CN221326862U - Aerial imaging device suitable for 60 inch and above image interaction - Google Patents

Abstract

The present disclosure provides an aerial imaging device suitable for 60 inch and above image interaction, the device comprising a plurality of optical waveguides arranged along a plurality of concentric circular arcs with different radii in a plane; the light source is arranged on one side of the plane; the optical waveguides are used for receiving incident light from the light source when the light source is started, generating emergent light, and forming an image plane by the emergent light; the image plane is formed on the other side of the plane, and a preset observing position of the aerial imaging device is arranged on one side of the image plane, which is away from the plane; the optical waveguide is provided with at least a first total reflection surface and a second total reflection surface which are intersected, and the inner side surfaces of the first total reflection surface and the second total reflection surface face to a preset observation position. The scheme can enable an observer to see the opposite pictures clearly, and the observer can see the pictures on two sides clearly without translating left and right.

Description

Aerial imaging device suitable for 60 inch and above image interaction

Technical Field

The present disclosure relates to the field of aerial stereoscopic imaging, and in particular, to an aerial imaging device suitable for 60 inch and above image interaction.

Background

The three-dimensional imaging technology in the air mainly adopts a plurality of reflecting surfaces to reflect light rays for a plurality of times according to a reflection law, so that the light rays are finally converged into a real image visible to naked eyes in the air.

In the aerial stereoscopic imaging device in the prior art, light rays at the edges of an image plane cannot smoothly enter the field of view of an observer, as shown in fig. 1 and 2, when the observer stands at the position facing the device currently, only an image formed by emergent light at the S point can be observed, and the image at the A point at the edges of two sides is blurred or even has a phenomenon of picture missing. Therefore, if the observer wants to observe aerial imaging on both the left and right sides, a translation is required to the left and right. For a centrally located observer, the observed picture is left and right missing; in the process of moving leftwards, the left picture gradually emerges, and the right picture gradually lacks; and vice versa. Such viewers can only see the problem of facing the picture, and the solutions in the prior art are relatively lacking.

Disclosure of utility model

To solve or ameliorate the problems in the prior art, embodiments of the present disclosure provide an aerial imaging device suitable for 60 inch and above image interaction, the device comprising:

The optical waveguides are arranged along a plurality of concentric circular arcs with different radiuses in a plane;

the light source is arranged on one side of the plane;

The optical waveguides are used for receiving incident light from the light source when the light source is started, generating emergent light, and forming an image plane by the emergent light; the image plane is formed on the other side of the plane, and a preset observing position of the aerial imaging device is arranged on one side of the image plane, which is away from the plane;

The optical waveguide is provided with at least a first total reflection surface and a second total reflection surface which are intersected, and the inner side surfaces of the first total reflection surface and the second total reflection surface face to a preset observation position.

Optionally, the first total reflection surface and the second total reflection surface are perpendicular.

Optionally, the dimensions of the optical waveguide satisfy:

D∈[20,550]μm；

wherein H is the length of the common edge of the first total reflection surface 11 and the second total reflection surface 12; d is the length of the first total reflection surface 11 or the second total reflection surface 12 perpendicular to each other along the right-angled side formed.

Optionally, the optical waveguide is a quadrangular prism, and the bottom surface is rectangular, wherein connecting lines of two opposite prisms point to a preset observation position. Wherein, four inside walls of quadrangular prism all are provided with the total reflection face.

Optionally, the optical waveguide is tubular with rectangular cross section, at least two inner walls are total reflection surfaces, and the connecting lines of two edges point to preset observation positions.

Optionally, the end face of the optical waveguide is covered with an optically transparent medium.

Optionally, the plurality of optical waveguides, the light source are configured to: in the plane, the incident light is parallel to the outgoing light.

Optionally, the plurality of optical waveguides are disposed within a rectangular boundary on the plane.

Optionally, the light source comprises at least one display screen, the display screen being planar or curved.

Optionally, the center of the arc is disposed at the orthographic projection of the preset observation position on the plane.

Optionally, when the light source is started, the image plane formed by the plurality of light waveguides is a curved surface at least partially surrounding the preset observation position.

In the above scheme, the direction of the optical waveguide is adjusted, so that the light field intensity of the real image with a larger observation angle at the preset observation position is the same, that is, the observer can clearly see the opposite pictures, and can see the pictures on the two sides without translating left and right.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a diagram illustrating a stereoscopic imaging apparatus according to the prior art;

FIG. 2 is a schematic view of an optical path for illustrating the difficulty in seeing an edge stereoscopic image in the prior art;

FIG. 3 is a top view of an aerial imaging device provided by an embodiment of the present disclosure;

Fig. 4 is a schematic view of an optical path of at least two total reflection surfaces inside the optical waveguide.

Fig. 5 is a schematic diagram of an alternative structure of an optical waveguide provided by the present application.

Reference numerals in the drawings denote:

1. an optical waveguide; 2. a light source; 3. an image plane; 4. presetting an observation position;

11. a first total reflection surface; 12. a second total reflection surface;

Optical waveguides for aerial imaging in the prior art; 2, a light source in the prior art; 3, forming an aerial imaging image plane in the prior art; 4' the location of the observer in the prior art.

Detailed Description

In order that the disclosure may be understood, a more complete description of the disclosure will be rendered by reference to the appended drawings. Preferred embodiments of the present disclosure are shown in the drawings. This disclosure may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented, such as rotated 90 degrees or in other directions, and the spatial relative relationship descriptors used herein interpreted accordingly.

Hereinafter, exemplary embodiments according to the present disclosure will be described with reference to the accompanying drawings.

Currently, the frame of the mainstream aerial imaging display does not exceed 60 inches. With the development of technology, the requirement of the air imaging technology for large frames (60 inches and more) is higher and higher, and meanwhile, the combination of the air imaging technology and the sensing technology to form touch interaction based on air real images also becomes a new development trend. In achieving aerial real image-based interactions as shown in fig. 1 and 2, a user is required to approach the aerial real image projected by the aerial imaging technique. The inventor of the present application unexpectedly found that when the frame of the real image in the space reaches or exceeds 60 inches, when the user observes or performs image-based interaction at the interactable distance, the field of view of the observer is limited due to the overlarge image frame and the too close distance between the user and the image, i.e. the problem that the field of view of the observer cannot cover all the frames occurs. At this time, when the user needs to observe or operate the left image, the left image can only move or deflect to the left to a position where the left image can be observed or operated, and at this time, the right image is blurred or even missing at the view angle of the user; and vice versa. This is because the angles of arrangement of the light guides in the same plane are uniform, or parallel, the closer to the edge the light guides are oriented away from the viewer.

To solve this problem, the inventors found that by adjusting the arrangement of the optical waveguides and the orientations of the reflection surfaces, the angular bisector direction between the two reflection surfaces in the optical waveguides thereof can be oriented toward the observer, so that the imaging light beam is converged within a range that the user's field of view can cover, that is, the observer can stand at a fixed point to observe or manipulate the entire image when observing the image within the interactable distance. According to an embodiment of the present application, the interactable distance is the range within which an element in an image can respond to user movements. For example, the interactable distance is related to a maximum arm span of the user. For another example, the interactable distance is related to an identification range of the sensing system. It is not easy for a person skilled in the art to set a suitable interactive distance according to the format of the real image projected by the aerial imaging device and the conditions of the height of the user. For example, the aerial imaging device has a frame of 60 inches and the interactive distance is less than 2m. Fig. 3 schematically illustrates the principle of imaging a conventional optical waveguide array near an edge position and the principle of imaging an optical waveguide array near an edge position as shown in the present application. The a 'position in fig. 3 provides optical waveguides in a conventional manner (e.g., as shown in fig. 2), and the S' position in fig. 3 provides optical waveguides in a manner consistent with the present application. As shown in fig. 3, the light waveguide incident to the point a' after the light beam is emitted by the light emitting point a is reflected once, and belongs to a virtual image in the mirror; and the luminous point S emits light beams and then enters the S' point to be reflected twice, so that real images can be formed, and the imaging is clearer.

Based on this, the inventors propose an aerial imaging device. The device can be used for converging emergent light rays in a preset view angle range by changing the position coordinates and the arrangement angles of the optical waveguides, and when a user uses the device in a short distance, all pictures can be observed or operated without moving left and right.

The device includes a plurality of optical waveguides arranged along a plurality of circular arcs of concentric and varying radius in a plane. In some embodiments, the density and size of the optical waveguides can be adjusted as desired to accommodate different imaging resolution requirements.

In addition, the device can also enable emergent light rays to be converged in a preset view angle range by changing the arrangement angle and the position coordinates of the optical waveguides. The method has the advantages that the range of the angle of view can be adjusted according to the requirement, and the method can be realized by changing the arrangement angle and the position coordinates of the optical waveguide. However, this approach has the disadvantage that complex hardware equipment and control systems may be required and that extensive calculations and optimizations may be required to determine the optimal arrangement angle and position coordinates.

In view of this, the present disclosure is directed to an aerial imaging device in which all optical waveguides face an observer in order to ensure the viewing experience of the observer.

As shown in fig. 4, an aerial imaging apparatus provided by an embodiment includes:

The optical waveguides 1 are arranged along a plurality of circular arcs having different radii and being concentric in a plane. In some embodiments, the density and size of the optical waveguide 1 can be adjusted as needed to accommodate different imaging resolution and resolution requirements.

The above arrangement of the optical waveguides 1 aims to make each optical waveguide 1 face a preset observation position 4, that is, face an observer located at the position, and the observer at the position can watch the whole image without moving left and right, and only by turning the line of sight left and right. Preferably, the preset observation position 4 is located right above the center of the circular arc.

As shown in fig. 5, the optical waveguide 1 has at least a first total reflection surface 11 and a second total reflection surface 12, and inner side surfaces of the first total reflection surface 11 and the second total reflection surface 12 are each directed toward the preset observation position 4.

A light source 2 disposed on one side of the plane; as shown in fig. 4, when the light source 2 is activated, the plurality of light guides 1 are capable of receiving incident light from the light source 2, generating outgoing light, and forming an image plane 3 toward a preset observation position 4 by the outgoing light. The image plane 3 is formed on the other side of the plane, and the preset observing position 4 of the aerial imaging device is arranged on one side of the image plane 3 away from the plane. Preferably, the image plane 3 is formed as a curved image plane, so that the observer can obtain the best viewing effect regardless of the central area or the edge area of the image plane 3.

In some embodiments, the incident light provided by the light source is totally reflected at least twice by the first total reflection surface 11 and the second total reflection surface 12, and exits from the other side of the plane in which the optical waveguide is located. The emergent light rays are converged in the air to form a real image, so that light field reconstruction is realized, and an image plane 3 formed by the light field reconstruction is curved and faces an observer.

The preset viewing position 4 is typically the position of the eyes of the desired observer when using the device, or the preset viewing position 4 may be the viewing angle range area formed by the glasses of the desired observer when using the device.

In the embodiment of the present application, the plurality of optical waveguides 1 may have various arrangements, as long as the inner sides of the first total reflection surface 11 and the second total reflection surface 12 intersecting each optical waveguide 1 are both facing the preset observation position 4. In a preferred embodiment, the angular bisector of the angle between the first fully reflecting surface 11 and the second fully reflecting surface 12 is oriented towards the preset viewing position 4.

In a preferred embodiment, the outgoing light of the plurality of optical waveguides 1 after being arranged and designed can fall within the field of view of human eyes. Wherein, the width X (cm) of the image surface that can be seen by the human eye and the distance L between the human eye and the image surface satisfy the relation:

X＝L×1.154-6；

The width X of the image plane visible to the human eye, that is, the field of view of the human eye at this time, can be calculated from the above-described relational expression. Therefore, after the width is calculated according to the above relation, the plurality of optical waveguides are arranged according to the width, so that all the optical waveguides can fall within the width range, and meanwhile, as the imaging plane 3 formed by the aerial imaging device is a curved surface, imaging ghost is reduced, so that an observer can watch all the clear imaging planes 3 at the same distance.

In the embodiment, the size of the plurality of optical waveguides 1 and the density of arrangement are also required. In the embodiment of the present application, the smaller the size of the plurality of optical waveguides 1 is and the greater the density at which the plurality of optical waveguides 1 are arranged, the higher the imaging definition thereof, on the premise that the plurality of optical waveguides 1 do not intersect each other.

In a preferred embodiment, the dimensions of the plurality of optical waveguides 1 satisfy:

D∈[20,550]μm；

wherein H is the length of the common edge of the first total reflection surface 11 and the second total reflection surface 12; d is the length of the first total reflection surface 11 or the second total reflection surface 12 perpendicular to each other along the right-angled side formed.

In a preferred embodiment, the light guides on each adjacent arc may be staggered to increase the number of light guides provided and increase the resolution of the displayed image.

In an exemplary embodiment, the plurality of optical waveguides 1 are arranged in the form of a sector, and the preset observation position 4 is located directly above the center of the sector.

In an embodiment, the fan angle, or arc maximum angle, at which the plurality of optical waveguides 1 are arranged is typically less than 180 °.

In an exemplary embodiment, the first and second total reflection surfaces 11 and 12 are perpendicular.

Embodiments of the present disclosure may employ a bulk optical waveguide, optionally in the form of:

In an alternative embodiment, the optical waveguide 1 is a quadrangular prism, and the bottom surface is rectangular, wherein the connecting lines of two opposite prisms point to the preset observation position 4. The material may be, for example, glass and the side walls are provided with a reflective layer.

In an alternative embodiment, the four inner side walls of the quadrangular prism are each provided with a total reflection surface.

In an alternative embodiment, the optical waveguide 1 is tubular with a rectangular cross section, at least two inner walls are total reflection surfaces, and the connecting line of two edges points to a preset observation position.

In an alternative embodiment, the end face of the optical waveguide 1 is covered with an optically transparent medium.

In an embodiment, the plurality of optical waveguides 1, light sources 2 are configured to: in the plane, the incident light is parallel to the outgoing light.

In the embodiment, the plurality of optical waveguides 1 are disposed within one rectangular boundary on a plane. The rectangular optical waveguide array is formed as a whole.

In an embodiment, the light source 2 comprises at least one display screen, which is planar or curved. The light source 2 may be a plurality of tiled flat/curved display screens.

In selected and preferred conditions, the angle between the flat display screen and the plane of the optical waveguide should be between 30 ° and 60 °. This means that the angle between the display screen and the light guide should be in this range to ensure an optimal optical transmission effect. For the preferred conditions we prefer this angle to be close to 45 °. This is because an angle of 45 ° is generally considered optimal because it can minimize the complexity and cost of the system while ensuring good optical transmission.

In a preferred embodiment, the present application selects a curved display screen that matches the arc of the light guide arrangement. This means that the curvature of the display screen and the arrangement of the light guides are closely related, which ensures the correct transmission and display of light.

In an exemplary embodiment, the optical waveguides 1 are arranged in circular arcs or sectors, the centers of which are arranged in the orthographic projection of a plane of the predetermined observation position. This arrangement ensures that the light guide functions correctly throughout the viewing area, thereby providing a continuous and consistent visual experience.

When the light source 2 is activated, the image plane 3 formed by the plurality of light guides 1 at least partially surrounds the predetermined viewing position 4. This means that the observer sees a clear image regardless of their line of sight.

In order to achieve the best display effect, the image surface 3 for generating the real image is a circular arc surface which takes the preset observation position 4 as the center of a circle and can encircle an observer. This arrangement ensures that the observer sees a clear image regardless of their line of sight, thereby providing a more realistic and stereoscopic viewing experience.

In some alternative embodiments, the light source 2 comprises a two-dimensional light source and a three-dimensional light source. This means that we can choose the most suitable type of light source according to specific needs and conditions.

In general, the above embodiments enable the light field intensity of the real image with a larger observation angle at the preset observation position to be the same by adjusting the direction of the light waveguide, that is, the observer can see the opposite picture clearly, and can see the picture on the two sides clearly without translating left and right. This arrangement ensures that the observer sees a clear image regardless of their line of sight, thereby providing a more realistic and stereoscopic viewing experience.

In general, by adjusting the direction of the light guide, selecting the appropriate light source, taking into account the angle of view and aperture control, the best display results can be achieved, providing a realistic and stereoscopic viewing experience.

While the embodiments of the present disclosure have been described in detail, the scope of the embodiments of the present disclosure is not limited thereto, and any changes or substitutions can be easily made by those skilled in the art within the scope of the embodiments of the present disclosure, which are intended to be covered by the embodiments of the present disclosure. Therefore, the protection scope of the embodiments of the present disclosure shall be subject to the protection scope of the claims.

Claims (11)

1. An aerial imaging device adapted for 60 inch and above image interaction, comprising:

A plurality of optical waveguides (1), wherein the optical waveguides (1) are arranged along a plurality of circular arcs which are concentric in a plane and have different radiuses;

a light source (2) provided on one side of the plane;

The optical waveguides are used, when the light source (2) is activated, the plurality of optical waveguides (1) being able to receive incident light from the light source (2), produce outgoing light, and form an imaging plane (3) by means of the outgoing light; the image plane (3) is formed on the other side of the plane, and a preset observing position (4) of the aerial imaging device is arranged on one side, deviating from the plane, of the image plane (3);

The optical waveguide (1) is provided with at least a first total reflection surface (11) and a second total reflection surface (12) which are intersected, and the inner side surfaces of the first total reflection surface (11) and the second total reflection surface (12) face the preset observation position (4).

2. Aerial imaging device according to claim 1, characterized in that the first (11) and second (12) total reflection surfaces are perpendicular.

3. Aerial imaging device according to claim 2, characterized in that the dimensions of the optical waveguide (1) are such that:

D∈[20,550]μm；

Wherein H is the length of the common edge of the first total reflection surface (11) and the second total reflection surface (12); d is the length of the first total reflection surface (11) or the second total reflection surface (12) perpendicular to each other along the right-angle side.

4. Aerial imaging device according to claim 1, characterized in that the optical waveguide (1) is a quadrangular prism with a rectangular bottom surface, wherein the connection lines of the opposite edges are directed towards the preset viewing position (4).

5. Aerial imaging device according to claim 1, characterized in that the optical waveguide (1) is a tubular object with a rectangular cross section, at least two inner walls being fully reflective, wherein the line of the two edges is directed towards the predetermined observation position (4).

6. Aerial imaging device according to claim 5, characterized in that the end face of the optical waveguide (1) is covered with an optically transparent medium.

7. Aerial imaging device according to any of claims 1 to 6, characterized in that the plurality of optical waveguides (1), the light source (2) are configured to: in the plane, the incident light is parallel to the outgoing light.

8. Aerial imaging device according to claim 1, characterized in that the plurality of optical waveguides (1) are arranged within a rectangular boundary on the plane.

9. Aerial imaging device according to claim 1, characterized in that the light source (2) comprises at least one display screen, which is planar or curved.

10. Aerial imaging device according to claim 1, characterized in that the centre of the circular arc is arranged at the orthographic projection of the preset observation position (4) on the plane.

11. Aerial imaging device according to claim 1, characterized in that the image plane formed by the plurality of optical waveguides (1) is a curved surface at least partly surrounding the preset viewing position (4) when the light source (2) is activated.