Display system and head-up display device

Abstract

The utility model provides a display system and a head-up display device. The display system at least comprises an image generator, a window module and a focusing module. In the optical axis direction of the display system, the window module is located on the side, close to the human eyes, of the image generator and used for transmitting light rays emitted by the image generator to the focusing module, and the focusing module is used for focusing the received light rays to the human eyes; the display system further comprises an adjusting module, when the display system is in a non-working state, the adjusting module and the focusing module are distributed in the optical axis direction of the display system, and when the image generator is in a non-working state, the adjusting module can weaken the intensity of light transmitted to the focusing module, so that the glare intensity of the display system is effectively reduced, and the display effect is improved. When the display system is used in the automobile environment, the influence on the sight of a driver or a passenger can be reduced by reducing the glare intensity of the display system, and the safety in the driving process is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of virtual image display, in particular to a display system and a head-up display device. BACKGROUND

[0002] The display device usually comprises an image source module, an optical imaging module and a view window, the image source module serves as a light source of the display device to generate an image of virtual information, the view window is used to transmit the image generated by the image source module to the optical imaging module through reflection, refraction, polarization and other processes, and the optical imaging module is used to focus the received light to the human eye, so that the image of virtual information is imaged at a specific distance in front of the human eye.

[0003] When the external light source (such as sunlight) irradiates on the display device, especially when the display device is in a non-working state, the light of the external light source will penetrate the view window to reach the optical imaging module and finally be focused at the human eye, causing glare problem and reducing the user experience of the viewer, when the display system is used in the automobile environment, the glare problem will affect the line of sight of the driver or passenger, which exists a safety hazard.

[0004] Therefore, how to weaken the glare generated by the display device when the display device is in a non-working state is an important problem to be solved in the field. UTILITY MODEL CONTENT

[0005] In view of this, the present application provides a display system and a head-up display device, which can weaken the glare generated by the display device and improve the user experience of the viewer.

[0006] The first aspect of the present application provides a display system, which at least comprises an image generator, a view window module and a focusing module; along the optical axis direction of the display system, the view window module is located on the side of the image generator close to the human eye, the view window module is used to transmit the light emitted by the image generator to the focusing module, and the focusing module is used to focus the received light to the human eye; the display system further comprises an adjusting module, when the image generator is in a non-working state, the adjusting module is distributed along the optical axis direction of the display system with the focusing module, and when the image generator is in a non-working state, the adjusting module is used to weaken the intensity of the light of the external environment light propagating to the focusing module.

[0007] In the present application, the adjusting module can weaken the intensity of the light propagating to the focusing module, thereby effectively reducing the glare intensity of the display system to improve the user experience of the viewer, when the display system is used in the automobile environment, reducing the glare intensity of the display system can reduce the influence on the line of sight of the driver or passenger, thereby improving the safety during driving.

[0008] In a possible design, the adjusting module is a diffuser, which can scatter the light penetrating itself.

[0009] In the present application, the light dispersing member can scatter the light penetrating through itself, so as to reduce the intensity of the light reflected by the focusing module and propagated to the human eye, and further reduce the glare intensity of the display system.

[0010] In a possible design, the light dispersing member is a light dispersing sheet.

[0011] In the present application, the light dispersing member is a light dispersing sheet, which can reduce the cost of the light dispersing member, and further reduce the cost of the display system and the head-up display device.

[0012] In a possible design, the light dispersing member is an electrically controlled liquid crystal glass, and the display system further includes a first power supply; when the image generator is in the working state, the electrically controlled liquid crystal glass is connected to the first power supply, and the electrically controlled liquid crystal glass is in a non-dispersing state; when the image generator is in the non-working state, the electrically controlled liquid crystal glass is disconnected from the first power supply, and the electrically controlled liquid crystal glass is in a dispersing state.

[0013] In the present application, only the power-on or power-off of the electrically controlled liquid crystal glass needs to be controlled to realize the switching between the two states, which simplifies the operation difficulty of the state switching of the light dispersing member, and further shortens the time for switching between the working state and the non-working state of the display system.

[0014] In a possible design, the adjusting module is a light blocking member, which can hinder at least part of the light from penetrating through itself and propagating to the focusing module.

[0015] In the present application, the light blocking member can hinder at least part of the light from penetrating through itself and propagating to the focusing module, that is, the intensity of the light propagating to the focusing module is weakened, so as to reduce the intensity of the light reflected by the focusing module and propagated to the human eye, and further reduce the glare intensity of the display system.

[0016] In a possible design, the light blocking member is an electrochromic glass, and the display system further includes a third power supply; when the image generator is in the working state, the electrochromic glass is connected to the third power supply, and the electrochromic glass is in a light shielding state; when the image generator is in the non-working state, the electrochromic glass is disconnected from the third power supply, and the electrochromic glass is in a light transmitting state.

[0017] In the present application, only the power-on or power-off or the positive or negative of the current of the electrochromic glass needs to be controlled to realize the switching between the two states, which simplifies the operation difficulty of the state switching of the light blocking member, and further shortens the time for switching between the working state and the non-working state of the display system.

[0018] In a possible design, the light blocking member is a light filter.

[0019] In the present application, the light filter can selectively transmit or block light in a specific wavelength range, thereby selectively improving the light blocking effect of the light blocking member. In addition, the light blocking member is a light filter, which can adjust the wavelength of the light emitted by the image generator, so that the light emitted by the image generator can be transmitted through the light filter and the viewing window module, reflected by the focusing module and focused on the human eye. That is, when the light blocking member is a light filter, the image generator does not need to be disassembled when switching from a non-working state to a working state, thereby simplifying the operation of the display system and the head-up display device. At the same time, the light filter can also reduce glare during the operation of the display system, thereby improving the user experience of the display system and the head-up display device.

[0020] In a possible design, the light blocking member is a light curtain, and the display system further includes a storage unit connected with the light curtain, the storage unit being capable of rolling up or opening the light curtain; the storage unit at least includes a first motor, one end of the light curtain being connected with an output shaft of the first motor.

[0021] In the present application, when the image generator is in a working state, the storage unit can roll up the light curtain, thereby canceling the shielding of the viewing window module, so that the light emitted by the image generator can be reflected by the focusing module and penetrate the viewing window module to reach the human eye, thereby improving the imaging effect of the display system and improving the user experience of the viewer. When the image generator is in a non-working state, the storage unit can open the light curtain, and the light curtain can shield the viewing window module, thereby reducing the light from the external environment entering the human eye and generating glare. The switching of the light curtain between the opened and rolled-up states can reduce the influence of the light curtain on the imaging effect of the display system while reducing the glare of the display system, thereby improving the user experience of the viewer. By rolling up or opening the light curtain through the storage unit, the switching difficulty of the light curtain between the two states is reduced, thereby shortening the switching time.

[0022] When the light curtain is directly connected with the output shaft, the structure of the storage unit is simplified, the cost of the storage unit is reduced, and the size of the storage unit is reduced. When the light curtain is indirectly connected with the output shaft through the roller, the risk of damage to the light curtain during the opening or rolling-up process is reduced, thereby prolonging the service life of the light curtain.

[0023] In a possible design, along the optical axis direction of the display system, the adjusting module is located on the side of the viewing window module away from the focusing module, or the adjusting module is located between the viewing window module and the focusing module.

[0024] In the present application, along the optical axis direction of the display system, the adjusting module is located on the side of the viewing window module away from the focusing module, which can facilitate the installation, disassembly and replacement of the adjusting module. Along the optical axis direction of the display system, the adjusting module is located between the viewing window module and the focusing module, thereby reducing the risk of damage to the adjusting module by external force, thereby facilitating the prolongation of the service life of the adjusting module.

[0025] In one possible design, the adjustment module and the window module are connected by one or more of the following methods: magnetic fixation, snap-fit ​​fixation, and fastener fixation.

[0026] In this application, the adjustment module and the window module are magnetically fixed, facilitating the installation and disassembly of the adjustment module and reducing the difficulty of installation and disassembly. The snap-fit ​​fixing of the adjustment module and the window module improves the accuracy of the adjustment module's installation position on the window module, which is beneficial for improving the filtering effect. The fastener fixing of the adjustment module and the window module reduces the connection cost between them, and also helps to reduce the processing cost of the adjustment module and the window module.

[0027] A second aspect of this application provides a display system, which includes at least an image generator, a window module, and a focusing module. Along the optical axis of the display system, the window module is located on the side of the image generator closer to the human eye. The window module is used to transmit the light emitted by the image generator to the focusing module, and the focusing module is used to focus the received light onto the human eye. The display system also includes an adjustment module connected to the focusing module. The adjustment module can drive the focusing module to move to increase or decrease the angle of the ambient light reflected by the focusing module.

[0028] In this application, the adjustment module can drive the focusing module to move, thereby changing the angle of the light reflected by the focusing module, reducing the risk of the focusing module reflecting light to the human eye, and thus reducing the glare intensity of the display system.

[0029] In one possible design, when the image generator is in operation, the angle of incidence of ambient light on the surface of the focusing module is the first reflection angle, and when the image generator is not in operation, the angle of incidence of ambient light on the surface of the focusing module is the second reflection angle, and the first reflection angle is smaller than the second reflection angle.

[0030] In this application, the first incident angle is smaller than the second incident angle, thereby enabling the light emitted by the image generator to be accurately focused on the human eye when the display system is in working state, and the ambient light is reflected outside the range observable by the human eye when the display system is not in working state, thus reducing the glare of the display system when it is not in working state.

[0031] In one possible design, the adjustment module is directly connected to the focusing module.

[0032] In this application, the adjustment module used as the drive motor is directly connected to the focusing module to simplify the structure of the display system.

[0033] In one possible design, the display system includes a substrate, with a window module and a focus module mounted on the substrate. An adjustment module is indirectly connected to the focus module through the substrate, and the adjustment module can drive the window module and the focus module to move synchronously.

[0034] In this application, the adjustment module is connected to the substrate, so that the adjustment module can simultaneously drive the window module and the focusing module to rotate synchronously. This improves the accuracy of the relative position of the window module and the focusing module before and after rotation, reduces the risk that the angle between the window module and the focusing module will be incorrect from the preset angle when the display system works again, thereby reducing the risk of unclear or distorted imaging of the display system, and thus improving the imaging effect of the display system, so as to enhance the viewing experience of the viewer.

[0035] In one possible design, the display system includes a substrate, on which an image generator, a window module, and a focusing module are mounted. An adjustment module is indirectly connected to the focusing module through the substrate, and the adjustment module can drive the image generator, the window module, and the focusing module to move synchronously.

[0036] In this application, the adjustment module can simultaneously drive the image generator, the window module, and the focusing module to move synchronously, thereby improving the accuracy of the relative positions of the image generator, the window module, and the focusing module before and after rotation, further enhancing the imaging effect of the display system, and thus further improving the viewing experience of the viewer.

[0037] A third aspect of this application provides a head-up display device, which includes a device body and a display system as described in any of the above claims, wherein the display system is mounted on the device body.

[0038] In this application, when the display system is not in operation, the adjustment module and the focusing module are distributed along the optical axis of the display system. When the image generator is not in operation, the adjustment module can reduce the intensity of the light propagating to the focusing module, thereby effectively reducing the glare intensity of the display system and improving the user experience. When the display system is used in an automotive environment, reducing the glare intensity of the display system can reduce the impact on the driver's or passenger's vision, thereby improving safety during driving. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of a head-up display device in one embodiment;

[0041] Figure 2 This is a schematic diagram of the optical path of the system in one embodiment;

[0042] Figure 3 This is a schematic diagram of the optical path when the display system generates glare.

[0043] Figure 4 An exploded view of the structure of the display system provided in this application in one embodiment;

[0044] Figure 5 This is a schematic diagram of the optical path of the display system when the adjustment module is a diffuser.

[0045] Figure 6 This is a schematic diagram showing the installation position of the electro-controlled liquid crystal glass in one embodiment;

[0046] Figure 7 This is a schematic diagram of the electrical connection structure of an electronically controlled liquid crystal glass in one embodiment;

[0047] Figure 8 This is a schematic diagram of the optical path of the display system when the adjustment module is a light-blocking component;

[0048] Figure 9 A schematic diagram of the display system when the light-blocking component is a light-blocking curtain;

[0049] Figure 10 This is a schematic diagram showing the installation position of the blackout curtain in one embodiment;

[0050] Figure 11 This is a schematic diagram of the structure of the storage unit in one embodiment;

[0051] Figure 12 This is a schematic diagram of the structure of the storage unit in another embodiment;

[0052] Figure 13 A schematic diagram showing the structure of the system in another embodiment;

[0053] Figure 14 To show a structural schematic diagram of the system in yet another embodiment;

[0054] Figure 15 This is a schematic diagram of the electrical connection structure of electrochromic glass in one embodiment;

[0055] Figure 16 This is a schematic diagram showing the installation position of the filter;

[0056] Figure 17 To show a structural schematic diagram of the system in yet another embodiment;

[0057] Figure 18 for Figure 17Optical path diagram after the adjustment module in the middle is rotated;

[0058] Figure 19 To show a structural schematic diagram of the system in yet another embodiment;

[0059] Figure 20 To show a structural schematic diagram of the system in yet another embodiment;

[0060] Figure 21 This is a schematic diagram showing the installation location of the image generator in one embodiment;

[0061] Figure 22 This is a schematic diagram of the installation location of the image generator in another embodiment.

[0062] Figure label:

[0063] 01-Windshield; 02-Human eye; 03-Display system; 031-Image source module; 032-Optical imaging module; 033-Viewing window; 034-Anti-reflective coating;

[0064] 1-Image generator; 2-Window module; 3-Focus module; 4-Adjustment module; 5-First power supply; 6-Second power supply; 7-Storage unit; 71-First motor; 711-Output shaft; 72-Roller; 8-Third power supply; 9-Base. Detailed Implementation

[0065] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0066] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0067] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0068] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0069] In recent years, the continuous launch of head-up display (HUD) devices with dotted line display functionality has garnered widespread attention in the market, sparking heated discussions about display-related technology products. An HUD device includes a main body and a display system mounted on the main body. Common HUD devices include AR glasses, VR glasses, smart helmets, automobiles, and other devices with display functions. This application does not impose any special limitations on the specific type, structure, or application of the HUD device.

[0070] Figure 1 This is a schematic diagram of a head-up display device in one embodiment, as shown below. Figure 1 As shown, taking a car as an example, the car is equipped with a display system, which can be set on the dashboard, display screen, or other locations. The display system is used to emit virtual information such as text, images, videos, and 3D models, including road conditions, navigation, and vehicle information, in the form of light. The light emitted by the display system is directly focused on the human eye, or the light emitted by the display system is reflected by the windshield 01 and focused on the human eye, so that the virtual information is imaged at a specific distance in front of the human eye, so that the driver or passengers can receive information while driving, reducing the risk of safety problems caused by the driver or passengers looking down.

[0071] Figure 2 This is a schematic diagram of the optical path of the system in one embodiment. For example... Figure 2 As shown, the display system 03 typically includes an image source module 031, an optical imaging module 032, and a viewing window 033. The image source module 031 serves as the light source for the display system 03 to generate images of virtual information. The viewing window 033 transmits the image generated by the image source module 031 to the optical imaging module 032 through processes such as reflection, refraction, and polarization. The optical imaging module 032 reflects the received light, allowing the light to pass through the viewing window 033 and be focused along the optical axis of the display system 03 onto the human eye 02, thereby imaging the virtual information at a specific distance in front of the human eye 02.

[0072] Figure 3 This is a schematic diagram of the optical path when the display system generates glare. When the display system 03 is in a non-operating state, that is, when the image source module 031 is not outputting light, as shown... Figure 3 As shown, at least a portion of the ambient light from the outside world will pass through the window 033 to the optical imaging module 032. Under the reflection of the optical imaging module 032, the ambient light will eventually reach the human eye 02 and even be focused on by the human eye 02, resulting in the human eye 02 receiving stronger light, affecting the human eye 02's ability to see other objects around it, causing glare problems, and thus posing a risk of damage to the human eye 02 or even other safety problems.

[0073] To reduce the glare intensity of a display system, embodiments of this application provide a display system. Figure 4 To display an exploded view of the system's structure. For example... Figure 4 As shown, the display system 03 includes at least an image generator 1, a window module 2, and a focusing module 3. Along the optical axis of the display system 03, the window module 2 is located on the side of the focusing module 3 closer to the human eye 02. The window module 2 is used to transmit the light emitted by the image generator 1 to the focusing module 3, and the focusing module 3 is used to focus the received light onto the human eye. Figure 4 As shown, the display system 03 also includes an adjustment module 4. When the display system 03 is not in operation, the adjustment module 4 and the focusing module 3 are distributed along the optical axis of the display system 03. When the image generator 1 is not in operation, the adjustment module 4 can reduce the intensity of the light propagating to the focusing module 3, thereby reducing the intensity of the ambient light reflected by the focusing module 3 and reaching the human eye 02, effectively reducing the glare intensity of the display system 03 and improving the user experience. When the display system 03 is used in a car environment, reducing the glare intensity of the display system 03 can reduce the impact on the driver's or passenger's vision, thereby improving safety during driving. Specifically, the adjustment module 4 can be a diffuser, which can scatter the light that penetrates it, that is, reduce the intensity of the light propagating to the focusing module 3, thereby reducing the intensity of the light reflected by the focusing module 3 and propagating to the human eye 02, and thus reducing the glare intensity of the display system 03.

[0074] Alternatively, the adjustment module 4 can be a light-blocking component that can prevent at least part of the light from passing through itself and propagating to the focusing module 3, thereby reducing the intensity of the light propagating to the focusing module 3, thus reducing the intensity of the light reflected by the focusing module 3 and propagating to the human eye 02, and thus reducing the glare intensity of the display system 03.

[0075] Alternatively, the adjustment module 4 can drive the focusing module 3 to move, thereby changing the angle of the light reflected by the focusing module 3, reducing the risk of the focusing module 3 reflecting light to the human eye 02, and thus reducing the glare intensity of the display system 03.

[0076] The following section describes in detail the specific structure of the adjustment module as a diffuser.

[0077] Figure 5 This is a schematic diagram of the optical path when the adjustment module is a diffuser. For example... Figure 5As shown, the astigmatism element can scatter light that penetrates itself. After the light from the external environment passes through the astigmatism element, it is scattered in various directions, thereby reducing the intensity of the light from the external environment that propagates to the focusing module 3. The focusing module 3 reflects the light that has propagated to the focusing module 3, and the light then passes through the astigmatism element again. The astigmatism element then scatters the light in various directions again, thereby reducing the intensity of the light reflected by the focusing module 3 and propagated to the human eye 02.

[0078] When the adjustment module 4 is a diffuser, the diffuser can be a diffuser sheet to reduce the cost of the diffuser, thereby reducing the cost of the display system 03 and the head-up display device.

[0079] When the diffuser is a diffuser plate, the diffuser plate can be detachably installed on the window module 2, and along the optical axis of the display system 03, the diffuser plate is located on the side of the window module 2 away from the focusing module 3.

[0080] In this embodiment, when the image generator 1 is in operation, the astigmatism filter can be removed from the window module 2. This reduces the risk that light emitted by the image generator 1, after being reflected by the focusing module 3 and reaching the astigmatism filter, will be scattered by it. This reduces the risk of weak light intensity in the virtual image focused at the human eye 02, thereby improving the imaging effect of the display system 03 and enhancing the viewer's experience. When the image generator 1 is not in operation, the astigmatism filter can be installed on the window module 2 to reduce glare from the display system 03. The detachable connection between the astigmatism filter and the window module 2 reduces glare from the display system 03 while minimizing its impact on the imaging effect, thus improving the viewer's experience.

[0081] The detachable connection between the astigmatism filter and the window module 2 includes one or more of the following methods: magnetic fixation, snap-fit, and fixation with fasteners. In some embodiments, the astigmatism filter can be magnetically fixed to the window module 2 to facilitate its installation and removal, reducing the difficulty of installation and removal. In some embodiments, the astigmatism filter can be snap-fit ​​fixed to the window module 2, i.e., one of the astigmatism filter and the window module 2 is provided with a snap-fit, and the other is provided with a slot. The snap-fit ​​and slot are fixed together, which can improve the accuracy of the installation position of the astigmatism filter on the window module 2, thereby improving the effect of the astigmatism filter. In some embodiments, the astigmatism filter and the window module 2 are fixed with fasteners, including but not limited to screws, bolts, pins, rivets, etc., to reduce the connection cost of the astigmatism filter and the window module 2, and at the same time, it helps to reduce the processing cost of the astigmatism filter and the window module 2.

[0082] When the adjustment module 4 is a diffuser, the diffuser can also be an electrically powered liquid crystal glass.

[0083] When the diffuser is an electrochromic liquid crystal glass, the display system 03 also includes a first power supply 5, and the electrochromic liquid crystal glass is connected to the first power supply 5. When the image generator 1 is in working state, the electrochromic liquid crystal glass is connected to the first power supply 5, so that the liquid crystal molecules in the liquid crystal film layer inside the electrochromic liquid crystal glass are regularly oriented. At this time, the electrochromic liquid crystal glass can be equivalent to a transmissive flat glass, that is, the propagation path of light passing through the electrochromic liquid crystal glass is not affected, and the electrochromic liquid crystal glass is in a non-diffusing state. When the image generator 1 is not in working state, the electrochromic liquid crystal glass is disconnected from the first power supply 5, and the liquid crystal molecules in the liquid crystal film layer of the electrochromic liquid crystal glass are randomly arranged, so that the electrochromic liquid crystal glass appears to be in a fogged state. The light from the external environment is scattered in all directions by the liquid crystal molecules, so that the electrochromic liquid crystal glass is in a fogged state. Figure 5 The astigmatic state shown.

[0084] In this embodiment, the switching between the two states can be achieved simply by controlling the power on or off of the electro-controlled liquid crystal glass, which simplifies the operation difficulty of switching the state of the diffuser and thus shortens the time for the display system 03 to switch between the working state and the non-working state.

[0085] Since the electro-controlled liquid crystal glass does not require frequent disassembly, therefore, in one embodiment, such as Figure 5 As shown, along the optical axis of the display system 03, the electro-controlled liquid crystal glass is located on the side of the window module 2 away from the focusing module 3, so as to facilitate the installation, disassembly and replacement of the electro-controlled liquid crystal glass.

[0086] Figure 6 This is a schematic diagram showing the mounting position of the electro-controlled liquid crystal glass in another embodiment. For example... Figure 6 As shown, along the optical axis of the display system, the adjustment module 4 (electro-controlled LCD glass) is located between the window module 2 and the focusing module 3, which reduces the risk of damage to the electro-controlled LCD glass from external forces, thereby helping to extend the service life of the electro-controlled LCD glass.

[0087] In one embodiment, such as Figure 6 As shown, both the image generator 1 and the electronically controlled liquid crystal glass are connected to the first power supply 5, and the image generator 1 and the electronically controlled liquid crystal glass are connected in parallel. When the image generator 1 is in the working state, the image generator 1 is connected to the first power supply 5; when the image generator 1 is in the non-working state, the image generator 1 is disconnected from the first power supply 5.

[0088] In this embodiment, both the image generator 1 and the electro-liquid crystal glass are connected to the first power supply 5, reducing the number of power supplies required and thus helping to reduce the overall size of the display system 03, facilitating its installation. The parallel connection of the image generator 1 and the electro-liquid crystal glass reduces interference between them and also reduces the risk of poor imaging performance due to the simultaneous operation of both components, thereby improving the imaging effect of the display system 03.

[0089] Figure 7 This is a schematic diagram of the electrical connection structure of an electro-controlled liquid crystal glass in another embodiment. (See diagram below.) Figure 7 As shown, the display system also includes a second power supply 6, and the image generator 1 is connected to the second power supply 6; when the image generator 1 is in the working state, the image generator 1 is connected to the second power supply 6; when the image generator 1 is in the non-working state, the image generator 1 is disconnected from the second power supply 6.

[0090] In this embodiment, the electro-controlled liquid crystal glass is connected to the first power supply 5, and the image generator 1 is connected to the second power supply 6, so that the image generator 1 and the electro-controlled liquid crystal glass can work independently, thereby reducing the interference between the image generator 1 and the electro-controlled liquid crystal glass, reducing the risk that the simultaneous operation of the image generator 1 and the electro-controlled liquid crystal glass will result in poor imaging effect of the display system 03, thereby improving the imaging effect of the display system 03.

[0091] The following section describes in detail the specific structure of the adjustment module as a light-blocking component.

[0092] Figure 8 This is a schematic diagram of the optical path when the adjustment module is a light-blocking component. For example... Figure 8 As shown, the light-blocking component can prevent at least part of the light from passing through itself and propagating to the focusing module 3.

[0093] When the adjustment module 4 is a light-blocking component, the light-blocking component can be a light-blocking curtain, electrochromic glass, or a detachable filter.

[0094] Figure 9 This is a structural diagram when the light-blocking component is a blackout curtain. (Example) Figure 9 As shown, when the light-blocking component is a light-blocking curtain, the display system 03 also includes a storage unit 7, which is connected to the light-blocking curtain and can retract or open the light-blocking curtain.

[0095] In this embodiment, when the image generator 1 is in operation, the storage unit 7 can retract the light-blocking curtain, thereby removing the obstruction of the viewing window module 2. This allows the light emitted by the image generator 1 to be reflected by the focusing module 3 and penetrate the viewing window module 2 to reach the human eye 02, improving the imaging effect of the display system 03 and enhancing the viewer's user experience. When the image generator 1 is not in operation, the storage unit 7 can open the light-blocking curtain. The light-blocking curtain can block the viewing window module 2, preventing ambient light from being reflected by the viewing window module 2 and entering the human eye 02. It also prevents ambient light from shining through the viewing window module 2 and being reflected by the focusing module 3 into the human eye 02, thus reducing glare caused by ambient light entering the human eye. The switching between the open and retracted states of the light-blocking curtain can reduce the glare of the display system 03 while minimizing the impact of the light-blocking curtain on the imaging effect of the display system 03, thereby improving the viewer's user experience.

[0096] By retracting or opening the blackout curtain using the storage unit 7, the difficulty of switching the blackout curtain between the two states is reduced, which helps to shorten the switching time.

[0097] In one embodiment, such as Figure 9 As shown, along the optical axis of the display system 03, the light-blocking curtain is located on the side of the window module 2 away from the focusing module 3, which facilitates the installation, disassembly and replacement of the light-blocking curtain.

[0098] Figure 10 This is a schematic diagram showing the installation position of the blackout curtain in another embodiment. (See diagram below.) Figure 10 As shown, along the optical axis of the display system 03, the light-blocking curtain is located between the window module 2 and the focusing module 3, which reduces the risk of damage to the light-blocking curtain from external forces, thereby helping to extend the service life of the light-blocking curtain.

[0099] Figure 11 This is a schematic diagram of the structure of the storage unit in one embodiment. For example... Figure 11 As shown, the storage unit 7 includes at least a first motor 71, and one end of the light-blocking curtain is connected to the output shaft 711 of the first motor 71.

[0100] Specifically, such as Figure 11 As shown, the light-blocking curtain can be directly connected to the output shaft 711 to simplify the structure of the storage unit 7, reduce the cost of the storage unit 7, and reduce the size of the storage unit 7.

[0101] Figure 12 This is a schematic diagram of the storage unit in another embodiment. (See diagram below.) Figure 12As shown, the storage unit 7 also includes a roller 72, which is sleeved on the output shaft 711 of the first motor 71. One end of the blackout curtain is connected to the roller 72, that is, the blackout curtain and the output shaft 711 are indirectly connected through the roller 72, which reduces the risk of damage during the opening or closing of the blackout curtain and extends the service life of the blackout curtain.

[0102] The storage unit 7 can be connected to any side of the blackout curtain. For example, the storage unit 7 can be connected to the top, bottom, left, right or corner of the blackout curtain. This application embodiment does not make any special limitation on the connection position between the storage unit 7 and the blackout curtain.

[0103] Figure 13 This is a schematic diagram illustrating the structure of the system in one embodiment. For example... Figure 13 As shown, when the light-blocking element is electrochromic glass, the display system also includes a third power supply 8, and the electrochromic glass is connected to the third power supply 8.

[0104] In one embodiment, when the image generator 1 is in a non-operating state, the electrochromic glass is connected to the third power supply 8, and the electrochromic layer in the electrochromic glass undergoes an electrochemical reaction. By inputting a corresponding electrical signal, the color and depth of the glass can be adjusted. That is, by adjusting the magnitude of the current, the color, depth, and other parameters of the electrochromic glass can be adjusted to change the absorption rate and reflectivity of the electrochromic glass to light, thereby reducing the light transmittance and putting the electrochromic glass in a light-blocking state. When the image generator 1 is in an operating state, the electrochromic glass is disconnected from the third power supply 8, and the electrochromic glass is equivalent to a transmissive flat glass. At this time, the electrochromic glass is in a light-transmitting state.

[0105] In another embodiment, the electrochromic glass includes at least an electrochromic layer and an electrolyte layer. When the image generator 1 is in operation, the electrochromic glass is connected to the third power supply 8, and the third power supply 8 transmits a current in a first direction into the electrochromic glass. At this time, ions move from the electrolyte layer to the electrochromic layer, causing a change in the color or transparency of the electrochromic layer. The electrochromic glass is equivalent to a transmissive flat glass and is in a light-transmitting state. When the image generator 1 is not in operation, the electrochromic glass is still connected to the third power supply 8, and the third power supply 8 transmits a current in a second direction into the electrochromic glass. The first direction is opposite to the second direction. Under the action of the reverse current, ions return from the electrochromic layer to the electrolyte layer, causing the color and transparency of the electrochromic glass to return to their original state, thereby reducing the light transmittance and putting the electrochromic glass in a light-blocking state. That is, the electrochromic glass can switch between a light-blocking state and a light-transmitting state by adjusting the output of the third power supply 8 in either a forward or reverse direction.

[0106] In this embodiment, switching between the two states can be achieved simply by controlling the on / off state of the electrochromic glass or adjusting the current, which simplifies the operation of switching the state of the light-blocking component and thus shortens the time for the display system 03 to switch between the working state and the non-working state.

[0107] In one embodiment, such as Figure 13 As shown, along the optical axis of the display system, the electrochromic glass is located on the side of the window module 2 away from the focusing module 3, which facilitates the installation, removal and replacement of the electrochromic glass.

[0108] Figure 14 This is a schematic diagram illustrating the structure of the system in another embodiment. For example... Figure 14 As shown, along the optical axis of the display system, the electrochromic glass is located between the window module 2 and the focusing module 3, which reduces the risk of damage to the electrochromic glass from external forces, thereby helping to extend the service life of the electrochromic glass.

[0109] In one embodiment, such as Figure 14 As shown, both the image generator 1 and the electrochromic glass are connected to the third power supply 8, and the image generator 1 and the electrochromic glass are connected in parallel. When the image generator 1 is in the working state, the image generator 1 is connected to the third power supply 8; when the image generator 1 is in the non-working state, the image generator 1 is disconnected from the third power supply 8.

[0110] In this embodiment, both the image generator 1 and the electrochromic glass are connected to the third power supply 8, reducing the number of power supplies required and thus helping to reduce the overall size of the display system 03, facilitating its installation. The parallel connection of the image generator 1 and the electrochromic glass reduces interference between them and also reduces the risk of poor imaging performance due to the simultaneous operation of both components, thereby improving the imaging effect of the display system 03.

[0111] Figure 15 This is a schematic diagram of the electrical connection structure of electrochromic glass in another embodiment. Figure 15 As shown, the display system also includes a second power supply 6, and the image generator 1 is connected to the second power supply 6; when the image generator 1 is in the working state, the image generator 1 is connected to the second power supply 6; when the image generator 1 is in the non-working state, the image generator 1 is disconnected from the second power supply 6.

[0112] In this embodiment, the electrochromic glass is connected to the third power supply 8, and the image generator 1 is connected to the second power supply 6, so that the image generator 1 and the electrochromic glass can work independently, thereby reducing the interference between the image generator 1 and the electrochromic glass, reducing the risk that the simultaneous operation of the image generator 1 and the electrochromic glass will result in poor imaging effect of the display system 03, thereby improving the imaging effect of the display system 03.

[0113] When the light-blocking component is a filter, the filter can selectively transmit or block light within a specific wavelength range, thereby specifically improving the light-blocking effect of the light-blocking component. Furthermore, as a filter, the wavelength of the light emitted by the image generator 1 can be adjusted, allowing the light emitted by the image generator 1 to pass through the filter and the viewing window module 2, be reflected by the focusing module 3, and then be focused onto the human eye 02. That is, when the light-blocking component is a filter, there is no need to remove the filter when the image generator 1 switches from a non-working state to a working state, thus simplifying the operation of the display system 03 and the head-up display device. At the same time, the filter can also reduce glare during the operation of the display system 03, improving the user experience of the display system 03 and the head-up display device.

[0114] The filters include, but are not limited to, bandpass filters, long-pass filters, short-pass filters, cutoff filters, neutral density filters, and polarizing filters. Bandpass filters allow only light within a specific wavelength range to pass through; long-pass filters allow only light with wavelengths longer than a specific wavelength to pass through; short-pass filters allow only light with wavelengths shorter than a specific wavelength to pass through; cutoff filters block light within a specific wavelength range, while allowing other wavelengths to pass freely; neutral density filters uniformly reduce the intensity of light across all wavelengths without altering the color of the light; and polarizing filters allow only polarized light in a specific direction to pass through. This application does not specifically limit the type of filter used in its embodiments.

[0115] Figure 16 This is a schematic diagram showing the installation position of the filter. (For example...) Figure 16 As shown, the filter is detachably installed on the window module 2. Along the optical axis of the display system 03, the filter is located on the side of the window module 2 away from the focusing module 3.

[0116] In this embodiment, when the image generator 1 is in operation, the filter can be removed from the window module 2. This reduces the risk that the light emitted by the image generator 1, after being reflected by the focusing module 3 and reaching the filter, will be blocked by the filter. This reduces the risk that the light from the virtual image will not reach the human eye 02, thereby improving the imaging effect of the display system 03 and enhancing the viewer's experience. When the image generator 1 is not in operation, the filter can be installed on the window module 2 to reduce glare from the display system 03. The detachable connection between the filter and the window module 2 reduces glare from the display system 03 while minimizing the filter's impact on the imaging effect of the display system 03, thus improving the viewer's experience.

[0117] The detachable connection between the filter and the window module 2 includes one or more of the following methods: magnetic fixation, snap-fit, and fixation with fasteners. In some embodiments, the filter can be magnetically fixed to the window module 2 to facilitate the installation and removal of the filter, reducing the difficulty of installation and removal. In some embodiments, the filter can be snap-fit ​​fixed to the window module 2, i.e., one of the filter and the window module 2 is provided with a snap-fit, and the other is provided with a slot. The snap-fit ​​and slot are fixed together, which can improve the accuracy of the installation position of the filter on the window module 2, thereby improving the filtering effect. In some embodiments, the filter and the window module 2 are fixed with fasteners, including but not limited to screws, bolts, pins, rivets, etc., to reduce the connection cost of the filter and the window module 2, and at the same time, to reduce the processing cost of the filter and the window module 2.

[0118] The following describes in detail an embodiment in which the adjustment module 4 can drive the focus module 3 to move.

[0119] Figure 17 To illustrate the structural diagram of the system in one embodiment, Figure 18 for Figure 17 The optical path diagram after the adjustment module in the middle is rotated. (Example) Figure 17 As shown, the adjustment module 4 can be a drive motor. The adjustment module 4 is connected to the focusing module 3, and the adjustment module 4 can drive the focusing module 3. Figure 17 The state shown is rotated to Figure 18 The state shown. (As indicated) Figure 18 As shown, after the adjustment module 4 drives the focusing module 3 to rotate, it changes the reflection angle of the focusing module 3 to the ambient light. When the ambient light shines on the focusing module 3 through the window module 2, the risk of the ambient light entering the human eye 02 after being reflected by the focusing module 3 is reduced due to the change in the reflection angle of the focusing module 3, thereby reducing the glare of the display system 03.

[0120] Combination Figure 17 andFigure 18 It can be seen that when it is necessary to display system 03 from Figure 17 The working status shown has been switched to Figure 18 In the non-working state shown, the adjustment module 4 drives the focusing module 3 to rotate counterclockwise, thereby increasing the incident angle of ambient light on the surface of the focusing module 3, which in turn increases the reflection angle of the focusing module 3, thus reflecting the ambient light beyond the observable range of the human eye 02. When it is necessary to move the display system 03 from... Figure 18 The non-working state shown has been switched to Figure 17 In the operating state shown, the adjustment module 4 drives the focusing module 3 to rotate clockwise to reset, enabling the focusing module 3 to accurately focus the light emitted by the image generator 1 onto the human eye 02. When the display system 03 is in operation, the incident angle of ambient light on the surface of the focusing module 3 is the first incident angle; when the display system 03 is not in operation, the incident angle of ambient light on the surface of the focusing module 3 is the second incident angle. The first incident angle is smaller than the second incident angle, thus ensuring that the light emitted by the image generator 1 is accurately focused onto the human eye 02 when the display system 03 is in operation, and that ambient light is reflected outside the observable range of the human eye 02 when the display system 03 is not in operation, thereby reducing glare in the non-operating state of the display system 03.

[0121] In one embodiment, such as Figure 18 As shown, the adjustment module 4, which serves as the drive motor, is directly connected to the focusing module 3 to simplify the structure of the display system 03.

[0122] Figure 19 This is a schematic diagram illustrating the structure of the system in one embodiment. In another embodiment, such as... Figure 19 As shown, the window module 2 and the focusing module 3 are connected as a whole. The adjustment module 4 is connected to the overall structure of the window module 2 and the focusing module 3. For example, the window module 2 and the focusing module 3 are mounted on the same substrate 9. The adjustment module 4 and the focusing module 3 are indirectly connected through the substrate 9, so that the adjustment module 4 can drive the window module 2 and the focusing module 3 to rotate synchronously. This improves the accuracy of the relative position of the window module 2 and the focusing module 3 before and after rotation, reduces the risk that the angle between the window module 2 and the focusing module 3 will be incorrect from the preset angle when the display system 03 works again. This reduces the risk of unclear or distorted imaging of the display system 03, thereby improving the imaging effect of the display system 03 and enhancing the viewer's viewing experience.

[0123] Figure 20 This is a schematic diagram illustrating the structure of the system in one embodiment. In another embodiment, such as... Figure 20As shown, the image generator 1, window module 2, and focus module 3 are connected as a whole. The adjustment module 4 is connected to the overall structure of the image generator, window module 2, and focus module 3. For example, the image generator, window module 2, and focus module 3 are mounted on the same substrate 9. The adjustment module 4 and focus module 3 are indirectly connected through the substrate 9, so that the adjustment module 4 can simultaneously drive the image generator 1, window module 2, and focus module 3 to rotate synchronously, thereby improving the accuracy of the relative positions of the image generator 1, window module 2, and focus module 3 before and after rotation, further improving the imaging effect of the display system 03, so as to further enhance the viewing experience of the viewer.

[0124] Based on the display system 03 in any of the above embodiments, the image generator 1 can be positioned in at least two of the following ways:

[0125] Figure 21 This is a schematic diagram showing the installation location of the image generator in one embodiment. (See diagram below.) Figure 21 As shown, the image generator 1 is located outside the optical axis of the display system 03, that is, the light emitted by the image generator 1 has an angle greater than zero with the optical axis of the display system 03. At this time, the display system 03 is composed of the image generator, the window module 2 and the focusing module 3 to form a "Birdbath" display system (Birdbath display system). The Birdbath display system has a simple structure, high image quality and low cost.

[0126] Figure 22 This is a schematic diagram showing the installation location of the image generator in another embodiment. (See diagram below.) Figure 22 As shown, the image generator 1 and the focusing module 3 are distributed along the optical axis of the display system 03. The image generator 1 is located above the optical axis of the display system 03, that is, the light emitted by the image generator 1 coincides with the optical axis of the display system 03. At this time, the display system 03 is composed of the image generator, the window module 2 and the focusing module 3 as a folded optical path display system (Pancake display system). The Pancake display system has a small size by folding the optical path. The Pancake display system can provide high resolution and high contrast images and reduce distortion and dispersion.

[0127] This application does not impose any special limitation on the type of display system 03, so as to increase the flexibility of the display system 03 in setting up, thereby enabling the display system 03 to be flexibly applied in the AR field, VR field or other display fields, so as to expand the applicable fields of the display system 03.

[0128] The window module 2 may contain only a beam splitter, or at least one prism may be placed between the beam splitter and the focusing module 3. The prism can reflect multiple rays of light multiple times to achieve functions such as folding the light path, reducing the size of the display system 03, and magnifying the virtual image.

[0129] For the same or similar parts among the various embodiments in this specification, please refer to each other.

Claims

1. A display system, characterized by, The display system comprises an image generator, a window module and a focusing module; The window module is located on the side of the image generator close to the human eye along the optical axis direction of the display system, and the window module is used for transmitting the light emitted by the image generator to the focusing module, and the focusing module is used for focusing the received light to the human eye; The display system further comprises an adjusting module, when the image generator is in a non-working state, the adjusting module is distributed along the optical axis direction of the display system with the focusing module, and when the image generator is in a non-working state, the adjusting module is used for weakening the intensity of the light of the external environment light propagating to the focusing module.

2. The display system of claim 1, wherein, The adjusting module is a light scattering piece, which can scatter the light penetrating through itself.

3. The display system of claim 2, wherein, The light scattering piece is a light scattering sheet.

4. The display system of claim 2, wherein, The light scattering piece is an electrically controlled liquid crystal glass, and the display system further comprises a first power supply; When the image generator is in a working state, the electrically controlled liquid crystal glass is connected with the first power supply; When the image generator is in a non-working state, the electrically controlled liquid crystal glass is disconnected with the first power supply.

5. The display system of claim 1, wherein, The adjusting module is a light blocking piece, which can block at least part of the light from penetrating through itself and propagating to the focusing module.

6. The display system of claim 5, wherein, The light blocking piece is an electrochromic glass, and the display system further comprises a third power supply; When the image generator is in a working state, the electrochromic glass is connected with the third power supply, and the electrochromic glass is in a light shielding state; When the image generator is in a non-working state, the electrochromic glass is disconnected with the third power supply, and the electrochromic glass is in a light transmitting state.

7. The display system of claim 5, wherein, The light blocking piece is a light filter.

8. The display system of claim 5, wherein, The light blocking piece is a light curtain, and the display system further comprises a storage unit, the storage unit is connected with the light curtain, and the storage unit can fold or open the light curtain; The storage unit at least comprises a first motor, and one end of the light curtain is connected with the output shaft of the first motor.

9. The display system of any one of claims 1 to 8, wherein, Along the optical axis direction of the display system, the adjusting module is located on the side of the window module away from the focusing module, or the adjusting module is located between the window module and the focusing module.

10. The display system of any one of claims 1-7, wherein, The adjusting module and the window module are connected by one or more of magnetic attraction, clamping, and fastener.

11. A display system, characterized by The display system comprises an image generator, a window module and a focusing module; The window module is located on the side of the image generator close to the human eye along the optical axis direction of the display system, and the window module is used for transmitting the light emitted by the image generator to the focusing module, and the focusing module is used for focusing the received light to the human eye; The display system further comprises an adjusting module, the adjusting module is connected with the focusing module, and the adjusting module can drive the focusing module to move to increase or decrease the angle of the external environment light reflected by the focusing module.

12. The display system of claim 11, wherein, When the image generator is in an active state, an incident angle of ambient light on a surface of the focusing module is a first reflection angle, and when the image generator is in an inactive state, an incident angle of ambient light on the surface of the focusing module is a second reflection angle, the first reflection angle being smaller than the second reflection angle.

13. The display system of claim 11 or 12, wherein, The adjusting module is directly connected with the focusing module.

14. The display system of claim 11 or 12, wherein, The display system comprises a substrate, the window module and the focusing module are both mounted on the substrate, the adjusting module is indirectly connected with the focusing module through the substrate, and the adjusting module can drive the window module and the focusing module to move synchronously.

15. The display system of claim 11 or 12, wherein, The display system comprises a substrate, the image generator, the window module and the focusing module are all mounted on the substrate, the adjusting module is indirectly connected with the focusing module through the substrate, and the adjusting module can drive the image generator, the window module and the focusing module to move synchronously.

16. A head-up display device, characterized by comprising: The head-up display device comprises: a device main body; the display system of any one of claims 1 to 15, the display system being mounted on the device main body.

Images