DE102021122464B4 - Method of setting a viewing area for a screen - Google Patents

Abstract

Method for setting a viewing area for a screen (2) of a vehicle, the viewing area being provided for a display content that is displayed on the screen (2), the screen (2) being provided for a passenger of the vehicle, in which a Position of at least one eye (6) of the passenger relative to the screen (2) and a position of at least one eye (10) of a driver of the vehicle relative to the screen (2) are determined, with at least one property of the field of vision depending on the position of the at least one eye (6) of the passenger and the at least one eye (10) of the driver is set, the display content being visible through an eye (6, 10) only if it is in the field of vision and is looking at the screen (2nd ) is directed.

Description

The invention relates to a method for setting a field of view for a screen and a system for setting a field of view for a screen.

The pamphlet DE 10 2009 008 492 A1 describes a display device of a motor vehicle for displaying image information as a function of a detected seating position of a driver.

A method for display control of different information in a motor vehicle and an opto-acoustic information unit are from the document DE 103 39 314 B3 known.

The pamphlet DE 10 2016 224 235 A1 describes a method and a device for adapting a display of image and/or control elements. In this case, a display is arranged on a dashboard of an interior of a vehicle in the middle of the dashboard. Two zones are defined in the interior, one on a driver's side and one on a passenger's side. Depending on which of these two different zones the driver's head is currently located in, an adapted image content is shown on the display.

Against this background, it was an object to provide visual protection from a driver for a display content of a screen of a vehicle that is intended for a passenger.

This object is achieved by a method and a system having the features of the independent patent claims. Embodiments of the method and the system emerge from the dependent patent claims and the description.

The method according to the invention is intended for setting a field of vision or a so-called eyebox for a screen or a monitor or a display or a display panel of a vehicle, e.g is displayed on the screen. The screen is provided for a passenger of the vehicle and is or will be assigned to the passenger for viewing, this screen being designed and/or designated as a passenger screen. Both a position of at least one eye of the passenger relative to the screen and a position of at least one eye of a driver of the vehicle relative to the screen are usually detected and/or determined by sensors. In addition, at least one optical and/or recognizable property of the field of vision is usually adjusted quantitatively and automatically depending on the position of the at least one eye of the passenger and the at least one eye of the driver, with the display content being visible to one eye only when it is in within the field of view and facing the screen. In the method, the field of view or the eyebox for a respective viewer, i. H. the passenger and/or the driver, is set automatically.

In one embodiment, a dimension, e.g. size, and/or intensity, e.g. light intensity, and thus a brightness as the at least one property of the field of vision, is or are dependent on a distance of the at least one eye of the front passenger and/or on a distance of the at least one eye of the driver adjusted relative to the screen. In this case, for example, the dimension is set to be larger and/or the intensity set higher, the greater the distance between the at least one eye of the driver and the screen, and the smaller the set, the smaller this distance is.

Alternatively or additionally, the size and/or intensity as the at least one property of the field of vision is/are dependent on a viewing direction, e.g. a viewing angle, of the at least one eye of the passenger and/or a viewing direction, e.g. of the driver's at least one eye on the screen and/or adjusted relative to the screen. In this case, for example, the dimension is set to be larger and/or the intensity set higher, the further away a focus of the viewing direction of at least one eye of the driver is from the screen, and the smaller or lower the set, the smaller this focus is Line of sight of at least one eye of the driver is removed from the screen.

In one embodiment, the dimension, for example size, is set quantitatively as the at least one property or as the value of the at least one property of the viewing area.

It is also possible for the intensity, for example a luminosity and/or brightness, to be set quantitatively as the at least one property or as the value of the at least one property of the viewing area.

Furthermore, the dimension and/or intensity of the field of vision is/are varied by the position of the at least one eye of the front passenger and the at least one eye of the driver and is at least linked to a dynamic change dynamically adjusted to one of the positions mentioned.

In one embodiment of the method, a characteristic map is used, which is stored in a computing unit, for example, with a position of the at least one eye of the front passenger relative to the screen and a respective position of the at least one eye of the driver relative to the screen being stored in the characteristic map a value is assigned to the at least one property of the field of view, the value being dependent on the positions of the eyes.

In this map, the at least one property of the field of vision or the value of this at least one property is assigned the position of at least one eye of the passenger and at the same time the position of at least one eye of the driver. The map takes into account that the position of the at least one eye of the passenger includes the distance of the at least one eye of the passenger to the monitor and/or the viewing direction of the at least one eye of the passenger on the screen. Accordingly, the position of the at least one eye of the driver relative to the screen includes the distance of the at least one eye of the driver from the screen and/or the viewing direction of the at least one eye of the driver on the screen. It is thus possible for the at least one property of the field of vision of the screen to be dependent on the distance between the at least one eye of the front passenger and the driver and the screen and/or the direction in which the at least one eye of the front passenger and the driver is looking at the screen. It is possible here for the at least one property or the value of the at least one property, which is dependent on the positions of the at least one eye of the passenger and the at least one eye of the driver, to be experimentally measured. In one embodiment, such a characteristic map determined by measurement is parameterized and stored in the computing unit.

In an embodiment of the method, current positions of the at least one eye of the front passenger and of the at least one eye of the driver relative to the screen are detected by sensors. The respective positions are entered into the characteristics map, with the at least one property or its value being determined, for example calculated, using the characteristics map, taking these positions into account. If the at least one eye, e.g. its viewing direction, turns away from the screen and looks somewhere else, it is possible that the dimension of the field of vision and/or its intensity, e.g. brightness, is increased. In contrast to this, the size and/or intensity is reduced if the driver usually directs the at least one eye, for example his line of sight, specifically to the screen.

It is also conceivable that, as an alternative to the characteristic map or in addition to the characteristic map, a model, e.g To determine the position of at least one eye of the passenger and at the same time depending on the position of at least one eye of the driver, for example. To calculate.

Alternatively or additionally, the dimensions are increased and/or the intensity of the field of vision is increased the further the distance of the at least one eye of the front passenger is from the screen, and reduced or lowered the smaller this distance is. In a further refinement, it is provided that the line of sight of the at least one eye of the front passenger is aligned perpendicularly to a surface of the screen and is therefore centered in front of the screen. In this case, it is possible for the property of the field of vision to be set as a function of a deviation in a viewing angle of the at least one eye on the surface of the front passenger's screen. The smaller such a deviation of the viewing angle from a right angle with respect to the surface of the screen, the smaller or lower the at least one property, i. H. the dimension and/or intensity of the field of view is set and/or switched. The greater such a deviation, the greater or higher the at least one property of the field of view is also set.

In one embodiment, in addition to the viewing angle of the at least one eye of the front passenger relative to the surface of the screen, the viewing angle of the at least one eye of the driver is also set relative to the surface of the screen. The property of the field of vision or the value of the at least one property of the field of vision is usually set automatically and dynamically, taking into account the positions of the at least one eye of the front passenger and the driver. It is u. a. possible to take into account a relation or a ratio of the positions mentioned to one another and to set the at least one property or its value automatically and dynamically, taking the positions mentioned jointly and/or mutually into account.

The system according to the invention is designed for setting a field of view for a screen of a vehicle, this image provided screen for a passenger of the vehicle and assigned to the passenger for viewing. The system has at least one sensor, for example an optical sensor such as a camera, and a computing unit. The at least one sensor is designed to detect and/or determine a position of at least one eye of the front passenger relative to the screen and a position of at least one eye of a driver of the vehicle relative to the screen, with the computing unit being designed to detect at least one quantitatively adjust the optical and/or recognizable property of the field of vision depending on the position of the at least one eye of the passenger and the at least one eye of the driver.

The system also includes the screen arranged in front of a passenger's seat with respect to a forward travel direction of the vehicle. The processing unit is designed to monitor, for example to control and/or regulate the presented method, for example also using artificial intelligence, and to set the field of vision in the process.

The field of view that can be set using the method and the system is generally intended for display content that is displayed using the screen or monitor. This display content can only be recognized or seen by an eye when it is in the field of vision and is directed at the screen. If, on the other hand, the eye is outside the field of view, this display content is not recognizable to the eye. In one embodiment, it is possible for the viewing area to be delimited by a light body, which is designed, for example, as a light cone and is therefore conical or in the shape of a truncated pyramid if the display content is rectangular.

It is possible for an embodiment of the method presented above to be carried out with an embodiment of the system presented above. It is also possible for the method to be carried out for a screen or monitor in an interior of the vehicle, for example a motor vehicle, which is arranged in front of the passenger's seat with respect to a forward direction of travel of the vehicle. It is possible in a further embodiment that on the screen, i. H. on a first portion of the screen, a dynamic or moving display content is displayed or displayed, whereas on at least a second portion of the screen a static or unmoving display content is displayed or displayed. Taking this into account, it is possible in one embodiment for the method to be carried out for a viewing area that is or is related to the at least one dynamic display content of the screen.

With the method and/or the system, it is possible, by automatically setting the field of view, to allow only the front passenger a view of the screen and, on the other hand, to avoid such a view of the screen for the driver, since he would otherwise be distracted from the display content of the screen becomes. The method is usually carried out when the vehicle is driving or moving and is controlled by the driver, i. H. etc. is steered. In this case, the driver must avoid seeing or looking at the screen. However, if the vehicle is stationary, it is alternatively possible to cancel a setting of the field of view provided according to the method and to allow the driver a complete view of the screen regardless of the position of the at least one eye.

If the intended automatic adjustment of the field of vision is switched on and a private mode is or will be activated, only the front passenger can see the screen within the usual tolerances, whereas both the front passenger and the driver can see the entire screen if the intended setting of the field of vision is switched off is with privacy mode disabled.

With the method, it is possible with activated private mode to realize a private or privacy circuit for the screen, which means that by automatically adjusting the field of vision according to the method presented and / or using the system presented privacy of the front passenger regarding a view of the screen is provided, with a view protection being realized for a display content that can usually only be viewed and/or visible within the field of vision.

In one embodiment, the spatial dimension of the field of vision or a corresponding eyebox of the screen or a display is enlarged or reduced depending on the current position of the at least one eye of the driver and the at least one eye of the front passenger. Furthermore, it is possible that the at least one property of the viewing area, i. H. its spatial dimensions and/or intensity, e.g. brightness, for an observer, d. H. for the passenger and the driver, is automatically varied, also taking into account a wider environment of the vehicle. Among other things, a brightness of the environment is taken into account. Alternatively or additionally, it is taken into account whether there are other people in the area surrounding the vehicle outside of the vehicle.

In one embodiment, the dimension of the viewing area or the eyebox has the shape of a rectangular truncated pyramid with a rectangular base area and/or at least one light cone, for example a large number of light cones. To set the dimensions of the viewing area, it is possible for an opening angle, at which the outer surfaces of the truncated pyramid-shaped light body are oriented relative to one another, and/or an opening angle of the at least one light cone to be set automatically, e.g. depending on the positions described above, or to be varied or become.

If, for example, the driver and thus at least one of his eyes moves in the direction of the passenger and approaches the screen, the field of vision, i. H. the dimensions of which are reduced for the passenger, with the opening angle of the light body described above also being reduced, for example. The field of vision for the driver is also automatically reduced, with the driver being prevented from seeing the screen so that it is not visible to him when he leans into a spatial area in the interior of the vehicle from which the passenger usually looks looks at the screen. It is possible that the field of vision or the eyebox is limited by the outer surfaces of the light body, which is usually in the form of a truncated pyramid. In one possible embodiment of the method, the outer surfaces of this light body are automatically set and/or adjusted, taking into account the position of the at least one eye of the front passenger and the at least one eye of the driver. Here it is u. a. possible, an opening angle under which two outer surfaces of the light body that delimit the light body are automatically enlarged or reduced, taking into account that the at least one eye of the driver is outside of the light body described.

If the dimensions and/or the intensity, e.g. brightness, of the field of vision are reduced or reduced, the ability of the front passenger to see the screen is impaired and/or reduced because the field of vision is darkened, for example. However, the screen or an image displayed on it remains for the passenger and can therefore be viewed. It is easy for the passenger to understand that the image or the display content on the screen is darkened due to the automatic setting of the field of vision, for example, as soon as the driver leans towards the passenger and approaches him and thus the screen.

Display content, for example an image, is usually displayed and/or presented on the screen, with this display content being emitted or radiated into the interior of the vehicle within the spatial field of vision or the eyebox.

When carrying out the method, it is no longer necessary, in comparison to known measures, to completely switch off the screen when the driver moves in its direction, for example bends. Thus, the passenger can still see or look at the display content on the screen, albeit restricted, if at least one of his eyes is in the field of vision or the eyebox, e.g. in the light body that limits the field of vision or the eyebox.

An image quality and a brightness of the screen can be improved in most vehicle driving situations by a field of view whose dimensions are set correspondingly large. In this case, it is not necessary for the passenger to look at the screen vertically or from a vertical viewing angle and thus be located in the center in front of the screen. In one embodiment of the method, it is possible that the spatial dimensions and/or intensity, e.g. brightness, of the screen or the display content displayed on it are largely retained if the front passenger sits laterally offset relative to the screen and accordingly from a viewing angle looks at the screen that deviates from a right angle and/or if the passenger moves his head and therefore his eyes. Only when the driver moves his head and thus his eyes in the direction of the field of vision or the eyebox of the front passenger is the field of vision of the front passenger reduced and the above-described opening angle of the light body, which spatially defines and/or limits the field of vision or the eyebox, reduced accordingly.

In an embodiment of the method, the at least one sensor or a corresponding sensor system detects the position of at least one eye, usually both eyes, and possibly also a head of the passenger and the driver. Depending on the positions detected by sensors, the spatial dimension of the field of view, usually the spatial dimension of the light body, and/or the intensity of the field of vision is automatically set, for example changed, by the computing unit as the control unit. In addition to positions of a respective eye of the passenger and the driver, other positions that influence the position of the at least one eye of the passenger and the at least one eye of the driver relative to the screen can also be taken into account. This applies, for example, to a position of the driver's and front passenger's heads, which are also sensory are recorded. Furthermore, it is also possible for a position of a respective seat on which a respective observer is sitting, ie the position of the passenger's seat and the position of the driver's seat, to be taken into account. For example, when the passenger's seat is shifted further rearward with respect to the vehicle's forward travel direction, the opening angle of the light body of the viewing area may be reduced. As a rule, each of the two seats has a headrest. The at least one sensor is designed to detect a position of the at least one eye of the driver relative to a headrest of the seat or driver's seat on which he is sitting and a position of the at least one eye of the front passenger relative to a headrest of the seat or front passenger's seat to grasp what he is sitting on. It is also possible, based on a respective setting of a respective seat, to determine the position of each of the two headrests relative to the screen and based on this in turn to determine the position of the at least one eye of the driver and the front passenger relative to the screen. In one embodiment, a first spatial area and a second spatial area are defined for the position of the at least one eye of the driver relative to the screen in the interior of the vehicle. These two areas directly adjoin one another, with the first area comprising the driver's seat and his headrest , while the second area is the screen. If the driver's at least one eye is in the second area and is still closer to the screen than to the headrest, it is possible that the private mode will be activated automatically and the field of vision of the screen will continue to be adjusted automatically, so that the presented procedure for setting the field of view is carried out in this case. If the driver's at least one eye is in the first area and still has a smaller distance to the headrest than to the screen, it is possible that the private mode is automatically deactivated, so that it is possible to detect another sensory To forego the position of at least one eye of the passenger and only to detect the position of at least one eye of the driver by sensor and to check which of the two spatial areas it is in, with the private mode being activated automatically as soon as the at least one eye is of the driver is in the second spatial area.

In addition, ambient conditions of the vehicle, such as lighting conditions in the area, are taken into account by sensors. It is also taken into account here that the intensity of the field of vision can be set the higher the brighter the surroundings of the vehicle are, since in this case the field of vision is perceived by the driver as less disruptive. The intensity, for example brightness, of the viewing area can be dimmed in one embodiment and thus adjusted continuously. It is provided that a darker field of vision with lower intensity is perceived by the driver as less disturbing. It is also taken into account whether there is a person next to the vehicle. In an embodiment of the method, this person can be treated in exactly the same way as the driver, with the field of view of the screen also being automatically adjusted depending on the position of at least one eye of the person outside the vehicle.

The at least one sensor for detecting the position of the at least one eye of the driver and the front passenger is, for example, a camera, configured as a TOF or time-of-flight and/or 3D camera, as an ultrasonic sensor, as a radar sensor or as a another sensor for detecting a position of an object, here the at least one eye of the driver and the at least one eye of the passenger, formed.

It is possible for the screen for the front passenger to have a liquid crystal display and/or to be designed or to be designated as a liquid crystal screen, it also being possible for the screen to be designated as an LCD (liquid crystal display) or LC display. It is also possible that the screen is designed to carry out an electrophoresis and thus uses electronic ink to display a display content. Regardless of a specific configuration of the screen, it is possible to electronically control and thus control and/or regulate the field of vision or the eyebox, e.g , which is applied to the screen and / or a current that flows through the screen, depending on the positions of the at least one eye of the passenger and the at least one eye of the driver automatically set, the opening angle e.g. by adjusting the current and / or the voltage is set. It is also possible for the screen to include light-emitting diodes (LEDs), these light-emitting diodes being arranged parallel to one another in a plurality of layers. In this case, it is possible to control and/or regulate an intensity of the light-emitting diodes and thus also of the viewing area in the respective layers. It is possible for the screen to be designed or to be designated as a dual-layer backlight or double background lighting.

In one embodiment, the field of vision or the eyebox is darkened or brightened depending on the driver's viewing angle of the screen, instead of alternatively displaying a different, e.g. static, display content. With the method and the system, the field of vision provided for the front passenger is automatically controlled as a function of the positions mentioned, ie enlarged or reduced as a function of the position. Furthermore, it is also possible to automatically set and/or vary the spatial dimensions of the field of vision, taking into account the surroundings of the vehicle.

It goes without saying that the features mentioned above and those still to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention.

• 1 zeigt in schematischer Darstellung eine Ausführungsform des erfindungsgemäßen Systems zum Durchführen einer Ausführungsform des erfindungsgemäßen Verfahrens.
• 2 zeigt in schematischer Darstellung ein Beispiel für einen Lichtkörper, der bei Durchführung der Ausführungsform des Verfahrens berücksichtigt wird.

The invention is shown schematically on the basis of embodiments in the drawing and is described schematically and in detail with reference to the drawing.

• 1 shows a schematic representation of an embodiment of the system according to the invention for carrying out an embodiment of the method according to the invention.
• 2 shows a schematic representation of an example of a light body that is taken into account when carrying out the embodiment of the method.

The figures are described in a coherent and comprehensive manner. The same components are assigned the same reference symbols.

1 shows a schematic representation of an interior of a vehicle designed or to be designated here as a motor vehicle, in which a driver with a head 8 sits on a seat or driver's seat (not shown) behind a steering wheel 12 on the driver's side, of which an eye 10 is shown schematically is shown. Next to the steering wheel on a passenger side, a passenger sits on another seat 7 or passenger seat, whose head 4 and an eye 6 are shown schematically here. It is provided here that the seat 7 for the front passenger and thus also the front passenger sitting on it are arranged behind a screen 2 or display, with this screen 2 usually being provided for the front passenger and being assigned to him for viewing a display content on the screen 2 .

The system according to the invention has a sensor 14 and a computing unit 16, which 1 are shown schematically. Here it is optionally possible that the screen 2 is also designed as a component of this system.

It is provided that the driver is not distracted by the display content on the screen 2, at least during a journey, when he steers the vehicle and steers it with the steering wheel 12, but that the passenger can still see this display content on the screen 2.

For this purpose, the method provides for the sensor 14 to record both a position or positions of at least one eye 10, usually both eyes 10, of the driver and a position or positions of at least one eye 6, usually both eyes 6 , the front passenger is detected and/or determined relative to the screen 2. In one embodiment, this means that a distance of the at least one eye 6, 10 of the driver and/or front passenger relative to the screen 2 and/or a viewing direction, e.g. a viewing angle, of the at least one eye 6, 10 of the front passenger and the driver the sensor 14 is detected.

Taking into account the stated positions of the eyes 6, 10 relative to the screen 2, a field of view with which the display content is shown or displayed on the screen 2 is automatically set by the computing unit 16 as a function of the position. This relates to a spatial dimension of the field of vision, which is automatically set depending on the position, and/or an intensity, for example brightness, of the field of vision, which is alternatively or additionally set automatically depending on the position.

In this regard, also on 2 referred, which shows a schematic representation of a light body 18 that defines the spatial dimension of the viewing area of the screen 2, determines and / or limits. This light body 18 is here largely in the form of a truncated pyramid and is defined by four outer edges 28a, 28b, 28c, 28d. In this case, two of these outer edges 28a, 28b, 28c, 28d are oriented relative to one another by an opening angle. It is provided here that the light body 18 of the field of vision increases, starting from the screen 2 in the direction of the passenger, with a distance between the outer edges 28a, 28b, 28c, 28d relative to one another in a plane parallel to a surface of the screen 2 being all the greater, the greater this plane is removed from the screen 2. In this regard, reference is also made to rectangles 24, 26, with a first rectangle 24 being arranged here on the screen 2 or in a plane of the screen 2. FIG. This first rectangle 24 forms a base area of the truncated pyramid-shaped light body 18. In contrast, the second rectangle 26 is arranged in a plane away from the screen 2 and is therefore at a distance from the screen 2, with this second rectangle 26 being the passenger's eye 6 is at a smaller distance than the screen 2.

In an embodiment of the method, it is provided for the automatic setting of the field of vision of the screen 2 that the opening angle between two of the outer edges 28a, 28b, 28c, 28d depends on the position of the at least one eye 6 of the front passenger and the at least one eye 10 of the driver automatically adjusted and enlarged or reduced depending on the position. Among other things, provided that the opening angle is set smaller, the smaller the distance between the at least one eye 10 of the driver and the screen 2 is. In one embodiment, the display content within the field of vision, here within the light body 18 , can only be seen by the front passenger at the set opening angle, it being possible for the display content to be displayed in the first rectangle 24 . The field of vision or the eyebox describes that area in which the display content of the screen 2, for example an image, can be seen. Provision is made for the brightness or intensity of the image or display content to be or is reduced outside the field of view and to decrease accordingly. The spatial dimension of the field of view is defined by the aperture angle that is automatically set as part of the method and is set as a function of the positions of the eyes 6, 10. Alternatively or additionally, the spatial dimensions of the viewing area are automatically adjusted by a size of the first rectangle 24, which is located in the plane of the screen 2, depending on the positions of the eyes 6, 10. The display content is visible or viewable within the viewing area.

Considering the light body 18 off 2 , which is largely designed in the shape of a truncated pyramid here, it is possible for two outer edges 28a, 28b, 28c, 28d to delimit an outer surface of this light body 18. In this case, these outer surfaces limit the field of vision, the display content of the screen 2 being visible within the framework of usual tolerances only between the outer surfaces and/or within the outer surfaces. In an embodiment of the method, it is possible to check whether at least one eye 10 of the driver is approaching the outer surfaces of the light body 18 . In this case, it is possible to reduce the opening angle between two outer edges 28a, 28b, 28c, 28d and/or the size of the first rectangle 24 and thereby to exclude the at least one eye 10 of the driver from the light body 18 and thus from the field of vision. eat. The same also applies in the event that the viewing direction, for example the viewing angle, of the driver's at least one eye 10 should be focused or directed within the light body 18 onto the screen 2 . Usually, the at least one eye 6 of the front passenger is largely independent of the opening angle within the field of vision, e.g.

With the presented method and the presented system, it is possible that by automatically setting the field of view depending on the position, it is prevented that the driver can, for example, watch a film that is displayed on the screen 2, whereas this film is still visible to the front passenger .

Reference List

2

Screen

4

Head

6

Eye

7

Seat

8th

Head

10

Eye

12

steering wheel

14

sensor

16

unit of account

18

lightbody

24, 26

rectangle

28a, 28b, 28c, 28d

outer edge

Claims (9)

Method for setting a viewing area for a screen (2) of a vehicle, the viewing area being provided for a display content that is displayed on the screen (2), the screen (2) being provided for a passenger of the vehicle, in which a Position of at least one eye (6) of the passenger relative to the screen (2) and a position of at least one eye (10) of a driver of the vehicle relative to the screen (2) are determined, with at least one property of the field of vision depending on the position of the at least one eye (6) of the passenger and the at least one eye (10) of the driver is set, the display content being visible to one eye (6, 10) only if it is in the field of vision and is looking at the screen (2nd ) is directed. procedure after claim 1 , in which the at least one property of the field of vision is set relative to the screen (2) depending on a distance of the at least one eye (6) of the front passenger and/or on a distance of the at least one eye (10) of the driver. procedure after claim 1 or 2 In which the at least one property of the field of vision is set relative to the screen (2) depending on a viewing direction of the at least one eye (6) of the passenger and/or on a viewing direction of the at least one eye (10) of the driver. Method according to one of the preceding claims, in which a dimension of the field of view is set as the at least one property of the field of view. Method according to one of the preceding claims, in which an intensity of the field of view is set as the at least one property of the field of view. Method according to one of the preceding claims, in which a characteristic map is used, with a position of the at least one eye (6) of the passenger relative to the screen (2) and a respective position of the at least one eye (10) of the driver in the characteristic map relative to the screen (2), a value is assigned to the at least one property of the viewing area. A method according to any one of the preceding claims, wherein the field of view is defined by a light body (18) which is conical or truncated pyramid shaped. System for setting a viewing area for a screen (2) of a vehicle, the viewing area being provided for a display content that is displayed on the screen (2), the screen (2) being provided for a passenger of the vehicle, the system has at least one sensor (14) and a computing unit (16), the at least one sensor (14) being designed to determine a position of at least one eye (6) of the passenger relative to the screen (2) and a position of at least one eye ( 10) to detect a driver of the vehicle relative to the screen (2), wherein the computing unit (16) is designed to determine at least one property of the field of vision depending on the position of the at least one eye (6) of the passenger and the at least one eye ( 10) of the driver, the display content being visible to an eye (6, 10) only when it is in the field of vision and is directed towards the screen (2). system after claim 8 Having the screen (2) which is arranged with respect to a forward direction of travel of the vehicle in front of a seat (7) for the passenger.

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