Aerial imaging device

Abstract

An aerial imaging device (100), comprising: a plurality of display modules (30) used for respectively emitting image light (L) in at least two directions; and a flat lens (10) arranged on the same side of the plurality of display modules (30) and used for receiving the image light (L) emitted by the display modules (30) and respectively projecting and converging the plurality of beams of image light (L) to form a plurality of aerial real images (A), wherein each real image (A) and the corresponding display module (30) are symmetrical about the flat lens (10); and the flat lens (10) comprises an equivalent negative refractive index lens.

Description

Aerial imaging device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese patent application filed with the China Patent Office on January 31, 2024, with application number 202410142058.3 and application name “Aerial Imaging Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to aerial imaging devices. Background Art

[0004] Aerial imaging devices typically consist of a single display module corresponding to a single imaging element. The imaging element projects the light emitted by the display module into the air to form a real image. However, a single aerial image has a limited viewing angle, making it difficult to view from different directions. Installing multiple aerial imaging devices, each projecting real images in different directions, would exponentially increase the space required. Summary of the Invention

[0005] On one hand, the present application provides an aerial imaging device, comprising:

[0006] A plurality of display modules, configured to emit image light in at least two directions;

[0007] a flat lens disposed on the same side of the plurality of display modules, configured to receive the image light emitted by each of the display modules, and project and converge the plurality of image lights to form a plurality of real images in the air, wherein each of the real images is symmetrical with the corresponding display module about the flat lens;

[0008] Wherein, the flat plate lens includes an equivalent negative refractive index lens.

[0009] The aerial imaging device provided in an embodiment of the present application, by providing a flat-panel lens corresponding to multiple display modules, can converge the image light emitted by each display module to form a real image in the air. By configuring multiple display modules to emit image light in at least two directions, multiple real images oriented in at least two directions can be formed, thereby achieving multi-perspective aerial imaging through a single flat-panel lens. By configuring the flat-panel lens to include an equivalent negative refractive index lens, image light emitted from the display modules can be directly converged on the other side of the flat-panel lens to form a real image, eliminating the need for additional optical elements and facilitating improved space utilization of the aerial imaging device.

[0010] In one embodiment, the flat lens includes a first optical waveguide array and a second optical waveguide array, the first optical waveguide array includes a plurality of optical waveguides arranged parallel to a first direction, the second optical waveguide array includes a plurality of optical waveguides arranged parallel to a second direction, and the first direction is perpendicular to the second direction.

[0011] In one embodiment, the flat lens further includes a first transparent window and a second transparent window, wherein the first transparent window is arranged on a side of the first optical waveguide array away from the second optical waveguide array; and the second transparent window is arranged on a side of the second optical waveguide array away from the first optical waveguide array.

[0012] In one embodiment, the surface of the flat lens is provided with one or more combinations of anti-reflection components, anti-reflection components, and viewing angle control components.

[0013] In one embodiment, the included angle between each of the image lights and the flat lens is 40°-50°.

[0014] In one embodiment, the number of the display modules is two, and the two display modules emit the image light in different directions respectively.

[0015] In one embodiment, the number of the display modules is four, the flat lens is a quadrilateral structure, and the four display modules are respectively arranged corresponding to the four sides of the flat lens.

[0016] In one embodiment, the aerial imaging device further includes an interactive module, which is electrically connected to the plurality of display modules and is configured to sense user interaction and adjust display content of the plurality of display modules according to the interaction.

[0017] In one embodiment, the interaction module includes a sensing module and a controller, the sensing module is electrically connected to the controller, the sensing module is used to sense the interaction behavior and generate an interaction signal, and the controller is electrically connected to the multiple display modules for receiving and analyzing the interaction signal and adjusting the display content of the multiple display modules.

[0018] In one embodiment, the sensing module includes at least one motion sensing component, the sensing range of the motion sensing component covers one or more real images, and is used to sense the interactive behavior acting on the real image. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] FIG1 is a schematic structural diagram of an aerial imaging device in one embodiment of the present application.

[0021] FIG2 is a schematic structural diagram of a flat lens in an embodiment of the present application.

[0022] FIG3 is a schematic diagram of the exploded structure of the flat lens in FIG2 .

[0023] FIG4 is a schematic diagram of the front view structure of a flat lens in one embodiment of the present application.

[0024] FIG5 is a schematic diagram of a partial structure of an optical waveguide array in one embodiment of the present application.

[0025] FIG6 is a schematic diagram of the optical path structure of a flat lens in one embodiment of the present application.

[0026] FIG. 7 is a schematic diagram of a planar optical path of an optical waveguide array in an embodiment of the present application.

[0027] FIG8 is a schematic diagram of a three-dimensional optical path of an optical waveguide array in an embodiment of the present application.

[0028] FIG9 is a schematic diagram of a partial optical path structure of a flat lens in one embodiment of the present application.

[0029] FIG10 is a schematic diagram showing the electrical connection relationship of an aerial imaging device in one embodiment of the present application.

[0030] FIG11 is a schematic diagram of the interactive state of the aerial imaging device in one embodiment of the present application.

[0031] Description of the main component symbols: Aerial imaging device 100 Flat lens 10 First transparent window 11 First optical waveguide array 13 Second optical waveguide array 15 Second transparent window 17 Optical waveguide 130 Reflection unit 131 Reflection film 133 Adhesive 140 Display module 30 Interactive module 50 Sensing module 51 Motion sensing component 511 Sound sensing component 513 Controller 53 Real image A Image light L Image source E Aerial real image E' Angle α, θ Incident angles α1, α2, α3, γ1, γ2, γ3 Reflection angles β1, β2, β3, δ1, δ2, δ3 Distance D First direction X Second directionY The third direction Z

[0032] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0035] In order to further illustrate the technical means and effects adopted by this application to achieve the intended purpose, the following detailed description of this application is made in conjunction with the accompanying drawings and preferred implementation methods.

[0036] Referring to FIG. 1 , an aerial imaging device 100 provided in an embodiment of the present application includes a flat lens 10 and multiple display modules 30. The multiple display modules 30 are configured to emit image light L in at least two directions. The flat lens 10 is disposed on the same side of the multiple display modules 30 and is configured to receive the image light L emitted by each display module 30. The flat lens 10 projects and converges the multiple beams of image light L to form multiple real images A in the air. Each real image A is symmetrical with respect to the corresponding display module 30 about the flat lens 10.

[0037] Specifically, the flat lens 10 is an equivalent negative refractive index lens, meaning that light incident on the flat lens 10 is emitted in a direction symmetrical to the flat lens 10. Therefore, image light L emitted from any light-emitting point on a display module 30 diverges and is incident on the flat lens 10. After exiting from the other side of the flat lens 10, it converges to form a real image point. This real image point is symmetrical with the light-emitting point about the flat lens 10. Each light-emitting point on the display module 30 converges to form a real image point on the other side of the flat lens 10, thereby forming a real image A in space that is symmetrical with the display module 30 about the flat lens 10.

[0038] 2 and 3 , in this embodiment, the flat lens 10 includes a first transparent window 11, a first optical waveguide array 13, a second optical waveguide array 15, and a second transparent window 17, which are stacked in sequence. The first transparent window 11 and the second transparent window 17 are made of transparent materials and are used to protect the first optical waveguide array 13 and the second optical waveguide array 15, respectively.

[0039] Specifically, the first optical waveguide array 13 includes a plurality of optical waveguides 130 arranged in sequence parallel to a first direction X, and the second optical waveguide array 15 includes a plurality of optical waveguides 130 arranged in sequence parallel to a second direction Y. The first direction X is perpendicular to the second direction Y; that is, the arrangement direction of the plurality of optical waveguides 130 in the first optical waveguide array 13 and the arrangement direction of the plurality of optical waveguides 130 in the second optical waveguide array 15 are mutually perpendicular. The first transparent window 11, the first optical waveguide array 13, the second optical waveguide array 15, and the second transparent window 17 are arranged in sequence along a third direction Z. The first and second optical waveguide arrays 13, 15 have the same thickness along the third direction Z, facilitating design and production.

[0040] The first transparent window 11 and the second transparent window 17 each have two optical surfaces, and the first transparent window 11 and the second transparent window 17 each have a transmittance of 90%-100% for light with a wavelength between 390nm and 760nm. The material of the first transparent window 11 and the second transparent window 17 can be glass or at least one of polymers such as plastic, acrylic resin, etc., and is used to protect the first optical waveguide array 13 or the second optical waveguide array 15 and filter out excess light. In other embodiments, if the strength of the first optical waveguide array 13 and the second optical waveguide array 15 after being tightly orthogonally bonded is sufficient, or if the installation environment has thickness restrictions, then only one transparent substrate may be configured or no transparent substrate may be configured at all, and this application does not impose any restrictions on this.

[0041] Referring to Figures 3 and 4 , the first and second waveguide arrays 13 and 15 are composed of multiple waveguides 130 with rectangular cross-sections. The length of each waveguide 130 is determined by the outer dimensions of the first and second waveguide arrays 13 and 15. Therefore, the waveguides 130 in the first and second waveguide arrays 13 and 15 vary in length. The waveguides 130 in the first waveguide array 13 extend along a first direction X, while the waveguides 130 in the second waveguide array 15 extend along a second direction Y. The waveguides 130 in the first and second waveguide arrays 13 and 15 extend perpendicularly to each other. That is, when viewed from a third direction Z (the thickness direction of the flat lens 10), the first and second waveguide arrays 13 and 15 are arranged orthogonally. This allows the two orthogonal light beams to converge at a single point, ensuring symmetry between the object and image planes (the light source side and the imaging side) relative to the flat lens 10. This results in equivalent negative refraction and enables aerial imaging.

[0042] The first optical waveguide array 13 or the second optical waveguide array 15 is composed of a plurality of parallel optical waveguides 130 arranged obliquely 30°-60° from the vertical direction in the user's perspective. Specifically, the first optical waveguide array 13 may be composed of a plurality of optical waveguides 130 arranged side by side at an angle θ of 30°-60° and having a rectangular cross-section, where the angle θ is the angle between the optical waveguides 130 and the vertical direction in the user's perspective. The second optical waveguide array 15 may be composed of optical waveguides 130 arranged side by side perpendicular to the optical waveguides 130 in the first optical waveguide array 13 and having a rectangular cross-section. In other embodiments, the arrangement directions of the optical waveguides 130 in the two optical waveguide arrays may be interchanged. For example, the optical waveguides 130 in the first optical waveguide array 13 extend along the second direction Y, while the optical waveguides 130 in the second optical waveguide array 15 extend along the first direction X. This is not a limitation of the present application. As long as the first and second optical waveguide arrays 13, 15, are arranged orthogonally from a third direction Z (thickness direction), so that the two orthogonal light beams converge at a point, and the object-image plane (light source side and imaging side) is symmetrical relative to the flat lens 10, generating an equivalent negative refraction phenomenon and achieving aerial imaging, this is within the scope of the present application. The optical waveguide 130 has an optical refractive index n1. In some embodiments, n1 is greater than 1.4, for example, n1 is 1.5, 1.8, 2.0, etc.

[0043] Referring to Figure 5 , for the first optical waveguide array 13 and the second optical waveguide array 15, each optical waveguide 130 has two intersecting surfaces with its adjacent optical waveguide 130, each intersecting surface being bonded by a highly translucent adhesive 140. Adhesive 140 can be a photosensitive adhesive or a thermosetting adhesive. The thickness of adhesive 503 is greater than 0.001 mm, for example, 0.002 mm, 0.003 mm, or 0.0015 mm. The specific thickness can be set according to specific needs. Adhesive 140 (not shown) can be provided between the first transparent window 11, the first optical waveguide array 13, the second optical waveguide array 15, and the second transparent window 17 of the flat lens 10 to enhance security.

[0044] The optical waveguide 130 includes a reflective unit 131 and a reflective film 133 disposed on one side or both sides of the reflective unit 131 along the arrangement direction of the multiple optical waveguides 130. Specifically, in this embodiment, the reflective film 133 is coated on both sides of each reflective unit 131 in the arrangement direction of the multiple optical waveguides 130. The material of the reflective film 133 can be a metal material such as aluminum, silver, or other non-metallic compound material that achieves total reflection. The function of the reflective film 133 is to prevent light from entering the adjacent optical waveguide array due to lack of total reflection, thereby forming stray light that affects imaging. In other embodiments, the reflective film 133 can also be coated on only one side of the optical waveguide 130. Each reflective unit 131 can also add a dielectric film on the reflective film 133 to improve light reflectivity.

[0045] The cross-sectional width of a single reflective unit 131 is 0.1mm-5mm, and the cross-sectional length is 0.1mm-5mm. In order to obtain a better imaging effect, the cross-sectional width can also be 0.1mm-2mm, and the cross-sectional length can also be 0.1mm-2mm. For example, the cross-sectional width is 0.2mm and the cross-sectional length is 0.2mm, or the cross-sectional width is 0.5mm and the cross-sectional length is 0.5mm. When displaying on a large screen, large-size requirements can be achieved by splicing multiple optical waveguide arrays. The overall shape of the first optical waveguide array 13 and the second optical waveguide array 15 is set according to the needs of the application scenario. In this embodiment, the first optical waveguide array 13 and the second optical waveguide array 15 are rectangular structures as a whole, the reflective units 131 at the two diagonals are triangular, and the reflective unit 131 in the middle is a trapezoidal structure. The lengths of the individual reflective units 131 are different. The reflective units 131 located at the diagonals of the rectangle are the longest, and the reflective units 131 at the two ends are the shortest.

[0046] The flat lens 10 may further include an anti-reflection component, an anti-reflection component, and an angle control component (not shown). The anti-reflection component can reduce the interference of reflected light on the real image A. The anti-reflection component can improve the overall transmittance of the flat lens 10 and improve the clarity and brightness of the real image A. The angle control component can be used to eliminate the afterimage of the real image A, reduce the observer's dizziness, and prevent the observer from peeking into the interior of the aerial imaging device 100 from other angles, thereby improving the overall aesthetics of the aerial imaging device 100. Among them, the anti-reflection component, the anti-reflection component, and the angle control component can be combined, or they can also be independently arranged between the first transparent window 11 and the first optical waveguide array 13, between the second transparent window 17 and the second optical waveguide array 15, between the first optical waveguide array 13 and the second optical waveguide array 15, on the side of the first transparent window 11 away from the first optical waveguide array 13, or on the side of the second transparent window 17 away from the second optical waveguide array 15.

[0047] The following explains the principle of aerial imaging achieved by the flat lens 10. Please refer to Figures 6, 7, and 8. At the micrometer scale, a mutually orthogonal double-layer waveguide array structure is used to perform orthogonal decomposition of any optical signal emitted by an image source E. The optical signal emitted by image source E is projected onto the first optical waveguide array 13 along a third direction Z and then diverges along a first direction X and a second direction Y. A rectangular coordinate system is established with the location of image source E as the origin, the first direction X as the x-axis, and the second direction Y as the y-axis. Within this rectangular coordinate system, the light emitted by image source E is decomposed into two mutually orthogonal beams that diverge along the x-axis and the y-axis, respectively. When light from image source E is incident on the first optical waveguide array 13, the light diverging along the y-axis is perpendicular to the multiple optical waveguides 130 in the first optical waveguide array 13. Therefore, it sequentially enters different optical waveguides 130. After entering the reflective film 133, it is totally reflected by the reflective film 133 and then exits the optical waveguide 130 at the same reflection angle as the incident angle. The light sequentially reflected by the multiple optical waveguides 130 in the first optical waveguide array 13 enters the second optical waveguide array 15 and passes directly through the second optical waveguide array 15, parallel to the multiple optical waveguides 130 extending along the y-axis in the second optical waveguide array 15, ultimately converging to form a partial aerial real image E'. Light diverging along the x-axis is parallel to the multiple waveguides 130 in the first waveguide array 13 and therefore passes directly through the first waveguide array 13 and enters the second waveguide array 15. It is then sequentially reflected by the multiple waveguides 130 in the second waveguide array 15 and then emitted, ultimately converging to form another portion of the aerial real image E'. That is, the light emitted from the image source E is decomposed into two beams diverging along the first direction X and the second direction Y, respectively, which are reflected by the first waveguide array 13 and the second waveguide array 15, ultimately converging to form the aerial real image E'. The aerial real image E' is symmetrical with the image source E about the flat lens 10. Therefore, light from any direction passing through the flat lens 10 can achieve mirror symmetry. Divergent light from any light source will converge to form an aerial real image at a symmetrical position upon passing through the flat lens 10. The imaging distance D of the aerial real image E' is the same as the distance from the flat lens 10 to the image source E, representing equidistant imaging. Furthermore, the aerial real image E' is located in the air, requiring no specific carrier, but rather presenting a real image directly in the air. Therefore, the image in the space seen by the user is formed by the convergence of light emitted by the image source E.

[0048] The above-described process occurs on the flat lens 10 when the light emitted by the image source E passes through the flat lens 10. Specifically, referring to FIG9 , the incident angles of the light emitted by the image source E on the three optical waveguides 130 in the first optical waveguide array 13 shown in FIG10 are α1, α2, and α3, respectively. The corresponding reflection angles of the light emitted by the image source E on the three optical waveguides 130 shown are β1, β2, and β3, where α1 = β1, α2 = β2, and α3 = β3. After reflection from the first optical waveguide array 13, the incident angles of the light emitted by the image source E on one of the optical waveguides 130 in the second optical waveguide array 15 shown in FIG10 are γ1, γ2, and γ3, respectively. The corresponding reflection angles on the optical waveguide 130 are δ1, δ2, and δ3, respectively, where γ1 = δ1, γ2 = δ2, and γ3 = δ3.

[0049] Furthermore, the incident angles of the image source E on the n optical waveguides 130 of the first optical waveguide array 13 are α1, α2, α3, ..., αn, respectively. The distance between the image source E and the flat lens 10 is D. Then, the distance between the imaging position of the aerial real image E' and the flat lens 10 is also D, and the viewing angle of the aerial real image E' is twice max(α).

[0050] It is understandable that if the size of the flat lens 10 is small, the image can only be seen at a certain distance from the imaging side of the flat lens 10; and if the size of the flat lens 10 is increased, a larger imaging distance can be achieved, thereby increasing the field of view.

[0051] The first and second optical waveguide arrays 13 and 15 have the same thickness, which simplifies the structural complexity of the first and second optical waveguide arrays 13 and 15, reduces the manufacturing difficulty of the first and second optical waveguide arrays 13 and 15, improves the production efficiency of the first and second optical waveguide arrays 13 and 15, and reduces the production cost of the first and second optical waveguide arrays 13 and 15. It should be noted that the thickness consistency here is a relative range, not an absolute consistency. That is, to improve production efficiency, a certain thickness difference between the optical waveguide arrays is acceptable without affecting the quality of aerial imaging.

[0052] In other embodiments, the flat lens 10 can also have other structures. For example, the flat lens 10 includes only one layer of optical waveguide array (not shown), which includes a plurality of reflective units arranged in an array along the first direction X and the second direction Y. The reflective units are cubic columnar structures, and each reflective unit has four cylindrical surfaces coated with a reflective film. In other words, this single-layer optical waveguide array combines the first optical waveguide array 13 and the second optical waveguide array 15 into a single layer. The imaging principle is the same as that of a stacked structure of the first optical waveguide array 13 and the second optical waveguide array 15. This application is not limited to this.

[0053] Referring to Figure 10 , in this embodiment, the angle α between each display module 30 and the flat-panel lens 10 is 40°-50°. Specifically, the angle α can be any angle within the range of 40°-50°, for example, 45°. The angles α between multiple display modules 30 and the flat-panel lens 10 can be the same or different, and this application does not impose any limitation thereto.

[0054] Referring again to FIG. 1 , in this embodiment, the aerial imaging device 100 includes four display modules 30 . The flat lens 10 has a quadrilateral structure, and the four display modules 30 are disposed corresponding to the four sides of the flat lens 10 . Specifically, the four display modules 30 are parallel to the four sides of the flat lens 10 and face the center of the flat lens 10 , so that the four real images A face the four sides of the flat lens 10 . This allows users located around the flat lens 10 to see the real image A projected by the aerial imaging device 100 . Because the flat lens 10 symmetrically transmits light incident from one side to the other, light incident from different directions does not interfere with each other. Therefore, by providing a single flat lens 10 , the image light L emitted by the four display modules 30 can be converged into real images A. In other embodiments, the position of the real image A can be adjusted by adjusting the position of each display module 30 .

[0055] In another embodiment, the aerial imaging device 100 may include only two display modules 30, each of which emits image light L in different directions. That is, the two display modules 30 are respectively disposed at different positions corresponding to the flat-panel lens 10, thereby projecting real images A in different directions on the other side of the flat-panel lens 10. In other embodiments, the number of display modules 30 may also be set according to specific needs, for example, including three display modules 30 or five or more display modules 30. This application does not impose any restrictions on this. As long as multiple real images A facing different directions can be projected through a single flat-panel lens 10, they are within the scope of this application.

[0056] The display module 30 may be a flat display device or a three-dimensional display device. Specifically, the display module 30 may be a two-dimensional display panel, such as a display panel using cathode ray tube (CRT) display technology, liquid crystal display (LCD) technology, light emitting diode (LED) display technology, organic light emitting diode (OLED) display technology, quantum dot light emitting diode (QLED) display technology, plasma display panel (PDP) technology, micro light emitting diode (Micro LED) display technology, mini light emitting diode (Mini LED) display technology, digital light processing (DLP) display technology, etc. It may also be a true three-dimensional display panel using holographic three-dimensional imaging technology, static volume imaging technology, translational volume scanning technology, rotational volume scanning technology, etc., or a pseudo three-dimensional display panel using the principle of binocular parallax of the human eye. This application does not impose any restrictions on this.

[0057] The light-emitting surface of the display module 30 may also be coated with an anti-reflection film or a moth-eye film. Specifically, the anti-reflection film is used to increase the transmittance of light, while the moth-eye film can improve the resolution and anti-interference ability of the display module 30 .

[0058] Continuing with FIG. 10 , the aerial imaging device 100 further includes an interactive module 50 , which is electrically connected to the multiple display modules 30 and configured to sense user interactions and adjust the display content of the multiple display modules 30 based on the user interactions. Specifically, the interactive module 50 includes a sensing module 51 and a controller 53 . The sensing module 51 is electrically connected to the controller 53 . The sensing module 51 is configured to sense user interactions and generate interaction signals. The controller 53 is electrically connected to the multiple display modules 30 and configured to receive and analyze the interaction signals, thereby adjusting the display content of the multiple display modules 30 .

[0059] In this embodiment, the sensing module 51 is used to sense interactive behaviors acting on each real image A and transmit the interactive signals to the controller 53. The controller 53 is used to adjust the content displayed by each display module 30 simultaneously or separately based on the interactive signals, thereby completing the interaction process with the user. In other embodiments, depending on specific usage needs, the sensing module 51 can also be configured to sense interactive behaviors acting on only one or several real images A and adjust the display content of multiple display modules 30 accordingly. This application does not limit the specific control methods of the sensing module 51 and the controller 53.

[0060] In this embodiment, the sensing module 51 includes a motion sensing component 511 and a sound sensing component 513. The sensing range of the motion sensing component 511 covers the real image A and is used to sense interactive behaviors acting on the real image A. The sound sensing component 513 is used to receive sound signals emitted by the user, thereby generating interactive signals. Specifically, the motion sensing component 511 is used to sense the user's gestures or the position of the touch on the real image A, thereby determining the user's interactive behavior. The motion sensing component 511 can be a combination of one or more of a far-infrared sensing device, an ultrasonic sensing device, a laser interference sensing device, a grating sensing device, an optical fiber sensing device, or a charge-coupled device sensing device, and the like. This application does not impose any restrictions on this. In other embodiments, according to specific usage requirements, the sensing module 51 may also include other components, such as physical control buttons, etc.

[0061] Referring to FIG. 11 , in this embodiment, there are four motion sensing components 511, each corresponding to a real image A, such that each real image A is within the range of at least one motion sensing component 511. In other embodiments, depending on the specific use case, only one motion sensing component 511 may be provided, with the single motion sensing component 511 completely covering all real images A, or two motion sensing components 511 may be provided, with each motion sensing component 511 covering two real images A, and so on. This application does not impose any restriction on the specific number of motion sensing components 511; as long as the interactive behavior acting on the real image A can be sensed, it falls within the scope of this application.

[0062] In this embodiment, the aerial imaging device 100 may further include a power module (not shown), which is used to supply power to the display module 30 and the sensing module 50 .

[0063] The aerial imaging device 100 provided in the embodiment of the present application, by providing a single flat-panel lens 10 corresponding to multiple display modules 30, allows each of the multiple display modules 30 to project real images A in different directions through the flat-panel lens 10, thereby expanding the visual range of the aerial imaging device 100 while improving space utilization. By configuring the flat-panel lens 10 to include an equivalent negative refractive index lens, image light L emitted by the display modules 30 can be directly converged to form an image without the need for additional optical components, facilitating the installation of multiple display modules 30 and further improving space utilization.

[0064] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of protection claimed in the present application.

Claims

1. An aerial imaging device, characterized in that: include: A plurality of display modules, configured to emit image light in at least two directions; a flat lens disposed on the same side of the plurality of display modules, configured to receive the image light emitted by each of the display modules, and project and converge the plurality of image lights to form a plurality of real images in the air, wherein each of the real images is symmetrical with the corresponding display module about the flat lens; Wherein, the flat plate lens includes an equivalent negative refractive index lens.

2. The aerial imaging device according to claim 1, wherein The flat lens includes a first optical waveguide array and a second optical waveguide array. The first optical waveguide array includes a plurality of optical waveguides arranged parallel to a first direction. The second optical waveguide array includes a plurality of optical waveguides arranged parallel to a second direction. The first direction is perpendicular to the second direction.

3. The aerial imaging device according to claim 2, wherein: The flat lens further includes a first transparent window and a second transparent window. The first transparent window is arranged on a side of the first optical waveguide array away from the second optical waveguide array; the second transparent window is arranged on a side of the second optical waveguide array away from the first optical waveguide array.

4. The aerial imaging device according to claim 1, wherein: The flat lens further includes one or more combinations of an anti-reflection component, an anti-reflection component, and a viewing angle control component.

5. The aerial imaging device according to claim 1, wherein The included angle between each display module and the flat lens is 40°-50°.

6. The aerial imaging device according to claim 1, wherein: There are two display modules, and the two display modules emit the image light in different directions respectively.

7. The aerial imaging device according to claim 1, wherein: The number of the display modules is four, the flat-panel lens is a quadrilateral structure, and the four display modules are respectively arranged corresponding to the four sides of the flat-panel lens.

8. The aerial imaging device according to claim 1, wherein: The aerial imaging device further includes an interaction module, which is electrically connected to the plurality of display modules and is configured to sense user interaction behaviors and adjust display contents of the plurality of display modules according to the interaction behaviors.

9. The aerial imaging device according to claim 8, wherein: The interactive module includes a sensing module and a controller. The sensing module is electrically connected to the controller. The sensing module is used to sense the interactive behavior and generate an interactive signal. The controller is electrically connected to the multiple display modules to receive and analyze the interactive signal and adjust the display content of the multiple display modules.

10. The aerial imaging device according to claim 9, wherein: The sensing module includes at least one motion sensing component, the sensing range of which covers one or more real images, and is used to sense the interactive behavior acting on the real image.

Images