WO2023237308A1

WO2023237308A1 - Projection system for vehicle and vehicle

Info

Publication number: WO2023237308A1
Application number: PCT/EP2023/063258
Authority: WO
Inventors: Xiaofei Yang
Original assignee: Bayerische Motoren Werke Aktiengesellschaft
Priority date: 2022-06-09
Filing date: 2023-05-17
Publication date: 2023-12-14
Also published as: CN217879827U

Abstract

The present invention relates to a projection system for a vehicle, characterized in that the projection system comprises: one projection device, at least one light splitter, and at least one reflector arranged downstream of the light splitter; wherein one of the light splitter(s) is configured to partially transmit and partially reflect the light beam emitted by the projection device, and the reflector is configured to reflect the light beam(s) transmitted and/or reflected by the light splitter, such that at least two images at different positions can be projected by the one projection device. In addition, the present invention relates to a vehicle comprising at least one projection system according to the present invention.

Description

Projection System for Vehicle and Vehicle

The present invention relates to a projection system for a vehicle and a vehicle.

Projection devices have been commonly used in vehicles nowadays. Examples of this include, for example, head-up displays (HUD), which are typically designed as projection devices that can project a projection beam with the desired display content onto the front windshield of a motor vehicle, so that the display content can be within the field of vision of the driver.

However, known projection devices are only capable of projecting the display content onto one position. If the display content is to be additionally provided at a different position, a further projection device is to be installed in the vehicle. This undoubtedly results in an increase in manufacturing costs.

The object of the present invention is to provide a projection system for a vehicle, which can utilize one projection device for image projection onto at least two different positions simultaneously.

According to a first aspect of the present invention, a projection system for a vehicle comprises: one projection device; at least one light splitter; and at least one reflector arranged downstream of the light splitter; wherein one of the light splitter is configured to partially transmit and partially reflect the light beam emitted by the projection device, and the reflector is configured to reflect the light beam(s) transmitted and/or reflected by the light splitter, such that at least two images at different positions can be projected by the one projection device.

In the sense of the present invention, a projection device can be understood in a broad way. The projection device may include an epidiascope and a projector, wherein the epidiascope includes, for example, a direct- injection epidiascope and a reflective epidiascope, capable of projecting a transparent slide or an opaque picture in an enlarged manner by a convex lens imaging principle, and the projector includes, for example, a TFT-LCD (Thin Film Transistor Liquid Crystal Display) projector, a DLP (Digital Light Processing) projector, a laser scanning projector, and an LCOS (Liquid Crystal on Silicon) projector, capable of projecting digitized image information.

In the present invention, the light splitter, which can be further referred to as a beam splitter, can split a light beam incident into the light splitter into two light beams, in particular two light beams having mutually orthogonal propagation directions. The light beam emitted by the projection device is herein first split by one of the light splitters, so that the light beam is partially transmitted by the light splitter and partially reflected by the light splitter.

According to the present invention, it is provided that at least one reflector is arranged downstream of the light splitter. This means that the light beam after being emitted from the projection device will be at least partly incident on the reflector after passing through the light splitter. The reflector can further reflect the light beam emitted from the light splitter. Here, the reflector may reflect the light beam transmitted by the light splitter, or the reflector may reflect the light beam reflected by the light splitter, or the reflectors may reflect the light beam transmitted and the light beam reflected by the light splitter, respectively. In this way, at least two images at different positions can be projected by the one projection device.

Through the projection system according to the present invention, by using the combination of the light splitter and the reflector, at least two images can be projected on different positions by the one projection device. Because only cost-effective optical means are additionally used in the present invention, without any need to provide further expensive projection devices, the quantity of projection images is advantageously increased, and an additional viewing area is created and visual effects are improved under the condition that manufacturing costs are not significantly increased, which creates novel and unique experience of driving for vehicle users. According to one embodiment of the present invention, the projection system may comprise only one reflector, which reflects the light beam transmitted or reflected by the light splitter. Here, only one reflector is provided downstream of the light splitter, which reflector reflects either the light beam transmitted by the light splitter or the light beam reflected by the light splitter. On the one hand, when the one reflector reflects the light beam transmitted by the light splitter, the light beam finally projected with the image undergoes one reflection in each case, which makes it possible for both light beams to be approximately transverse to the emission direction of the projection device, i.e. , transverse to the optical axis direction of the projection device. By means of this change of the beam direction, the flexibility of the mounting position of the projection device can be increased, in particular the mounting height of the projection device can be reduced. This is particularly advantageous, for example, when the projection system is used as a head-up display, since the projection device therein can be arranged in the transverse direction of the vehicle, without any need to provide a deep mounting hole behind the dashboard for the projection device. On the other hand, when the one reflector reflects the light beam reflected by the light splitter, an additional path of projection light beam may be provided in the the emission direction of the projection device, in other words, beside the optical axis direction, which may be substantially parallel to the emission direction or the optical axis direction and undergo two reflections. By means of such an arrangement, the already existing projection devices in vehicles can be advantageously retrofitted to provide additional images.

According to one embodiment of the present invention, the projection system may comprise two reflectors, which respectively reflect the light beam transmitted and the light beam reflected by the light splitter. In this embodiment, the light beams emitted by the projection device are respectively reflected on a reflector after passing through the light splitter. The final projection direction can be defined more flexibly than in the previous embodiment, so that images are produced at diverse positions.

According to one embodiment of the present invention, a further light splitter may be arranged downstream of the one light splitter. The further light splitter is capable of further splitting the light beam that has passed through the one light splitter, such that the projection system is capable of producing more than two images. Here, the position of the further light splitter may be variously provided, for example, it may be arranged on the side of the one light splitter where the reflector is not arranged, it may be arranged between the one light splitter and the reflector, or it may be provided behind the reflector.

According to one embodiment of the present invention, the light splitter and/or the reflector may be provided with an adjustment mechanism, thereby providing the possibility to adjust the image projected by the projection system.

According to one embodiment of the present invention, the adjustment mechanism can be configured to adjust a position and/or an angle. As an example, the adjusting mechanism may be a screw and nut mechanism, a sliding table and/or a displacement table, so that the spatial position of the light splitter and/or the reflector may be adjusted. It is also possible that the adjustment mechanism may be a rotation mechanism and/or a turn table, so that the angular orientation of the light splitter and/or the reflector may be adjusted.

According to one embodiment of the present invention, the light splitter may be a semi-transmissive and semi-reflective mirror, a light splitting prism or an electrochromic optical means, and/or the light splitter has a substrate made of inorganic glass or transparent plastic. The semi-transmissive and semi-reflective mirror can be used here cost-effectively to partially transmit and partially reflect the light emitted by the projection device. The semi-transmissive and semi-reflective mirror may be made by applying a dielectric film or a metal film, particularly a lattice metal film, on a substrate made of inorganic glass or transparent plastic. The light splitting prism is formed by gluing two isosceles right-angled prisms with bevels into a cube or a cuboid, and a dielectric film or a metal film, particularly a lattice metal film, is also applied to the bevels. The assembly of the projection system can be further simplified, and the optical accuracy can be ensured by the external shape of the light splitting prism. In the case where the light splitter is configured as a semi-transmissive and semi-reflective mirror or a light splitting prism, the light splitter can have a transmittance of between 35% and 65%, preferably a transmittance of between 40% and 60%, particularly preferably a transmittance of 50%. Accordingly, the above-mentioned transmittance means that the reflectance of the light splitter can be 35% to 65%, preferably between 40% and 60%, particularly preferably 50%, ignoring absorption losses. In other words, the splitting ratio of the light splitter is between 7: 13 and 13: 7, preferably between 2: 3 and 3: 2, particularly preferably 1: 1. The electrochromic optical means can, for example, achieve a total reflection effect and a total transmission effect, without or with the application of a voltage, respectively, and the ratio of the transmission and reflection fractions can be adjusted by adjusting the applied voltage. By using the electrochromic optical means, the number of images (e.g., only one or more of the at least two images are projected) can be advantageously set or brightness ratios of the images can be advantageously assigned. In addition, the inorganic glass as the substrate refers to an amorphous solid containing a silicate-based nonmetallic material as a main material. The transparent plastic as the substrate refers to a plastic having a high transmission capability of visible light, which includes, for example, organic glass (i.e. , polymethylmethacrylate, PMMA, commonly known as acryl), Polycarbonate (PC), Polystyrene (PS), transparent acrylonitrile-butadiene-styrene copolymer (ABS), styrene-methyl methacrylate copolymer (MS), poly-4-methyl-1 -pentene, transparent polyvinyl chloride (PVC), polysulfone, polyterephthalate, transparent epoxy, and the like. In addition, a microstructure can be provided on the light splitter to optimize the optical effect.

According to one embodiment of the present invention, the reflector may be a plane mirror, a concave mirror, a convex mirror or a reflective prism, and/or the reflector may have a substrate made of inorganic glass, transparent plastic or metal. Here, the optical path requirements can be matched by using different kinds of reflectors, for example, a plane mirror to produce a mirror reflection, a concave mirror to produce a converging effect of the light beam, a convex mirror to produce a diverging effect of the light beam, and a reflecting prism to produce one or more reflections of the light beam. Here, the reflecting prism may be related to an isosceles right-angled prism, an isosceles prism, a dove prism, a pentagonal prism, an orthorhombic prism, a Schmidt prism, or the like. In addition, a microstructure may also be provided on the reflector to optimize the optical effect.

According to one embodiment of the present invention, the at least two images may be identical images or mirror-symmetrical images. In the projection system according to the present invention, at least a part of the light beam may be reflected at least once, and the projected images may be the same images or mirror-symmetrical images according to the number of reflections. For example, when the light beam undergoes zero or an even number of reflections, the projected image is identical to the original image generated by the projection device, whereas when the light beam undergoes an odd number of reflections, the projected image is mirror-symmetrical to the original image generated by the projection device. Thus, the images projected by the projection system according to the present invention may be identical images or mirror-symmetrical images.

According to one embodiment of the present invention, the at least two images may have different sizes. Since the individual light beams from which the images are projected may have different optical paths, the at least two images that are projected may have different sizes. This in particular makes it possible to project two images of unequal sizes on the front windshield, wherein the smaller image can be projected in front of the driver and thus less influence the field of view thereof, while the larger image can be projected in front of the co-driver.

According to one embodiment of the present invention, the projection system can be integrated in an instrument panel, a headliner, a center console, a front vehicle section or a rear vehicle section. Preferably, the projection system may be configured to project an image onto a windshield, an instrument panel, a window, a door, a back of a seat, a headliner, a front road surface or a rear road surface. On the one hand, the projection system according to the present invention can be arranged in an instrument panel, a headliner or a center console for carrying out the projection inside the vehicle passenger cabin. For example, the image can be projected thereby on a windshield, an instrument panel, a window, a door, a back of a seat or a headliner. On the other hand, it can be arranged in a front vehicle section or a rear vehicle section for projection outside the vehicle, for example for projecting the at least two images on the road surface in front of or behind the vehicle.

According to one embodiment of the present invention, the projection system can be configured to project two images respectively onto the left and right halves of the windshield, onto the left and right halves of the instrument panel, onto the left and right doors, onto the left and right windows, onto the back of the driver's seat and the back of the co-driver's seat, or onto the front and rear windshields.

According to one embodiment of the present invention, the image can be used to present vehicle information, operating interface, entertainment content, ambient lighting, prompt graphic-and-text and/or decorative elements. Here, the projection system according to the present invention can be used to present the following: vehicle information, such as vehicle speed, motor speed, fuel tank or battery level, navigation route, etc.; an operator interface, such as an interface for operating vehicle comfort components, an interface for operating infotainment systems, an interface for inputting information, etc.; entertainment content such as photos, videos, animations, etc.; mood lighting, such as colored illuminated areas; prompting graphics, such as safety prompts, operation guides, indicative patterns and the like; decorative elements, such as patterns, figures, etc.

A further aspect of the present invention relates to a vehicle, which comprises at least one projection system according to the present invention.

Other features of the present invention are derived from the accompanying drawings and from the detailed description of the invention. All the features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the embodiments and/or shown separately in the drawings can be used not only in the correspondingly given combination, but also in other combinations or in a separate state. Fig. 1 a schematic optical path diagram of a projection system according to a first embodiment of the present invention;

Fig. 2 a schematic optical path diagram of a projection system according to a second embodiment of the present invention;

Fig. 3 a schematic optical path diagram of a projection system according to a third embodiment of the present invention;

Fig. 4 a schematic optical path diagram of a projection system according to a fourth embodiment of the present invention; and

Fig. 5 a perspective schematic diagram of a projection system according to a first embodiment of the present invention.

In the respective embodiments described differently, the same elements are provided with the same reference signs or the same element names, wherein the disclosures contained in the full text of the description can be transferred according to the meaning to the elements provided with the same reference signs or the same element names. In addition, in the respective embodiments, the number, implementation and/or arrangement of the elements are not limited to the examples shown, and other numbers, implementations and/or arrangements can be selected according to actual needs.

Fig. 1 shows a schematic optical path diagram of a projection system according to a first embodiment of the present invention. The projection system 1 according to the first embodiment includes: one projection device 2, one light splitter 3 and one reflector 4 arranged downstream of the light splitter 3; wherein the light splitter 3 is configured to partially transmit and partially reflect an emitted light beam P from the projection device 2, and the reflector 4 is configured to reflect the light beam reflected by the light splitter 3, such that two images F at different positions can be projected by the one projection device 2.

As can be seen from Fig. 1, the emitted light beam P from the projection device 2 is first incident into the light splitter 3, so that the emitted light beam P is split by the light splitter 3 into a first light beam S1 transmitted through the light splitter 3 and a second light beam S2 reflected by the light splitter 3. Next, the second light beam S2 is incident into the reflector 4 disposed downstream of the light splitter 3 on the reflecting side of the light splitter 3, so that the second light beam S2 is further reflected as a reflected light beam R. Then, two images F at different positions can be projected by means of the first light beam S1 and the reflected light beam R. Thus, by employing cost-effective optical means, in the case where manufacturing costs are not significantly increased, the quantity of projection images is advantageously increased, an additional viewing area is created and visual effects are improved, which creates novel and unique experience of driving for vehicle users.

In the case as shown in Fig. 1, an additional path of projection light beam, i.e., the above-mentioned reflected light beam R, may be provided beside the emission direction or the optical axis direction of the projection device 2, which may be substantially parallel to the emission direction or the optical axis direction. By means of such an arrangement, the already existing projection devices in vehicles, in particular head-up displays, can be advantageously retrofitted to provide additional images.

In the embodiment as shown in Fig. 1, the first light beam S1 that projects an image undergoes no reflection, while the reflected light beam R that projects an image undergoes two reflections. This allows both images F that are projected to be identical with the original image produced by the projection device.

It should be noted that in the arrangement as shown in Fig. 1, it is only provided that the light splitter 3 is arranged obliquely, in particular at 45 °, to the emitted light beam P. The reflector 4 may be arranged at an arbitrary angle to the second light beam S2 as required, so that the light beam can be reflected to a desired position.

Fig. 2 shows a schematic optical path diagram of a projection system according to a second embodiment of the present invention. The projection system 1 according to the second embodiment includes: one projection device 2, one light splitter 3 and one reflector 4 arranged downstream of the light splitter 3; wherein the light splitter 3 is also configured to partially transmit and partially reflect an emitted light beam P from the projection device 2, and the reflector 4 is configured to reflect the light beam transmitted through the light splitter 3, such that two images F at different positions can be projected by the one projection device 2.

As can be seen from Fig. 2, the emitted light beam P from the projection device 2 is first incident into the light splitter 3, so that the emitted light beam P is split by the light splitter 3 into a first light beam S1 transmitted through the light splitter 3 and a second light beam S2 reflected by the light splitter 3. Next, the first light beam S1 is incident into the reflector 4 disposed downstream of the light splitter 3 on the transmitting side of the light splitter 3, so that the first light beam S1 is further reflected as a reflected light beam R. Then, two images F at different positions can be projected by means of the reflected light beam R and the second light beam S2.

In the case as shown in Fig. 2, both the reflected light beam R and the second light beam S2 that project the image undergo one reflection. This makes the two images F that are projected identical and both mirror-symmetrical to the original image produced by the projection device.

In the case as shown in Fig. 2, both the reflected light beam R and the second light beam S2 that project the image may be substantially transverse to the emission direction of the projection device, i.e. , transverse to the optical axis direction of the projection device. By means of this change of the beam direction, the flexibility of the mounting position of the projection device can be increased, in particular, the mounting height of the projection device can be reduced. This is particularly advantageous, for example, when the projection system is used as a head-up display, since the projection device 2 can be arranged in the transverse direction of the vehicle, without io any need to provide a deep mounting hole behind the dashboard for the projection device 2.

In Figs. 1 and 2, the light splitter 3 is configured as a semi-transmissive and semi-reflective mirror as an example, and the reflector 4 is configured as a plane mirror as an example. Without being limited thereto, the light splitter 3 may also be configured as a light splitting prism or an electrochromic optical means, and the reflector 4 may also be configured as a concave mirror, a convex mirror or a reflective prism. Advantageously, the light splitter 3 may have a substrate made of inorganic glass or transparent plastic; the reflector 4 may have a substrate made of inorganic glass, transparent plastic or metal.

Further preferably, the light splitter 3 and/or the reflector 4 may be provided with an adjustment mechanism. The adjustment mechanism can be configured to adjust a position and/or an angle of the light splitter 3 and/or the reflector 4.

Fig. 3 shows a schematic optical path diagram of a projection system according to a third embodiment of the present invention. The projection system 1 according to the third embodiment includes: one projection device 2, one light splitter 3 and two reflectors, namely a first concave mirror 4’ and a second concave mirror 4”, arranged downstream of the light splitter 3; wherein the light splitter 3 is configured to partially transmit and partially reflect an emitted light beam P from the projection device 2, and the two reflectors 4 are configured to reflect the light beams transmitted and reflected by the light splitter 3 respectively, such that two images F at different positions can be projected by the one projection device 2.

In Fig. 3, it is shown more realistically that the projection device 2 emits the emitted light beam P with a certain emission angle. The emitted light beam P is first incident into the light splitter 3, so that the emitted light beam P is split by the light splitter 3 into a first light beam S1 transmitted through the light splitter 3 and a second light beam S2 reflected by the light splitter 3. Next, the first light beam S1 is incident into the first concave mirror 4’ disposed downstream of the light splitter 3 on the transmitting side of the light splitter 3, so that the first light beam S1 is further reflected by the first concave mirror 4’ as a first reflected light beam R1 , whereas the second light beam S2 is incident into the second concave mirror 4” disposed downstream of the light splitter 3 on the reflecting side of the light splitter 3, so that the second light beam S2 is further reflected by the second concave mirror 4” as a second reflected light beam R2. Then, two images F at different positions can be projected by means of the first reflected light beam R1 and the second reflected light beam R2. It is also exemplarily shown in Fig. 3 that the two images exhibit mirror symmetry, since the first reflected light beam R1 has undergone only one reflection and the second reflected light beam R2 has undergone two reflections.

Fig. 4 shows a schematic optical path diagram of a projection system according to a fourth embodiment of the present invention. The projection system 1 according to the fourth embodiment includes: one projection device 2, two light splitters, namely a first light splitting prism 3’ and a second light splitting prism 3”, and one reflector 4 arranged downstream of the second light splitter 3”; wherein the reflector 4 is configured as a reflecting prism. The first light splitting prism 3’ is configured to partially transmit and partially reflect the emitted light beam P from the projection device 2. The second light splitting prism 3” is arranged downstream of the first light splitting prism 3’, here on the transmitting side of the first light splitting prism 3’.

As can be seen from Fig. 4, the emitted light beam P from the projection device 2 is first incident into the first light splitting prism 3’, so that the emitted light beam P is split by the first light splitting prism 3’ into a first light beam S1 transmitted through the first light splitting prism 3’ and a second light beam S2 reflected by the first light splitting prism 3’. Next, the first light beam S1 is incident into the first second light splitting prism 3” disposed downstream thereof on the transmitting side of the first light splitting prism 3’, so that the first light beam S1 is further split into the third light beam S3 transmitted by the second light splitting prism 3” and the fourth light beam S4 reflected by the second light splitting prism 3”. The third light beam S3 is then incident on the reflector 4 configured as a reflecting prism and reflected as a reflected light beam R. Then, by means of the second light beam S2, the fourth light beam S4 and the reflected light beam R, three images F on different positions can be projected. Since all three light beams undergo only one reflection, the images projected by means of them are identical.

Fig. 5 shows a perspective schematic diagram of a projection system according to a first embodiment of the present invention. In Fig. 5, an exemplary layout of the projection device 2, the light splitter 3 and the reflector 4 of the projection system 1 in space is shown in a perspective manner. In analog to Fig. 1 , the emitted light beam P from the projection device 2 is first incident into the light splitter 3. Here, the incidence area of the reflected beam P on the light splitter 3 is indicated by a dashed box. The emitted light beam P is partially transmitted through the light splitter 3 and thus forms a first light beam S1 . The first light beam is projected onto a surface inside or outside the vehicle and forms an image F. At the same time, the emitted light beam P is also partially reflected by the light splitter 3 as a second light beam S2. Next, the second light beam S2 is incident into the reflector 4 disposed downstream of the light splitter 3 on the reflecting side of the light splitter 3, so that the second light beam S2 is further reflected as a reflected light beam R. The reflected light beam R may project another image F on the same surface or another surface. As can be seen from Fig. 5, the optical path lengths of the first light beam S1 and the reflected light beam R from the projection device 2 are different, and thus the image projected by means of the first light beam S1 has a different size from the image projected by means of the reflected light beam R.

Furthermore, it is noted that the projection system 1 according to the present invention can be integrated in an instrument panel, a headliner, a center console, a front vehicle section or a rear vehicle section. Preferably, the projection system 1 may be configured to project an image onto a windshield, an instrument panel, a window, a door, a back of a seat, a headliner, a front road surface or a rear road surface. In particular, the projection system 1 can project two images respectively onto the left and right halves of the windshield, onto the left and right halves of the instrument panel, onto the left and right doors, onto the left and right windows, onto the back of the driver's seat and the back of the co-driver's seat, or onto the front and rear windshields. As an example, the image can be used to present vehicle information, operating interface, entertainment content, ambient lighting, prompt graphic-and-text and/or decorative elements. The present invention is not limited to the embodiments shown but comprises or includes all technical equivalents that may fall within the scope of the appended claims. The positional references selected in the description, such as, for example, upper, lower, left, right, etc., can be transferred into a new position in the sense of a change in position, with reference to the direct description and to the illustrated drawings.

The features disclosed in the present application document can be essential for the realization of the embodiments in terms of different solutions and can be realized both individually and in any combination.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can use the method and technical contents disclosed above to make possible changes and modifications to the technical solution of the present invention without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical substance of the present invention are all within the protection scope of the technical solution of the present invention.

Claims

1 . A projection system for a vehicle, characterized in that the projection system comprises: one projection device; at least one light splitter; and at least one reflector arranged downstream of the light splitter; wherein one of the light splitter(s) is configured to partially transmit and partially reflect the light beam emitted by the projection device, and the reflector is configured to reflect the light beam(s) transmitted and/or reflected by the light splitter, such that at least two images at different positions can be projected by the one projection device.

2. The projection system according to claim 1 , characterized in that the projection system comprises only one reflector, which reflects the light beam transmitted or reflected by the light splitter.

3. The projection system according to claim 1 , characterized in that the projection system comprises two reflectors, which respectively reflect the light beam transmitted and the light beam reflected by the light splitter.

4. The projection system according to one of claims 1 to 3, characterized in that a further light splitter is arranged downstream of the one light splitter.

5. The projection system according to any one of claims 1 to 3, characterized in that the light splitter and/or the reflector is/are provided with an adjustment mechanism.

6. The projection system according to claim 5, characterized in that the adjustment mechanism is configured to adjust a position and/or an angle.

7. The projection system according to one of claims 1 to 3, characterized in that the light splitter is a semi-transmissive and semi-reflective mirror, a light splitting prism or an electrochromic optical means, and/or the light splitter has a substrate made of inorganic glass or transparent plastic.

8. The projection system according to one of claims 1 to 3, characterized in that the reflector is a plane mirror, a concave mirror, a convex mirror or a reflective prism, and/or the reflector has a substrate made of inorganic glass, transparent plastic or metal.

9. The projection system according to one of claims 1 to 3, characterized in that the at least two images are identical images or mirror-symmetrical images.

10. The projection system of one of claims 1 to 3, characterized in that the at least two images have different sizes.

11. The projection system according to one of claims 1 to 3, characterized in that the projection system is integrated in an instrument panel, a headliner, a center console, a front vehicle section or a rear vehicle section.

12. The projection system according to claim 11 , characterized in that the projection system is configured to project the images onto a windshield, an instrument panel, windows, doors, seat backs, a headliner, a front road surface or a rear road surface.

13. The projection system according to claim 12, characterized in that the projection system is configured to project two images respectively onto the left and right halves of the windshield, onto the left and right halves of the instrument panel, onto the left and right doors, onto the left and right windows, onto the back of the driver's seat and the back of the co-driver's seat, or onto the front and rear windshields.

14. The projection system according to one of claims 1 to 3, characterized in that the image is used to present vehicle information, operating interface, entertainment content, ambient lighting, prompt graphic-and-text and/or decorative elements.

15. A vehicle, characterized in that said vehicle comprises at least one projection system according to one of the claims 1 to 14.