Head-up display system and vehicle

Abstract

A head-up display system (100) and a vehicle, relating to the technical field of vehicles. The head-up display system (100) comprises an image generation unit (10), a light-homogenizing unit (20), and a reflection unit. The image generation unit (10) is configured to emit an imaging beam, the imaging beam comprising a first beam and a second beam. The light-homogenizing unit (20) is configured to separately receive and transmit the first light beam and the second light beam, and isolate optical paths of the first light beam and the second light beam from each other. The reflection unit is configured to separately receive the first light beam and the second light beam, and reflect the first light beam and the second light beam to a vehicle window (200), so as to respectively form a near virtual image and a far virtual image.

Description

Head-up display system and vehicle

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202421433055.7, filed on June 20, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of vehicle technology, and in particular to a head-up display system and a vehicle. Background Technology

[0004] Head-up display systems typically include an image generation unit and curved mirrors. The imaging beam generated by the image generation unit can be reflected to the car window through the reflective unit composed of mirrors to form a virtual image with depth at the car window.

[0005] In related technologies, to enable a head-up display (HUD) system to simultaneously display near and far information, the HUD system typically has two image generation units to form two virtual images with different depths of field at the vehicle window. Because this setup requires two image generation units to form the near and far virtual images respectively, the HUD system occupies a large size and has a high cost. Summary of the Invention

[0006] The main objective of this application is to propose a head-up display system and vehicle that aims to reduce the size and cost of the head-up display system.

[0007] To achieve the above objectives, the head-up display system proposed in this application includes:

[0008] An image generation unit, wherein the image generation unit is used to emit an imaging beam;

[0009] A light-uniform unit is disposed on the light-emitting path of the image generation unit, and is used to receive and transmit the imaging beam, and to separate the imaging beam into a first beam and a second beam, wherein the optical paths of the first beam and the second beam are isolated from each other.

[0010] A reflection unit is used to receive the first beam and the second beam respectively, and reflect the first beam and the second beam to the car window to form a near virtual image and a far virtual image respectively.

[0011] In one embodiment, the homogenizing unit includes:

[0012] A light-diffusing section, disposed on the light-emitting path of the image generation unit, is used to receive and transmit the imaging beam; and

[0013] A light-blocking part is provided on one side of the light-uniforming part, and the light-uniforming part is divided into a first light-uniforming structure and a second light-uniforming structure. The first light-uniforming structure is used to transmit a portion of the imaging beam and form the first beam, and the second light-uniforming structure is used to transmit a portion of the imaging beam and form the second beam.

[0014] In one embodiment, the maximum width of the first light-diffusing structure is not greater than the minimum width of the second light-diffusing structure.

[0015] In one embodiment, one end of the light-blocking part is disposed on the side of the light-uniforming part away from the image generating unit, and the other end extends in the direction away from the image generating unit.

[0016] In one embodiment, the reflective unit includes:

[0017] The first reflecting mirror is located downstream of the light-diffusing unit and is used to receive the first beam and the second beam respectively, and reflect the first beam and the second beam to the car window to form a near virtual image and a far virtual image respectively.

[0018] A second reflector is disposed between the light-diffusing unit and the first reflector. The second reflector receives the first light beam and reflects the first light beam back to the first reflector.

[0019] A third reflecting mirror is disposed between the light-diffusing unit and the first reflecting mirror. The third reflecting mirror is used to receive the second light beam and reflect the second light beam back to the first reflecting mirror.

[0020] In one embodiment, the first reflector is configured as a freeform mirror, and the reflecting surface of the first reflector is concave.

[0021] And / or, the second reflector is configured as a plane mirror or a freeform mirror;

[0022] And / or, the third reflecting mirror is configured as a freeform mirror, and the reflecting surface of the third reflecting mirror is concave.

[0023] In one embodiment, the image generation unit is positioned at a distance from the vehicle window in both a height direction and a horizontal direction, and the image generation unit and the light-diffusing unit are spaced apart in the horizontal direction.

[0024] In one embodiment, the image generation unit is located to the side of the central axis of the homogenizing unit, and at least a portion of the outgoing rays of the imaging beam intersect at least partially with the central axis of the homogenizing unit.

[0025] In one embodiment, the image generation unit includes a DLP optical engine;

[0026] And / or, the image generation unit includes at least two lenses, wherein at least a portion of at least one of the lenses is made of glass, and the remaining lenses are made of plastic.

[0027] This application also proposes a vehicle, including a window and a head-up display system as described in any of the preceding claims, the head-up display system comprising:

[0028] An image generation unit, wherein the image generation unit is used to emit an imaging beam;

[0029] A light-uniform unit is disposed on the light-emitting path of the image generation unit, and is used to receive and transmit the imaging beam, and to separate the imaging beam into a first beam and a second beam, wherein the optical paths of the first beam and the second beam are isolated from each other.

[0030] A reflection unit is used to receive the first beam and the second beam respectively, and reflect the first beam and the second beam to the car window to form a near virtual image and a far virtual image respectively.

[0031] The technical solution of this application provides a light-uniforming unit on the light output path of a single image generation unit. This unit spatially divides the optical path of the imaging beam generated by the image generation unit into two parts: a first beam and a second beam. This expands the optical path of the imaging light source. The first and second beams are then reflected to the vehicle window by a reflection unit, and their optical paths are isolated from each other. With this configuration, the head-up display system can form near and far virtual images using a single image generation unit. Compared to related technologies that use two image generation units to form near and far virtual images respectively, the technical solution of this application reduces the number of image generation units in the head-up display system, thereby reducing the size and cost of the system. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 is a schematic diagram of an embodiment of the head-up display system provided in this application;

[0034] Figure 2 is a partial structural diagram of the head-up display system in Figure 1;

[0035] Figure 3 is a structural diagram of the first embodiment of the light homogenizing section of the light homogenizing unit of the head-up display system in Figure 1;

[0036] Figure 4 is a structural diagram of the second embodiment of the light homogenizing section of the light homogenizing unit of the head-up display system in Figure 1;

[0037] Figure 5 is another structural schematic diagram of the homogenizing part in Figure 4;

[0038] Figure 6 is a structural diagram of the third embodiment of the light homogenizing section of the light homogenizing unit of the head-up display system in Figure 1.

[0039] Figure 7 is a structural diagram of the fourth embodiment of the light homogenizing section of the light homogenizing unit in the head-up display system shown in Figure 1.

[0040] Explanation of icon numbers:

[0041] 100. Head-up display system; 10. Image generation unit; 20. Light homogenizing unit; 21. Light homogenizing section; 211. First light homogenizing structure; 211a. First side; 212. Second light homogenizing structure; 212a. Second side; 213. Mounting slot; 22. Light blocking section; 30. First reflector; 40. Second reflector; 50. Third reflector; 200. Window.

[0042] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Embodiments of the present invention

[0043] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0044] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0046] Head-up display systems typically include an image generation unit and a curved mirror. The imaging beam generated by the image generation unit can be reflected by the curved mirror to the car window to form a virtual image with depth at the car window.

[0047] In related technologies, to enable a head-up display (HUD) system to simultaneously display near and far information, the HUD system typically has two image generation units to form two virtual images with different depths of field at the vehicle window. Because this setup requires two image generation units to form the near and far virtual images respectively, the HUD system occupies a large size and has a high cost.

[0048] This application proposes a head-up display system 100.

[0049] Please refer to Figures 1 and 2. In one embodiment of this application, the head-up display system 100 includes:

[0050] An image generation unit 10 is used to emit an imaging beam, the imaging beam including a first beam and a second beam.

[0051] A light-diffusing unit 20 is disposed on the light-emitting path of the image generation unit 10, and is used to receive and transmit the first light beam and the second light beam respectively, and to isolate the light paths of the first light beam and the second light beam from each other.

[0052] A reflection unit is provided, which is used to receive the first beam and the second beam respectively, and reflect the first beam and the second beam to the window 200 to form a near virtual image and a far virtual image respectively.

[0053] The technical solution of this application provides a light-diffusing unit 20 on the light output path of a single image generation unit 10. The light-diffusing unit 20 can spatially divide the optical path of the imaging beam generated by the image generation unit 10 into two parts: a first beam and a second beam, thereby expanding the optical path of the imaging light source. Then, the first beam and the second beam can be reflected to the vehicle window 200 by a reflection unit, and the optical paths of the first beam and the second beam are isolated from each other. With this configuration, the head-up display system 100 can form near and far virtual images with a single image generation unit 10. Compared with the related technology that uses two image generation units 10 to form near and far virtual images respectively, the technical solution of this application can reduce the number of image generation units 10 in the head-up display system 100, thereby reducing the size and cost of the head-up display system 100.

[0054] Please refer to Figures 1 and 2. In an embodiment of this application, the light-diffusing unit 20 includes:

[0055] A light-diffusing section 21 is disposed on the light-emitting path of the image generation unit 10, and is used to receive and transmit the imaging beam; and

[0056] A light-blocking part 22 is disposed on one side of the light-uniforming part 21 and divides the light-uniforming part 21 into a first light-uniforming structure 211 and a second light-uniforming structure 212. The first light-uniforming structure 211 is used to transmit part of the imaging beam and form the first beam, and the second light-uniforming structure 212 is used to transmit part of the imaging beam and form the second beam.

[0057] The light-diffusing section 21 can be composed of a light-diffusing sheet or plate that is transparent to light, and includes an incident light surface and an exit light surface arranged opposite to each other. The incident light surface of the light-diffusing section 21 is disposed facing the image generating unit 10, and is used to receive the imaging beam emitted to the light-diffusing section 21, and to uniformly transmit the imaging beam through the light-diffusing section 21, thereby achieving uniformity of the imaging beam. The light-blocking section 22 is made of an opaque material. The light-blocking section 22 can be disposed on the incident light surface of the light-diffusing section 21 or on the exit light surface of the light-diffusing section 21. When the imaging beam is transmitted to the light-blocking section 22, it can be spatially separated into two parts, a first beam and a second beam, by the light-blocking section 22, and then transmitted to the second reflector 40 and the third reflector 50, respectively.

[0058] Please refer to Figures 2 to 7. In the embodiments of this application, the maximum width of the first light-diffusing structure 211 is not greater than the minimum width of the second light-diffusing structure 212.

[0059] A first homogenizing structure 211 and a second homogenizing structure 212 are arranged sequentially along the length of the homogenizing section 21. The first homogenizing structure 211 receives a first light beam and homogenizes it within its effective width to form a near-virtual image. Thus, homogenization of the first light beam is achieved through the first homogenizing structure 211. The second homogenizing structure 212 receives a second light beam and homogenizes it within its effective width to form a far-virtual image. Thus, homogenization of the second light beam is achieved through the second homogenizing structure 212. The homogenizing width of the first homogenizing structure 211 is smaller than the homogenizing width of the second homogenizing structure 212.

[0060] Specifically, please refer to Figure 3, which is a schematic diagram of the structure of the first embodiment of the light-diffusing section 21 of this application.

[0061] In the first embodiment, both the first light-diffusing structure 211 and the second light-diffusing structure 212 are rectangular. The first light-diffusing structure 211 and the second light-diffusing structure 212 are respectively disposed on both sides of the light-blocking portion 22, and the width of the first light-diffusing structure 211 is smaller than the width of the second light-diffusing structure 212, thus achieving a design where the light-diffusing width of the first light-diffusing structure 211 is smaller than the light-diffusing width of the second light-diffusing structure 212. This arrangement effectively reduces the volume of the first light-diffusing structure 211. This arrangement also improves the design flexibility of the light-diffusing portion 21.

[0062] Of course, the technical solution of this application is not limited to this. Please refer to Figure 4, which is a structural schematic diagram of the second embodiment of the light-diffusing part 21 of this application.

[0063] In the second embodiment, the main structure of the first light-uniforming structure 211 is convex, and notches are formed at both ends of the side opposite to the second light-uniforming structure 212; the second light-uniforming structure 212 is rectangular.

[0064] Specifically, the first light-diffusing structure 211 has a first side 211a facing away from the second light-diffusing structure 212, and the second light-diffusing structure has a second side 211b facing away from the first light-diffusing structure 211. The width of the first side 211a is smaller than the width of the second light-diffusing structure 212, thereby achieving a design where the light-diffusing width of the first light-diffusing structure 211 is smaller than the light-diffusing width of the second light-diffusing structure 212. With this configuration, since the two ends of the side of the first light-diffusing structure 211 facing away from the second light-diffusing structure 212 have notches, the effect of reducing the size of the light-diffusing section 21 can be achieved to a certain extent. Furthermore, the optical path of the imaging beam emitted from the image generation unit 10 to the light-diffusing section 21 can be translated and adjusted within the effective range of the light-diffusing section 21.

[0065] Of course, the technical solution of this application is not limited to this. Please refer to Figure 6. Based on the second embodiment described above, this application proposes a third embodiment of the light-diffusing part 21.

[0066] In the third embodiment, the first light-uniforming structure 211 has a first side 211a formed away from the second light-uniforming structure 212, and the two ends of the first side 211a are smoothly transitioned along the direction toward the second light-uniforming structure 212. It should be noted that the smooth transition structure formed at the two ends of the first side 211a can be an arc edge as shown in Figure 6, or it can be a beveled edge, or it can be set as other smooth transition linear structures. The specific implementation can be set according to actual needs and is not limited here.

[0067] The width of the first side 211a is smaller than the width of the second light-uniforming structure 212. This allows the light-uniforming width of the first light-uniforming structure 211 to be smaller than that of the second light-uniforming structure 212. It also achieves the same technical effect as the second embodiment, which reduces the size of the light-uniforming part 21 and allows the optical path of the imaging beam to be translated and adjusted within the effective range of the light-uniforming part 21. This will not be elaborated further here.

[0068] Of course, the technical solution of this application is not limited to this. Please refer to Figure 7. Based on the third embodiment described above, this application proposes a fourth embodiment of the light-uniforming section 21. In the fourth embodiment, the main structure of the first light-uniforming structure 211 is arc-shaped, and its width gradually decreases along the direction away from the second light-uniforming structure 212. This allows the light-uniforming width of the first light-uniforming structure 211 to be smaller than that of the second light-uniforming structure 212. Furthermore, it achieves the same technical effect as the second embodiment, reducing the size of the light-uniforming section 21 and allowing the optical path of the imaging beam to be translated and adjusted within the effective range of the light-uniforming section 21. Further details are omitted here.

[0069] Please refer to Figure 5. In the embodiment of this application, the light-diffusing part 21 is further provided with a mounting groove 213. The mounting groove 213 is disposed between the first light-diffusing structure 211 and the second light-diffusing structure 212. The light-blocking part 22 and the mounting groove 213 are inserted and engaged.

[0070] The shape of the mounting groove 213 is adapted to the outer contour of the light-blocking part 22 so that the light-blocking part 22 can be inserted and matched with the mounting groove 213 of the light-diffusing part 21, thereby realizing the fixed connection between the light-blocking part 22 and the light-diffusing part 21, and improving the connection stability between the light-blocking part 22 and the light-diffusing part 21.

[0071] Of course, the technical solution of this application is not limited to this. In some embodiments, the light-diffusing part 21 may not have a slot 213. In this case, the light-blocking part 22 may have its end fixed to the corresponding area on the light-diffusing part 21 by adhesive, so as to achieve the installation and fixation between the light-diffusing part 21 and the light-blocking part 22. It should be noted that the light-diffusing part 21 and the light-blocking part 22 may also be installed and fixed in other ways. The specific implementation can be set according to actual needs and is not limited here.

[0072] The first light-uniforming structure 211 forms a first side 211a on the side opposite to the second light-uniforming structure 212, and the second light-uniforming structure 212 forms a second side 212a on the side opposite to the first light-uniforming structure 211. The width of the first side 211a is smaller than the width of the second side 212a.

[0073] Please refer to Figure 1. In one embodiment of this application, the reflective unit includes:

[0074] The first reflecting mirror 30 is disposed downstream of the light-diffusing unit 20, and is used to receive the first beam and the second beam respectively, and reflect the first beam and the second beam to the car window 200 to form a near virtual image and a far virtual image respectively.

[0075] A second reflector 40 is disposed between the light-diffusing unit 20 and the first reflector 30. The second reflector 40 is used to receive the first light beam and reflect the first light beam back to the first reflector 30.

[0076] The third reflector 50 is disposed between the light-diffusing unit 20 and the first reflector 30. The third reflector 50 is used to receive the second light beam and reflect the second light beam back to the first reflector 30.

[0077] Specifically, the imaging beam emitted from the image generation unit 10 is divided into a first beam and a second beam by the light homogenizing unit 20. The first beam is transmitted to the window 200 in sequence through the second reflector 40 and the first reflector 30, and the second beam is transmitted to the window 200 in sequence through the third reflector 50 and the first reflector 30.

[0078] In the embodiments of this application, the first reflector 30 is a freeform mirror, and the reflecting surface of the first reflector 30 is concave.

[0079] And / or, the second reflecting mirror 40 is a plane mirror or a freeform mirror;

[0080] And / or, the third reflecting mirror 50 is a freeform mirror, and the reflecting surface of the third reflecting mirror 50 is concave.

[0081] In some embodiments, the first reflector 30 is a freeform mirror with its reflective surface facing the vehicle window 200. The first beam and the second beam share the first reflector 30. The second reflector 40 can be a plane mirror, and the third reflector 50 is a freeform mirror, specifically a concave mirror. The distance from the second reflector 40 to the homogenizing unit 20 is less than the distance from the third reflector 50 to the homogenizing unit 20, and the second reflector 40 and the third reflector 50 have different radii of curvature. This allows the imaging focal lengths of the first beam and the second beam to be changed, creating the visual effects of a far focal plane and a near focal plane, so that a near virtual image and a far virtual image can be formed by the first beam and the second beam, respectively.

[0082] Specifically, by setting the third reflector 50 as a concave mirror, when the second beam is emitted to the third reflector 50 and reflected to the window 200 by the third reflector 50, the light can be converged by the concave reflector, so that the second beam has a better convergence effect, thereby ensuring the imaging quality of the virtual image of the head-up display system 100.

[0083] Furthermore, in some embodiments, the first reflector 30, the second reflector 40, and the third reflector 50 can all be rotatably configured. Thus, by adjusting the positions of the first reflector 30, the second reflector 40, and the third reflector 50, the imaging distance of the virtual image displayed by the head-up display system 100 can be adjusted. The rotatability of the reflectors can be achieved by setting a rotation axis.

[0084] Please refer to Figures 1 and 2. In the embodiments of this application, one end of the light-blocking part 22 is disposed on the side of the light-uniforming part 21 away from the image generating unit 10, and the other end extends in the direction away from the image generating unit 10.

[0085] This configuration allows the imaging beam to be divided into a first beam and a second beam, which are transmitted toward the second reflector 40 and the third reflector 50, respectively. The light-blocking part 22 blocks the light paths of the first beam and the second beam, thus avoiding interference between the first beam and the second beam, which helps to ensure the normal display of near and far virtual images.

[0086] In the embodiments of this application, the image generation unit 10 is located at a distance from the vehicle window in both the height and horizontal directions, and the image generation unit 10 and the light-diffusing unit are spaced apart in the horizontal direction.

[0087] It should be noted that since the head-up display system 100 is usually set below the windshield of a vehicle, and the installation space in the vehicle in the height direction is limited, it is beneficial to reduce the size of the head-up display system 100 in the height direction by arranging the image generation unit 10 and the light equalization unit 20 at intervals in the horizontal direction.

[0088] Referring to Figure 2, in an embodiment of this application, the image generation unit 10 is located to the side of the central axis of the homogenizing unit 20, and at least a portion of the outgoing rays of the imaging beam intersect at least partially with the central axis of the homogenizing unit 20.

[0089] The light-emitting side of the image generation unit 10 is disposed toward the light-uniforming unit 20, and at least a portion of the emitted light rays of the imaging beam intersect at least partially with the central axis of the light-uniforming unit 20.

[0090] Specifically, the optical axis of the image generation unit 10 and the central axis of the light-diffusing unit 20 can be offset. Furthermore, at least a portion of the outgoing rays of the imaging beam intersect at least partially with the central axis of the light-diffusing unit 20, allowing the imaging beam to exit at a specific angle to the light-diffusing unit 20. The upward projection angle formed by the image generation unit 10 can be adapted to its positional relationship with the light-diffusing unit 20, which helps to reduce the size of the head-up display system 100 in the height direction.

[0091] In embodiments of this application, the image generation unit 10 includes a DLP optical engine.

[0092] In this way, a head-up display system 100 based on DLP (Digital Light Processing) technology can be realized. The DLP optical engine's DMD chip includes millions of tiny aluminum micromirrors, and the brightness state of the light source can be realized by controlling the rotation angle of the micromirrors based on signals, thereby ensuring the imaging quality and brightness of the head-up display system 100.

[0093] Of course, the technical solution of this application is not limited to this. In some embodiments, the image generation unit 10 may also be based on TFT-LCD (Thin film transistor liquid crystal display). The specific implementation can be set according to actual needs and is not limited here.

[0094] In an embodiment of this application, the image generation unit 10 includes at least two lenses, wherein at least a portion of at least one of the lenses is made of glass, and the remaining lenses are made of plastic.

[0095] This configuration allows the lens assembly of the image generation unit 10 to be a glass-plastic hybrid scheme. Compared to a scheme where all lenses of the image generation unit 10 are made of glass, this configuration reduces the number of lenses in the image generation unit 10, thereby reducing the overall size and weight of the image generation unit 10 and lowering its cost.

[0096] This application also proposes a vehicle including a window 200 and a head-up display system 100. The specific structure of the head-up display system 100 is as described in the above embodiments. Since this vehicle adopts all the technical solutions of all 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 described in detail here.

[0097] The head-up display system 100 reflects the image onto the driver's vision through the vehicle window 200, forming near and far virtual images with different depths of field. These near and far virtual images can be arranged sequentially along vertical or horizontal axes, thus preventing them from obstructing each other and ensuring the display effect of the head-up display system 100. In some embodiments, the vehicle window 200 can be a windshield in front of the driver's seat; in other embodiments, it can be a side window of the vehicle, without limitation.

[0098] In some embodiments, the near virtual image of the head-up display system 100 is used to display near-field information, such as vehicle speed and mileage, while the far virtual image is used to display far-field information, such as indication information of external objects or navigation information, thereby improving the AR fusion effect of the head-up display system 100.

[0099] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A head-up display system, wherein, The head-up display system comprises: an image generating unit for emitting an imaging light beam; a light homogenizing unit arranged in the light path of the image generating unit, for receiving and transmitting the imaging light beam, and separating the imaging light beam into a first light beam and a second light beam, the light paths of the first light beam and the second light beam being isolated from each other; a reflecting unit for respectively receiving the first light beam and the second light beam, and reflecting the first light beam and the second light beam to the vehicle window to form a near virtual image and a far virtual image respectively.

2. The heads-up display system of claim 1, wherein, The light homogenizing unit comprises: a light homogenizing part arranged in the light path of the image generating unit, for receiving and transmitting the imaging light beam; and a light blocking part arranged on one side of the light homogenizing part, and separating the light homogenizing part into a first light homogenizing structure and a second light homogenizing structure, the first light homogenizing structure being used for transmitting part of the imaging light beam and forming the first light beam, and the second light homogenizing structure being used for transmitting part of the imaging light beam and forming the second light beam.

3. The heads-up display system of claim 2, wherein, The maximum width of the first light homogenizing structure is not greater than the minimum width of the second light homogenizing structure.

4. The heads-up display system of claim 2, wherein, The first light homogenizing structure is used for receiving the first light beam, so that the first light beam becomes uniform within the effective width range of the first light homogenizing structure; The second light homogenizing structure is used for receiving the second light beam, so that the second light beam becomes uniform within the effective width range of the second light homogenizing structure.

5. The heads-up display system of claim 2, wherein, The first light homogenizing structure is formed with a first side edge away from the second light homogenizing structure, and the second light homogenizing structure is formed with a second side edge away from the first light homogenizing structure, the width of the first side edge being smaller than the width of the second light homogenizing structure.

6. The heads-up display system of claim 2, wherein, The main structure of the first light homogenizing structure is arranged in an arc shape, and the width of the first light homogenizing structure gradually decreases in the direction away from the second light homogenizing structure.

7. The heads-up display system of claim 2, wherein, The light homogenizing part is further provided with a mounting groove arranged between the first light homogenizing structure and the second light homogenizing structure, and the light blocking part and the mounting groove are inserted and fitted.

8. The heads-up display system of claim 2, wherein, One end of the light blocking part is arranged on the side of the light homogenizing part away from the image generating unit, and the other end extends in the direction away from the image generating unit.

9. The heads-up display system of any one of claims 1 to 8, wherein, The reflecting unit comprises: a first reflecting mirror arranged downstream of the light homogenizing unit, for respectively receiving the first light beam and the second light beam, and reflecting the first light beam and the second light beam to the vehicle window to form a near virtual image and a far virtual image respectively; a second reflecting mirror arranged between the light homogenizing unit and the first reflecting mirror, for receiving the first light beam and reflecting the first light beam to the first reflecting mirror; and a third reflecting mirror arranged between the light homogenizing unit and the first reflecting mirror, for receiving the second light beam and reflecting the second light beam to the first reflecting mirror.

10. The heads-up display system of claim 9, wherein, The first reflecting mirror, the second reflecting mirror and the third reflecting mirror are all arranged to be rotatable.

11. The heads-up display system of claim 9, wherein, The first reflecting mirror is arranged as a free-form mirror, and the reflecting surface of the first reflecting mirror is arranged in a concave shape. And / or, the second mirror is arranged as a plane mirror or a free-form mirror. And / or, the third mirror is arranged as a free-form mirror, and a reflecting surface of the third mirror is arranged as a concave surface.

12. The heads-up display system of any one of claims 1 to 8, wherein, The image generating unit is arranged along a horizontal direction with the homogenizing unit, and has a height direction and a horizontal direction.

13. The heads-up display system of claim 12, wherein, The image generating unit is arranged on a side of a central axis of the homogenizing unit, and at least part of an exiting light ray of the imaging light beam intersects with the central axis of the homogenizing unit.

14. The heads-up display system of any one of claims 1 to 8, wherein, The image generating unit comprises a DLP light engine. And / or, the image generating unit comprises at least two lenses, at least part of at least one of the lenses is made of glass, and the rest of the lenses are made of plastic.

15. A vehicle, wherein, The vehicle comprises a vehicle window and the head-up display system.

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