Head-up display system and vehicle

Abstract

The utility model provides a head-up display system and a vehicle, and relates to the technical field of head-up display. The head-up display system comprises an image source assembly used for emitting light; the reflection assembly is used for reflecting the light rays and enabling the light rays to be emitted to the imaging assembly and reflected to form a virtual image; the wedge-shaped glued glass is arranged between the image source assembly and the reflection assembly and is used for refracting light; the wedge-shaped glued glass comprises first wedge-shaped glass and second wedge-shaped glass, the light-in face, facing the image source assembly, of the wedge-shaped glued glass is located on the first wedge-shaped glass, and the light-out face, deviating from the image source assembly, of the wedge-shaped glued glass is located on the second wedge-shaped glass. The gluing face of the first wedge-shaped glass and the second wedge-shaped glass is located between the light-in face and the light-out face. The head-up display system can improve the contrast ratio, the brightness and the definition degree of a virtual image display picture, is small in size, and does not introduce chromatic aberration.

Description

Technical Field

[0001] This application relates to the field of head-up display technology, and more specifically, to a head-up display system and a vehicle. Background Technology

[0002] A head-up display (HUD) is a driver-centric, blind-operated, multi-functional instrument panel that projects important driving information such as speed and navigation onto the windshield in front of the driver, allowing them to see this information without looking down or turning their head. To enhance the driver experience, HUDs employ an oblique projection imaging system to provide a more natural visual experience and reduce visual distractions. By projecting a beam of light at an angle onto the windshield, the displayed information appears more natural, as if the information is floating right in front of the driver's eyes, rather than appearing as if looking at a screen. This design reduces the driver's visual burden and improves driving safety.

[0003] Existing oblique projection imaging systems primarily achieve this by increasing the tilt angle of the image source. To obtain a virtual image with a larger tilt angle (angle with the vertical plane), the tilt angle of the image source is often very large, with the angle between the emitted light from the image source and the normal to the display screen often exceeding 30°. This results in a decrease in the contrast, brightness, and sharpness of the virtual image. To reduce the angle between the emitted light from the image source and the normal to the display screen without significantly increasing the size of the HUD, existing technologies add optical compensation mirrors to the optical path. These mirrors refract light, reducing the angle between the emitted light from the image source and the normal to the display screen. However, the addition of these optical compensation mirrors introduces chromatic aberration, leading to image distortion. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of the prior art by providing a head-up display device and system that can improve the contrast, brightness, and clarity of the virtual image display, while being small in size and not introducing color difference.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] One aspect of this application provides a head-up display system, including: an image source component for emitting light; a reflective component for reflecting light and causing the light to exit to an imaging component and reflect to form a virtual image; at least one wedge-shaped laminated glass, disposed between the image source component and the reflective component, for refracting light; the wedge-shaped laminated glass includes a first wedge-shaped glass and a second wedge-shaped glass, the light-incident surface of the wedge-shaped laminated glass facing the image source component is located on the first wedge-shaped glass, the light-exiting surface of the wedge-shaped laminated glass away from the image source component is located on the second wedge-shaped glass, and the bonding surface of the first wedge-shaped glass and the second wedge-shaped glass is located between the light-incident surface and the light-exiting surface.

[0007] Optionally, wedge-shaped laminated glass is used to refract part of the light.

[0008] Optionally, the wedge-shaped laminated glass can be movably positioned on a plane perpendicular to the light.

[0009] Optionally, the refraction angle of the second wedge glass is greater than or equal to 10°.

[0010] Optionally, the second wedge glass is a low-dispersion wedge glass.

[0011] Optionally, the first wedge glass has a refractive index of 1.75 to 2.2 and an Abbe number of less than 35; the second wedge glass has a refractive index of 1.4 to 1.7 and an Abbe number of greater than 55.

[0012] Optionally, the reflective assembly includes at least one freeform reflective glass.

[0013] Optionally, the reflective assembly includes a first reflective assembly and a second reflective assembly. The reflective surface of the first reflective assembly is disposed opposite to the display screen of the image source assembly and is used to reflect light. The reflective surface of the second reflective assembly is disposed opposite to the reflective surface of the first reflective assembly and is used to reflect the light reflected by the first reflective assembly. The wedge-shaped laminated glass is located between the image source assembly and the first reflective assembly.

[0014] Optionally, the first reflective component includes a first reflective glass, and the second reflective component includes a second reflective glass. The first reflective glass is a freeform reflective glass or a flat glass, and the second reflective glass is a freeform reflective glass.

[0015] In another aspect of the embodiments of this application, a vehicle is provided, including: a vehicle body and a head-up display system as described above, the head-up display system being used to project images onto the windshield of the vehicle body.

[0016] The beneficial effects of this application include:

[0017] This application provides a head-up display system, including: an image source component for emitting light; a reflective component for reflecting light and causing it to exit to an imaging component and reflect to form a virtual image; and at least one wedge-shaped laminated glass, disposed between the image source component and the reflective component, for refracting light. The wedge-shaped laminated glass includes a first wedge-shaped glass and a second wedge-shaped glass, with the light-incident surface of the wedge-shaped laminated glass facing the image source component located on the first wedge-shaped glass, and the light-exiting surface of the wedge-shaped laminated glass facing away from the image source component located on the second wedge-shaped glass. The bonding surface between the first wedge-shaped glass and the second wedge-shaped glass is located between the light-incident surface and the light-exiting surface. The above-described head-up display system incorporates a wedge-shaped laminated glass between the image source component and the reflective component. The wedge-shaped laminated glass is formed by bonding the first wedge-shaped glass and the second wedge-shaped glass together. The second wedge-shaped glass is used to reduce the angle between the light emitted by the image source component and the normal of the display screen of the image source component, and the first wedge-shaped glass is used to compensate for the chromatic aberration introduced by the second wedge-shaped glass. Therefore, a virtual image with a larger tilt angle (angle with the vertical plane) can be obtained at a smaller angle, improving the contrast, brightness, clarity, and realism of the virtual image display, thus providing a better driving experience for the driver. The added wedge-shaped laminated glass does not increase or significantly increase the size of the head-up display system; therefore, the aforementioned head-up display system also has the advantages of small size, light weight, and simple structure, making it adaptable to more types of vehicles and applicable to a wider range of situations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of the head-up display system provided in the embodiments of this application;

[0020] Figure 2 This is a partial structural diagram of the head-up display system provided in an embodiment of this application;

[0021] Figure 3 This is a second schematic diagram of the structure of the head-up display system provided in the embodiments of this application.

[0022] Icons: 10-Heads-up Display System; 11-Image Source Component; 12-Reflector Component; 121-First Reflector Component; 122-Second Reflector Component; 13-Wedge-shaped Cemented Glass; 131-First Wedge-shaped Glass; 132-Second Wedge-shaped Glass; 133-Incident Surface; 134-Emitting Surface; 135-Cemented Surface; 20-Light Ray; 30-Imaging Component; 40-Virtual Image; 50-Eye Box; α-Angle between the light ray emitted by the image source component and the normal to the display screen of the image source component; β-Angle of Refraction; P-Plane perpendicular to the light ray. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Regarding one aspect of the embodiments of this application, please refer to Figure 1 A head-up display system 10 is provided, comprising: an image source component 11, a reflective component 12, and at least one wedge-shaped laminated glass 13, wherein the at least one wedge-shaped laminated glass 13 is disposed between the image source component 11 and the reflective component 12. The image source component 11 emits light 20 towards the reflective component 12, and the light 20 is refracted by the wedge-shaped laminated glass 13 before being incident on the reflective component 12. The reflective component 12 reflects the light 20 and directs it to an imaging component 30 (typically the windshield of a vehicle). The light 20 is ultimately reflected by the imaging component 30 to form a virtual image 40, which the driver can view at the eye-box 50 position.

[0029] Please refer to the reference. Figure 2 The wedge-shaped laminated glass 13 includes a first wedge-shaped glass 131 and a second wedge-shaped glass 132. The light-incident surface 133 of the wedge-shaped laminated glass 13 facing the image source assembly 11 is located on the first wedge-shaped glass 131, and the light-exit surface 134 of the wedge-shaped laminated glass 13 facing away from the image source assembly 11 is located on the second wedge-shaped glass 132. The angle between the light-incident surface 133 and the light-exit surface 134 is less than 90°. The bonding surface 135 of the first wedge-shaped glass 131 and the second wedge-shaped glass 132 is located between the light-incident surface 133 and the light-exit surface 134. The second wedge-shaped glass 132 is used to reduce the angle α between the light emitted by the image source assembly and the normal of the display screen of the image source assembly, thereby improving the contrast, brightness, and clarity of the virtual image 40. By adjusting the refraction angle β of the second wedge-shaped glass 132, the angle α between the light emitted by the image source assembly and the normal of the display screen of the image source assembly can be adjusted, resulting in a tilted image plane with higher imaging quality. The first wedge glass 131 is used to compensate for the color difference introduced by the second wedge glass 132, thereby avoiding distortion of the image displayed by the virtual image 40.

[0030] The light 20 emitted by the image source component 11 enters the first wedge glass 131 through the light incident surface 133, passes through the first wedge glass 131 and is directed to the second wedge glass 132, and is then refracted by the second wedge glass 132 before leaving the light exit surface 134 and heading towards the reflector component 12.

[0031] It should be noted that when there is only one wedge-shaped laminated glass 13, the light-incident surface 133 of the wedge-shaped laminated glass 13 can completely cover the display screen of the image source assembly 11, so that all the light 20 emitted by the image source assembly 11 is refracted by the wedge-shaped laminated glass 13; please refer to the reference. Figure 3 The light-incident surface 133 of a wedge-shaped laminated glass 13 can also partially cover the display screen of the image source component 11. At this time, part of the light 20 emitted by the image source component 11 is refracted by the wedge-shaped laminated glass 13 and finally projected to form a first virtual image 40. The other part of the light 20 is not refracted by the wedge-shaped laminated glass 13 and directly shines on the reflective component 12, finally projected to form a second virtual image 40. That is, two virtual images 40 with different distances are finally presented on the imaging component 30, realizing the imaging effect of dual image planes.

[0032] When there are two or more wedge-shaped laminated glass pieces 13, the two or more wedge-shaped laminated glass pieces 13 are arranged side by side between the image source assembly 11 and the reflection assembly 12. In this case, each wedge-shaped laminated glass piece 13 only partially covers the display screen of the image source assembly 11. By setting the refraction angle β of the second wedge-shaped glass piece 13 in different wedge-shaped laminated glass pieces 13, a dual-image-plane or multi-image-plane imaging effect can be achieved.

[0033] The head-up display system 10 incorporates a wedge-shaped laminated glass 13 between the image source component 11 and the reflective component 12. The wedge-shaped laminated glass 13 is formed by bonding a first wedge-shaped glass 131 and a second wedge-shaped glass 132. The second wedge-shaped glass 132 reduces the angle α between the light emitted from the image source component and the normal to the display screen of the image source component, while the first wedge-shaped glass 131 compensates for the chromatic aberration introduced by the second wedge-shaped glass 132. Therefore, a virtual image 40 with a larger tilt angle (angle with the vertical plane) can be obtained at a smaller angle, improving the contrast, brightness, clarity, and realism of the displayed image 40, thus providing a better driving experience for the driver. The added wedge-shaped laminated glass 13 does not increase or significantly increase the size of the head-up display system 10. Therefore, the head-up display system 10 also has the advantages of small size, light weight, and simple structure, making it adaptable to more types of vehicles and applicable to a wider range of situations.

[0034] Alternatively, please refer to Figure 3 The wedge-shaped laminated glass 13 is used to refract part of the light 20.

[0035] In other words, the light-incident surface 133 of the wedge-shaped laminated glass 13 partially covers the display screen of the image source assembly 11 to achieve dual-image or multi-image imaging effects while reducing color difference.

[0036] Alternatively, please refer to Figure 1 and Figure 2The wedge-shaped laminated glass 13 is movably set on a plane P perpendicular to the light source so as to obtain different virtual image 40 display screens without changing the image source component 11.

[0037] Optionally, both the first wedge glass 131 and the second wedge glass 132 are triangular. The triangular wedge glass is thinner, which makes it easier to change the exit angle of the light 20. At the same time, it can also make the size of the wedge cemented prism smaller, avoiding an increase or significant increase in the size of the head-up display system 10.

[0038] Optionally, the refraction angle β of the second wedge glass 132 is greater than or equal to 10°.

[0039] At this point, the angle α between the light emitted by the image source component and the normal of the display screen of the image source component can be reduced to less than 17°, which can ensure contrast and image quality while obtaining a larger tilted image plane. This refraction angle β, combined with the first wedge glass 131, can further reduce chromatic aberration and improve image quality.

[0040] Optionally, the second wedge glass 132 is a low-dispersion wedge glass. In this way, the chromatic aberration it introduces can be minimized, and when combined with the first wedge glass 131, a more realistic virtual image 40 can be displayed.

[0041] Optionally, the first wedge glass 131 has a refractive index of 1.75 to 2.2 and an Abbe number of less than 35; the second wedge glass 132 has a refractive index of 1.4 to 1.7 and an Abbe number of greater than 55.

[0042] With the parameters of the first wedge glass 131 and the second wedge glass 132 within the above range, the chromatic difference introduced by the second wedge glass 132 can be minimized as much as possible, thereby ensuring image quality.

[0043] Optionally, the reflective assembly 12 includes at least one freeform reflective glass.

[0044] The freeform reflective glass is used to reflect light 20 and direct it toward the imaging component 30. The freeform reflective glass participates in the actual imaging process and can correct aberrations, thereby improving the imaging quality.

[0045] Alternatively, please refer to Figure 3 The reflective component 12 includes a first reflective component 121 and a second reflective component 122. The reflective surface of the first reflective component 121 is disposed opposite to the display screen of the image source component 11 and is used to reflect light 20. The reflective surface of the second reflective component 122 is disposed opposite to the reflective surface of the first reflective component 121 and is used to reflect the light 20 reflected by the first reflective component 121. The wedge-shaped laminated glass 13 is located between the image source component 11 and the first reflective component 121.

[0046] The light 20 emitted from the display screen of the image source component 11 is refracted by the wedge-shaped laminated glass 13, and then reflected by the first reflection component 121, the second reflection component 122 and the imaging component 30 in sequence, and finally forms a virtual image 40 on the surface of the virtual image 40.

[0047] Optionally, the first reflective component 121 includes a first reflective glass, and the second reflective component 122 includes a second reflective glass. The first reflective glass is a freeform reflective glass or a flat glass, and the second reflective glass is a freeform reflective glass.

[0048] This embodiment also provides a vehicle, including: a vehicle body and a head-up display system 10 as described above, the head-up display system 10 being used to project images onto the windshield of the vehicle body.

[0049] This vehicle incorporates the same structure and beneficial effects as the head-up display system 10 in the foregoing embodiments. The structure and beneficial effects of the head-up display system 10 have been described in detail in the foregoing embodiments and will not be repeated here.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A head-up display system, characterized in that, include: An image source component is used to emit light; a reflection component is used to reflect the light and cause the light to be emitted to the imaging component and reflected to form a virtual image; At least one wedge-shaped laminated glass is disposed between the image source assembly and the reflective assembly to refract the light; The wedge-shaped laminated glass includes a first wedge-shaped glass and a second wedge-shaped glass. The light-incident surface of the wedge-shaped laminated glass facing the image source assembly is located on the first wedge-shaped glass, and the light-exiting surface of the wedge-shaped laminated glass away from the image source assembly is located on the second wedge-shaped glass. The bonding surface of the first wedge-shaped glass and the second wedge-shaped glass is located between the light-incident surface and the light-exiting surface.

2. The head-up display system as described in claim 1, characterized in that, The wedge-shaped laminated glass is used to refract part of the light.

3. The head-up display system as described in claim 1, characterized in that, The wedge-shaped laminated glass is movably positioned on a plane perpendicular to the light rays.

4. The head-up display system as described in claim 1, characterized in that, The refraction angle of the second wedge-shaped glass is greater than or equal to 10°.

5. The head-up display system as described in claim 1, characterized in that, The second wedge-shaped glass is a low-dispersion wedge-shaped glass.

6. The head-up display system as described in claim 1, characterized in that, The first wedge-shaped glass has a refractive index of 1.75 to 2.2 and an Abbe number of less than 35; the second wedge-shaped glass has a refractive index of 1.4 to 1.7 and an Abbe number of greater than 55.

7. The head-up display system as described in any one of claims 1 to 6, characterized in that, The reflective assembly includes at least one freeform reflective glass.

8. The head-up display system as described in any one of claims 1 to 6, characterized in that, The reflective assembly includes a first reflective assembly and a second reflective assembly. The reflective surface of the first reflective assembly is disposed opposite to the display screen of the image source assembly and is used to reflect the light. The reflective surface of the second reflective assembly is disposed opposite to the reflective surface of the first reflective assembly and is used to reflect the light reflected by the first reflective assembly. The wedge-shaped laminated glass is located between the image source assembly and the first reflective assembly.

9. The head-up display system as described in claim 8, characterized in that, The first reflective component includes a first reflective glass, and the second reflective component includes a second reflective glass. The first reflective glass is a freeform reflective glass or a flat glass, and the second reflective glass is a freeform reflective glass.

10. A means of transportation, characterized in that, include: The vehicle body and the head-up display system as described in any one of claims 1 to 9, the head-up display system being used to project images onto the windshield of the vehicle body.

Images