflects the first image light and transmits the second image light (achieved by the beam splitter film), in order to avoid the window unit absorbing stray light while losing too much image light and causing degradation of imaging quality, in the design of the present application, the external absorption rate A of the window unit is set to 0. EXT , internal absorption rate A INT , external reflectivity R EXT and internal reflectivity R INT There are performance requirements. Specifically, the external absorption rate A of the window unit EXT and internal absorption rate A INT Satisfied: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity RINT Satisfaction: R EXT ≤R INT Among them, the external absorption rate A EXT is the absorptivity of the window unit to stray light, internal absorptivity A INT is the absorption rate of the window unit to the second image light, and the external reflectivity R EXT is the reflectivity of the window unit to stray light, the internal reflectivity R INT is the reflectivity of the window unit to the first image light.

[0084] According to the law of conservation of energy, the external absorption rate A EXT By the external reflectivity R EXT and external transmittance T EXT Decision, that is, A EXT Satisfied: A EXT =1-R EXT -T EXT , where the external transmittance T EXT is the transmittance of the window unit to stray light. Similarly, the internal absorption rate A INT By the internal reflectivity R INT and internal transmittance T INT Decision, that is, A INT Satisfied: A INT =1-R INT -T INT , where the internal transmittance T INT is the transmittance of the window unit to the second image light.

[0085] Therefore, for the window unit 300 shown in FIG3 , the external absorption rate A of the window unit 300 is EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT Meanwhile, for the window unit 300 shown in FIG3 , the external absorption rate A EXT The range of satisfaction: 40% ≤ A EXT ≤95%, internal reflectivity R INT The range of satisfaction: 10% ≤ R INT ≤60%.

[0086] For example, FIG4 is a schematic partial structural diagram of the first type of window unit provided by the present application with 39 film layers. It can be understood that FIG4 is a specific structure of the window unit 300 shown in FIG3 above. As shown in FIG4, in the film layers from the 31st to the 39th layer, the metal film Cr layer (including the 32nd and 36th layers) is arranged between two adjacent SiO2 layers, wherein the 31st, 33rd, 35th, 37th and 39th layers are SiO2, belonging to the above-mentioned spectroscopic film 302, and the 34th and 38th layers are niobium pentoxide Nb2O5, belonging to the above-mentioned spectroscopic film 302. When the thickness of each layer from the 31st to the 39th layer is set as shown in Table 1 below, the external absorption rate A of the window unit shown in FIG4 is EXT is about 80%. When the thickness of each layer from the 31st to the 39th layer is set as shown in Table 2 below, the external absorption rate A of the window unit shown in Figure 4 is EXT It is about 57%.

[0087] Table 1

[0088] Table 2

[0089] It should be noted that in Tables 1 and 2 above, the 1 / 4 optical thickness value and physical thickness value of each film layer are only examples and do not limit the scope of protection of this application. That is, any changes to the values ​​in Tables 1 or 2 above are within the scope of protection of this application, for example, the values ​​of the above thicknesses may be taken to values ​​with higher or lower precision.

[0090] To illustrate the stray light elimination effect of the window unit provided by the present application, Figures 5 to 7 respectively show comparative effects of a conventional window unit containing only a bezel film and a window unit containing both a bezel film and an optical film provided by the present application. Figure 5 is a schematic diagram comparing internal reflectivity. As shown in Figure 5, the internal reflectivity of the conventional window unit containing only a bezel film and the window unit containing both a bezel film and an optical film is approximately 30%. Figure 6 is a schematic diagram comparing external reflectivity. As shown in Figure 6, the external reflectivity of the window unit containing both a bezel film and an optical film is less than 4.5% within the wavelength range of 400-700nm. The external reflectivity of the conventional window unit containing only a bezel film is approximately 28%. This higher reflectivity results in severe reflection in the conventional window unit containing only a bezel film. FIG7 is a schematic diagram showing a comparison of external absorption rates. As can be seen from FIG7 , the window unit with both a prismatic film and an optical film has an absorption rate of nearly 60% for external stray light, while a conventional window unit with only a prismatic film produces almost no additional absorption of stray light.

[0091] It is understandable that in order to avoid a significant impact on the light efficiency of the display device, the window unit should minimize the absorption of internal image light while absorbing external stray light. As can be seen from Figure 8, the window unit designed in this application, which has both a dichroic film and an optical film, has an absorption rate of nearly 60% for external light, while an absorption rate of only about 30% for internal light.

[0092] As can be seen from Figures 5 to 8 above, when the window unit 300 provided in the present application is applied to a display device, not only can the light path be folded by the dichroic film to achieve the purpose of reducing the volume of the display device, but the stray light entering the display device can also be absorbed by the optical film, thereby reducing the reflection of stray light, suppressing glare and improving the display effect.

[0093] It should be noted that, in the present application, there is no limitation on the number of substrates included in the window unit. In other words, the window unit 300 shown in FIG3 may also include multiple substrates, for example, two substrates, a first substrate and a second substrate. When two substrates are included, a portion of the dielectric film and / or optical film may be arranged on the first substrate, and another portion of the dielectric film and / or optical film may be arranged on the second substrate. FIG9 is a schematic structural diagram of the second window unit 900 provided in the present application. As shown in FIG9 , the window unit 900 includes a substrate 901, a spectroscopic film 902, an optical film 903 and an absorptive ND filter 904. Compared with the window unit 300 shown in FIG3 , the window unit 900 adds an absorptive ND filter 904. The absorptive ND filter 904 eliminates stray light by absorbing stray light, thereby further eliminating the glare caused by stray light. The absorptive ND filter 904 can be disposed on the first surface 9011 of the substrate 901, as shown in FIG9(a), or on the second surface 9012 of the substrate 901, as shown in FIG9(b). The functions and positions of the substrate 901, the prismatic film 902, and the optical film 903 can be referred to the descriptions of the substrate 301, the prismatic film 302, and the optical film 303 of the window unit 300 in FIG3, respectively, and will not be repeated here.

[0094] Optionally, the material of the absorptive ND filter 904 used in this application is a material doped with metal ions (e.g., iron ions or cobalt ions); or a material doped with an organic dye (e.g., melanin or aniline black); or a material doped with an inorganic substance (e.g., carbon powder or carbon nanotubes); or other materials, such as materials resulting from various combinations of the above examples, which are not limited in this application. Furthermore, this application does not limit the absorptive rate of the absorptive ND filter 904 used, and for example, it can be 30%, 40%, 50%, 60%, 70%, 80%, or any absorptive rate between 30% and 80%.

[0095] Optionally, the absorptive ND filter 904 is adhered to the first surface 9011 of the substrate 901 or the second surface 9012 of the substrate 901 by an optically clear adhesive.

[0096] It should be noted that the present application does not limit the positions of the bezel film 902, the optical film 903, and the absorptive ND filter 904. For example, when the absorptive ND filter 904 is disposed between the bezel film 902 or the optical film 903 and the surface (the first surface 9011 or the second surface 9012) of the substrate 901, the bezel film 902 or the optical film 903 can be disposed on the absorptive ND filter 904 by a process such as PVD, CVD, ALD, sputtering, or wet coating. In this case, the absorptive ND filter 904 is used to absorb stray light transmitted from the bezel film 902 or the optical film 903, that is, to absorb stray light not absorbed by the metal film, or to absorb stray light transmitted from the substrate 901. Exemplarily, when a metal film in the spectroscopic film 902 or the optical film 903 is arranged on the outside of the second surface 9012 of the substrate 901, the absorptive ND filter 904 can be arranged on the outside of the spectroscopic film 902 or the metal film, that is, the spectroscopic film 902 or the optical film 903 is arranged between the ND filter 904 and the second surface 9012 of the substrate 901. At this time, the metal film or the spectroscopic film can be arranged on the second surface 9012 by PVD, CVD, ALD, sputtering or wet coating, and the absorptive ND filter 904 is adhered to the metal film or the spectroscopic film 902 by optically transparent glue. At this time, the absorptive ND filter 904 is used to directly absorb stray light from the external environment.

[0097] It should also be understood that Figure 9 illustrates only an embodiment in which the window unit 900 includes a single absorptive ND filter 904. In other embodiments, the window unit provided herein may further include two absorptive ND filters. For example, the two absorptive ND filters may be disposed on two surfaces of the substrate 901, respectively, to further enhance the absorption of external stray light.

[0098] For the window unit 900 shown in FIG9 , the external absorption rate A of the window unit 900 EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT At the same time, the external absorption rate A EXTThe range of satisfaction: 45% ≤ A EXT ≤99%, internal reflectivity R INT The range of satisfaction: 10% ≤ R INT ≤60%.

[0099] It is understood that when the window unit 900 includes an absorptive ND filter, the external absorptivity of the window unit 900 is determined by the absorption performance of the absorptive ND filter, that is, absorptive ND filters with different absorptive rates are selected to achieve the external absorptivity and internal reflectivity of the window unit 900. For example, when the absorptive rate of the absorptive ND filter is 50%, the external absorptivity A of the window unit is 0. EXT When the absorption rate of the absorption type ND filter is 90%, the external absorption rate A of the window unit is about 50%. EXT About 90%.

[0100] It should be noted that Figure 9 is only an example of a window unit with a single substrate. In some embodiments, when a window unit includes an absorptive ND filter, the window unit may include multiple substrates. Figure 10 is a schematic structural diagram of a third window unit 1000 provided in this application. As shown in Figure 10, window unit 1000 includes a substrate 1001, a diaphragm 1002, an optical film 1003, an absorptive ND filter 1004, and a polarization module 1005. Compared to window unit 900 shown in Figure 9, window unit 1000 adds a polarization module 1005. Polarization module 1005 is disposed on the second surface 10012 of substrate 1001 to eliminate stray light. The descriptions of the substrate 1001, diaphragm 1002, optical film 1003, and absorptive ND filter 1004 can be found in the corresponding sections of Figure 3 or Figure 9, respectively, and will not be repeated here.

[0101] Optionally, the polarization module 1005 is bonded to the second surface 10012 of the substrate 1001 by optically transparent adhesive.

[0102] It should be noted that the present application does not limit the locations of the prismatic film 1002, optical film 1003, absorptive ND filter 1004, and polarization module. In some embodiments, when the prismatic film 1002 and / or optical film 1003 are disposed outside the second surface 10012 of the substrate 1001, the polarization module 1005 is adhered to the second surface 10012 of the substrate 1001 via the prismatic film 1002 and / or optical film 1003. For example, when a metal film, one of the optical films 1003, is disposed on the second surface 10012 of the substrate 1001, the polarization module 1005 is disposed on the surface of the metal film that is not in contact with the substrate 1001. In other embodiments, when the absorptive ND filter 1004 is arranged on the outside of the second surface 10012 of the substrate 1001, the polarization module 1005 is adhered to the absorptive ND filter 1004 by optically transparent adhesive. At this time, the absorptive ND filter 1004 can be arranged on the outside of the polarization module 1005, as shown in (a) in Figure 11, or the polarization module 1005 can be arranged on the outside of the absorptive ND filter 1004, as shown in (b) in Figure 11.

[0103] It should be noted that the polarization module 1005 achieves the effect of eliminating stray light by changing the polarization state of stray light. For example, FIG12 is a schematic structural diagram of a polarization module 1005 applicable to the present application. As shown in FIG12 , the polarization module 1005 includes a polarizer 121 and a quarter-wave plate 122. Specifically, when external stray light passes through the linear polarizer 121, the light loss is half of the linear polarized light, and the linear polarized light continues to be incident on the quarter-wave plate 122 and is converted into right-handed circularly polarized light (it can also be left-handed circularly polarized light, the direction of which is determined by the angle between the optical axes of the quarter-wave plate 122 and the linear polarizer 121). Subsequently, the right-handed circularly polarized light is reflected by other elements (such as the substrate 1001 or the optical film 1003 or the absorptive ND filter 1004) to form left-handed circularly polarized light (when the incident light is left-handed circularly polarized light, right-handed circularly polarized light is generated), and after passing through the 1 / 4 wave plate 122 again, an outgoing linear polarized light perpendicular to the polarization direction of the incident polarized light is generated. The outgoing linear polarized light cannot be emitted through the linear polarizer 121, thereby eliminating the incident stray light.

[0104] It should be noted that in the present application, the structure of the polarization module 1105 is not limited to the structure shown in FIG12 . For example, the polarization module 1005 may also include multiple linear polarizers 121 with parallel optical axes to further eliminate stray light. Alternatively, the polarization module 1005 may also include any combination of a half-wave plate, a linear polarizer, and a quarter-wave plate.

[0105] It should also be noted that, in some embodiments, the absorptive ND filter 1004 can also be replaced by a polarizer. If the polarization module 1005 is a combination of a linear polarizer and a quarter-wave plate, then at this time, along the incident direction of the stray light, a polarizer (for replacing the absorptive ND filter), a polarizer, a quarter-wave plate, a substrate, a dichroic film and an optical film are sequentially arranged.

[0106] It can be understood that for the window unit 1000 shown in FIG. 10 , the external absorption rate A of the window unit 1000 EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT .

[0107] Similarly, the window unit including the polarization module may also be composed of multiple substrates, which is not limited in this application.

[0108] FIG13 is a schematic structural diagram of the fourth window unit 1300 provided in this application. As shown in FIG13 , the window unit 1300 includes a substrate 1301, a diaphragm 1302, an optical film 1303, an absorptive ND filter 1304, a polarization module 1305, and an anti-reflection film 1306. Compared to the window unit 1000 shown in FIG10 , the window unit 1300 has an additional anti-reflection film 1306. The anti-reflection film 1306 is disposed on the outer side of the second surface 13012 of the substrate 1301, that is, on the surface of the absorptive ND filter 1304, to eliminate stray light. The description of the substrate 1301, the diaphragm 1302, the optical film 1303, the absorptive ND filter 1304, and the polarization module 1305 can be referred to in the corresponding parts of FIG3 , FIG9 , or FIG10 , and will not be repeated here.

[0109] It should be noted that the anti-reflection film 1306 can be disposed on the surface of the absorptive ND filter 1304 by processes such as PVD, CVD, ALD, sputtering or wet coating.

[0110] Specifically, since the anti-reflection film 1306 reduces the refractive index difference between the outside air and the absorptive ND filter 1304, when external stray light is incident on the surface of the anti-reflection film 1306, most of the stray light will transmit the absorptive ND filter 1304, and only a small amount of stray light will be reflected on the surface of the absorptive ND filter 1304 and reach the surface of the anti-reflection film 1306 again. This part of the stray light returning to the anti-reflection film 1306 interferes with the stray light reflected on the surface of the anti-reflection film 1306, thereby eliminating the incident stray light and achieving the purpose of eliminating stray light.

[0111] It can be understood that for the window unit 1300 shown in FIG. 13 , the external absorption rate A of the window unit 1300 EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT .

[0112] Similarly, when the window unit further includes an anti-reflective film, the window unit may also be composed of multiple substrates, which is not limited in this application.

[0113] Figure 14 is a schematic structural diagram of the fifth window unit 1400 provided in this application. As shown in Figure 14, window unit 1400 includes a substrate 1401, a prismatic film 1402, an optical film 1403, and a polarization module 1404. The descriptions of substrate 1401, prismatic film 1402, and optical film 1403 can be found in the corresponding sections of Figures 3, 9, or 10. The description of polarization module 1404 can be found in the corresponding sections of Figure 10 and will not be repeated here.

[0114] It is understandable that the polarization module 1404 is bonded to the second surface 14012 of the substrate 1401 by optically transparent adhesive.

[0115] It can also be understood that, in some embodiments, when the diaphragm film 1402 and / or the optical film 1403 are arranged on the outside of the second surface 14012 of the substrate 1401, the polarization module 1404 and the second surface 14012 of the substrate 1401 are adhered together through the diaphragm film 1402 and / or the optical film 1403 and the second surface 14012 of the substrate 1401.

[0116] It can be understood that for the window unit 1400 shown in FIG. 14 , the external absorption rate A of the window unit 1400 EXT and internal absorption rate A INT Also meets: A EXT ≥AINT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT At the same time, the external absorption rate A EXT The range of satisfaction: 60% ≤ A EXT ≤99%, internal reflectivity R INT The range of satisfaction: 10% ≤ R INT ≤60%.

[0117] For example, FIG15 is a schematic partial structural diagram of the second type of window unit provided by the present application with 39 film layers. It can be understood that FIG15 is a specific structure of the window unit 1400 shown in FIG14 above. As shown in FIG15 , in the film layers from the 31st to the 39th layer, the metal film Cr layer (including the 32nd and 36th layers) is arranged between two adjacent SiO2 layers, wherein the 31st, 33rd, 35th, 37th and 39th layers are SiO2, belonging to the above-mentioned spectroscopic film 1402, and the 34th and 38th layers are niobium pentoxide Nb2O5, belonging to the above-mentioned spectroscopic film 1402. When the thickness of each layer from the 31st to the 39th layer is set as shown in Table 2 above, and the polarizer in the polarization module 1404 adopts an iodine-based or fuel-washed polarizer, the external absorption rate A of the window unit shown in FIG15 EXT When the thickness of each layer from the 31st layer to the 39th layer is set as shown in Table 1 above, and the polarizer in the polarization module 1404 adopts an iodine-based or fuel-washed polarizer, the external absorption rate A of the window unit shown in FIG15 is about 80%. EXT About 90%.

[0118] Similarly, for the window unit 1400 , this application does not limit the number of substrates included in the window unit.

[0119] FIG16 is a schematic structural diagram of the sixth window unit 1600 provided in this application. As shown in FIG16(a), the window unit 1600 includes a substrate 1601, a diaphragm 1602, an optical film 1603, a polarization module 1604, and an anti-reflection film 1605. Compared with the window unit 1400 shown in FIG14, the window unit 1600 has an additional anti-reflection film 1605. The anti-reflection film 1605 is provided on the surface of the polarization module 1604 to eliminate stray light. The substrate 1601, the diaphragm 1602, the optical film 1603, and the polarization module 1604 can be described with reference to the corresponding parts in FIG14, and the anti-reflection film 1605 can be described with reference to the corresponding parts in FIG13, which will not be repeated here.

[0120] It is understandable that the anti-reflection film 1605 can be disposed on the surface of the polarization module 1604 by processes such as PVD, CVD, ALD, sputtering, or wet coating.

[0121] It is understood that the present application does not limit the number of substrates included in the window unit. For example, as shown in (b) of Figure 16, the window unit 1600 may also include a substrate 1601, a diaphragm 1602, an optical film 1603, a polarizing module 1604, a substrate 1606, and an anti-reflection film 1605. Compared with (a) of Figure 16, the window unit 1600 shown in (b) of Figure 16 has two substrates. Among them, the substrate 1601, the diaphragm 1602, the optical film 1603, the polarizing module 1604, and the anti-reflection film 1605 can refer to the corresponding description of (a) of Figure 16, and the substrate 1606 can refer to the description of the substrate 1601, and will not be repeated here.

[0122] It can be understood that for the window unit 1600 shown in FIG. 16 , the external absorption rate A of the window unit 1600 EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT .

[0123] FIG17 is a schematic structural diagram of the seventh window unit 1700 provided in this application. As shown in FIG17 , the window unit 1700 includes a substrate 1701, a spectroscopic film 1702, and an absorptive ND filter 1703. It is understood that the absorptive ND filter 1703 can be disposed on the first surface 17011 of the substrate 1701, as shown in FIG17 (a), or on the second surface 17012 of the substrate 1701, as shown in FIG17 (b), to eliminate stray light by absorbing it. The spectroscopic film 1702 is composed of at least one dielectric film. Specifically, as shown in FIG17 , the spectroscopic film 1702 includes a first dielectric film layer, a second dielectric film layer, a third dielectric film layer, ..., and an mth dielectric film layer, where m is an integer greater than or equal to 1. For other descriptions of the substrate 1701, the spectroscopic film 1702, and the absorptive ND filter 1703, please refer to the corresponding elements in the above embodiments. For example, the description of the substrate 901 , the prismatic film 902 and the absorptive ND filter 904 of the window unit 900 in FIG. 9 will not be repeated here.

[0124] It is understood that when an absorptive ND filter 1703 is disposed between the diaphragm 1702 and a surface of the substrate 1701 (the first surface 17011 or the second surface 17012), the diaphragm 1702 can be disposed on the absorptive ND filter 1703 by a process such as PVD, CVD, ALD, sputtering, or wet coating. In this case, the absorptive ND filter 1703 is used to absorb stray light transmitted from the diaphragm 1702 or to absorb stray light transmitted from the substrate 1701.

[0125] It can also be understood that Figure 17 is only an embodiment in which the window unit 1700 includes an absorptive ND filter 1703. In other embodiments, the window unit provided in the present application may also include two absorptive ND filters, and the two absorptive ND filters may be respectively arranged on the two surfaces of the substrate, which can further enhance the absorption effect of external stray light.

[0126] For the window unit 1700 shown in FIG17 , the external absorption rate A of the window unit 1700 EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT .

[0127] FIG18 is a schematic structural diagram of the eighth window unit 1800 provided in the present application. As shown in FIG18 , the window unit 1800 includes a substrate 1801, a diaphragm 1802, an absorptive ND filter 1803, and a polarization module 1804. Compared with the window unit 1700 shown in FIG17 , the window unit 1800 has an additional polarization module 1804. The polarization module 1804 is disposed on the second surface 18012 of the substrate 1801 and is used to eliminate stray light. The substrate 1801, the diaphragm 1802, and the absorptive ND filter 1803 can be respectively described with reference to the corresponding parts in FIG17 , which will not be repeated here. The polarization module 1804 can refer to the description in the above-mentioned embodiments, such as the polarization module 1005 in FIG10 , which will not be repeated here.

[0128] Optionally, the polarization module 1804 is adhered to the second surface 18012 of the substrate 1801 by optically transparent adhesive. The absorptive ND filter 1803 is adhered to the polarization module 1804 by optically transparent adhesive.

[0129] It is understandable that in some embodiments, when the prismatic film 1802 is disposed outside the second surface 18012 of the substrate 1801 , the polarization module 1804 and the second surface 18012 of the substrate 1801 are adhered together via the prismatic film 1802 .

[0130] It can be understood that for the window unit 1800 shown in FIG. 18 , the external absorption rate A of the window unit 1800 EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT .

[0131] FIG19 is a schematic structural diagram of the ninth window unit 1900 provided in the present application. As shown in FIG19 , the window unit 1900 includes a substrate 1901, a diaphragm 1902, an absorptive ND filter 1903, a polarization module 1904, and an anti-reflection film 1905. Compared to the window unit 1800 shown in FIG18 , the window unit 1900 has an additional anti-reflection film 1905. The anti-reflection film 1905 is disposed on the surface of the polarization module 1904 to eliminate stray light. The description of the substrate 1901, the diaphragm 1902, the absorptive ND filter 1903, and the polarization module 1904 can refer to the description of the corresponding parts in FIG18 . The description of the anti-reflection film 1905 can refer to the description in the above-mentioned embodiments, such as the description of the anti-reflection film 1306 in FIG13 , which will not be repeated here.

[0132] It is understood that the anti-reflection film 1905 can be provided on the surface of the absorptive ND filter 1903 by processes such as PVD, CVD, ALD, sputtering or wet coating.

[0133] It can be understood that for the window unit 1900 shown in FIG. 19 , the external absorption rate A of the window unit 1900 EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT .

[0134] Figure 20 is a schematic structural diagram of the tenth window unit 2000 provided in this application. As shown in Figure 20 , window unit 2000 includes a substrate 2001, a prismatic film 2002, and a polarization module 2003. The descriptions of substrate 2001 and prismatic film 2002 can be found in the corresponding sections of Figure 3 , respectively. The descriptions of polarization module 2003 can be found in the corresponding sections of Figure 10 , and will not be repeated here.

[0135] Optionally, the polarization module 2003 is bonded to the second surface 20012 of the substrate 2001 by optically transparent adhesive.

[0136] It is understandable that in some embodiments, when the prismatic film 2002 is disposed outside the second surface 20012 of the substrate 2001 , the polarization module 2003 and the second surface 20012 of the substrate 2001 are adhered together via the prismatic film 2002 .

[0137] It can be understood that for the window unit 2000 shown in FIG. 20 , the external absorption rate A of the window unit 2000 EXT and internal absorption rate A INT Also meets: A EXT ≥A INT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT .

[0138] FIG21 is a schematic structural diagram of the ninth window unit 2100 provided in this application. As shown in FIG21 , the window unit 2100 includes a substrate 2101, a prismatic film 2102, a polarizing module 2103, and an anti-reflection film 2104. Compared to the window unit 2000 shown in FIG20 , the window unit 2100 includes an anti-reflection film 2104. The anti-reflection film 2104 is disposed on the surface of the polarizing module 2103 to eliminate stray light. The descriptions of the substrate 2101, the prismatic film 2102, and the polarizing module 2103 can be found in the corresponding sections of FIG20 , and the descriptions of the anti-reflection film 2104 can be found in the corresponding sections of FIG13 , and will not be repeated here.

[0139] It is understandable that the anti-reflection film 2104 can be disposed on the surface of the polarization module 2103 by processes such as PVD, CVD, ALD, sputtering, or wet coating.

[0140] It can be understood that for the window unit 2100 shown in FIG. 21 , the external absorption rate A of the window unit 2100 EXT and internal absorption rate A INT Also meets: A EXT ≥AINT , the external reflectivity R of the window unit EXT and internal reflectivity R INT Also meets: R EXT ≤R INT .

[0141] FIG22 is a perspective view of a possible side structure of a display device 30 applicable to an embodiment of the present application. As shown in FIG22 , the display device 30 includes an image generating unit 310, a window unit 320, an image magnifying unit 330, and a first housing 340. The window unit 320 is any one of the above-mentioned embodiments, such as the window unit 1300 in FIG13 . The window unit 320 includes an outer surface 321 and an inner surface 322. One end of the first housing 340 is connected to the upper edge of the window unit 320, and the other end of the first housing 340 is connected to the lower edge of the window unit 320, so that the first housing 340 and the window unit 320 form a closed cavity, and the image generating unit 310 and the image magnifying unit 330 are arranged in the cavity. At the same time, the inner surface 322 of the window unit 320 is located in the cavity. Specifically, when the display device 30 is operating (which can be considered as the process of generating an image), the image generation unit 310 emits imaging light toward the inner surface 322 of the window unit 320. After reflecting from the inner surface 322 of the window unit 320, the imaging light is transmitted to the surface of the image magnification unit 330. After being reflected by the image magnification unit 330, it reaches the inner surface 322 of the window unit 320 again, transmits through the inner surface 322 of the window unit 320, and is emitted from the outer surface 321 of the window unit 320. When a user views an image through the outer surface 321 of the window unit 320, the image light emitted from the outer surface 321 of the window unit 320 enters the human eye, allowing the human eye to perceive a virtual image located at the image plane.

[0142] Optionally, the display device also includes a second shell, which is fixed to the four sides of the outer surface 321 of the window unit 320 by gluing or screwing. Electronic components such as buttons, indicator lights, microphones, etc. can also be set on the second shell to realize different functions of the display device 30.

[0143] It should be noted that the first housing 340 may be a complete housing, or the first housing 340 may be formed by connecting multiple partial housings, for example, connected together by decorative strips.

[0144] Optionally, the image generation unit 310 can adopt a liquid crystal display (LCD) display, a liquid crystal on silicon (LCOS) display, an organic light-emitting diode (OLED) display, a micro light-emitting diode (Micro-LED) display, a display using miniLED display technology, a digital light processing (DLP) display or a micro-electro-mechanical systems (MEMS) display, etc., which is not limited in this application.

[0145] Optionally, the image magnification unit 330 is a free-form mirror, or a non-free-form mirror, such as a spherical mirror, etc., which is not limited in this application.

[0146] It should be noted that FIG22 is merely an example of a display device applicable to an embodiment of the display system of the present application, that is, the structure of the display device 30 applicable to an embodiment of the present application is not limited to the structure shown in FIG22. In other embodiments, the image generation unit 310 in the display device 30 may be arranged at other locations, or the image magnification unit 330 may be arranged at other locations. That is, the relative positional relationship between the image generation unit 310, the window unit 320, and the image magnification unit 330 is not limited in this application.

[0147] Figure 23 is a circuit diagram of a display device provided in an embodiment of the present application. As shown in Figure 23, the circuit in the display device mainly includes a host processor (host CPU) 1201, an external memory interface 1202, an internal memory 1203, an audio module 1204, a video module 1205, a power module 1206, a wireless communication module 1207, an I / O interface 1208, a video interface 1209, a display circuit 1210 and a modulator 1212, etc. Among them, the main processor 1201 and its peripheral components, such as the external memory interface 1202, the internal memory 1203, the audio module 1204, the video module 1205, the power module 1206, the wireless communication module 1207, the I / O interface 1208, the video interface 1209, and the display circuit 1210 can be connected via a bus. The main processor 1201 can be called a front-end processor.

[0148] In addition, the circuit diagrams shown in the embodiments of the present application do not constitute specific limitations on the display device. In other embodiments of the present application, the display device may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The components shown in the diagrams may be implemented in hardware, software, or a combination of software and hardware.

[0149] The main processor 1201 includes one or more processing units. For example, the main processor 1201 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processor (NPU). Different processing units may be independent devices or integrated into one or more processors.

[0150] The main processor 1201 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the main processor 1201 is a cache memory. This memory can store instructions or data that the main processor 1201 has just used or is reusing. If the main processor 1201 needs to use the instruction or data again, it can directly call it from the memory. This avoids repeated accesses, reduces the waiting time of the main processor 1201, and thus improves system efficiency.

[0151] In some embodiments, the display device may further include multiple input / output (I / O) interfaces 1208 connected to the main processor 1201. The interfaces 1208 may include an I2C (Inter-Integrated Circuit) interface, an I2S (Inter-Integrated Circuit Sound) interface, a PCM (Pulse Code Modulation) interface, a UART (Universal Asynchronous Receiver / Transmitter) interface, a MIPI (Mobile Industry Processor Interface) interface, a GPIO (General-Purpose Input / Output) interface, a SIM (Subscriber Identity Module) interface, and / or a USB (Universal Serial Bus) interface. The I / O interfaces 1208 may be connected to devices such as a mouse, touchpad, keyboard, camera, speaker, microphone, etc., as well as physical buttons on the display device (e.g., volume button, brightness adjustment button, power button, etc.).

[0152] The external memory interface 1202 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the display device. The external memory card communicates with the main processor 1201 through the external memory interface 1202 to implement data storage function.

[0153] The internal memory 1203 can be used to store computer executable program codes, which include instructions. The internal memory 1203 may include a program storage area and a data storage area. The program storage area may store an operating system, an application required for at least one function (such as a call function, a time setting function, etc.), etc. The data storage area may store data created during the use of the display device (such as a phone book, world time, etc.), etc. In addition, the internal memory 1203 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash memory (UFS), etc. The main processor 1201 executes various functional applications and data processing of the display device by running instructions stored in the internal memory 1203 and / or instructions stored in a memory provided in the main processor 1201.

[0154] The display device can implement audio functions such as music playback and calls through the audio module 1204 and the application processor.

[0155] The audio module 1204 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. The audio module 1204 can also be used to encode and decode audio signals, such as for playing or recording. In some embodiments, the audio module 1204 can be provided in the main processor 1201, or some functional modules of the audio module 1204 can be provided in the main processor 1201.

[0156] The video interface 1209 can receive external audio and video signals, which can specifically be a High Definition Multimedia Interface (HDMI), a Digital Visual Interface (DVI), a Video Graphics Array (VGA), a Display Port (DP), etc. The video interface 1209 can also output video. When the display device is used as an in-vehicle display, the video interface 1209 can receive speed signals and power signals input from peripheral devices, and can also receive external VR video signals. When the display device is in use, the video interface 1209 can receive video signals input from an external computer or terminal device.

[0157] The video module 1205 can decode the video input from the video interface 1209, for example, by performing H.264 decoding. The video module can also encode the video captured by the display device, for example, by performing H.264 encoding on the video captured by an external camera. Furthermore, the main processor 1201 can also decode the video input from the video interface 1209 and output the decoded image signal to the display circuit 1210.

[0158] The display circuit 1210 and modulator 1212 are used to display corresponding images. In this embodiment, the video interface 1209 receives an external video source signal, which the video module 1205 decodes and / or digitizes before outputting one or more image signals to the display circuit 1210. The display circuit 1210 drives the modulator 1212 based on the input image signal to image the incident polarized light and output image light. Furthermore, the main processor 1201 may also output one or more image signals to the display circuit 1210.

[0159] In this embodiment, the display circuit 1210 and the modulator 1212 are electronic components in the image generating unit, and the display circuit 1210 can be referred to as a driving circuit.

[0160] The power module 1206 is used to provide power to the main processor 1201 and the light source 1200 based on input power (e.g., direct current). The power module 1206 may include a rechargeable battery, which can provide power to the main processor 1201 and the light source 1200. Light emitted by the light source 1200 can be transmitted to the modulator 1212 for imaging, thereby forming an image light signal.

[0161] The wireless communication module 1207 enables the display device to communicate wirelessly with the outside world. It can provide wireless local area networks (WLAN) (such as Wireless Fidelity (Wi-Fi) networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), infrared technology (IR) and other wireless communication solutions. The wireless communication module 1207 can be one or more devices that integrate at least one communication processing module. The wireless communication module 1207 receives electromagnetic waves via an antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the main processor 1201. The wireless communication module 1207 can also receive signals to be sent from the main processor 1201, frequency modulate them, amplify them, and convert them into electromagnetic waves for radiation through the antenna.

[0162] In addition, in addition to being input through the video interface 1209, the video data decoded by the video module 1205 can also be received wirelessly through the wireless communication module 1207 or read from an external memory. For example, the display device can receive video data from a terminal device or an in-vehicle entertainment system through the wireless local area network in the vehicle, and the display device can also read audio and video data stored in an external memory.

[0163] The above-mentioned display device can be installed on a vehicle, please refer to Figure 24, which is a schematic diagram of a possible functional framework of a vehicle provided in an embodiment of the present application.

[0164] As shown in FIG24 , the functional framework of a vehicle may include various subsystems, such as the illustrated sensor system 12, a control system 14, one or more peripheral devices 16 (one of which is shown as an example), a power supply 18, a computer system 20, and an onboard display system 22. Optionally, the vehicle may also include other functional systems, such as an engine system that provides power for the vehicle, etc., which are not limited in this application.

[0165] The sensor system 12 may include a plurality of detection devices that sense the information being measured and convert the sensed information into electrical signals or other required information outputs according to certain rules. As shown in the figure, these detection devices may include a global positioning system (GPS), a vehicle speed sensor, an inertial measurement unit (IMU), a radar unit, a laser rangefinder, a camera, a wheel speed sensor, a steering sensor, a gear position sensor, or other components for automatic detection, etc., and this application does not limit them.

[0166] The control system 14 may include several components, such as a steering unit, a braking unit, a lighting system, an autonomous driving system, a map navigation system, a network timing system, and an obstacle avoidance system, as shown. Optionally, the control system 14 may also include components such as a throttle controller and an engine controller for controlling vehicle speed, although this application does not limit this.

[0167] The peripheral devices 16 may include several components, such as the communication system shown in the figure, a touch screen, a user interface, a microphone, and a speaker. The communication system is used to enable network communication between the vehicle and other devices. In practical applications, the communication system may utilize wireless communication technology or wired communication technology to enable network communication between the vehicle and other devices. Wired communication technology may involve communication between the vehicle and other devices via network cables or optical fibers.

[0168] Power supply 18 represents a system that provides electrical power or energy to the vehicle, and may include, but is not limited to, rechargeable lithium batteries or lead-acid batteries. In practical applications, one or more battery components in the power supply are used to provide electrical energy or energy for starting the vehicle. The type and material of the power supply are not limited in this application.

[0169] Several functions of the vehicle are controlled and implemented by a computer system 20. The computer system 20 may include one or more processors 2001 (a single processor is shown as an example) and a memory 2002 (also referred to as a storage device). In practical applications, the memory 2002 may be internal to the computer system 20 or external to the computer system 20, for example, as a cache in the vehicle, although this application does not limit this.

[0170] The processor 2001 may include one or more general-purpose processors, such as a graphics processing unit (GPU). The processor 2001 may be used to run relevant programs or instructions corresponding to the programs stored in the memory 2002 to implement corresponding functions of the vehicle.

[0171] The memory 2002 may include a volatile memory, such as RAM; the memory may also include a non-volatile memory, such as ROM, flash memory, HDD or solid-state drive SSD; the memory 2002 may also include a combination of the above types of memory. The memory 2002 can be used to store a set of program codes or instructions corresponding to the program codes, so that the processor 2001 can call the program codes or instructions stored in the memory 2002 to implement the corresponding functions of the vehicle. In the present application, the memory 2002 can store a set of program codes for vehicle control, and the processor 2001 can call the program codes to control the safe driving of the vehicle. How to achieve safe driving of the vehicle is described in detail below in this application.

[0172] Optionally, in addition to storing program code or instructions, memory 2002 may also store information such as road maps, driving routes, and sensor data. Computer system 20 may integrate with other components in the vehicle functional framework diagram, such as sensors and GPS in the sensor system, to implement relevant vehicle functions. For example, computer system 20 may control the vehicle's direction or speed based on data input from sensor system 12, although this application does not limit this.

[0173] The in-vehicle display system 22 may include several components, such as a controller and an in-vehicle display. The controller 222 is used to generate an image (e.g., an image of VR content) based on user instructions and send the image to the in-vehicle display for display. The in-vehicle display may include an image generation unit, a window unit, and an image magnification unit. Passengers can view the target image presented on the in-vehicle display through the window unit. The functions of some components in the in-vehicle display system may also be implemented by other subsystems of the vehicle. For example, the controller may also be a component of the control system.

[0174] FIG24 of this application shows four subsystems: sensor system 12, control system 14, computer system 20, and onboard display system 22. These subsystems are merely illustrative and not limiting. In practice, a vehicle may combine several components within the vehicle according to different functions, thereby obtaining subsystems with corresponding functions. In practice, a vehicle may include more or fewer systems or components, and this application does not limit this.

[0175] The above-mentioned means of transportation can be a car, a truck, a bus, a ship, an airplane, a helicopter, an RV, a train, etc., and the embodiments of the present application do not make any special limitations.

[0176] Figure 25 is a schematic functional block diagram of a mobile carrier 25 provided in an embodiment of the present application. The mobile carrier 25 may include a perception system 120, a display device 130, and a computing platform 150. The perception system 120 may include one or more sensors for sensing information about the environment surrounding the mobile carrier 25. For example, the perception system 120 may include a positioning system, which may be a global positioning system (GPS), a Beidou system or other positioning system, an inertial measurement unit (IMU), a laser radar, a millimeter-wave radar, an ultrasonic radar, and a camera.

[0177] Some or all functions of the mobile carrier 25 can be controlled by the computing platform 150. The computing platform 150 may include one or more processors, such as processors 151 to 15n (n is a positive integer). A processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as a field programmable gate array (FPGA). In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc. In addition, the computing platform 150 can also include a memory for storing instructions. Some or all of the processors 151 to 15n can call the instructions in the memory and execute the instructions to achieve the corresponding functions. Among them, the display device 130 in the cockpit is a display device suitable for the embodiment of the present application, such as the display device 30 in the above embodiment.

[0178] The mobile carrier in this application may include a road vehicle, a water vehicle, an air vehicle, or an entertainment device. For example, the mobile carrier may be a vehicle, which is a vehicle in a broad sense and may be a transportation vehicle (such as a commercial vehicle, a passenger car, a train, etc.), an amusement device, a toy vehicle, etc. The embodiments of this application do not specifically limit the type of vehicle. For another example, the mobile carrier may be a vehicle such as an airplane or a ship.

[0179] Unless otherwise defined, technical or scientific terms used herein shall have the same general meaning as those generally understood by persons having ordinary skills in the field to which this disclosure pertains. The foregoing is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc. made based on this application shall be included within the scope of protection of this application.

Claims

1. A window unit, characterized in that, Comprising a beam-splitting film, a substrate, and a first medium, The beam-splitting film is configured to reflect a first image light and transmit a second image light, the second image light being generated based on the first image light, the second image light transmitting from a first surface of the substrate to a second surface of the substrate, the first surface and the second surface being opposite to each other; The first medium is configured to eliminate stray light, the stray light transmitting from the second surface to the first surface.

2. The window unit according to claim 1, wherein The external absorption rate A of the window unit EXT and the internal absorption rate A INT satisfy: A EXT ≥A INT , the external reflectance R of the window unit EXT and the internal reflectance R INT satisfy: R EXT ≤R INT , where the external absorption rate A EXT is the absorption rate of the window unit for the stray light, and the internal absorption rate A INT is the absorption rate of the window unit for the second image light. The external reflectance R EXT is the reflectance of the window unit for the stray light, and the internal reflectance R INT is the reflectance of the window unit for the first image light.

3. The window unit according to claim 2, wherein The first medium is at least one optical thin film of a metal material, the optical thin film being disposed on the surface of the beam-splitting film or inside the beam-splitting film.

4. The window unit according to claim 3, wherein, The material of the optical thin film is metal chromium Cr or metal titanium Ti.

5. The window unit according to claim 3 or 4, wherein The external absorption rate A EXT has a range that satisfies: 40% ≤ A EXT ≤ 95%, and the internal reflectance R INT has a range that satisfies: 10% ≤ R INT ≤ 60%.

6. The window unit according to claim 3 or 4, characterized in that, The window unit further comprises a neutral density (ND) filter, the ND filter being disposed outside the first surface and / or the second surface, the ND filter being configured to eliminate the stray light.

7. The window unit according to claim 6, wherein The external absorption rate A EXT satisfies the range: 45% ≤ A EXT ≤ 99%, and the internal reflectance R INT satisfies the range: 10% ≤ R INT ≤ 60%.

8. The window unit according to claim 6, characterized in that, The window unit further comprises a polarization module, the polarization module comprising a plurality of polarization elements, the polarization module being disposed outside the second surface, configured to eliminate the stray light.

9. The window unit according to claim 3 or 4, characterized in that, The window unit further comprises a polarization module, the polarization module comprising a plurality of polarization elements, the polarization module being disposed outside the second surface, configured to eliminate the stray light.

10. The window unit according to claim 9, characterized in that, The external absorption rate A EXT satisfies the range: 60% ≤ A EXT ≤ 99%, and the internal reflectance R INT satisfies the range: 10% ≤ R INT ≤ 60%.

11. The window unit according to claim 3 or 4, characterized in that, The first medium is a neutral density (ND) filter, the ND filter being disposed on the first surface and / or outside the second surface, the ND filter being configured to eliminate the stray light.

12. The window unit according to claim 11, wherein The window unit further comprises a polarization module, the polarization module comprising a plurality of polarization elements, the polarization module being disposed outside the second surface, configured to eliminate the stray light.

13. The window unit according to claim 3 or 4, characterized in that, The first medium is a polarization module, the polarization module comprising a plurality of polarization elements, the polarization module being disposed outside the second surface, configured to eliminate the stray light.

14. The window unit according to any one of claims 1 to 13, characterized in that, The window unit further comprises an anti-reflection film, the anti-reflection film being disposed outside the second surface, configured to eliminate the stray light.

15. The window unit according to any one of claims 1 to 14, characterized in that, The reflectivity of the window unit to the stray light is less than 4%.

16. A display device, characterized in that, Comprising: An image generation unit, an image magnification unit, and the window unit according to any one of claims 1 to 15 above, wherein The image generation unit is configured to emit the first image light to the window unit; The window unit is further configured to enable a human eye to view a virtual image formed by the second image light through the window unit; The image magnification unit generates the second image light by reflecting the first image light from the window unit.

17. A cockpit system, characterized in that, Comprising the display device according to claim 16 above.

18. A vehicle, characterized in that, Comprising the display device according to claim 16 above or the cockpit system according to claim 17 above.

19. The vehicle according to claim 18, characterized in that, The display device is disposed at least at one of a headrest of a seat of the vehicle, a backrest of a seat of the vehicle, and an instrument panel of the vehicle.

Images