Head-up display and vehicle

Abstract

The embodiment of the utility model provides a head-up display and a vehicle. The head-up display comprises an image generator, a display screen, an adjusting module and a reflection assembly. The image generator comprises a projection lens, the projection lens is used for projecting image information to the display screen, and the display screen is used for emitting light with the image information to the reflection assembly; the adjusting module is configured to change the real image position of the display screen at least by adjusting the setting position of the display screen; the reflection assembly reflects light with image information to a front windshield of a vehicle based on the real image position of the display screen, so that virtual images with different virtual image distances are formed through the front windshield.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and more specifically, to a head-up display and a vehicle. Background Art

[0002] A head-up display (HUD), also known as a head-up display, uses optical mirror reflection to project important driving information such as speed and navigation information onto an imaging board or windshield in front of the driver. This allows the driver to see these important information without looking down or turning their head, effectively improving driving safety.

[0003] Traditional HUD systems are limited to a single, fixed-position image source, and therefore can only generate virtual images located at a fixed distance. They are unable to adjust the focal position of the virtual image based on the driver's line of sight or driving road conditions.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of this application is to provide a new technology solution for heads-up display and vehicle.

[0006] In a first aspect, the present application provides a heads-up display (HUD). The HUD comprises an image generator, a display screen, an adjustment module, and a reflective assembly. The image generator includes a projection lens configured to project image information onto the display screen, and the display screen is configured to emit light carrying the image information toward the reflective assembly. The adjustment module is configured to change the position of a real image presented by the display screen by at least adjusting the position of the display screen. The reflective assembly reflects the light carrying the image information toward a vehicle's front windshield based on the position of the real image presented by the display screen, thereby forming virtual images of varying virtual image distances through the windshield.

[0007] Optionally, the display screen and the projection lens are respectively connected to the adjustment module, and the position of the real image presented by the display screen is changed by adjusting the positions of the display screen and the projection lens.

[0008] Optionally, the display screen and the projection lens move in the same direction to adjust the positions of the display screen and the projection lens; or the display screen and the projection lens move in different directions to adjust the positions of the display screen and the projection lens.

[0009] Optionally, the adjustment module includes a screw rod, which includes a rod body and a first thread structure and a second thread structure provided on the rod body, the first thread structure is connected to the display screen, and the second thread structure is connected to the projection lens.

[0010] Optionally, the thread rotation direction of the first thread structure is different from the thread rotation direction of the second thread structure.

[0011] Optionally, the pitch of the first thread structure is different from the pitch of the second thread structure.

[0012] Optionally, the adjustment module further includes a first connecting component, one end of which is connected to the first threaded structure, and the other end of which is connected to the display screen;

[0013] The adjustment module further includes a second connecting component, one end of which is connected to the second threaded structure, and the other end of which is connected to the projection lens.

[0014] Optionally, the image generator further includes an illumination module and a display chip, wherein the illumination module is used to guide light to the display chip; and the display chip is used to generate the image to be projected.

[0015] Optionally, the reflective assembly includes a first reflector and a second reflector; the light emitted from the display screen passes through the first reflector and the second reflector in sequence and is projected onto the front windshield of the vehicle to form a virtual image.

[0016] In a second aspect, an embodiment of the present application further provides a vehicle, wherein the vehicle includes the head-up display as described in the first aspect.

[0017] According to an embodiment of the present application, the setting position of the display screen is changed by adjusting the module, thereby changing the position of the real image presented by the display screen. Based on the position of the real image presented by the display screen, the reflective component reflects the light carrying image information to the front windshield of the vehicle. The front windshield presents virtual images with different virtual image distances, thereby improving the actual display effect.

[0018] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0020] Figure 1 Shown is a schematic diagram of the head-up display structure provided in an embodiment of the present application.

[0021] Figure 2 Shown is a schematic structural diagram of the focusing screw provided in an embodiment of the present application.

[0022] Description of reference numerals:

[0023] 1. Image generator; 10. Lighting module; 11. Display chip; 12. Projection lens;

[0024] 2. Display screen;

[0025] 3. Adjustment module; 31. Screw; 311. Rod body; 312. First thread structure; 313. Second thread structure; 32. First connecting member; 33. Second connecting member;

[0026] 4. Reflection assembly; 41. First reflector; 42. Second reflector;

[0027] 5. Front windshield. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0030] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0031] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0032] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] An embodiment of the present application provides a head-up display. The head-up display device may be an AR-HUD. The head-up display device may be installed in the cockpit of a vehicle.

[0034] Reference Figure 1 The head-up display device includes an image generator 1, a display screen 2, an adjustment module 3 and a reflection component 4.

[0035] The image generator 1 includes a projection lens 12 for projecting image information onto the display screen 2. The display screen 2 is configured to emit light carrying the image information toward the reflective assembly 4. The adjustment module 3 is configured to change the position of the real image presented by the display screen 2 by at least adjusting the position of the display screen 2. The reflective assembly 4 reflects the light carrying the image information toward the vehicle's front windshield 5 based on the position of the real image presented by the display screen 2, thereby forming virtual images of different virtual image distances on the front windshield 5.

[0036] In the embodiment of the present application, the head-up display generates image information via an image generator 1 and projects it onto a display screen 2 via a projection lens 12. An adjustment module 3 is used to adjust the position of the display screen 2 to adjust the position of the real image presented by the display screen 2. Specifically, this is achieved by adjusting the distance between the display screen 2 and the reflective component 4 to adjust the distance between the real image presented by the display screen 2 and the reflective component 4. After adjustment by the adjustment module 3, the light emitted from the display screen 2 forms a real image at a specific location. The reflective component 4 then reflects the light onto the vehicle's front windshield 5 based on the position of the real image, forming a virtual image on the front windshield 5.

[0037] Specifically, the head-up display includes an adjustment module 3, which adjusts at least the position of the display screen 2. Exemplarily, while reducing the clarity, resolution, and other parameters of the real image presented by the display screen 2 and the virtual image presented by the HUD, the adjustment module 3 can be used to change only the position of the display screen 2, thereby changing the position of the real image presented by the display screen 2. Exemplarily, the adjustment module 3 can also be used to change both the position of the display screen 2 and the position of the projection lens 12, thereby achieving the purpose of changing the position of the real image presented by the display screen 2 while maintaining the clarity, resolution, and other parameters of the real image presented by the display screen 2.

[0038] For example, by adjusting the module 3, the display screen 2 is driven closer to or away from the reflective component 4. According to the imaging law, when the display screen 2 is close to the reflective component 4, the virtual image presented on the front windshield 5 is closer to the driver (the virtual image distance is shorter); when the display screen 2 is away from the reflective component 4, the virtual image presented on the front windshield 5 is farther away from the driver (the virtual image distance is longer), so that the driver can adjust the distance of the virtual image presented on the front windshield 5 according to his or her driving habits and driving road conditions to ensure the actual display effect.

[0039] Therefore, in this embodiment, the setting position of the display screen 2 is changed by adjusting the module 3, thereby changing the position of the real image presented by the display screen 2. Based on the position of the real image presented by the display screen 2, the reflection component 4 reflects the light carrying image information to the front windshield 5 of the vehicle. The front windshield 5 presents virtual images with different virtual image distances, thereby improving the actual display effect.

[0040] In one embodiment, referring to Figure 1 The display screen 2 and the projection lens 12 are respectively connected to the adjustment module 3. By adjusting the positions of the display screen 2 and the projection lens 12, the position of the real image presented by the display screen 2 can be changed.

[0041] In this embodiment, when the adjustment module 3 adjusts the position of the display screen 2 to change the position of the real image presented by the display screen 2, the position of the projection lens 12 is also adjusted by the adjustment module 3, that is, the relative distance between the display screen 2 and the projection lens 12 is changed to optimize the clarity of the presented image.

[0042] Specifically, by adjusting the setting of the projection lens 12 through the adjustment module 3, the back focal length of the projection lens 12 is also adjusted. By adjusting the back focal length, it is possible to ensure that the light forms a clear focus on the display screen 2, thereby improving the clarity of the real image and the clarity of the subsequent virtual image.

[0043] In one embodiment, the display screen 2 and the projection lens 12 move in the same direction to adjust the positions of the display screen 2 and the projection lens 12; or the display screen 2 and the projection lens 12 move in different directions to adjust the positions of the display screen 2 and the projection lens 12.

[0044] In this embodiment, the display screen 2 is positioned by adjusting the adjustment module 3, so that the display screen 2 moves closer to (or further away from) the reflective assembly 4. To ensure the clarity of the real image presented by the display screen 2, the projection lens 12 is adjusted by adjusting the adjustment module 3, so that the projection lens 12 moves closer to or further away from the display screen 2, thereby ensuring that light forms a clear focus on the display screen 2 and improving the clarity of the real image.

[0045] For example, the adjustment module 3 can adjust the display screen 2 and the projection lens 12 to move in the same direction (both move toward the reflective component 4, or both move away from the reflective component 4), thereby ensuring the clarity of the real image presented by the display screen 2 while changing the position of the real image presented by the display screen 2.

[0046] For example, the display screen 2 can adjust the relative movement of the display screen 2 and the projection lens 12, or move them back to back, thereby changing the position of the real image presented by the display screen 2 while ensuring the clarity of the real image presented by the display screen 2.

[0047] In a specific embodiment, referring to Figure 1 and Figure 2The adjustment module 3 includes a screw 31, and the screw 31 includes a rod body 311 and a first thread structure 312 and a second thread structure 313 provided on the rod body 311. The first thread structure 312 is connected to the display screen 2, and the second thread structure 313 is connected to the projection lens 12.

[0048] In this embodiment, when the positions of the display screen 2 and the projection lens 12 need to be adjusted, this can be achieved by rotating the screw 31. Since the positions of the first thread structure 312 and the second thread structure 313 on the rod body 311 are fixed, rotating the screw 31 will simultaneously change the positions of the display screen 2 and the projection lens 12.

[0049] Exemplarily, the first threaded structure 312 is directly or indirectly connected to the display screen 2. For example, when the first threaded structure 312 is directly connected to the display screen 2, the first threaded structure 312 is directly connected to a fixing component or mounting bracket of the display screen 2; when the first threaded structure 312 is indirectly connected to the display screen 2, the connection is achieved through some intermediate component or mechanism (such as a connecting rod, a slider, etc.).

[0050] Exemplarily, the second threaded structure 313 is directly or indirectly connected to the projection lens 12. For example, when the second threaded structure 313 is directly connected to the projection lens 12, the first threaded structure 312 is directly connected to a fixed component or mounting bracket of the projection lens 12; when the second threaded structure 313 is directly connected to the projection lens 12, the connection is achieved through some intermediate component or mechanism (such as a connecting rod, a slider, etc.).

[0051] For example, the screw rod 31 can be rotated manually, or can be rotated by a motor, for example, a stepping motor.

[0052] It should be noted that the structure of the adjustment module 3 can be but is not limited to a screw 31. For example, the positions of the display screen 2 and the projection lens 12 can also be adjusted by a system such as two electric cylinders or two motors.

[0053] In a further embodiment, referring to Figure 2 The thread rotation direction of the first thread structure 312 is different from the thread rotation direction of the second thread structure 313.

[0054] In this embodiment, the thread rotation direction refers to the direction of rotation of the thread on the rod body 311, which is generally divided into left-hand and right-hand. In the HUD adjustment module 3, the first thread structure 312 and the second thread structure 313 respectively connect the display screen 2 and the projection lens 12. The different first and second thread rotation directions mean that when the screw rod 31 rotates, the display screen 2 and the projection lens 12 will move in opposite directions.

[0055] Because the first and second threaded structures 312 and 313 have different thread directions, when the screw 31 rotates, the display screen 2 and the projection lens 12 move in opposite directions (toward or away from each other). The adjustment module 3 can flexibly adjust the relative position between the display screen 2 and the projection lens 12 to adapt to different driving conditions and driver needs.

[0056] Specifically, under the action of adjustment module 3, display screen 2 moves away from reflective assembly 4, reflecting light from reflective assembly 4 onto front windshield 5, forming a virtual image with a long virtual image distance. To ensure the clarity of the real image presented by display screen 2, projection lens 12 moves closer to display screen 2. This movement compensates for the optical changes caused by the movement of display screen 2, ensuring that projection lens 12 can accurately focus on display screen 2, thereby maintaining the clarity of the virtual image.

[0057] Under the adjustment of adjustment module 3, display screen 2 moves closer to reflective assembly 4, reflecting light from reflective assembly 4 onto front windshield 5, forming a virtual image with a relatively close virtual image distance. To ensure the clarity of the real image presented by display screen 2, projection lens 12 moves away from display screen 2. This movement compensates for the optical changes caused by the movement of display screen 2, ensuring that projection lens 12 can accurately focus on display screen 2, thereby maintaining the clarity of the virtual image.

[0058] In a further embodiment, the pitch of the first thread structure 312 is different from the pitch of the second thread structure 313 .

[0059] The pitch is the axial distance between two corresponding points on the mid-diameter line of two adjacent teeth on the thread. The pitch determines the distance the connected parts move axially when the thread rotates one circle.

[0060] In the HUD adjustment module 3, the first threaded structure 312 and the second threaded structure 313 connect the display screen 2 and the projection lens 12, respectively. The display screen 2 and the projection lens 12 are moved by rotating the screw 31. When the pitches of the first and second threaded structures 312 and 313 are different (the screw 31 has a fixed transmission ratio), the display screen 2 and the projection lens 12 will move different distances when the screw 31 rotates the same angle. This allows the display screen 2 to be positioned relative to the reflective assembly 4, and the projection lens 12 to be adjusted to ensure image clarity on the display screen 2.

[0061] In addition, the different pitches allow the display screen 2 and the projection lens 12 to be independently adjusted to different degrees when the screw 31 rotates. That is, the display screen 2 and the projection lens 12 can be adjusted in non-proportional manner, thereby more accurately controlling the position and clarity of the virtual image.

[0062] In a specific embodiment, referring to Figure 1 The adjustment module 3 also includes a first connecting component 32, one end of the first connecting component 32 is connected to the first threaded structure 312, and the other end is connected to the display screen 2; the adjustment module 3 also includes a second connecting component 33, one end of the second connecting component 33 is connected to the second threaded structure 313, and the other end is connected to the projection lens 12.

[0063] In this embodiment, when the virtual image distance or clarity of the HUD virtual image needs to be adjusted, the screw 31 begins to rotate. Due to the different pitches of the first and second threaded structures 312, 313, the first and second connecting members 32, 33 move at different speeds. This differential movement drives the display screen 2 and projection lens 12, respectively, thereby adjusting the HUD display effect.

[0064] For example, one end of the first connecting member 32 and the second connecting member 33 connected to the screw rod 31 may be provided with a threaded interface, a snap connection structure, or a pin connection structure.

[0065] In a specific embodiment, referring to Figure 1 The image generator 1 further includes an illumination module 10 and a display chip 11. The illumination module 10 is used to guide light to the display chip 11; the display chip 11 is used to generate an image to be projected.

[0066] In this embodiment, the image generator 1 includes an illumination module 10 , a display chip 11 and a projection lens 12 .

[0067] The illumination module 10 is the light source component of the image generator 1, responsible for providing light of sufficient brightness and color range to illuminate the display chip 11 and generate an image. For example, the illumination module 10 may include one or more light sources (e.g., LEDs, lasers, etc.) and a series of optical components (e.g., lenses, reflectors, light guide plates, etc.) to shape, focus, and guide the light, ensuring that it is evenly illuminated on the display chip 11.

[0068] The display chip 11 is the image generating portion of the image generator 1. The display chip 11 generates the image to be projected using the light from the illumination module 10. For example, the display chip 11 may be a DLP (digital light processing), LCD (liquid crystal display), LCOS (liquid crystal on silicon), or OLED (organic light emitting diode).

[0069] The projection lens 12 is the output part of the image generator 1 , and is responsible for magnifying the image generated on the display chip 11 and projecting the image onto the display screen 2 .

[0070] In a specific embodiment, referring to Figure 1 The reflecting assembly 4 includes a first reflecting mirror 41 and a second reflecting mirror 42. The light emitted by the display screen 2 passes through the first reflecting mirror 41 and the second reflecting mirror 42 in sequence and is projected onto the front windshield 5 of the vehicle to form a virtual image.

[0071] In this embodiment, the adjustment module 3 adjusts at least the setting position of the display screen 2 to change the distance between the real image presented by the display screen 2 and the first reflector 41 . For example, the real image presented by the display screen 2 may be closer to the first reflector 41 or farther away from the first reflector 41 .

[0072] When the real image presented by the display screen 2 approaches the first reflector 41, the path of the reflected light becomes shorter, bringing the virtual image closer to the driver's eyes and increasing in size. When the real image presented by the display screen 2 moves away from the first reflector 41, the path of the reflected light becomes longer, and the virtual image moves backward and decreases accordingly. This allows the head-up display to present virtual images at different virtual image distances.

[0073] Exemplarily, the first reflecting mirror 41 may be a curved mirror.

[0074] Exemplarily, the second reflecting mirror 42 may be a curved mirror.

[0075] In a second aspect, embodiments of the present application further provide a vehicle. The vehicle includes a head-up display as described above. The vehicle may be an electric, hybrid, or other vehicle having a cockpit. The head-up display is installed in the cockpit.

[0076] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0077] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above examples may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A head-up display, characterized in that: The head-up display comprises: an image generator (1), a display screen (2), an adjustment module (3) and a reflection component (4); The image generator (1) includes a projection lens (12), the projection lens (12) is used to project image information onto the display screen (2), and the display screen (2) is used to emit light with image information toward the reflective component (4); The adjustment module (3) is configured to change the position of the real image presented by the display screen (2) by at least adjusting the setting position of the display screen (2); The reflection component (4) reflects light with image information to the front windshield (5) of the vehicle based on the real image position presented by the display screen (2), so as to form virtual images with different virtual image distances through the front windshield (5).

2. The head-up display according to claim 1, wherein: The display screen (2) and the projection lens (12) are respectively connected to the adjustment module (3), and the position of the real image presented by the display screen (2) is changed by adjusting the positions of the display screen (2) and the projection lens (12).

3. The head-up display according to claim 2, wherein: The display screen (2) and the projection lens (12) move in the same direction to adjust the positions of the display screen (2) and the projection lens (12); or the display screen (2) and the projection lens (12) move in different directions to adjust the positions of the display screen (2) and the projection lens (12).

4. The head-up display according to claim 1, wherein: The adjustment module (3) comprises a screw (31), the screw (31) comprising a rod body (311) and a first threaded structure (312) and a second threaded structure (313) provided on the rod body (311), the first threaded structure (312) being connected to the display screen (2), and the second threaded structure (313) being connected to the projection lens (12).

5. The head-up display according to claim 4, characterized in that The thread rotation direction of the first thread structure (312) is different from the thread rotation direction of the second thread structure (313).

6. The head-up display according to claim 4, characterized in that The pitch of the first thread structure (312) is different from the pitch of the second thread structure (313).

7. The head-up display according to claim 4, characterized in that The adjustment module (3) further comprises a first connecting component (32), one end of the first connecting component (32) being connected to the first threaded structure (312), and the other end being connected to the display screen (2); The adjustment module (3) further comprises a second connecting component (33), one end of the second connecting component (33) being connected to the second threaded structure (313), and the other end being connected to the projection lens (12).

8. The head-up display according to claim 1, wherein: The image generator (1) further comprises an illumination module (10) and a display chip (11); the illumination module (10) is used to guide light to the display chip (11); and the display chip (11) is used to generate an image to be projected.

9. The head-up display according to claim 1, wherein: The reflection assembly (4) comprises a first reflector (41) and a second reflector (42); light emitted from the display screen (2) passes through the first reflector (41) and the second reflector (42) in sequence and is projected onto the front windshield (5) of the vehicle to form a virtual image.

10. A vehicle, characterized in that: The vehicle comprises a head-up display according to any one of claims 1-9.

Images