Head-up display for vehicle and vehicle

Abstract

The present disclosure relates to a head-up display (100) for a vehicle, characterized in that the head-up display (100) has: a screen (102) on which an image can be displayed; a housing (108), the housing (108) having a plurality of walls; an optical system, the optical components of which are arranged on the housing (108), and which is designed to project the image onto a windshield (105) of the vehicle along a beam path of an imaging beam; the optical system has an optical axis (109), at least a portion of the plurality of walls of the housing forming an angle with the optical axis (109) that is greater than an angle with the optical axis (109) that an edge of the imaging beam forms. The disclosure also relates to a vehicle.

Description

Technical Field

[0001] This disclosure relates to a head-up display for a vehicle and the vehicle itself. Background Technology

[0002] Head-up displays (HUDs) are increasingly used in vehicles, projecting information such as navigation and vehicle speed into the driver's line of sight using optical technology. This not only reduces the time the driver's eyes are off the road, significantly reducing driver distraction, lowering the risk of accidents, and improving driving safety, but also provides drivers with a new driving experience.

[0003] A head-up display (HUD) includes a screen and an optical system. The screen displays the projected image, while the optical system includes a first-stage mirror and a second-stage mirror to alter the light path that projects the image onto the screen and to magnify the projected image. The HUD also includes a housing within which the light projecting the image onto the screen is confined; this housing may also be referred to as an optical chamber.

[0004] In head-up display (HUD) applications, stray light is a complex and difficult-to-solve problem. Stray light refers to light rays that are not on the imaging path and enter the driver's field of vision after reflection and scattering, causing glare and other issues that directly affect image clarity and user visual experience, and may even pose safety hazards.

[0005] In traditional head-up display (HUD) designs, the shape of the optical cavity is primarily designed around the optical envelope of the imaging light path to ensure the propagation efficiency of the main ray and the quality of the virtual image. However, this optical cavity structure neglects the dynamic propagation characteristics of stray light. For example, ambient light (such as sunlight) may enter the eye box area through the curved surface of the HUD's dust cover, lens edges, or structural components at different incident angles, forming complex and unintended light paths. Existing solutions lack systematic suppression of stray light paths, leading to increased costs and difficulty in adapting to complex and changing real-world operating conditions.

[0006] Furthermore, in the platform design of multiple models, under the condition of sharing optical cavity, it is also necessary to comprehensively consider and overcome the impact of differences in the optical path envelopes of multiple models. Utility Model Content

[0007] The present disclosure aims to provide a head-up display for a vehicle and a vehicle that overcomes the aforementioned disadvantages.

[0008] This disclosure now proposes a head-up display for a vehicle and a vehicle that overcomes the aforementioned disadvantages and brings other technical effects by adopting the following technical features.

[0009] The first aspect of this disclosure relates to a head-up display for a vehicle, the head-up display having:

[0010] A screen on which images can be displayed;

[0011] A housing having multiple walls;

[0012] An optical system, wherein optical components of the optical system are arranged on the housing, and the optical system is designed to project the image onto the windshield of the vehicle along the optical path of an imaging beam;

[0013] The optical system has an optical axis, and at least a portion of the plurality of walls of the housing forms an angle with the optical axis that is greater than the angle between the edge of the imaging beam and the optical axis.

[0014] In some embodiments, the housing has a first opening and a first channel for the optical path of the imaging beam, the display surface of the screen covers the first opening from the outside of the housing, the first channel is at least partially defined by a first wall, a second wall, a third wall and a fourth wall of the plurality of walls of the housing, the first wall, the second wall, the third wall and the fourth wall surround as peripheral walls to form a first frustum-shaped space with non-parallel upper and lower end faces and thereby constitute the first channel, the first opening is located at the smaller end face of the first frustum-shaped space.

[0015] In some embodiments, the optical components of the optical system include a first-stage mirror, a second opening and a second channel for the imaging beam are formed in the housing, the reflective surface of the first-stage mirror covers the second opening from outside the housing, the second channel is at least partially defined by a fifth, sixth, seventh and eighth wall of the plurality of walls of the housing, the fifth, sixth, seventh and eighth walls surround as peripheral walls to form a second frustum-shaped space with non-parallel upper and lower end faces and thereby constitute the second channel, and the second opening is located at the smaller end face of the second frustum-shaped space.

[0016] In some embodiments, the housing includes a deflection structure to eliminate stray light.

[0017] In some embodiments, the deflection structure includes a first protrusion and a second protrusion protruding from the sixth wall, the first protrusion being located in the region where the sixth wall connects to the fifth wall and connected to the fifth wall, and the second protrusion being located in the region where the sixth wall connects to the seventh wall and connected to the seventh wall.

[0018] In some embodiments, the first protrusion is configured to have a profile that diverges in the optical path direction of the imaging beam from the first-stage mirror outwards, the height of the first protrusion from the sixth wall gradually decreases in the optical path direction of the imaging beam from the first-stage mirror outwards, and the first protrusion extends to the sixth wall on the side away from the fifth wall through a slope that is firstly inclined in the normal direction relative to the sixth wall.

[0019] In some embodiments, the second protrusion is configured to have a profile that diverges in the optical path direction of the imaging beam from the first-stage mirror outwards, the height of the second protrusion from the sixth wall gradually decreases in the optical path direction of the imaging beam from the first-stage mirror outwards, and the second protrusion extends to the sixth wall on the side away from the seventh wall by a second inclined surface that is tilted relative to the normal of the sixth wall.

[0020] In some embodiments, the top side of the second protrusion is connected to the seventh wall via a first rounded portion.

[0021] In some embodiments, the height of the first and second protrusions protruding from the sixth wall gradually decreases to zero in the optical path direction of the imaging beam from the first-stage mirror outward.

[0022] In some embodiments, the optical components of the optical system include a second-stage mirror, the imaging beam being reflected from the first-stage mirror onto the second-stage mirror, the second-stage mirror projecting the imaging beam outward through a third channel of the housing, the third channel being at least partially defined by a ninth wall, a tenth wall and an eleventh wall of the housing, the tenth wall and the eleventh wall being constructed as two opposing walls, the ninth wall being disposed between the tenth wall and the eleventh wall.

[0023] In some embodiments, the ninth wall has a plurality of successively connected surface regions that arch upwards into the third channel at different slopes.

[0024] In some embodiments, the deflection structure includes a slope connecting the ninth wall to the fifth wall.

[0025] In some embodiments, the ninth wall is connected to the eighth wall in a local region, and the deflection structure includes a second rounded portion formed by the connection of the ninth wall and the eighth wall.

[0026] In some embodiments, the surface of at least one wall of the housing has etched microstructures.

[0027] Another aspect of this disclosure relates to a vehicle having a head-up display for a vehicle as described in any of the foregoing contents of this disclosure.

[0028] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings so that the features and advantages of the present disclosure can be readily understood. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments of this disclosure will be briefly described below. The drawings are merely illustrative of some embodiments of this disclosure and are not intended to limit all embodiments of this disclosure to them.

[0030] Figure 1 A side view of the arrangement of a head-up display in a vehicle and its schematic diagram are shown.

[0031] Figure 2 The housing of the head-up display, along with the optical components arranged on the housing, is shown;

[0032] Figure 3 An optical principle diagram is shown;

[0033] Figure 4 The first channel of the head-up display housing is shown in the direction facing the screen display surface;

[0034] Figure 5 In basic terms with Figure 4 The second channel of the housing is shown in the direction opposite to the line of sight;

[0035] Figure 6 A first protrusion protruding from the sixth wall of the shell is shown;

[0036] Figure 7 A second protrusion protruding from the sixth wall of the shell is shown;

[0037] Figure 8 A three-dimensional side view of the housing is shown.

[0038] List of reference numerals

[0039] 100-degree head-up display

[0040] 102 screens

[0041] 103 First-stage reflector

[0042] 104 Second-stage reflector

[0043] 105 windshield

[0044] 106 virtual image

[0045] 107 Eyes

[0046] 108 housing

[0047] 109 optical axes

[0048] 110 First Opening

[0049] 111 First Wall

[0050] 112 Second Wall

[0051] 113 Third Wall

[0052] 114 Fourth Wall

[0053] 115 Second Opening

[0054] 116 Fifth Wall

[0055] 117 Sixth Wall

[0056] 118 Eighth Wall

[0057] 119 Seventh Wall

[0058] 120 First protrusion

[0059] 121 Second protrusion

[0060] 122 First inclined plane

[0061] 123 second slope

[0062] 124 First rounded part

[0063] 125 Ninth Wall

[0064] 126 The Tenth Wall

[0065] 127 Eleventh Wall

[0066] 128 slope

[0067] 129 Second rounded part

[0068] The angle between the wall of the α-shell and the optical axis

[0069] The angle between the edge of the β imaging beam and the optical axis Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0071] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this disclosure may have fewer components, other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0072] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not necessarily indicate a quantity limitation. The terms “comprising” or “including” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0073] Figure 1 A side view and schematic diagram of the head-up display 100 arranged in a vehicle are shown. The head-up display 100 projects information such as navigation and vehicle speed onto the windshield in front of the driver's line of sight using optical technology. This not only reduces the time the driver's eyes are off the road, significantly reducing driver distraction, lowering the risk of accidents, and improving driving safety, but also provides the driver with a new driving experience.

[0074] Stray light can be generated in head-up displays (HUDs). Stray light refers to light that is not part of the imaging path and enters the driver's field of vision after reflection and scattering, causing glare and other issues. This directly affects image clarity and user visual experience, and may even pose safety hazards. For example, ambient light (such as sunlight) may enter the eye box area through reflections from the curved surface of the HUD's dust cover, lens edges, or structural components at different incident angles, forming complex and unexpected light paths.

[0075] Figure 1The image shows a portion of the vehicle, specifically the front area, where the front of the vehicle, steering wheel, and windshield 105 are visible. A head-up display (HUD) 100 is installed in this area, specifically inside the vehicle's center console. The HUD 100 has a screen 102 on which an image is projected sequentially by light onto a first-stage reflector 103 and a second-stage reflector 104 of the HUD 100's optical system. The image is then projected onto the windshield 105 via the second-stage reflector 104. The driver's eyes 107 can see a virtual image 106 of this image through the windshield 105. During this process, the light transmission path... Figure 1 The head-up display 100 is represented by a trapezoidal symbol starting from screen 102 and a triangular symbol from the driver's eyes 107 to the virtual image 106. The head-up display 100 may also have a dust cover, which is installed on the surface of the center console in the area corresponding to the head-up display 100 and is usually a transparent plate, to protect the optical components from external factors such as dust.

[0076] The head-up display 100 also has a housing 108 (such as...) Figure 2 As shown, the housing 108 has multiple walls. Optical components of the optical system of the head-up display 100, such as the first-stage mirror 103 and the second-stage mirror 104, are arranged on the housing. Figure 2 A portion of screen 102 can also be seen, and the image on screen 102 can be projected onto the windshield 105 of the vehicle via an optical system along the optical path of an imaging beam. In some embodiments, the first-stage reflector is, for example, a plane mirror. The second-stage reflector is, for example, a curved mirror.

[0077] Figure 3 An optical schematic diagram is shown, in which the visible optical system has an optical axis 109, which may also be referred to as the axis of symmetry or the centerline of the imaging beam. At least a portion of the plurality of walls of the housing (in Figure 3 The angle α between the image beam (represented by a dashed line) and the optical axis 109 is greater than the edge of the imaging beam (in the image beam). Figure 3 The angle β between the imaging beam (represented by the dashed line) and the optical axis. Compared to the prior art design where the edge of the imaging beam is parallel to the cavity wall, the current design allows stray light reflection paths to deviate from the incident angle of the imaging beam envelope, under which stray light will not enter the human eye along with the imaging beam.

[0078] The following description of the specific structure of the housing is basically carried out along the direction of the imaging beam from the screen to the second-stage mirror. Figure 4 First, the housing 108 is shown in the direction facing the display surface of the screen 102. The housing 108 is configured with a first opening 110 and a first channel for the optical path of the imaging beam, that is, a channel substantially between the screen 102 and the first-stage reflector 103. Figure 4 In this configuration, the first channel is located substantially at the bottom right of the housing. The display surface of the screen 102 covers the first opening 110 from the outside of the housing 108, thus projecting the image on the screen into the housing 108 through the first opening 110. The first channel is at least partially defined by a first wall 111, a second wall 112, a third wall 113, and a fourth wall 114 of the plurality of walls of the housing 108. The first wall 111, the second wall 112, the third wall 113, and the fourth wall 114, as peripheral walls, enclose a first frustum-shaped space with non-parallel upper and lower end faces, thereby constituting the first channel. The first opening 110 is located at the smaller end face of the first frustum-shaped space. Figure 4 In the middle, the first wall 111 and the third wall 113 are vertically opposite each other, and the second wall 112 and the fourth wall 114 are horizontally opposite each other. In the direction from the screen 102 into the housing, that is, from... Figure 4 The first opening 110 is perpendicular to the direction of the paper towards the observer, and the size of the third wall 113 is smaller than the size of the first wall 111, so that the upper and lower end faces of the first frustum-shaped space formed by these four walls as peripheral walls are not parallel. The first opening 110 is located at the smaller end face of the first frustum-shaped space, so that the first frustum-shaped space has a shape that diffuses from the first opening 110 into the interior of the shell 108.

[0079] Figure 5 In basic terms with Figure 4 The housing 108 is shown in a direction opposite to the line of sight. In this view, it can be seen from... Figure 4 Looking again from the opposite direction, the first opening 110, the first wall 111, and the second wall 112 are visible. The housing 108 is configured with a second opening 115 and a second channel for the optical path of the imaging beam. The reflective surface of the first-stage mirror 103 covers the second opening 115 from the outside of the housing 108, thus the second channel is essentially the channel of the housing 108 located between the first-stage mirror 103 and the second-stage mirror 104. The second channel is at least partially defined by the fifth wall 116, the sixth wall 117, the seventh wall 119, and the eighth wall 118 of the plurality of walls of the housing 108. The sixth wall 117 is here configured as a wall extending obliquely upward from the first wall 111. The fifth wall 116, the sixth wall 117, the seventh wall 119, and the eighth wall 118, as peripheral walls, enclose a second frustum-shaped space with non-parallel upper and lower end faces, thereby constituting the second channel, with the second opening 115 located at the smaller end face of the second frustum-shaped space. Therefore, the second frustum-shaped space also has a shape that diffuses in the optical path direction of the imaging beam.

[0080] The housing 108 also includes a deflection structure to eliminate stray light, thereby further enhancing the stray light elimination effect.

[0081] The deflection structure includes a first protrusion 120 and a second protrusion 121 protruding from the sixth wall 117. Figure 6 The image shows a view from the second opening 115 of the housing 108 into the interior of the housing 108, where the entire first protrusion 120 is clearly visible. The first protrusion 120 is located in the region where the sixth wall 117 connects to the fifth wall 116 and is connected to the fifth wall 116. Figure 7 The image shows a view from the second opening 115 of the housing 108 into the interior of the housing 108, where the entirety of the second protrusion 121 can be clearly seen. The second protrusion 121 is located in the region where the sixth wall 117 connects to the seventh wall 119 and is connected to the seventh wall 119.

[0082] The first protrusion 120 is configured to have a profile that diverges in the optical path direction of the imaging beam from the first-stage mirror outwards. For example, the first protrusion 120 has a triangular cross-section and is arranged to extend from one end of the triangle to its opposite side in the optical path direction. The height of the first protrusion 120 protruding from the sixth wall 117 gradually decreases in the optical path direction of the imaging beam from the first-stage mirror outwards. Figure 6 As shown, the first protrusion 120 is essentially a modified triangular prism. The first protrusion 120 extends to the sixth wall 117 on the side away from the fifth wall 116 via a first inclined surface 122 that is normally inclined relative to the sixth wall 117.

[0083] Figure 7 As can be seen, the second protrusion 121 is configured to have a profile that diverges in the optical path direction of the imaging beam from the first-stage mirror outwards. The height of the second protrusion 121 protruding from the sixth wall 117 gradually decreases in the optical path direction of the imaging beam from the first-stage mirror outwards. The second protrusion 121 extends to the sixth wall 117 on the side away from the seventh wall 119 via a second inclined surface 123 that is normally inclined relative to the sixth wall 117. The second protrusion 121 has a similar structure to the first protrusion 120, except that the tip of the second protrusion 121 is closer to the second opening of the housing 108 than the first protrusion 120, so that it no longer has the same tip as the first protrusion 120; rather, it can be said that the tip of its triangular structure is truncated. The top side of the second protrusion 121 is connected to the seventh wall 119 via a first rounded portion 124.

[0084] Depend on Figure 6 and Figure 7As can be seen, the height of the first protrusion 120 and the second protrusion 121 protruding from the sixth wall 117 gradually decreases to zero in the direction of the imaging beam outward from the first-stage mirror. That is, in this direction, the first protrusion 120 and the second protrusion 121 converge into the sixth wall 117 at an angle.

[0085] The angle between the sixth wall 117 and the third wall is an acute angle, and the larger end face of the first frustum-shaped space is located in the extension surface of the sixth wall 117, such as... Figure 6 and Figure 7 As shown

[0086] The imaging beam is then reflected from the first-stage mirror 103 to the second-stage mirror 104, which then projects the imaging beam outward through the third channel of the housing 108. The third channel is at least partially defined by the ninth wall 125, tenth wall 126, and eleventh wall 27 of the housing, as shown below. Figure 8 As shown, Figure 8 A side perspective view of housing 108 is shown. Compared to the first and second channels, the third channel, defined by the ninth wall 125, tenth wall 126, and eleventh wall 27 of housing 108, is open on one side because this side is covered by a dustproof panel. The tenth wall 126 and eleventh wall 27 are constructed as two opposing walls, with the ninth wall 125 disposed between them. The ninth wall 125 is constructed to extend substantially obliquely upward from the sixth wall 117.

[0087] like Figure 8 As shown, the ninth wall 125 has multiple adjacent surface regions that arch upwards at different slopes into the third channel. The larger end face of the second frustum-shaped space constituting the second channel is located in the extended surface of the ninth wall 125.

[0088] The deflection structure includes a slope 128 connecting the ninth wall 125 and the fifth wall 116. If stray light emanating from the surface coincides with the imaging light path, it will result in stray light being observable within the eye box. By changing the incident angle of the stray light at that location through the slope 128, the reflection path of the stray light is deviated from the imaging light path, thus preventing it from entering the eye box and being seen by the human eye.

[0089] The ninth wall 125 is connected to the eighth wall 118 in a local area, and the deflection structure includes a second rounded portion 129 formed by the connection of the ninth wall 125 and the eighth wall 118. This can be achieved... Figure 5 As can be clearly seen, the second rounded portion 129 can cut off the reflection path of stray light at this position, preventing stray light from being reflected through the shell and entering the human eye, thereby achieving the purpose of eliminating stray light.

[0090] Furthermore, etched microstructures can be formed on the surface of at least one wall of the housing 108 to increase scattering loss by creating a rough surface. This is particularly suitable for complex geometries.

[0091] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure.

Claims

1. A head-up display (100) for a vehicle, characterized by The head-up display (100) has: A screen (102) on which images can be displayed; A housing (108) having a plurality of walls; An optical system, wherein the optical components of the optical system are arranged on the housing (108), and the optical system is designed to project the image onto the windshield (105) of the vehicle along the optical path of the imaging beam; The optical system has an optical axis (109), and at least a portion of the plurality of walls of the housing forms an angle (α) with the optical axis (109) greater than the angle (β) between the edge of the imaging beam and the optical axis (109).

2. The head-up display (100) for a vehicle according to claim 1, characterized in that The housing (108) is configured with a first opening (110) and a first channel for the optical path of the imaging beam. The display surface of the screen (102) covers the first opening (110) from the outside of the housing (108). The first channel is defined at least partially by a first wall (111), a second wall (112), a third wall (113), and a fourth wall (114) of the plurality of walls of the housing (108). The first wall (111), the second wall (112), the third wall (113), and the fourth wall (114) serve as peripheral walls to surround a first frustum-shaped space with non-parallel upper and lower end faces, thereby constituting the first channel. The first opening (110) is located at the smaller end face of the first frustum-shaped space.

3. The head-up display (100) for a vehicle according to claim 2, characterized in that The optical components of the optical system include a first-stage mirror (103), the housing (108) having a second opening (115) and a second channel for the optical path of the imaging beam, the reflective surface of the first-stage mirror (103) covering the second opening (115) from the outside of the housing (108), the second channel being at least partially defined by a fifth wall (116), a sixth wall (117), a seventh wall (119) and an eighth wall (118) of the plurality of walls of the housing (108), the fifth wall (116), the sixth wall (117), the seventh wall (119) and the eighth wall (118) forming a second frustum-shaped space with non-parallel upper and lower end faces as peripheral walls and thus constituting the second channel, the second opening (115) being located at the smaller end face of the second frustum-shaped space.

4. The head-up display (100) for a vehicle according to claim 3, characterized in that The housing (108) includes a deflection structure to eliminate stray light.

5. The head-up display (100) for a vehicle according to claim 4, characterized in that, The deflection structure includes a first protrusion (120) and a second protrusion (121) protruding from the sixth wall (117), the first protrusion (120) being located in the region where the sixth wall (117) connects to the fifth wall and is connected to the fifth wall, and the second protrusion (121) being located in the region where the sixth wall (117) connects to the seventh wall (119) and is connected to the seventh wall (119).

6. The head-up display (100) for a vehicle according to claim 5, characterized in that The first protrusion (120) is configured to have a profile that diverges in the optical path direction of the imaging beam from the first-stage mirror (103) outward. The height of the first protrusion (120) protruding from the sixth wall (117) gradually decreases in the optical path direction of the imaging beam from the first-stage mirror (103) outward. The first protrusion (120) extends to the sixth wall (117) on the side away from the fifth wall through a first inclined surface (122) that is inclined in the normal direction relative to the sixth wall (117).

7. The head-up display (100) for a vehicle according to claim 5, characterized in that The second protrusion (121) is configured to have a profile that diverges in the optical path direction of the imaging beam from the first-stage mirror (103) outward. The height of the second protrusion (121) protruding from the sixth wall (117) gradually decreases in the optical path direction of the imaging beam from the first-stage mirror (103) outward. The second protrusion (121) extends to the sixth wall (117) on the side away from the seventh wall (119) through a second inclined surface (123) that is inclined in the normal direction relative to the sixth wall (117).

8. The head-up display (100) for a vehicle according to claim 7, characterized in that The top side of the second protrusion (121) is connected to the seventh wall (119) via the first rounded portion (124).

9. The head-up display (100) for a vehicle according to claim 5, characterized in that, The height of the first protrusion (120) and the second protrusion (121) protruding from the sixth wall (117) gradually decreases to zero in the optical path direction of the imaging beam from the first-stage mirror (103) outward.

10. The head-up display (100) for a vehicle according to claim 4, characterized in that, The optical components of the optical system include a second-stage mirror (104). The imaging beam is reflected from the first-stage mirror (103) onto the second-stage mirror (104). The second-stage mirror (104) projects the imaging beam outward through a third channel of the housing (108). The third channel is at least partially defined by the ninth wall (125), tenth wall (126), and eleventh wall (127) of the housing (108). The tenth wall (126) and eleventh wall (127) are constructed as two opposing walls. The ninth wall (125) is disposed between the tenth wall (126) and eleventh wall (127).

11. The head-up display (100) for a vehicle according to claim 10, characterized in that The ninth wall (125) has multiple adjacent surface areas that arch upwards at different inclines into the third channel.

12. The head-up display (100) for a vehicle according to claim 11, characterized in that The deflection structure includes a slope (128) that connects the ninth wall (125) to the fifth wall (116).

13. The head-up display (100) for a vehicle according to claim 11, characterized in that, The ninth wall (125) is connected to the eighth wall (118) in a local area, and the deflection structure includes a second rounded portion (129) formed by the connection of the ninth wall (125) and the eighth wall (118).

14. The head-up display (100) for a vehicle according to claim 1, characterized in that, The surface of at least one wall of the housing (108) has an etched microstructure.

15. A vehicle characterized by comprising: The vehicle has a head-up display (100) for a vehicle according to any one of claims 1-14.

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