Holographic image generation apparatus

Abstract

The present disclosure relates to the technical field of interaction devices, and in particular to a holographic image generation apparatus, comprising an image source, a first curved mirror, a reflecting mirror, and a second curved mirror; the first curved mirror and the second curved mirror are arranged in an off-axis manner; the image source is configured to emit image light; the image light sequentially passes through the first curved mirror, the reflecting mirror and the second curved mirror to form a holographic image in the air; both the first curved mirror and the second curved mirror are configured to converge incident image light. The first curved mirror and the second curved mirror are arranged in an off-axis manner to sequentially converge the image light, so that the image light converges in the air to form a holographic image; additionally, the reflecting mirror is arranged between the first curved mirror and the second curved mirror, thereby reducing the volume of the holographic image generation apparatus. Thus, the technical problem in the prior art that the arrangement of light sources and lenses may lead to an overly bulky overall apparatus structure and an unreasonable layout is solved, and the structure of the holographic image generation apparatus is optimized.

Description

A holographic image generation device

[0001] Cross-references to related applications

[0002] This disclosure claims priority to Chinese Patent Application No. 202420868404.1, filed on April 24, 2024, entitled "A Holographic Image Generating Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of interactive device technology, and more particularly to a holographic image generation device. Background Technology

[0004] Currently, smart interactive devices on the market are typically smart speaker products that integrate artificial intelligence and voice recognition technology, allowing users to interact through natural language. For example, users can issue commands to the smart speaker to play music, check the weather forecast, set alarms, get news, and even control smart home devices. However, the human-computer interaction screen usually uses a traditional display screen to provide the interactive interface, which suffers from poor screen immersion and a subpar interactive experience.

[0005] Currently, there are also holographic image generation devices on the market that project holographic images using one or more light sources that can conduct, reflect, or emit light.

[0006] However, the arrangement of the light source and lenses results in a bulky overall device structure and an unreasonable layout.

[0007] Summary of the Invention

[0008] The purpose of this disclosure is to provide a holographic image generation device to solve the technical problem that the arrangement of light sources and lenses in the prior art leads to a bulky overall device structure and an unreasonable layout.

[0009] In a first aspect, the present disclosure provides a holographic image generation device, including an image source, a first curved mirror, a reflecting mirror, and a second curved mirror;

[0010] The first curved mirror and the second curved mirror are off-axis. The image source is configured to emit image light rays. The image light rays pass through the first curved mirror, the reflector and the second curved mirror in sequence to form a holographic image in the air. Both the first curved mirror and the second curved mirror are configured to converge the incident image light rays.

[0011] Optionally, the reflector is configured as a plane reflector.

[0012] Optionally, the reflector is configured as a curved reflector.

[0013] Optionally, the incident angle of the image light on the first curved mirror is the first incident angle, the incident angle of the image light on the reflecting mirror is the second incident angle, and the incident angle of the image light on the second curved mirror is the third incident angle. The first incident angle is 13-22°, the second incident angle is 18-32°, and the third incident angle is 10-20°.

[0014] Optionally, the sum of the distance from the reflector to the first curved mirror and the distance from the reflector to the second curved mirror is 1.5 to 2.5 times the sum of the focal length of the first curved mirror and the focal length of the second curved mirror.

[0015] Optionally, the distance from the first curved mirror to the image source is 0.5-1.5 times the focal length of the first curved mirror; and / or, the distance from the second curved mirror to the holographic image is 0.5-1.5 times the focal length of the third curved mirror.

[0016] Optionally, the holographic image generating device further includes a housing, in which a receiving cavity is provided, and the image source, the first curved mirror, and the reflector are disposed within the receiving cavity.

[0017] Optionally, the housing further includes a base housing, a top housing, and a support structure for connecting the base housing and the top housing.

[0018] Optionally, the receiving cavity is disposed in the top housing, and the second curved mirror is attached to the surface of the base housing.

[0019] Optionally, the receiving cavity is disposed in the base housing, and the second curved mirror is attached to the surface of the support structure.

[0020] This disclosure provides a holographic image generation device, including an image source, a first curved mirror, a reflector, and a second curved mirror. The first and second curved mirrors are arranged off-axis. The image source is configured to emit image light rays, which pass sequentially through the first curved mirror, the reflector, and the second curved mirror to form a holographic image in the air. Both the first and second curved mirrors are configured to converge the incident image light rays. By setting the first and second curved mirrors off-axis, the image light rays are converged sequentially to form a holographic image in the air. Simultaneously, a reflector is placed between the first and second curved mirrors, thereby reducing the required distance between them and decreasing the size of the holographic image generation device. This solves the technical problem in the prior art where the arrangement of the light source and mirrors leads to a bulky overall device structure and unreasonable layout, thus improving the image projection effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 is an overall structural diagram of the holographic image generation apparatus provided in an optional embodiment of this disclosure;

[0023] Figure 2 is a side view of the overall structure of the holographic image generation device provided in an optional embodiment of this disclosure;

[0024] Figure 3 is a schematic diagram showing the positions of the curved mirror and the reflecting mirror in the holographic image generation device provided in an optional embodiment of this disclosure;

[0025] Figure 4 is an overall structural diagram of the holographic image generation apparatus provided in an optional embodiment of this disclosure;

[0026] Figure 5 is a side view of the overall structure of the holographic image generation apparatus provided in an optional embodiment of this disclosure;

[0027] Figure 6 is a schematic diagram showing the positions of the curved mirror and the reflector in the holographic image generation device provided in an optional embodiment of this disclosure.

[0028] Reference numerals: 100, image source; 200, first curved mirror; 300, reflecting mirror; 400, second curved mirror; 500, outer shell; 510, base shell; 520, top shell; 530, support structure; 540, receiving cavity; 550, window; 560, curved groove; 600, eye box; 700, holographic image. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0035] The following detailed description of some embodiments of this disclosure is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] As shown in Figures 1 to 3, this embodiment of the present disclosure provides a holographic image generation device, including an image source 100, a first curved mirror 200, a reflector 300, and a second curved mirror 400; the first curved mirror 200 and the second curved mirror 400 are off-axis, the image source 100 is configured to emit image light rays, and the image light rays pass sequentially through the first curved mirror 200, the reflector 300, and the second curved mirror 400 to form a holographic image 700 in the air, and both the first curved mirror 200 and the second curved mirror 400 are configured to converge the incident image light rays.

[0037] This disclosure provides a holographic image generation device that uses a first curved mirror 200 and a second curved mirror 400 to sequentially converge image light rays, causing the image light rays to converge in the air to form a holographic image 700. At the same time, a reflector 300 is set between the first curved mirror 200 and the second curved mirror 400 to reduce the required distance between the first curved mirror 200 and the second curved mirror 400, thereby reducing the size of the holographic image generation device. This solves the technical problem in the prior art where the arrangement of light sources and lenses leads to a bulky overall device structure and unreasonable layout, and improves the image projection effect.

[0038] Optionally, the image source 100 is configured as a light-emitting screen, which can display the desired image through a color LCD screen, LCD display, diffusion film, or other devices. The first curved mirror 200 is a concave mirror with its surface facing the image source 100. It receives the image light emitted by the image source 100 and converges the divergent beams emitted by each object point on the image source 100 to form approximately parallel beams, which are then reflected towards the reflector 300. The reflector 300 reflects the image light reflected by the first curved mirror 200 again to the second curved mirror 400. The second curved mirror 400 focuses the approximately parallel beams from the reflector 300, ultimately converging them in the air to form a holographic image 700, allowing the user to clearly observe the holographic image 700 from the position of the eye box 600. The off-axis arrangement of the first curved mirror 200 and the second curved mirror 400 reduces the space required for their placement, thus making the layout of the holographic image generating device more reasonable.

[0039] Alternatively, the reflector 300 may be configured as a plane reflector.

[0040] Optionally, the reflector 300 is configured as a plane reflector, while the opposing first curved mirror 200 and second curved mirror 400 are off-axis in one of the vertical or horizontal dimensions. Thus, image light can be reflected by the plane mirror, thereby reducing the distance between the first curved mirror 200 and the second curved mirror 400, and consequently reducing the size of the holographic image generation device.

[0041] Optionally, the reflector 300 is configured as a curved reflector.

[0042] Optionally, the reflector 300 is configured as a curved reflector. There is off-axis displacement between the first curved mirror 200 and the second curved mirror 400 in both the vertical and horizontal dimensions, which increases the aberration between them. Configuring the reflector 300 as a curved reflector can compensate for the aberrations of the first and second curved mirrors 200 and 400 while reducing the system size through optical path folding.

[0043] Optionally, the holographic image generating device may also include a housing 500, in which a receiving cavity 540 is provided, and the image source 100, the first curved mirror 200 and the reflector 300 are disposed in the receiving cavity 540.

[0044] Optionally, the housing 500 is entirely injection molded from plastic. The image source 100, the first curved mirror 200, and the reflector 300 can be fixed within the receiving cavity 540 by bolts and mounting brackets to prevent external dust from bypassing the mirror and screen and affecting the imaging effect. The second curved mirror 400 is fixed to the housing 500 outside the receiving cavity 540. A window 550 is provided on the housing 500, which is located between the second curved mirror 400 and the reflector 300, so that the image light reflected by the reflector 300 can pass through the window 550 and illuminate the second curved mirror 400.

[0045] Optionally, the housing 500 may include a base housing 510, a top housing 520, and a support structure 530 for connecting the base housing 510 and the top housing 520.

[0046] Optionally, in this embodiment, the outer casing 500 is shaped like a table lamp. The top casing 520 is hemispherical, and a hemispherical receiving cavity 540 is provided inside the top casing 520. The image source 100, the first curved mirror 200, and the reflector 300 are disposed within the receiving cavity 540. The support structure 530 is configured as a support column, arranged vertically, to connect the top casing 520 and the base casing 510. A curved groove 560 is provided on the base casing 510, and the second curved mirror 400 is fixed within the curved groove 560. The window 550 is located on the bottom wall of the top housing 520, the image source 100 is located on the top of the cavity 540, and the first curved mirror 200 and the reflector 300 are respectively located on both sides of the cavity 540. This allows the image light emitted by the image source 100 to be reflected and converged in sequence to illuminate the second curved mirror 400. At the same time, the top housing 520 can block external light from illuminating the second curved mirror 400, thereby ensuring that the holographic image 700 is clean and free of stray light.

[0047] Optionally, the image light rays are incident at the first curved mirror 200 at the first incident angle, the image light rays are incident at the second incident angle at the second mirror 300 at the second incident angle, and the image light rays are incident at the third incident angle at the second curved mirror 400. The first incident angle can be 13-24°, and the first incident angle can be further selected as 13-22°; the second incident angle can be 18-32°, and the second incident angle can be further selected as 20-30°; the third incident angle can be 10-20°, and the third incident angle can be further selected as 12-18°.

[0048] In some optional embodiments, the first incident angle is set to 22.4°, the second incident angle is set to 30.56°, and the third incident angle is set to 19.42°. By reasonably configuring the first, second, and third incident angles, the image light can achieve a better converging effect, so that the holographic image 700 can achieve a high degree of clarity.

[0049] Optionally, the sum of the distance from the reflector 300 to the first curved mirror 200 and the distance from the reflector 300 to the second curved mirror 400 is 1.5 to 2.5 times the sum of the focal length of the first curved mirror 200 and the focal length of the second curved mirror 400.

[0050] Optionally, the sum of the distance from the reflector 300 to the first curved mirror 200 and the distance from the reflector 300 to the second curved mirror 400 is twice the sum of the focal lengths of the first curved mirror 200 and the second curved mirror 400. By setting the focal length position of the reflector 300, the aberration compensation effect of the reflector 300 can be guaranteed, while reducing the focusing difficulty of the holographic image generation device.

[0051] Optionally, the distance from the first curved mirror 200 to the image source 100 is 0.5-1.5 times the focal length of the first curved mirror 200; and / or, the distance from the reflecting mirror 300 to the holographic image 700 is 0.5-1.5 times the focal length of the second curved mirror 400.

[0052] Optionally, the distance from the first curved mirror 200 to the image source 100 is twice the focal length of the first curved mirror 200. Furthermore, the distance from the reflecting mirror 300 to the holographic image 700 is twice the focal length of the second curved mirror 400. This ensures that the first curved mirror 200 is positioned near the focal point of the image source 100, while simultaneously ensuring that the second curved mirror 400 is positioned near the focal point of the reflecting mirror 300. This reduces the optical power requirement for the reflecting mirror 300 during optical path arrangement, lowers the focusing difficulty of the reflecting mirror 300, and makes the holographic image 700 device compact, aesthetically pleasing, and logically designed after arrangement.

[0053] As shown in Figures 4 to 6, the holographic image generating apparatus provided in some optional embodiments of this disclosure differs only in the positions of the housing 500, the accommodating cavity 540, and the second curved mirror 400. In the holographic image generating apparatus provided in some optional embodiments of this disclosure, the accommodating cavity 540 is disposed on the base housing 510, and the second curved mirror 400 is attached to the surface of the support structure 530.

[0054] Optionally, the overall housing is shaped like a kettle. An approximately cubic cavity 540 is provided within the base housing 510, where the image source 100, the first curved mirror 200, and the reflector 300 are disposed. A support structure 530 is configured as a support wall, vertically positioned above the base housing 510 to connect the top housing 520 and the base housing 510. A curved groove 560 is provided on the support wall, within which the second curved mirror 400 is fixed. The window 550 is located on the top wall of the base housing 510, the image source 100 is located at the bottom of the cavity 540, and the first curved mirror 200 and the reflector 300 are respectively located on both sides of the cavity 540. This allows the image light emitted by the image source 100 to be reflected and converged in sequence to illuminate the second curved mirror 400. At the same time, the top housing 520 can block external light from illuminating the second curved mirror 400, thereby ensuring that the holographic image 700 is clean and free of stray light.

[0055] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

[0056] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims. Industrial applicability

[0057] By setting the first and second curved mirrors off-axis, the image light rays are converged sequentially, so that the image light rays converge in the air to form a holographic image. At the same time, a reflector is set between the first and second curved mirrors, thereby reducing the distance required to arrange the first and second curved mirrors and reducing the size of the holographic image generation device. This solves the technical problem that the arrangement of light sources and lenses in the prior art leads to a bulky overall device structure and unreasonable layout, and improves the image projection effect.

Claims

1. A holographic image generation device, characterized in that, It includes an image source (100), a first curved mirror (200), a reflecting mirror (300), and a second curved mirror (400); The first curved mirror (200) and the second curved mirror (400) are off-axis. The image source (100) is configured to emit image light rays. The image light rays pass sequentially through the first curved mirror (200), the reflector (300), and the second curved mirror (400) to form a holographic image (700) in the air. Both the first curved mirror (200) and the second curved mirror (400) are configured to converge the incident image light rays.

2. The holographic image generation apparatus according to claim 1, characterized in that, The reflector (300) is configured as a plane reflector.

3. The holographic image generation apparatus according to claim 2, characterized in that, There is an off-axis position in either the vertical or horizontal direction between the first curved mirror (200) and the second curved mirror (400).

4. The holographic image generation apparatus according to claim 1, characterized in that, The reflector (300) is configured as a curved reflector.

5. The holographic image generation apparatus according to claim 4, characterized in that, There are two dimensions of off-axis, namely the vertical and horizontal, between the first curved mirror (200) and the second curved mirror (400).

6. The holographic image generation apparatus according to any one of claims 1-5, characterized in that, The first curved mirror (200) is a concave mirror with its surface facing the image source (100). It is configured to receive the image light emitted by the image source (100), and to converge the divergent beams emitted by each object point on the image source (100) to form approximately parallel beams, which are then reflected towards the reflecting mirror (300).

7. The holographic image generation apparatus according to any one of claims 1-6, characterized in that, The incident angle of the image light on the first curved mirror (200) is the first incident angle, the incident angle of the image light on the reflecting mirror (300) is the second incident angle, and the incident angle of the image light on the second curved mirror (400) is the third incident angle. The first incident angle is 13-24°, the second incident angle is 18-32°, and the third incident angle is 10-20°.

8. The holographic image generation apparatus according to any one of claims 1-7, characterized in that, The sum of the distance from the reflector (300) to the first curved mirror (200) and the distance from the reflector (300) to the second curved mirror (400) is 1.5 to 2.5 times the sum of the focal length of the first curved mirror (200) and the focal length of the second curved mirror (400).

9. The holographic image generation apparatus according to any one of claims 1-8, characterized in that, The distance from the first curved mirror (200) to the image source (100) is 0.5-1.5 times the focal length of the first curved mirror (200); and / or, the distance from the reflecting mirror (300) to the holographic image (700) is 0.5-1.5 times the focal length of the second curved mirror (400).

10. The holographic image generation apparatus according to any one of claims 1-9, characterized in that, The holographic image generating device further includes a housing (500), and a receiving cavity is provided inside the housing (500). The image source (100), the first curved mirror (200), and the reflector (300) are disposed in the receiving cavity.

11. The holographic image generation apparatus according to claim 10, characterized in that, The second curved mirror (400) is fixed on the outer shell (500) outside the cavity. A window (550) is provided on the outer shell (500) and the window (550) is located between the second curved mirror (400) and the reflector (300).

12. The holographic image generation apparatus according to claim 10 or 11, characterized in that, The outer casing (500) also includes a base casing (510), a top casing (520), and a support structure (530) for connecting the base casing (510) and the top casing (520).

13. The holographic image generation apparatus according to claim 12, characterized in that, The accommodating cavity is disposed in the top housing (520), and the second curved mirror (400) is attached to the surface of the base housing (510).

14. The holographic image generation apparatus according to claim 13, characterized in that, The support structure (530) is configured as a support column and is arranged in a vertical direction to connect the top shell (520) and the base shell (510). A curved groove (560) is provided on the base shell (510), and the second curved mirror (400) is fixed in the curved groove (560).

15. The holographic image generation apparatus according to claim 12, characterized in that, The accommodating cavity is disposed in the base housing (510), and the second curved mirror (400) is attached to the surface of the support structure (530).

16. The holographic image generation apparatus according to claim 15, characterized in that, The support structure (530) is configured as a support wall and is arranged vertically above the base housing (510) to connect the top housing (520) and the base housing (510). A curved groove (560) is provided on the support wall, and the second curved mirror (400) is fixed in the curved groove (560).

Images