Head-up display system and vehicle

Abstract

The utility model discloses a kind of head-up display systems and vehicles, belong to optical equipment technical field.In which, head-up display system includes: image source, optical path adjustment component and windshield, image source is used to output the imaging light with image carrying;Optical path adjustment component includes at least one reflector, at least one reflector is configured to be able to receive and reflect imaging light;Windshield is configured to be able to reflect imaging light to eyebox;In which, image source, optical path adjustment component and windshield are sequentially arranged to form transmission light path, imaging light is transmitted along transmission light path;Head-up display system further includes phase delay wave sheet, phase delay wave sheet is configured to be able to move into or move out transmission light path, and can change the polarization state of imaging light when moving into transmission light path.The utility model improves the display effect of head-up display system, ensures the clear visibility of display image, can also adapt to different driving environment and driver state, and can always provide high-quality visual display effect.

Description

Technical Field

[0001] This utility model relates to the field of optical equipment technology, and in particular to a head-up display system and a vehicle. Background Technology

[0002] In related technologies, the imaging unit of a head-up display (HUD) generates an imaging beam with a linear polarization state when it operates. When the imaging beam is reflected by the windshield and reaches the driver's eye box, the main polarization component of the imaging light changes, becoming predominantly vertically polarized light. Therefore, when the driver wears polarized sunglasses, the polarized lenses filter sunlight while also suppressing vertically polarized light from the HUD, resulting in a blurry and dim HUD image seen by the driver through the polarized lenses. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a head-up display system that can adapt to different driving environments and driver states, and consistently provide a high-quality visual display effect.

[0004] This utility model also proposes a vehicle that includes the above-mentioned head-up display system.

[0005] A head-up display system according to a first aspect of the present invention includes: an image source, an optical path adjustment component, and a windshield. The image source is used to output imaging light carrying an image. The optical path adjustment component includes at least one reflector, which is configured to receive and reflect the imaging light. The windshield is configured to reflect the imaging light to an eyepiece. The image source, the optical path adjustment component, and the windshield are arranged sequentially to form a transmission optical path, and the imaging light is transmitted along the transmission optical path. The head-up display system further includes a phase delay plate, which is configured to move into or out of the transmission optical path and to change the polarization state of the imaging light when it moves into the transmission optical path.

[0006] The head-up display system according to the embodiments of the present utility model has at least the following beneficial effects:

[0007] The head-up display system of this embodiment is equipped with a phase delay plate, which can move into or out of the transmission optical path formed by the image source, the optical path adjustment component, and the windshield. When the phase delay plate moves into the transmission optical path, it can change the polarization state of the imaging light, thereby enabling the head-up display system to adjust the polarization state of the imaging light as needed. This ensures that the driver can clearly see the image content in various situations, which not only improves the display effect of the head-up display system and ensures the clear visibility of the displayed image, but also enhances the versatility of the head-up display system, enabling it to adapt to different driving environments and driver states, and always provide a high-quality visual display effect, thereby improving the driver's driving experience and driving safety.

[0008] According to some embodiments of the present invention, the phase delay waveplate is constructed as a half-waveplate, and when the half-waveplate is moved into the transmission optical path, the half-waveplate is located between the windshield and the eye box.

[0009] According to some embodiments of the present invention, the head-up display system further includes a platform, the platform being provided with a mounting groove, and the half-wave plate being rotatably connected to the platform;

[0010] The half-wave plate has a first state and a second state. When the half-wave plate is in the first state, the half-wave plate rotates into the mounting groove and the light-transmitting surface of the half-wave plate is separated from the transmission optical path.

[0011] When the half-wave plate is in the second state, the half-wave plate rotates and moves into the transmission optical path so that the light-transmitting surface of the half-wave plate is perpendicular to the transmission optical path.

[0012] According to some embodiments of the present invention, the side wall of the mounting groove is provided with two positioning holes arranged opposite to each other, and the two sides of the half-wave plate are respectively provided with protrusions, and the two protrusions are correspondingly inserted into the two positioning holes.

[0013] According to some embodiments of the present invention, the phase delay waveplate is configured as a quarter-wave plate, and when the quarter-wave plate is moved into the transmission optical path, the quarter-wave plate is located between the windshield and the optical path adjustment assembly.

[0014] According to some embodiments of the present invention, the head-up display system further includes a platform, the platform having a mounting groove, the quarter-wave plate being slidably disposed in the mounting groove, and the bottom wall of the mounting groove having a light-transmitting hole located between the optical path adjustment component and the windshield, the imaging light reflected by the optical path adjustment component passing through the light-transmitting hole and projecting onto the windshield;

[0015] The quarter-wave plate has a third state and a fourth state. When the quarter-wave plate is in the third state, the quarter-wave plate is misaligned with the light-transmitting hole.

[0016] When the quarter-wave plate is in the fourth state, the quarter-wave plate moves to the light-transmitting hole and covers the light-transmitting hole.

[0017] According to some embodiments of the present invention, the head-up display system further includes a platform, a connector, and a housing. The platform is located on the upper side of the housing. The phase delay plate is mounted on the platform. One end of the connector is fixedly connected to the platform, and the other end is fixedly connected to the housing. At least two reflectors are provided. The image source and at least two reflectors are installed at intervals inside the housing.

[0018] According to some embodiments of the present invention, the optical path adjustment assembly includes a first reflector and a second reflector. The first reflector is configured to reflect the imaging light from the image source to the second reflector, and the second reflector is configured to reflect the imaging light from the first reflector to the first reflector, so that the first reflector reflects the imaging light to the windshield.

[0019] According to some embodiments of the present invention, the first reflector is configured as a plane mirror, and the second reflector is configured as a curved mirror.

[0020] The vehicle according to a second aspect embodiment of the present invention includes the head-up display system described in the first aspect embodiment.

[0021] The vehicle according to the embodiments of this utility model has at least the following beneficial effects:

[0022] The vehicle of this utility model embodiment adopts the head-up display system of the first aspect embodiment. By optimizing the structural design of the head-up display system, the system can adjust the polarization state of the imaging light as needed, ensuring that the driver can clearly see the image content in various situations. This not only improves the display effect of the head-up display system and ensures the clarity and visibility of the displayed image, but also enhances the versatility of the head-up display system, enabling it to adapt to different driving environments and driver states, and always provide a high-quality visual display effect, thereby improving the driver's driving experience and driving safety.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic diagram of the structure of a head-up display system according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the transmission optical path in a head-up display system according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a head-up display system according to another embodiment of the present invention;

[0028] Figure 4 This is a partial schematic diagram of a head-up display system according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of a head-up display system according to another embodiment of the present invention.

[0030] Icon labels:

[0031] Heads-up display system 1000; Eye box 2000;

[0032] Image source 100;

[0033] Optical path adjustment assembly 200; first reflector 210; second reflector 220;

[0034] Windshield 300;

[0035] Half-wave plate 400;

[0036] Platform 500; Mounting slot 510; Light transmission hole 520;

[0037] Quarter-wave plate 600;

[0038] Connector 700;

[0039] 800 for the casing. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0043] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0044] Understandably, because parallel polarized light has low reflectivity on windshields, the imaging light reflected to the driver's eyes is mainly vertically polarized light. Therefore, when a driver wears polarized glasses to block strong light and glare, the glasses filter out vertically polarized light, resulting in a blurry or even completely invisible image on the head-up display. This makes it difficult for the driver to recognize key information from the head-up display, significantly reducing its visibility.

[0045] To address the aforementioned problems, some embodiments of this utility model propose a head-up display system 1000, suitable for vehicles, capable of adapting to different driving environments and driver states, and consistently providing high-quality visual display effects. See details below. Figures 1 to 5 The head-up display system 1000 is described below.

[0046] Reference Figure 1 and Figure 2 As shown in this embodiment of the invention, the head-up display system 1000 includes: an image source 100, an optical path adjustment component 200, and a windshield 300, wherein the image source 100 is used to output imaging light carrying an image. In this embodiment, the image source 100102 can be a liquid crystal display (LCD), a liquid crystal on silicon (LCOS), a digital micro-mirror device (DMD), or a projector, etc., and this embodiment does not limit it to any particular type.

[0047] Continue to refer to Figure 1 and Figure 2As shown in this embodiment of the invention, the optical path adjustment component 200 includes at least one reflector, which is configured to receive and reflect imaging light. Specifically, the optical path adjustment component 200 can be implemented using a combination of a plane mirror and a curved mirror, which is specifically responsible for guiding the imaging light emitted from the image source 100 in a predetermined direction. The windshield 300 is configured to reflect the imaging light to the eye box 2000. The windshield 300 refers to the vehicle's front windshield, specifically implemented using a laminated glass structure, with a reflective film coating on its surface for secondary reflection of the imaging light.

[0048] Combination Figure 2 It is understood that in this embodiment of the invention, the image source 100, the optical path adjustment component 200, and the windshield 300 are arranged sequentially to form a transmission optical path, and the imaging light is transmitted along the transmission optical path. Specifically, the linearly polarized imaging light emitted from the image source 100 is reflected by at least one set of mirrors and reaches the surface of the windshield 300. The imaging light is then reflected by the windshield 300 to the driver's eye box 2000. In the head-up display device, the eye box 2000 refers to the three-dimensional spatial range within which the driver's head can move inside the vehicle. When the driver's head is within this range, both eyes can clearly and completely observe the virtual image.

[0049] Reference Figure 1 and Figure 5 As shown in this embodiment of the invention, the head-up display system 1000 further includes a phase delay plate. The phase delay plate is configured to be movable into or out of the transmission optical path and to change the polarization state of the imaging light when it is moved into the transmission optical path. Specifically, in this embodiment, the phase delay plate is movably disposed in the transmission optical path. It can switch its working state by changing its position. When it enters the transmission optical path, it can convert linearly polarized light into circularly polarized light, or convert vertically polarized light into parallel polarized light. It is understood that a phase delay plate refers to an optical element with birefringence characteristics. Specifically, it can be made of quartz crystal or polymer thin film material. By precisely controlling its thickness, it achieves a phase delay of one-quarter wavelength or half wavelength, thereby changing the polarization state of the light when it enters the optical path.

[0050] Specifically, under normal conditions, the phase retardation plate is outside the optical path. This avoids light loss caused by the intervention of the phase retardation plate, thus ensuring that the brightness of the imaging light and the integrity of the image are not affected. When the driver wears polarized glasses, the phase retardation plate moves into the transmission optical path, causing the incident imaging light to undergo a polarization state conversion when passing through the phase retardation plate. The converted polarized light can penetrate the polarized glasses, thus ensuring that the driver can see the image content through the polarized lenses.

[0051] Understandably, traditional solutions are limited by fixed polarization characteristics and cannot be adapted to polarized glasses. In contrast, this embodiment of the invention is equipped with a phase delay plate, which can move into or out of the transmission optical path formed by the image source 100, the optical path adjustment component 200, and the windshield 300. When the phase delay plate moves into the transmission optical path, it can change the polarization state of the imaging light, thereby enabling the head-up display system 1000 to adjust the polarization state of the imaging light as needed. This ensures that the driver can clearly see the image content in various situations, which not only improves the display effect of the head-up display system 1000 and ensures the clear visibility of the displayed image, but also enhances the versatility of the head-up display system 1000, enabling it to adapt to different driving environments and driver states, and always provide a high-quality visual display effect, thereby improving the driver's driving experience and driving safety.

[0052] Reference Figure 5 As shown, in this embodiment of the invention, the phase delay waveplate is constructed as a half-wave plate 400. When the half-wave plate 400 is moved into the transmission optical path, it is located between the windshield 300 and the eyepiece 2000. The half-wave plate 400 can delay the phase of the polarization state of the imaging light. Specifically, the half-wave plate 400 can be implemented using a birefringent crystal or a polymer thin film, which converts the incident vertically polarized light into parallel polarized light by adjusting the optical axis direction.

[0053] Specifically, when the driver wears polarized glasses, the imaging light reflected by the windshield 300 is vertically polarized light. At this time, the half-wave plate 400 moves into the transmission optical path between the windshield 300 and the eye box 2000. Through the phase delay effect, the vertically polarized light is converted into parallel polarized light, so that the driver can still clearly see the head-up display image when wearing polarized glasses. At the same time, the original transmission optical path is preserved, avoiding the light energy loss problem caused by fixing the half-wave plate 400.

[0054] Reference Figure 1 and Figure 5 As shown in this embodiment of the invention, the head-up display system 1000 further includes a platform 500, which has a mounting groove 510. A half-wave plate 400 is rotatably connected to the platform 500. The platform 500 refers to a support structure for carrying optical components, and can be made of aluminum alloy or engineering plastic. In this embodiment, the platform 500 is used to position and store the half-wave plate 400. The platform 500 and the half-wave plate 400 can be rotatably connected using a structure with a rotating shaft and bearing. In one example, the platform 500 is an instrument panel.

[0055] In this embodiment of the invention, the half-wave plate 400 has a first state and a second state, wherein the first state and the second state refer to the working modes of the half-wave plate 400 being out of the optical path and into the optical path, respectively. It can change its spatial position by rotating relative to the platform 500, thereby controlling the activation and deactivation of the polarization conversion function. Specifically, when the half-wave plate 400 is in the first state, it rotates into the mounting groove 510, and its light-transmitting surface is out of the transmission optical path. When the half-wave plate 400 is in the second state, it rotates into the transmission optical path, so that its light-transmitting surface is perpendicular to the transmission optical path.

[0056] Specifically, when the driver is not wearing polarized glasses, the half-wave plate 400 is rotated and retracted into the mounting slot 510. At this time, the light-transmitting surface of the half-wave plate 400 is completely separated from the light path, and the imaging light is directly reflected by the windshield 300 to the eye box 2000. When the head-up display system 1000 needs to be fitted with polarized glasses, the half-wave plate 400 is rotated to a position perpendicular to the light path. At this time, the light-transmitting surface completely covers the light path, and the vertically polarized imaging light is converted into parallel polarized light after passing through the wave plate, thus allowing it to penetrate the polarized lenses.

[0057] In this embodiment of the invention, the side wall of the mounting groove 510 is provided with two opposing positioning holes, and protrusions are respectively provided on both sides of the half-wave plate 400. The two protrusions are inserted into the two positioning holes respectively. Specifically, the positioning holes refer to the hole-like structures provided on the side wall of the mounting groove 510, which can be circular. They can constrain the position of the protrusions and prevent the half-wave plate 400 from shifting during rotation. The two protrusions are formed on both sides of the half-wave plate 400 and are rotatably installed in the two positioning holes one-to-one.

[0058] Reference Figure 1 and Figure 2 As shown, in this embodiment of the invention, the phase delay waveplate is constructed as a quarter-wave plate 600. When the quarter-wave plate 600 is moved into the transmission optical path, it is located between the windshield 300 and the optical path adjustment assembly 200. The quarter-wave plate 600 can convert linearly polarized light into circularly polarized light. Specifically, the quarter-wave plate 600 can be formed using a birefringent material, which, by changing the polarization state of the imaging light, ensures that the imaging light reflected to the eye box 2000 is not limited by the polarization direction of the polarized glasses.

[0059] Specifically, when the driver wears polarized glasses, the imaging light reflected by the windshield 300 is vertically polarized light. At this time, the quarter-wave plate 600 moves into the transmission optical path between the windshield 300 and the optical path adjustment component 200. By converting the linearly polarized light into circularly polarized light, the driver can still clearly see the head-up display image while wearing polarized glasses, while preserving the original transmission optical path and avoiding the light energy loss problem caused by fixing the quarter-wave plate 600.

[0060] Reference Figure 1 and Figure 3 As shown in this embodiment of the invention, the head-up display system 1000 further includes a platform 500. The platform 500 has a mounting groove 510, and a quarter-wave plate 600 is slidably disposed within the mounting groove 510. The bottom wall of the mounting groove 510 has a light-transmitting hole 520 located between the optical path adjustment component 200 and the windshield 300. Imaging light reflected by the optical path adjustment component 200 passes through the light-transmitting hole 520 and is projected onto the windshield 300. In this embodiment, the length direction of the mounting groove 510 is the sliding direction of the quarter-wave plate 600. Therefore, the mounting groove 510 is divided along its length into a storage area for the quarter-wave plate 600 and a light-transmitting hole 520. The light-transmitting hole 520 is a rectangular or circular light-transmitting area opened on the bottom wall of the mounting groove 510, extending through the upper and lower sides of the platform 500 along its thickness direction.

[0061] The quarter-wave plate 600 has a third state and a fourth state. When the quarter-wave plate 600 is in the third state, it is misaligned with the light-transmitting aperture 520. When the quarter-wave plate 600 is in the fourth state, it moves to the light-transmitting aperture 520 and covers it. Specifically, the imaging light reflected by the optical path adjustment assembly 200 must pass through the light-transmitting aperture 520 before reaching the windshield 300. When the quarter-wave plate 600 is in the third state, its position is completely misaligned with the light-transmitting aperture 520. At this time, the light directly passes through the light-transmitting aperture 520 to reach the windshield 300, avoiding light loss caused by the intervention of the quarter-wave plate 600, thus ensuring that the brightness of the imaging light and the integrity of the image are not affected.

[0062] When polarized glasses are needed, the quarter-wave plate 600 is slid to its fourth state, completely covering the light aperture 520. At this point, the polarization state of the light is converted to circularly polarized light after passing through the quarter-wave plate 600. The circularly polarized light retains its circular polarization characteristics after being reflected by the windshield 300. Therefore, regardless of the polarization direction of the polarized glasses, the human eye can receive a portion of the light intensity, thus observing a clear image.

[0063] It should be noted that, in this embodiment of the present invention, the switching of the half-wave plate 400 between the first and second states and the switching of the quarter-wave plate 600 between the third and fourth states can be achieved by manual or electric drive, and this embodiment does not limit this.

[0064] Reference Figure 2 and Figure 4 As shown in this embodiment of the invention, the head-up display system 1000 further includes a platform 500, a connector 700, and a housing 800. The platform 500 is located on the upper side of the housing 800, and a phase delay plate is mounted on the platform 500. One end of the connector 700 is fixedly connected to the platform 500, and the other end is fixedly connected to the housing 800. The connector 700 is a rigid component used to connect the platform 500 and the housing 800, ensuring a fixed relative position between them and preventing optical path misalignment. In this embodiment, at least two reflectors are provided, and the image source 100 and at least two reflectors are spaced apart within the housing 800. The housing 800 is a closed structure that houses the image source 100 and the reflectors. It can be manufactured using injection molding or stamping processes, and its internal space is designed to meet the optical path transmission requirements. The optical path is folded by spaced-apart reflectors.

[0065] Specifically, platform 500 is fixed to the upper side of housing 800, and phase delay plate is mounted on the surface of platform 500 or embedded in its mounting groove 510. Connector 700 rigidly connects platform 500 and housing 800, ensuring no relative displacement between them. The interior of housing 800 is divided into multiple areas, image source 100 is arranged on the top or side of housing 800, and two reflectors are mounted at intervals on the inner wall of housing 800, forming a folded optical path.

[0066] Reference Figure 1 and Figure 2 As shown in this embodiment of the invention, the optical path adjustment assembly 200 includes a first reflector 210 and a second reflector 220. The first reflector 210 is configured to reflect imaging light from the image source 100 to the second reflector 220, and the second reflector 220 is configured to reflect imaging light from the first reflector 210 back to the first reflector 210, so that the first reflector 210 reflects the imaging light to the windshield 300. In one example, the first reflector 210 is constructed as a plane mirror, and the second reflector 220 is constructed as a curved mirror.

[0067] Specifically, the planar structure of the first reflector 210 allows light to be reflected at a fixed angle, facilitating adjustment of the light path direction. The curved shape of the second reflector 220 enables dynamic compensation of the light path, correcting distortion caused by the elongation of the light path. Specifically, after the imaging light is output from the image source 100, it is first reflected by the first reflector 210 to the second reflector 220, which then reflects the light back to the first reflector 210. Finally, the first reflector 210 reflects the light to the windshield 300.

[0068] Understandably, the double reflection creates a refracted light path, significantly increasing the total length of the light path and thus extending the projection distance of the virtual image. The plane mirror, by finely adjusting its installation angle, ensures that light is accurately projected onto the predetermined area of ​​the windshield 300; the curved mirror, through its surface curvature, converges or diverges the light, eliminating image distortion caused by the extended light path or the curvature of the windshield 300.

[0069] An embodiment of this utility model also proposes a vehicle including the head-up display system 1000 described above. Specifically, the vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. The vehicle can also be a commercial vehicle, such as a van, bus, small truck, or large trailer. The vehicle can be a gasoline-powered vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0070] The vehicle of this utility model embodiment adopts the head-up display system 1000 of the above embodiment. By optimizing the structural design of the head-up display system 1000, the head-up display system 1000 can adjust the polarization state of the imaging light as needed, ensuring that the driver can clearly see the image content in various situations. This not only improves the display effect of the head-up display system 1000 and ensures the clear visibility of the displayed image, but also enhances the versatility of the head-up display system 1000, enabling it to adapt to different driving environments and driver states, and always provide a high-quality visual display effect, thereby improving the driver's driving experience and driving safety.

[0071] Since the vehicle adopts all the technical solutions of the head-up display system 1000 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0072] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A head-up display system, characterized in that, include: Image source, used to output imaging light carrying an image; An optical path adjustment assembly includes at least one mirror, wherein the at least one mirror is configured to receive and reflect the imaging light; The windshield is configured to reflect the imaging light to the eye box; The image source, the optical path adjustment component, and the windshield are arranged in sequence to form a transmission optical path, and the imaging light is transmitted along the transmission optical path. The head-up display system also includes a phase delay plate, which is configured to be able to move into or out of the transmission optical path and to change the polarization state of the imaging light when it is moved into the transmission optical path.

2. The head-up display system according to claim 1, characterized in that, The phase delay waveplate is configured as a half-waveplate, and when the half-waveplate is moved into the transmission optical path, the half-waveplate is located between the windshield and the eye box.

3. The head-up display system according to claim 2, characterized in that, The head-up display system also includes a platform, which is provided with a mounting slot, and the half-wave plate is rotatably connected to the platform. The half-wave plate has a first state and a second state. When the half-wave plate is in the first state, the half-wave plate rotates into the mounting groove and the light-transmitting surface of the half-wave plate is separated from the transmission optical path. When the half-wave plate is in the second state, the half-wave plate rotates and moves into the transmission optical path so that the light-transmitting surface of the half-wave plate is perpendicular to the transmission optical path.

4. The head-up display system according to claim 3, characterized in that, The side wall of the mounting groove is provided with two positioning holes arranged opposite each other, and the two sides of the half-wave plate are respectively provided with protrusions, and the two protrusions are inserted into the two positioning holes respectively.

5. The head-up display system according to claim 1, characterized in that, The phase delay plate is configured as a quarter-wave plate, and when the quarter-wave plate is moved into the transmission optical path, the quarter-wave plate is located between the windshield and the optical path adjustment assembly.

6. The head-up display system according to claim 5, characterized in that, The head-up display system also includes a platform, the platform having a mounting groove, the quarter-wave plate being slidably disposed in the mounting groove, the bottom wall of the mounting groove having a light-transmitting hole located between the optical path adjustment component and the windshield, the imaging light reflected by the optical path adjustment component passing through the light-transmitting hole and projecting onto the windshield; The quarter-wave plate has a third state and a fourth state. When the quarter-wave plate is in the third state, the quarter-wave plate is misaligned with the light-transmitting hole. When the quarter-wave plate is in the fourth state, the quarter-wave plate moves to the light-transmitting hole and covers the light-transmitting hole.

7. The head-up display system according to claim 1, characterized in that, The head-up display system also includes a platform, a connector, and a housing. The platform is located on the upper side of the housing. The phase delay plate is mounted on the platform. One end of the connector is fixedly connected to the platform, and the other end is fixedly connected to the housing. At least two reflectors are provided. The image source and at least two reflectors are installed at intervals inside the housing.

8. The head-up display system according to claim 7, characterized in that, The optical path adjustment assembly includes a first reflector and a second reflector. The first reflector is configured to reflect the imaging light from the image source to the second reflector, and the second reflector is configured to reflect the imaging light from the first reflector back to the first reflector, so that the first reflector reflects the imaging light to the windshield.

9. The head-up display system according to claim 8, characterized in that, The first reflector is configured as a plane mirror, and the second reflector is configured as a curved mirror.

10. A vehicle, characterized in that, Includes the head-up display system according to any one of claims 1 to 9.

Images