Head-up display device and vehicle

Abstract

The present invention discloses a head-up display device and a vehicle. The head-up display device includes: at least one first image source for emitting incident light; a first reflective assembly, wherein the reflective surface of the first reflective assembly is disposed opposite the emitting surface of the first image source and is configured to reflect the incident light emitted by the first image source; a second reflective assembly, wherein the reflective surface of the second reflective assembly is disposed opposite the reflective surface of the first reflective assembly and is configured to reflect the incident light reflected by the first reflective assembly; and an imaging assembly, wherein the incident light emitted by the first image source reflected by the second reflective assembly forms a tilted virtual image on the imaging assembly, wherein the tilted virtual image is tilted at an angle to the horizontal plane. The present invention can reduce binocular parallax when a user observes a HUD image, thereby alleviating visual fatigue, dizziness, and other sensations experienced by the user.

Description

Technical Field

[0001] The present invention relates to the field of vehicle-mounted HUD technology, and in particular to a head-up display device, a head-up display system, and a vehicle. Background Art

[0002] The intelligent development of automotive cockpits is driven by three key components: in-vehicle and out-of-vehicle environmental perception, multimodal human-computer interaction solutions such as vision and hearing, and the Internet of Vehicles (IoV) that integrates perception and computing. As a crucial component of this HCI solution, the head-up display (HUD) system is a crucial component for future vehicle intelligence, connectivity, and human-computer interaction. Based on the imaging method and form factor of the HUD system, it can be broadly categorized as the first-generation C-HUD combination, the second-generation W-HUD windshield, and the third-generation AR-HUD augmented reality. Currently, W-HUD is the mainstream application in the market, with C-HUD gradually being phased out. AR-HUD is already developing into a future upgrade trend.

[0003] Compared to W-HUD, AR-HUD offers advantages such as a wider field of view and longer virtual image distance. However, due to the human eye's convergence and accommodation conflicts and binocular parallax, the fixed virtual image distance currently used by AR-HUDs results in excessive binocular parallax when displaying certain information. This prevents the virtual image from integrating well with the real scene, impacting the user experience.

[0004] Therefore, there is a need for a head-up display device that can reduce the binocular parallax of users when observing HUD images, so that the virtual image and the real scene can be better integrated, and the user's visual fatigue, dizziness and other feelings can be reduced. Summary of the Invention

[0005] To address the technical problem that the fixed virtual image distance used in existing AR-HUDs causes excessive binocular parallax when the HUD displays information, the present invention provides a head-up display device and a vehicle. The specific technical solutions are as follows:

[0006] The present invention provides a head-up display device, comprising:

[0007] at least one first image source for emitting incident light;

[0008] a first reflective component, wherein a reflective surface of the first reflective component is arranged opposite to the emitting surface of the first image source and is used to reflect the incident light emitted by the first image source;

[0009] a second reflective component, wherein a reflective surface of the second reflective component is arranged opposite to the reflective surface of the first reflective component and is used to reflect the incident light reflected by the first reflective component;

[0010] An imaging component is provided on which the incident light emitted by the first image source and reflected by the second reflecting component forms a tilted virtual image, and an tilt angle exists between the tilted virtual image and the horizontal plane.

[0011] The head-up display device provided by the present invention tilts the virtual image originally perpendicular to the horizontal plane by a certain angle to form a tilted virtual image during the setting process of AR-HUD, so that the tilted virtual image has a continuously changing virtual image distance. The binocular parallax generated when the user observes the AR-HUD imaging screen enables the displayed information to be better integrated with the real scene.

[0012] In some embodiments, the tilt angle is calculated based on the field of view angle, the downward viewing angle, the minimum target virtual image distance and the maximum target virtual image distance of the tilted virtual image, and the calculation formula is as follows:

[0013] ;

[0014] The field of view angle is γxβ, the lower viewing angle LDA is δ, the tilt angle is α, the maximum target virtual image distance is VIDa, and the minimum target virtual image distance is VIDb.

[0015] The head-up display device provided by the present invention discloses a method for determining the inclination angle between a tilted virtual image and a horizontal plane, which facilitates setting relevant parameters during the setting process of AR-HUD according to the correspondence between the field of view angle, downward viewing angle, minimum target virtual image distance of the tilted virtual image, maximum target virtual image distance and the inclination angle.

[0016] In some embodiments, the head-up display device provided by the present invention further includes:

[0017] at least one second image source, configured to emit incident light, wherein a plurality of the second image sources and a plurality of the first image sources do not overlap with each other;

[0018] After the incident light emitted by the plurality of second image sources passes through the first reflecting component and the second reflecting component in sequence, a conventional virtual image is formed on the imaging component, and the conventional virtual image is perpendicular to the horizontal plane.

[0019] In some embodiments, the head-up display device includes one first image source and two second image sources, which form one tilted virtual image and two regular virtual images on the imaging component after being reflected by the first reflective component and the second reflective component;

[0020] The one tilted virtual image and the two conventional virtual images have different lower viewing angles and viewing angles;

[0021] The target virtual image distances of the two conventional virtual images are respectively equal to the minimum target virtual image distance and the maximum target virtual image distance of the tilted virtual image.

[0022] The head-up display device provided by the present invention discloses a technical solution of a tilted virtual image and two conventional virtual images. The distance of the virtual images changes continuously, so that the virtual image and the real scene are better integrated to enhance the user experience, and can also allow the user to visually reduce visual fatigue and dizziness.

[0023] In some embodiments, the head-up display device includes a first image source and a second image source, which form a tilted virtual image and a normal virtual image on the imaging component after being reflected by the first reflective component and the second reflective component;

[0024] The target virtual image distance, the lower viewing angle and the field angle of the oblique virtual image and the normal virtual image are all different.

[0025] In some embodiments, the head-up display device includes a first image source and a second image source, which form a tilted virtual image and a normal virtual image on the imaging component after being reflected by the first reflective component and the second reflective component;

[0026] The oblique virtual image and the regular virtual image have different lower viewing angles and different field angles;

[0027] A target virtual image distance of the normal virtual image is equal to a minimum target virtual image distance or a maximum target virtual image distance of the oblique virtual image.

[0028] In some embodiments, the head-up display device includes one first image source and two second image sources, which form one tilted virtual image and two regular virtual images on the imaging component after being reflected by the first reflective component and the second reflective component;

[0029] The target virtual image distance, the lower viewing angle and the field angle of the one inclined virtual image and the two normal virtual images are all different.

[0030] In some embodiments, the tilt angle is between 3° and 10°;

[0031] The upper virtual image distance of the tilted virtual image is greater than the lower virtual image distance of the tilted virtual image;

[0032] The upper virtual image distance and the lower virtual image distance of the inclined virtual image are both between 8m and 40m.

[0033] In some embodiments, according to another aspect of the present invention, the present invention further provides a vehicle, comprising a head-up display device disclosed in the above embodiment.

[0034] The head-up display device and vehicle provided by the present invention have at least one of the following technical effects:

[0035] (1) During the AR-HUD setting process, the virtual image originally perpendicular to the horizontal plane is tilted at a certain angle to form a tilted virtual image, so that the tilted virtual image has a continuously changing virtual image distance. The binocular parallax generated when the user observes the AR-HUD imaging screen enables the displayed information to be better integrated with the real scene;

[0036] (2) Disclose a method for determining the tilt angle between the tilted virtual image and the horizontal plane, so as to facilitate setting relevant parameters during the AR-HUD setting process according to the corresponding relationship between the field of view angle, the downward viewing angle, the minimum target virtual image distance of the tilted virtual image, the maximum target virtual image distance and the tilt angle;

[0037] (3) A technical solution for a tilted virtual image and two regular virtual images is disclosed. The distance between the virtual images changes continuously, so that the virtual image and the real scene are better integrated to enhance the user experience. It can also reduce visual fatigue and dizziness for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 This is an example diagram of a head-up display device according to the present invention;

[0040] Figure 2 A schematic diagram showing the effect of a user observing the tilted virtual image provided by the present invention while driving a vehicle;

[0041] Figure 3 This is an example diagram of the tilt angle in a head-up display device of the present invention;

[0042] Figure 4 This is an example diagram of a lower viewing angle of a head-up display device according to the present invention;

[0043] Figure 5 This is an example diagram of a head-up display device including a first image source A1 and two second image sources A2 according to the present invention;

[0044] Figure 6 This is another exemplary diagram of a head-up display device including a first image source A1 and two second image sources A2 according to the present invention;

[0045] Figure 7 This is an example diagram of a head-up display device including a first image source A1 and a second image source A2 according to the present invention;

[0046] Figure 8 Another example of a head-up display device including a first image source A1 and a second image source A2 according to the present invention is shown in FIG.

[0047] Labels in the figure: first image source-A1, second image source-A2, first reflection component-B, second reflection component-C and imaging component-D. DETAILED DESCRIPTION

[0048] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obstructing the description of the present application with unnecessary details.

[0049] It will be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections.

[0050] To simplify the drawings, only the parts relevant to the present invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. As used herein, "one" refers not only to "only one" but also to "more than one."

[0051] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0052] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive work.

[0054] One embodiment of the present invention, as Figure 1 and Figure 2As shown, the present invention provides a head-up display device, including at least one first image source A1, a first reflection component B, a second reflection component C and an imaging component D.

[0055] The first image source A1 is used to emit image light (hereinafter referred to as incident light). The reflective surface of the first reflective component B is arranged opposite to the emitting surface of the first image source A1, and is used to reflect the incident light emitted by the first image source A1. The reflective surface of the second reflective component C is arranged opposite to the reflective surface of the first reflective component B, and is used to reflect the incident light reflected by the first reflective component B. The incident light emitted by the first image source A1 reflected by the second reflective component C forms an inclined virtual image on the imaging component D. There is an inclination angle between the inclined virtual image and the horizontal plane, wherein the horizontal plane is the plane of the ground on which the vehicle is traveling when the head-up display device is applied to the vehicle.

[0056] Figure 2 This is a schematic diagram of the effect of a user observing a tilted virtual image while driving a vehicle. During driving, the road surface appears tilted from far to near in the user's field of view. When traditional AR-HUD displays a regular virtual image, the tilted image cannot be well integrated with the regular virtual image, resulting in excessive binocular parallax. The technical solution provided by this application is as follows: Figure 2 As shown, the AR-HUD imaging can be closely integrated with the actual road image by tilting the virtual image, thereby improving the user's driving experience.

[0057] The head-up display device provided in this embodiment tilts the virtual image originally perpendicular to the horizontal plane by a certain angle to form a tilted virtual image during the AR-HUD setting process, so that the tilted virtual image has a continuously changing virtual image distance. The binocular parallax generated when the user observes the AR-HUD imaging screen enables the displayed information to be better integrated with the real scene.

[0058] In one embodiment, Figure 3 and Figure 4 As shown, Figure 3 This is an example diagram of the tilt angle in the head-up display device. Figure 4 This is an example diagram of the downward viewing angle. The tilt angle is calculated based on the field of view angle, downward viewing angle, minimum target virtual image distance and maximum target virtual image distance of the tilted virtual image. The calculation formula is as follows:

[0059] ;

[0060] The field of view is γxβ°, the LDA is δ°, the look down angle (LDA) is the angle between the line connecting the center eye point and the center of the virtual image and the horizontal plane, the angle between the virtual image and the horizontal plane is α°, and the maximum target virtual image distance is VID a , the minimum target virtual image distance is VID b .

[0061] The head-up display device provided by the present invention discloses a method for determining the inclination angle between a tilted virtual image and a horizontal plane, which facilitates setting relevant parameters during the setting process of AR-HUD according to the correspondence between the field of view angle, downward viewing angle, minimum target virtual image distance of the tilted virtual image, maximum target virtual image distance and the inclination angle.

[0062] In one embodiment, the tilt angle is between 3° and 10°, the upper virtual image distance of the tilted virtual image is greater than the lower virtual image distance of the tilted virtual image, and the upper virtual image distance and the lower virtual image distance of the tilted virtual image are both between 8m and 40m.

[0063] In one embodiment, the head-up display device provided by the present invention further includes at least one second image source A2, which is used to emit incident light. The second image source A2 and the first image source A1 do not overlap with each other. The incident light emitted by the second image source A2 passes through the first reflection component B and the second reflection component C in sequence, and forms a regular virtual image on the imaging component D. There is no inclination angle between the regular virtual image and the horizontal plane.

[0064] In some embodiments, the plurality of second image sources A2 and the plurality of first image sources A1 are not parallel to each other, and the inclination angle between the first image source A1 and the horizontal plane is greater than the inclination angle between the second image source A2 and the horizontal plane.

[0065] In some embodiments, as Figure 5 As shown, the head-up display device includes a first image source A1 and two second image sources A2. After reflection by the first reflective component B and the second reflective component C, an inclined virtual image and two regular virtual images are formed on the imaging component D. The target virtual image distance, downward viewing angle and field angle of the one inclined virtual image and the two regular virtual images are different.

[0066] Continue to refer Figure 5 , a first image source A1 and two second image sources A2 are respectively arranged to not overlap with each other, and the first image source A1 and the two second image sources A2 can be placed parallel or non-parallel. If they are not placed parallel, the inclination angle between the first image source A1 and the horizontal plane is greater than the inclination angle between the two second image sources A2 and the horizontal plane. The three first reflection components B can be set as plane mirrors. The three first reflection components B are placed according to the specific positions of the first image source A1 and the two second image sources A2, and can be parallel or non-parallel to each other and do not overlap with each other. The first reflection component B reflects the light emitted by the first image source A1 and the two second image sources A2 to the second reflection component C, and the second reflection component C can be set as a curved reflector.

[0067] The reflection light path between the first reflection component B and the second reflection component C is as follows: Figure 5As shown in , the tilt angle of the tilted virtual image is 3° to 10°, the lower virtual image distance of the tilted virtual image is small, the upper virtual image distance is large, the target virtual image distance is between 8 and 40 meters, the maximum target virtual image distance of the conventional virtual image is smaller than the minimum target virtual image distance of the tilted virtual image, and the three virtual images display different contents separately.

[0068] In one embodiment, Figure 6 As shown, the head-up display device includes a first image source A1 and two second image sources A2. After reflection by the first reflective component B and the second reflective component C, an inclined virtual image and two regular virtual images are formed on the imaging component D. The downward viewing angle and the field angle of the inclined virtual image and the two regular virtual images are different. The target virtual image distances of the two regular virtual images are respectively equal to the minimum target virtual image distance and the maximum target virtual image distance of the inclined virtual image. The inclined virtual image and the two regular virtual images constitute a continuous virtual image. That is, the virtual image distances between the tilted virtual image and the two regular virtual images are continuously changing, so that the tilted virtual image and the real scene are better integrated to enhance the user experience. Moreover, since the regular virtual image and the tilted virtual image are used for different display contents respectively, when the user is watching the picture content composed of the continuous virtual image composed of the regular virtual image and the tilted virtual image, since the virtual image distances between the tilted virtual image and the regular virtual image are continuous, when the user's visual focus switches between different tilted virtual images and the regular virtual image, the user's visual effect will not change suddenly, which can reduce the visual fatigue and dizziness caused by the virtual image content viewed by the user switching between discontinuous virtual image distances, thereby further enhancing the user experience.

[0069] In one embodiment, Figure 7 As shown, the head-up display device includes a first image source A1 and a second image source A2. After reflection by the first reflective component B and the second reflective component C, an inclined virtual image and a regular virtual image are formed on the imaging component D. The target virtual image distance, downward viewing angle and field angle of the inclined virtual image and the regular virtual image are different.

[0070] In one embodiment, Figure 7 As shown, the head-up display device includes a first image source A1 and a second image source A2. After being reflected by the first reflective component B and the second reflective component C, a tilted virtual image and a regular virtual image are formed on the imaging component D. The tilted virtual image and the regular virtual image have different downward viewing angles and field angles. The target virtual image distance of the regular virtual image is equal to the minimum target virtual image distance or the maximum target virtual image distance of the tilted virtual image. The tilted virtual image and the regular virtual image constitute a continuous virtual image. Figure 7The figure only shows an example where the virtual image distance of a regular virtual image and the minimum target virtual image distance of a tilted virtual image are equal. This means that the virtual image distances of the tilted virtual image and the regular virtual image vary continuously, allowing the tilted virtual image to better integrate with the real scene and enhance the user experience. Furthermore, because the regular virtual image and the tilted virtual image are used for different display contents, when a user views a continuous virtual image composed of regular and tilted virtual images, the visual fatigue and dizziness caused by switching between discontinuous virtual image distances can be reduced, further enhancing the user experience.

[0071] In one embodiment, according to another aspect of the present invention, a vehicle is provided, comprising a head-up display device as disclosed in any of the above embodiments. The vehicle provided in the embodiments of the present application may include, but is not limited to, a land vehicle such as a vehicle, an air vehicle such as an aircraft (or also known as an aircraft), or a water or underwater vehicle.

[0072] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0073] Those skilled in the art will appreciate that the units and steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0074] In the embodiments provided herein, it should be understood that the disclosed head-up display device and vehicle can be implemented in other ways. For example, the above-described head-up display device and vehicle embodiment is merely illustrative. For example, the division of modules or units is merely a logical functional division, and actual implementation may employ other division methods. For example, multiple units or modules may be combined or integrated into another system, or some features may be omitted or not implemented. Furthermore, the communication connections shown or discussed may be through interfaces, communication connections between devices or units, or integrated circuits, and may be electrical, mechanical, or other forms.

[0075] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0076] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0077] It should be noted that the above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A head-up display device, characterized in that: include: at least one first image source for emitting incident light; a first reflective component, wherein a reflective surface of the first reflective component is arranged opposite to the emitting surface of the first image source and is used to reflect the incident light emitted by the first image source; a second reflective component, wherein a reflective surface of the second reflective component is arranged opposite to the reflective surface of the first reflective component and is used to reflect the incident light reflected by the first reflective component; an imaging component, on which the incident light emitted by the first image source reflected by the second reflecting component forms a tilted virtual image, and there is an inclination angle between the tilted virtual image and a horizontal plane; The tilt angle is calculated based on the field of view angle, the downward viewing angle, the minimum target virtual image distance and the maximum target virtual image distance of the tilted virtual image, and the calculation formula is as follows: ； Among them, the field of view angle is γxβ, the lower viewing angle is LDA is δ, the tilt angle is α, and the maximum target virtual image distance is , the minimum target virtual image distance is .

2. A head-up display device according to claim 1, characterized in that: Also includes: at least one second image source, configured to emit incident light, wherein a plurality of the second image sources and a plurality of the first image sources do not overlap with each other; After the incident light emitted by the plurality of second image sources passes through the first reflecting component and the second reflecting component in sequence, a conventional virtual image is formed on the imaging component, and the conventional virtual image is perpendicular to the horizontal plane.

3. A head-up display device according to claim 2, characterized in that: The head-up display device includes one first image source and two second image sources, which form one tilted virtual image and two normal virtual images on the imaging component after being reflected by the first reflecting component and the second reflecting component; The one tilted virtual image and the two conventional virtual images have different lower viewing angles and viewing angles; The target virtual image distances of the two conventional virtual images are respectively equal to the minimum target virtual image distance and the maximum target virtual image distance of the tilted virtual image.

4. The head-up display device according to claim 2, characterized in that: The head-up display device includes one first image source and two second image sources, which form one tilted virtual image and two normal virtual images on the imaging component after being reflected by the first reflecting component and the second reflecting component; The target virtual image distance, the lower viewing angle and the field angle of the one inclined virtual image and the two normal virtual images are all different.

5. The head-up display device according to claim 2, characterized in that: The head-up display device includes a first image source and a second image source, which form a tilted virtual image and a normal virtual image on the imaging component after being reflected by the first reflective component and the second reflective component; The target virtual image distance, the lower viewing angle and the field angle of the oblique virtual image and the normal virtual image are all different.

6. The head-up display device according to claim 2, characterized in that: The head-up display device includes a first image source and a second image source, which form a tilted virtual image and a normal virtual image on the imaging component after being reflected by the first reflective component and the second reflective component; The oblique virtual image and the regular virtual image have different lower viewing angles and different field angles; A target virtual image distance of the normal virtual image is equal to a minimum target virtual image distance or a maximum target virtual image distance of the oblique virtual image.

7. The head-up display device according to claim 6, characterized in that: The plurality of second image sources and the plurality of first image sources are not parallel to each other; The inclination angle between the first image source and the horizontal plane is greater than the inclination angle between the second image source and the horizontal plane.

8. A head-up display device according to any one of claims 1, 3 to 7, characterized in that: The inclination angle is between 3° and 10°; The upper virtual image distance of the tilted virtual image is greater than the lower virtual image distance of the tilted virtual image; The upper virtual image distance and the lower virtual image distance of the inclined virtual image are both between 8m and 40m.

9. A vehicle, characterized in that: A head-up display device comprising any one of claims 1 to 8.

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