Car lamp

Abstract

A vehicle lamp (1) is provided with at least one device (8) for generating a dynamic three-dimensional lighting effect. The device comprises two screens (10, 12) with an array of punctiform lighting sources, said screens (10, 12) being juxtaposed to each other along two respective adjacent edges (10 ', 12'). The screens are located on respective screen planes that are incident on each other and converge toward the exterior of the lamp. The point-like illumination light sources of the screen are controlled by an electronic control unit (18) configured to control the brightness values of said point-like illumination light sources to generate luminescent images in a time series that form a video displaying one or more three-dimensional elements (20, 22, 24) in motion in an eye of an observer looking at the lamp.

Description

Technical Field

[0001] The present invention relates to a vehicle lamp provided with means for generating a dynamic three-dimensional lighting effect. Background Art

[0002] As is well known, due to the widespread application and continuous progress of LED lighting technology, the vehicle lamp industry's pursuit of special lighting effects has become increasingly strong.

[0003] For example, vehicle lamps that combine LED light strips with light guides of various shapes, geometric dimensions, and arrangements in the lamp are becoming increasingly popular to achieve special lighting effects. For example, in the increasingly crowded industry, they can help highlight the characteristics of the vehicle's brand or model.

[0004] Precisely because there are more and more competitors and the competition is becoming more intense, although vehicle manufacturers strive to seek more and more innovative solutions, the room for maneuver tends to shrink. Even due to compliance with industry regulations, the available space for accommodating lighting devices, the requirement for higher reliability, and the need to control production costs, there are still objective limitations. Summary of the Invention

[0005] The object of the present invention is to propose a vehicle lamp that can generate a lighting effect significantly different from that generated by existing vehicle lamps.

[0006] Another object of the present invention is to provide a vehicle lamp that can generate a special lighting effect without causing an increase in the structural complexity, size, and manufacturing cost of the vehicle lamp.

[0007] Yet another object of the present invention is to provide a vehicle lamp that can generate a lighting effect substantially free from mechanical and optical limitations and is thus fully customizable, for example, also based on the state of the vehicle.

[0008] Such an object is achieved by the vehicle lamp according to claim 1 and the device for generating a three-dimensional dynamic lighting effect according to claim 14.

[0009] The dependent claims describe preferred or advantageous embodiments of the lamp and the device. Brief Description of the Drawings

[0010] In any case, the features and advantages of the vehicle lamp and the device for generating a three-dimensional dynamic lighting effect according to the present invention will be apparent from the following description of the preferred embodiments given in a non-limiting indicative manner with reference to the accompanying drawings, in which:

[0011] - Figure 1 and Figure 1a are two perspective views of the vehicle lamp according to the present invention;

[0012] - Figure 2is the front view of the vehicle lamp;

[0013] - Figure 3 is the cross-sectional view of the lamp taken along line A-A in Figure 2 ;

[0014] - Figure 4 and Figure 4a are two exploded perspective views of the vehicle lamp;

[0015] - Figure 5 is an example of an image of a 3D animation created in a 3D modeling program;

[0016] - Figure 6 is another example of an image of a 3D animation projected onto two virtual screens in a 3D modeling program;

[0017] - Figure 7 shows the image in Figure 6 where the virtual screens are aligned relative to another virtual screen on the same plane;

[0018] - Figure 8 shows another example of an image of a 3D animation projected onto two aligned virtual screens viewed from the front;

[0019] - Figure 9 shows a software code section that contains sequential brightness values of dot-like illumination light sources for two vehicle lamp screens corresponding to the pixels of the image in Figure 8 ; and

[0020] - Figure 10 shows two actual vehicle lamp screens on which the desired three-dimensional lighting effect is formed. DETAILED DESCRIPTION

[0021] In the present disclosure, all directional references (e.g., up, down, upward, downward, left, right, leftward, rightward, top, bottom, above, below, vertical, horizontal, clockwise, and counterclockwise) are for identification purposes only to assist the reader in understanding the described embodiments and do not impose any limitations, particularly with respect to the position, orientation, or use of the described embodiments.

[0022] In the accompanying drawings, reference numeral 1 as a whole represents a vehicle lamp according to the present invention, particularly a taillight.

[0023] In the following description, the terms "rear / front" and "inner / outer" will be used to describe the components of lamp 1. The terms "rear" and "inner" will refer to anything facing the vehicle body; conversely, the terms "front" and "outer" will refer to anything facing the opposite direction (i.e., towards the observer looking at the vehicle lamp).

[0024] The vehicle lamp 1 includes a lamp body 2 which defines a lamp housing 4. At least one device 8 for generating a dynamic three-dimensional lighting effect is at least partially received in the lamp housing 4.

[0025] For example, the lamp body 2 is made of a box-shaped element open at the front. For example, the lamp body 2 may accommodate a support structure 14, and a lighting device, such as an LED lighting strip 15, associated support elements 15a cooperating with the support structure 14, and possibly an optical waveguide 15b, are fixed to the support structure 14.

[0026] The device for generating a three-dimensional dynamic lighting effect includes two screens 10, 12 having an array of dot-like lighting sources.

[0027] In one embodiment, a part of the support structure 14 (e.g., a side part) forms a frame 16 to which the two screens 10, 12 are fixed.

[0028] For example, the two screens 10, 12 form respective lamp walls that enclose a part of the lamp body 2 that is open outward.

[0029] In one embodiment, the dot-like lighting sources consist of micro LEDs. In fact, micro LEDs can produce a well-defined lighting effect while allowing the device for generating a three-dimensional dynamic lighting effect to be approved for use in vehicle lamps. However, it cannot be excluded that the screens can be made of OLEDs, or can be of the TFT or LCD type, or based on other technologies.

[0030] The two screens 10, 12 are juxtaposed with each other along two respective adjacent edges 10', 12'. The screens 10, 12 are located on respective screen planes that are incident on each other and converge in front (i.e., towards the outside of the lamp). In other words, an observer looking at the vehicle lamp 1 sees a convex surface formed by two inclined adjacent planes.

[0031] In one embodiment, considering the lamp mounted on a vehicle, the two screens 10, 12 are arranged vertically. In other words, assuming that the vehicle axis W extends horizontally from the front to the rear of the vehicle, the adjacent edges 10', 12' of the two screens are orthogonal to the vehicle axis W.

[0032] It should be noted that in a structural variant, if technological and production costs allow, the two screens 10, 12 can consist of two consecutive angled parts of a single screen.

[0033] Therefore, in this specification and the appended claims, the expression "two screens" includes both embodiments in which two separate, substantially flat screens are juxtaposed with each other to form a single screen at an angle, and embodiments in which a single screen is folded to form two angled parts with respect to each other.

[0034] The dot-like illumination light sources of the screens 10, 12 are controlled by an electronic control unit 18 which is configured to control the brightness values of the dot-like illumination light sources to generate a luminescent image in time series (hereinafter also referred to as a frame), and the luminescent image in time series forms a video showing one or more three-dimensional elements 20, 22, 24 in motion in the eyes of an observer looking at the lamp 1.

[0035] For example, as Figure 10 shown, the three-dimensional dynamic illumination effect generated by the light effect generating device 8 consists of an animation of a three-dimensional object, which is a car 20 in the Figure 10 example, and geometric objects such as a disc 22 and a plurality of bars 24 in the Figure 6 and Figure 7 examples, moving in a parallelepiped-shaped virtual chamber 26, and two consecutive sides of the chamber 26 are composed of two screens 10, 12.

[0036] In one embodiment, an angle of approximately 90° is formed between the screens 10, 12.

[0037] However, other angles greater than or less than 90° are also possible. For example, when observing the lamp 1 from different viewpoints with respect to the direction identified by the axis W of the car, an angle greater than 90° allows the animation produced by the lamp to be viewed in a manner with less distortion than the 90° angle configuration.

[0038] In addition, it has been noted that when observed from different viewpoints with respect to the direction identified by the axis W of the car, an animated virtual object with a square geometry undergoes less deformation than a spherical object.

[0039] In one embodiment, each of the screens 10, 12 forms an angle of approximately 45° with respect to the axis W of the car. When the observer looks at the lamp 1 from the viewpoint (POV) identified by the axis W of the car, this configuration allows a highly realistic three-dimensional dynamic illumination effect to be produced.

[0040] In one embodiment, the dot-like illumination light source is monochromatic. For example, in the case of a car taillight, the dot-like illumination light source is adapted to produce red light.

[0041] In other embodiments, for example, in the case where there is no specific monochromatic limitation, the dot-like illumination light source can be adapted to produce different colors, such as colors produced by a combination of three RGB LEDs or four RGBW LEDs.

[0042] In one embodiment, the electronic control unit 18 is placed in the lamp body 2, preferably behind the two screens 10, 12.

[0043] In one embodiment, the electronic control unit 18 includes a driver adapted to control the dot-shaped illumination light sources, a storage medium on which one or more illumination programs to be displayed on the screens 10, 12 are stored, and a microcontroller that controls the driver based on a selected illumination program.

[0044] In one embodiment, the adjacent edges 10', 12' of the two screens 10, 12 are shaped to achieve mutual shape coupling. In other words, the adjacent edges 10', 12' of the two screens 10, 20 are shaped such that their coupling forms a convex surface that is substantially continuous from the observer's viewpoint. For example, if an angle of 90° is formed between the two screens 10, 12, the adjacent edges are chamfered such that the side surfaces of the edges are inclined 45° with respect to the flat surfaces of the respective screens.

[0045] In addition to making the surface formed by juxtaposing the two screens 10, 12 substantially continuous, this technical solution can also make the distance between the dot-shaped illumination light sources of one screen (i.e., the last column of the dot-shaped illumination light source array) located near the edge adjacent to the other screen equal to the distance between the dot-shaped illumination light sources of the same screen. Therefore, in addition to the physical continuity between the two screens, continuity of the illumination effect is obtained when transitioning between the two screens.

[0046] A possible method for programming the brightness values of the dot-shaped illumination light sources will now be described.

[0047] Generally speaking, the present invention is based on the concept that for each image generated by the screens 10, 12, the brightness values of the dot-shaped illumination light sources are determined such that the dot-shaped illumination light sources of at least one of the two screens form a distorted image of one or more three-dimensional virtual elements, where the distortion is determined based on the selection of the observer's viewpoint such that when the observer views the two screens from the selected viewpoint, the observer sees the three-dimensional virtual elements in a non-distorted manner, as Figure 10 shown.

[0048] In other words, by observing at least one of the two screens 10, 12 from the front (i.e., from a direction perpendicular to the plane in which the screens lie), a distorted image is seen, which is deformed with respect to the image of a real three-dimensional object, the image of which is intended to be seen by an observer viewing the two screens 10, 12 from a preset viewpoint (POV), particularly from a direction substantially parallel to the axis W of the vehicle and passing through the vertex of the angle formed by the two screens 10, 12, as Figure 6 shown. On the contrary, when the observer looks at the lights from a position that coincides with or is close to the preset viewpoint, he / she will see the desired three-dimensional image, i.e., an image that truthfully reproduces the real three-dimensional object.

[0049] In one embodiment, a method of programming the brightness values of a point light source first designs a starting 3D animation corresponding to the videos displayed on two screens as seen by an observer through a 3D modeling program.

[0050] Thus, the three-dimensional objects in the starting 3D animation faithfully reproduce real objects.

[0051] Figure 5 An example of a 3D animation frame is shown. As described above, in addition to the three-dimensional elements in motion (in this example, the car 20), the walls of the virtual chamber 26 in which the three-dimensional objects move are also modeled.

[0052] Then, in the development environment of the 3D modeling program, the starting 3D animation is associated with two virtual screens 10a, 12a that simulate two real light screens 10, 12 placed side by side.

[0053] In other words, in the 3D modeling program, the starting 3D animation is set inside the chamber, where the two real light screens 10, 12 placed side by side represent two virtual walls 10a, 12a closest to the observer, that is, the virtual screens defined above.

[0054] In other words, the starting 3D animation includes not only three-dimensional objects in motion but also three-dimensional depictions of the two real screens 10, 12. The two real screens 10, 12 are modeled as being seen by an observer who views the lights from a preset point of view (POV), for example, in a direction parallel to the axis W of the car and passing through the vertex of the angle formed by the two screens 10, 12.

[0055] In other words, as described above, the two virtual screens 10a, 12a are arranged according to the observer's preset point of view (POV) (for example, identified by the direction of the axis W of the car).

[0056] Again, in the development environment of the 3D modeling program, the starting 3D animation is projected onto each of the two virtual screens 10a, 12a. Figure 6 An example of the starting 3D animation frame projected onto the two virtual screens 10a, 12a is shown.

[0057] In other words, the 3D modeling program connects the starting 3D animation elements to the corresponding virtual screens 10a, 12a.

[0058] Then, the 3D modeling program rotates one of the two virtual screens 10a, 12a (in this example, the smaller virtual screen 12a) so that it is coplanar with the other screen. The rotation is performed around a rotation axis (parallel to the Z-axis in the drawing) passing through the connection line S between the two virtual screens 10a, 12a.

[0059] Thus, a 2D animation is formed, which is at least partially distorted relative to the starting 3D animation. In particular, as can be noted from the example of Figure 7 the image projected onto the virtual screen (12a) that has been rotated from its starting position is distorted.

[0060] This results in a single virtual screen 10b that reproduces the images projected onto the two starting screens in a single plane, with at least one of them being distorted due to the rotation of the corresponding screen.

[0061] As described above, the distorted image corresponds to what the observer would see when viewing the lamp not from the preset point of view (POV), but from a direction perpendicular to the real screen 12 corresponding to the virtual screen 12a that is being rotated.

[0062] Next, in the development environment of the 3D modeling program, the positions and / or orientations of the two aligned virtual screens 10a, 12a or the single virtual screen 10b are modified so that they are displayed in a front view.

[0063] Figure 8 Again, an example of a car is shown Figure 10 depicted on a single virtual screen 10b composed of two aligned virtual screens 10a, 12a and viewed from the front. It should be noted that the front part of the car is completely distorted.

[0064] At this point, the 2D animation is decomposed into frames in a time sequence, i.e., images.

[0065] Thus, each frame is decomposed into a pixel grid corresponding to the union of two arrays of dot-like illumination light sources. In other words, each pixel in the frame corresponds to a dot-like illumination light source.

[0066] Finally, for each frame, the light intensity of each pixel is associated with the brightness value of the corresponding dot-like illumination light source. Thus, when the dot-like illumination light sources are powered on to produce light with an intensity equal to the value determined in the previous step, they jointly produce an illumination effect corresponding to a frame of the 2D animation.

[0067] Since this illumination effect is produced on two angled real screens 10, 12, an observer viewing the lamp from a viewpoint that is consistent or close to the preset point of view (POV) (and from which the virtual screen is modeled) sees an undistorted depiction of the lamp, i.e., corresponding to a real three-dimensional object seen stereoscopically, as shown in the example of Figure 10 .

[0068] Figure 9 shows a part of the software code for implementing the illumination program to be displayed on the two screens 10, 12 of the vehicle headlamp 1. For example, such software code is stored on a storage medium that is accessible from or forms part of an electronic processing unit, particularly a microcontroller.

[0069] Specifically, digital data of R rows separated by commas in sequence is depicted. The R rows of the code represent the rows of an array formed by the union of two arrays of dot-like illumination light sources. Each numerical data is the light intensity value of the corresponding dot-like illumination light source. For example, the electronic processing unit 18 can operate in 8 bits, so as to drive each dot-like illumination light source with 255 levels of light intensity. Therefore, Figure 9 the numerical data of the R rows in the code represents one level among 255 levels of light intensity, where level 0 represents that the light source is not powered on.

[0070] Obviously, in the case of an illumination light source composed of multiple lighting devices, such as an RGB LED, a set of numerical data will be reported instead of a single numerical data, for example, a triple in the case of an RGB LED.

[0071] It should be noted that, especially in the case of a monochromatic source, using multiple bits to define the light intensity level can increase the contrast level between the virtual elements constituting the scene, thus making the animations displayed on the screens 10, 12 particularly realistic.

[0072] In one embodiment, in order to produce the effect that the dynamic three-dimensional virtual elements 20, 22 emerge from the planes of the screens 10, 12 in a particularly eye-catching and realistic manner, the brightness values of the dot-like illumination light sources are controlled so as to create a peripheral frame 30 at least along the lower edges and vertical edges of the two screens. This peripheral frame 30 mainly forms a contrast with the rest of the screens, especially with the background of the virtual chamber 26 and the dynamic three-dimensional elements 20, 22, 24. This contrast is only interrupted in some frame sequences to produce the superimposed effect of the three-dimensional elements 20, 22 in motion on a part of the peripheral frame 30, thus simulating the emerging effect from one or both of the screens 10, 12.

[0073] In one embodiment, this distinct peripheral frame 30 is obtained by turning off the dot-like illumination light sources at the peripheral frame.

[0074] Therefore, the above device for generating a three-dimensional dynamic lighting effect allows the vehicle lamp to be combined with or replace more traditional lighting effects, generating a realistic three-dimensional light animation that can be clearly seen by the observer of the gazing lamp.

[0075] It should also be noted that, especially by using dot-like illumination light sources with sufficient power and capable of meeting the standards and specifications set for vehicle lamps, such as mini LEDs, the arrays of dot-like illumination light sources of one or both of the control screens 10, 12 can also be controlled to perform the lighting and signal lamp functions of the lamp, such as brake lights and position lights (or tail lights).

[0076] In other words, the screens 10, 12 (especially those made with micro-LED technology) can not only achieve various different static and dynamic lighting effects, but also perform any lighting functions expected in a vehicle, such as position signals or braking (rear) functions, etc.

[0077] Therefore, the screens 10, 12 of the lamp according to the present invention can both produce three-dimensional aesthetic lighting effects and produce typical lighting and / or signaling functions of the lamp. This is also because the screens made with micro-LED technology or equivalent technology can emit light to meet the photometric standards and specifications related to the typical lighting and / or signaling functions of the lamp.

[0078] By arranging the two screens at an angle, even with small screens that can be accommodated in the restricted part of the vehicle lamp, a virtual chamber in which one or more three-dimensional elements move can be simulated.

[0079] Due to the strong contrast that can be generated between the peripheral part of the screen, the background (such as of the virtual chamber), and the dynamic three-dimensional elements, a realistic effect of the moving virtual elements emerging from the screen plane can also be produced.

[0080] Without departing from the scope of the following claims, those skilled in the art can modify and adjust the embodiments of the vehicle lamp according to the present invention, or can replace them with other functionally equivalent elements to meet the needs from time to time. Each feature described as belonging to a possible embodiment can be made independent of the other described embodiments.

Claims

1. A vehicle lamp (1), comprising a lamp body (2) and at least one device (8), the at least one device (8) being at least partially housed inside the lamp body, for producing a three-dimensional dynamic lighting effect, comprising two screens (10, 12) having arrays of point-like illumination sources, the screens (10, 12) being juxtaposed to each other along two respective adjacent edges (10', 12'), the screens being located on respective screen planes incident on each other and converging towards the outside of the lamp, thereby forming a convex surface with respect to a viewpoint outside the lamp, wherein: The point-like illumination sources of the screen are controlled by an electronic control unit (18), which is configured to control the brightness values ​​of the point-like illumination sources, thereby generating a time-series of luminous images, which form a video showing one or more three-dimensional elements (20, 22, 24) in motion in the eyes of an observer who is looking at the lights.

2. The vehicle lamp according to claim 1, wherein: The screens (10, 12) form an angle of about 90° therebetween.

3. The vehicle lamp according to claim 1 or 2, wherein: Each of the screens (10, 12) forms an angle of about 45° with respect to a vehicle axis (W) extending in the front-rear direction of the vehicle.

4. A vehicle lamp according to any one of the preceding claims, wherein The point-shaped lighting source is a micro LED.

5. A vehicle lamp according to any one of the preceding claims, wherein The point-shaped illumination source is monochromatic.

6. A vehicle lamp according to any one of the preceding claims, wherein The electronic control unit (18) is placed in the lamp body (2), behind the two screens (10, 12).

7. A vehicle lamp according to any one of the preceding claims, wherein: The adjacent edges (10', 12') of the two screens are shaped so that their coupling forms a substantially continuous convex surface from the viewpoint of the observer, and the distance between the point light sources of the one screen (10) close to the corresponding adjacent edge (10') and the point light sources of the other screen (12) close to the corresponding adjacent edge (12') is equal to the distance between the point light sources of the same screens (10, 12).

8. A vehicle lamp according to any one of the preceding claims, wherein For each image, a brightness value of the point-like illumination source is determined so that the point-like illumination source of one of the two screens (12) forms a distorted image of the one or more three-dimensional elements (20, 22, 24), wherein the distortion is determined based on a selection of an observer's viewpoint so that when the observer observes the two screens (10, 12) from the selected viewpoint, the observer sees the one or more three-dimensional elements (20, 22, 24) in a non-distorted manner.

9. A vehicle lamp according to any one of the preceding claims, wherein: The brightness value of the point-shaped illumination light source is determined by a method for programming the brightness value of the point-shaped illumination light source, the method comprising the following steps: - using a 3D modeling program to design a starting 3D animation corresponding to the video displayed on the two screens (10, 12) of the lamp as seen by the observer; - associating in the 3D modeling program the starting 3D animation with two virtual screens (10a, 12a) simulating the two juxtaposed light screens (10, 12), wherein the two virtual screens (10a, 12a) are arranged according to a preset observer viewpoint; - projecting the starting 3D animation onto each of the two virtual screens (10a, 12a) in the 3D modeling program; - rotating one of the two virtual screens (12a) in the 3D modeling program so that it is coplanar with the other virtual screen (10a) to form a distorted 2D animation relative to the starting 3D animation; - framing from a front view in the 3D modeling program, the two virtual screens (10a, 12a) being aligned; - decomposing the 2D animation into time-sequential frames; - dividing each frame into a pixel grid corresponding to the union of the two arrays of point illumination sources; - For each frame, the light intensity of each pixel is associated with the brightness value of the corresponding point-like illumination source.

10. The vehicle lamp according to claim 9, wherein: The sequential brightness values ​​of each point-like illumination source forming the sequential frames of the video are stored on a storage medium included in or accessible by the electronic control unit.

11. A vehicle lamp according to any one of the preceding claims, wherein The brightness values ​​of the point-like illumination sources are controlled so as to form a peripheral frame (30) on the two screens (10, 12), the peripheral frame (30) mainly contrasting with the remaining illuminated parts of the screens and with respect to the dynamic three-dimensional elements (20, 22, 24), and so as to interrupt the contrast only in some image sequences to produce a superimposition effect of the one or more three-dimensional elements (20, 22) in motion on a part of the peripheral frame (30).

12. The vehicle lamp according to claim 11, wherein: The peripheral frame (30) is obtained by turning off the point-shaped illumination light source at the peripheral frame (30).

13. A vehicle lamp according to any one of the preceding claims, wherein The point-shaped illumination light sources of the one or both screens (10, 12) are controlled by the electronic control unit (18) to perform a lighting or signal light function, such as a brake light or a position light.

14. A device for producing a three-dimensional dynamic lighting effect, comprising two screens (10, 12) having arrays of point-like illumination sources, the screens being juxtaposed to one another along two respective adjacent edges (10', 12'), the screens being located on respective screen planes incident on one another and converging towards a viewpoint of an observer, wherein: The point-like illumination sources of the screens are controlled by an electronic control unit (18), which is configured to control the brightness values ​​of the point-like illumination sources so as to generate a time-series of luminous images, wherein the time-series of luminous images form a video showing one or more three-dimensional elements (20, 22, 24) in motion in the eyes of an observer who is looking at the screens (10, 12), wherein for each image, the brightness values ​​of the point-like illumination sources are determined so that the point-like illumination sources of one of the two screens form a distorted image of the one or more three-dimensional elements, wherein the distortion is determined based on the selection of an observer's viewpoint so that when the observer observes the two screens from the selected viewpoint, the observer sees the one or more elements in a non-distorted manner.

15. The device according to claim 14, wherein: The brightness value of the point-shaped illumination light source is determined by a method for programming the brightness value of the point-shaped illumination light source, the method comprising the following steps: - using a 3D modeling program to design a starting 3D animation corresponding to the video displayed on the two screens as seen by the observer; - associating the starting 3D animation with two virtual screens (10a, 12a) simulating the two juxtaposed screens (10, 12) in the 3D modeling program, wherein the two virtual screens (10a, 12a) are arranged according to a preset observer viewpoint; - projecting the starting 3D animation onto each of the two virtual screens (10a, 12a) in the 3D modeling program; - rotating one of the two screens (12a) in the 3D modeling program so that it is coplanar with the other virtual screen (10a) to form a distorted 2D animation relative to the starting 3D animation; - framing in the 3D modeling program in a front view, with the two virtual screens (10a, 12a) aligned; - decomposing the 2D animation into time-sequential frames; - dividing each frame into a pixel grid corresponding to the union of the two arrays of point illumination sources; - For each frame, the light intensity of each pixel is associated with the brightness value of the corresponding point-like illumination source.

16. The device according to claim 14 or 15, wherein: The adjacent edges (10', 12') of the two screens (10, 12) are shaped so as to achieve a mutual shape coupling suitable for forming a convex surface that is substantially continuous from the viewpoint of the observer, and the distance between the point light sources of the one screen (10) close to the corresponding adjacent edge (10') and the point light sources of the other screen (12) close to the corresponding adjacent edge (12') is equal to the distance between the point light sources of the same screens.

17. The device according to any one of claims 14 to 16, wherein: The brightness values ​​of the point-like illumination sources are controlled so as to form a peripheral frame (30) on the two screens (10, 12), the peripheral frame (30) mainly contrasting with the remaining illuminated parts of the screens (10, 12) and with respect to the dynamic three-dimensional elements (20, 22, 24), and so as to interrupt the contrast only in some image sequences to produce a superimposition effect of the one or more three-dimensional elements (20, 22) in motion on a part of the peripheral frame (30).

Images