VEHICLE WITH HOLOGRAPHIC FILM

Description

[0001] The present invention relates to a vehicle, in particular a rail vehicle or road vehicle, having a wall surface or a window pane, an image generation unit, a holographic film applied to the wall surface or the window pane and a computer, wherein the image generation unit is operatively connected to the computer in such a way that the image generation unit receives a control signal from the computer during operation of the vehicle, wherein the image generation unit, the holographic film and the computer are set up and arranged in such a way that information which is visually perceptible to an observer is generated during operation of the vehicle.

[0002] In practice, the walls and windows of public rail or road vehicles have little additional use beyond their inherent function as wall or window enclosures. It is well known that such walls and windows are used, at most, as advertising space for pasted-on posters.

[0003] US 4,818,048 A discloses a holographic head-up display for displaying a control panel on the windshield of a vehicle and for displaying the driver's manual movements and manual selections on the control panel. The display comprises a number of edge-illuminated hologram layers providing a background display, as well as touch and activation indicators. Signals from the control panel selectively illuminate the respective layers and portions thereof in response to operations on the control panel to produce a windshield display. In a second embodiment, a virtual head-up background display is provided by a first hologram, and points indicating the driver's finger position on the control panel are positioned by selectively illuminating a second hologram on the background display.

[0004] CN 104 575 337 A discloses a subway glass wall advertising system with human body perception, comprising a holographic projection film, a computer host, an advertising game controller, a projector, and a sound box. The holographic projection film is adhered to the outer surface of the subway glass wall. The computer host is located in a subway car, and advertising videos are stored inside the computer host. The advertising game controller, the projector, and the sound box are located at the top of the subway glass wall. The advertising game controller includes an MSP430 single-chip microcomputer, a power supply battery, a quartz oscillation circuit module, a reset circuit module, and a USB (Universal Serial Bus) communication circuit module. The power supply battery supplies power to each power consumption module in the advertising game controller.The quartz oscillation circuit module, reset circuit module, and USB communication circuit module are connected to the MSP430 single-chip microcomputer. The USB communication circuit module is connected to a USB interface of the mainframe computer via a USB data line. The input end of the MSP430 single-chip microcomputer is connected to an infrared body sensor, which is used to detect when a person is near the subway glass wall. The subway glass wall display system that detects the human body has the advantage of improving resource utilization and display.

[0005] DE 42 11 728 A1 discloses a holographic display device on a viewing window with one or more laser or luminescence diodes coupled to the viewing window, one or more monomode optical waveguides integrated into the viewing window and one or more integrated holographic output gratings which output light from the monomode optical waveguide and reflect it into a field of view that can be perceived by an operator looking at the viewing window.

[0006] Against this background, it is an object of the present invention to expand the use of a wall surface or window pane of a vehicle, such as a rail or road vehicle, in particular to enable an adaptive or interactive display of information on these surfaces.

[0007] This object is achieved according to the invention by a vehicle, in particular a rail vehicle or road vehicle, having a wall surface or window pane, an image generation unit for generating an image, a holographic foil applied to the wall surface or window pane, a computer and a sensor, wherein the image generation unit is effectively connected to the computer such that the image generation unit receives a control signal from the computer during operation of the vehicle, wherein the image generation unit, the holographic foil and the computer are set up and arranged such that during operation of the vehicle, information visually perceptible to an observer is generated, wherein the sensor is effectively connected to the computer such that the computer receives a measurement signal from the sensor during operation of the vehicle, and wherein the computer is set up such thatthat, during operation of the vehicle, it changes the control command transmitted to the image generation unit depending on the measurement signal, so that the image generated by the image generation unit and, consequently, the visually perceivable information are adapted to the measurement signal. According to the invention, the holographic film comprises a plurality of optical waveguides structured in the holographic film, wherein the holographic film has a first grating structure for coupling out light from the plurality of optical waveguides. The image generation unit and the holographic film are configured and arranged such that, during operation of the vehicle, light generated by the image generation unit is guided within a transport plane through the plurality of optical waveguides of the holographic film and is coupled out of the holographic film by means of the first grating structure.so that the coupled-out light generates a projection comprising a plurality of pixels, which comprises the visually perceptible information, and wherein the image generation unit and the holographic foil are designed and arranged relative to one another in such a way that a light generated by the image generation unit is coupled into the plurality of optical waveguides via one or more light cones perpendicular to the transport plane.

[0008] Such a vehicle makes it possible to display information for vehicle operators or passengers on many different surfaces, thus facilitating operation and generally improving the user experience. This is particularly advantageous when the holographic film is applied to a window of the vehicle. For example, a passenger on a rail vehicle can use the nearest window from their seat to obtain information or interact. For example, a holographic film applied to this window can display information about the weather conditions at a travel destination, news updates, interactive ticketing, or interactive entertainment and online shopping options.

[0009] In one embodiment of the vehicle according to the invention, the image generation unit and the holographic foil are designed and arranged such that the image generated by the image generation unit is coupled into the holographic foil. The resulting structural separation of the image generation unit and the holographic foil enables simple maintenance and repair work. In particular, the image generation unit and the holographic foil can be replaced independently of one another.

[0010] In one embodiment of the vehicle according to the invention, the holographic film is designed and arranged such that the visually perceptible information is extracted from the holographic film and is then directly perceptible to the user of the vehicle during normal use of the vehicle, in particular without the extracted light having to be reflected again in order to become perceptible to the user during normal use of the vehicle. This is advantageous, for example, for holographic films that are applied directly to a vehicle window.

[0011] In one embodiment of the vehicle according to the invention, the holographic foil is formed by a film made of a polymer material.

[0012] According to the invention, the holographic film has a plurality of optical waveguides structured in the holographic film, wherein the holographic film has a first grating structure for coupling out light from the plurality of optical waveguides, wherein the image generation unit and the holographic film are set up and arranged such that, during operation of the vehicle, light generated by the image generation unit is guided within a transport plane through the plurality of optical waveguides of the holographic film and is coupled out of the holographic film by means of the first grating structure, such that the coupled-out light generates a projection having a plurality of pixels which comprises the visually perceivable information. The holographic film used here with a plurality of optical waveguides can be attached particularly easily and flexibly to existing wall surfaces or window panes of vehicles.

[0013] In one embodiment of the vehicle according to the invention, the first grating structure comprises a volume Bragg grating. Such gratings advantageously enable the coupling out of light from multiple optical fibers.

[0014] In one embodiment of the vehicle according to the invention, the first grating structure comprises a multiplexed volume Bragg grating. This further increases the potential complexity of the projection that can be displayed using the holographic foil.

[0015] In one embodiment of the vehicle according to the invention, the first grating structure is designed such that the light guided through the plurality of optical waveguides of the holographic film is coupled out of the plurality of optical waveguides within light cones substantially perpendicular to the transport plane. This represents a particularly simple and therefore cost-effective geometric arrangement of the light transported within the holographic film and emerging from the holographic film.

[0016] In one embodiment of the vehicle according to the invention, the holographic film has a second grating structure, wherein the image generation unit and the holographic film are configured and arranged such that, during operation of the vehicle, the light generated by the image generation unit is coupled into the plurality of optical fibers by means of the second grating structure. Such coupling allows the image generation unit and the holographic film to be designed and arranged in a particularly space-saving manner.

[0017] In one embodiment of the vehicle according to the invention, the first grating structure is arranged at a distance from the second grating structure. The light is thus coupled into the plurality of optical waveguides at a first position on the holographic foil, then guided within the transport plane to a second position spaced from the first position, and subsequently coupled out of the plurality of optical waveguides at the second position to generate the projection.

[0018] In one embodiment of the vehicle according to the invention, the second grating structure comprises a volume Bragg grating. Such gratings advantageously enable the coupling of light into multiple optical fibers.

[0019] In one embodiment of the vehicle according to the invention, the second grating structure comprises a multiplexed volume Bragg grating. This also allows the potential complexity of the projection that can be displayed using the holographic foil to be further increased.

[0020] According to the invention, the image generation unit and the holographic foil are designed and arranged relative to one another in such a way that light generated by the image generation unit is coupled into the plurality of optical waveguides via one or more light cones perpendicular to the transport plane. This enables a particularly simple-to-produce geometric arrangement of coupled-in, transported, and extracted light, in which the light to be coupled in falls onto a rear side of the holographic foil, is coupled in, and transported perpendicular to the angle of incidence of the light to be coupled in within the optical waveguides of the holographic foil, and is then extracted at an extraction point on the front side of the holographic foil, spaced apart from the extraction point.

[0021] In one embodiment of the vehicle according to the invention, the sensor is selected from a group consisting of a contactless motion sensor, a contactless field of view detection sensor, a radar, a lidar, a touch sensor, a mechanical button, a mechanical switch, a capacitive sensor, an inductive sensor, an optical camera, and a time-of-flight camera. It has been shown that one or more of these sensors, in conjunction with one another, are particularly suitable for enabling the most error-free interaction between a user and the holographic foil.

[0022] In one embodiment of the vehicle according to the invention, the sensor is at least partially integrated into the holographic foil. This saves space, and for remote sensing sensors such as radar or lidar sensors, it ensures that the spatial area covered by the sensor is located in close proximity to the holographic foil. This reduces the risk, for example, that a person's accidental movement could lead to an unintended sensor response.

[0023] In one embodiment of the vehicle according to the invention, the computer and the image generation unit are configured such that no light or only light with a low intensity is output from one or more sub-areas of the holographic film, depending on the measurement signal detected by the sensor. This property is particularly advantageous when areas of the holographic film are temporarily obscured during vehicle operation, so that only a portion of the holographic film can be used to display information. This allows for an adaptive response to obscuring the holographic film. In particular, this ensures that the full information content of the holographic film always remains visible, even if only on a reduced portion of the holographic film.

[0024] In one embodiment of the vehicle according to the invention, the sensor is designed and arranged such that, during operation of the vehicle, it detects a relative movement of the holographic foil with respect to a floor surface of the vehicle, wherein the computer is configured such that, during operation of the vehicle, it adapts a position of the visually perceptible information relative to the holographic foil depending on the detected relative movement. This reference to the floor surface represents a particularly simple and cost-effective way of determining the degree of concealment of a holographic foil. If, for example, the geometry of two temporarily concealing wall sections of a gangway between two carriages of a rail vehicle is known, the degree of concealment of a holographic foil applied to one of the two wall sections can be determined solely based on the relative positioning of the sensor to the floor surface.

[0025] In one embodiment of the vehicle according to the invention, the holographic foil is arranged on a side wall of a transition system between two movably connected carriages of the vehicle. The advantages of the holographic foil can be very effectively utilized in such a transition system, so that the relative mobility of the side walls has no or no significant influence on the information reproduction realized by means of the holographic foil.

[0026] In one embodiment of the vehicle according to the invention, the side wall is made up of several parts, wherein when the transition system is pivoted, a first side wall part is displaced relative to a second side wall part in such a way that the first side wall part covers the second side wall part, wherein the holographic film is arranged on the second side wall part, wherein the sensor is designed and arranged in such a way that it detects a degree of coverage of the second side wall part by the first side wall part during operation of the vehicle and wherein the computer is set up in such a way that it adapts a position of the visually perceivable information relative to the holographic film as a function of the degree of coverage during operation of the vehicle.

[0027] In one embodiment of the vehicle according to the invention, the computer is configured to adjust the position of the visually perceptible information relative to the holographic foil during vehicle operation such that the visually perceptible information is emitted entirely on the area of ​​the holographic foil not obscured by the first side wall part, or on a partial area thereof. This ensures that the viewer always receives the full information content of the projection, regardless of the degree of obscuration.

[0028] In one embodiment of the vehicle according to the invention, the sensor is designed such that it detects a movement, wherein the computer is set up such that, depending on a movement detected by the sensor, the light emitted by the image generation unit is adapted so that the visually perceptible information is not reproduced in a distorted manner due to the detected movement.

[0029] In one embodiment of the vehicle according to the invention, the computer is configured such that the visually perceptible information enables the viewer to purchase a ticket, with a plurality of options being selectable by the viewer, and with the computer and sensor together being configured such that they detect the viewer's selection during vehicle operation. A ticket machine implemented in this way can be adapted as desired and particularly easily to changing circumstances, such as price changes. For the purposes of the present invention, a ticket is understood to mean, in particular, a digital ticket.

[0030] In one embodiment of the vehicle according to the invention, the computer can be configured in particular such that a user of the holographic foil can make a digital payment by interacting with the holographic foil.

[0031] In one embodiment of the vehicle according to the invention, the holographic film is arranged on a window pane, in particular on a window pane in the driver's cab of the vehicle, wherein the computer is configured such that the visually perceivable information comprises at least one operating state of the vehicle, wherein the sensor is designed and arranged such that it detects a field of vision of the observer during operation of the vehicle, and wherein the computer is configured such that, during operation of the device, it adapts the position of the visually perceivable information relative to the holographic film depending on the detected field of vision. This can significantly increase the attention of a person using or driving the vehicle for operationally critical states.

[0032] In one embodiment of the vehicle according to the invention, the computer is configured such that, during operation of the device, the visually perceptible information is always emitted within the viewer's captured field of vision. This makes driving easier for the driver, as they no longer need to actively perform a body movement, particularly a head movement, to perceive the information. Rather, the information reproduction adapts adaptively to the driver's body or head movements.

[0033] In one embodiment of the vehicle according to the invention, the holographic film is arranged on a windshield of the vehicle. Particularly when driving the vehicle requires a substantially uninterrupted view out of the windshield, such an arrangement of the holographic film is advantageous, as it enables information to be displayed without the driver having to look away from the windshield.

[0034] In one embodiment of the vehicle according to the invention, the sensor is designed and / or the computer is configured such that a dangerous situation can be detected. The computer is configured such that the visually perceptible information contains an optical stimulus that directs the observer's gaze in a predefined direction when a dangerous situation is detected. This reduces the risk that a dangerous situation is not detected or not detected in a timely manner.

[0035] In one embodiment of the vehicle according to the invention, the computer is configured to adapt the information displayed via the holographic film to the user inputs detected via the holographic film. Such interactivity of the holographic film increases the possible uses of the holographic film.

[0036] In one embodiment of the vehicle according to the invention, the computer is configured to adjust the contrast and / or brightness of the visually perceivable information depending on a user input captured via the holographic foil. This configuration is particularly advantageous for vehicles, since the ambient brightness of vehicles can constantly change.

[0037] In one embodiment of the vehicle according to the invention, the sensor is designed to detect ambient brightness, and the computer is configured to adjust the brightness of the visually perceptible information depending on the ambient brightness. The adjustment can thus be made such that when the ambient brightness dims, the brightness of the visually perceptible information is also dimmed, and when the ambient brightness brightens, the brightness of the visually perceptible information is also brightened, so that visibility is always ensured in a way that is easy on the eyes.

[0038] In one embodiment of the vehicle according to the invention, the vehicle comprises a darkening device, wherein the darkening device is designed and arranged such that the area forming the background of the holographic film can be darkened. This ensures or improves visibility in conditions of strong brightness, e.g., direct sunlight. Such a darkening device can be integrated, in particular, into a window pane if the holographic film is applied to a window pane.

[0039] In one embodiment of the vehicle according to the invention, the holographic film is applied to a surface of the window pane arranged in the interior of the vehicle, wherein the window pane is designed as a partially reflective window pane, so that a human observer outside the vehicle cannot essentially see through the window pane into the interior of the vehicle, but a human observer inside the vehicle can see out through the window pane. This advantageously ensures that the data retrieved or provided by a user via the holographic film cannot be unlawfully intercepted by a third party outside the vehicle.

[0040] In one embodiment of the vehicle according to the invention, the sensor is configured to detect ambient brightness, and the computer and the darkening device are configured and coupled in such a way that the area forming the background of the holographic film is darkened when the ambient brightness exceeds a predetermined threshold. Visibility is thus ensured without the viewer or user of the holographic film having to take any action.

[0041] Further features, advantages, and embodiments of the present invention are described with reference to the following figures. They show: Fig. 1: a transparent frontal view of a window pane of a first embodiment of the vehicle according to the invention, wherein a holographic film is applied to the window pane, Fig. 2A: a cross-sectional view of the Fig. 1 shown window pane with holographic foil, Fig. 2B: a cross-sectional view of a wall element belonging to a second embodiment of the vehicle according to the invention, Fig. 3A: a front view of a wall surface of a third embodiment of the vehicle according to the invention in a partially concealed state, Fig. 3B: the wall surface according to Fig. 3A , wherein the holographic foil is in a state adapted to the concealed state.

[0042] Fig. 1 shows a window pane 10 of a vehicle according to a first embodiment with a window pane surface 1 directed towards the interior of the vehicle, wherein a holographic film 2 is applied to the window pane 10, more precisely to the window pane surface 1. The Fig. 1 is a frontal view, with the holographic foil 2 and the window pane 10 shown transparent.

[0043] A plurality of sensors 3 are arranged within the window pane. In the embodiment shown here, the sensors 3 are arranged in a grid-like manner over the areas of the window pane covered by the holographic foil. As can be seen from Fig. 1 As can be seen, the distance between two horizontally spaced sensors 3 corresponds to the distance between two vertically spaced sensors 3.

[0044] However, the horizontal and vertical distances between the sensors 3 can also differ according to alternative embodiments. Non-grid-like arrangements of the sensors 3 are also conceivable. The arrangement of the sensors 3 can, in particular, be designed such that the measured values ​​recorded by the sensors 3 exhibit the smallest possible statistical error.

[0045] Fig. 2A shows how the sensors 3 are arranged within the window pane 10. Due to this integration into the window pane 10, the sensors 3 are protected from external weather influences.

[0046] The sensors 3 can be radar sensors, for example. A radar sensor has an emitter for emitting electromagnetic radiation in the radio frequency range or a receiver for detecting electromagnetic radiation in the radio frequency range. A radar sensor can also have both an emitter and a receiver. The emitter can also be the receiver at the same time.

[0047] For example, RADAR sensors that comply with the Fig. 1 and Fig. 2 are arranged, for example, hand movements of a user of the holographic film 2 are measured and the corresponding measurement data is passed on to the computer. The computer can then calculate which intention of the user is most likely related to the measured hand movement. From this, the computer can derive a consequence for the visually perceptible information to be displayed via the holographic film 2, so that the information adapts interactively to the user's hand movement. For example, a ticket can be purchased using the holographic film 2, with the user entering inputs simply by means of hand movements. Alternatively, the holographic film 2 can also be used to offer the user different entertainment programs from which the user can select using a corresponding hand movement. The hand movement can, for example, consist of tapping or swiping.

[0048] In the Figuren 1 and 2A According to an alternative embodiment, the embodiment shown may also be a wall element 12 with a wall surface 13 instead of a window pane 10 with a window pane surface 1.

[0049] Fig. 2B shows a further alternative embodiment in which the holographic film is applied to a wall surface 13 of a wall element 12 of the vehicle and wherein the sensors are not mounted within the wall element 12, as in the first embodiment, but rather on the rear wall surface 11 opposite the wall surface 13. The sensors are thus not visible to the user of the holographic film when using the holographic film 2. This embodiment is particularly suitable in cases where existing wall elements 12, which do not yet have sensors 3, are to be retrofitted with corresponding sensors 3.

[0050] In the Figur 2B According to an alternative embodiment, the embodiment shown may also be a window pane 10 with a window pane surface 1 instead of a wall element 12 with a wall surface 13.

[0051] Based on the Fig. 2A and Figure 2B also shows that the image generation unit 4 can be arranged very space-savingly on an edge surface of the holographic foil 2. In the embodiments shown here, the light emitted by the image generation unit 4 is coupled into the plurality of optical fibers of the holographic foil 2 at the upper edge. Depending on the desired display of information, the light is then transported to a corresponding position on the holographic foil 2 and there re-emitted by the holographic foil 2 toward the viewer, thus being decoupled.

[0052] The Fig. 3A and the Fig. 3B show a third embodiment in which a wall surface to which the holographic foil is applied is located on a second side wall part 5 of the vehicle, which is temporarily concealed by a first side wall part 6 during operation of the vehicle. The vehicle floor 100 is shown schematically by a line. Such a system with first and second side wall parts 6, 5 occurs, for example, in a transition system 101 between two car bodies of a rail vehicle. The transition system is shown in the Fig. 3A and 3B symbolically represented by an arrow.

[0053] Fig. 3A shows a holographic foil applied to the second side wall part 5, the two side wall parts 5, 6 being shown in a state in which the holographic foil 2 is concealed by the first side wall part 6 in an overlap section 7. The sensors 3 of this embodiment register the relative displacement of the second side wall part 5 to the first side wall part 6. The computer is then used to determine the degree of concealment of the holographic foil, i.e. it determines how large the overlap area 7 is and where it is located. Based on this, the computer calculates in which section 8 of the holographic foil the visually perceptible information should exclusively be displayed and adapts the light emitted by the image generation unit 4 to this using appropriate control commands.

[0054] The result of the adaptation carried out by the computer is in Fig. 3B The visually perceptible information is now only displayed in the cutout area 8, which is completely visible to the viewer. In the embodiment shown here, the cutout area 8 is not equal to the entire area of ​​the holographic film 2, which is not an overlap area 7. Rather, a buffer section is added to the overlap area 7, so that the visually perceptible information is not emitted directly at the edge of the concealing first side wall part 6, as this could otherwise lead to distortions in the projection. In other words, the overlap section 7 and the buffer section form a masked area 9, from which no light is emitted from the holographic film 2.

[0055] For the purposes of original disclosure, it is noted that all features as they become apparent to a person skilled in the art from the present description, the drawings, and the claims, even if they were specifically described only in conjunction with certain other features, can be combined both individually and in any combination with other features or groups of features disclosed herein, unless this has been expressly excluded or technical circumstances make such combinations impossible or pointless. A comprehensive, explicit presentation of all conceivable combinations of features is omitted here solely for the sake of brevity and readability of the description.

[0056] While the invention has been illustrated and described in detail in the drawings and the foregoing description, this illustration and description are given by way of example only and are not intended to limit the scope of the invention as defined by the claims. The invention is not limited to the disclosed embodiments.

[0057] Modifications of the disclosed embodiments will be apparent to those skilled in the art from the drawings, the description, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain features are claimed in different claims does not exclude their combination. Reference signs in the claims are not intended to limit the scope of protection. Bezugszeichen

[0058] 1Window surface 2Holographic foil 3Sensor 4Image generation unit 5Second side wall part 6First side wall part 7Overlap section 8Cutout area 9Hidden area 10Window 11Rear wall surface 12Wall element 13Wall surface 100Vehicle floor 101Transition section

Claims

1. Vehicle, in particular rail vehicle or road vehicle, comprising a wall surface (13) or window pane (10), an image-generating unit (4) for generating an image, a holographic foil (2) applied to the wall surface (13) or the window pane, a computer, and a sensor (3), the image-generating unit (4) being operatively connected to the computer such that, during operation of the vehicle, the image-generating unit (4) receives a control signal from the computer, the image-generating unit (4), the holographic foil (2) and the computer being configured and arranged such that, during operation of the vehicle, information which is visually perceptible to an observer is generated, the sensor (3) being operatively connected to the computer such that, during operation of the vehicle, the computer receives a measurement signal from the sensor (3), and the computer being configured such that, during operation of the vehicle, the computer changes the control command transmitted to the image-generating unit depending on the measurement signal so that the image generated by the image-generating unit and consequently the visual perceptible information are adjusted to the measurement signal, characterized in that the holographic foil (2) has a plurality of optical waveguides which are structured in the holographic foil (2), the holographic foil (2) having a first grating structure for coupling light out of the plurality of optical waveguides, the image-generating unit (4) and the holographic foil (2) being configured and arranged such that, during operation of the vehicle, light generated by the image-generating unit (4) is guided within a transport plane through the plurality of optical waveguides of the holographic foil (2) and is coupled out of the holographic foil (2) by means of the first grating structure so that the coupled-out light generates a projection which has a plurality of pixels and comprises the visually perceptible information, and the image-generating unit and the holographic foil being designed and arranged relative to one another such that a light generated by the image-generating unit is coupled into the plurality of optical waveguides via one or more light cones which are perpendicular to the transport plane.

2. Vehicle according to any of the preceding claims, wherein the holographic foil (2) is designed and arranged such that the visually perceptible information is coupled out of the holographic foil (2) and is then immediately perceptible to the user of the vehicle during normal use of the vehicle, in particular without the coupled-out light having to be reflected again in order to become perceptible to the user during normal use of the vehicle.

3. Vehicle according to any of the preceding claims, wherein the first grating structure is designed such that the light guided through the plurality of optical waveguides of the holographic foil (2) is coupled out of the plurality of optical waveguides within light cones which are substantially perpendicular to the transport plane.

4. Vehicle according to the preceding claim, wherein the holographic foil (2) has a second grating structure, wherein the image-generating unit (4) and the holographic foil (2) are configured and arranged such that, during operation of the vehicle, the light generated by the image-generating unit (4) is coupled into the plurality of optical waveguides by means of the second grating structure.

5. Vehicle according to any of the preceding claims, wherein the sensor (3) is selected from a group consisting of a non-contact motion sensor, a non-contact field of view detection means, a RADAR, a LIDAR, a touch sensor, a mechanical button, a mechanical switch, a capacitive sensor, an inductive sensor, an optical camera and a time-of-flight camera.

6. Vehicle according to any of the preceding claims, wherein the sensor (3) is at least partly integrated into the holographic foil (2).

7. Vehicle according to any of the preceding claims, wherein the computer and the image-generating unit (4) are configured such that no light or only light with a low intensity is coupled out of a portion or out of a plurality of portions of the holographic foil (2) depending on the measurement signal detected by the sensor (3).

8. Vehicle according to any of the preceding claims, wherein the sensor (3) is designed and arranged such that, during operation of the vehicle, the sensor detects a relative movement of the holographic foil (2) with respect to a floor surface of the vehicle, wherein the computer is configured such that, during operation of the vehicle, the computer adjusts a position of the visually perceptible information relative to the holographic foil (2) depending on the detected relative movement.

9. Vehicle according to any of the preceding claims, wherein the holographic foil (2) is arranged on a side wall of a transitional system between two movably connected carriages of the vehicle, wherein, according to a preferred variant, the side wall is in multiple parts and wherein, when the transitional system is pivoted, a first side wall part (5) is shunted with respect to a second side wall part (6) such that the first side wall part (5) covers the second side wall part (6), wherein the holographic foil (2) is arranged on the second side wall part (6), wherein the sensor (3) is designed and arranged such that, during operation of the vehicle, the sensor detects a degree to which the second side wall part (6) is covered by the first side wall part (5), and wherein the computer is configured such that, during operation of the vehicle, the computer adjusts a position of the visually perceptible information relative to the holographic foil (2) depending on the degree of covering, wherein, according to a particularly preferred variant, the computer is configured such that, during operation of the vehicle, the computer adjusts the position of the visually perceptible information relative to the holographic foil (2) such that the visually perceptible information is emitted entirely on the region of the holographic foil (2) not covered by the first side wall part (5) or on a portion thereof.

10. Vehicle according to any of the preceding claims, wherein the sensor (3) is designed such that it detects a movement, wherein the computer is configured such that, depending on a movement detected by the sensor (3), the light radiated by the image-generating unit (4) is adjusted so that the visually perceptible information is not reproduced in a distorted manner due to the detected movement.

11. Vehicle according to any of the preceding claims, wherein the computer is configured such that the visually perceptible information makes it possible for the observer to purchase a ticket, wherein a plurality of options can be selected by the observer, and wherein the computer and sensor (3) together are configured such that, during operation of the vehicle, they detect the observer's selection.

12. Vehicle according to any of the preceding claims, wherein the holographic foil (2) is arranged on a window pane, in particular on a window pane in the driver's cab of the vehicle, wherein the computer is configured such that the visually perceptible information comprises at least one operating state of the vehicle, wherein the sensor (3) is designed and arranged such that, during operation of the vehicle, the sensor detects the observer's field of view, and wherein the computer is configured such that, during operation of the device, the computer adjusts the position of the visually perceptible information relative to the holographic foil (2) depending on the detected field of view, wherein, according to a preferred variant, the computer is configured such that, during operation of the device, the visually perceptible information is always emitted in the observer's detected field of view.

13. Vehicle according to any of the preceding claims, wherein the sensor (3) is designed and / or the computer is configured such that a dangerous situation can be detected, wherein the computer is configured such that the visually perceptible information contains an optical stimulus which directs the observer's gaze in a predefined direction when a dangerous situation is detected.

14. Vehicle according to any of the preceding claims, wherein the computer is configured such that, depending on user inputs detected via the holographic foil (2), the computer adjusts the information displayed via the holographic foil (2) to the detected user inputs.