Head-up display system and vehicle

Abstract

The utility model discloses a head-up display system and a vehicle, and relates to the technical field of vehicles. The head-up display system comprises an image generation unit, a dodging unit and a reflection unit, the image generation unit is used for emitting imaging light beams, and the imaging light beams comprise a first light beam and a second light beam. The dodging unit is used for receiving and transmitting the first light beam and the second light beam respectively and enabling light paths of the first light beam and the second light beam to be mutually isolated. The reflection unit is used for receiving the first light beam and the second light beam respectively and reflecting the first light beam and the second light beam to the vehicle window so as to form a near virtual image and a far virtual image respectively. According to the technical scheme, the size of the head-up display system can be reduced, and the cost of the head-up display system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a head-up display system and a vehicle. Background Art

[0002] The head-up display system generally includes an image generating unit and a curved reflector. The imaging light beam generated by the image generating unit can be reflected to the vehicle window via a reflecting unit formed by the reflector to form a virtual image with depth of field at the vehicle window.

[0003] In the related art, in order to enable the head-up display system to display near-view information and far-view information at the same time, the head-up display system is usually provided with two image generation units to form two virtual images with different depths of field at the vehicle window. Since this setting method requires two image generation units to form near virtual images and far virtual images respectively, the head-up display system occupies a large volume and has a high cost. Utility Model Content

[0004] The main purpose of the utility model is to provide a head-up display system and a vehicle, aiming to reduce the volume of the head-up display system and reduce the cost of the head-up display system.

[0005] To achieve the above-mentioned purpose, the head-up display system proposed by the present invention includes:

[0006] An image generating unit, the image generating unit being used to emit an imaging light beam;

[0007] a light homogenization unit, the light homogenization unit being arranged on the light output path of the image generating unit, and being used for receiving and transmitting the imaging light beam, and separating the imaging light beam into a first light beam and a second light beam, wherein the light paths of the first light beam and the second light beam are isolated from each other;

[0008] A reflecting unit is used to receive the first light beam and the second light beam respectively, and reflect 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.

[0009] In one embodiment, the light homogenization unit includes:

[0010] a light homogenizing unit, the light homogenizing unit being arranged on a light output path of the image generating unit and being used for receiving and transmitting the imaging light beam; and

[0011] A light blocking portion is arranged on one side of the light evening portion, and separates the light evening portion into a first light evening structure and a second light evening structure, the first light evening structure is used to transmit part of the imaging light beam and form the first light beam, and the second light evening structure is used to transmit part of the imaging light beam and form the second light beam.

[0012] In one implementation, a maximum width of the first light homogenizing structure is not greater than a minimum width of the second light homogenizing structure.

[0013] In one embodiment, one end of the light blocking portion is disposed on a side of the light evenly spaced portion away from the image generating unit, and the other end is extended in a direction away from the image generating unit.

[0014] In one embodiment, the reflection unit comprises:

[0015] a first reflector, which is disposed downstream of the light homogenizing unit and is used to receive the first light beam and the second light beam, respectively, and reflect 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;

[0016] a second reflector, the second reflector being disposed between the light homogenizing unit and the first reflector, the second reflector being used to receive the first light beam and reflect the first light beam to the first reflector; and

[0017] A third reflector is provided between the light homogenizing unit and the first reflector, and is used for receiving the second light beam and reflecting the second light beam to the first reflector.

[0018] In one embodiment, the first reflector is configured as a free-form surface mirror, and the reflective surface of the first reflector is configured as a concave surface;

[0019] And / or, the second reflector is configured as a plane mirror or a free-form mirror;

[0020] And / or, the third reflector is configured as a free-form surface mirror, and the reflective surface of the third reflector is configured as a concave surface.

[0021] In one embodiment, the image generation unit is spaced apart from the vehicle window in a height direction and a horizontal direction, and the image generation unit and the light homogenization unit are spaced apart in the horizontal direction.

[0022] In one embodiment, the image generation unit is located on the side of the central axis of the light homogenization unit, and at least part of the outgoing light rays of the imaging light beam at least partially intersect with the central axis of the light homogenization unit.

[0023] In one embodiment, the image generation unit includes a DLP optical engine;

[0024] And / or, the image generating unit comprises 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.

[0025] The utility model further provides a vehicle, comprising a vehicle window and any one of the above head-up display systems, wherein the head-up display system comprises:

[0026] An image generating unit, the image generating unit being used to emit an imaging light beam;

[0027] a light homogenization unit, the light homogenization unit being arranged on the light output path of the image generating unit, and being used for receiving and transmitting the imaging light beam, and separating the imaging light beam into a first light beam and a second light beam, wherein the light paths of the first light beam and the second light beam are isolated from each other;

[0028] A reflecting unit is used to receive the first light beam and the second light beam respectively, and reflect 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.

[0029] The technical solution of the utility model is to provide a light homogenizing unit on the light output path of a single image generating unit, and the light homogenizing unit can separate the light path of the imaging light beam generated by the image generating unit into two parts, a first light beam and a second light beam, from the spatial position, thereby realizing the expansion of the light path of the imaging light source. Then, the first light beam and the second light beam can be respectively reflected to the vehicle window through the reflection unit, and the light paths of the first light beam and the second light beam are isolated from each other. With such a configuration, the head-up display system can form a near virtual image and a far virtual image through a single image generating unit. Compared with the technical solution of providing two image generating units to respectively form a near virtual image and a far virtual image in the related art, the technical solution of the utility model can reduce the number of image generating units in the head-up display system, thereby reducing the volume of the head-up display system and reducing the cost of the head-up display system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of an embodiment of a head-up display system provided by the utility model;

[0032] Figure 2 for Figure 1 Partial structural diagram of the head-up display system;

[0033] Figure 3 for Figure 1 A structural diagram of a first embodiment of a light homogenization part of a light homogenization unit of a head-up display system;

[0034] Figure 4 for Figure 1 A structural diagram of a second embodiment of a light homogenization part of a light homogenization unit of a head-up display system;

[0035] Figure 5 for Figure 4 Another structural schematic diagram of the middle light homogenizing unit;

[0036] Figure 6 for Figure 1 A structural diagram of a third embodiment of a light homogenization part of a light homogenization unit of a head-up display system;

[0037] Figure 7 for Figure 1 A structural diagram of a fourth embodiment of a light homogenization portion of a light homogenization unit of a head-up display system.

[0038] Description of Figure Numbers:

[0039] 100, head-up display system; 10, image generation unit; 20, light homogenization unit; 21, light homogenization part; 211, first light homogenization structure; 211a, first side; 212, second light homogenization structure; 212a, second side; 213, mounting groove; 22, light blocking part; 30, first reflector; 40, second reflector; 50, third reflector; 200, vehicle window.

[0040] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0044] The head-up display system generally includes an image generating unit and a curved reflector. The imaging light beam generated by the image generating unit can be reflected to the vehicle window via the curved reflector to form a virtual image with depth of field at the vehicle window.

[0045] In the related art, in order to enable the head-up display system to display near-view information and far-view information at the same time, the head-up display system is usually provided with two image generation units to form two virtual images with different depths of field at the vehicle window. Since this setting method requires two image generation units to form near virtual images and far virtual images respectively, the head-up display system occupies a large volume and has a high cost.

[0046] The present invention provides a head-up display system 100 .

[0047] See also Figure 1 to Figure 2 In one embodiment of the present utility model, the head-up display system 100 includes:

[0048] An image generating unit 10, wherein the image generating unit 10 is used to emit an imaging light beam, wherein the imaging light beam includes a first light beam and a second light beam;

[0049] A light homogenization unit 20, which is disposed on the light output 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;

[0050] A reflection unit, wherein the reflection unit is used to receive the first light beam and the second light beam respectively, and reflect the first light beam and the second light beam to the vehicle window 200 to form a near virtual image and a far virtual image respectively.

[0051] The technical solution of the present invention is to provide a light homogenizing unit 20 on the light output path of a single image generating unit 10. The light homogenizing unit 20 can separate the light path of the imaging light beam generated by the image generating unit 10 into two parts, the first light beam and the second light beam, from the spatial position, thereby expanding the light path of the imaging light source. Then, the first light beam and the second light beam can be respectively reflected to the vehicle window 200 through the reflecting unit, and the light paths of the first light beam and the second light beam are isolated from each other. With such a configuration, the head-up display system 100 can form a near virtual image and a far virtual image through a single image generating unit 10. Compared with the technical solution of providing two image generating units 10 to respectively form a near virtual image and a far virtual image in the related art, the technical solution of the present invention can reduce the number of image generating units 10 in the head-up display system 100, thereby reducing the volume of the head-up display system 100 and reducing the cost of the head-up display system 100.

[0052] See also Figure 1 and Figure 2 In an embodiment of the present utility model, the light homogenization unit 20 includes:

[0053] a light homogenizing unit 21, the light homogenizing unit 21 being disposed on a light output path of the image generating unit 10 and configured to receive and transmit the imaging light beam; and

[0054] The light blocking portion 22 is arranged on one side of the light homogenizing portion 21, and separates the light homogenizing portion 21 into a first light homogenizing structure 211 and a second light homogenizing structure 212, wherein the first light homogenizing structure 211 is used to transmit part of the imaging light beam and form the first light beam, and the second light homogenizing structure 212 is used to transmit part of the imaging light beam and form the second light beam.

[0055] Among them, the light homogenizing part 21 can be composed of a light homogenizing sheet or a light homogenizing plate that can be set to be transparent, and includes a light entrance surface and a light exit surface that are set in opposite directions. The light entrance surface of the light homogenizing part 21 is set toward the image generation unit 10, and is used to receive the imaging light beam emitted to the light homogenizing part 21, and make the imaging light beam uniformly transmit the light homogenizing part 21, so as to achieve the uniformity of the imaging light beam. The light blocking part 22 is made of an opaque material, and the light blocking part 22 can be the light entrance surface of the light homogenizing part 21, or the light exit surface of the light homogenizing part 21. When the imaging light beam is transmitted to the light blocking part 22, it can be separated into two parts, the first light beam and the second light beam, in terms of spatial position through the light blocking part 22's blocking effect on the light beam, and transmitted to the second reflector 40 and the third reflector 50 respectively.

[0056] See also Figures 2 to 7 In an embodiment of the present utility model, the maximum width of the first light homogenizing structure 211 is not greater than the minimum width of the second light homogenizing structure 212 .

[0057] It is defined that the first light homogenizing structure 211 and the second light homogenizing structure 212 are arranged in sequence along the length direction of the light homogenizing portion 21. The first light homogenizing structure 211 is used to receive the first light beam so that the first light beam becomes uniform within the effective width range of the first light homogenizing structure 211, so as to form a near virtual image through the first light beam, thereby achieving a homogenizing effect on the first light beam through the first light homogenizing structure 211. The second light homogenizing structure 212 is used to receive the second light beam so that the second light beam becomes uniform within the effective width range of the second light homogenizing structure 212, so as to form a far virtual image through the second light beam, thereby achieving a homogenizing effect on the second light beam through the second light homogenizing structure 212. Among them, the homogenizing width of the first light homogenizing structure 211 is smaller than the homogenizing width of the second light homogenizing structure 212.

[0058] Specifically, see Figure 3 , Figure 3 It is a structural schematic diagram of the first embodiment of the light homogenizing unit 21 of the utility model.

[0059] In the first embodiment, the first light homogenizing structure 211 and the second light homogenizing structure 212 are both arranged in a rectangular shape; the first light homogenizing structure 211 and the second light homogenizing structure 212 are arranged on both sides of the light blocking portion 22, and the width of the first light homogenizing structure 211 is smaller than the width of the second light homogenizing structure 212, so that the light homogenizing width of the first light homogenizing structure 211 can be smaller than the light homogenizing width of the second light homogenizing structure 212; such an arrangement can effectively reduce the volume of the first light homogenizing structure 211. This arrangement is also conducive to improving the design flexibility of the light homogenizing portion 21.

[0060] Of course, the technical solution of the utility model is not limited to this, please refer to Figure 4 , Figure 4 It is a structural schematic diagram of the second embodiment of the light homogenizing unit 21 of the present utility model.

[0061] In the second embodiment, the main structure of the first light homogenizing structure 211 is convex, and notches are formed at two ends of the side away from the second light homogenizing structure 212; the second light homogenizing structure 212 is rectangular.

[0062] Specifically, the first light homogenizing structure 211 is formed with a first side 211a away from the second light homogenizing structure 212, and the second light homogenizing structure is formed with a second side 211b on a side away from the first light homogenizing structure 211, and the width of the first side 211a is smaller than the width of the second light homogenizing structure 212, thereby realizing a design in which the light homogenizing width of the first light homogenizing structure 211 is smaller than the light homogenizing width of the second light homogenizing structure 212. In this arrangement, since notches are formed at both ends of the side of the first light homogenizing structure 211 away from the second light homogenizing structure 212, the effect of reducing the light homogenizing portion 21 can be achieved to a certain extent. In addition, the optical path of the imaging light beam emitted from the image generating unit 10 to the light homogenizing portion 21 can also be adjusted in translation within the effective range of the light homogenizing portion 21.

[0063] Of course, the technical solution of the utility model is not limited to this, please refer to Figure 6 Based on the above second embodiment, the present invention proposes a third embodiment of the light homogenizing unit 21.

[0064] In the third embodiment, the first light homogenizing structure 211 is formed with a first side edge 211a away from the second light homogenizing structure 212, and both ends of the first side edge 211a are smoothly transitioned in a direction toward the second light homogenizing structure 212. It should be noted that the smooth transition structure formed at both ends of the first side edge 211a may be Figure 6 The arc edge setting shown may also be a bevel edge setting, or may be set as other linear structures with smooth transitions. The specific implementation method may be set according to actual needs and is not limited here.

[0065] Among them, the width of the first side 211a is smaller than the width of the second light homogenizing structure 212, thereby realizing a design in which the light homogenizing width of the first light homogenizing structure 211 is smaller than the light homogenizing width of the second light homogenizing structure 212, and the technical effect of reducing the light homogenizing portion 21 and allowing the optical path of the imaging light beam to be translated and adjusted within the effective range of the light homogenizing portion 21 can be achieved as in the second embodiment, which will not be elaborated here.

[0066] Of course, the technical solution of the utility model is not limited to this, please refer to Figure 7 Based on the third embodiment described above, the utility model proposes a fourth embodiment of the light homogenizing portion 21. In the fourth embodiment, the main structure of the first light homogenizing structure 211 is arranged in an arc shape, and its width is gradually reduced in the direction away from the second light homogenizing structure 212, thereby realizing a design in which the light homogenizing width of the first light homogenizing structure 211 is smaller than the light homogenizing width of the second light homogenizing structure 212, and the technical effect of reducing the light homogenizing portion 21 and enabling the optical path of the imaging light beam to be adjusted in translation within the effective range of the light homogenizing portion 21 can be achieved as in the second embodiment, which will not be elaborated here.

[0067] See also Figure 5 In an embodiment of the utility model, the light homogenizing portion 21 is further provided with a mounting groove 213, the mounting groove 213 is provided between the first light homogenizing structure 211 and the second light homogenizing structure 212, and the light blocking portion 22 and the mounting groove 213 are plug-fitted.

[0068] Among them, 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 plugged into the mounting groove 213 of the light homogenizing part 21, thereby realizing a fixed connection between the light blocking part 22 and the light homogenizing part 21, and is beneficial to improving the connection stability between the light blocking part 22 and the light homogenizing part 21.

[0069] Of course, the technical solution of the utility model is not limited to this. In some embodiments, the light homogenizing part 21 may not be provided with the slot 213. In this case, the light shielding part 22 may be fixed to the corresponding area on the light homogenizing part 21 by gluing its end portion, so as to achieve the installation and fixation between the light homogenizing part 21 and the light shielding part 22. It should be noted that the light homogenizing part 21 and the light shielding part 22 may also be installed and fixed by other means, and the specific implementation method can be set according to actual needs and is not limited here.

[0070] A side of the first light homogenizing structure 211 away from the second light homogenizing structure 212 forms a first side edge 211a, a side of the second light homogenizing structure 212 away from the first light homogenizing structure 211 forms a second side edge 212a, and a width of the first side edge 211a is smaller than a width of the second side edge 212a.

[0071] See also Figure 1 In one embodiment of the present utility model, the reflection unit includes:

[0072] a first reflector 30, which is disposed downstream of the light homogenizing unit 20, and is used to receive the first light beam and the second light beam, respectively, and reflect the first light beam and the second light beam to the vehicle window 200 to form a near virtual image and a far virtual image, respectively;

[0073] A second reflector 40, which is disposed between the light homogenizing unit 20 and the first reflector 30, and is used to receive the first light beam and reflect the first light beam to the first reflector 30; and

[0074] The third reflector 50 is disposed between the light homogenizing 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 to the first reflector 30 .

[0075] Specifically, after the imaging light beam emitted by the image generating unit 10 is separated into a first light beam and a second light beam by the light homogenizing unit 20, the first light beam is transmitted to the vehicle window 200 through the second reflector 40 and the first reflector 30 in sequence, and the second light beam is transmitted to the vehicle window 200 through the third reflector 50 and the first reflector 30 in sequence.

[0076] In the embodiment of the present utility model, the first reflector 30 is a free-form surface mirror, and the reflective surface of the first reflector 30 is concave;

[0077] And / or, the second reflector 40 is a plane mirror or a free-form mirror;

[0078] And / or, the third reflector 50 is a free-form mirror, and the reflective surface of the third reflector 50 is concave.

[0079] In some embodiments, the first reflector 30 is a free-form mirror, the reflective surface of which faces the vehicle window 200, and the first light beam and the second light beam share the first reflector 30; the second reflector 40 can be set as a plane mirror, and the third reflector 50 is a free-form mirror, specifically, it can be set as a concave mirror. The distance from the second reflector 40 to the light homogenizing unit 20 is less than the distance from the third reflector 50 to the light homogenizing unit 20, and the curvature radius of the second reflector 40 and the third reflector 50 are different, thereby changing the imaging focal length of the first light beam and the second light beam, forming the visual effects of the far focal plane and the near focal plane, so as to form a near virtual image and a far virtual image respectively through the first light beam and the second light beam.

[0080] Among them, by specifically setting the third reflector 50 as a concave mirror, when the second light beam is emitted to the third reflector 50 and reflected to the vehicle window 200 by the third reflector 50, the concave reflector surface can converge the light, so that the second light beam has a better convergence effect, thereby ensuring the imaging quality of the distant virtual image of the head-up display system 100.

[0081] Furthermore, in some embodiments, the first reflector 30, the second reflector 40, and the third reflector 50 can be rotatably arranged, so that the imaging distance of the virtual image displayed by the head-up display system 100 can be adjusted by adjusting the positions of the first reflector 30, the second reflector 40, and the third reflector 50. The rotatable arrangement of the reflector can be achieved by setting a rotation axis.

[0082] See also Figure 1 and Figure 2 In an embodiment of the present utility model, one end of the light blocking portion 22 is arranged on a side of the light homogenizing portion 21 away from the image generating unit 10 , and the other end is extended in a direction away from the image generating unit 10 .

[0083] With such an arrangement, the imaging light beam can be separated into a first light beam and a second light beam, and when they are transmitted toward the second reflector 40 and the third reflector 50 respectively, the light path of the first light beam and the light path of the second light beam are blocked by the light blocking portion 22, thereby avoiding mutual interference between the first light beam and the second light beam, which is beneficial to ensure the normal display of near virtual images and far virtual images.

[0084] In an embodiment of the present invention, the image generation unit 10 is spaced apart from the vehicle window in a height direction and a horizontal direction, and the image generation unit 10 and the light homogenization unit are spaced apart in the horizontal direction.

[0085] It should be noted that since the head-up display system 100 is usually set below the windshield of the vehicle and the installation space of the vehicle in the height direction is limited, the image generation unit 10 and the homogenization unit 20 are arranged at intervals in the horizontal direction, which is beneficial to reducing the size of the head-up display system 100 in the height direction.

[0086] See also Figure 2 In an embodiment of the present utility model, the image generation unit 10 is located on the side of the central axis of the light homogenization unit 20, and at least part of the outgoing light rays of the imaging light beam at least partially intersect with the central axis of the light homogenization unit 20.

[0087] The light-emitting side of the image generating unit 10 is arranged toward the light homogenizing unit 20 , and at least part of the emitted light rays of the imaging light beam are at least partially intersected with the central axis of the light homogenizing unit 20 .

[0088] Specifically, the optical axis of the image generation unit 10 and the central axis of the light homogenization unit 20 can be offset. In addition, at least part of the outgoing light beam of the imaging light beam is arranged to intersect at least part of the central axis of the light homogenization unit 20, so that the imaging light beam can be emitted to the light homogenization unit 20 at a specific angle. Among them, the upward projection angle formed by the image generation unit 10 can adapt to the positional relationship between it and the light homogenization unit 20, which is conducive to reducing the size of the head-up display system 100 in the height direction.

[0089] In an embodiment of the present invention, the image generation unit 10 includes a DLP optical engine.

[0090] In this way, a head-up display system 100 based on DLP (Digital Light Processing) can be realized. The DMD chip of the DLP optical engine includes millions of small aluminum micromirrors, and the rotation angle of the micromirrors can be controlled based on signals to realize the bright and dark states of the light source, thereby ensuring the imaging quality and imaging brightness of the head-up display system 100.

[0091] Of course, the technical solution of the present invention is not limited to this. In some embodiments, the image generation unit 10 can also be based on TFT-LCD (Thin film transistor liquid crystal display, thin film transistor liquid crystal display technology). The specific implementation method can be set according to actual needs and is not limited here.

[0092] In an embodiment of the present invention, the image generating 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 other lenses are made of plastic.

[0093] With such a configuration, the lens combination of the image generating unit 10 can be configured as a glass-plastic hybrid solution. Compared with the technical solution of making all the lenses of the image generating unit 10 adopt glass material, such a configuration can reduce the number of lenses of the image generating unit 10, thereby reducing the overall volume and weight of the image generating unit 10 and reducing the cost of the image generating unit 10.

[0094] The utility model also proposes a vehicle, which includes a vehicle window 200 and a head-up display system 100. The specific structure of the head-up display system 100 refers to the above-mentioned embodiment. Since the vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0095] The display screen of the head-up display system 100 can be reflected to the driver's vision through the vehicle window 200, and form a near virtual image and a far virtual image with different depths of field, and the near virtual image and the far virtual image can be arranged in sequence in directions such as up and down, left and right, etc., so that the near virtual image and the far virtual image can be prevented from blocking each other, thereby ensuring the display effect of the head-up display system 100. In some embodiments, the vehicle window 200 can be a windshield set in front of the driver's seat, and in some embodiments, it can also be a glass set on the side of the vehicle, which is not limited here.

[0096] In some embodiments, the near virtual image of the head-up display system 100 is used to display near-view information, such as the speed and mileage of the vehicle, and the far virtual image is used to display far-view information, such as indication information of external objects or navigation information, etc., which is beneficial to improving the AR fusion effect of the head-up display system 100.

[0097] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A head-up display system, characterized in that: include: An image generating unit, the image generating unit being used to emit an imaging light beam; a light homogenization unit, the light homogenization unit being arranged on the light output path of the image generating unit, and being used for receiving and transmitting the imaging light beam, and separating the imaging light beam into a first light beam and a second light beam, wherein the light paths of the first light beam and the second light beam are isolated from each other; A reflecting unit is used to receive the first light beam and the second light beam respectively, and reflect 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 head-up display system according to claim 1, characterized in that: The light homogenization unit comprises: a light homogenizing unit, the light homogenizing unit being arranged on a light output path of the image generating unit and being used for receiving and transmitting the imaging light beam; and A light blocking portion is arranged on one side of the light evening portion, and separates the light evening portion into a first light evening structure and a second light evening structure, the first light evening structure is used to transmit part of the imaging light beam and form the first light beam, and the second light evening structure is used to transmit part of the imaging light beam and form the second light beam.

3. The head-up display system according to claim 2, characterized in that: The maximum width of the first light homogenizing structure is not greater than the minimum width of the second light homogenizing structure.

4. The head-up display system according to claim 2, characterized in that: One end of the light blocking portion is arranged on a side of the light evenly spaced portion away from the image generating unit, and the other end is extended in a direction away from the image generating unit.

5. The head-up display system according to any one of claims 1 to 4, characterized in that: The reflection unit comprises: a first reflector, which is disposed downstream of the light homogenizing unit and is used to receive the first light beam and the second light beam, respectively, and reflect 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 reflector, the second reflector being disposed between the light homogenizing unit and the first reflector, the second reflector being used to receive the first light beam and reflect the first light beam to the first reflector; and A third reflector is provided between the light homogenizing unit and the first reflector, and is used for receiving the second light beam and reflecting the second light beam to the first reflector.

6. The head-up display system according to claim 5, characterized in that: The first reflector is configured as a free-form surface mirror, and the reflective surface of the first reflector is configured as a concave surface; And / or, the second reflector is configured as a plane mirror or a free-form mirror; And / or, the third reflector is configured as a free-form surface mirror, and the reflective surface of the third reflector is configured as a concave surface.

7. The head-up display system according to any one of claims 1 to 4, characterized in that: The image generation unit is spaced apart from the vehicle window in a height direction and a horizontal direction, and the image generation unit and the light homogenization unit are arranged at an interval in the horizontal direction.

8. The head-up display system according to claim 7, characterized in that: The image generating unit is located on the side of the central axis of the light homogenizing unit, and at least part of the outgoing light rays of the imaging light beam are arranged to at least partly intersect with the central axis of the light homogenizing unit.

9. The head-up display system according to any one of claims 1 to 4, characterized in that: The image generation unit includes a DLP optical engine; And / or, the image generating unit comprises 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.

10. A vehicle, characterized in that: The invention comprises a vehicle window and a head-up display system as claimed in any one of claims 1 to 9.

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