Display device of field of view display device of vehicle, related display device and method

Abstract

The present invention relates to a display device of a field of view display device of a vehicle, a related display device and a method. The scheme introduced here relates to a display device (100) for a vehicle (200). The display device (100) has a waveguide (205) and a display surface (210). The waveguide (205) has: a coupling-in structure (215) for coupling-in first light (220), the first light representing a first image generated by an image generating device (225); a guiding structure (230) for guiding at least one light component of the first light (220) through the waveguide; and a coupling-out structure (235) for coupling the light component out from the waveguide so as to enable a virtual representation (110) of the first image in a first representation area arranged away from the waveguide. The display surface (210) is arranged in or at the waveguide and is constructed to radiate second light (240) representing a second image so as to cause a real representation (115) of the second image on the display surface (210).

Description

Technical Field

[0001] The concept is based on a display device for a visual display unit of a vehicle or a method for operating the display device. Background Art

[0002] DE 10 2011 088 794 A1 describes a projection device and a method for projecting an image into the field of vision of a driver of a vehicle. Summary of the invention

[0003] Against this background, the solution presented here describes a display device for a visual display device of a vehicle, and also describes a visual display device, an information display device or a vehicle having a display device and a method for operating a display device. The measures listed in the further developments make it possible to advantageously improve and enhance the described device.

[0004] The advantage achieved with the proposed concept is that a display device of simple design is provided which enables a user to clearly display images both in the near range and in the far range.

[0005] A display device for a field of view display device for a vehicle has a waveguide and a display surface. The waveguide has: a coupling-in structure for coupling-in a first light, which represents a first image generated by an image generating device; a guiding structure for guiding at least one light component of the first light through the waveguide; and a coupling-out structure for coupling the light component out of the waveguide so that a virtual representation of the first image can be achieved in a first representation area arranged away from the waveguide. The display surface is arranged in or at the waveguide and is configured to radiate a second light representing a second image so as to cause a real representation of the second image on the display surface.

[0006] The field of view display device may be a so-called "head-up display" (abbreviated as "HUD (Head-up Display)"), which is designed to widen the field of view of the user of the vehicle in order to project information into the field of vision of the user. The virtual representation of the first image generated when using the display device introduced here can be perceived by the user as a distant view (Fernansicht). The image distance of the generated virtual first image can be infinite in this case. The second image can be perceived as a real representation because the second image is actually radiated by the display surface and therefore has a finite image distance. The second image can be generated, for example, using an image generating device, wherein the display surface can be a projection surface as follows: the projection surface radiates the second image generated by the image generating device onto the projection surface, or the display surface can be formed when using a display including a display surface, which generates the second image. The real representation of the second image can be perceived by the user in a second representation area, which represents a closer representation area than the first representation area. The real representation of the second image can therefore be perceived as a near view (Nahansicht), that is, at the place where the display surface is actually located. The content of the first image and the second image can be the same. However, the content of the first image may also differ from the content of the second image.The guiding structure may be shaped in order to guide the first light coupled into the coupling-in structure to the coupling-out structure.

[0007] The display device presented here advantageously allows the representation of a plurality of images in differently perceptible representation areas or at differently perceptible representation distances while using a small number of components.

[0008] The coupling-out structure and the display surface can overlap at least partially. This enables a space-saving layout of the components. In this way, it is also possible for the user to simultaneously and additionally or alternatively display the first image and the second image in a superimposed manner. According to the embodiment, the coupling-out structure can also be arranged in a manner distributed on the projection surface in a planar manner, for example, in a manner distributed on the entire surface of the projection surface.

[0009] The coupling-out structure can be arranged at least partially between the display surface and the coupling-in structure. Thus, in an embodiment, the coupling-in structure can be arranged outside the display area, wherein the light component can be guided to the display surface by means of the guide structure so as to be subsequently coupled out in the area before or after the display surface so as to enable an overlap of the display area. The light component can additionally or alternatively also be coupled out from a level below the display surface and additionally or alternatively from a level above the display surface, whereby an overlap of the display area can be avoided at least in sections or completely. For example, in this way, a virtual representation can be perceived at least partially below the real representation or above the real representation.

[0010] The display surface can be transparent to the light component coupled out by the coupling-out structure. Additionally or alternatively, the coupling-out structure can be transparent to the second light radiated by the display surface. Thus, the coupling-out structure and the display surface can be arranged successively or superimposed in any order without interfering with each other when radiating or coupling out the corresponding light. The image generating device can be arranged in any way to generate light, either directed onto the display surface or directed onto the coupling-out structure.

[0011] The display surface can be formed, for example, by a hologram in the outcoupling structure and additionally or alternatively by a scattering surface in the outcoupling structure. In this way, the display surface can be used as a projection surface that can radiate a second image along a defined direction when the second light generated by the image generating device is incident on the hologram and additionally or alternatively on the scattering surface.

[0012] The display device may also have an image generating device, which may be a projector. According to an embodiment, the image generating device may be movably formed and designed to emit the first light and the second light, wherein the display surface may be formed as a projection surface for the second light. For example, the image generating device may emit the second light onto the projection surface in a first setting and the first light onto the coupling-in structure in a second setting. Depending on the setting of the image generating device, either a virtual representation of the first image or a real representation of the second image may be produced.

[0013] Alternatively, the image generating device can also be designed to emit the first light and the second light, wherein the coupling-in structure can be designed in a switchable manner so that in a first switching state the first light is guided to the guiding structure and in a second switching state the second light is guided to the deflection element for deflecting the second light to the display surface in the form of a projection surface. In this way, an immovable image generating device can be used. The switchable coupling-in structure can be, for example, an optical element, for example a holographic optical element.

[0014] Alternatively, the image generating device can also be designed to emit the first light and the second light simultaneously, wherein for the second light the display surface can be formed as a projection surface.

[0015] For example, in this case the light cone of the image generating device can partially illuminate the projection surface and another part illuminate the coupling-in structure, so that simultaneously and additionally or alternatively superimposedly a virtual representation of the first image in the far range and a real representation of the second image in the near range can be brought about.

[0016] According to another embodiment, however, the image generating device can also be designed to emit the first light, wherein the display device can also have a display for generating the second light, the display comprising a display surface. Such a display can also be used to produce a realistic representation of the second image.

[0017] It is also advantageous if the display device has a device that is designed to detect and additionally or alternatively track the gaze direction of the user and additionally or alternatively detect and additionally or alternatively track the position of the user's head. The device may include a so-called "eye tracking" and additionally or alternatively "head tracking" device. In this way, at least the first light can be generated or deflected as a function of the user's gaze direction and additionally or alternatively as a function of the user's head position, for example in order to always track the virtual representation in the user's pupil.

[0018] A visual display device, an information display device or a vehicle has one of the display devices described above. Due to the display device, such a visual display device, an information display device or a vehicle can provide a user with both optically perceptible representations in the near range and optically perceptible representations in the far range.

[0019] Furthermore, a method for operating one of the above-described display devices is described, which method comprises a generation step in which a first image is generated using an image generation device in order to enable a virtual representation of the first image in a first representation area.

[0020] In the step of generating, the first image can be generated in that the image generating device is arranged in alignment with the coupling structure of the display device in order to enable a virtual representation of the first image in the first representation area.

[0021] In the generating step, the first image can be generated in the following manner: the image generating device is arranged in a manner aligned with the coupling input structure of the display device, wherein a second image is also generated when using the image generating device so as to simultaneously cause a realistic representation of the second image in the second representation area in the waveguide or at the waveguide.

[0022] However, the method may also have a movement step in which the image generating device is moved, wherein, using the image generating device, the second image is aligned with the projection surface of the display device in order to produce a realistic representation of the second image in the second representation area in or at the waveguide.

[0023] Alternatively, however, the method may also comprise a further generation step in which the second image is generated using a display comprising a display surface for generating the second light in order to bring about a realistic representation of the second image in the second representation area in or at the waveguide.

[0024] The method can be implemented, for example, in a control unit, for example, in the form of software or hardware or in a hybrid form consisting of software and hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] An exemplary embodiment of the solution presented here is shown in the drawings and is explained in more detail in the following description. In the drawings:

[0026] Figure 1 shows a schematic side view of a display device according to an embodiment;

[0027] Figure 2 shows a schematic cross-sectional illustration of a vehicle having a display device according to an embodiment;

[0028] Figures 3 to 7 Schematic cross-sectional views of display devices according to embodiments are respectively shown; and

[0029] Figure 8 A flow chart of a method for operating a display device according to an embodiment is shown. DETAILED DESCRIPTION

[0030] In the following description of advantageous exemplary embodiments of the present solution, identical or similar reference numerals are used for elements which are shown in different figures and act similarly, wherein a repeated description of these elements is omitted.

[0031] Figure 1 A schematic side view of a display device 100 according to an embodiment is shown.

[0032] The display device 100 is configured for use in a field of view display device, an information display device and / or a vehicle or at a field of view display device, an information display device and / or a vehicle. According to an embodiment, the display device 100 is part of a combined instrument in a passenger car, part of a transparent combined HUD (Combiner-HUD) with a graphic representation of a combined instrument, integrated in a center console of a vehicle with an information display without reading glasses, or implemented as a 3D display for an entertainment device or a household device.

[0033] The display device 100 is configured to couple in, guide, and couple out again first light representing a first image generated by the image generating device, so as to enable a virtual representation 110 of the first image in a first representation area 105 arranged remote from the display device 100. Furthermore, the display device 100 is configured to radiate second light representing a second image, so as to cause a real representation 115 of the second image on the display device 100.

[0034] For a user 120 of the display device 100, the first representation area 105 is to be understood as a far zone, which is, for example, at an infinite distance from the user 120. For the user 120, a real representation 115 of the second image is perceptible in a second representation area 125, which represents a closer and / or limited representation area than the first representation area 105. The real representation 115 of the second image therefore takes place in the near zone according to this exemplary embodiment.

[0035] In order to allow user 120 to perceive virtual representation 110 of the first image and real representation 115 of the second image, display device 100 is shaped so as to emit light that represents the images in the direction of user 120 .

[0036] Figure 2 2 shows a schematic cross-sectional view of a vehicle 200 with a display device 100 according to an exemplary embodiment. Figure 1 A display device 100 is described.

[0037] Merely by way of example, the display device 100 is arranged in or at the vehicle 200 according to this embodiment. In this case, the display device 100 is exemplarily part of a field of view display device of the vehicle 200. According to an alternative embodiment, the display device 100 is arranged in or at an information display device, which can be part of a household device, for example.

[0038] The display device 100 has a waveguide 205 and a display surface 210. The waveguide 205 has a coupling-in structure 215 for coupling-in first light 220, which represents a first image generated by an image generating device 225; a guide structure 230 for guiding at least one light component of the first light 220 through the waveguide 205; and a coupling-out structure 235 for coupling out the light component from the waveguide 205, so as to enable a virtual representation 110 of the first image in a first representation region arranged remote from the waveguide 205. For this purpose, the light component is coupled out by the coupling-out structure 235 in the direction of the user 120. The display surface 210 is arranged in or at the waveguide 205 and is configured to radiate second light 240 representing a second image, so as to cause a real representation 115 of the second image on the display surface 210. For this purpose, the second light 240 is radiated in the direction of the user 120.

[0039] According to this embodiment, the coupling-out structure 235 and the display surface 210 at least partially overlap. According to this embodiment, the coupling-out structure 235 is arranged in a manner distributed in a plane on the display surface 210, and according to this embodiment, it is arranged in a manner distributed on the entire surface of the display surface 210. According to an embodiment, the display surface 210 is shaped by a holographic plate and / or a scattering surface in the coupling-out structure 235. According to this embodiment, the coupling-out structure 235 is at least partially arranged between the display surface 210 and the coupling-in structure 215. According to this embodiment, the display surface 210 is transparent to the light component coupled out by the coupling-out structure 235, or the coupling-out structure 235 is transparent to the second light 240 radiated by the display surface 210.

[0040] According to this exemplary embodiment, the display device 100 further comprises an image generating device 225. According to this exemplary embodiment, the image generating device 225 is movably formed and designed to emit the first light 220 and the second light 240, wherein the display surface 210 is formed as a projection surface for the second light 240. For this purpose, the image generating device 225 is designed in a first setting to emit the second light 240 onto the projection surface and in a second setting to emit the first light 220 onto the coupling-in structure 215. Thus, according to this exemplary embodiment, depending on the setting of the image generating device 225, either a virtual representation 110 of the first image or a real representation 115 of the second image can be produced for the user 120. According to this exemplary embodiment, the coupling-in structure 215 is arranged at the end of the waveguide 205 facing away from the projection surface and / or on the waveguide surface of the waveguide 205 that is opposite to the projection surface.

[0041] Hereinafter, the details of the display device 100 are described more precisely once again:

[0042] Currently, so-called augmented reality head-up displays (ARHUD for short) are under development, which, in addition to the information currently displayed in the HUD (such as speed, traffic sign recognition), can also display image content (such as navigation instructions, ACC symbols) so that these image contents appear to be integrated into the driving scene. Furthermore, the number of products in the consumer goods field that can display or obtain 3D image content is increasing, such as 3D TV. What these applications have in common is the following requirement: to be able to display image content at different depth levels. Conventional displays only achieve clear imaging directly at the screen level. The HUD is designed in such a way that the image content is clearly displayed at a certain image distance. The same applies to so-called head-mounted displays (HMD for short), that is, visual display devices worn on the head.

[0043] Conventional displays generate real images at the display level. HUD generates virtual images at a predetermined image distance. With the aid of a waveguide 205 equipped with a coupling-in structure 215 and a coupling-out structure 235, a virtual image can be generated, the image distance of which is at infinity. According to an embodiment, the waveguide 205 is manufactured with high optical transparency. The display device 100 introduced here now advantageously realizes a combination of a waveguide 205 and a display technology with a limited image distance. This enables the illustration of content at a limited to infinite image distance. Furthermore, in the case of suitable superposition, intermediate distances can be generated in order to enhance the largest possible area of ​​the real world or to make the largest possible area of ​​the real world useful for the image content.

[0044] Light field displays usually achieve poor resolution when displaying large image distances, while in autostereoscopic approaches, adaptation and convergence can lead to visual conflicts for the user 120 .

[0045] The combination of a display surface 210 in the form of a display or a projection surface for real images with a small image distance and a waveguide 205 for virtual images at infinity, which has a coupling-in structure 215 and a coupling-out structure 235 , enables representation of contents in a arbitrarily variable representation area.

[0046] Advantageously, the display device 100 introduced here can achieve very good resolution even in the case of large image distances in this case, so that no visual conflict is formed at the user 120. In this case, the display device 100 can realize not only clear imaging of information in a certain image distance, but also advantageously clear imaging of information in an infinite image distance. The display device 100 can achieve an enhancement of the environment. The illustration of information in a larger image distance that can be achieved in this case can achieve faster adaptive adjustment of the eyes of the user 120, which is an important safety aspect. The illustration of information (such as speed, time) can also be realized in the case of visual defects such as elderly hyperopia without visual assistance. If the illustration level is not needed or makes the user 120 uncomfortable, the illustration level is turned off according to the embodiment when using the shutoff device of the display device 100. The existing display surface 210 or display system can be expanded quickly, simply and inexpensively by the introduced waveguide 205.

[0047] A waveguide 205 having a coupling-in structure 215 and a coupling-out structure 235 is used, which can also be referred to as a coupling-in surface and a coupling-out surface or as an input coupling structure and an output coupling structure (Ein-und Auskoppelstruktur). With the aid of an image generating device 225 in the form of a projector, the image content is projected onto the coupling-in surface. The coupling-in structure 215 converts the position of each light beam of the first light 220 into an angle. The angular range of all points is below the angle of total reflection (unterhalt), so that the first light 220 is reflected back and forth in the waveguide 215. The coupling-out structure 235 couples out a portion of the internally reflected light. Thus, imaging at infinity is achieved. According to this embodiment, the waveguide 205 is transparent and can also be used as a display surface 210. For this purpose, the surface of the waveguide 205 is shaped in a functional manner according to this embodiment, for example, with a holographic plate and / or a suitable scattering surface. According to an alternative embodiment, a display is placed before or after the waveguide 205 to illustrate the image content, such as in Figure 5 As described in . In both cases, the image position is directly on the waveguide 205. Therefore, the content can be clearly illustrated both on the waveguide 205 and at infinity (or at a very large distance). A sophisticated combination of illustration units can be used to create the impression that the image content is in an intermediate level, which can occur by additive superposition. Furthermore, according to this embodiment, the display device 100 has the following device: the device is configured to identify and / or track the gaze direction and / or head position of the user 120. The device can be a so-called "eye tracking" and / or "head tracking" unit. Alternatively, the display device 100 can be combined with such a device. In this way, the content can be dynamically adapted to the head position or gaze direction of the user 120, who can also be referred to as an observer. According to an embodiment, the display device 100 also has a computing device, which is configured to correctly calculate the position of objects with different image distances so that a correct illustration can be achieved. In this way, the system efficiency is improved, and a small eye box follows the user 120.

[0048] Unlike other display devices, in which the projection element is used as a projection surface on the one hand and as a waveguide on the other hand, wherein the coupling-out structure of the projection surface used as a waveguide is located at the edge of the projection surface and can be used to visually illustrate information to the driver, the coupling-out structure 235 is arranged at least partially in a planar distribution over the projection surface in the display device 100 presented here.

[0049] According to this embodiment, the projector is used for near and far views. For this purpose, in a second setting of the projector, the first image is coupled into the waveguide 205 via a coupling-in structure 215 in the form of an optical system, or in the first setting of the projector, the second image is projected directly onto the projection surface. According to this embodiment, the conversion takes place via a rotation of the projector, or according to an alternative embodiment, via an interposed optical element (e.g. a mirror). The maximum resolution is achieved in each case, but the illustrations 110, 115 are not simultaneously illustrated.

[0050] Figure 3 1 shows a schematic cross-sectional view of a display device 100 according to an embodiment. Figure 2 The display device 100 described in , differs in that the generating device 225 is shaped so as not to be movable.

[0051] According to this embodiment, the image generating device 225 is configured to emit a first light 220 and a second light 240, wherein the coupling-in structure 215 is configured in a switchable manner according to this embodiment, so that in a first switching state the first light 220 is guided to the guiding structure, and in a second switching state the second light 240 is guided to the deflection element 300 for deflecting the second light 240 to the display surface 210 formed as a projection surface. According to this embodiment, the switchable coupling-in structure 215 is formed as an optical element, according to this embodiment as a holographic optical element (abbreviated as "HOE"). According to this embodiment, the coupling-in structure 215 is either switched to be transparent, whereby the second light 240 can pass through the coupling-in structure 215 and run the projection surface. Or, the coupling-in structure 215 acts as an input coupling structure, so as to guide the first light 220 into the waveguide 205, whereby information is displayed in the far field. The maximum resolution is achieved in each case, but without simultaneous display. No movable parts are required.

[0052] According to an embodiment, the image generating device 225 and the coupling-in structure 215 are jointly controlled so that when the image generating device 225 emits the first light 220 , the coupling-in structure 215 occupies a first switching state, and when the image generating device 225 emits the second light 240 , the coupling-in structure 215 occupies a second switching state.

[0053] According to this exemplary embodiment, the deflection element 300 is in the form of a mirror which is arranged on the side of the waveguide 205 facing away from the generating device 225. The deflection element 300 is oriented in such a way as to deflect the second light 240 onto the projection surface.

[0054] Figure 4 1 shows a schematic cross-sectional view of a display device 100 according to an embodiment. Figure 3The display device 100 described in , differs in that the generating device 225 according to this embodiment is designed to emit the first light 220 and the second light 240 simultaneously.

[0055] According to this exemplary embodiment, the coupling-in structure 215 is shaped in a non-switchable manner. According to this exemplary embodiment, the display surface is shaped as a projection surface for the second light 240. According to this exemplary embodiment, the generating device 225 shaped as a projector partially illuminates the coupling-in structure 215 and partially illuminates the projection surface. As a result, information is simultaneously displayed in the near range and the far range with a respectively reduced image resolution.

[0056] Figure 5 1 shows a schematic cross-sectional view of a display device 100 according to an embodiment. Figure 3 The display device 100 described in , differs in that the display device 100 has a display 500 including a display surface 210 for generating the second light.

[0057] According to this exemplary embodiment, the display surface 210 is not designed as a projection surface. According to this exemplary embodiment, the image generating device 225 is designed to emit only the first light 220 to the coupling-in structure. According to this exemplary embodiment, the coupling-in structure is designed in a non-switchable manner.

[0058] The display device 100 introduced here realizes a combination of near view and far view when using a display 500. The display 500 is formed as a TFT display or an OLED display or a μLED display according to this embodiment, which is used for information illustration in the near zone (i.e. at the display level). According to this embodiment, a waveguide placed on the display 500 or a waveguide placed after the display 500 is used for the far zone. The waveguide is transparent according to this embodiment, so these areas, i.e. virtual illustrations and real illustrations, can be illustrated at the same time. The TFT display is illuminated via the waveguide according to the embodiment. Therefore, the display can be used as a display in the near zone, or switched to transparent so as to enable display in the far zone. The display unit 210 can be implemented transparently. In a combined application, for example, also with a transparent μLED or OLED display.

[0059] Figure 6 1 shows a schematic cross-sectional view of a display device 100 according to an embodiment. Figure 4The display device 100 described differs in that the coupling-out structure 235 is not arranged in a planar distribution on the display surface 210 according to this embodiment. The coupling-out structure 235 is arranged in a layer between the coupling-in structure and the display surface 210 according to this embodiment. The coupling-out structure 235 is arranged completely between the display surface 210 and the coupling-in structure 215 according to this embodiment. According to this embodiment, the generating device 225 is designed to generate the first light and the second light simultaneously, but without overlapping the image areas. The real image 115 and the virtual image 110 are therefore perceptibly arranged one above the other for the user.

[0060] Figure 7 1 shows a schematic cross-sectional view of a display device 100 according to an embodiment. Figure 4 The display device 100 described differs in that the coupling-out structure 235 is arranged according to this exemplary embodiment in such a way that it extends beyond the surface of the display surface 210. According to this exemplary embodiment, the coupling-out structure 235 extends further into the region between the display surface 210 and the coupling-in structure 215. The real representation 115 and the virtual representation 110 are thus perceptibly arranged in an overlapping manner for the user, wherein the lower section 700 of the virtual representation 110 according to this exemplary embodiment is perceptibly below the overlapping representations 110, 115.

[0061] According to an alternative embodiment, the coupling-out structure 235 additionally or alternatively extends further into a region beyond the display area 210 , wherein the upper section of the virtual representation 110 according to this alternative embodiment is perceptible above the superimposed representations 110 , 115 .

[0062] All of the display devices 110 are Figures 1 to 7 The variants described in can be operated in a reflective or transmissive manner, ie the projector is arranged either in front of or behind the display surface 210 or in front of or behind the entire display.

[0063] Figure 8 A flow chart of a method 800 for operating a display device according to an exemplary embodiment is shown. This may be a display device as described with reference to one of the preceding figures.

[0064] Method 800 has a step 805 of generating, in which a first image is generated using an image generating device in order to enable a virtual representation of the first image in a first representation area.

[0065] According to an embodiment, in step 805 of generating, the first image is generated by aligning the image generating device with the coupling structure of the display device so that a virtual representation of the first image can be realized in the first representation area. According to an embodiment, in this case, in step 805 of generating, the first image is generated by arranging the image generating device in a manner aligned with the coupling structure of the display device, wherein when using the image generating device, a second image is also generated in order to simultaneously cause a real representation of the second image in the second representation area in or at the waveguide.

[0066] According to an alternative embodiment, the method 800 has a moving step 810, in which the image generating device is moved, wherein the second image is aligned with the projection surface of the display device using the image generating device in order to produce a realistic representation of the second image in the second representation area in the waveguide or at the waveguide.

[0067] According to an alternative embodiment, the method 800 has a further generating step 815 in which a second image is generated using a display comprising a display surface for generating second light in order to produce a realistic representation of the second image in the second representation area in or at the waveguide.

[0068] Steps 805 and 815 may be performed simultaneously.

[0069] If an exemplary embodiment includes an “and / or” connection between a first feature and a second feature, this is to be understood as meaning that the exemplary embodiment has both the first feature and the second feature according to one embodiment and has either only the first feature or only the second feature according to another embodiment.

Claims

1. A display device (100) for a field of view display device of a vehicle (200), wherein the display device (100) comprises: An image generating device (225), A waveguide (205), the waveguide (205) having: a coupling-in structure (215) for coupling-in first light (220), the first light (220) representing a first image generated by the image generating device (225); a guiding structure (230) for guiding at least one light component of the first light (220) through the waveguide (205); and a coupling-out structure (235) for coupling the light component out of the waveguide (205), so as to enable a virtual representation (110) of the first image in a first representation area (105) arranged away from the waveguide (205), and a display surface (210) arranged in or at the waveguide (205), the display surface (210) being configured to radiate second light (240) representing a second image in order to cause a realistic representation (115) of the second image on the display surface (210), in: The image generating device (225) is movably shaped and constructed to emit the first light (220) and the second light (240), wherein the display surface (210) is shaped as a projection surface for the second light (240), or the image generating device (225) is constructed to emit the first light (220) and the second light (240), wherein the coupling-in structure (215) is constructed in a switchable manner so as to guide the first light (220) to the guide structure (230) in a first switching state and guide the second light (240) to the deflection element (300) in a second switching state for deflecting the second light (240) to the display surface (210) shaped as a projection surface, or the image generating device (225) is constructed to emit the first light (220) and the second light (240) simultaneously, wherein the display surface (210) is shaped as a projection surface for the second light (240), or The image generating device (225) is configured to emit the first light (220), and the display device (100) has a display (500) comprising the display surface (210) for generating the second light (240).

2. The display device (100) according to claim 1, wherein: The coupling-out structure (235) and the display surface (210) at least partially overlap.

3. The display device (100) according to claim 1 or 2, wherein: The coupling-out structure (235) is arranged at least partially between the display surface (210) and the coupling-in structure (215).

4. The display device (100) according to claim 1 or 2, wherein: The display surface (210) is transparent to the light component coupled out by the coupling-out structure (235), and / or the coupling-out structure (235) is transparent to the second light (240) radiated by the display surface (210).

5. The display device (100) according to claim 1 or 2, wherein: The display surface (210) is shaped by a holographic plate and / or a scattering surface in the outcoupling structure (235).

6. The display device (100) according to claim 1 or 2, comprising a device configured to recognize and / or track a user's gaze direction and / or head position.

7. A field of view display device comprising a display apparatus (100) according to any one of the preceding claims.

8. An information display device comprising the display apparatus (100) according to any one of claims 1 to 6.

9. A vehicle (200) comprising a display device (100) according to any one of claims 1 to 6.

10. A method (800) for operating a display device (100) according to any one of claims 1 to 6, wherein: The method (800) comprises the following steps: Using an image generating device (225), a first image is generated (805) in order to enable a virtual representation (110) of the first image in a first representation area (105).

Images