Deflection mirror body, vehicle lamp, vehicle and projection device

Abstract

The utility model provides a deflection mirror body, a vehicle lamp, a vehicle and a projection device. The deflection lens body comprises a plurality of prism units, the peripheral side face of each prism unit comprises a light-in face and a light-out face, the light-in faces and the light-out faces are oppositely arranged in the first direction, the light-in faces incline relative to the light-out faces, the first direction is the thickness direction of the prism units, and the prism units are sequentially connected in the second direction. The second direction is the width direction of the prism units, and the light incident surfaces of the plurality of prism units are flush. According to the technical scheme provided by the invention, the processing defects of the deflection mirror body in the preparation process can be reduced, and the illumination effect of the light penetrating through the deflection mirror body is improved.

Description

Technical Field

[0001] This application relates to the field of optical display, specifically to a deflecting mirror, vehicle headlights, vehicles, and projection devices. Background Technology

[0002] With the development of vehicle intelligence, consumers have developed more personalized demands for vehicle lights, such as welcome lights, projected patterns, and light carpets. Currently, vehicle lights suffer from a small field of view and a limited range of light projection.

[0003] To expand the headlight viewing angle of a vehicle, a lens can be placed in front of the light source, and the lens can be moved to change the headlight viewing angle so that the headlight can adapt to changes in the illumination position of the usage scenario. However, because the lens is prone to processing defects during manufacturing, stray light can easily appear when the light passes through the lens, affecting the lighting effect. Utility Model Content

[0004] The embodiments of this application provide a deflecting mirror, a vehicle headlight, a vehicle, and a projection device, which can reduce processing defects that occur during the manufacturing process of the deflecting mirror and improve the illumination effect of light transmitted through the deflecting mirror.

[0005] In a first aspect, this application provides a deflecting mirror body, including a plurality of prism units. The peripheral surface of each prism unit includes an incident light surface and an exit light surface. The incident light surface and the exit light surface are arranged opposite to each other in a first direction. The incident light surface is inclined relative to the exit light surface. The first direction is the thickness direction of the prism unit. The plurality of prism units are connected sequentially in a second direction, which is the width direction of the prism unit. The incident light surfaces of the plurality of prism units are flush.

[0006] In this embodiment, in two adjacent prism units, the light-emitting surface of one prism unit forms a sharp corner with the connecting surface of the other adjacent prism unit. If the corner is directly cut into the optical material to form the shape required for the deflecting mirror, the corner is prone to burrs, rough edges, and other processing defects due to uneven cutting force, material toughness, or processing equipment errors.

[0007] Manufacturing defects can disrupt the surface smoothness of the deflector, causing irregular scattering of light and creating stray light. When dimming projection is used on vehicle headlights, this stray light can interfere with the beam direction, reduce illumination intensity, and even cause glare. Glare can lead to driver fatigue or temporary blindness, increasing the risk of accidents and affecting driving safety.

[0008] This application embodiment allows for the direct assembly of prism units to form a deflecting mirror. During fabrication, no sharp corners need to be machined from the prism units; only the large surface structures of the prism units need to be processed. The surface can be machined by cutting during the deflecting mirror manufacturing process. Since the surface machining of the prism units does not require setting the cutting direction for convex edges, there is no need to frequently change the cutting tool path, allowing for only straight-line cutting. This continuous tool path and stable cutting force significantly reduce the risk of burrs and chipping. Eliminating the need for corner machining shortens processing time and reduces tool wear, further reducing the probability of machining defects in the deflecting mirror.

[0009] Multiple prism units within the deflecting mirror divide the entire light-emitting surface into several smaller light-emitting surfaces, reducing the distance between the light-emitting and incident surfaces and thus significantly reducing the thickness of the deflecting mirror. With its ultra-thin design, lightweight construction, and ease of integration, the deflecting mirror can adapt to the miniaturization trend of automotive headlights, while simultaneously optimizing optical performance through prism units to improve lighting quality.

[0010] Furthermore, due to the high precision of the deflecting mirror body, it is less prone to burrs and other processing defects. Therefore, light passing through the deflecting mirror body is less likely to produce stray light, reducing light waste and increasing the utilization rate of the light source. When the deflecting mirror body is used in vehicle headlights, it can also reduce the overall power consumption of the headlight. Avoiding stray light also prevents areas from being too bright or too dark, ensuring uniform road lighting, giving the headlights a clear cutoff line, ensuring clear vision for the driver, preventing glare for oncoming drivers, and reducing driver fatigue.

[0011] In one possible implementation, the deflector body further includes a light-transmitting plate, and the light-incident surface of each prism unit is connected to the light-transmitting plate.

[0012] In this embodiment, the light-transmitting plate provides mounting positions for multiple prism units, thereby stabilizing their relative positions. Simultaneously, the light-transmitting plate ensures that the light-incident surfaces of the multiple prism units are flush, resulting in a smoother light-incident surface for the deflecting mirror. An uneven light-incident surface can cause the light refraction angle to deviate from the design value, producing aberrations. A smooth light-incident surface ensures that light is incident at the expected angle, preventing beam deflection or diffusion.

[0013] In one possible implementation, the deflector body further includes a first connector, which is connected between the light-incident surface of the prism unit and the light-transmitting plate.

[0014] In this embodiment, the first connector can improve the connection strength between the multiple prism units and the light-transmitting plate, preventing the prism units from falling off the light-transmitting plate and causing structural damage to the deflecting mirror.

[0015] In one possible implementation, the peripheral surface of the prism unit further includes a first connecting surface and a second connecting surface, the first connecting surface and the second connecting surface being opposite to each other in a second direction, and the first connecting surface and the second connecting surface being connected between the light-incident surface and the light-outceasing surface.

[0016] The deflecting mirror body also includes a second connector, which connects the first connecting surface of a prism unit and the second connecting surface of an adjacent prism unit.

[0017] In this embodiment, the second connector can fix the relative positions of two adjacent prism units, thereby stabilizing the overall structure of the deflecting mirror and preventing deformation. This ensures that the focal point of light passing through the deflecting mirror is not easily shifted, improving image clarity. Simultaneously, it avoids image edge blurring caused by deflection of the deflecting mirror.

[0018] In one possible implementation, the deflector body further includes a light-shielding layer, and the light-transmitting plate includes a mounting surface connected to the prism unit. The area of ​​the mounting surface exposed relative to the prism unit is provided with a light-shielding layer.

[0019] In this embodiment, the mounting surface may reflect or refract light. Shielding the mounting surface reduces stray light and light waste, thus increasing the utilization rate of the light source. When the deflecting mirror is applied to vehicle lights, it can also reduce the overall power consumption of the headlight. Avoiding stray light also prevents areas from being too bright or too dark, ensuring uniform road lighting. This results in a clear cutoff line for the headlight illumination, guaranteeing a clear field of vision, preventing glare for oncoming drivers, and reducing driver fatigue.

[0020] In one possible implementation, the deflector body further includes a light-shielding layer that covers the first and second connecting surfaces.

[0021] In this embodiment, the first and second connecting surfaces of the prism unit are covered with a light-shielding layer to prevent the first and second connecting surfaces from reflecting light and generating unexpected stray light.

[0022] In addition, the reflection and refraction of the first and second connecting surfaces of the prism unit will cause some light loss. After the light-shielding layer absorbs this light, it can avoid secondary reflection or scattering, reduce the light loss of the light source, improve the light efficiency of the lamp (such as car lights), and thus reduce the power consumption of the lamp.

[0023] In one possible implementation, the prism unit further includes a first end face and a second end face, which are opposite to each other along the length of the prism unit, and the light-shielding layer also covers the first end face and the second end face.

[0024] In one possible implementation, the end face of the prism unit is recessed relative to the peripheral surface of the light-transmitting plate.

[0025] In this embodiment, when the deflecting mirror is subjected to an external force (such as a drop or vibration), the impact force is preferentially applied to the edge of the light-transmitting plate rather than directly transmitted to the prism unit. Multiple prism units can maintain structural stability under impact, thereby maintaining the stability of the light path transmitted through the deflecting mirror. When the deflecting mirror is applied to vehicle headlights, its impact resistance allows the headlight to have a stable illumination area, enhancing the dynamic stability of the illumination area and preventing the illumination area from swaying relative to the vehicle when it shakes. A stable and sway-free headlight illumination area significantly improves driving safety. On bumpy roads, during sharp turns, or during sudden braking, a stable beam ensures that the driver can always clearly identify road boundaries, obstacles, and pedestrians, avoiding blind spots caused by beam deviation, while also reducing glare interference from oncoming vehicles and lowering the risk of collision. Furthermore, stable lighting can reduce driver fatigue, enhance confidence in nighttime driving, and help intelligent driving assistance systems accurately perceive the environment, thus comprehensively ensuring driving safety and comfort.

[0026] Secondly, this application also provides a vehicle lamp, including a light source and a deflecting mirror as described above, wherein the light-emitting surface of the light source is opposite to the light-incident surface of the deflecting mirror, and the position of the deflecting mirror can change relative to the light-emitting side of the light source.

[0027] In this embodiment, the deflecting mirror can change its position in the optical path of the light source, thereby changing the propagation direction of the light passing through the deflecting mirror. This can deflect the light closer to the vehicle body, allowing the light passing through the deflecting mirror to reach an area closer to the vehicle body, thus expanding the field of view of the headlights.

[0028] When the area around a vehicle can be illuminated, it can be used in vehicle welcome scenarios. As the driver approaches the vehicle, the vehicle can illuminate or project patterns into the path the driver is approaching, which not only helps the driver quickly find their vehicle in a dark environment, but also creates a warm atmosphere and optimizes the user experience.

[0029] When a vehicle is in motion, the light emitted by the light source can create a light carpet effect after passing through a deflecting mirror. This turning light carpet can predict the vehicle's path in real time. As the vehicle is about to change lanes or turn, the light carpet bends accordingly, clearly indicating the vehicle's intention. This not only helps the driver better understand the vehicle's dynamics but also allows pedestrians and other vehicles to react in advance, preventing collisions.

[0030] Thirdly, this application also provides a vehicle, including a vehicle body and a vehicle light as described above, the vehicle light being mounted on the vehicle body.

[0031] In this embodiment, when the light source forms a certain pattern, the headlights can also project onto the side of the vehicle to create an ambient lighting effect, enhancing the user experience. Projecting onto the side of the vehicle also allows for easier illumination of the target lane area when changing lanes, improving driver safety and reducing blind spots.

[0032] When a vehicle is turning, the deflector can change the direction of light propagation, thereby illuminating the left or right turn lane with the headlights to achieve a turning illumination or side light carpet illumination effect, increasing the user's visibility area when turning in the dark and improving the user's turning safety.

[0033] Fourthly, this application also provides a projection device, including a processor, a light source, and a deflecting mirror as described above, wherein the processor is capable of controlling the movement of the deflecting mirror relative to the light-emitting side of the light source. Attached Figure Description

[0034] To more clearly illustrate the technical solution 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 from these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the vehicle provided in an embodiment of this application in a work scenario;

[0036] Figure 2 yes Figure 1 The diagram shows a partial structural schematic of the vehicle lights being installed on the vehicle body.

[0037] Figure 3 yes Figure 2 A schematic diagram of the structure of the first embodiment of the deflecting mirror shown;

[0038] Figure 4 yes Figure 3 A schematic cross-sectional view at point AA of the first embodiment of the deflecting mirror shown;

[0039] Figure 5 yes Figure 2 A schematic diagram of a second embodiment of the deflecting mirror body is shown.

[0040] Figure 6 yes Figure 5 A schematic diagram of the cross-section at BB of the deflecting mirror shown;

[0041] Figure 7 yes Figure 2 Another structural schematic diagram of the second embodiment of the deflecting mirror shown;

[0042] Figure 8 yes Figure 1 The diagram shows the structure of the illuminated area of ​​the vehicle in different usage scenarios.

[0043] Figure 9 yes Figure 2 The flowchart shows the preparation method of the deflecting mirror. Detailed Implementation

[0044] The specific embodiments of this application will now be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in other ways different from those described herein, and therefore, this application is not limited to these embodiments.

[0045] For ease of understanding, the terminology used in the embodiments of this application will be explained first.

[0046] Multiple: refers to two or more.

[0047] Connection: should be interpreted broadly. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through an intermediary.

[0048] The specific embodiments of this application will now be clearly described in conjunction with the accompanying drawings.

[0049] This application provides a vehicle that can flexibly adjust the illumination area of ​​the headlight module, expanding the field of view of the headlights and achieving a wider range of illumination and projection.

[0050] Please see Figure 1 , Figure 1 This is a schematic diagram of a vehicle 1000 provided in an embodiment of this application in a working scenario. The vehicle 1000 in this embodiment can be a known vehicle such as a car, airplane, ship, or rocket, or it can be a newly emerging vehicle 1000 in the future. The car can be an electric vehicle, a gasoline-powered vehicle, or a hybrid vehicle, such as a pure electric vehicle, a range-extended electric vehicle, a hybrid electric vehicle, a fuel cell vehicle, or a new energy vehicle; this application does not specifically limit its type. The following description uses a vehicle 1000 as an example.

[0051] Please see Figure 2 , Figure 2 yes Figure 1The diagram shows a partial structural representation of the vehicle headlight 100 mounted on the vehicle body 200. The vehicle 1000 includes the headlight 100, a controller 300, and the vehicle body 200. Both the headlight 100 and the controller 300 are mounted on the vehicle body 200. The controller 300 can be electrically connected to the headlight 100. The controller 300 can control the direction of light propagation of the headlight 100.

[0052] The controller 300 can communicate with the computer system in the vehicle 1000 via the vehicle's bus to receive various information or control signals, and then send information to the headlight module to control the direction of light propagation of the headlight module, thereby achieving the desired lighting effect. It should be noted that, with technological advancements, the functionality of the controller 300 may be integrated into the vehicle's computer system, allowing the computer system to directly control the headlight module to change the direction of light propagation. For example, the controller 300 could be integrated into the cockpit domain controller 300. This application does not limit the specific operating method of the controller 300.

[0053] The vehicle light 100 can be an external or internal light fixture on a vehicle. For example, the vehicle light 100 can also integrate some sensing modules, such as integrating any of the sensing modules such as lidar, millimeter-wave radar or infrared detection devices into the vehicle light 100 to form a vehicle light 100 with integrated sensing and illumination.

[0054] In this embodiment, the lidar is combined with the intelligent driving system of the vehicle 1000. The lidar can monitor the surrounding environment in real time and provide the vehicle 1000 with timely obstacle avoidance and braking information, thereby improving driving safety.

[0055] Millimeter-wave radar measures the distance to a target by emitting electromagnetic waves and receiving the reflected echoes. Millimeter-wave radar can be used for blind spot monitoring, lane change assist at low speeds, emergency braking, adaptive cruise control, and other functions.

[0056] Infrared detection devices utilize electromagnetic radiation with longer wavelengths and lower frequencies for communication and detection. Infrared technology can be used to detect the airtightness of vehicle lights 100, ensuring the quality and performance of the lights by detecting gas leakage between the lamp cover and the bulb.

[0057] External lighting can include headlights or welcome lights. Headlights, also known as headlamps, are installed on both sides of the front of the vehicle for illuminating the road at night. Headlights include low beams and high beams. Low beams illuminate the road ahead without glare or causing discomfort to oncoming vehicles or other road users. High beams illuminate the road ahead further ahead. Welcome lights are mainly installed at the bottom of the doors or below the side mirrors. They automatically illuminate the area around the door when the door is opened or the driver approaches the vehicle, providing lighting for passengers getting in and out.

[0058] Interior lighting fixtures can include dome lights and ambient lights. Dome lights are used for illumination inside the vehicle at night or in dimly lit conditions. Ambient lights can be installed on the vehicle's interior and are non-illuminating lights used to create a specific ambiance. In some other applications, ambient lights can also be installed on the exterior of the vehicle.

[0059] The following description will use headlight 100 as an example. However, it should be noted that the headlight 100 in this application can be any type of headlight 100 used on the vehicle 1000, and is not limited to headlights.

[0060] Please continue reading. Figure 2 The vehicle headlight 100 includes a light source 10, an adjustment assembly 20, and a deflecting mirror 30. Both the light source 10 and the adjustment assembly 20 are connected to the vehicle body 200. The deflecting mirror 30 is connected to the adjustment assembly 20. The light-incident surface of the deflecting mirror 30 is positioned opposite to the light-emitting side of the light source 10. The adjustment assembly 20 can control the movement of the deflecting mirror 30 to change the direction of the light path passing through the deflecting mirror 30.

[0061] It should be noted that, Figure 2 The purpose of this illustration is solely to depict the connection relationship between the light source 10, the adjustment component 20, and the deflecting mirror 30, and is not to specifically limit the connection positions, specific structures, or quantities of each device. Furthermore, the structures illustrated in this application's embodiments do not constitute a specific limitation on the vehicle 1000. In other embodiments of this application, the vehicle 1000 may include more or fewer components than illustrated, or combine certain components, or split certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of both.

[0062] The light source 10 is connected to the vehicle body 200. The light source 10 is used to emit light to the deflecting mirror 30.

[0063] The light source 10 can be installed at any location on the vehicle body 200. For example, the vehicle body 200 may include body panels, doors, windows, bumpers, headlight housings, taillight housings, front fenders, interior panels, and other body accessories. The light source 10 provided in this embodiment can be installed on any part of the structure of the vehicle body 200.

[0064] The light source 10 can be a pixel-type headlight, which is based on micromirror matrix technology or LED matrix technology, and is composed of a large number of tiny light-emitting units (pixels). These pixels can be independently controlled for switching and brightness, thereby achieving precise control over the light distribution and illumination range. The light source 10 can also project text, traffic signs, or other complex graphics, as well as videos, for use in driver assistance and entertainment scenarios. Specifically, the light source 10 can be a digital light processing projector (DLP), liquid crystal on silicon (LCoS), thin film transistor liquid crystal display (TFT-LCD), micro light emitting diode (Micro-LED), or silicon-based OLED (Micro-OLED), etc.

[0065] The adjustment assembly 20 can adjust the position of the deflecting mirror 30 in the optical path of the light emitted by the light source 10. Alternatively, the adjustment assembly 20 can move the deflecting mirror 30 into the optical path of the light emitted by the light source 10. Or, the adjustment assembly 20 can move the deflecting mirror 30 out of the optical path of the light emitted by the light source 10. Alternatively, the adjustment assembly 20 can rotate the deflecting mirror 30 to change the direction of light deflection. The adjustment assembly 20 can be implemented by designing a specific transmission mechanism, including but not limited to worm gears, connecting rod devices, rocker arms, crankshafts, cams, pneumatic mechanisms, etc. This application does not limit the structure of the adjustment assembly 20.

[0066] In this embodiment, light is emitted from the light-emitting side of the light source 10. An adjustment assembly 20 is installed on the vehicle body 200 and connected to a deflecting mirror 30. The adjustment assembly 20 can adjust the deflecting mirror 30 located in the light path of the light source 10 to change the orientation of the light-emitting surface of the deflecting mirror 30, thereby deflecting the light passing through the deflecting mirror 30. The principle behind this light deflection can be based on refraction.

[0067] The deflecting mirror 30 can change its position in the optical path of the light source 10, thereby changing the propagation direction of the light passing through the deflecting mirror 30. It can deflect the light closer to the vehicle body, so that the light passing through the deflecting mirror 30 can reach the area closer to the vehicle body, thereby expanding the field of view of the headlight 100.

[0068] When the area around vehicle 1000 can be illuminated, it can be used in vehicle welcome scenarios. When the driver approaches the vehicle, the vehicle can illuminate or project a pattern into the path the driver is approaching, which not only helps the driver quickly find their vehicle in a dark environment, but also creates a warm atmosphere and optimizes the user experience.

[0069] When the vehicle 1000 is in motion, the light emitted by the light source 10 can form a light carpet effect after passing through the deflecting mirror 30. The turning light carpet can predict the vehicle's path in real time. When the vehicle is about to change lanes or turn, the light carpet will bend accordingly, thus clearly indicating the vehicle's driving intention. This not only helps the driver better grasp the vehicle's dynamics, but also allows pedestrians and vehicles around to react in advance, avoiding collisions.

[0070] Please refer to the following: Figure 3 and Figure 4 , Figure 3 yes Figure 2 The diagram shows a structural schematic of the first embodiment of the deflecting mirror 30. Figure 4 yes Figure 3 The diagram shows a cross-sectional view at point AA of the first embodiment of the deflecting mirror 30. In the diagram, the X direction represents the width of the deflecting mirror 30. The Y direction represents the thickness of the deflecting mirror 30. For ease of description, the Y direction is defined as the first direction. The Z direction represents the length of the deflecting mirror 30. For directional description, the Z direction is defined as the second direction.

[0071] For example, the material of the deflection mirror 30 provided in the embodiments of this application can be polyolefin material, glass, plastic, composite material, etc.

[0072] It should be noted that the deflecting mirror 30 in this embodiment can be part of a complete Fresnel lens. A complete Fresnel lens, viewed in cross-section, has a surface composed of a series of serrated grooves, with an elliptical arc at its center. Each groove can be considered an independent microlens, which adjusts light rays into parallel or focused light. When light enters from one side of the lens, after refraction and diffraction through these grooves, it is focused into a point on the other side of the lens or exits as parallel light.

[0073] When the deflecting mirror 30 is the Fresnel lens described above, the adjustment assembly 20 can rotate the Fresnel lens, and the central axis of its rotation can be the physical center point of the Fresnel lens. It should be noted that the center point of the Fresnel lens is offset from the center of the annular optical surface of the Fresnel plane.

[0074] In the first possible embodiment, please refer to [the relevant documentation]. Figure 3 and Figure 4The deflecting mirror body 30 includes multiple prism units 31, multiple second connectors 32, and a light-shielding layer 33. The multiple deflecting mirror bodies 30 are arranged in sequence, and two adjacent prism units 31 are connected by a second connector 32.

[0075] Specifically, the prism unit 31 includes a first end face 311, a second end face 312, and a peripheral side face 313. The first end face 311 and the second end face 312 are opposite to each other along the X direction. The peripheral side face 313 connects the first end face 311 and the second end face 312. The first end face 311 and the second end face 312 can be trapezoidal in shape. For example, the first end face 311 and the second end face 312 can be right trapezoids.

[0076] In some other possible implementations, the first end face 311 and the second end face 312 may be parallel to each other. Alternatively, the first end face 311 and the second end face 312 may also be inclined to each other. The first end face 311 and the second end face 312 may also be curved surfaces. The embodiments of this application do not limit the shape of the first end face 311 and the second end face 312.

[0077] The peripheral surface 313 includes a first connecting surface 3131, a second connecting surface 3132, a light-incident surface 3133, and a light-exiting surface 3134. The first connecting surface 3131 and the second connecting surface 3132 are opposite to each other in the Z direction. The width of the first connecting surface 3131 in the Y direction is smaller than the width of the second connecting surface 3132 in the Y direction. The first connecting surface 3131 and the second connecting surface 3132 are connected between the first end face 311 and the second end face 312. The first connecting surface 3131 is a surface prepared by a cutting process. The first connecting surface 3131 and the second connecting surface 3132 can be bonded together using an adhesive, as detailed below.

[0078] The light-incident surface 3133 and the light-exiting surface 3134 are opposite to each other in the Y direction. The light-incident surface 3133 is inclined relative to the light-exiting surface 3134. The light-incident surface 3133 can be arranged parallel to the Z direction. The light-exiting surface 3134 can be inclined relative to the Z direction. The light-incident surface 3133 and the light-exiting surface 3134 are connected between the first connecting surface 3131 and the second connecting surface 3132, and between the first end surface 311 and the second end surface 312. The light-incident surface 3133 can be perpendicular to the first connecting surface 3131 and the second connecting surface 3132.

[0079] The first connecting surface 3131 of one prism unit 31 is opposite to the second connecting surface 3132 of another adjacent prism unit 31, and the light incident surfaces 3133 of the multiple prism units 31 are flush.

[0080] Each second connector 32 securely connects a first connecting surface 3131 to an adjacent second connecting surface 3132. For example, the second connector 32 may be a colloid.

[0081] The second connector 32 can fix the relative positions of two adjacent prism units 31, so as to stabilize the overall structure of the deflecting mirror 30 and prevent the deflecting mirror 30 from deforming. This makes it less likely for the focal point of the light passing through the deflecting mirror 30 to shift, thus improving the clarity of the image. At the same time, it can prevent the deflecting mirror 30 from deforming and causing blurry edges in the image.

[0082] In this embodiment, the first connecting surface 3131 and the second connecting surface 3132 of the prism unit 31 have different dimensions in the Y direction. The first connecting surface 3131 is smaller than the second connecting surface 3132 in the Y direction. The light-emitting surface 3134 forms a non-90-degree angle with the second connecting surface 3132. Compared with other positions, the light-emitting surface 3134 and the second connecting surface 3132 form a sharp corner, exhibiting a sawtooth shape. The light-emitting surfaces 3134 of multiple prism units 31 constitute the emission surface of the deflecting mirror body 30. In two adjacent prism units 31, the light-emitting surface 3134 of one prism unit 31 forms a sharp corner with the connecting surface (first connecting surface 3131 or second connecting surface 3132) of the other adjacent prism unit 31. If the corner is directly cut into the optical material to form the shape required for the deflecting mirror body, the corner is prone to burrs, rough edges, and other processing defects due to uneven cutting force, material toughness, or processing equipment errors.

[0083] Manufacturing defects can disrupt the surface smoothness of the deflector, causing irregular scattering of light and creating stray light. When dimming projection is used on vehicle headlights, this stray light can interfere with the beam direction, reduce illumination intensity, and even cause glare. Glare can lead to driver fatigue or temporary blindness, increasing the risk of accidents and affecting driving safety.

[0084] In this embodiment, the deflecting mirror body 30 can be directly formed by splicing together prism units 31. During the fabrication process, the prism units 31 do not require the machining of sharp corners; only large surface structures such as the first connecting surface 3131, the second connecting surface 3132, the light-incident surface 3133, and the light-exit surface 3134 need to be machined. During the machining of the deflecting mirror body 30, the surface can be machined by cutting. Since the surface machining of the prism units 31 does not require setting a cutting direction with convex edges, it eliminates the need for frequent changes in the cutting tool path, allowing for only straight-line cutting. This continuous tool path and stable cutting force significantly reduce the risk of burrs and edge chipping. Eliminating the need for corner machining shortens machining time and reduces tool wear, further reducing the probability of machining defects in the deflecting mirror body 30.

[0085] The multiple prism units 31 in the deflecting mirror body 30 divide the entire light-emitting surface 3134 into multiple smaller light-emitting surfaces 3134, reducing the distance between the light-emitting surface 3134 and the light-incident surface 3133, thereby significantly reducing the thickness of the deflecting mirror body 30. With its ultra-thin design, lightweight, and easy integration, the deflecting mirror body 30 can adapt to the miniaturization trend of automotive lights, while optimizing optical performance and improving lighting quality through the prism units 31.

[0086] Furthermore, due to the high machining precision of the deflecting mirror 30, it is less prone to burrs and other machining defects. Therefore, the light passing through the deflecting mirror 30 is less likely to produce stray light, reducing light waste and increasing the utilization rate of the light source 10. When the deflecting mirror 30 is applied to vehicle lights, it can also reduce the overall power consumption of the vehicle lights. Avoiding stray light also prevents areas from being too bright or too dark, ensuring uniform road lighting, giving the vehicle lights a clear cutoff line, ensuring clear vision, preventing glare for oncoming drivers, and reducing driver fatigue.

[0087] The light-shielding layer 33 covers the first connecting surface 3131, the second connecting surface 3132, the first end surface 311, and the second end surface 312. That is, the light-shielding layer 33 covers all surfaces of each prism unit 31 except for the light-incident surface 3133 and the light-excising surface 3134.

[0088] In this embodiment, the first connecting surface 3131, the second connecting surface 3132, the first end surface 311 and the second end surface 312 of the prism unit 31 are covered with a light-shielding layer 33, which can prevent the first connecting surface 3131 and the second connecting surface 3132 from reflecting light and generating unexpected stray light.

[0089] In addition, the reflection and refraction of the first connecting surface 3131 and the second connecting surface 3132 of the prism unit 31 will cause some light loss. After the light-shielding layer 33 absorbs these lights, it can avoid secondary reflection or scattering, reduce the light loss of the light source 10, improve the light efficiency of the lamp (such as car lights), and thus reduce the power consumption of the lamp.

[0090] In the second possible embodiment, please refer to [reference needed]. Figure 5 and Figure 6 , Figure 5 yes Figure 2 A schematic diagram of a second embodiment of the deflecting mirror body 30 is shown. Figure 6 yes Figure 5 The diagram shows a cross-sectional view of the deflecting mirror 30 at point BB. The deflecting mirror 30 of the second embodiment differs from that of the first embodiment in that it further includes a light-transmitting plate 34 and a first connecting body 35. The light-incident surface 3133 of each prism unit 31 is connected to the light-transmitting plate 34.

[0091] Specifically, the light-transmitting plate 34 has a mounting surface 341. The mounting surface 341 is the surface of the light-transmitting plate 34 facing the Y direction. For example, the light-transmitting plate 34 can be a flat glass.

[0092] The light-incident surface 3133 of each prism unit 31 is connected to the mounting surface 341 via a first connector 35. The first connecting surfaces 3131 and second connecting surfaces 3132 of two adjacent prism units 31 are in contact. Alternatively, the first connecting surfaces 3131 and second connecting surfaces 3132 of two adjacent prism units 31 are connected via a second connector 32. For example, the first connector 35 can be optically clear adhesive (OCA).

[0093] In this embodiment, the light-transmitting plate 34 provides mounting positions for multiple prism units 31, thereby stabilizing the relative positions of the multiple prism units 31. Simultaneously, the light-transmitting plate 34 keeps the light-incident surfaces 3133 of the multiple prism units 31 flush, making the light-incident surface of the deflecting mirror 30 more flat. An uneven light-incident surface will cause the light refraction angle to deviate from the design value, resulting in aberrations. A flat light-incident surface ensures that light is incident at the expected angle, avoiding beam deflection or diffusion.

[0094] In this embodiment, the first connector 35 can improve the connection strength between the multiple prism units 31 and the light-transmitting plate 34, and prevent the prism units 31 from falling off the light-transmitting plate 34, thus avoiding structural damage to the deflecting mirror body 30.

[0095] For example, the first end face 311 and the second end face 312 of the prism unit 31 are recessed relative to the peripheral surface of the light-transmitting plate 34.

[0096] In this embodiment, when the deflecting mirror 30 is subjected to an external force (such as a drop or vibration), the impact force will preferentially act on the edge of the light-transmitting plate 34, rather than being directly transmitted to the prism unit 31. Multiple prism units 31 can maintain structural stability under impact, thereby maintaining the stability of the light path transmitted through the deflecting mirror 30. When the deflecting mirror 30 is applied to a vehicle headlight, its impact resistance allows the headlight to have a stable illumination area, enhancing the dynamic stability of the illumination area and preventing the illumination area from swaying relative to the vehicle when it shakes. A stable and sway-free headlight illumination area significantly improves driving safety. On bumpy roads, during sharp turns, or during sudden braking, a stable beam ensures that the driver can always clearly identify road boundaries, obstacles, and pedestrians, avoiding blind spots caused by beam deviation, while also reducing glare interference from oncoming vehicles and lowering the risk of collision. Furthermore, stable lighting can reduce driver fatigue, enhance confidence in nighttime driving, and help intelligent driving assistance systems accurately perceive the environment, thereby comprehensively ensuring driving safety and comfort.

[0097] The light-shielding layer 33 covers the area of ​​the first end face 311, the second end face 312, the first connecting surface 3131, the second connecting surface 3132, and the area of ​​the mounting surface 341 exposed relative to the prism unit 31.

[0098] In this embodiment, the mounting surface 341 may reflect or refract light. Shielding the mounting surface 341 reduces stray light and light waste, thus increasing the utilization rate of the light source 10. When the deflecting mirror 30 is applied to a vehicle lamp, it can also reduce the overall power consumption of the lamp. Avoiding stray light also prevents areas from being too bright or too dark, ensuring uniform road lighting, giving the lamp a clear cutoff line, guaranteeing a clear field of vision, preventing glare for oncoming drivers, and reducing driver fatigue.

[0099] It should be noted that you should refer to [link / reference]. Figure 7 , Figure 7 yes Figure 2 The diagram shows another structural schematic of the second embodiment of the deflecting mirror 30. The convex deflecting mirror 30, in addition to... Figure 5 Besides being circular or nearly circular in shape, the deflecting mirror 30 can also be rectangular or nearly rectangular. The light-transmitting plate 34 of the deflecting mirror 30 can be a rounded rectangle. The length of each prism unit 31 in the X direction can be the same. The shape of each prism unit 31 can be the same.

[0100] The deflecting mirror body 30 includes a non-working state, a first working state, and a second working state.

[0101] During the use of the vehicle headlight 100, the controller 300 can determine the working status of the vehicle headlight 100, or the controller 300 can receive signals or instructions from the cockpit or other control domains, and based on the instructions of the working status, control the drive device to drive the adjustment component 20 and the adjustment component 20 to move, so that the deflection mirror 30 is in different working states.

[0102] In this embodiment, the deflecting mirror 30 can change its position in the optical path of the light source 10, thereby changing the propagation direction of the light passing through the deflecting mirror 30. This can deflect the light closer to the vehicle body, allowing the light passing through the deflecting mirror 30 to reach an area closer to the vehicle body, thus expanding the field of view of the headlights.

[0103] When the area around a vehicle can be illuminated, it can be used in vehicle welcome scenarios. As the driver approaches the vehicle, the vehicle can illuminate or project patterns into the path the driver is approaching, which not only helps the driver quickly find their vehicle in a dark environment, but also creates a warm atmosphere and optimizes the user experience.

[0104] When a vehicle is in motion, the light emitted by the light source 10 can create a light carpet effect after passing through the deflecting mirror 30. This turning light carpet can predict the vehicle's path in real time. As the vehicle is about to change lanes or turn, the light carpet bends accordingly, clearly indicating the vehicle's intention. This not only helps the driver better understand the vehicle's dynamics but also allows pedestrians and other vehicles to react in advance, preventing collisions.

[0105] Specifically, please refer to Figure 8 , Figure 8 yes Figure 1 The diagram shows the structure of the illuminated area of ​​the vehicle 1000 under different usage scenarios. When the controller 300 determines that the vehicle 1000 needs to illuminate the first preset area 1110, it can control the adjustment component 20 to position the deflecting mirror 30 outside the optical path of the light source 10, thus putting the deflecting mirror 30 in a non-working state. The light from the light source 10 propagates along the first propagation direction. At this time, the area illuminated by the light from the light source 10 is the first preset area 1110. For example, when the deflecting mirror 30 is in a non-working state, the headlights can be in the low beam state during normal driving. The first preset area 1110 can be the area illuminated by the vehicle's low beam headlights.

[0106] When the controller 300 determines that the vehicle 1000 needs to illuminate an area other than the first preset area 1110, the controller 300 can control the adjustment component 20 to change so that the deflecting mirror 30 is located in the optical path of the light source 10. The light-incident surface 3133 of the deflecting mirror 30 faces the light-emitting side of the light source 10, and the serrations of the serrated surface of the deflecting mirror 30 face downward (towards the bottom surface), thereby putting the deflecting mirror 30 into the first working state.

[0107] The deflecting mirror 30 allows some or all of the light to pass through. The light is emitted from the light-emitting surface 3134 of the deflecting mirror 30 and propagates along a second propagation direction, which intersects with the first propagation direction. That is, the second propagation direction and the first propagation direction are different directions. When the deflecting mirror 30 is in the first working state, the area illuminated by the light passing through the deflecting mirror 30 is the second preset area 1120.

[0108] In this embodiment, when the deflecting mirror 30 is in the first working state, the deflecting mirror 30 can illuminate the area in front of the vehicle. Thus, when the driver approaches the vehicle 1000 from the front, it can greet the driver.

[0109] When the deflecting mirror 30 is in the first working state, and the controller 300 determines that the illumination area of ​​the vehicle headlight 100 needs to be shifted to the left or right of the vehicle 1000, the controller 300 can drive the deflecting mirror 30 to rotate via the adjusting component 20, so that the deflecting mirror 30 is in the second working state. The second working state of the deflecting mirror 30 can be understood as the state in which the deflecting mirror 30 is located in the optical path of the light source 10, and the direction of the serrated surface of the deflecting mirror 30 changes relative to its first working state.

[0110] When the deflecting mirror 30 is in the second working state, the area illuminated by the light passing through the deflecting mirror 30 is the third preset area 1130.

[0111] In this embodiment, when the deflecting mirror 30 is in its second working state, it can illuminate areas such as the left front or right front of the vehicle. This allows for a side-facing welcome to the driver approaching the vehicle 1000 from the side of the vehicle.

[0112] In addition, when the light source 10 forms a certain pattern, the headlight 100 can also project onto the side of the vehicle to create an ambient lighting effect, enhancing the user experience. Projecting onto the side of the vehicle also helps illuminate the target lane area when changing lanes, improving driver safety and reducing blind spots.

[0113] When the vehicle 1000 is turning, the deflector 30 can change the direction of light propagation, thereby illuminating the left or right turn lane with the headlights 100 to achieve a turning or side light carpet illumination effect, increasing the user's visibility area when turning in the dark and improving the user's turning safety.

[0114] This application also provides a method for preparing the deflecting mirror body 30. Please refer to [link / reference]. Figure 9 , Figure 9 yes Figure 2 The flowchart illustrates the fabrication method of the deflecting mirror body 30. This fabrication method is applied to the deflecting mirror body 30 described in the above embodiments. The fabrication method includes:

[0115] S100: Form a prism unit 31, wherein the peripheral surface of the prism unit 31 includes an incident light surface 3133 and an exit light surface 3134. The incident light surface 3133 and the exit light surface 3134 are arranged opposite to each other in a first direction. The incident light surface 3133 is inclined relative to the exit light surface 3134. The first direction is the thickness direction of the prism unit 31.

[0116] Among them, the prism unit 31 can be formed into a strip-shaped mirror with a trapezoidal cross-section by cold working.

[0117] S200: Multiple prism units 31 are connected to form a deflecting mirror body 30, wherein the multiple prism units 31 are connected sequentially in a second direction. The second direction is the width direction of the prism units 31. The light-incident surfaces 3133 of the multiple prism units 31 are flush.

[0118] Specifically, the light-emitting surfaces 3134 of multiple prism units 31 can be attached to a planar auxiliary fixture so that the light-emitting surfaces 3134 of multiple prism units 31 are set flush.

[0119] The preparation method provided in this application does not require direct cutting of the corner position of the deflection mirror body 30. Therefore, the preparation method can be applied not only to the processing of deflection mirror bodies 30 made of plastic materials, but also to the processing of deflection mirror bodies 30 made of glass materials.

[0120] For example, after forming the prism unit 31 and before connecting the plurality of prism units 31, the method further includes:

[0121] S110: Form a light-shielding layer 33, wherein the prism unit 31 further includes a first connecting surface 3131 and a second connecting surface 3132, the first connecting surface 3131 and the second connecting surface 3132 are opposite to each other in a second direction, the first connecting surface 3131 and the second connecting surface 3132 are connected between the light-incident surface 3133 and the light-exit surface 3134, and the light-shielding layer 33 covers the first connecting surface 3131 and the second connecting surface 3132.

[0122] The light-shielding layer 33 can be an ink layer. The ink layer can be applied to the first connecting surface 3131, the second connecting surface 3132, the first end surface 311, and the second end surface 312 and then baked and cured.

[0123] Regarding the substrate, S200: connecting multiple prism units 31 to form a deflecting mirror body 30 includes:

[0124] Step 1: Provide a light-transmitting plate 34, which includes a mounting surface 341;

[0125] Step 2: Connect the light-emitting surfaces 3134 of the multiple prism units 31 to the mounting surface 341 of the light-transmitting plate 34;

[0126] Step 3: A light-shielding layer 33 is formed in the area of ​​the mounting surface 341 exposed relative to the prism unit 31, forming a deflecting mirror body 30.

[0127] In one possible design, this application also provides a projection device. The projection device in this application embodiment may include a processor capable of executing computer-executed instructions, a light source 10, and a deflecting mirror 30 as described above. The processor is capable of controlling the movement of the deflecting mirror 30 relative to the light-emitting side of the light source 10.

[0128] The above are exemplary embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A deflecting mirror body, characterized in that, The device includes multiple prism units, each prism unit having an incident light surface and an exit light surface. The incident light surface and the exit light surface are arranged opposite to each other in a first direction, and the incident light surface is inclined relative to the exit light surface. The first direction is the thickness direction of the prism unit. The multiple prism units are connected sequentially in a second direction, which is the width direction of the prism unit. The incident light surfaces of the multiple prism units are flush.

2. The deflecting mirror body according to claim 1, characterized in that, The deflecting mirror body also includes a light-transmitting plate, and the light-incident surface of each prism unit is connected to the light-transmitting plate.

3. The deflecting mirror body according to claim 2, characterized in that, The deflecting mirror body also includes a first connector, which connects the light-incident surface of the prism unit to the light-transmitting plate.

4. The deflecting mirror body according to any one of claims 1-3, characterized in that, The peripheral surface of the prism unit also includes a first connecting surface and a second connecting surface, the first connecting surface and the second connecting surface are opposite to each other in the second direction, and the first connecting surface and the second connecting surface are connected between the light-incident surface and the light-outceasing surface; The deflecting mirror body also includes a second connector, which connects a first connecting surface of one of the prism units and a second connecting surface of an adjacent prism unit.

5. The deflecting mirror body according to claim 2 or 3, characterized in that, The deflecting mirror body also includes a light-shielding layer, and the light-transmitting plate includes a mounting surface. The mounting surface is connected to the prism unit, and the area of ​​the mounting surface exposed relative to the prism unit is provided with a light-shielding layer.

6. The deflecting mirror body according to claim 4, characterized in that, The deflecting mirror body also includes a light-shielding layer, which covers the first connecting surface and the second connecting surface.

7. The deflecting mirror body according to claim 6, characterized in that, The prism unit further includes a first end face and a second end face, the first end face and the second end face being opposite to each other along the length direction of the prism unit, and the light-shielding layer also covering the first end face and the second end face.

8. The deflecting mirror body according to claim 5, characterized in that, The end face of the prism unit is recessed relative to the circumferential surface of the light-transmitting plate.

9. A vehicle light, characterized in that, It includes a light source and a deflecting mirror as described in any one of claims 1-8, wherein the light-emitting surface of the light source is opposite to the light-incident surface of the deflecting mirror, and the position of the deflecting mirror can change relative to the light-emitting side of the light source.

10. A means of transportation, characterized in that, It includes a vehicle body and a vehicle light as described in claim 9, the vehicle light being mounted on the vehicle body.

11. A projection device, characterized in that, It includes a processor, a light source, and a deflecting mirror as described in any one of claims 1-8, wherein the processor is capable of controlling the movement of the deflecting mirror relative to the light-emitting side of the light source.

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