3D imaging head-up display system
By introducing optical elements such as microlens arrays and beam guiding components into the HUD system, 3D images can be formed directly on the windshield, solving the problem that traditional HUD systems cannot achieve true 3D display and improving the richness and realism of information display.
Patent Information
- Application Number
- CN202423311405.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Traditional HUD systems cannot achieve true 3D display effects. They rely on software algorithms to process 2D images to achieve pseudo-3D, which lacks realism and richness.
By employing optical elements such as microlens arrays, beam guiding components, and diffusion films, a 3D image is formed inside the windshield through optical path design. The microlens array converts the beam emitted by the image source into a 3D image, and combined with a reflector and diffusion film, a virtual image is formed directly on the windshield.
It enables the generation of realistic 3D images without the need for software algorithms, enhancing the richness of information display and its similarity to reality, thus improving the realism effect.
Smart Images
Figure CN223941175U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical technology, and in particular to a 3D imaging head-up display system. Background Technology
[0002] Head-up display (HUD) systems are a type of airborne and in-vehicle instrumentation device with augmented reality capabilities. They project driving parameters, navigation information, and other data into the driver's field of vision using an optical system, displaying images and characters. This allows the driver to observe the driving environment while simultaneously receiving various information from the aircraft or vehicle. With the rapid development of the automotive industry, the demand for intelligent driving, audio-visual entertainment, and driving safety is increasing. As an important component of the intelligent cockpit, the HUD not only plays the role of a traditional instrument panel but also fulfills responsibilities such as safe driving, intelligent driving, and audio-visual entertainment. The display of HUDs is increasingly emphasizing 3D integration with reality.
[0003] Traditional head-up display (HUD) systems are mostly based on freeform surface optical projection systems. The projected images are 2D images generated by an image generation unit and controlled by software. The 2D images are then processed by software and algorithms to achieve pseudo-3D, where objects appear larger when closer and smaller when farther away. This does not achieve a true 3D display effect. Utility Model Content
[0004] To overcome the existing technical problems, this utility model proposes a 3D imaging head-up display system, the specific technical solution of which is as follows:
[0005] A 3D imaging head-up display system includes an image source, a microlens array, a beam guiding component, and a windshield. The microlens array is located between the image source and the beam guiding component, and the beam guiding component is located inside the windshield. The image source emits a first beam that records 3D object information. The first beam enters the microlens array, and the microlens array converts the first beam into a beam that records a 3D image of the object. The first beam travels from the microlens array to the beam guiding component, and the beam guiding component guides the first beam to be projected onto the windshield. The first beam is reflected by the windshield and enters the human eye.
[0006] Furthermore, the 3D imaging head-up display system also includes a diffusion film located between the microlens array and the beam guiding component.
[0007] Furthermore, the image source, the microlens array, and the diffusion film are all located inside the windshield.
[0008] Furthermore, the image source, the microlens array, and the diffusion film are located below the beam guiding assembly.
[0009] Furthermore, the microlens array and the diffusion film are arranged at an angle, and the microlens array and the diffusion film are arranged in parallel.
[0010] Furthermore, the beam guiding assembly includes a first reflector and a second reflector, wherein the first beam is reflected by the first reflector and directed toward the second reflector, and the first beam is reflected by the second reflector and directed toward the windshield.
[0011] Furthermore, the first reflector and the second reflector are tilted.
[0012] Furthermore, the first reflector faces downwards from the windshield, and the second reflector faces the first reflector.
[0013] Furthermore, the reflective surfaces of the first reflector and the second reflector are arranged facing each other.
[0014] Furthermore, the first reflector and the second reflector are any one of freeform surface reflectors, plane reflectors, spherical reflectors, and aspherical reflectors.
[0015] The advantages of this invention are as follows: through the microlens array, the first beam of light emitted by the image source to record 3D object information is converted into a beam of light 11 to record the 3D image of the object. After reflection by the windshield, the 3D image of the object enters the human eye to form a virtual image. There is no need to process the 2D image through software algorithms to achieve pseudo-3D, which greatly improves the richness of the displayed information, makes it closer to the real object, and achieves the effect of augmented reality. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a 3D imaging head-up display system according to the present invention;
[0017] Figure 2 for Figure 1 A magnified view of a portion of point A in the 3D imaging head-up display system.
[0018] In the figure: 1. Image source; 11. First beam; 2. Microlens array; 3. Diffuser film; 4. Beam guiding component; 41. First reflector; 42. Second reflector; 5. Windshield. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] The following is combined with Figure 1-2 Further explanation of the utility model:
[0021] A 3D imaging head-up display system includes an image source 1, a microlens array 2, a diffusion film 3, a beam guiding component 4, and a windshield 5.
[0022] Image source 1 is used to emit a first beam 11 for recording information about 3D objects.
[0023] The microlens array 2 is located between the image source 1 and the diffusion film 3, and the beam guiding component 4 is located between the diffusion film 3 and the windshield 5. The image source 1 emits a first beam 11 to the microlens array 2, and the microlens array 2 converts the first beam 11 into a beam that records the 3D image of the object. The first beam 11 is directed toward the diffusion film 3, and the diffusion film 3 diffuses the first beam 11 to meet the requirements of the beam guiding component 4. The first beam 11 is guided by the beam guiding component 4 and projected onto the windshield 5. The windshield 5 reflects the first beam 11 so that it enters the human eye and forms a virtual image.
[0024] Specifically, in this embodiment, the image source 1, the microlens array 2, the diffusion film 3, and the beam guiding component 4 are located inside the windshield 5, and the microlens array 2 and the diffusion film 3 are arranged in parallel and at an angle.
[0025] In this embodiment, the beam guiding component 4 includes a first reflector 41 and a second reflector 42. A first beam 11 is directed toward the first reflector 41, and the first reflector 41 reflects the first beam 11 to the second reflector 42. The second reflector 42 reflects the first beam 11 to the windshield 5. The first reflector 41 and the second reflector 42 are any one of a freeform surface reflector, a plane reflector, a spherical reflector, or an aspherical reflector. Specifically, the first reflector 41 and the second reflector 42 are inclined, with the first reflector 41 facing downwards from the windshield 5 and the second reflector 42 facing the first reflector 41. The reflecting surfaces of the first reflector 41 and the second reflector 42 are arranged facing each other.
[0026] In another embodiment, the beam guiding component 4 is an optical waveguide module, the first beam 11 is received by the optical waveguide module, and the optical waveguide module transmits the first beam 11 to the windshield 5.
[0027] In another embodiment, a holographic optical structure is used, in which the first beam 11 is reflected multiple times and directed toward the windshield 5.
[0028] The working principle of this utility model of a 3D imaging head-up display system is as follows: Image source 1 pre-records an image of the object information formed by the conversion of the object's 3D image by microlens array 2. When the 3D imaging head-up display system is working, image source 1 emits a first beam 11 for recording 3D object information into microlens array 2. The first beam 11 is converted into a beam for recording the object's 3D image by microlens array 2. The first beam 11 passes through diffuser 3, which expands or deflects the first beam 11 to meet the needs of beam guiding component 4. The first beam 11 is guided by beam guiding component 4 to windshield 5, and the first beam 11 is projected onto the human eye by windshield 5, allowing the person to observe the 3D image.
[0029] The advantages of this invention are as follows: by using the microlens array 2, the first beam 11 emitted by the image source 1 to record 3D object information is converted into a beam to record the 3D image of the object. After being reflected by the windshield 5, the 3D image of the object enters the human eye and forms a virtual image in front of the car. There is no need to process the 2D image through software algorithms to achieve pseudo-3D, which greatly improves the richness of the displayed information, makes it closer to the real object, and achieves the effect of augmented reality.
[0030] The above embodiments only illustrate one implementation of the present utility model, and should not be construed as limiting the scope of the utility model patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of the present utility model, and all of these fall within the protection scope of the present utility model.
Claims
1. A 3D imaging head-up display system, characterized in that: The device includes an image source, a microlens array, a beam guiding component, and a windshield. The microlens array is located between the image source and the beam guiding component, and the beam guiding component is located inside the windshield. The image source emits a first beam that records 3D object information. The first beam enters the microlens array, which converts the first beam into a beam that records a 3D image of the object. The first beam travels from the microlens array to the beam guiding component, which guides the first beam to be projected onto the windshield. The first beam is then reflected by the windshield and enters the human eye.
2. The 3D imaging head-up display system according to claim 1, characterized in that: The 3D imaging head-up display system also includes a diffusion film located between the microlens array and the beam guiding component.
3. The 3D imaging head-up display system according to claim 2, characterized in that: The image source, the microlens array, and the diffusion film are all located inside the windshield.
4. The 3D imaging head-up display system according to claim 3, characterized in that: The image source, the microlens array, and the diffusion film are located below the beam guiding assembly.
5. The 3D imaging head-up display system according to claim 3, characterized in that: The microlens array and the diffusion film are arranged in parallel and at an angle.
6. The 3D imaging head-up display system according to claim 1, characterized in that: The beam guiding assembly includes a first reflector and a second reflector. The first beam is reflected by the first reflector and directed towards the second reflector, and the first beam is reflected by the second reflector and directed towards the windshield.
7. The 3D imaging head-up display system according to claim 6, characterized in that: The first and second reflectors are tilted.
8. The 3D imaging head-up display system according to claim 6, characterized in that: The first reflector faces downwards from the windshield, and the second reflector faces the first reflector.
9. The 3D imaging head-up display system according to claim 8, characterized in that: The reflecting surfaces of the first and second reflectors are arranged facing each other.
10. The 3D imaging head-up display system according to claim 6, characterized in that: The first reflector and the second reflector are any one of freeform surface reflectors, plane reflectors, spherical reflectors, and aspherical reflectors.