Holographic image generation device

Abstract

The utility model relates to the technical field of interactive equipment, in particular to a holographic image generating device, which comprises 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 mode, the image source is configured to emit image light rays, the image light rays sequentially pass through the first curved mirror, the reflecting mirror and the second curved mirror to form holographic images in the air, and the first curved mirror and the second curved mirror are both configured to converge the incident image light rays. According to the holographic image generation device, the first curved mirror and the second curved mirror are arranged in an off-axis mode, image light rays are sequentially converged so that the image light rays can be converged into a holographic image in the air, meanwhile, the reflecting mirror is arranged between the first curved mirror and the second curved mirror, and therefore the size of the holographic image generation device is reduced; the technical problems that in the prior art, due to arrangement of a light source and a lens, the whole device is bloated in structure and unreasonable in layout are solved, and the structure of the holographic image generation device is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of interactive equipment, and in particular to a holographic image generating device. Background Art

[0002] Currently, the intelligent interactive devices on the market are usually smart speakers that integrate artificial intelligence and voice recognition technology, and users can interact through natural language. For example, users can play music, check weather forecasts, set alarms, get news information, and even control smart home devices at home by issuing commands to smart speakers. The human-computer interaction screen usually uses traditional display screens to provide users with interactive screens, which has the problem of poor screen immersion, resulting in a poor interactive experience.

[0003] Currently, there are also holographic image generating devices on the market that project holographic images through one or more light sources that can be transmitted, reflected or emitted.

[0004] However, the arrangement of light sources and lenses will cause the overall device structure to be bloated and the layout to be unreasonable. Utility Model Content

[0005] The utility model aims to provide a holographic image generating device to solve the technical problem in the prior art that the arrangement of light sources and lenses will lead to a bloated overall device structure and unreasonable layout.

[0006] In a first aspect, the utility model provides a holographic image generating device, comprising an image source, a first curved mirror, a reflecting mirror and a second curved mirror;

[0007] The first curved mirror and the second curved mirror are arranged off-axis, the image source is configured to emit image light, the image light passes through the first curved mirror, the reflector and the second curved mirror in sequence to form a holographic image in the air, and the first curved mirror and the second curved mirror are both configured to converge the incident image light.

[0008] Furthermore, the reflector is configured as a plane reflector.

[0009] Furthermore, the reflector is configured as a curved reflector.

[0010] Furthermore, the incident angle of the image light on the first curved mirror is a first incident angle, the incident angle of the image light on the reflector is a second incident angle, and the incident angle of the image light on the second curved mirror is a 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°.

[0011] Furthermore, 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 1.5-2.5 times the sum of the focal length of the first curved mirror and the focal length of the second curved mirror.

[0012] Furthermore, 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.

[0013] Furthermore, the holographic image generating device also includes a shell, a receiving cavity is provided in the shell, and the image source, the first curved mirror, and the reflecting mirror are arranged in the receiving cavity.

[0014] Furthermore, the shell also includes a base shell, a top shell and a supporting structure for connecting the base shell and the top shell.

[0015] Furthermore, the accommodating cavity is arranged in the top shell, and the second curved mirror is attached to the surface of the base shell.

[0016] Furthermore, the accommodating cavity is arranged on the base shell, and the second curved mirror is attached to the surface of the supporting structure.

[0017] Compared with the prior art, the utility model provides a holographic image generating device, comprising an image source, a first curved mirror, a reflector and a second curved mirror; the first curved mirror and the second curved mirror are arranged off-axis, the image source is configured to emit image light, the image light passes through the first curved mirror, the reflector and the second curved mirror in sequence to form a holographic image in the air, the first curved mirror and the second curved mirror are both configured to converge the incident image light, and the image light is converged in sequence by setting the first curved mirror and the second curved mirror off-axis, so that the image light is converged into a holographic image in the air, and the reflector is arranged between the first curved mirror and the second curved mirror, thereby reducing the required distance between the first curved mirror and the second curved mirror, reducing the volume of the holographic image generating device, so as to solve the technical problems in the prior art that the arrangement of the light source and the lens will lead to a bloated overall device structure and unreasonable layout, and improve the image projection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is an overall structural diagram of the holographic image generating device provided in the first embodiment of the present utility model;

[0020] Figure 2 This is a side view of the overall structure of the holographic image generating device provided in the first embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the positions of the curved mirror and the reflective mirror in the holographic image generating device provided in the first embodiment of the present utility model;

[0022] Figure 4 This is an overall structural diagram of the holographic image generating device provided in the second embodiment of the present utility model;

[0023] Figure 5 This is a side view of the overall structure of the holographic image generating device provided in the second embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the positions of the curved mirror and the reflective mirror in the holographic image generating device provided in the second embodiment of the present utility model.

[0025] Reference numerals:

[0026] 100. Image source;

[0027] 200, a first curved mirror;

[0028] 300, reflector;

[0029] 400, a second curved mirror;

[0030] 500, housing; 510, base housing; 520, top housing; 530, supporting structure;

[0031] 600, Eye Box;

[0032] 700. Holographic image. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] Embodiment 1

[0041] like Figures 1 to 3As shown, an embodiment of the utility model provides a holographic image generating 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 arranged off-axis, the image source 100 is configured to emit image light, and the image light passes through the first curved mirror 200, the reflector 300 and the second curved mirror 400 in sequence to form a holographic image 700 in the air, and the first curved mirror 200 and the second curved mirror 400 are both configured to converge the incident image light.

[0042] That is, the embodiment of the utility model provides a holographic image generating device, which converges image light in turn through a first curved mirror 200 and a second curved mirror 400, so that the image light converges into a holographic image 700 in the air, and at the same time, a reflecting mirror 300 is arranged between the first curved mirror 200 and the second curved mirror 400 to shorten the required distance between the first curved mirror 200 and the second curved mirror 400, thereby reducing the volume of the holographic image generating device, so as to solve the technical problem in the prior art that the arrangement of the light source and the lens will lead to a bloated overall device structure and an unreasonable layout, thereby improving the image projection effect.

[0043] Specifically, the image source 100 is set as a light-emitting screen, and the image to be presented can be displayed through a color LCD screen, a liquid crystal display screen, a diffusion film and other devices. The first curved mirror 200 is set as a concave mirror, and its mirror surface faces the image source 100, receives the image light emitted by the image source 100, and converges the divergent light beams emitted by each object point on the image source 100 to form a nearly parallel light beam, which is reflected to the transmitting mirror, and the reflector 300 reflects the image light reflected by the first curved mirror 200 to the second curved mirror 400 again. The second curved mirror 400 focuses the quasi-parallel light beam from the reflector 300, and finally converges the holographic image 700 in the air, so that the user can clearly observe the holographic image 700 at the position of the eye box 600. The first curved mirror 200 and the second curved mirror 400 are set off-axis, which can reduce the space required for the arrangement of the first curved mirror 200 and the second curved mirror 400, so that the position layout of the holographic image generation device is more reasonable.

[0044] Further, the reflector 300 is configured as a plane reflector.

[0045] Specifically, the reflector 300 is configured as a plane reflector, and there is an off-axis in one of the vertical or horizontal directions between the first curved mirror 200 and the second curved mirror 400. Thus, the 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, thereby reducing the volume of the holographic image generating device.

[0046] Furthermore, the reflector 300 is configured as a curved reflector.

[0047] Specifically, the reflector 300 is configured as a curved reflector. There is an off-axis in two dimensions, vertical and horizontal, between the first curved mirror 200 and the second curved mirror 400. At this time, the aberration between the first curved mirror 200 and the second curved mirror 400 is increased. The reflector 300 is configured as a curved reflector, which can compensate for the aberration between the first curved mirror 200 and the second curved mirror 400 while folding the optical path to reduce the volume of the system.

[0048] Furthermore, the holographic image generating device further includes a housing 500 , in which a receiving cavity is provided, and the image source 100 , the first curved mirror 200 , and the reflecting mirror 300 are provided in the receiving cavity.

[0049] Specifically, in this embodiment, the housing 500 is entirely injection molded from a plastic material. The image source 100, the first curved mirror 200, and the reflector 300 can be fixed in the receiving cavity by bolts and a mounting frame to prevent external dust from passing through the mirror surface and the screen and affecting the imaging effect. The second curved mirror 400 is fixed to the housing 500 outside the receiving cavity, a window is provided on the housing 500, and a serial port is provided 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 and irradiate the second curved mirror 400.

[0050] Preferably, the housing 500 further includes a base shell 510 , a top shell 520 , and a supporting structure 530 for connecting the base shell 510 and the top shell 520 .

[0051] Specifically, in this embodiment, the shell is in the shape of a table lamp as a whole. The top shell 520 is hemispherical, and a hemispherical receiving cavity is provided in the top shell 520, and the image source 100, the first curved mirror 200, and the reflector 300 are provided in the receiving cavity. The support mechanism is provided as a support column, which is provided in the vertical direction to connect the top shell 520 and the bottom shell. A curved groove is provided on the bottom shell, and the second curved mirror 400 is fixed in the curved groove. The window is provided on the bottom wall of the top shell 520, the image source 100 is provided on the top of the receiving cavity, and the first curved mirror 200 and the reflector 300 are provided on both sides of the receiving cavity, respectively, so that the image light emitted by the image source 100 can be reflected and converged in sequence to illuminate the second curved mirror 400, and at the same time ensure that the top shell 520 can block the external light from irradiating the second curved mirror 400, thereby ensuring that the picture of the holographic image 700 is clean and free of stray light.

[0052] Furthermore, the incident angle of the image light on the first curved mirror 200 is a first incident angle, the incident angle of the image light on the reflector 300 is a second incident angle, and the incident angle of the image light on the second curved mirror 400 is a 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°.

[0053] Specifically, in this embodiment, 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 properly configuring the first incident angle, the second incident angle, and the third incident angle, it is ensured that the image light can achieve a good convergence effect, so that the holographic image 700 has a higher definition.

[0054] Preferably, 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 1.5-2.5 times the sum of the focal length of the first curved mirror 200 and the focal length of the second curved mirror 400.

[0055] Specifically, in this embodiment, 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 length of the first curved mirror 200 and the focal length of the second curved mirror 400. By optimizing the focal length position of the reflector 300, the aberration compensation effect of the reflector 300 can be ensured, while reducing the focusing difficulty of the holographic image generating device.

[0056] Furthermore, 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 reflector 300 to the holographic image 700 is 0.5-1.5 times the focal length of the second curved mirror 400 .

[0057] Specifically, in this embodiment, the distance from the first curved mirror 200 to the image source 100 is 1 times the focal length of the first curved mirror 200. And the distance from the reflector 300 to the holographic image 700 is 1 times the focal length of the second curved mirror 400, thereby ensuring that the first curved mirror 200 is arranged near the focus of the image source 100, and at the same time ensuring that the second curved mirror 400 is arranged near the focus of the reflector 300. In this way, the demand for the focal power of the reflector 300 during the optical path arrangement can be reduced, the difficulty of focusing the reflector 300 can be reduced, and the holographic image 700 device can be compact, beautiful and reasonable after the arrangement.

[0058] Embodiment 2

[0059] like Figures 4 to 6As shown, the holographic image generating device provided in this embodiment is different from the first embodiment only in the positions of the housing 500, the receiving cavity and the second curved mirror 400. For the same parts as those in the first embodiment, this embodiment will not repeat them. In the holographic image generating device provided in this embodiment, the receiving cavity is set in the base housing 510, and the second curved mirror 400 is attached to the surface of the supporting structure 530.

[0060] Specifically, in this embodiment, the shell is in the shape of a kettle as a whole. An approximately cubic shaped accommodating cavity is provided in the bottom shell, and the image source 100, the first curved mirror 200, and the reflector 300 are provided in the accommodating cavity. The supporting mechanism is provided as a supporting wall, which is provided above the bottom shell in the vertical direction to connect the top shell 520 and the bottom shell. A curved groove is provided on the supporting wall, and the second curved mirror 400 is fixed in the curved groove. The window is provided on the top wall of the bottom shell, the image source 100 is provided at the bottom of the accommodating cavity, and the first curved mirror 200 and the reflector 300 are provided on both sides of the accommodating cavity, respectively, so that the image light emitted by the image source 100 can be reflected and converged in sequence to illuminate the second curved mirror 400, while ensuring that the top shell 520 can block the external light from irradiating the second curved mirror 400, thereby ensuring that the picture of the holographic image 700 is clean and free of stray light.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A holographic image generating device, characterized in that: It comprises 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 arranged off-axis, the image source (100) is configured to emit image light, the image light passes through the first curved mirror (200), the reflector (300) and the second curved mirror (400) in sequence to form a holographic image (700) in the air, and the first curved mirror (200) and the second curved mirror (400) are both configured to converge the incident image light.

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

3. The holographic image generating device according to claim 1, characterized in that: The reflector (300) is configured as a curved reflector.

4. The holographic image generating device according to claim 1, characterized in that: The incident angle of the image light on the first curved mirror (200) is a first incident angle, the incident angle of the image light on the reflector (300) is a second incident angle, and the incident angle of the image light on the second curved mirror (400) is a 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°.

5. The holographic image generating device according to claim 1, 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).

6. The holographic image generating device according to claim 1, 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 reflector (300) to the holographic image (700) is 0.5-1.5 times the focal length of the second curved mirror (400).

7. The holographic image generating device according to any one of claims 1 to 6, characterized in that: The holographic image generating device further comprises a housing (500), wherein a receiving cavity is arranged in the housing (500), and the image source (100), the first curved mirror (200), and the reflecting mirror (300) are arranged in the receiving cavity.

8. The holographic image generating device according to claim 7, characterized in that: The housing (500) further comprises a base shell (510), a top shell (520), and a support structure (530) for connecting the base shell (510) and the top shell (520).

9. The holographic image generating device according to claim 8, characterized in that: The accommodating cavity is arranged on the top shell (520), and the second curved mirror (400) is attached to the surface of the base shell (510).

10. The holographic image generating device according to claim 8, characterized in that: The accommodating cavity is arranged on the base shell (510), and the second curved mirror (400) is attached to the surface of the supporting structure (530).

Images