CN110297332B - Three-dimensional display device and control method thereof - Google Patents
Three-dimensional display device and control method thereof Download PDFInfo
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- CN110297332B CN110297332B CN201910576126.6A CN201910576126A CN110297332B CN 110297332 B CN110297332 B CN 110297332B CN 201910576126 A CN201910576126 A CN 201910576126A CN 110297332 B CN110297332 B CN 110297332B
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- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
- G02B30/54—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels the 3D volume being generated by moving a 2D surface, e.g. by vibrating or rotating the 2D surface
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Abstract
The invention discloses a three-dimensional display device and a control method thereof, and belongs to the technical field of display. The three-dimensional display device includes: the display screen comprises a plurality of display screens, a first display screen and a pair of second display screens, wherein the display surfaces of the second display screens are coplanar, the second display screens are symmetrical about a center line of the display surface of the first display screen, and the center line is positioned in the plane of the display surfaces of the second display screens; a control mechanism configured to control the first display screen and the second display screen to rotate around the center line, wherein the rotation speed of the second display screen is less than that of the first display screen.
Description
Technical Field
The invention relates to the technical field of display, in particular to a three-dimensional display device and a control method thereof.
Background
With the development of display technologies, display technologies have also been developed from two-dimensional planar displays to three-dimensional stereoscopic displays. The current three-dimensional Display technology can be divided into a class 4 including Glasses-based Stereoscopic Display, auto-Stereoscopic Display, holography (holography), and Volumetric three-dimensional Display (Volumetric 3-D Display).
The three-dimensional display can combine plane electronic scanning and mechanical scanning, and convert pixels in a two-dimensional plane into voxels in a space by controlling high-speed rotation of a display screen to form a three-dimensional picture.
Disclosure of Invention
The embodiment of the invention provides a three-dimensional display device and a control method thereof, which can solve the problem that the farther the distance from a rotating shaft in the three-dimensional display device adopting three-dimensional display is, the lower the resolution is. The technical scheme is as follows:
in one aspect, an embodiment of the present invention provides a three-dimensional display device, where the three-dimensional display device includes:
the display screen comprises a plurality of display screens, a first display screen and a pair of second display screens, wherein the display surfaces of the pair of second display screens are coplanar, the display surfaces of the pair of second display screens are symmetrical about a center line of the display surface of the first display screen, and the center line is positioned in a plane where the display surfaces of the pair of second display screens are positioned;
a control mechanism configured to control the first display screen and the second display screen to rotate around the center line, wherein the rotation speed of the second display screen is less than that of the first display screen.
In an implementation manner of the embodiment of the present invention, a ratio of the rotation speeds of the first display screen and the second display screen is equal to a ratio of a distance from a side of the second display screen far from the center line to a distance from a side of the first display screen far from the center line to the center line.
In one implementation manner of the embodiment of the present invention, the control mechanism includes:
the first rotating shaft is superposed with the central line, and the first display screen is connected with the first rotating shaft;
the second rotating shaft is superposed with the central line, and the second display screen is connected with the second rotating shaft;
the power assembly is configured to drive the first rotating shaft and the second rotating shaft to rotate.
In an implementation manner of the embodiment of the present invention, the first rotating shaft and the second rotating shaft are located at two sides of the first display screen.
In an implementation manner of the embodiment of the present invention, one of the first rotating shaft and the second rotating shaft is a hollow rotating shaft, and the other of the first rotating shaft and the second rotating shaft is located in the hollow rotating shaft and is concentric with the hollow rotating shaft.
In an implementation manner of the embodiment of the present invention, the control mechanism further includes:
the first display screen is connected to the first mounting seat, and one end of the first rotating shaft is fixed to the first mounting seat;
and the second display screen is connected to the second mounting seat, and one end of the second rotating shaft is fixed to the second mounting seat.
In an implementation manner of the embodiment of the present invention, the plurality of display screens further includes:
a pair of third display screens, the display surfaces of the pair of third display screens being coplanar, the display surfaces of the pair of third display screens being symmetric about the center line, the first display screen and the second display screen being positioned between the pair of third display screens, the center line being positioned in the plane of the display surfaces of the pair of third display screens;
the control mechanism is further configured to control the third display screen to rotate around the center line, and the rotation speed of the third display screen is smaller than that of the second display screen.
In one implementation manner of the embodiment of the present invention, when the display surfaces of the plurality of display screens are coplanar, a gap between display areas of adjacent display screens in the plurality of display screens is less than 1 mm.
In one implementation manner of the embodiment of the present invention, the rotation speed of the display screen with the slowest rotation speed among the plurality of display screens is greater than 24 rotations per second.
On the other hand, an embodiment of the present invention further provides a three-dimensional display device control method, where the method is applied to the three-dimensional display device according to any one of the preceding items, and the method includes:
controlling each display screen of the three-dimensional display device to rotate;
and controlling the display of each display screen of the three-dimensional display device, wherein each display screen displays each part of the same two-dimensional image when rotating to the same angle within the display time of one frame of three-dimensional image, and the three-dimensional image is composed of a plurality of two-dimensional images.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the display screens of the three-dimensional display device comprise a first display screen and a pair of second display screens, wherein the display surfaces of the pair of second display screens are coplanar, the display surfaces of the pair of second display screens are symmetrical about the central line of the display surface of the first display screen, and the central line is positioned in the plane of the display surfaces of the pair of second display screens. When the display device works, the control mechanism controls the first display screen and the second display screen to rotate, the first display screen is arranged between the pair of second display screens, if the rotating speeds of the first display screen and the second display screen are the same, the obtained result is that the voxel generated by the second display screen is larger than the voxel generated by the first display screen, but in the embodiment of the invention, the rotating speed of the second display screen is smaller than the rotating speed of the first display screen, so that the voxel generated by the second display screen is reduced, the smaller the voxel is, the higher the resolution ratio is, and the better the display effect is, therefore, the scheme provided by the embodiment of the invention improves the display effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic illustration of a volumetric three-dimensional display in the related art;
FIG. 2 shows a schematic of the structure of a voxel;
fig. 3 is a schematic structural diagram of a three-dimensional display device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a control mechanism provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating an alternative control mechanism provided by an embodiment of the present invention;
FIG. 6 shows a schematic structural view of a base;
FIG. 7 shows a schematic structural view of another mount;
FIG. 8 is a schematic structural diagram of another three-dimensional display device according to an embodiment of the present invention;
fig. 9 is a flowchart of a method for controlling a three-dimensional display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a three-dimensional display of a volume in the related art. Referring to fig. 1, in the imaging process, the volumetric three-dimensional display technology fully utilizes the human persistence of vision effect, controls the two-dimensional display screen 10 to rotate around the rotation axis x at a rotation speed that is not perceived by human, and simultaneously continuously displays two-dimensional images when the two-dimensional display screen 10 rotates, pixels in a two-dimensional plane are converted into voxels in space under the action of rotation, and human eyes see a true three-dimensional stereoscopic image with a real depth of field, that is, a cylinder shown in fig. 2.
Each point in the image displayed on the two-dimensional display screen is called a pixel, which forms a voxel when the display screen is rotated. Fig. 2 shows a schematic structural diagram of a voxel, and referring to fig. 2, when the display screen is rotated to a first angle S, an image displayed by a first pixel unit of the display screen is a first pixel, which corresponds to an image formed by ABCD in the image; and when the angle is the second angle S ', the image displayed by the first pixel unit of the display screen is the second pixel, the image is formed by A ' B ' C ' D ' in the corresponding graph, and the first angle and the second angle are angles for refreshing two adjacent images by the display screen. The display screen starts from the first angle and displays the first pixel in the first pixel unit of the display screen until the second angle is reached. Here, the three-dimensional space formed by the first pixel rotated from the first angle to the second angle is a voxel, that is, the three-dimensional space formed by the 8 points ABCDA 'B' C 'D' is a voxel.
As can be seen from fig. 2, since the size of the pixels at the respective positions on the display screen is equal, the pixels with fast rotation speed form large voxels when the display screen rotates around the rotation axis. The rotation speed is related to the distance from the rotation axis, that is, the size of the voxel is related to the distance from the pixel forming the voxel to the rotation axis, and the farther the distance from the rotation axis is, the larger the voxel is, the lower the spatial resolution in the unit volume is, and the poorer the display effect is.
Fig. 3 is a schematic structural diagram of a three-dimensional display device according to an embodiment of the present invention, and referring to fig. 3, the three-dimensional display device includes a plurality of display screens, where the plurality of display screens includes a first display screen 100, a pair of second display screens 200, and a control mechanism 300.
The display screen comprises a first display screen 100 and a pair of second display screens 200, wherein the display surfaces of the pair of second display screens 200 are coplanar, the display surfaces of the pair of second display screens 200 are symmetrical about a center line 00 of the display surface of the first display screen 100, and the center line 00 is positioned in the plane of the display surfaces of the pair of second display screens 200. The control mechanism 300 is configured to control the first display screen 100 and the second display screen 200 to rotate around the center line 00, and the rotation speed of the second display screen 200 is less than the rotation speed of the first display screen 100.
Here, the display surface of the display screen means a surface of the display screen on which an image can be displayed. The reason why the rotation axis around which the first display screen 100 and the second display screen 200 are arranged is set to the center line of the display surface of the first display screen 100 is that: when the rotating shaft is the central line of the display surface, no display blind area exists between the three-dimensional picture formed by the rotation of the display screen and the shaft, which is beneficial to ensuring the integrity of the three-dimensional picture.
In the embodiment of the invention, the display screens of the three-dimensional display device comprise a first display screen and a pair of second display screens, wherein the display surfaces of the pair of second display screens are coplanar, the display surfaces of the pair of second display screens are symmetrical about the central line of the display surface of the first display screen, and the central line is positioned in the plane of the display surfaces of the pair of second display screens. In operation, the control mechanism controls the first display screen and the second display screen to rotate, because the first display screen is arranged between the pair of second display screens, if the rotation speeds of the first display screen and the second display screen are the same, the obtained result is that the voxels generated by the second display screen are larger than the voxels generated by the first display screen, but in the embodiment of the invention, because the rotation speed of the second display screen is smaller than the rotation speed of the first display screen, the voxels generated by the second display screen are reduced. The smaller the voxel, the higher the resolution, and the better the display effect, so the scheme provided by the embodiment of the invention improves the display effect.
When the display surfaces of the first display screen 100 and the second display screen 200 are coplanar, the gap between the display area of the first display screen 100 and the display area of the second display screen 200 is smaller than 1 mm, so that the first display screen 100 and the second display screen 200 can be used as a display screen to display images, and a user can not perceive that the screen of the display device is formed by splicing a plurality of parts.
The display area refers to an area for displaying on the first display screen 100 or the second display screen 200, the conventional display screen generally includes a display area and a peripheral area surrounding the display area, and the entire display screen is generally a display area.
Illustratively, the gap between the first display screen 100 and the second display screen 200 may be smaller than 2 pixels, for example, about 1 pixel, so as to ensure that the gap between the display screens is not noticeable, and at the same time, to ensure that 2 display screens can rotate independently.
Fig. 4 is a schematic structural diagram of a control mechanism according to an embodiment of the present invention, and referring to fig. 4, the control mechanism 300 includes: a first rotating shaft 301, a second rotating shaft 302 and a power assembly 303.
The first rotating shaft 301 is overlapped with the center line 00, and the first display screen 100 is connected with the first rotating shaft 301; the second rotating shaft 302 is overlapped with the center line 00, and the second display screen 200 is connected with the second rotating shaft 302; and a power assembly 303 configured to rotate the first rotating shaft 301 and the second rotating shaft 302.
In this implementation, be used for driving 2 display screens respectively through 2 pivots and rotate to guarantee that 2 display screens can rotate with different slew velocity. 2 pivot is connected with power component again simultaneously for power component can provide power for 2 pivots, thereby finally drives 2 display screens and rotates.
In the embodiment of the present invention, the arrangement of the rotating shaft may be various:
referring to fig. 4 again, the first and second rotation shafts are located at both sides of the first display screen, that is, the first display screen 100 is located between the first and second rotation shafts 301 and 302.
In this implementation manner, the first rotating shaft 301 and the second rotating shaft 302 are both overlapped with the center line 00, and the first rotating shaft 301 and the second rotating shaft 302 are located at two sides of the first display screen 100, so that it is ensured that the first rotating shaft 301 and the second rotating shaft 302 are respectively connected with the two display screens, and it is also ensured that the first rotating shaft 301 and the second rotating shaft 302 are both overlapped with the center line of the first display screen 100.
Fig. 5 is a schematic structural diagram of another control mechanism provided in an embodiment of the present invention, and the difference between fig. 5 and fig. 4 is that the arrangement of the rotating shafts is different, and referring to fig. 5, one of the first rotating shaft 301 and the second rotating shaft 302 is a hollow rotating shaft, and the other of the first rotating shaft 301 and the second rotating shaft 302 is located in the hollow rotating shaft and is concentric with the hollow rotating shaft.
In this implementation manner, the first rotating shaft 301 and the second rotating shaft 302 are coaxially arranged, so that it is ensured that the first rotating shaft 301 and the second rotating shaft 302 are respectively connected with the two display screens, and it is also ensured that the first rotating shaft 301 and the second rotating shaft 302 are both overlapped with the center line of the first display screen 100.
As shown in fig. 5, the second rotating shaft 302 is a hollow rotating shaft, and the first rotating shaft 301 is disposed in the second rotating shaft 302. Of course, in other implementations, the first rotating shaft 301 may be a hollow rotating shaft, and the second rotating shaft 302 may be disposed in the first rotating shaft 301.
In one implementation manner of the embodiment of the present invention, the power assembly 303 includes 2 motors, and the 2 motors are respectively connected to the first rotating shaft 301 and the second rotating shaft 302.
The first rotating shaft 301 and the second rotating shaft 302 are respectively driven to rotate by 2 motors, so that the first display screen 100 and the second display screen 200 are driven to rotate. This can be applied to the control mechanism shown in fig. 4 and 5, and the connection of the motor and the rotating shaft is more convenient when the control mechanism shown in fig. 4 is applied.
In one implementation of the embodiment of the present invention, the power assembly 303 includes a motor, a first transmission mechanism connected between the motor and the first rotating shaft, and a second transmission mechanism connected between the motor and the second rotating shaft. Through controlling the transmission ratio of 2 transmission mechanisms, the same motor can drive 2 rotating shafts to rotate at different speeds. This way can be applied to the control mechanism shown in fig. 4 and 5, and when the control mechanism shown in fig. 5 is applied, the transmission mechanism on the motor is more compact and simpler in structure.
Here, the first transmission mechanism and the second transmission mechanism may be gear transmission mechanisms.
Referring again to fig. 4 and 5, the control mechanism 300 further includes: a first mount 304 and a second mount 305.
The first display screen 100 is connected to the first mounting base 304, and one end of the first rotating shaft 301 is fixed to the first mounting base 304; the second display 200 is connected to the second mounting base 305, and one end of the second rotating shaft 302 is fixed to the second mounting base 305.
In this implementation, the connection of the rotating shaft and the display screen is more easily realized by providing two mounting seats.
Illustratively, the first display screen 100 is connected to the first mounting base 304 through one side; the second display 200 is attached to the second mounting base 305 through one side.
As shown in fig. 4, two mounting seats may be respectively located at both sides of the first display screen 100. The first mounting base 304 is connected to the first display 100 and the first shaft 301, and the second mounting base 305 is connected to the second display 200 and the second shaft 302.
As shown in fig. 5, the two mounts are located on the same side of the first display screen 100. The first mounting seat 304 is connected with the first rotating shaft 301, the second mounting seat 305 is connected with the second rotating shaft 302, and a gap is formed between the first mounting seat 304 and the second mounting seat 305, so that the rotation of the first mounting seat 304 and the second mounting seat 305 is prevented from being interfered.
In the embodiment of the present invention, the rotation speed of the second display 200 is greater than 24 rotations per second and greater than the minimum threshold of persistence of vision, so as to prevent the user from feeling the flicker of the three-dimensional picture.
Optionally, the three-dimensional display device may further include a base for mounting the rotation shaft and the power assembly.
Fig. 6 shows a schematic structural view of a base. Referring to fig. 6, the base may be used for mounting the structure shown in fig. 4, and includes a lower base 306, an upper base 307 and a connecting frame 308, the lower base 306 and the upper base 307 are connected by the connecting frame 308, the first rotating shaft 301 and the corresponding power assembly 303 are mounted on the upper base 307, and the second rotating shaft 302 and the corresponding power assembly 303 are mounted on the lower base 306.
Fig. 7 shows a schematic structural view of another base. Referring to fig. 7, the base may be used to mount the structure shown in fig. 5, and includes a lower base 306, and a first rotating shaft 301, a second rotating shaft 302 and a corresponding power assembly 303 are mounted on the lower base 306.
Fig. 8 is a schematic structural diagram of another three-dimensional display device according to an embodiment of the present invention, referring to fig. 8, the plurality of display panels further includes a pair of third display panels 400, the display surfaces of the pair of third display panels 400 are coplanar, the display surfaces of the pair of third display panels 400 are symmetrical with respect to a center line 00, the first display panel 100 and the second display panel 200 are located between the pair of third display panels 400, and the center line 00 is located in a plane in which the display surfaces of the pair of third display panels 400 are located;
and the control mechanism 300 is further configured to control the third display screen 400 to rotate around the center line 00, and the rotation speed of the third display screen 400 is lower than that of the second display screen 200.
In this implementation, the display screens of the three-dimensional display device further include a pair of third display screens, wherein the display surfaces of the pair of third display screens are coplanar, the display surfaces of the pair of third display screens are symmetrical with respect to a center line of the display surface of the first display screen, and the center line is located in a plane where the display surfaces of the pair of third display screens are located. When the display device works, the control mechanism controls the first display screen, the second display screen and the third display screen to rotate, if the rotation speeds of the first display screen, the second display screen and the third display screen are the same, the obtained result is that the voxel generated by the second display screen is larger than the voxel generated by the first display screen, and the voxel generated by the third display screen is larger than the voxel generated by the second display screen.
Meanwhile, the display screen is split into more parts, so that the voxel size of each part can be further averaged, and the display resolution is ensured.
When the display surfaces of the second display screen 200 and the third display screen 400 are coplanar, the gap between the display area of the second display screen 200 and the display area of the third display screen 400 is less than 1 mm. A gap is formed between the adjacent edges of the second display screen 200 and the third display screen 400, and the size of the gap is smaller than a set value, so that the second display screen 200 and the third display screen 400 can be used as a display screen to display pictures, and a user can not perceive that the screen of the display device is formed by splicing a plurality of parts.
Illustratively, the gap between the second display screen 200 and the third display screen 400 may be smaller than 2 pixels, for example, about 1 pixel, so as to ensure that the gap between the display screens is not noticeable, and at the same time, to ensure that 2 display screens can rotate independently.
In the embodiment of the invention, the rotation speed of the third display screen is greater than 24 revolutions per second and greater than the minimum threshold value of persistence of vision, so that a user is prevented from feeling flicker of a three-dimensional picture.
When the three-dimensional display device includes the third display screen 400, the control mechanism 300 also needs to set a rotating shaft, a mounting seat and a power component corresponding to the third display screen 400, and the implementation manner is the same as that of the first display screen and the second display screen.
Of course, the three-dimensional display device in the embodiment of the present invention may further include more display screens arranged in pairs, as long as the display screens are arranged in the manner of the second display screen and the third display screen, and the rotation speed is satisfied that the closer the rotation speed is to the center line of the first display screen, the higher the rotation speed is.
In the embodiment of the invention, the area of each display screen in the three-dimensional display device can be set according to requirements, for example, the area ratio of the second display screen or the third display screen to the first display screen is 1/2-2.
In the embodiment of the invention, the widths of the display screens are the same, so that the area ratio of any display screen to the first display screen, namely the length ratio of any display screen to the first display screen.
In the embodiment of the present invention, the rotation speed ratio of each display screen may be expressed as a distance ratio between a side of the display screen far from the central axis and the central axis: the ratio of the rotation speed of the second or third display screen to the first display screen is the ratio of half the length of the first display screen (i.e., the distance from the side of the first display screen away from the central axis to the center line) to the distance from the side of the second or third display screen away from the central axis to the center line. The design can ensure that the resolution ratio of the display screen far away from the central line is improved, and the corresponding rotating speed can be set according to the area division of each display screen, so that the rotating speed is related to the area of the display screen.
For example, referring to fig. 3, the ratio of the rotation speeds of the first display screen 100 and the second display screen 200 is equal to the ratio of the distance a from the side of the second display screen 200 far from the center line 00 to the distance B from the side of the first display screen 100 far from the center line 00 to the center line 00.
For example, if the length of the first display screen is X and the width of the second display screen is Y, the distance from the side edge of the first display screen to the center line is X/2, and the distance from the side edge of the second display screen to the center line is Y + X/2 (the gap size can be ignored), the rotation speed ratio of the second display screen to the first display screen is (X/2): (Y + X/2).
In order to ensure the display precision, the refresh rate of the display screen is more than 360Hz/r in the process of one rotation of the motor. Taking 360Hz/r as an example, the display screen can refresh images once when the motor rotates for 1 degree, and a three-dimensional picture is formed by refreshing 360 images. Since each turn of the display screen is refreshed more than 360 times, the voxels of the three-dimensional picture displayed in this way are small enough and the resolution is high, for example, a 640 × 480 resolution screen, and the spatial resolution of each frame of the three-dimensional picture is as high as 360 × 640 × 480 — 110592000.
Since the motor rotates for more than 24 turns in 1 second, the display refresh rate of the display screen needs to be as high as 24 × 360, and a display screen capable of meeting the refresh rate can be a Light Emitting Diode (LED) screen, such as a Micro LED screen, an active driving organic light emitting diode (AMOLED) screen, a passive driving organic light emitting diode (PMOLED) screen, and the like.
Fig. 9 is a flowchart of a method for controlling a three-dimensional display device according to an embodiment of the present invention, and referring to fig. 9, the method is applied to the three-dimensional display device shown in any one of fig. 2 to 5, and the method includes:
and step 501, controlling the rotation of each display screen of the three-dimensional display device.
In this step, if the three-dimensional display device includes a first display screen and a second display screen, the first display screen and the second display screen are respectively controlled to rotate. And if the three-dimensional display device comprises a first display screen, a second display screen and a third display screen, respectively controlling the first display screen, the second display screen and the third display screen to rotate. If more display screens are included, each display screen is also controlled to rotate.
The rotating speed of each display screen is as follows: the first display screen is larger than the second display screen and larger than the third display screen, and so on, that is, the closer to the center line of the first display screen, the greater the rotation speed.
In the embodiment of the present invention, controlling rotation of each display screen of a three-dimensional display device includes: and controlling the motor to rotate. When two or more motors exist, the motors are respectively controlled to rotate at different rotating speeds. When only one motor exists, the motor is controlled to rotate.
The angle is an angle of rotation of the display screen with the center line as a rotation center, and the range of the angle can be 0-180 degrees. Here, any orientation may be 0 degrees.
Since the three-dimensional display device needs to display a three-dimensional picture, that is, a 3D model, when displaying, the three-dimensional model needs to be cut first to obtain a plurality of cutting planes. Each cutting plane comprises a plurality of points corresponding to a plurality of points of a frame to be displayed by the display screen. That is, the display screen needs to refresh a plurality of images in each turn. And setting a time sequence signal according to the angle corresponding to each cutting plane and the rotating speed of the display screen, and refreshing a displayed image when the display screen rotates to each angle, wherein the image is displayed as the front cutting plane.
In the related art, the display screen is of an integrated structure, so that the display screen can display two-dimensional pictures corresponding to all the angles when the display screen rotates to different angles. In the embodiment of the present invention, since there are a plurality of display screens, it is necessary to ensure that the displayed images of the display screens are the parts of the same image when the display screens are rotated to the same angle. For example, when each display screen is rotated to a position of 90 degrees, the displayed picture is each part of the same image.
Here, the three-dimensional display device may display a static 3D image or a dynamic 3D image.
When the three-dimensional display device displays a static 3D image, the static 3D image only has one frame of 3D image, so that the time of the frame of 3D image is infinite, the three-dimensional display device works, and the displayed images are the same as long as any display screen reaches a set angle. For example, the first display screen displays the same image every time it is rotated to 45 degrees.
When the three-dimensional display device displays dynamic 3D images, because the dynamic 3D images have a plurality of frames in one second, the display screen rotates at least one circle in the display process of each frame of image. The number of turns of one second rotation may be divided by the number of dynamic picture frames to obtain the number of turns of the display screen corresponding to each frame image, so that the picture is displayed during the number of turns.
For example, the first display screen and the second display screen rotate for 48 and 24 turns per second, respectively, and the number of frames of the dynamic 3D image per second is 24 frames. The two-dimensional image displayed by each circle of the first display screen belongs to one frame of 3D image, the two-dimensional image displayed by each 2 circles of the second display screen belongs to the same frame of 3D image, and the two-dimensional image displayed by the first circle and the two-dimensional image displayed by the second circle in the 2 circles are the same.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A three-dimensional display device, comprising:
a plurality of display screens, wherein the plurality of display screens comprises a first display screen (100) and a pair of second display screens (200), the display surfaces of the pair of second display screens (200) are coplanar, the display surfaces of the pair of second display screens (200) are symmetrical about a center line (00) of the display surface of the first display screen (100), and the center line (00) is positioned in the plane of the display surfaces of the pair of second display screens (200);
a control mechanism (300) configured to control the first display screen (100) and the second display screen (200) to rotate around the center line (00), wherein the rotation speed of the second display screen (200) is less than that of the first display screen (100), and the distance between the second display screen (200) and the center line (00) is greater than that between the first display screen (100) and the center line (00).
2. The three-dimensional display device according to claim 1, wherein the ratio of the rotational speeds of the first display screen (100) and the second display screen (200) is equal to the ratio of the distance from the side of the second display screen (200) away from the center line (00) to the distance from the side of the first display screen (100) away from the center line (00) to the center line (00).
3. The three-dimensional display device according to claim 1, wherein the control mechanism (300) comprises:
a first rotating shaft (301) coinciding with the center line (00), the first display screen (100) being connected with the first rotating shaft (301);
a second rotation axis (302) coinciding with the centre line (00), the second display screen (200) being connected to the second rotation axis (302);
a power assembly (303) configured to rotate the first rotating shaft (301) and the second rotating shaft (302).
4. The three-dimensional display device according to claim 3, wherein the first rotation axis (301) and the second rotation axis (302) are located at both sides of the first display screen (100).
5. The three-dimensional display device according to claim 3, wherein one of the first rotating shaft (301) and the second rotating shaft (302) is a hollow rotating shaft, and the other of the first rotating shaft (301) and the second rotating shaft (302) is positioned in the hollow rotating shaft and is concentric with the hollow rotating shaft.
6. The three-dimensional display device according to claim 3, wherein the control mechanism (300) further comprises:
the first mounting seat (304), the first display screen (100) is connected to the first mounting seat (304), and one end of the first rotating shaft (301) is fixed with the first mounting seat (304);
the second mounting seat (305), the second display screen (200) is connected on the second mounting seat (305), and one end of the second rotating shaft (302) is fixed with the second mounting seat (305).
7. The three-dimensional display device according to claim 1, wherein the plurality of display screens further comprises:
a pair of third display screens (400), the display surfaces of the pair of third display screens (400) being coplanar, the display surfaces of the pair of third display screens (400) being symmetrical about the center line (00), the first display screen (100) and the second display screen (200) being located between the pair of third display screens (400), the center line (00) being located in the plane of the display surfaces of the pair of third display screens (400);
the control mechanism (300) is further configured to control the third display screen (400) to rotate around the center line (00), and the rotation speed of the third display screen (400) is smaller than that of the second display screen (200).
8. The three-dimensional display device according to any one of claims 1 to 7, wherein when the display surfaces of the plurality of display panels are coplanar, a gap between display areas of adjacent display panels of the plurality of display panels is less than 1 mm.
9. The three-dimensional display device according to any one of claims 1 to 7, wherein the display panel with the slowest rotation speed among the plurality of display panels has a rotation speed of more than 24 rotations per second.
10. A three-dimensional display device control method applied to the three-dimensional display device according to any one of claims 1 to 9, the method comprising:
controlling each display screen of the three-dimensional display device to rotate;
and controlling the display of each display screen of the three-dimensional display device, wherein each display screen displays each part of the same two-dimensional image when rotating to the same angle within the display time of one frame of three-dimensional image, and the three-dimensional image is composed of a plurality of two-dimensional images.
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