Aerial Imaging System

Abstract

The aerial imaging system includes a display assembly, an aerial imaging assembly located on one side of the display assembly, a reflective element located on one side of the display assembly and tilted, where the display assembly forms a virtual image of the display assembly on the other side of the reflective element, and the virtual image of the display assembly forms an aerial image on the other side of the aerial imaging assembly via the aerial imaging assembly, and a drive assembly connected to the display assembly and the reflective element, respectively, for driving and rotating the display assembly and the reflective element.

Description

[Technical field]

[0001] The present invention relates to the field of aerial imaging technology, and in particular to an aerial imaging system. [Background technology]

[0002] With the rapid development of the 5G era, the concept of "metaverse" is an important interaction method in the next-generation high-speed information era. Virtual reality (VR) / Augmented reality (AR) / Mixed reality (MR) technologies realize virtual and real interaction through wearable devices. Display devices, as an important component of many interaction devices, have already become indispensable electronic devices for communication, exchange, study, entertainment, shopping, etc. Aerial display technology can realize aerial imaging of display devices through micro-light control device elements, and can realize virtual and real interaction without the need for any wearable devices. Therefore, aerial display technology occupies an important position in next-generation display devices. At present, aerial displays at home and abroad are applied in many scenes, including vehicle-mounted, residential, public, etc. Several man-machine interaction plans that increase user experience are also provided. Currently, the entire display system increases the aerial display depth of the image by adjusting the distance between the display screen and the aerial imaging assembly, greatly improving the user experience; however, the volume of the entire display system increases, reducing the user's immersive feeling and product competitiveness. Summary of the Invention [Problem to be solved by the invention]

[0003] If the aerial display depth of the image is increased by adjusting the distance between the display screen and the aerial imaging assembly to greatly improve the user experience, the volume of the entire display system will increase, which will reduce the user's immersive experience and product competitiveness. [Means for solving the problem]

[0004] In view of this, the present invention provides an aerial imaging system with small volume and large aerial viewing depth of the image.

[0005] The technical solutions provided by the present invention to solve the above problems are as follows:

[0006] An aerial imaging system used to form an aerial image, comprising: a display assembly; an aerial imaging assembly located on one side of the display assembly; a reflective element located on one side of the display assembly and inclined in a direction approaching the display assembly, wherein the display assembly forms a virtual image of the display assembly on the other side of the reflective element, and the virtual image of the display assembly forms the aerial image on the other side of the aerial imaging assembly via the aerial imaging assembly; and a drive assembly connected to the display assembly and the reflective element, respectively, and driving the display assembly and the reflective element to rotate clockwise or counterclockwise, wherein the virtual image of the display assembly and the display assembly are symmetrical about the reflective element, the positions of the virtual image of the display assembly and the aerial imaging assembly are opposite, and the aerial image and the virtual image of the display assembly are symmetrical about the aerial imaging assembly.

[0007] In any embodiment of the present invention, when the display assembly and the reflective element do not rotate, it is defined as a first state, and after the display assembly and the reflective element rotate, it is defined as a second state, the display assembly in the first state forms a first virtual image on the other side of the reflective element, and the display assembly in the second state forms a second virtual image on the other side of the reflective element, the first virtual image and the second virtual image are arranged parallel to and spaced apart along a first direction.

[0008] In an optional embodiment of the present invention, the display assembly in the first state is perpendicular to the first virtual image, and an included angle between the reflective element in the first state and the display assembly in the first state is 45°.

[0009] In any embodiment of the present invention, when the driving assembly drives the display assembly to rotate by a first angle β, and the driving assembly drives the reflective element to rotate by a second angle α, the relationship satisfying 0°<α<45°, 0°<β<90° and β=2α.

[0010] In any embodiment of the present invention, when the driving assembly drives the display assembly and the reflective element to rotate clockwise respectively, a distance from the second virtual image to the aerial imaging assembly is greater than a distance from the first virtual image to the aerial imaging assembly.

[0011] In any embodiment of the present invention, when the driving assembly drives the display assembly and the reflective element to rotate counterclockwise respectively, a distance from the second virtual image to the aerial imaging assembly is smaller than a distance from the first virtual image to the aerial imaging assembly.

[0012] In any embodiment of the present invention, the first virtual image forms a first aerial image on the other side of the aerial imaging assembly via the aerial imaging assembly, and the second virtual image forms a second aerial image on the other side of the aerial imaging assembly via the aerial imaging assembly, and the first aerial image and the second aerial image are arranged parallel to and spaced apart along a second direction perpendicular to the first direction.

[0013] In any embodiment of the present invention, the aerial imaging assembly includes a first reflective array and a second reflective array, the second reflective array is located on the first reflective array, the first reflective array includes a plurality of first reflective sheets arranged at intervals, the second reflective array includes a plurality of second reflective sheets arranged at intervals, the extension direction of the first reflective sheet is different from the extension direction of the second reflective sheet, and light rays emitted by a virtual image of the display assembly are reflected a first time on the first reflective sheet, the resulting first reflected light rays are reflected a second time on the second reflective sheet, and the resulting second reflected light rays form the aerial image.

[0014] In an optional embodiment of the present invention, the inclination angle of the first reflective sheet with respect to the display assembly is 45°.

[0015] In any embodiment of the present invention, the first reflective sheet and the virtual image of the display assembly are positioned opposite each other.

[0016] In any embodiment of the present invention, the aerial imaging assembly includes: a beam splitting structure located on one side of the display assembly; and a retroreflective structure located on one side of the beam splitting structure and inclined toward the beam splitting structure, wherein the virtual image of the display assembly and the retroreflective structure are located on the same side of the beam splitting structure, a light ray emitted by the virtual image of the display assembly that enters the beam splitting structure is reflected by the retroreflective structure, and a virtual image of the display assembly is formed by a light ray partly retroreflected by the retroreflective structure, and the virtual image of the display assembly and the aerial image are symmetrical with respect to the beam splitting structure.

[0017] In any embodiment of the present invention, the beam splitting structure is perpendicular to a virtual image of the display assembly.

[0018] In any embodiment of the present invention, the aerial imaging system further includes a fixed assembly, and the driving assembly, the beam splitting structure and the retroreflective structure are each fixed to the fixed assembly.

[0019] In any embodiment of the present invention, the reflective element is a planar reflector.

[0020] In any embodiment of the present invention, the included angle between the reflective element and a virtual image of the display assembly in the first state is an obtuse angle.

[0021] In any embodiment of the present invention, the included angle between the reflective element and a virtual image of the display assembly in the first state is an acute angle.

[0022] In any embodiment of the present invention, the reflective element includes a connecting end and a first free end, the connecting end being connected to the drive assembly, and the drive assembly being configured to drive the reflective element to rotate about the connecting end.

[0023] In any embodiment of the present invention, the drive assembly includes a rotation shaft, the display assembly is fixed to the rotation shaft, the display assembly includes a second free end, a third free end and an intermediate portion connected to the second free end and the third free end, the rotation shaft is fixedly connected to the intermediate portion, and the drive assembly drives and rotates the rotation shaft, such that the display assembly rotates around the rotation shaft as a rotation center.

[0024] In any embodiment of the present invention, the aerial imaging system further comprises a fixed assembly, and the drive assembly and the aerial imaging assembly are each fixed to the fixed assembly.

[0025] In any embodiment of the present invention, the first virtual image forms a first aerial image on the other side of the aerial imaging assembly via the aerial imaging assembly, and the second virtual image forms a second aerial image on the other side of the aerial imaging assembly via the aerial imaging assembly, and the first aerial image and the second aerial image are arranged parallel and spaced apart along a second direction parallel to the first direction. Effect of the Invention

[0026] The aerial imaging system provided by the present invention includes a reflecting element on one side of a display assembly, and a driving assembly drives the display assembly and the reflecting element to rotate clockwise or counterclockwise, so that the reflecting element forms a virtual image of the display assembly symmetrical with respect to the reflecting element of the display assembly on the other side opposite to the display assembly, and the virtual image of the display assembly forms an aerial image on the other side of the aerial imaging assembly through the aerial imaging assembly. Since the display assembly and the virtual image of the display assembly are symmetrical with respect to the reflecting element, and the virtual image of the display assembly and the aerial image are symmetrical with respect to the aerial imaging assembly, the distance between the virtual images of the display assembly at different rotation angles can be adjusted by adjusting the rotation angles of the display assembly and the reflecting element respectively, so that the aerial image can be displaced greatly, and the display depth of the aerial image of the aerial imaging system can be increased. Therefore, the aerial imaging system provided by the present invention does not require the movement of the display assembly, and can adjust the display depth of the aerial image by simply rotating the display assembly and the reflecting element, so that a large display depth can be obtained in a small space, which is advantageous for reducing the volume of the aerial imaging system. [Brief description of the drawings]

[0027] In order to more clearly describe the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings that need to be used in the description of the embodiments. It is clear that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

[0028] [Figure 1] FIG. 1 is a structural schematic diagram of an aerial imaging system provided by a first embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram of ray paths for the aerial imaging system of FIG. 1. [Diagram 3] FIG. 3 is a structural schematic diagram of the aerial imaging assembly of FIG. 2. [Figure 4] FIG. 4 is a structural schematic diagram of the aerial imaging assembly of FIG. 3 from another angle. [Diagram 5]FIG. 2 is a structural schematic diagram of an aerial imaging system provided by a second embodiment of the present invention. [Figure 6] FIG. 6 is a schematic diagram of the ray paths of the aerial imaging system of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The following will clearly and thoroughly describe the technical solutions in the embodiments of the present invention in combination with the drawings of the embodiments of the present invention. It is clear that the described embodiments are only some embodiments of the present invention, and are not all embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without creative efforts are all within the protection scope of the present invention.

[0030] In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by technical terms such as "upper", "lower", etc., is based on the orientation or positional relationship shown in the drawings, and is merely for the purpose of explaining and simplifying the description of the present invention, and does not indicate or imply that the referred device or component is required to have a specific orientation, and is constructed and operated in a specific orientation, and cannot be understood as limiting the present invention. In addition, the technical terms "first" and "second" are merely for explanatory purposes, and cannot be understood as meaning or suggesting relative importance or the number of technical elements represented. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the aforementioned features. In the present description, unless specifically limited, "plurality" means two or more.

[0031] The present invention may repeat reference numerals and / or characters in different embodiments; such repetition is for purposes of simplicity and clarity and does not in itself indicate a relationship between each embodiment and / or installation discussed.

[0032] The aerial imaging system provided by the present invention will be described in detail below in combination with specific embodiments and drawings.

[0033] Referring to Figures 1 to 4, a first embodiment of the present invention provides an aerial imaging system 100, which includes a display assembly 10, a reflective element 20, an aerial imaging assembly 30 and a driving assembly 40, wherein the aerial imaging assembly 30 is located on one side of the display assembly 10, the reflective element 20 is located on one side of the display assembly 10 and inclined in a direction approaching the display assembly 10, and the driving assembly 40 is respectively connected to the display assembly 10 and the reflective element 20.

[0034] The light output surface of the display assembly 10 faces the reflective element 20 .

[0035] The reflective element 20 has an imaging function, specifically, the display assembly 10 can form a virtual image of the display assembly 10 on the other side of the reflective element 20. The virtual image of the display assembly 10 and the display assembly 10 are symmetrical with respect to the reflective element 20, that is, the virtual image of the display assembly 10 and the display assembly 10 have the same shape and size.

[0036] In any embodiment of the present invention, the reflective element 20 is a plane reflecting mirror, which is the only optical element that can form a perfect image and does not change the concentricity of the beams, so that diverging concentric beams remain diverging concentric beams and converging concentric beams remain converging concentric beams after the beams reflect off the plane mirror.

[0037] The aerial imaging assembly 30 and the virtual image of the display assembly 10 are positioned opposite to each other, and the aerial imaging assembly 30 is used to reflect the virtual image of the display assembly 10 to form an aerial image 50 on the other side of the aerial imaging assembly 30. The aerial image 50 and the virtual image of the display assembly 10 are symmetrical with respect to the aerial imaging assembly 30.

[0038] In this embodiment, the aerial imaging assembly 30 is located on one side of the reflective element 20 and is inclined in a direction approaching the virtual image of the display assembly 10, and the reflective element 20 is located between the aerial imaging assembly 30 and the virtual image of the display assembly 10.

[0039] 2 to 4, in this embodiment, the aerial imaging assembly 30 includes a first reflective array 31 and a second reflective array 32, the second reflective array 32 is located on the first reflective array 31, the first reflective array 31 includes a plurality of first reflective sheets 311 arranged at intervals, the second reflective array 32 includes a plurality of second reflective sheets 321 arranged at intervals, the extension direction of the first reflective sheet 311 is different from the extension direction of the second reflective sheet 321, the light ray L1 emitted by the virtual image of the display assembly 10 is reflected a first time on the first reflective sheet 311, the resulting first reflected light ray L2 is incident on the second reflective sheet 321 and reflected a second time, and the resulting second reflected light ray L3 generates the aerial image 50.

[0040] In this embodiment, the inclination angle of the first reflective sheet 311 with respect to the display assembly 10 is 45°, and the aerial imaging assembly 30 thus configured can reduce the probability of ghost images appearing in the aerial image 50.

[0041] In this embodiment, the virtual image of the display assembly 10 and the first reflective sheet 311 are positioned opposite to each other, that is, the virtual image of the display assembly 10 faces the first reflective sheet 311.

[0042] The driving assembly 40 is used to drive the display assembly 10 and the reflective element 20 to rotate clockwise or counterclockwise to adjust the rotation angles of the display assembly 10 and the reflective element 20 respectively, and adjust the distance between the virtual images of the display assembly 10 at different rotation angles, to largely displace the aerial image 50, and to increase the display depth of the aerial image 50 of the aerial imaging system 100. The aerial imaging system 100 does not require the movement of the display assembly 10, and can adjust the display depth of the aerial image 50 only by rotating the display assembly 10 and the reflective element 20, so that a large display depth can be obtained in a small space, which is advantageous to reduce the volume of the aerial imaging system 100.

[0043] In this embodiment, when the display assembly 10 and the reflective element 20 do not rotate, it is defined as a first state, and after the display assembly 10 and the reflective element 20 rotate, it is defined as a second state. The solid lines of the symbols 10 and 20 in FIG. 2 represent the display assembly 10 and the reflective element 20 in the first state, and the dashed lines represent the display assembly 10 and the reflective element 20 in the second state.

[0044] The display assembly 10 in a first state forms a first virtual image 61 on the other side of the reflective element 20, and the display assembly 10 in a second state forms a second virtual image 62 on the other side of the reflective element 20, the first virtual image 61 and the second virtual image 62 being arranged parallel to and spaced apart along a first direction Y.

[0045] In this embodiment, the display assembly 10 in the first state is perpendicular to the first virtual image 61, and the included angle between the reflective element 20 in the first state and the display assembly 10 in the first state is 45°.

[0046] In this embodiment, the display assembly 10 in the first state is vertical, the virtual image of the display assembly 10 is horizontal, and the aerial image 50 is vertical. The included angle between the reflective element 20 and the virtual image of the display assembly 10 in the first state is an acute angle.

[0047] In another embodiment, the display assembly 10 in the first state is horizontal and correspondingly, the virtual image of the display assembly 10 is horizontal and the aerial image 50 is vertical. The included angle between the reflective element 20 and the virtual image of the display assembly 10 in the first state is an obtuse angle.

[0048] In this embodiment, when the driving assembly 40 drives the display assembly 10 to rotate by a first angle β, and the driving assembly 40 drives the reflective element 20 to rotate by a second angle α, the following relationships are satisfied: 0°<α<45° (Equation 1), 0°<β<90° (Equation 2), and β=2α (Equation 3).

[0049] The above relational expression (Equation 3) can be derived through the following process.

[0050] The extension line of the display assembly 10 in the second state, the extension line of the second virtual image, and the continuous line between the rotation center of the display assembly 10 and the center of the second virtual image constitute an isosceles triangle, the extension line of the first virtual image is parallel to the extension line of the second virtual image, the extension line of the reflective element 20 in the second state is the bisector of one angle of the isosceles triangle, and the extension line of the display assembly 10 in the first state is the bisector of another angle of the isosceles triangle. As can be seen from the characteristics of a triangle, in Figure 2, ∠1=90°-β, ∠2=∠3=45°-α, ∠1=∠2+∠3, and 90°-β=2(45°-α), β=2α.

[0051] In an embodiment of the present invention, when the driving assembly 40 drives the display assembly 10 and the reflective element 20 to rotate clockwise respectively, the distance from the second virtual image 62 to the aerial imaging assembly 30 is greater than the distance from the first virtual image 61 to the aerial imaging assembly 30.

[0052] In another embodiment of the present invention, when the driving assembly 40 drives the display assembly 10 and the reflective element 20 to rotate counterclockwise respectively, the distance from the second virtual image 62 to the aerial imaging assembly 30 is smaller than the distance from the first virtual image 61 to the aerial imaging assembly 30.

[0053] In an embodiment of the present invention, the first virtual image 61 forms a first aerial image 51 on the other side of the aerial imaging assembly 30 through the aerial imaging assembly 30, and the second virtual image 62 forms a second aerial image 52 on the other side of the aerial imaging assembly 30 through the aerial imaging assembly 30, and the first aerial image 51 and the second aerial image 52 are parallel to and arranged at an interval along a second direction X perpendicular or parallel to the first direction Y.

[0054] Referring again to FIG. 1, the drive assembly 40 includes a first drive member 41, a second drive member 42 and a rotating shaft 43, the first drive member 41 is connected to one end of the reflective element 20 and is used to drive the reflective element 20 to rotate the second angle α, the second drive member 42 is fixedly connected to one end of the rotating shaft 43, the other end of the rotating shaft 43 remote from the second drive member 42 is connected to the display assembly 10, the second drive member 42 is used to drive the rotating shaft 43 to rotate, and the rotating shaft 43 is used to drive and rotate the display assembly 10.

[0055] Specifically, the reflective element 20 includes a connecting end 21 and a first free end 22, the connecting end 21 is connected to the driving assembly 40, and the driving assembly 40 drives the reflective element 20 to rotate around the connecting end 21.

[0056] Specifically, the display assembly 10 includes a second free end 11, a third free end 12 and an intermediate part 13 connected to the second free end 11 and the third free end 12, the rotation axis 43 is fixedly connected to the intermediate part 13, and the display assembly 10 rotates around the rotation axis 43 as a rotation center.

[0057] 1 , the aerial imaging system 100 further includes a fixed assembly 70, and the driving assembly 40 and the aerial imaging assembly 30 are respectively fixed to the fixed assembly 70. Specifically, the fixed assembly 70 includes a first fixed part 71 and a second fixed part 72 vertically connected to the first fixed part 71, the driving assembly 40 is fixed to the first fixed part 71, the aerial imaging assembly 30 is fixed to the second fixed part 72, the reflective element 20 is inclined with respect to the first fixed part 71 and extends toward the second fixed part 72, and the aerial imaging assembly 30 is inclined with respect to the second fixed part 72 and extends toward the first fixed part 71.

[0058] 5 and 6, a second embodiment of the present invention provides an aerial imaging system 200, the structure of which is similar to that of the aerial imaging system 100, and the aerial imaging system 200 also includes a display assembly 10, a reflective element 20, an aerial imaging assembly 30 and a driving assembly 40, and the structures and positional relationship of the display assembly 10, the reflective element 20 and the driving assembly 40 are the same as those of the display assembly 10, the reflective element 20 and the driving assembly 40 of the aerial imaging system 100. The overall positional relationship between the aerial imaging assembly 30 and the display assembly 10 is also the same. The difference between the structure of the aerial imaging system 200 and the aerial imaging system 100 is that the aerial imaging assembly 30 includes a beam splitting structure 33 and a retroreflective structure 34, the beam splitting structure 33 is located on one side of the display assembly 10, the retroreflective structure 34 is located on one side of the beam splitting structure 33 and is inclined in a direction approaching the beam splitting structure 33, the virtual image of the display assembly 10 and the retroreflective structure 34 are located on the same side of the beam splitting structure 33, the light emitted by the virtual image of the display assembly 10 enters the beam splitting structure 33 and is reflected by the beam splitting structure 33 to the retroreflective structure 34, and a virtual image of the display assembly 10 is formed by the light partly retroreflected by the retroreflective structure 34, and the virtual image of the display assembly 10 and the aerial image 50 are symmetrical with respect to the beam splitting structure 33. The reflective element 20 and the retroreflective structure 34 are located on the same side of the beam splitting structure 33 .

[0059] In this embodiment, the beam splitting structure 33 is It is perpendicular to the virtual image of 10.

[0060] A portion of the light incident on the beam splitting structure 33 is reflected and another portion of the light is transmitted through the beam splitting structure 33. A light ray incident on the retroreflective structure 34 can return in the opposite direction from the vicinity of the incident light ray.

[0061] In this embodiment, the display assembly 10 in the first state is horizontal, and the virtual image of the display assembly 10 and the aerial image 50 are both vertical. The included angle between the reflective element 20 and the virtual image of the display assembly 10 in the first state is an obtuse angle.

[0062] Of course, in other embodiments, the display assembly 10 in the first state may be vertical, in which case the virtual image of the display assembly 10 is horizontal and the aerial image 50 is vertical. The included angle between the reflective element 20 and the virtual image of the display assembly 10 in the first state is an acute angle.

[0063] The fixed assembly 70 of the aerial imaging system 200 further includes a third fixed portion 73 and a fourth fixed portion 74, where the third fixed portion 73 is perpendicularly connected to the first fixed portion 71 and parallel to the second fixed portion 72. One end of the fourth fixed portion 74 is fixedly connected to the first fixed portion 71 and the second fixed portion 72, and the other end is fixed to the retroreflective structure 34. The driving assembly 40 is fixed to the third fixed portion 73, the beam splitting structure 33 and the retroreflective structure 34 are both fixed to the second fixed portion 72, and the retroreflective structure 34 is also fixed to the fourth fixed portion 74.

[0064] The aerial imaging system provided by the present invention includes a reflecting element on one side of a display assembly, and a driving assembly drives the display assembly and the reflecting element to rotate clockwise or counterclockwise, so that the reflecting element forms a virtual image of the display assembly symmetrical with respect to the reflecting element of the display assembly on the other side opposite to the display assembly, and the virtual image of the display assembly forms an aerial image on the other side of the aerial imaging assembly through the aerial imaging assembly. Since the display assembly and the virtual image of the display assembly are symmetrical with respect to the reflecting element, and the virtual image of the display assembly and the aerial image are symmetrical with respect to the aerial imaging assembly, the distance between the virtual images of the display assembly at different rotation angles can be adjusted by adjusting the rotation angles of the display assembly and the reflecting element respectively, so that the aerial image can be displaced greatly, and the display depth of the aerial image of the aerial imaging system can be increased. Therefore, the aerial imaging system provided by the present invention does not require the movement of the display assembly, and can adjust the display depth of the aerial image by simply rotating the display assembly and the reflecting element, so that a large display depth can be obtained in a small space, which is advantageous for reducing the volume of the aerial imaging system.

[0065] As described above, the present invention has been disclosed above by way of preferred embodiments, but the above preferred embodiments are not intended to limit the present invention, and a person skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the present invention, and therefore the scope of protection of the present invention is based on the scope defined by the claims.

Claims

1. 1. An aerial imaging system for use in forming an aerial image, the aerial imaging system comprising: A display assembly; a beam splitting structure located on one side of the display assembly; an aerial imaging assembly including a retroreflective structure located on one side of the beam splitting structure and tilted toward the beam splitting structure; a reflective element located on one side of the display assembly and tilted toward the display assembly, the display assembly forming a virtual image of the display assembly on the other side of the reflective element, and the virtual image of the display assembly forming the aerial image on the other side of the aerial imaging assembly through the aerial imaging assembly; a drive assembly connected to the display assembly and the reflective element, respectively, for driving the display assembly and the reflective element to rotate clockwise or counterclockwise; An aerial imaging system, in which the virtual image of the display assembly and the display assembly are symmetrical with respect to the reflective element, the virtual image of the display assembly and the retroreflective structure are located on the same side of the beam splitting structure, light rays emitted by the virtual image of the display assembly that are incident on the beam splitting structure are reflected by the retroreflective structure, and a virtual image of the display assembly is formed by light rays that are partially retroreflected by the retroreflective structure, and the virtual image of the display assembly and the aerial image are symmetrical with respect to the beam splitting structure.

2. 2. The aerial imaging system of claim 1, wherein a first state is defined when the display assembly and the reflective element do not rotate, and a second state is defined after the display assembly and the reflective element rotate, the display assembly in the first state forms a first virtual image on the other side of the reflective element, and the display assembly in the second state forms a second virtual image on the other side of the reflective element, the first virtual image and the second virtual image being arranged parallel to and spaced apart from each other along a first direction.

3. 3. The aerial imaging system of claim 2, wherein the display assembly in the first state is perpendicular to the first virtual image, and an included angle between the reflective element in the first state and the display assembly in the first state is 45 degrees.

4. 4. The aerial imaging system of claim 3, wherein the drive assembly drives the display assembly to rotate by a first angle β and the drive assembly drives the reflective element to rotate by a second angle α, satisfying the following relationships: 0°<α<45°, 0°<β<90°, and β=2α.

5. 4. The aerial imaging system of claim 3, wherein when the drive assembly drives the display assembly and the reflective element to rotate clockwise, respectively, a distance from the second virtual image to the aerial imaging assembly is greater than a distance from the first virtual image to the aerial imaging assembly.

6. 4. The aerial imaging system of claim 3, wherein when the drive assembly drives the display assembly and the reflective element to rotate counterclockwise, respectively, a distance from the second virtual image to the aerial imaging assembly is less than a distance from the first virtual image to the aerial imaging assembly.

7. The aerial imaging system of claim 1 , wherein the beam splitting structure is perpendicular to a virtual image of the display assembly.

8. The aerial imaging system of claim 1 , further comprising a fixed assembly, the drive assembly, the beam splitting structure and the retroreflective structure being each fixed to the fixed assembly.

9. The aerial imaging system of claim 1 , wherein the reflective element is a planar reflector.

10. 3. The aerial imaging system of claim 2, wherein an included angle between the reflective element and a virtual image of the display assembly in the first state is an obtuse angle.

11. 3. The aerial imaging system of claim 2, wherein an included angle between said reflective element and a virtual image of said display assembly in a first state is an acute angle.

12. 2. The aerial imaging system of claim 1, wherein the reflective element includes a connecting end and a first free end, the connecting end connected to the drive assembly, and the drive assembly drives the reflective element to rotate about the connecting end.

13. the drive assembly includes a rotating shaft, the display assembly is fixed to the rotating shaft, the display assembly includes a second free end, a third free end, and an intermediate portion connected to the second free end and the third free end, the rotating shaft is fixedly connected to the intermediate portion; The aerial imaging system of claim 12 , wherein the drive assembly drives and rotates the axis of rotation such that the display assembly rotates about the axis of rotation.

14. 3. The aerial imaging system of claim 2, wherein the first virtual image forms a first aerial image on the other side of the aerial imaging assembly through the aerial imaging assembly, and the second virtual image forms a second aerial image on the other side of the aerial imaging assembly through the aerial imaging assembly, and the first aerial image and the second aerial image are parallel and spaced apart along a second direction parallel to the first direction.

Images