Head-up display, control method of head-up display and vehicle

Abstract

The invention discloses a head-up display, a control method of the head-up display and a vehicle. The head-up display includes at least one image generation unit and at least one optical waveguide. The image generation unit is adapted to be mounted within an instrument panel. At least one part of the optical waveguide extends out of the instrument panel and is located on the inner side of the front windshield, the optical waveguide comprises a substrate, a coupling-in grating and a coupling-out grating, the coupling-in grating and the coupling-out grating are arranged on the substrate, light generated by the image generation unit enters the substrate from the coupling-in grating, and the coupling-out grating is located on the side, away from the front windshield, of the substrate. And the light in the substrate is emitted from the coupling-out grating. By adopting the technical scheme of the invention, not only can the imaging effect of the head-up display be ensured to be better, but also the processing difficulty of the whole vehicle can be reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a head-up display, a control method for the head-up display, and a vehicle. Background Art

[0002] In order to ensure that drivers can drive vehicles more safely and stably, more and more vehicles are equipped with head-up displays. With a head-up display, various types of information such as navigation information, driving information, and environmental information can be superimposed and displayed in the driver's field of vision, thereby avoiding the driver's vision from deviating from the road due to looking down at the information, resulting in dangerous driving consequences. The light of the image source formed by the head-up display device is generally emitted from the bottom of the instrument panel to the front windshield of the vehicle, and then reflected from the front windshield to the human eye, so that the driver can observe the virtual image in front through the front windshield. However, when the light is projected onto the front windshield, it is easy to form two staggered images, that is, ghosting is easy to occur. At the same time, since the front windshield is usually a free-form surface, this curved surface design will cause the light to be distorted during the reflection process, which is easy to cause image distortion.

[0003] In the related art, in order to eliminate the problems of ghosting or distortion of the head-up display on the windshield, a wedge-shaped film is generally added to the windshield glass to change the refraction path of the light through the wedge-shaped design, thereby reducing or eliminating the above-mentioned undesirable imaging phenomenon. However, the angles and shapes of the windshields of different models are different. Embedding a wedge-shaped film in the windshield will undoubtedly increase the design and processing difficulty of the windshield, that is, increase the processing difficulty of the entire vehicle. Summary of the invention

[0004] In view of this, the present application provides a head-up display, a control method for a head-up display, and a vehicle, which can not only ensure a better imaging effect of the head-up display, but also reduce the processing difficulty of the entire vehicle.

[0005] In a first aspect, an embodiment of the present application provides a head-up display, the head-up display comprising at least one image generating unit and at least one optical waveguide;

[0006] The image generation unit is suitable for installation in a dashboard;

[0007] At least a portion of the optical waveguide extends out from the instrument panel and is located on the inner side of the front windshield. The optical waveguide includes a substrate and an in-coupling grating and an out-coupling grating arranged on the substrate. The light generated by the image generation unit is emitted into the substrate from the in-coupling grating. The out-coupling grating is located on a side of the substrate facing away from the front windshield, and the light in the substrate is emitted from the out-coupling grating.

[0008] Optionally, the head-up display further includes at least one driving member, and the driving member is used to drive the image generating unit and / or the optical waveguide to move along the width direction of the instrument panel.

[0009] Optionally, the head-up display comprises a driving member, an image generating unit, an optical waveguide, a first housing and a first connecting member;

[0010] The image generating unit is installed in the first housing, the first housing has a first light exit hole facing the top wall of the instrument panel, and the light generated by the image generating unit is emitted through the first light exit hole;

[0011] The first connecting member is located in the first housing and is connected to the image generating unit and the optical waveguide respectively;

[0012] The driving end of the driving member is connected to the first shell, and the driving member is used to drive the first shell to move along the width direction of the instrument panel.

[0013] Optionally, the head-up display comprises a plurality of the image generating units, one optical waveguide, a plurality of second shells and one driving member;

[0014] The image generating unit is installed in the corresponding second housing, the second housing has a second light emitting hole facing the top wall of the instrument panel, and the light generated by the image generating unit is emitted through the corresponding second light emitting hole;

[0015] The driving end of the driving member is connected to the optical waveguide, and the driving member is used to drive the optical waveguide to move along the width direction of the instrument panel so that the coupling grating of the optical waveguide is aligned with any of the second light exit holes.

[0016] Optionally, the head-up display includes one image generating unit, a plurality of optical waveguides, a third housing and a driving member;

[0017] The image generating unit is installed in the third housing, the third housing has a third light exit hole facing the top wall of the instrument panel, and the light of the image generating unit is emitted through the third light exit hole;

[0018] A plurality of the optical waveguides are arranged side by side in the width direction of the instrument panel;

[0019] The driving end of the driving member is connected to the third shell, and the driving member is used to drive the third shell to move along the width direction of the instrument panel so that the third light exit hole is opposite to the coupling grating of any one of the optical waveguides.

[0020] Optionally, the head-up display further comprises at least one optical element, wherein the optical element is located in the instrument panel, and the light of the image generating unit is emitted to the coupling grating via the optical element.

[0021] Optionally, the portion of the optical waveguide extending from the instrument panel is parallel to the front windshield.

[0022] Optionally, the head-up display further comprises a first support frame, wherein the first support frame is located in the instrument panel and extends along the width direction of the instrument panel;

[0023] One of the first support frame and the light guide plate is provided with a first slide rail, and the other is provided with a first slide groove. Both the first slide rail and the first slide groove extend along the width direction of the instrument panel. The first slide rail is located in the first slide groove, and the driving end of the driving member is connected to the optical waveguide.

[0024] On the other hand, an embodiment of the present application further provides a method for controlling a head-up display, the method for controlling a head-up display being used to control any of the above-mentioned embodiments of the present application, the method comprising:

[0025] Get the first movement instruction;

[0026] Based on the first movement instruction, the driving component is controlled to drive the image generating unit and / or the optical waveguide to move to a first target position.

[0027] On the other hand, an embodiment of the present application further provides a vehicle, comprising a head-up display according to any one of the above-mentioned embodiments of the present application.

[0028] The head-up display provided in the embodiment of the present application includes at least one image generating unit and at least one optical waveguide. The image generating unit is installed in the instrument panel, at least a part of the optical waveguide extends from the instrument panel and is located on the inner side of the front windshield, and the optical waveguide includes a substrate and an in-coupling grating and an out-coupling grating arranged on the substrate. Thus, the light generated by the image generating unit can be emitted to the human eye through the in-coupling grating, the substrate and the out-coupling grating in sequence, and the human eye can see the virtual image formed by the light in front of the vehicle. With such a configuration, the light generated by the image generating unit does not need to be reflected by the front windshield, but is directly reflected by the optical waveguide, thereby avoiding the phenomenon of ghosting or distortion of the imaging caused by the front windshield, that is, the head-up display can have a better imaging effect. At the same time, since there is no need to make any adjustments to the original structure of the front windshield, and only the optical waveguide is added, the processing difficulty of the whole vehicle can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a structural schematic diagram of a head-up display and an instrument panel provided in an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the structure of another head-up display and instrument panel provided in an embodiment of the present application;

[0032] Figure 3 is a schematic diagram of the principle of an optical waveguide in a head-up display provided in an embodiment of the present application;

[0033] Figure 4 is a schematic diagram of imaging at different positions of a head-up display provided by an embodiment of the present application;

[0034] Figure 5 yes Figure 4 A schematic diagram showing a head-up display provided by an embodiment of the present application projecting display contents at different positions is shown;

[0035] Figure 6 is a schematic diagram of another head-up display provided in an embodiment of the present application for imaging at different positions;

[0036] Figure 7 is a schematic diagram of another head-up display provided in an embodiment of the present application for imaging at different positions;

[0037] Figure 8 is a schematic diagram of another head-up display provided in an embodiment of the present application for imaging at different positions;

[0038] Fig. 9 yes Figure 8 A schematic diagram showing a head-up display provided by an embodiment of the present application projecting display contents at different positions is shown;

[0039] Fig.10 It is a structural schematic diagram of another head-up display provided by an embodiment of the present application, in which a pushing member pushes a dustproof plate from a position where the light-exposing through slot is exposed to a position where the light-shielding through slot is closed;

[0040] Fig.11 is a flow chart of a method for controlling a head-up display provided in an embodiment of the present application;

[0041] Fig.12 is a flow chart of another method for controlling a head-up display provided in an embodiment of the present application;

[0042] Fig.13 It is a device block diagram of a head-up display provided in an embodiment of the present application.

[0043] Reference numerals:

[0044] 100, image generation unit; 110, first housing; 120, first connecting member; 130, second housing; 140, third housing; 160, display content; 170, virtual image; 180, fifth housing; 111, first light exit hole; 131, second light exit hole; 141, third light exit hole; 181, fifth light exit hole;

[0045] 200, optical waveguide; 210, substrate; 220, coupling-in grating; 230, coupling-out grating;

[0046] 300, instrument panel; 310, light outlet slot;

[0047] 400, front windshield;

[0048] 500, driving member; 510, output shaft;

[0049] 600, a first support frame;

[0050] 700, lifting parts;

[0051] 800, pusher;

[0052] 900, dustproof plate;

[0053] 1000. controller;

[0054] 1100. Human eye.

[0055] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1The relative relationship of the orientation shown in the figure is used as a reference, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientations. When the product is placed in different postures, the orientation may change, for example, "upper" and "lower" may be interchangeable. Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as those generally understood by those skilled in the art.

[0058] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0059] First, combining Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present application provides a head-up display, which includes at least one image generation unit 100 and at least one optical waveguide 200 .

[0060] The image generation unit 100 is adapted to be installed in the instrument panel 300 .

[0061] At least a portion of the optical waveguide 200 extends from the dashboard 300 and is located on the inner side of the front windshield 400. The optical waveguide 200 includes a substrate 210 and an in-coupling grating 220 and an out-coupling grating 230 disposed on the substrate 210. The light generated by the image generation unit 100 is emitted into the substrate 210 from the in-coupling grating 220. The out-coupling grating 230 is located on the side of the substrate 210 away from the front windshield 400. The light in the substrate 210 is emitted from the out-coupling grating 230. In this way, the light of the image generation unit 100 can be transmitted to the human eye through the optical waveguide 200, and the human eye 1100 can see the virtual image 170 formed by the light in front of the vehicle. It should be noted that the optical waveguide 200 is an optical component that utilizes total reflection of light in a medium. The core of the optical waveguide 200 is to realize lossless transmission of light through a high refractive index transparent substrate 210. The light can be directly transmitted to the human eye 1100 through the in-coupling grating 220 and the out-coupling grating 230. In addition, the optical waveguide 200 can use a two-dimensional pupil expansion technology to expand the field of view and extend the imaging distance, so that the driver can see a wider virtual image, and can also Figure 2 The requirements of human eyes at different heights are met, thus improving the applicability of the head-up display.

[0062] With the head-up display provided in the embodiment of the present application, since the light generated by the image generation unit 100 does not need to be reflected by the front windshield 400, but is directly reflected by the optical waveguide 200, it can avoid the phenomenon of ghosting or distortion caused by the front windshield 400, that is, the head-up display can have a better imaging effect. At the same time, since there is no need to adjust the original structure of the front windshield 400, and only the optical waveguide 200 is added, the processing difficulty and modification cost of the whole vehicle can be reduced.

[0063] The following is combined with Figures 1 to 10 The details and functions of the head-up display provided in the embodiment of the present application are described in more detail.

[0064] In some embodiments, the image generation unit 100 can be composed of display modules such as TFT-LCD (Thin Film Transistor-Liquid Crystal Display) display module, mini-LED (mini-Light-Emitting Diode) display module, OLED (Organic Light-Emitting Diode) display module, micro-LED (micro-Light-Emitting Diode) display module, DLP (Digital Light Processing) projection display module, LBS (Laser Beam Scanning) display module, LCOS (Liquid Crystal on Silicon) display module or QLED (Quantum Dot Light Emitting Diodes) display module.

[0065] like Figure 3As shown, in some embodiments, the substrate 210 can be transparent glass or transparent resin. In some embodiments, the coupling-in grating 220 can be a geometric lens array grating, an etched microstructure grating or a volume holographic grating. The coupling-out grating 230 can be a geometric lens array grating, an etched microstructure grating or a volume holographic grating. It should be understood that the geometric lens array grating is a grating designed based on the principle of geometric optics, and its structure is composed of a plurality of microlenses. The etched microstructure grating is a grating in which a micrometer or nanometer-scale structure is etched on a substrate material by physical or chemical methods. The volume holographic grating is a diffraction optical component made using holographic technology, and interference fringes are formed in the medium by double-beam holographic exposure technology, thereby obtaining a grating structure with a periodic change in refractive index. Among them, compared with the geometric lens array grating and the etched microstructure grating, the volume holographic grating has the characteristics of high diffraction efficiency and low stray light, and has a better imaging effect.

[0066] In some embodiments, the coupling-in grating 220 and the coupling-out grating 230 may be located on the same side of the substrate 210 or on different sides of the substrate 210, for example, Figure 2 and Figure 1 As shown, the coupling grating 220 faces the light exiting surface of the image generating unit 100. Therefore, the position of the coupling grating 220 can be set according to the image generating units 100 at different positions, which can improve the applicability of the optical waveguide 200.

[0067] like Figure 4 As shown, in some embodiments, the head-up display further includes at least one driving member 500, and the driving member 500 is used to drive the image generation unit 100 and / or the optical waveguide 200 to move along the width direction of the instrument panel 300. In this way, the image generation unit 100 and / or the optical waveguide 200 are movably arranged on the vehicle, that is, the imaging position is flexibly adjusted by the driving member 500, for example, the imaging position is adjusted to any field of view in front of the driver, in front of the co-driver or in front of the vehicle, so as to meet different user needs. In some examples, the driving member 500 is suitable for being electrically connected to the controller 1000 of the vehicle, so that signal transmission or command transmission can be performed between the controller 1000 and the driving member 500. It should be noted that the driving member 500 in the embodiment of the present application can be, for example, a driving motor, and the driving motor is suitable for being connected to a power supply unit. It should be noted that the width direction of the instrument panel 300 is parallel to the width direction of the vehicle.

[0068] like Figure 4 and Figure 5As shown, in some embodiments, the head-up display includes a driving member 500, an image generating unit 100, an optical waveguide 200, a first housing 110 and a first connecting member 120. The image generating unit 100 is installed in the first housing 110, for example, the image generating unit 100 can be fixed in the first housing 110 by a fixing member. The first housing 110 has a first light exit hole 111 facing the top wall of the instrument panel 300, and the light generated by the image generating unit 100 is emitted through the first light exit hole 111. The first connecting member 120 is located in the first housing 110 and is connected to the image generating unit 100 and the optical waveguide 200 respectively.

[0069] The driving end of the driving member 500 is connected to the first housing 110, and the driving member 500 is used to drive the first housing 110 to move along the width direction of the instrument panel 300. In this way, when the imaging position needs to be adjusted, the driving member 500 can be started, and the first housing 110 is driven to move through the output shaft 510 of the driving member 500, and then the image generation unit 100 installed in the first housing 110 and the optical waveguide 200 connected to the image generation unit 100 can move synchronously with the driving member 500 and the first housing 110. When the driving member 500 stops rotating, the optical waveguide 200 will stop moving, so as to meet the viewing requirements of different imaging positions.

[0070] like Figure 6 As shown, in some embodiments, the head-up display includes a plurality of image generating units 100 , an optical waveguide 200 , a plurality of second housings 130 , and a driving member 500 .

[0071] The image generating unit 100 is installed in the corresponding second housing 130, for example, the image generating unit 100 is fixed in the second housing 130 by a fixing member. The second housing 130 has a second light emitting hole 131 facing the top wall of the instrument panel 300, and the light generated by the image generating unit 100 is emitted through the corresponding second light emitting hole 131.

[0072] The driving end of the driving member 500 is connected to the optical waveguide 200, and the driving member 500 is used to drive the optical waveguide 200 to move along the width direction of the instrument panel 300, so that the coupling grating 220 of the optical waveguide 200 is aligned with any second light exit hole 131. In this way, when it is necessary to adjust the image position, the driving member 500 can be started, and the optical waveguide 200 is driven to move by the driving member 500. When the optical waveguide 200 moves to a position relative to any second light exit hole 131, the image formed by the light of the image source of the image generation unit 100 corresponding to the optical waveguide 200 can be transmitted to the optical waveguide 200. In some embodiments, a plurality of second housings 130 are spaced and arranged side by side in the width direction of the instrument panel 300. For example, the plurality of second housings 130 can be respectively located at positions corresponding to any position directly in front of the driver, directly in front of the co-driver, or between the driver and the co-driver in the instrument panel 300.

[0073] like Figure 7 As shown, in some embodiments, the head-up display includes an image generating unit 100 , a plurality of optical waveguides 200 , a third housing 140 and a driving member 500 .

[0074] The image generating unit 100 is installed in the third housing 140. The third housing 140 has a third light exit hole 141 facing the top wall of the instrument panel 300. The light of the image generating unit 100 is emitted through the third light exit hole 141. A plurality of optical waveguides 200 are arranged side by side in the width direction of the instrument panel 300.

[0075] The driving end of the driving member 500 is connected to the third housing 140, and the driving member 500 is used to drive the third housing 140 to move along the width direction of the instrument panel 300, so that the third light exit hole 141 is opposite to the coupling grating 220 of any optical waveguide 200. In this way, when the image position needs to be adjusted, the driving member 500 can be started, and the third housing 140 can be driven to move by the driving member 500, so that the image generation unit 100 in the third housing 140 can move synchronously with the third housing 140. In some embodiments, a plurality of optical waveguides 200 are spaced and arranged side by side in the width direction of the instrument panel 300. For example, the portions of the plurality of optical waveguides 200 extending from the instrument panel 300 can be respectively located directly in front of the driver, directly in front of the co-driver, or at any position between the driver and the co-driver.

[0076] like Figure 8 and Fig. 9As shown, in some embodiments, the head-up display includes two or more optical waveguides 200 and two or more image generating units 100, and the optical waveguides 200 correspond to the image generating units 100 one by one. The optical waveguides 200 are arranged side by side in the width direction of the instrument panel 300. For example, the optical waveguides 200 can be respectively located in the instrument panel 300 at positions corresponding to any position directly in front of the driver, directly in front of the co-pilot, or between the driver and the co-pilot. It can be understood that the coupling grating 220 of the optical waveguide 200 is opposite to the light emitting surface of the corresponding image generating unit 100. In this way, one or more image generating units 100 can be turned on according to user needs to meet the viewing needs of one or more users at different positions. In some embodiments, two or more image generating units 100 can be integrated in the same fourth shell (not shown in the figure) or respectively located in the corresponding fifth shell 180. The fourth shell has a fourth light emitting hole facing the top wall of the instrument panel 300, and the light of the image generating unit 100 is emitted through the fourth light emitting hole. The fifth housing 180 has a fifth light exit hole 181 facing the top wall of the instrument panel 300 , and the light of the image generating unit 100 is emitted through the corresponding fifth light exit hole 181 . It should be noted that the fifth housing 180 and the corresponding optical waveguide 200 may also be connected via the first connecting member 120 .

[0077] In some embodiments, the head-up display further includes at least one optical element (not shown in the figure), the optical element is located in the instrument panel 300, and the light of the image generation unit 100 is projected to the coupling grating 220 through the optical element. In some embodiments, the optical element includes at least one plane mirror and / or at least one curved mirror. It should be noted that the specific type of the optical element can be set according to different vehicle models and different imaging effect requirements, so as to improve the application range of the head-up display.

[0078] like Figure 1 As shown, in some embodiments, the portion of the optical waveguide 200 extending from the dashboard 300 is parallel to the front windshield 400. It should be noted that the inclined optical waveguide 200 can save space above the dashboard 300 and improve the utilization of the space inside the vehicle.

[0079] In some embodiments, a light outlet slot 310 is provided on the top wall of the instrument panel 300, and the light outlet slot 310 is provided close to the front windshield glass and extends along the width direction of the instrument panel 300. The light waveguide 200 extends from the light outlet slot 310. Such a configuration can ensure that the light waveguide 200 is close to the front windshield glass, and avoid the light waveguide 200 occupying too much space above the instrument panel 300, thereby further improving the utilization rate of the interior space of the vehicle.

[0080] like Figure 4As shown, in some embodiments, the head-up display further includes a first support frame 600 , which is located in the instrument panel 300 and extends along the width direction of the instrument panel 300 .

[0081] One of the first support frame 600 and the light guide plate is provided with a first slide rail (not shown in the figure), and the other is provided with a first slide groove (not shown in the figure). Both the first slide rail and the first slide groove extend along the width direction of the instrument panel 300. The first slide rail is located in the first slide groove, and the driving end of the driving member 500 is connected to the optical waveguide 200. In this way, the first slide rail can move along the width direction of the instrument panel 300 in the first slide groove, thereby ensuring that the optical waveguide 200 can move smoothly along the width direction of the instrument panel 300, avoiding the coupling grating 220 from deflecting in the non-width direction, thereby ensuring the stability of light propagation, and further ensuring the reliability of imaging of the head-up display.

[0082] like Figure 2 As shown, in some embodiments, the head-up display further includes a lifting member 700, which is connected to the optical waveguide 200, and is used to drive the optical waveguide 200 to retract into the dashboard 300 or to drive at least part of the optical waveguide 200 to extend from the dashboard 300. When the user does not need to use the function of the head-up display, the lifting member 700 drives the optical waveguide 200 to retract into the dashboard 300 to protect the optical waveguide 200, thereby preventing the optical waveguide 200 from being continuously exposed above the dashboard 300 and preventing the optical waveguide 200 from being damaged, thereby extending the service life of the head-up display. It should be noted that the lifting member 700, for example, can be a driving motor that can drive the optical waveguide 200 to move in the telescopic direction or a lifting device that can have a lifting function in the telescopic direction of the optical waveguide 200. The lifting member 700 is suitable for being electrically connected to the controller 1000 , so that signals or commands can be transmitted between the controller 1000 and the lifting member 700 , so that the controller 1000 can flexibly control the position of the lifting member 700 to flexibly adjust the position of the optical waveguide 200 .

[0083] like Fig.10As shown, in some embodiments, the head-up display further includes a dustproof plate 900, which can be movably mounted on the inner side of the top wall of the instrument panel 300, and the dustproof plate 900 can be moved between the slot position exposing the light-outgoing slot 310 and the slot position closing the light-outgoing slot 310. Thus, when the optical waveguide 200 is retracted into the instrument panel 300, the dustproof plate 900 can be moved to the slot position closing the light-outgoing slot 310 in time to protect the optical waveguide 200 and the image generation unit 100 and other devices in the instrument panel 300, thereby extending the service life of the head-up display. In some embodiments, the head-up display further includes a pusher 800, which is mounted on the top of the instrument panel 300, and the pusher 800 is used to push the dustproof plate 900 to move in a direction parallel to the top wall of the instrument panel 300. Thus, the position of the dustproof plate 900 can be adjusted flexibly and conveniently. It should be noted that the pusher 800 can be, for example, a drive motor.

[0084] like Fig.11 and Fig.13 As shown, on the other hand, an embodiment of the present application further provides a method for controlling a head-up display, which can be executed by a controller 1000 on a vehicle, for example, by a vehicle controller 1000. The method for controlling a head-up display is used to control any one of the above-mentioned embodiments of the present application, and the method for controlling a head-up display includes the following steps 101 to 102.

[0085] In step 101 , the controller 1000 obtains a first movement instruction.

[0086] It should be noted that the first movement instruction is the first movement instruction corresponding to the movement operation performed by the user. For example, a button for moving the optical waveguide 200 and / or the image generation unit 100 is displayed on the central control screen. In response to the user's operation of clicking, long pressing or double-clicking the button, the central control screen generates a first movement instruction, and the first movement instruction carries the first target movement direction and the first target movement distance. The central control screen sends the first movement instruction to the controller 1000. In this way, the subsequent adjustment of the moving optical waveguide 200 and / or the image generation unit 100 can be performed in time according to user needs, and then the operation of adjusting the imaging position can be timely performed.

[0087] In step 102 , the controller 1000 controls the driving member 500 to drive the image generating unit 100 and / or the optical waveguide 200 to move to a first target position based on a first movement instruction.

[0088] It should be noted that the controller 1000 is electrically connected to the driver 500. In response to receiving the first movement instruction, the controller 1000 controls the driver 500 to drive the image generation unit 100 and / or the optical waveguide 200 to move from the current position to the first target position according to the first target movement direction and the first target movement distance. Among them, at the first target position, the position of the virtual image formed by the head-up display is located in front of the driver, the front of the co-pilot, or the front position corresponding to any position between the driver and the co-pilot. It should be noted that driving the image generation unit 100 to move may refer to driving the shell corresponding to the image generation unit 100 to move.

[0089] It can be seen from the above that by adopting the control method of the head-up display provided in the embodiment of the present application, the display position of the imaging of the head-up display can be flexibly adjusted according to user needs, thereby meeting the different needs of users and improving the flexibility and practicality of the use of the head-up display.

[0090] like Fig.12 and Fig.13 On the other hand, an embodiment of the present application further provides a method for controlling a head-up display, which can be executed by a controller 1000 on a vehicle, for example, by a vehicle controller 1000. The method for controlling a head-up display is used to control any one of the above-mentioned embodiments of the present application, and the method for controlling a head-up display includes the following steps 201 to 204.

[0091] In step 201 , the controller 1000 obtains a first movement instruction.

[0092] It should be noted that step 201 is the same as step 101, so this application will not elaborate on it here.

[0093] In step 202 , the controller 1000 controls the driving member 500 to drive the image generating unit 100 and / or the optical waveguide 200 to move to a first target position based on a first movement instruction.

[0094] It should be noted that step 202 is the same as step 102, so the embodiment of the present application will not be described in detail here.

[0095] In some examples, the control method of the head-up display provided in the embodiment of the present application further includes: the controller 1000 obtains the display content 160 of the head-up display, generates a second movement instruction based on the content type of the display content 160, and sends the second movement instruction to the driver 500, wherein the second movement instruction is used to instruct the driver 500 to drive the optical waveguide 200 and / or the image generation unit 100 to move to the second target position, and the second target position corresponds to the content type. In some embodiments, the content type includes driving content or entertainment content, and the driving content can be, for example, navigation information, road conditions around the vehicle, vehicle speed, and other information that facilitates the driver's driving. Entertainment content can be, for example, music information, movie information, game information, etc., which are information that non-drivers interact with through entertainment. When the content type is driving content, in the width direction of the instrument panel 300, the distance between the optical waveguide 200 used to display the content 160 and the driver is less than the distance between the optical waveguide 200 and the co-driver, so as to facilitate the driver to obtain driving content and improve driving safety. When the content type is entertainment content, in the width direction of the instrument panel 300, the distance between the optical waveguide 200 for displaying the content 160 and the driver is greater than the distance between the optical waveguide 200 and the co-driver, thereby preventing the driver from being affected by the entertainment information, that is, ensuring the safety of driving, and providing entertainment content for non-driver passengers, thereby improving the user's car experience. In other words, the control method of the head-up display provided in the embodiment of the present application can timely adjust the display position of the virtual image formed by the head-up display according to the display content 160 of the head-up display, thereby improving both driving safety and user experience.

[0096] In step 203 , the controller 1000 controls the lifting member 700 to drive the optical waveguide 200 to retract into the instrument panel 300 based on the retraction instruction.

[0097] The retraction instruction is a retraction instruction corresponding to the retraction operation of the head-up display executed by the user. For example, a button for retracting the optical waveguide 200 is displayed on the central control screen, and the central control screen generates a retraction instruction in response to the user's operation of triggering the button by clicking, long pressing or double-clicking. The central control screen sends the retraction instruction to the controller 1000. Thus, the controller 1000 can timely execute the operation of retracting the optical waveguide 200 into the instrument panel 300 according to user needs, so as to avoid the optical waveguide 200 being exposed to the sun for a long time when not in use, thereby extending the service life of the optical waveguide 200, that is, extending the service life of the head-up display.

[0098] In step 204 , the controller 1000 generates a dustproof instruction in response to the optical waveguide 200 being retracted into the instrument panel 300 , wherein the dustproof instruction is used to instruct the pusher 800 to drive the dustproof plate 900 to move to a position that closes the opening of the light outlet slot 310 .

[0099] In some embodiments, the head-up display further includes a position sensor, which is mounted on the inner side of the top wall of the instrument panel 300. The position sensor is used to detect the top position of the optical waveguide 200. In response to the top of the optical waveguide 200 being lower than the top wall of the instrument panel 300, the position sensor generates a dustproof signal and sends the dustproof signal to the controller 1000. In response to receiving the dustproof signal, the controller 1000 generates a dustproof instruction and sends the dustproof instruction to the pusher 800. In response to receiving the dustproof instruction, the pusher 800 drives the dustproof plate 900 to move to a position that closes the notch of the light outlet slot 310. Such a setting can ensure that the dustproof plate 900 is pushed to move after the optical waveguide 200 has completely entered the instrument panel 300, thereby preventing the optical waveguide 200 from being damaged by the dustproof plate 900, further extending the service life of the optical waveguide 200, that is, further extending the service life of the head-up display.

[0100] On the other hand, the embodiment of the present application further provides a vehicle, the vehicle includes any one of the head-up display described in the above embodiment of the present application. It should be noted that the composition and function of the head-up display in the vehicle are the same as the composition and function of the head-up display provided in the above embodiment of the present application, so the embodiment of the present application is not repeated here. By installing the head-up display in the vehicle, the processing difficulty of the whole vehicle can be reduced, and the head-up display can be ensured to have a better imaging effect.

[0101] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0102] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A head-up display, characterized in that: The head-up display comprises at least one image generation unit (100) and at least one optical waveguide (200); The image generation unit (100) is suitable for being installed in a dashboard (300); At least a portion of the optical waveguide (200) extends out from the dashboard (300) and is located on the inner side of the front windshield (400). The optical waveguide (200) comprises a substrate (210) and an in-coupling grating (220) and an out-coupling grating (230) arranged on the substrate (210). The light generated by the image generation unit (100) is emitted from the in-coupling grating (220) into the substrate (210). The out-coupling grating (230) is located on a side of the substrate (210) facing away from the front windshield (400). The light in the substrate (210) is emitted from the out-coupling grating (230).

2. The head-up display according to claim 1, characterized in that: The head-up display further comprises at least one driving member (500), wherein the driving member (500) is used to drive the image generation unit (100) and / or the optical waveguide (200) to move along the width direction of the instrument panel (300).

3. The head-up display according to claim 2, characterized in that: The head-up display comprises a driving member (500), an image generating unit (100), an optical waveguide (200), a first housing (110) and a first connecting member (120); The image generation unit (100) is installed in the first housing (110), the first housing (110) has a first light exit hole (111) facing the top wall of the instrument panel (300), and the light generated by the image generation unit (100) is emitted through the first light exit hole (111); The first connecting member (120) is located in the first housing (110) and is respectively connected to the image generating unit (100) and the optical waveguide (200); The driving end of the driving member (500) is connected to the first shell (110), and the driving member (500) is used to drive the first shell (110) to move along the width direction of the instrument panel (300).

4. The head-up display according to claim 2, characterized in that: The head-up display comprises a plurality of the image generation units (100), an optical waveguide (200), a plurality of second shells (130) and a driving member (500); The image generation unit (100) is installed in the corresponding second shell (130), the second shell (130) has a second light exit hole (131) facing the top wall of the instrument panel (300), and the light generated by the image generation unit (100) is emitted through the corresponding second light exit hole (131); The driving end of the driving member (500) is connected to the optical waveguide (200), and the driving member (500) is used to drive the optical waveguide (200) to move along the width direction of the instrument panel (300), so that the coupling grating (220) of the optical waveguide (200) is aligned with any of the second light exit holes (131).

5. The head-up display according to claim 2, characterized in that: The head-up display comprises an image generation unit (100), a plurality of optical waveguides (200), a third housing (140) and a driving member (500); The image generation unit (100) is installed in the third housing (140); the third housing (140) has a third light exit hole (141) facing the top wall of the instrument panel (300); and light from the image generation unit (100) is emitted through the third light exit hole (141); A plurality of the optical waveguides (200) are arranged side by side in the width direction of the instrument panel (300); The driving end of the driving member (500) is connected to the third shell (140), and the driving member (500) is used to drive the third shell (140) to move along the width direction of the instrument panel (300) so that the third light output hole (141) is opposite to the coupling grating (220) of any one of the optical waveguides (200).

6. The head-up display according to claim 1, characterized in that: The head-up display further comprises at least one optical element, the optical element being located in the instrument panel (300), and the light of the image generation unit (100) being emitted to the coupling grating (220) via the optical element.

7. The head-up display according to claim 1, characterized in that: The portion of the optical waveguide (200) extending from the dashboard (300) is parallel to the front windshield (400).

8. The head-up display according to claim 2, characterized in that: The head-up display further comprises a first support frame (600), wherein the first support frame (600) is located inside the instrument panel (300) and extends along the width direction of the instrument panel (300); One of the first support frame (600) and the light guide plate is provided with a first slide rail, and the other is provided with a first slide groove. Both the first slide rail and the first slide groove extend along the width direction of the instrument panel (300). The first slide rail is located in the first slide groove. The driving end of the driving member (500) is connected to the optical waveguide (200).

9. A method for controlling a head-up display, characterized in that: The method is used to control a head-up display according to any one of claims 1 to 8, and the method comprises: Get the first movement instruction; Based on the first movement instruction, the driving component (500) is controlled to drive the image generation unit (100) and / or the optical waveguide (200) to move to a first target position.

10. A vehicle, characterized in that: The vehicle comprises a heads-up display as claimed in any one of claims 1 to 8.

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