Display system
The display system enhances image brightness and stability by using scattering elements and intensity-modulated semiconductor laser light to counteract wind effects on drone-mounted screens.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- OSAKA UNIVERSITY
- Filing Date
- 2024-12-26
- Publication Date
- 2026-07-08
AI Technical Summary
Screens mounted on drones face challenges in maintaining orientation due to their weight and wind effects, and increasing the aperture ratio for lighter screens reduces image brightness, making it difficult for viewers to see.
A display system with a screen surface formed by scattering elements arranged in a frame, using a projection device to modulate intensity of semiconductor laser light based on detected scatterer positions, enhancing brightness at scatterer locations.
The system achieves high-brightness image display on lightweight screens less affected by wind, maintaining orientation and visibility even in outdoor conditions.
Smart Images
Figure 2026114364000001_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a display system that performs display on a screen with a diffuser disposed on a part of the screen surface.
Background Art
[0002] In recent years, aerial displays using drones have been carried out. For example, LEDs (light emitting diodes) are attached to a plurality of drones, and display is performed by arranging the plurality of drones in the air; a cloth display with LEDs attached is suspended from a drone to perform display; etc.
[0003] Also, Non-Patent Documents 1 and 2 describe a configuration in which a visible light semiconductor laser is mounted on a drone, and light from the visible light semiconductor laser is irradiated onto a screen suspended from another drone to perform display.
Prior Art Documents
Non-Patent Documents
[0004]
Non-Patent Document 1
Non-Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0005] Screens mounted on drones have difficulty maintaining their orientation due to their own weight and the effects of wind. For example, using an open screen with an opening can reduce weight and the effects of wind. With an open screen, the higher the aperture ratio (the ratio of the opening to the entire screen), the lighter and less susceptible to wind the screen becomes. However, the higher the aperture ratio, the lower the brightness of the image displayed on the screen, making it difficult for viewers to see.
[0006] One aspect of this disclosure has been made in view of the above-mentioned problems, and its purpose is to realize a display system that provides high brightness of the displayed image even on a screen with a high aperture ratio. [Means for solving the problem]
[0007] To solve the aforementioned problems, a display system according to one aspect of the present disclosure includes a screen having a screen surface formed by scattering elements arranged in a part of a frame for displaying an image, a projection device that scans the screen surface with intensity-modulated projection light to display an image on the screen, and a detection device that detects the position of the scattering elements on the screen surface, wherein the projection device scans by increasing the brightness of the position of the scattering element detected by the detection device compared to the brightness of other positions. [Effects of the Invention]
[0008] According to one aspect of this disclosure, in a screen in which a scatterer is placed in part of the frame, the brightness at the location of the scatterer is increased compared to the brightness at other locations, thereby enabling the displayed image to be high-brightness. [Brief explanation of the drawing]
[0009] [Figure 1] This is a perspective view illustrating the overview of the display system related to this disclosure. [Figure 2] This figure shows an example of scanning using a projection device. [Figure 3]This diagram shows the intensity of the semiconductor laser light emitted from the projection device. [Figure 4] This is a diagram showing a modified example of a scattering material. [Figure 5] A perspective view showing an overview of a screen according to another embodiment. [Figure 6] This diagram shows an example where each screen is equipped with a projection device. [Figure 7] This diagram shows an example where a mirror is provided for each screen. [Figure 8] This diagram shows an example of projecting directly onto multiple screens from a single projection device. [Figure 9] This figure shows an example of scanning using a projection device. [Figure 10] This figure shows the intensity of the scanning semiconductor laser light. [Modes for carrying out the invention]
[0010] [Embodiment 1] An embodiment of this disclosure will be described in detail below. Figure 1 is a perspective view illustrating the overview of the display system 1 according to this disclosure. As shown in Figure 1, the display system 1 includes a screen 10, a projection device 20, and a detection device 30 for detecting scattered objects 11 within the screen 10. As an example, the screen 10 is suspended by a drone 50. An image is displayed on the screen 10 by projecting onto the screen 10 suspended by the drone 50 using the projection device 20. Since the screen 10 is suspended by the drone 50, it is undesirable for it to be too heavy. Also, the screen 10 is intended for outdoor use and is subject to the effects of wind, etc.
[0011] Therefore, the screen 10 according to this disclosure is a rectangle with frames 14 on all four sides, and the surface formed by the scattering bodies 11 within the rectangle formed by the frames 14 is the screen surface S, and the scattering bodies 11 are arranged in a substantially circular shape within the screen surface S. The scattering bodies 11 are arranged in a matrix within the screen surface S by warp threads 12 and weft threads 13, with the vertical direction being vertical and the horizontal direction being horizontal. Areas within the screen surface S where scattering bodies 11 are not arranged are empty, and wind can pass through. This makes the screen 10 lightweight and reduces the influence of wind. This makes it possible to realize an aerial screen with a stable position of the screen surface S. The frames 14 may consist of two sides, the top and bottom, or just the top side, as long as the orientation of the screen 10 can be maintained to some extent. In addition, depending on the suspension method, the frames 14 themselves may not be necessary.
[0012] Since the screen 10 has areas on its screen surface S where the scattering material 11 is placed and areas where it is not placed and is empty, it can also be called an open screen if the empty areas are considered openings. Within the frame 14, the proportion occupied by the scattering material 11 may be 5% or less, in which case the opening ratio of the screen 10 can be said to be 95% or more.
[0013] The projection device 20 includes a visible light semiconductor laser and displays an image on the screen 10 by irradiating the screen 10 with semiconductor laser light while scanning it. By using semiconductor laser light, it is possible to display images with high brightness, high color saturation, and high visibility even in sunlight.
[0014] In addition, the projection device 20 can modulate the intensity of the semiconductor laser light irradiated by intensity modulation, and based on the detection result of the scatterer 11 by the detection device 30 described later, irradiates the screen 10 with the semiconductor laser light such that the intensity is high at the position of the scatterer 11 and low at other positions. As a result, the luminance of the scatterer 11 increases, and the light passing through the space on the screen 10 where the scatterer 11 is not arranged is reduced, so that the brightness is equivalent to the case where there is no aperture in the screen 10. That is, a high-luminance image can be displayed on the screen 10.
[0015] Fig. 2 shows an example of the scanning by the projection device 20. As shown in Fig. 2, the semiconductor laser light irradiated from the projection device 20 scans from the scatterer 11a arranged at the upper left of the screen surface S as viewed from the projection device 20 to the right to the scatterer 11b, scatterer 11c, scatterer 11d, etc., and when it scans to the scatterer 11f arranged at the right end, it goes down one step and scans from the scatterer 11 at the right end to the scatterer 11 at the left end. The scanning is continued until the scatterer 11 arranged at the lowermost stage.
[0016] Also, a scanning method different from the above may be used. For example, a raster scanning method may be used. That is, the semiconductor laser light irradiated from the projection device 20 scans from the scatterer 11a arranged at the upper left of the screen surface S as viewed from the projection device 20 to the right to the scatterer 11b, scatterer 11c, scatterer 11d, etc. Then, when it scans to the scatterer 11f arranged at the right end, it goes down one step, returns to the left, and scans from the scatterer 11 at the left end to the scatterer 11 at the right end. The scanning may be continued until the scatterer 11 arranged at the lowermost stage. Furthermore, depending on the image, a vector scanning method such as a freehand drawing method may be used.
[0017] The detection device 30 detects the position of the scatterer 11 on the screen surface S by means of a camera. Alternatively, the detection device 30 uses LiDAR (Light Detection And Ranging) to detect the position of the scatterer 11 on the screen surface S. The position to be detected also includes the distance from the detection device 30 to the scatterer 11. That is, the three-dimensional position of the scatterer 11 is detected. When realizing the detection of the three-dimensional position only by a camera, a stereo camera may be used. Also, a method of obtaining a two-dimensional image with a normal camera and detecting the distance with LiDAR may be used. Furthermore, a three-dimensional LiDAR that performs two-dimensional scanning may be used. If a three-dimensional LiDAR is used, the three-dimensional position can be detected without a camera. Then, the detected position of the scatterer 11 is notified to the projection device 20.
[0018] Also, when detecting the position of the scatterer 11 on the screen surface S, the position of the scatterer 11 on the screen surface S is detected at a fixed time interval longer than the frame time of image formation, immediately before the image projection by laser scanning. In particular, when it is difficult to detect the position with high accuracy at night or the like, the screen 10 is illuminated substantially uniformly with laser light or the like from the projection device 20 immediately before the image projection by laser scanning at a fixed time interval longer than the frame time of image formation, so as to detect the position of the scatterer 11 on the screen surface S. However, when using a three-dimensional LiDAR, no camera is required, so illumination is not required at night either.
[0019] In the present embodiment, a camera is used as the detection device 30, but it is not limited thereto. For example, by installing light receiving elements at a plurality of locations such as near the four corners and the central part of the frame 14 of the screen 10, and near the periphery of the scatterer including the back of several scatterers, based on the distribution of the electrical outputs detected by each of the plurality of light receiving elements, the position of the frame 14 of the screen 10 and the position of the scatterer 11 on the screen surface S may be electrically detected.
[0020] Alternatively, a retroreflective material may be embedded in a part of the screen 10, and the position of the scatterer 11 on the screen surface S may be detected by detecting the reflected light from the retroreflective material with a LiDAR or camera. By detecting the reflected light from the retroreflective material with a LiDAR or camera, the position of the scatterer 11 can be detected with high sensitivity, similar to the configuration described above. Furthermore, if the distribution of the scatterer 11 constituting the screen 10 is known in advance, the position of the scatterer 11 can be determined by calculation simply by detecting the position of the frame 14, thereby improving accuracy and ease of detection.
[0021] [Examples of intensity modulation of semiconductor laser light] Next, with reference to Figure 3, the intensity of the semiconductor laser light emitted from the projection device 20 will be explained. Figure 301 shows an example of the arrangement of the scatterers 11 when the screen surface S is viewed from a direction perpendicular to the screen surface S. Figure 302 conceptually illustrates the relationship between the position of the scatterers 11 on the screen surface S and the intensity of the semiconductor laser light emitted from the projection device 20.
[0022] In the example shown in 301, the scatterers 11 are arranged in a matrix on the screen surface S. The projection device 20 modulates the intensity of the semiconductor laser light so that the intensity of the semiconductor laser light is stronger at the positions where the scatterers 11 are located. For example, the projection device 20 modulates the intensity of the semiconductor laser light in accordance with the position of the scatterers 11. For instance, it increases the intensity of the semiconductor laser light when the irradiation position of the semiconductor laser light is at the scatterer 11a located in the upper left of the screen surface S, then decreases the intensity of the semiconductor laser light until it reaches the position of the scatterer 11b located to the right of the scatterer 11a, and then increases the intensity of the semiconductor laser light again at the position of the scatterer 11b.
[0023] The line indicated by component number 21 in Figure 302 shows the intensity of the semiconductor laser light, with the intensity increasing as it moves upwards. For example, at the position corresponding to the scatterer 11a, line 21 has a peak 21a. That is, the intensity of the semiconductor laser light is strong at the position of the scatterer 11a. Subsequently, line 21 remains flat, i.e., the intensity of the semiconductor laser light is weak, or the semiconductor laser light is off, and then becomes strong at the position corresponding to the scatterer 11b, as shown by the peak 21b. In this way, the intensity of the semiconductor laser light is strong at the position corresponding to the scatterer 11, and the display brightness of the screen 10 at the position of the scatterer 11 is higher compared to other positions.
[0024] As described above, the display system 1 includes a screen 10 that forms a screen surface S for displaying an image using scatterers 11 arranged in a part of the frame 14, a projection device 20 that scans the screen surface S with intensity-modulated projection light (semiconductor laser light) to display an image on the screen 10, and a detection device 30 that detects the position of the scatterers 11 on the screen surface S. The projection device 20 scans by increasing the brightness of the position of the scatterer 11 detected by the detection device 30 compared to the brightness of other positions. For example, the projection device 20 scans by increasing the intensity of the projection light at the position of the scatterer 11 detected by the detection device 30 compared to other positions. As a result, the display system 1 can be applied to an aerial display that is less affected by wind and has high image display brightness.
[0025] [Variation] The above example describes a configuration in which nearly circular scattering bodies 11 are arranged in a matrix, but the screen 10 is not limited to this configuration. Figure 4 shows a modified configuration of the scattering bodies 11. For example, as shown in 401 of Figure 4, strip-shaped scattering bodies 11a may be arranged with their longitudinal direction horizontal and at predetermined intervals in the vertical direction. In this case, the scattering bodies 11a may be suspended vertically by warp threads 12a. The length of the strip-shaped scattering bodies 11a in the shorter direction may be, for example, 1 mm, and the predetermined interval between the scattering bodies 11a may be 9 mm. In this case, the aperture ratio is 90%.
[0026] Alternatively, as shown in 402 of Figure 4, rectangular scatterers 11b may be arranged in a grid pattern on the screen surface S. That is, scatterers 11b may be arranged in a grid pattern using scatterers 11bv arranged with their longitudinal direction vertical and scatterers 11bh arranged with their longitudinal direction horizontal.
[0027] The length of the scatterer 11b in the shorter direction may be, for example, 0.5 mm, and the spacing between the scatterers 11b may be 9.5 mm. In this case, the aperture ratio will be 90.25%.
[0028] As described above, whether the scattering bodies 11a are arranged in a curtain-like pattern or the scattering bodies 11b are arranged in a grid pattern, the areas other than those where the scattering bodies 11a or 11b are placed are open and allow wind to pass through. Therefore, just as with the case where a roughly circular scattering body 11 is used, lightweight screens 10a and 10b with reduced wind effects can be realized.
[0029] [Embodiment 2] Other embodiments of this disclosure are described below. For the sake of clarity, components having the same function as those described in the above embodiments are denoted by the same reference numerals, and their descriptions are not repeated.
[0030] Traditionally, there have been 3D displays that allow observers to perceive three-dimensional images. 3D displays can be broadly divided into two types: glasses-type displays that require glasses and glasses-type displays that do not. Glasses-type displays include parallax barrier technology, lenticular lens technology, holographic displays, and integral photography, but each has its advantages and disadvantages in terms of display to the general public, emergency display, and simplicity of structure, and there is no single definitive solution.
[0031] The screen 10' according to this embodiment is constructed by stacking multiple screens 10 so that their screen surfaces S are parallel, and by arranging the scattering elements 11 of each screen 10 so that they do not overlap when viewed from a direction perpendicular to the screen surface S. In other words, screen 10' is a stack of multiple screens 10. By stacking multiple screens 10, a 3D display that is less affected by wind can be realized. In particular, by setting the aperture ratio to 90% or more, a 3D display that is almost unaffected by wind can be realized.
[0032] Figure 5 shows an overview of screen 10'. Figure 5 is a perspective view showing the overall overview of screen 10'. As shown in Figure 5, screen 10' consists of screens 10x, 10y, and 10z stacked on top of each other so that their screen surfaces S are parallel. Note that Figure 5 shows an example where three screens 10 (screens 10x, 10y, and 10z) are stacked, but the number of screens 10 that can be stacked is not limited to three; any number can be used. For example, tens or hundreds of screens 10 may be stacked. This makes it possible to display a more three-dimensional image with a greater sense of depth.
[0033] Furthermore, in screen 10', the scattering elements 11 of screens 10x, 10y, and 10z are arranged so that they do not overlap when viewed from the direction perpendicular to the screen surface S, that is, from the direction in which the observer observes screen 10'. For example, the upper left scattering elements 11 of each screen 10 (scattering element 11x of screen 10x, scattering element 11y of screen 10y, and scattering element 11z of screen 10z) are positioned so that they do not overlap when viewed from the direction perpendicular to the screen surface S. Therefore, an observer observing screen 10' will observe three screens 10 (screens 10x, 10y, and 10z) at different distances from themselves, and will be able to observe an image with depth, i.e., a three-dimensional image. In addition, since screen 10' is made up of multiple screens 10 stacked on top of each other, the structure can be made simple.
[0034] Next, with reference to Figures 6-8, a method for projecting an image onto the screen 10' using the projection device 20 will be described. Figure 6 shows an example in which a projection device 20 is provided for each of the screens 10x, 10y, and 10z. That is, projection is performed on screen 10x using projection device 20x, on screen 10y using projection device 20y, and on screen 10z using projection device 20z.
[0035] Figure 7 shows an example in which a mirror 40 is provided for each screen 10x, 10y, and 10z, and semiconductor laser light emitted from a single projection device 20 is reflected by the mirror 40 corresponding to each screen 10x, 10y, and 10z and projected onto the corresponding screen 10. In the example shown in Figure 7, the semiconductor laser light emitted from the projection device 20 is reflected by mirror 40x and projected onto screen 10x, reflected by mirror 40y and projected onto screen 10y, and reflected by mirror 40z and projected onto screen 10z. This allows projection onto multiple screens 10 using a single projection device 20.
[0036] Figure 8 shows an example of projecting directly onto multiple screens 10x, 10y, and 10z from a single projection device 20. As described above, the scatterers 11 of the multiple screens 10x, 10y, and 10z are positioned in non-overlapping locations when viewed from a direction perpendicular to the screen surface S, and the areas where no scatterers 11 are placed are empty. Therefore, the projection device 20 can irradiate each of the scatterers 11 of the multiple screens 10x, 10y, and 10z with semiconductor laser light. For example, when irradiating the scatterer 11x of screen 10x with semiconductor laser light, the light is irradiated directly; when irradiating the scatterer 11y of screen 10y, the light passes through the empty space of screen 10x before irradiating the scatterer 11y; and when irradiating the scatterer 11z of screen 10z, the light passes through the empty spaces of screens 10x and 10y before irradiating the scatterer 11z. This makes it possible to irradiate screen 10' without preparing multiple projection devices 20 or multiple mirrors 40.
[0037] Next, referring to Figures 9 and 10, we will explain the scanning by the projection device 20 and the intensity of the semiconductor laser light used for scanning. Here, we will explain using the example of irradiating the screen 10' with semiconductor laser light using one projection device 20.
[0038] As shown in Figure 9, 1001, first, semiconductor laser light X1 is shone from the projection device 20 onto the scatterer 11x-1 (first scatterer) located in the upper left of screen 10x. Next, as shown in 1002, semiconductor laser light Y1 is shone onto the scatterer 11y-1 (first scatterer) located in the upper left of screen 10y. The semiconductor laser light Y1 passes through the empty space of screen 10x and shone onto scatterer 11y-1. Next, as shown in 1003, semiconductor laser light Z1 is shone onto the scatterer 11z-1 (first scatterer) located in the upper left of screen 10z. The semiconductor laser light Z1 passes through the empty space of screens 10x and 10y and shone onto scatterer 11z-1. This completes the shone of semiconductor laser light onto the scatterers 11 located in the upper left of each screen 10. This is called the first scan.
[0039] Next, as shown at 1004 in Figure 9, semiconductor laser light X2 is shone from the projection device 20 onto scatterer 11x-2 (second scatterer) located next to scatterer 11x-1 on screen 10x. Next, as shown at 1005, semiconductor laser light Y2 is shone onto scatterer 11y-2 (second scatterer) located next to scatterer 11y-1 on screen 10y. The semiconductor laser light Y2 passes through the empty space of screen 10x and shone onto scatterer 11y-2. Next, as shown at 1006, semiconductor laser light Z2 is shone onto scatterer 11z-2 (second scatterer) located next to scatterer 11z-1 on screen 10z. The semiconductor laser light Z2 passes through the empty space of screens 10x and 10y and shone onto scatterer 11z-2. This completes the shattering of the semiconductor laser light onto the scatterers 11 located next to the upper left scatterer 11 on each screen 10. This is called the second scan. As the scanning continues in this manner, once the semiconductor laser light has been irradiated onto all the scatterers 11 placed on each screen 10, an image of one frame will be displayed on screen 10'.
[0040] As described above, the projection device 20 scans the first scattering objects 11x-1, 11y-1, and 11z-1 located in the upper left of frame 14 as viewed from the projection device 20, starting with the screen 10x closest to the projection device 20. After scanning all the first scattering objects 11x-1, 11y-1, and 11z-1 on all screens 10x, 10y, and 10z is completed, the projection device 20 scans the second scattering objects 11x-2, 11y-2, and 11z-2 located next to the first scattering objects 11x-1, 11y-1, and 11z-1, starting with the screen 10x closest to the projection device 20, and performs this scan for all scattering objects 11 in sequence.
[0041] Figure 10 shows the intensity of the semiconductor laser light in the example shown in Figure 9. In the graph shown in Figure 10, the horizontal axis represents the scanning time, and the vertical axis represents the intensity of the semiconductor laser light.
[0042] As shown in Figure 10, the intensity of the semiconductor laser light emitted from the projection device 20 increases when it irradiates scatterers 11x-1, 11y-1, and 11z-1. X1 represents the irradiation of scatterer 11x-1, Y1 represents the irradiation of scatterer 11y-1, and Z1 represents the irradiation of scatterer 11z-1. This completes the first scan. Next, the intensity increases when it irradiates scatterers 11x-2, 11y-2, and 11z-2. X2 represents the irradiation of scatterer 11x-2, Y2 represents the irradiation of scatterer 11y-2, and Z2 represents the irradiation of scatterer 11z-2. This completes the second scan. In this way, the intensity of the semiconductor laser light is increased when it irradiates scatterer 11, and scanning is performed.
[0043] 〔summary〕 A display system according to Embodiment 1 of the present disclosure includes a screen having a screen surface formed by scattering elements arranged in a part of a frame for displaying an image, a projection device that scans the screen surface with intensity-modulated projection light to display an image on the screen, and a detection device that detects the position of the scattering elements on the screen surface, wherein the projection device scans by increasing the brightness of the position of the scattering element detected by the detection device compared to the brightness of other positions.
[0044] In the display system according to aspect 2 of the present disclosure, in aspect 1, the projection device scans by increasing the intensity of the projected light at the position of the scatterer detected by the detection device compared to other positions.
[0045] In the display system according to embodiment 3 of the present disclosure, in embodiment 1 or 2, the frame is rectangular, and the scattering elements are arranged in a matrix within the frame.
[0046] In the display system according to aspect 4 of this disclosure, in any of aspects 1 to 3, the scattering body is substantially circular.
[0047] In any of embodiments 1 to 3, the display system according to embodiment 5 of the present disclosure is characterized in that the scattering body is rectangular, and within the frame, a plurality of scattering bodies are arranged at predetermined intervals in the direction of the shorter side of the scattering body.
[0048] In any of embodiments 1 to 3, the display system according to embodiment 6 of the present disclosure is characterized in that the scattering body is rectangular, and within the frame, a plurality of the scattering bodies are arranged in a grid pattern when viewed from a direction perpendicular to the screen surface.
[0049] In any of the embodiments 1 to 6, the display system according to embodiment 7 of this disclosure is characterized in that the detection device either detects the position of the scattering object using an image captured by a camera, or detects the position of the scattering object using LiDAR (Light Detection And Ranging).
[0050] The display system according to aspect 8 of the present disclosure includes a plurality of screens in any of aspects 1 to 7, wherein the plurality of screens are arranged in a manner that is perpendicular to the screen surface and overlaps each other.
[0051] In the display system according to aspect 9 of the present disclosure, in aspect 8, the scattering body is positioned between a plurality of overlapping screens in a direction perpendicular to the screen surface, where they do not overlap each other.
[0052] In the display system according to embodiment 10 of the present disclosure, in embodiment 8 or 9, the projection device scans the first scattering body located in the upper left of the frame as viewed from the projection device, starting from the screen closest to the projection device, and after scanning of the first scattering body on all screens is completed, scans the second scattering body located next to the first scattering body, starting from the screen closest to the projection device, and performs this for all scattering bodies in sequence.
[0053] A display system according to aspect 11 of the present disclosure includes, in any of aspects 8 to 10, a plurality of projection devices that project images corresponding to each of the screens.
[0054] A display system according to aspect 12 of the present disclosure includes, in any of aspects 8 to 10, a plurality of mirrors and one or more projection devices that project images corresponding to each of the screens, the one or more projection devices project images corresponding to each of the screens via the plurality of mirrors.
[0055] This disclosure is not limited to the embodiments described above, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of this disclosure. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment. [Explanation of symbols]
[0056] 1 Display System 10, 10', 10a, 10b, 10x, 10y, 10z screens 11,11a, 11b, 11c, 11d, 11e, 11f, 11x, 11y, 11z scatterer 14th slot 20, 20x, 20y, 20z projection equipment 30 Detection device 40, 40x, 40y, 40z mirrors 50 Drones
Claims
1. A screen in which a screen surface for displaying an image is formed by scattering elements placed in a part of the frame, A projection device that scans the screen surface with intensity-modulated projection light to display an image on the screen, Includes a detection device for detecting the position of the scattering object on the screen surface, The projection device is a display system that scans by increasing the brightness of the position of the scattering object detected by the detection device compared to the brightness of other positions.
2. The display system according to claim 1, wherein the projection device scans by increasing the intensity of the projected light at the position of the scatterer detected by the detection device compared to other positions.
3. The aforementioned frame is rectangular, The display system according to claim 1 or 2, wherein the scattering elements are arranged in a matrix within the frame.
4. The display system according to claim 3, wherein the scattering body is substantially circular.
5. The scattering body is rectangular, The display system according to claim 1 or 2, wherein within the frame, a plurality of the scattering bodies are arranged at predetermined intervals in the short direction of the scattering bodies.
6. The scattering body is rectangular, The display system according to claim 1 or 2, wherein within the frame, the plurality of scattering elements are arranged in a grid pattern when viewed from a direction perpendicular to the screen surface.
7. The detection device is The position of the scattering object is detected using the image captured by the camera, or The display system according to claim 1 or 2, wherein the position of the scattering object is detected using LiDAR (Light Detection and Ranging).
8. The aforementioned screens include multiple screens, The display system according to claim 1 or 2, wherein the plurality of screens are arranged in a manner that is perpendicular to the screen surface and overlaps each other.
9. The display system according to claim 8, wherein the scattering body is positioned between a plurality of overlapping screens in a direction perpendicular to the screen surface and does not overlap with one another.
10. The display system according to claim 9, wherein the projection device scans the first scattering body located in the upper left of the frame as viewed from the projection device, starting from the screen closest to the projection device, and after scanning of the first scattering body on all screens is completed, scans the second scattering body located next to the first scattering body, starting from the screen closest to the projection device, and performs this for all scattering bodies in order.
11. The display system according to claim 8, further comprising a plurality of projection devices for projecting images corresponding to each of the aforementioned screens.
12. The system includes a plurality of mirrors and one or more projection devices that project images corresponding to each of the aforementioned screens, The display system according to claim 8, wherein the one or more projection devices project images corresponding to each of the screens via the plurality of mirrors.