Repeated folding reflection type aerial imaging display system

Abstract

The invention discloses a multi-fold reflection type aerial imaging display system, which relates to the field of aerial imaging and comprises a display source, a plane mirror, a spectroscope and a curved surface mirror, light beams emitted by the display source are reflected to the spectroscope by the plane mirror, and part of the light beams are reflected to the curved mirror by the surface of the spectroscope; the light beams reaching the curved reflector are reflected to the spectroscope and penetrate through the spectroscope, and a suspension image is formed on the other side of the spectroscope. According to the invention, the compression of the volume of the system is realized by the off-axis placement of the plane mirror, the spectroscope and the curved mirror, so that the problems of huge volume and small suspension distance of a suspension image of the air imaging system are solved, the lightening and thinning of the system are realized, and the display effect of the system is enhanced.

Description

Technical Field

[0001] This invention relates to the field of aerial imaging, and more specifically to an aerial imaging display system with multiple folding and reflection. Background Technology

[0002] Aerial imaging technology generates images in mid-air by manipulating the path of light or directly exciting a medium, allowing viewers to see suspended images without the need for visual aids. This technology breaks free from the limitations of traditional display screens on content, offering unique and stunning visual effects. It has broad application prospects in entertainment, education, and healthcare, and is considered a next-generation display technology.

[0003] However, most current aerial imaging display devices based on beam splitters and curved mirrors are coaxial systems, requiring the beam splitter to be tilted at 45° to achieve a levitating display effect. This leads to the following two problems: 1. Because the beam splitter is placed at a 45° angle, the system will be relatively large, which makes it difficult to meet the application requirements of scenarios with high spatial layout requirements.

[0004] 2. The 45° angled placement of the beam splitter also reduces the distance between the floating image and the system, thus reducing the sense of the floating image going off-screen and weakening the display effect.

[0005] The above two points seriously hinder the commercialization and application of this technology. Summary of the Invention

[0006] To address the aforementioned shortcomings in the existing technology, the present invention provides a multi-folding reflective aerial imaging display system that solves the problems of the existing beam splitter being placed at a 45° angle, resulting in a large system size, reduced sense of floating images appearing off-screen, and weakened display effect.

[0007] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: A multi-folding reflective aerial imaging display system is provided, comprising a display source, a plane mirror, a beam splitter, and a curved mirror; wherein: The light beam emitted by the display source is reflected by the plane mirror to the beam splitter, and part of the light beam is reflected by the surface of the beam splitter to the curved mirror; the light beam that reaches the curved mirror is reflected back to the beam splitter and passes through the beam splitter, forming a floating image on the other side of the beam splitter; When the beam from the curved mirror exits the beam splitter horizontally, the display source is located below the beam splitter, the plane mirror is located below the curved mirror, the centers of the beam splitter and the curved mirror are aligned, and the angle between the beam splitter and the vertical direction is greater than 10° and less than 25°.

[0008] Furthermore, the distance between the suspended image and the aerial imaging display system is adjusted by modifying the equivalent focal length of the curved mirror, the path taken by the light beam emitted from the display source to the curved mirror, the angle between the display source and the vertical direction, the angle between the plane mirror and the vertical direction, and / or the angle between the beam splitter and the vertical direction; wherein the distance between the suspended image and the aerial imaging display system is subject to the following constraints:

[0009] in This is the minimum distance between the suspended image and the beam splitter, which is also the distance between the suspended image and the aerial imaging display system; The equivalent focal length of the curved mirror; To show the path that the light beam emitted from the source takes to the curved mirror, i.e., the object distance; It is a cosine function; To display the angle between the source and the vertical direction; The angle between the plane mirror and the vertical direction; The angle between the beam splitter and the vertical direction; For the thickness of the aerial imaging display system; .

[0010] Furthermore, when the beam from the curved mirror exits the beam splitter horizontally, the thickness of the aerial imaging display system... for:

[0011] in The thickness of the aerial imaging display system; This is the horizontal distance between the center of the beam splitter and the center of the curved mirror; The height of the beam splitter; The angle between the beam splitter and the vertical direction; It is a sine function.

[0012] Furthermore, the object distance is adjusted by modifying the path of the light beam from the display source to the plane mirror, the path of the light beam from the plane mirror to the beam splitter, and / or the distance of the light beam from the beam splitter to the curved mirror; wherein the object distance is:

[0013]

[0014]

[0015]

[0016] in To show the path that the light beam emitted from the source takes to the curved mirror, i.e., the object distance; This represents the path the light beam takes from the display source to the plane mirror. To display the horizontal distance between the center of the source and the center of the plane mirror; This represents the path the light beam takes from the plane mirror to the beam splitter. This is the vertical distance between the center of the plane mirror and the center of the beam splitter; This is the distance the beam travels from the beam splitter to the curved mirror.

[0017] Furthermore, the size of the suspended image is adjusted by modifying the equivalent focal length of the curved reflector, the object distance, the angle between the display source and the vertical direction, the angle between the plane reflector and the vertical direction, the angle between the beam splitter and the vertical direction, and / or the width of the display source; wherein the size of the suspended image is subject to the following constraints:

[0018] in The size of the floating image; The equivalent focal length of the curved mirror; To show the path that the light beam emitted from the source takes to the curved mirror, i.e., the object distance; It is a cosine function; To display the angle between the source and the vertical direction; The angle between the plane mirror and the vertical direction; The angle between the beam splitter and the vertical direction; To display the width of the source.

[0019] Furthermore, the viewing angle of the suspended image is adjusted by adjusting the width of the curved reflector, the size of the suspended image, and / or the distance between the suspended image and the aerial imaging display system; wherein the viewing angle of the suspended image has the following constraints:

[0020] in The viewing angle of the floating image; It is the tangent function; The width of the curved mirror; The size of the floating image; This is the minimum distance between the suspended image and the beam splitter, which is also the distance between the suspended image and the aerial imaging display system.

[0021] Furthermore, the width of the curved mirror is related to the focal length. It has the following constraints:

[0022] in The width of the curved mirror; The equivalent focal length of the curved mirror; Focal length of curved mirror Width of the display source Width of the floating image It has the following constraints:

[0023] in This is the minimum distance between the suspended image and the beam splitter, which is also the distance between the suspended image and the aerial imaging display system; The thickness of the aerial imaging display system.

[0024] Furthermore, when the beam from the curved mirror exits the beam splitter horizontally, the angle between the plane mirror and the vertical direction... The range of values ​​and the angle between the curved mirror and the vertical direction. The range of values ​​for are as follows:

[0025] .

[0026] Furthermore, the vertical distance between the center of the plane mirror and the center of the beam splitter... It has the following constraints:

[0027] in The height of the plane mirror; The angle between the plane mirror and the vertical direction; The height of the curved mirror; The angle between the curved mirror and the vertical direction; It is a cosine function; The height of the beam splitter is greater than or equal to the height of the curved mirror; Height of curved mirror It has the following constraints:

[0028] in The width of the curved mirror.

[0029] Furthermore, when the beam from the curved mirror exits the beam splitter horizontally, the altitude of the aerial imaging display system... for:

[0030] in To display the vertical distance between the center of the source and the center of the plane mirror; This is the vertical distance between the center of the plane mirror and the center of the beam splitter; To display the height of the source; The height of the beam splitter; To display the angle between the source and the vertical direction; The angle between the beam splitter and the vertical direction; It is a cosine function.

[0031] The beneficial effects of this invention are as follows: This invention utilizes the off-axis placement of a plane mirror, a beam splitter, and a curved mirror to compress the system volume, solving the problems of large size and small floating distance of such aerial imaging systems, achieving system thinning and enhancing the system's display effect. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the aerial imaging display system; Figure 2 This is a side view of the aerial imaging display system; Among them: 1. Display source; 2. Plane mirror; 3. Beam splitter; 4. Curved mirror. Detailed Implementation

[0033] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0034] Example 1: This embodiment is illustrated by taking the horizontal exit of the beam from the curved reflector 4 to the beam splitter 3 as an example. When it is necessary to adjust the angle of the beam from the curved reflector 4 to the beam splitter 3, the angle of the multi-fold reflection aerial imaging display system can be adjusted as a whole.

[0035] like Figure 1 and Figure 2 As shown, this multi-folding reflective aerial imaging display system includes a display source 1, a plane mirror 2, a beam splitter 3, and a curved mirror 4; wherein: The light beam emitted by the display source 1 is reflected by the plane mirror 2 to the beam splitter 3. Part of the light beam is reflected by the surface of the beam splitter 3 to the curved mirror 4, and another part of the light beam passes through the beam splitter 3 and will not be used again. The light beam that reaches the curved mirror 4 is reflected to the beam splitter 3 and passes through the beam splitter 3, forming a floating image on the other side of the beam splitter 3. Display source 1 is located below beam splitter 3, plane mirror 2 is located below curved mirror 4, beam splitter 3 and curved mirror 4 are aligned, and the angle between beam splitter 3 and the vertical direction is greater than 10° and less than 25°.

[0036] For aerial imaging systems, the imaging distance of the suspended image affects the display effect; the greater the imaging distance, the more impressive the display effect. In this aerial imaging display system, the distance between the suspended image and the aerial imaging display system is adjusted by modifying the equivalent focal length of the curved reflector 4, the path of the light beam emitted from the display source 1 to the curved reflector 4, the angle between the display source 1 and the vertical direction, the angle between the plane reflector 2 and the vertical direction, and / or the angle between the beam splitter 3 and the vertical direction. The distance between the suspended image and the aerial imaging display system is subject to the following constraints:

[0037] in This is the minimum distance between the suspended image and the beam splitter 3, which is also the distance between the suspended image and the aerial imaging display system; The equivalent focal length of the curved mirror 4; To show the path that the light beam emitted from source 1 travels to the curved mirror 4, i.e., the object distance; It is a cosine function; To display the angle between source 1 and the vertical direction; The angle between the plane mirror 2 and the vertical direction; The angle between beam splitter 3 and the vertical direction; The thickness of the aerial imaging display system.

[0038] Thickness of aerial imaging display system for:

[0039] in This is the horizontal distance between the center of beam splitter 3 and the center of curved mirror 4; The height of beam splitter 3; It is a sine function.

[0040] In this embodiment, the object distance is adjusted by adjusting the path of the light beam from the display source 1 to the plane mirror 2, the path of the light beam from the plane mirror 2 to the beam splitter 3, and / or the distance of the light beam from the beam splitter 3 to the curved mirror 4; wherein the object distance is:

[0041]

[0042]

[0043]

[0044] in To show the path that the light beam emitted from source 1 travels to the curved mirror 4, i.e., the object distance; This represents the path the light beam takes from display source 1 to plane mirror 2; To display the horizontal distance between the center of source 1 and the center of plane mirror 2; This represents the path the light beam takes from plane mirror 2 to beam splitter 3; The vertical distance between the center of plane mirror 2 and the center of beam splitter 3; This is the distance the beam travels from beam splitter 3 to curved mirror 4.

[0045] To ensure that the light emitted from display source 1 can converge in the air to generate a real image of display source 1, it is necessary to control the distance between various components in the aerial imaging display system to control the path length of light propagation (i.e., control the object distance). The object distance needs to satisfy the formula: .

[0046] In this embodiment, the size of the suspended image is adjusted by adjusting the equivalent focal length and object distance of the curved reflector 4, the angle between the display source 1 and the vertical direction, the angle between the plane reflector 2 and the vertical direction, the angle between the beam splitter 3 and the vertical direction, and / or the width of the display source 1; wherein the size of the suspended image has the following constraints:

[0047] in The size of the floating image; The equivalent focal length of the curved mirror 4; To show the path that the light beam emitted from source 1 travels to the curved mirror 4, i.e., the object distance; It is a cosine function; To display the angle between source 1 and the vertical direction; The angle between the plane mirror 2 and the vertical direction; The angle between beam splitter 3 and the vertical direction; To display the width of source 1.

[0048] In this embodiment, the viewing angle of the suspended image is adjusted by adjusting the width of the curved reflector 4, the size of the suspended image, and / or the distance between the suspended image and the aerial imaging display system; wherein the viewing angle of the suspended image has the following constraints:

[0049] in The viewing angle of the floating image; It is the tangent function; The width of the curved mirror 4; The size of the floating image; This is the minimum distance between the suspended image and the beam splitter 3, which is also the distance between the suspended image and the aerial imaging display system.

[0050] In this embodiment, to ensure the display quality of the levitation image, it is necessary to control the relative aperture of the curved reflector 4, the width of the curved reflector 4, and the focal length. It has the following constraints:

[0051] in The width of the curved mirror 4; The equivalent focal length of the curved mirror 4; Focal length of curved mirror 4 Width of display source 1 Width of the floating image It has the following constraints:

[0052] in This is the minimum distance between the suspended image and the beam splitter 3, which is also the distance between the suspended image and the aerial imaging display system.

[0053] In this embodiment, when the light beam from the curved mirror 4 exits the beam splitter 3 horizontally, the angle between the plane mirror 2 and the vertical direction is... The range of values ​​and the angle between the curved mirror 4 and the vertical direction. The range of values ​​for are as follows:

[0054] .

[0055] The vertical distance between the center of plane mirror 2 and the center of beam splitter 3 It has the following constraints:

[0056] in The height of plane mirror 2; The angle between the plane mirror 2 and the vertical direction; The height of the curved mirror 4; The angle between the curved mirror 4 and the vertical direction; It is a cosine function; The height of beam splitter 3 is greater than or equal to the height of curved mirror 4; Height of curved mirror 4 It has the following constraints:

[0057] in The width of the curved mirror 4 is given.

[0058] In this embodiment, when the light beam from the curved mirror 4 exits horizontally from the beam splitter 3, the height of the aerial imaging display system is... for:

[0059] in To display the vertical distance between the center of source 1 and the center of plane mirror 2; The vertical distance between the center of plane mirror 2 and the center of beam splitter 3; To display the height of source 1; The height of beam splitter 3; To display the angle between source 1 and the vertical direction; The angle between beam splitter 3 and the vertical direction; It is a cosine function.

[0060] Example 2: This embodiment is a further extension based on Embodiment 1. In this embodiment, the steps for determining the parameters of the aerial imaging display system are as follows: S1. Determine the floating distance of the displayed image according to requirements. Size of the levitation image Viewing angle of suspending images System thickness The target value; S2. Determine the dimensions of the curved mirror 4. ; S3. Determine the size of display source 1. and Determine the rotation angle of plane mirror 2 within the defined range. Determine the rotation angle of beam splitter 3 within the defined range. Determine the height of the curved mirror 4 within the defined area. Determine the height of beam splitter 3 within the defined area. In this embodiment, , , ; S4. Determine the horizontal distance between the center of beam splitter 3 and the center of curved mirror 4. ; S5. Determine the focal length of the curved mirror 4 within the defined area. In this embodiment ; S6. Determine the rotation angle of display source 1. ; S7. Determine the altitude of the aerial imaging display system according to requirements. This allows us to determine the horizontal distance between the center of display source 1 and the center of plane mirror 2. The vertical distance between the center of plane mirror 2 and the center of beam splitter 3 ; S8. Determine the rotation angle of the curved mirror 4 within the defined range. Determine the height of plane mirror 2 within the designated area. In this embodiment, the upper edge of the planar reflector 2 is in close contact with the lower edge of the curved reflector 4. Therefore, it can be determined The accurate value.

[0061] If no specific system parameters are given, you may choose accordingly.

[0062] The parameters that can be obtained in this embodiment include: The display source 1 has a width of 70mm, a height of 40mm, and an angle of 45° with the vertical direction. The horizontal distance from the center of the display source 1 to the center of the plane mirror 2 is 41mm, and the vertical distance is 42mm.

[0063] The plane mirror 2 has a width of 34mm and a height of 34mm, and is perpendicular to the ground. The vertical distance from the center of the plane mirror 2 to the center of the beam splitter 3 is 60mm.

[0064] The beam splitter 3 has a width of 120mm, a height of 80mm, a beam splitting ratio of 1, and an angle of 20° with the vertical direction. The horizontal distance from the center of the beam splitter 3 to the center of the curved mirror 4 is 48mm.

[0065] The curved reflector 4 has a width of 120mm, a height of 80mm, a radius of curvature of 150mm, a focal length of 75mm, a spherical surface, and an angle of 5° with the vertical direction.

[0066] The final width of the aerial imaging display system is approximately 61.5mm, and the height is approximately 160mm. It can generate a floating image with a width of 50mm and a height of 26mm at a horizontal distance of 80mm from the aerial imaging display system.

Claims

1. A multi-folding reflective aerial imaging display system, characterized in that, It includes a display source (1), a plane mirror (2), a beam splitter (3), and a curved mirror (4); wherein: The light beam emitted by the display source (1) is reflected by the plane mirror (2) to the beam splitter (3), and part of the light beam is reflected by the surface of the beam splitter (3) to the curved mirror (4); the light beam that reaches the curved mirror (4) is reflected to the beam splitter (3) and passes through the beam splitter (3), forming a floating image on the other side of the beam splitter (3); When the beam from the curved mirror (4) exits horizontally from the beam splitter (3), the display source (1) is located below the beam splitter (3), the plane mirror (2) is located below the curved mirror (4), the beam splitter (3) and the curved mirror (4) are aligned at the center, and the angle between the beam splitter (3) and the vertical direction is greater than 10° and less than 25°.

2. The multi-folding reflective aerial imaging display system according to claim 1, characterized in that, The distance between the suspended image and the aerial imaging display system is adjusted by adjusting the equivalent focal length of the curved reflector (4), the path taken by the light beam emitted from the display source (1) to the curved reflector (4), the angle between the display source (1) and the vertical direction, the angle between the plane reflector (2) and the vertical direction, and / or the angle between the beam splitter (3) and the vertical direction; wherein the distance between the suspended image and the aerial imaging display system has the following constraints: in This is the minimum distance between the suspended image and the beam splitter (3), which is also the distance between the suspended image and the aerial imaging display system; The equivalent focal length of the curved mirror (4); To show the path taken by the light beam emitted from the display source (1) to the curved reflector (4), i.e., the object distance; It is a cosine function; To display the angle between the source (1) and the vertical direction; The angle between the plane mirror (2) and the vertical direction; The angle between the beam splitter (3) and the vertical direction; For the thickness of the aerial imaging display system; .

3. The multi-folding reflective aerial imaging display system according to claim 2, characterized in that, When the beam from the curved mirror (4) exits horizontally from the beam splitter (3), the thickness of the aerial imaging display system... for: in The thickness of the aerial imaging display system; The horizontal distance between the center of the beam splitter (3) and the center of the curved mirror (4); The height of the beam splitter (3); The angle between the beam splitter (3) and the vertical direction; It is a sine function.

4. The multi-folding reflective aerial imaging display system according to claim 2, characterized in that, The object distance is adjusted by modifying the path of the light beam from the display source (1) to the plane mirror (2), the path of the light beam from the plane mirror (2) to the beam splitter (3), and / or the distance of the light beam from the beam splitter (3) to the curved mirror (4); where the object distance is: in To show the path taken by the light beam emitted from the display source (1) to the curved reflector (4), i.e., the object distance; The path taken by the light beam from the display source (1) to the plane mirror (2); To show the horizontal distance between the center of the source (1) and the center of the plane mirror (2); This is the path the light beam takes from the plane mirror (2) to the beam splitter (3); The vertical distance between the center of the plane mirror (2) and the center of the beam splitter (3); The distance traveled by the beam from the beam splitter (3) to the curved mirror (4) is denoted as .

5. The multi-folding reflective aerial imaging display system according to claim 2, characterized in that, The size of the suspending image is adjusted by adjusting the equivalent focal length and object distance of the curved reflector (4), the angle between the display source (1) and the vertical direction, the angle between the plane reflector (2) and the vertical direction, the angle between the beam splitter (3) and the vertical direction, and / or the width of the display source (1); wherein the size of the suspending image has the following constraints: in The size of the floating image; The equivalent focal length of the curved mirror (4); To show the path taken by the light beam emitted from the display source (1) to the curved reflector (4), i.e., the object distance; It is a cosine function; To display the angle between the source (1) and the vertical direction; The angle between the plane mirror (2) and the vertical direction; The angle between the beam splitter (3) and the vertical direction; To display the width of source (1).

6. The multi-folding reflective aerial imaging display system according to claim 2, characterized in that, The viewing angle of the suspended image is adjusted by adjusting the width of the curved reflector (4), the size of the suspended image, and / or the distance between the suspended image and the aerial imaging display system; wherein the viewing angle of the suspended image has the following constraints: in The viewing angle of the floating image; It is the tangent function; The width of the curved mirror (4); The size of the floating image; This is the minimum distance between the suspended image and the beam splitter (3), which is also the distance between the suspended image and the aerial imaging display system.

7. The multi-folding reflective aerial imaging display system according to claim 1, characterized in that, The width and focal length of the curved mirror (4) It has the following constraints: in The width of the curved mirror (4); The equivalent focal length of the curved mirror (4); Focal length of curved mirror (4) Width of display source (1) Width of the floating image It has the following constraints: in This is the minimum distance between the suspended image and the beam splitter (3), which is also the distance between the suspended image and the aerial imaging display system; The thickness of the aerial imaging display system.

8. The multi-fold reflective aerial imaging display system according to claim 1, characterized in that, When the beam from the curved mirror (4) exits the beam splitter (3) horizontally, the angle between the plane mirror (2) and the vertical direction is... The range of values ​​and the angle between the curved mirror (4) and the vertical direction. The range of values ​​for are as follows: 。 9. The multi-folding reflective aerial imaging display system according to claim 1, characterized in that, The vertical distance between the center of the plane mirror (2) and the center of the beam splitter (3) It has the following constraints: in The height of the plane mirror (2); The angle between the plane mirror (2) and the vertical direction; The height of the curved mirror (4); The angle between the curved mirror (4) and the vertical direction; It is a cosine function; The height of the beam splitter (3) is greater than or equal to the height of the curved mirror (4); Height of curved mirror (4) It has the following constraints: in is the width of the curved mirror (4).

10. The multi-folding reflective aerial imaging display system according to claim 1, characterized in that, When the beam from the curved mirror (4) exits horizontally from the beam splitter (3), the altitude of the aerial imaging display system is... for: in To show the vertical distance between the center of the source (1) and the center of the plane mirror (2); The vertical distance between the center of the plane mirror (2) and the center of the beam splitter (3); To display the height of source (1); The height of the beam splitter (3); To display the angle between the source (1) and the vertical direction; The angle between the beam splitter (3) and the vertical direction; It is a cosine function.

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