Display device, robot, and vehicle

Abstract

The application discloses a display device, a robot and a vehicle, and relates to the technical field of display devices. The display device comprises a transparent spherical screen cover, which has a containing cavity; an image generation unit, which is used for generating image data; an optical machine module, which is connected with the image generation unit, and has an optical signal output end, is used for converting the image data into optical signals and outputting the optical signals by the optical signal output end, and the optical signal output end is located in the containing cavity; and a fisheye projection lens, which is arranged on the optical signal output end of the optical machine module and is located in the containing cavity; wherein the optical signals output by the optical signal output end are projected onto the transparent spherical screen cover through the fisheye projection lens, and a holographic image corresponding to the image data is formed on the transparent spherical screen cover. The application can improve the visual experience effect of a user.

Description

Technical Field

[0001] This application relates to the field of display devices, and more particularly to a display device, a robot, and a vehicle. Background Technology

[0002] Display devices are used to display content such as video, images, and text, and are widely used in computers, televisions, smartphones, in-vehicle terminals, and many other devices. Depending on the technology and application, displays can come in various forms and specifications.

[0003] In related technologies, traditional flat panel displays (such as LCD / OLED displays) require viewing from the front and have a low viewing angle, resulting in a poor user visual experience. Summary of the Invention

[0004] This application proposes a display device, robot, and vehicle that can improve the user's visual experience.

[0005] The display device according to the first aspect of this application includes:

[0006] A transparent spherical curtain, wherein the transparent spherical curtain has a receiving cavity;

[0007] Image generation unit, used to generate image data;

[0008] An optical-mechanical module is connected to the image generation unit. The optical-mechanical module has an optical signal output terminal for converting image data into optical signals and outputting them through the optical signal output terminal. The optical signal output terminal is located in the accommodating cavity.

[0009] A fisheye projection lens is disposed at the optical signal output end of the optical engine module and located in the accommodating cavity;

[0010] The optical signal output from the optical signal output terminal is projected onto the transparent spherical screen through the fisheye projection lens, forming a holographic image on the transparent spherical screen that corresponds to the image data.

[0011] According to some embodiments of this application, the field of view of the fisheye projection lens is greater than or equal to 210°.

[0012] According to some embodiments of this application, the surface of the transparent spherical dome is provided with a micro-nano structured optical diffusion layer.

[0013] According to some embodiments of this application, the diffusion angle of the transparent spherical screen is less than 25°; and / or, the light transmittance of the transparent spherical screen is greater than 70%.

[0014] According to some embodiments of this application, the feature size of the optical diffusion layer is less than 5 μm.

[0015] According to some embodiments of this application, the surface roughness of the optical diffusion layer is less than 2 μm.

[0016] According to some embodiments of this application, the refractive index of the transparent spherical hood is greater than or equal to 1.518 and less than or equal to 1.585.

[0017] According to some embodiments of this application, the display device further includes a sensing module for acquiring user interaction information, and the sensing module is connected to the image generation unit. According to a second aspect embodiment of this application, a robot is equipped with the display device described in the first aspect embodiment.

[0018] According to a third aspect embodiment of the present application, the vehicle's cabin is provided with a display device as described in the first aspect embodiment.

[0019] The display device, robot, and vehicle according to the embodiments of this application have at least the following beneficial effects:

[0020] In this embodiment, image data is generated by an image generation unit, and an optical engine module generates light signals based on the image data. The signals are then projected onto a transparent spherical screen through a fisheye projection lens to form a holographic image corresponding to the image data. Since the screen is made of a transparent sphere, a stereoscopic holographic image can be presented. This application can achieve full-view coverage and display three-dimensional spatial information, increasing the realism and immersion of the visual experience and improving the user's visual experience.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of the display device provided in this application;

[0024] Figure 2 A schematic diagram illustrating the refraction principle of the fisheye projection lens provided in this application;

[0025] Figure 3 A schematic diagram illustrating the display effect of the holographic image provided in this application.

[0026] Icon labels:

[0027] Transparent spherical screen 100, optical engine module 200, fisheye projection lens 300, refractive lens 310. Detailed Implementation

[0028] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0029] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0030] To address the problems of the prior art, the first aspect of this application provides a display device, a robot, and a vehicle. The display device provided in the first aspect of this application will be described below.

[0031] Figure 1 A schematic diagram of the structure of a display device provided in a first aspect embodiment of this application is shown. A display device includes:

[0032] A transparent spherical screen 100, the transparent spherical screen 100 having a receiving cavity;

[0033] Image generation unit, used to generate image data;

[0034] The optomechanical module 200 is connected to the image generation unit. The optomechanical module 200 has an optical signal output terminal, which is used to convert image data into optical signals and output them by the optical signal output terminal. The optical signal output terminal is located in the accommodating cavity.

[0035] Fisheye projection lens 300 is located at the optical signal output end of the optical engine module 200 and is situated in the accommodating cavity.

[0036] The optical signal output from the optical signal output terminal is projected onto the transparent spherical screen 100 through the fisheye projection lens 300, forming a holographic image corresponding to the image data on the transparent spherical screen 100.

[0037] In this embodiment, image data is generated by an image generation unit, and an optical-mechanical module 200 generates light signals based on the image data. The signals are then projected onto a transparent spherical screen 100 through a fisheye projection lens 300 to form a holographic image corresponding to the image data. Since a transparent spherical screen 100 is used, a stereoscopic holographic image can be presented. This application can achieve full-view coverage and three-dimensional spatial information display, increasing the realism and immersion of the visual experience and improving the user's visual experience.

[0038] The aforementioned transparent spherical screen 100 refers to a transparent spherical shell. In this embodiment, the transparent spherical screen 100 is precisely made of high-transmittance optical-grade glass or special polymer materials. High transmittance refers to a refractive index n = 1.518-1.585. Using the transparent spherical screen 100 as a projection screen, a three-dimensional holographic image can be formed in the three-dimensional space inside the transparent sphere through optical projection.

[0039] The aforementioned optical-mechanical module 200 refers to a component that converts electrical signals into optical signals for an image using a display chip and an LED light source, and projects the image through a lens. Specifically, in the optical-mechanical module 200, the light source provides high-brightness illumination; the light source can be an LED or a laser source. The display chip modulates the light according to the input image data to form a corresponding optical signal. The optical signal is shaped and guided by optical components such as a relay lens and a reflector before being output from the optical signal output end to the fisheye projection lens 300. The optical-mechanical module 200 can adopt any of LCoS, DLP, or MEMS. For example, in this embodiment, the optical-mechanical module 200 using LCoS display technology has a display chip size of 0.37 inches and a resolution of up to 1920x1080, which can provide high-definition images for the display device. In this embodiment, the LED light source used in the optical-mechanical module 200 provides a luminous flux of no less than 60 lumens to the display device, which can meet the requirement that the display brightness reaches more than 1000 nits.

[0040] The aforementioned image generation unit mainly includes an electronic PCBA motherboard, which provides the software functions for the entire display system. The image generation unit can communicate with an external control host to generate image data, or it can generate image data through its own storage module.

[0041] The external control host can be different devices in different display fields. For example, in the field of automotive smart cockpit displays, the external control host can be a cockpit domain controller; in the field of smart displays, it can be a computer host or a network player; and in the field of AI robots, it can be an artificial intelligence host. The external control host transmits video / data information from the host to the image generation unit through a video communication network to generate image data.

[0042] The aforementioned fisheye projection lens 300 refers to an optical lens with an ultra-wide-angle field of view, capable of capturing and projecting images over a wide area. Ultra-wide-angle field of view refers to a field of view greater than 180 degrees. (Reference) Figure 2 As shown, the fisheye projection lens 300 refracts light carrying image information into the lens system through the refractive lens 310 for transmission. The lens system of the fisheye projection lens 300 generates corresponding optical power by combining lenses with different refractive indices, thereby controlling the light to be refracted onto the transparent spherical screen 100 for projection.

[0043] The principle of holographic projection in this application is as follows: the fisheye projection lens 300 bends the light emitted by the optical engine module 200 and maps it into three-dimensional space at an extremely large angle through a nonlinear optical projection model to achieve solid angle projection imaging.

[0044] The aperture of the fisheye projection lens 300 can be matched with the aperture of the light signal output terminal; that is, the aperture F# of the fisheye projection lens 300 is consistent with the aperture F# of the optical engine module 200. For example, in this embodiment, the F# of the fisheye projection lens 300 is 2.4 to 2.5, so the illumination F# of the optical engine module 200 matches the F# of the fisheye projection lens 300. This allows for more efficient utilization of the light emitted by the light source, resulting in better brightness output.

[0045] It should be noted that this application achieves stereoscopic projection imaging within a transparent spherical screen 100 using a fisheye projection lens 300. Traditional screen projection can only display two-dimensional images and cannot achieve three-dimensional stereoscopic imaging. Therefore, this application aims to create a 3D visual display that can be applied in fields such as virtual reality, AI robots, and smart vehicles. This application differs from traditional display projection, which is a non-transparent screen projection used in scenarios such as dynamic product demonstrations and advertising projection. (Reference) Figure 3 As shown, this application can realize holographic projection, which can transparently present three-dimensional static and dynamic images, aiming to create a 3D visual display. This application can be viewed from any angle on the transparent spherical screen 100, achieving full-view coverage, and holographic projection can realize three-dimensional spatial information display, greatly enhancing the realism and immersion of the viewing experience.

[0046] For example, this application can be applied to various scenarios that require holographic image display, such as car cockpit scenes, robot scenes, and decorative ornament scenes.

[0047] In some implementations, the aperture of the fisheye projection lens 300 is matched with the aperture of the light signal output terminal.

[0048] In this embodiment, by matching the aperture of the fisheye projection lens 300 with the aperture of the light signal output terminal, the display effect of the holographic image can be improved.

[0049] The aperture of the fisheye projection lens 300 is matched with the aperture of the light signal output terminal, meaning that the aperture F# of the fisheye projection lens 300 is consistent with the aperture F# of the optical engine module 200. For example, in this embodiment, the F# of the fisheye projection lens 300 is 2.4 to 2.5, so the illumination F# of the optical engine module 200 matches the F# of the fisheye projection lens 300. This allows for more efficient utilization of the light emitted by the light source, achieving better brightness output and thus improving the display effect of the holographic image.

[0050] In some implementations, the field of view of the fisheye projection lens 300 is greater than or equal to 210°.

[0051] In this embodiment, by using a fisheye projection lens 300 with a field of view greater than or equal to 210°, the display effect of the holographic image can be improved.

[0052] The field of view (FOV) of the aforementioned fisheye projection lens 300 is greater than or equal to 210°, meaning the FOV of the fisheye projection lens 300 is ≥ 210°. (Reference) Figure 2 As shown in the figure, the fisheye projection lens 300 with a field of view (FOV) ≥ 210° can project the light emitted by the optical engine module 200 into the three-dimensional space within the transparent spherical screen 100 at an extremely large angle, achieving a wider range of stereoscopic projection imaging. In contrast, wide-angle fisheye projection lenses in related technologies are used in the field of visual imaging, and their typical field of view is less than 180°. They cannot achieve a wide range of stereoscopic projection imaging. Therefore, this embodiment uses a fisheye projection lens 300 with a field of view greater than or equal to 210°, which can improve the display range of the holographic image, thereby producing a better display effect.

[0053] It should be noted that the fisheye projection lens 300 with a field of view of ≥210° is composed of multiple lenses. By designing the structure of the lenses at different positions, the fisheye projection lens 300 with a field of view of ≥210° can be achieved. The fisheye projection lens 300 uses a nonlinear optical projection model composed of multiple lenses to bend the light emitted by the optomechanical module 200 and map it into three-dimensional space at an extremely large angle, thereby achieving a solid angle projection imaging of ≥210°.

[0054] In some embodiments, the surface of the transparent spherical dome 100 is provided with a micro-nano structured optical diffusion layer.

[0055] In this embodiment, a micro-nano structured optical diffusion layer is provided on the surface of the transparent spherical screen 100. This can improve the optical performance of the transparent spherical screen 100 and further enhance the display effect.

[0056] It should be noted that the optical diffusion layer with a micro-nano structure on the surface of the transparent spherical screen 100 in this application refers to the fabrication of a micro-nano structure layer with optical diffusion properties on the surface of the transparent spherical screen 100 using holographic optical element (HOE) technology or other similar technologies. The optical diffusion layer based on the micro-nano structure can provide a more efficient light diffusion effect while maintaining high light transmittance, thus further improving the display effect.

[0057] In some embodiments, the diffusion angle of the transparent spherical screen 100 is less than 25°; and / or, the light transmittance of the transparent spherical screen 100 is greater than 70%.

[0058] In this embodiment, a transparent spherical screen 100 with a diffusion angle of less than 25° and / or a light transmittance of greater than 70% can be used to further improve the display effect.

[0059] Specifically, the diffusion angle refers to the maximum deflection angle of the outgoing light direction relative to the incident light direction after the light passes through the diffusion layer. Transmittance refers to the ratio of the luminous flux after the light passes through the entire glass to the incident luminous flux. A transparent spherical screen 100 with a diffusion angle less than 25° and a transmittance greater than 70% can be achieved by selecting a specific transparent material or by providing a micro / nano-structured optical diffusion layer on the surface of the transparent spherical screen 100. In this embodiment, a diffusion angle less than 25° and / or a transmittance greater than 70% are achieved by providing a micro / nano-structured optical diffusion layer on the surface of the transparent spherical screen 100.

[0060] In some implementations, the feature size of the optical diffusion layer is less than 5 μm.

[0061] In this embodiment, the feature size of the optical diffusion layer is less than 5 μm. This can further improve the optical performance of the transparent spherical screen 100 and further enhance the display effect.

[0062] The characteristic size of the aforementioned optical diffusion layer refers to the smallest geometric detail size that can be formed in a micro / nano structure. This application achieves superior optical control performance by fabricating a characteristic size <5μm on the transparent spherical screen 100. Testing has shown that the transparent spherical screen 100 ensures uniform light distribution (diffusion angle <25°) while maintaining a high transmittance of >70%. This achieves distortion-free, high-contrast display effects while ensuring image brightness, thus further improving the display performance.

[0063] In some implementations, the surface roughness of the optical diffusion layer is less than 2 μm.

[0064] In this embodiment, an optical diffusion layer with a surface roughness of less than 2μm is used, which can further improve the display effect.

[0065] The surface roughness of the aforementioned optical diffusion layer refers to the irregularity of the microscopic geometry of the material surface at the micrometer (μm) and nanometer (nm) scales. The surface roughness of the optical diffusion layer is strictly controlled to within 2 μm. This application achieves excellent optical control performance by fabricating an optical diffusion layer with a surface roughness strictly controlled to within 2 μm on the transparent spherical screen 100. This results in distortion-free, high-contrast display effects while maintaining image brightness, thus further improving the display effect.

[0066] In some embodiments, the refractive index of the transparent spherical hood is greater than or equal to 1.518 and less than or equal to 1.585.

[0067] In this embodiment, a transparent spherical screen with a refractive index greater than or equal to 1.518 and less than or equal to 1.585 is used, which can improve light transmittance and further enhance the display effect.

[0068] It should be noted that the refractive index refers to the proportion by which light is slowed down relative to its speed in a vacuum when passing through a medium. It is an important physical parameter for measuring the degree to which light bends as it passes through a medium. The refractive index of glass is typically between 1.5 and 1.9. However, this application uses a transparent spherical screen with a refractive index greater than or equal to 1.518 and less than or equal to 1.585, which has high light transmittance and can improve the clarity of the holographic image, further enhancing the display effect.

[0069] For example, the aforementioned transparent spherical dome with high light transmittance and a refractive index greater than or equal to 1.518 and less than or equal to 1.585 can be made of optical-grade glass or special polymer materials.

[0070] In some implementations, the display device further includes a sensing module for acquiring user interaction information, and the sensing module is connected to the image generation unit.

[0071] In this embodiment, the sensing module is specifically used to acquire user interaction information, and the image generation unit can generate corresponding interactive image data based on the interaction information to achieve multi-directional interaction and improve user experience.

[0072] The aforementioned sensing module acquires user interaction information. This means that the sensing module can acquire user interaction information through voice, vision, touch, motion, etc. Then, the image generation unit can generate image data based on the interaction information, producing corresponding interactive feedback in the holographic image to improve the user experience.

[0073] Specifically, the sensing module can use one or more sensors such as cameras, microphones, and infrared sensing modules to acquire user interaction information.

[0074] It should be noted that since this application can achieve full-view coverage, people can interact with the holographic image and observe the feedback given by the holographic image from any angle of the transparent spherical screen 100. Therefore, the image generation unit adjusts the orientation of the holographic image on the transparent spherical screen 100 according to the interaction information, which can realize multi-directional interaction and greatly improve the user experience.

[0075] The second aspect of this application also relates to a robot, which is equipped with a display device as described in the first aspect embodiment above.

[0076] For example, the robot may be equipped with an artificial intelligence host. The artificial intelligence host transmits video / data and other information to the display device of this application for holographic display via a video communication network.

[0077] The third aspect of this application also relates to a vehicle, wherein the passenger compartment of the vehicle is provided with a display device as described in the first aspect embodiment above.

[0078] In this embodiment, the vehicle can be any new energy vehicle equipped with a charger, such as a hybrid vehicle or a pure electric vehicle. Specifically, the vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. The vehicle can also be a commercial vehicle, such as a van, bus, small truck, or large trailer.

[0079] Specifically, the vehicle's cockpit can be an intelligent cockpit. The display device of this application serves as an intelligent cockpit display for automobiles, connected to the vehicle's cockpit domain controller. It realizes a highly integrated, miniaturized, and high-projection intelligent spherical display system, and can also serve as a carrier of AI, improving the intelligent experience of users riding and driving.

[0080] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A display device, characterized by comprising: include: A transparent spherical screen (100) having a receiving cavity; Image generation unit, used to generate image data; An optical-mechanical module (200) is connected to the image generation unit. The optical-mechanical module (200) has an optical signal output terminal for converting the image data into an optical signal and outputting it by the optical signal output terminal. The optical signal output terminal is located in the accommodating cavity. A fisheye projection lens (300) is disposed at the optical signal output end of the optical engine module (200) and located in the accommodating cavity, and the field of view of the fisheye projection lens (300) is greater than or equal to 180°. The light signal output from the light signal output terminal is projected onto the transparent spherical screen (100) through the fisheye projection lens (300), forming a holographic image corresponding to the image data on the transparent spherical screen (100).

2. The display device of claim 1, wherein, The field of view of the fisheye projection lens (300) is greater than or equal to 210°.

3. The display device of claim 1, wherein, The surface of the transparent spherical hood (100) is provided with a micro-nano structured optical diffusion layer.

4. The display device according to claim 1 or 3, characterized by The diffusion angle of the transparent spherical screen (100) is less than 25°; and / or, the light transmittance of the transparent spherical screen (100) is greater than 70%.

5. The display device of claim 3, wherein, The feature size of the optical diffusion layer is less than 5 μm.

6. The display device of claim 3, wherein, The surface roughness of the optical diffusion layer is less than 2 μm.

7. The display device of claim 1, wherein, The refractive index of the transparent spherical hood (100) is greater than or equal to 1.518 and less than or equal to 1.

585.

8. The display device of claim 1, wherein, The display device further includes a sensing module for acquiring user interaction information, and the sensing module is connected to the image generation unit.

9. A robot, characterized in that The robot is equipped with a display device as described in any one of claims 1-8.

10. A vehicle characterized by comprising: The vehicle's cabin is equipped with a display device as described in any one of claims 1-8.

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