Double-head-up-display fusion imaging system and automobile

Abstract

The utility model provides a double head-up display fusion imaging system, which relates to the field of automobiles, and generates a first light beam and a second light beam carrying different projection information through an image generation unit, and adopts a diffusion element to carry out uniform light diffusion on the first light beam and the second light beam. The diffused first light beam is projected to a first position of the windshield by adopting the reflector assembly, the diffused second light beam is projected to a second position of the windshield, the light beam projected to the first position generates a diffraction effect under the action of the holographic optical element, and a close-shot image is formed in front of the windshield; the light beam projected at the second position forms a long-shot image in front of the windshield so as to display the long-shot image information carried by the second light beam. In the imaging system, only one holographic optical element and one set of optical transmission system are needed to complete display of two paths of projection information, and the system is simple in structure and smaller in size.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile, concretely relates to a double head-up display fusion imaging system and automobile. BACKGROUND

[0002] The automobile head-up display (Head Up Display, hereinafter referred to as HUD) is an advanced driving aid device, also known as the sight imaging system.In the process of continuous development and evolution of automobile head-up display technology, the pursuit of better imaging effect and more abundant information presentation is always one of the core goals.Based on the principle of geometric optics, the HUD occupies an important position in the traditional HUD application, and the holographic optical element 40 head-up display (Holographic Optical Element HUD, hereinafter referred to as HOE-HUD) exhibits great development potential by virtue of the unique advantages of holographic optical element 40.The existing technical scheme is mainly a single or double optical path HUD imaging system.

[0003] For the existing HUD imaging system, the display information of the single optical path HUD is limited, usually fixed design parameters are used, and personalized adjustment cannot be carried out according to different driver vision conditions, and the adaptability to different drivers is poor.The double optical path HUD imaging system usually adopts a combination form of double display and double optical transmission system, which increases the structural complexity and is larger in size. UTILITY MODEL CONTENT

[0004] Therefore, the utility model embodiment provides a double head-up display fusion imaging system and automobile to provide a multi-path projection system with simple structure and smaller size.

[0005] To achieve the above-mentioned purpose, the utility model embodiment provides the following technical scheme:

[0006] A double head-up display fusion imaging system comprises:

[0007] An image generation unit is used for generating a target light beam, the target light beam comprises a first light beam and a second light beam, the first light beam carries near-view image information, and the second light beam carries far-view image information;

[0008] A diffusion element comprises a near-view diffusion sub-element and a far-view diffusion sub-element, the near-view diffusion sub-element is used for diffusing and homogenizing the first light beam, and the far-view diffusion sub-element is used for diffusing and homogenizing the second light beam;

[0009] A reflector assembly is used to reflect the diffused target beam to the target positions corresponding to the windshield, wherein the target positions include a first position where the holographic optical element is located on the windshield, and a second position on the windshield;

[0010] The first beam of light, after being diffused and homogenized, undergoes a diffraction effect at a first position on the windshield, forming a near-field virtual image in front of the windshield. The second beam of light, after being reflected at a second position on the windshield, forms a far-field virtual image in front of the windshield.

[0011] Optionally, in the above dual head-up display fusion imaging system, the image generation unit is a DLP / LCOS / LBS-based image generation unit.

[0012] Optionally, in the above dual head-up display fusion imaging system, the image generation unit includes a first display area and a second display area, wherein the first display area is used to generate a first beam and the second display area is used to generate a second beam.

[0013] Optionally, in the above-mentioned dual head-up display fusion imaging system, the near-field diffusion sub-element and the far-field diffusion sub-element are either independent packaged structures or combined integral packaged structures.

[0014] Optionally, in the above dual head-up display fusion imaging system, the near-field diffusion sub-element and / or the far-field diffusion sub-element are gradient diffusion films or deflection diffusion films.

[0015] Optionally, in the above dual head-up display fusion imaging system, the reflector assembly includes at least one reflector group, which is used to reflect the target beam corresponding to the reflector group to its corresponding target position.

[0016] Optionally, in the above dual head-up display fusion imaging system, the reflector group includes a first reflector group, which includes:

[0017] A first reflector and a second reflector are arranged opposite each other to reflect the second beam to a second position.

[0018] Optionally, in the above dual head-up display fusion imaging system, the first reflector is a plane mirror or a curved mirror, and the second reflector is a curved mirror.

[0019] Optionally, in the above dual head-up display fusion imaging system, the reflector group includes a second reflector group, which includes:

[0020] A third reflecting mirror is used to reflect the first beam to a first position.

[0021] Optionally, in the above dual head-up display fusion imaging system, the third reflecting mirror is a plane mirror.

[0022] Optionally, in the above-mentioned dual head-up display fusion imaging system, the near-field image information includes vehicle status information, and the far-field image information includes non-vehicle status information.

[0023] Optionally, in the above-mentioned dual head-up display fusion imaging system, the vehicle status information includes at least one or more of the following: instrument information, vehicle speed information, fuel level information, prompt information, and alarm information.

[0024] The non-vehicle status information includes at least one or more of the following: navigation and positioning information, traffic safety warning information, smart office information, and entertainment information.

[0025] An automobile comprising the dual head-up display fusion imaging system described in any one of the preceding claims.

[0026] Based on the above technical solution, the dual-head-up display fusion imaging system provided in this embodiment generates a first beam and a second beam carrying different projection information through an image generation unit during the imaging process. Then, a diffusion element diffuses the first and second beams to their corresponding angular ranges. A reflector assembly then corrects the path of the target beam requiring path correction, ultimately projecting the first beam to a first position and the second beam to a second position. The first beam projected at the first position undergoes diffraction under the action of holographic optical elements, forming a close-up image in front of the windshield. This close-up image displays the projection information carried by the first beam. The second beam projected at the second position forms a distant image on the windshield, also displaying the projection information carried by the second beam. This dual-head-up display fusion imaging system requires only one display and one optical transmission system to display the two projection information streams, resulting in a simpler structure and smaller size. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a dual head-up display fusion imaging system provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of a dual head-up display fusion imaging system provided in another embodiment of this application. Detailed Implementation

[0030] 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.

[0031] To address the issues of complex structure and large size in dual-path HUD imaging systems, this application provides a dual-head-up display fusion imaging system. This system generates two beams carrying different projection information through an image generation unit. One beam is directly reflected through the windshield for display, while the other beam is displayed after passing through a holographic optical element. Thus, this optical path system requires only one holographic optical element and an optical transmission system, resulting in a simple structure and small size.

[0032] See Figure 1 The present application discloses a dual head-up display fusion imaging system, including: an image generation unit 10, a diffusion element 20, a mirror assembly 30, and a holographic optical element 40;

[0033] The image generation unit 10 is used to generate a target beam, which includes a first beam and a second beam. The first beam carries near-field image information, and the second beam carries far-field image information. The near-field image information and the far-field image information contain different data content. The image generation unit 10 can generate two beams carrying different projected image information through its internal optical elements and imaging technology. For example, one beam carries type A image information, and the other beam carries type B image information.

[0034] The diffusion element 20 includes a near-field diffusion sub-element 11 and a far-field diffusion sub-element 12. The near-field diffusion sub-element 11 is used to diffuse and homogenize the first beam, and the far-field diffusion sub-element 12 is used to diffuse and homogenize the second beam. In this scheme, the diffusion element 20 can diffuse and homogenize the beam emitted by the image generation unit 10 to improve the visibility and readability of the projected image.

[0035] A reflector assembly is an optical component, mainly composed of a reflector and a package. In this solution, the reflector assembly 30 is used to project the diffused target beam onto a corresponding target position. The target position includes a first position on the windshield where the holographic optical element 40 is located, and a second position on the windshield. The coordinates of the first and second positions on the windshield are different. In this solution, the reflector assembly 30 reflects the desired beam. The first beam, projected onto the first position directly or after correction by the reflector assembly, undergoes diffraction under the action of the holographic optical element 40, thus forming a near-field image. The second beam, after correction by the reflector assembly and projected onto the second position, forms a far-field image on the windshield, thereby completing the projection of both images.

[0036] Holographic optical elements (HOEs) are optical elements made based on the principles of holography, typically fabricated on photosensitive thin film materials. Their function is based on the principle of light diffraction to form projected images. In this embodiment, the holographic optical element 40 is used to diffract a first light beam to form a close-up image.

[0037] The dual head-up display (HUD) fusion imaging system disclosed in this application generates a first beam and a second beam carrying different projection information through an image generation unit 10 during the imaging process. Then, a diffusion element 20 is used to uniformly diffuse the first and second beams, and a reflector assembly 30 is used to correct the beam paths. Ultimately, the first beam is projected to a first position, and the second beam is projected to a second position. The first beam projected at the first position undergoes diffraction under the action of a holographic optical element 40, forming a close-up image in front of the windshield. This close-up image displays the projection information carried by the first beam. The second beam projected at the second position forms a distant image in front of the windshield, which also displays the projection information carried by the second beam. This dual head-up display fusion imaging system only requires one holographic optical element and one optical transmission system to display the two projection information streams, resulting in a simpler structure and smaller size.

[0038] In the technical solution disclosed in this embodiment, the type of the image generation unit 10 can be selected according to design requirements. For example, the image generation unit 10 can be any one of the image generation units based on DLP, LCOS, and LBS technologies. Digital Light Processing (DLP) technology is a projection technology based on a Digital Micromirror Device (DMD). A DMD chip is an optical microelectromechanical system capable of spatial light modulation, containing millions of tiny aluminum mirrors, each corresponding to a pixel. The number of mirrors determines the display resolution. Liquid Crystal on Silicon (LCOS) technology is a novel display technology that combines the advantages of LCD (Liquid Crystal Display) and DLP (Digital Light Processing). The image generation unit (PGU) based on Laser Beam Scanning (LBS) technology is one of the core components of a HUD (Head-Up Display) system. Of course, the above-mentioned types of image generation units are only examples in this application. When designing, users can also choose other types of image generation units according to their own design needs.

[0039] In this embodiment, to ensure that the first beam and the second beam generated by the image generation unit 10 do not interfere with or confuse each other, the image generation unit 10 may include a first display area and a second display area. The first display area is used to generate the first beam, and the second display area is used to generate the second beam. The exit angles of the beams generated by the image generation unit 10 may be different, so that the beams separate from each other after exiting, which facilitates the arrangement of the diffuser element 20 and the reflector assembly 30.

[0040] In this embodiment, the first sub-diffusing element and the second sub-diffusing element are independent packaging structures or combined integral packaging structures. When the first sub-diffusing element and the second sub-diffusing element are combined integrally packaged, the included angles between the first sub-diffusing element and the first beam, and between the second sub-diffusing element and the second beam, are matched to make the target beam clear image.

[0041] In the technical solution disclosed in this embodiment, the diffusion element 20 mainly diffuses the light beam through its internal diffusion film. The specific type of diffusion film in the diffusion element 20 can be selected according to the design requirements. It can be any diffusion film known in the existing solutions that can meet the diffusion requirements of this solution. For example, it can be a gradient diffusion film or a deflection diffusion film.

[0042] In the technical solution disclosed in this embodiment, the specific structure of the reflector assembly 30 can be arranged according to the number of beams to be intervened, the incident direction of these beams, and the target position corresponding to each beam. In this embodiment, the reflector assembly 30 may include at least one reflector group, each reflector group corresponding to a different beam, and the reflector group is used to reflect the incident beam corresponding to the reflector group to the target position corresponding to the beam.

[0043] For example, see Figure 1 The reflector assembly 30 includes a first reflector group, comprising a first reflector 31 and a second reflector 32. The first reflector 31 and the second reflector 32 are arranged opposite to each other to reflect the second light beam to its corresponding second position. When correcting the optical path of the second light beam, the positions and angles of the first reflector 31 and the second reflector 32 can be arranged according to the incident angle of the second light beam and its corresponding target position.

[0044] In this embodiment, the type of reflector in the reflector assembly 30 can be set according to the reflection requirements. The reflector can be a plane mirror or a curved mirror, for example... Figure 1 In the illustrated embodiment, the first reflector can be a plane mirror or a curved mirror, and the second reflector can be a curved mirror.

[0045] In this embodiment, the first beam, after passing through the near-field diffuser element, can be directly projected to the first position, or it can be reflected by a mirror in the reflector assembly and then projected to the first position. In this case, the reflector assembly may further include a second reflector assembly, which is used to reflect the first beam to its corresponding first position. Similarly, the number and distribution of mirrors in the second reflector assembly can be determined based on the incident angle and the first position of the first beam. For example, in... Figure 2 In the example, only a third reflecting mirror 33 is needed to reflect the first beam to the first position. The third reflecting mirror can be a plane mirror, and the reflection angle of the third reflecting mirror can be determined based on the incident angle of the first beam and the specific position of the first position.

[0046] In the technical solution disclosed in this embodiment, the projection information carried by the first beam and the second beam can be determined according to the relevant requirements. Users can independently adjust the specific content of the projection information carried by the first beam and the second beam generated by the image generation unit 10 through system control according to their own needs. For example, in this embodiment, the projection information carried by the first beam includes vehicle status information, and the information carried by the second beam includes non-vehicle status information. The vehicle status information includes at least instrument information, vehicle speed information, fuel level information, prompt information, and alarm information, or any combination of one or more of these; the non-vehicle status information includes at least navigation and positioning information, traffic safety warning information, smart office information, and entertainment information, or any combination of one or more of these.

[0047] Furthermore, this application also discloses a vehicle that can be equipped with the dual head-up display fusion imaging system described in any of the above embodiments.

[0048] As can be seen from the above solutions, the dual head-up display fusion imaging system disclosed in this application combines the advantages of HOE and HUD, precisely controlling and guiding the projection light of the HOE optical path system to achieve efficient and high-resolution imaging in a relatively small space. The combination of the two allows for flexible design of the optical path according to the vehicle's interior space and shape, optimizing the interior space layout. On the other hand, different imaging methods can ensure the stability of near-field information while enhancing the experience of far-field depth information, improving the overall display effect, and creating a superior visual experience and information interaction platform for the driver.

[0049] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0050] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply 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 limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. The present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-heads-up display fusion imaging system, characterized in that, include: An image generation unit is used to generate a target beam, the target beam including a first beam and a second beam, the first beam carrying close-up image information and the second beam carrying distant image information. A diffusion element comprising a near-field diffusion sub-element and a far-field diffusion sub-element, wherein the near-field diffusion sub-element is used to diffuse and homogenize the first beam, and the far-field diffusion sub-element is used to diffuse and homogenize the second beam. A reflector assembly is used to reflect the diffused and homogenized target beam to the target positions corresponding to the windshield, wherein the target positions include a first position where the holographic optical element is located on the windshield, and a second position on the windshield; The first beam of light, after being diffused and homogenized, undergoes a diffraction effect at the first position, forming a near-field virtual image in front of the windshield. The second beam of light, after being diffused and homogenized, is reflected at the second position, forming a far-field virtual image in front of the windshield.

2. The dual head-up display fusion imaging system according to claim 1, characterized in that, The image generation unit is a DLP / LCOS / LBS-based image generation unit.

3. The dual head-up display fusion imaging system according to any one of claims 1-2, characterized in that, The image generation unit includes a first display area and a second display area, wherein the first display area is used to generate a first light beam and the second display area is used to generate a second light beam.

4. The dual head-up display fusion imaging system according to any one of claims 1-2, characterized in that, The near-field diffuser sub-element and the far-field diffuser sub-element are either independent packaging structures or combined integral packaging structures.

5. The dual head-up display fusion imaging system according to any one of claims 1-2, characterized in that, The reflector assembly includes at least one reflector group, which is used to reflect the target beam corresponding to the reflector group to its corresponding target position.

6. The dual head-up display fusion imaging system according to claim 5, characterized in that, The reflector group includes a first reflector group, the first reflector group comprising: A first reflector and a second reflector are arranged opposite each other to reflect the second beam to a second position.

7. The dual head-up display fusion imaging system according to claim 6, characterized in that, The first reflecting mirror is a plane mirror or a curved mirror, and the second reflecting mirror is a curved mirror.

8. The dual head-up display fusion imaging system according to claim 5, characterized in that, The mirror assembly includes a second mirror assembly, the second mirror assembly comprising: A third reflecting mirror is used to reflect the first beam to a first position.

9. The dual head-up display fusion imaging system according to any one of claims 1-2, characterized in that, The close-up image information includes vehicle status information, and the distant image information includes non-vehicle status information. The vehicle status information includes at least one or more of the following: instrument information, vehicle speed information, fuel level information, prompt information, and alarm information. The non-vehicle status information includes at least one or more of the following: navigation and positioning information, traffic safety warning information, smart office information, and entertainment information.

10. A car, characterized in that, Includes the dual head-up display fusion imaging system as described in any one of claims 1-9.

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