Optical module, vehicle lamp and vehicle
By using a focal-free lens design to independently adjust the light within the optical module, the problems of uneven brightness and high installation precision caused by traditional focal lenses are solved, achieving uniform light shape, soft edges, high luminous efficiency, and space saving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-03-31
AI Technical Summary
In traditional high and low beam systems, the focal lens causes uneven beam brightness and sharp beam boundaries, and requires high installation precision and occupies a large amount of space in the front of the vehicle.
The design employs a focalless lens, which uses a non-parallel structure of the cylindrical generatrices of the second and first lenses to adjust the light in two independent directions, forming a focalless light pattern, reducing the installation accuracy requirements and shortening the length of the optical module.
It achieves uniform light pattern color and soft light pattern boundaries, improves luminous efficiency and imaging quality, and reduces the space occupied by the optical module at the front of the vehicle.
Smart Images
Figure CN224065294U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle lighting, and more particularly to an optical module, a headlight, and a vehicle. Background Technology
[0002] Traditional high and low beam systems primarily employ focal lenses, which have a clearly defined focal point, aiding in projected imaging. However, in practical applications with automotive headlights, significant brightness differences and color uniformity exist between different parts of the projected light pattern, and the light pattern boundaries formed by the lens projection are typically quite sharp. Furthermore, existing optical systems require high precision in the installation position between the lens focal point and the reflector; even slight deviations can lead to light pattern distortion or reduced uniformity. Additionally, in focal lens systems, the module length must be at least the sum of the reflector's focal length and the lens's focal length, necessitating a substantial amount of depth space at the front of the vehicle. Utility Model Content
[0003] This application aims to solve at least one of the technical problems existing in the prior art, and to provide an optical module, a vehicle light, and a vehicle.
[0004] According to one aspect of this application, an optical module is provided, comprising:
[0005] The low beam adjustment unit is configured to adjust the emitted low beam towards the light-emitting side;
[0006] The second lens is disposed on the light-emitting side of the near beam adjustment section. The second lens has a second light-incident surface and a second light-emitting surface disposed opposite to each other.
[0007] The second light-incident surface has a second cylindrical surface for converging light rays in a second direction perpendicular to the generatrix of the second cylindrical surface, the light rays being converged between the second lens and the first lens and diffused to the first lens;
[0008] A first lens is disposed on the light-emitting side of the second lens. The first lens includes a first cylindrical surface for converging light rays in a first direction perpendicular to the generatrix of the first cylindrical surface.
[0009] The generatrix of the second cylindrical surface is not parallel to the generatrix of the first cylindrical surface, and the second lens and the first lens are both focal-free lenses.
[0010] In some embodiments, the angle between the generatrix of the second cylinder and the generatrix of the first cylinder is between 80° and 90°.
[0011] In some embodiments, the angle between the generatrix of the second cylinder and the generatrix of the first cylinder is between 85° and 89°.
[0012] In some embodiments, the low beam adjustment unit includes a low beam adjustment surface and a low beam light source. The low beam adjustment surface has at least two focal points. The low beam light source is disposed at or near a first focal point of the low beam adjustment surface. The second focal point of the low beam adjustment surface is located between the second lens and the first lens and is configured to adjust the light emitted by the low beam light source to be directed between the second lens and the first lens.
[0013] In some embodiments, the low beam adjustment surface and the low beam light source adapted to the low beam adjustment surface are provided in two or more sets, and each of the low beam adjustment surfaces is respectively provided corresponding to each of the second column surfaces.
[0014] In some embodiments, the second light-incident surface includes two or more second cylindrical surfaces, each of the second cylindrical surfaces being arranged in a direction intersecting the light-emitting direction of the near beam adjustment section, and the extension direction of the generatrix of each of the second cylindrical surfaces being substantially the same.
[0015] In some embodiments, the first lens includes a first light-incident surface and a first light-outcrystal surface arranged sequentially along the light-outcrystal direction of the near beam adjustment section. The first light-outcrystal surface is a first cylindrical surface, used to converge light rays in a first direction perpendicular to the generatrix of the first cylindrical surface.
[0016] In some embodiments, the first lens extends in a direction intersecting the light emission direction of the near beam adjustment section, for allowing light rays converged and diffused by each of the second cylindrical surfaces to pass through, and for converging the light rays in a first direction.
[0017] According to another aspect of this application, a vehicle lamp is provided, including any of the optical modules described above.
[0018] According to another aspect of this application, a vehicle is provided, including the aforementioned vehicle lights.
[0019] The beneficial effects of this application will be specifically described in conjunction with the following accompanying drawings and detailed embodiments. Attached Figure Description
[0020] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.
[0021] Figure 1 This is a schematic diagram of the structure and light output of an optical module provided in an embodiment of this application.
[0022] Figure 2 This is a schematic diagram of the low beam adjustment section provided in the embodiments of this application.
[0023] Figure 3 yes Figure 1 A schematic diagram of the simulated optical path of the provided optical module from an upward viewing angle;
[0024] In the diagram: a) Locating pin;
[0025] 10. First lens; 111. First incident surface; 112. First exit surface; 1121. First cylindrical surface;
[0026] 20. Second lens; 21. Second incident surface; 211. Second cylindrical surface; 22. Second exit surface;
[0027] 30. Low beam adjustment unit; 3-1. Low beam adjustment surface; 3-2. Low beam source. Detailed Implementation
[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0030] Regarding the concept of a cylindrical surface mentioned in this application: A cylindrical surface is a surface formed by moving a straight line parallel to a fixed curve, that is, a surface formed by moving a moving straight line parallel to a fixed curve. The moving straight line is called the generatrix of the cylindrical surface, and the fixed curve is called the directrix of the cylindrical surface. Figure 3 Taking the second cylinder 211 as an example, the generatrix of the second cylinder 211 extends approximately perpendicular to the plane of the paper, and the directrix of the second cylinder 211 is... Figure 3 The arc-shaped curve parallel to the paper is shown. The second cylindrical surface 211 can also be regarded as being stretched from the directrix along the normal of the plane containing the directrix, and the normal is parallel to the extension direction of the generatrix of the second cylindrical surface 211.
[0031] Traditional high and low beam systems primarily employ focal lenses, which have a clearly defined focal point, aiding in image projection. However, the applicant discovered that the focal lens structure, due to the distinct focus and non-focus areas, easily leads to significant brightness variations and color inconsistencies in different parts of the beam pattern when adjusting the light. Furthermore, because the lens focal point is located at the light source or reflector, the boundary of the beam pattern formed by its direct projection onto the light source or reflector is typically quite sharp. Moreover, existing optical systems require high precision in the installation position between the lens focal point and the reflector; even slight deviations can cause beam pattern distortion or reduced uniformity. Additionally, the module length must be calculated by combining the focal lengths of the reflector and the lens, necessitating sufficient depth space at the front of the vehicle.
[0032] To solve the above technical problems, refer to Figures 1-3 This application provides an optical module, including:
[0033] The low beam adjustment unit 30 is configured to adjust the emitted low beam toward the light-emitting side;
[0034] The second lens 20 is disposed on the light-emitting side of the near beam adjustment section 30; the second lens 20 has a second light-incident surface 21 and a second light-emitting surface 22 disposed opposite to each other;
[0035] The second light-incident surface 21 has a second cylindrical surface 211, which is used to converge light in a second direction perpendicular to the generatrix of the second cylindrical surface 211 to the space between the second lens 20 and the first lens 10 and to diffuse it to the first lens 10.
[0036] A first lens 10 is disposed on the light-emitting side of the second lens. The first lens 10 includes a first cylindrical surface 1121 for converging light rays in a first direction perpendicular to the generatrix of the first cylindrical surface 1121.
[0037] The generatrix of the second cylindrical surface 211 and the generatrix of the first cylindrical surface 1121 are not parallel to each other (for example, the included angle is 70°-90°), and both the second lens 20 and the first lens 10 are focalless lenses.
[0038] Specifically, the low beam adjustment unit adjusts the emitted low beam towards the light-emitting side and directs it onto the second cylindrical surface 211. The second cylindrical surface 211 is positioned in a second direction perpendicular to its generatrix. Figure 1 The direction within the horizontal plane shown in the viewpoint) after the light is horizontally converged and expanded, which is beneficial for converging the light and increasing the illumination width range; then, the first cylindrical surface 1121 in the first direction perpendicular to the generatrix of the first cylindrical surface 1121 ( Figure 1 The direction within the vertical plane shown in the viewpoint allows the light to converge vertically, thus adjusting the near beam in two independent directions to form a near beam pattern.
[0039] In this application, the afocal lens is also called a non-focal lens. Since the second cylindrical surface 211 of the second lens 20 and the first cylindrical surface 1121 of the first lens 10 are respectively adjusted to increase and change the curvature, etc., to form a structure without a focal point, compared with traditional lenses, they do not have a focal point or a focal area, and are not obviously focused. Therefore, compared with the prior art, it can avoid the problem that the focal lens will obviously concentrate the projected light when adjusting the light, resulting in very concentrated local brightness of the light pattern, as well as uneven brightness and color in different parts. The light pattern color and brightness displayed in this embodiment are more uniform, and the formed light pattern boundary is softer. Furthermore, since there is no focal point, its design tolerance is large and the installation position accuracy requirements of the matching dimming module are low.
[0040] This application reduces aberrations and dispersion problems in the formed light pattern by independently adjusting the light pattern in multiple directions without focusing, which is beneficial to improving image quality.
[0041] Furthermore, since the second cylindrical surface 211 converges the light into the area between the second lens 20 and the first lens 10 within the plane of its collimation, it avoids the light from converging into the plastic lens or the lamp housing in front of the first lens 10, which would cause the lamp body temperature to rise. By deflecting and converging the light at a large angle into the area between the second lens 20 and the first lens 10, the beam width reaching the first lens 10 after convergence and intersection is very small, allowing almost all of it to enter the first lens 10 and preventing leakage from the side edges in the horizontal width direction of the first lens 10. In this case, even if the horizontal width of the first lens 10 is designed to be smaller, it is sufficient for the light to enter. Compared with traditional lenses that collimate and converge light, the luminous efficiency is higher and it is beneficial for the small size design of the first lens 10. The light converges and exits between the second lens 20 and the first lens 10, and the final exit beam pattern also has a small horizontal width, resulting in more focused light emission and imaging.
[0042] Since the second lens 20 and the first lens 10 have no focal point, they do not need to be strictly sized and positioned in the light-emitting direction with the low beam adjustment unit 30. Unlike traditional solutions, the focal lengths of the reflector and the lens do not need to be superimposed. The low beam adjustment unit 30 can be set as close as possible to the second lens 20, thereby reducing the length of the entire optical module in the light-emitting direction. The length can be as short as 20mm or less, avoiding encroachment on the front space of the vehicle.
[0043] refer to Figure 3 In some embodiments, the angle between the generatrix of the second cylindrical surface 211 and the generatrix of the first cylindrical surface 1121 is between 80° and 90°.
[0044] Specifically, the angle between the generatrix of the second cylindrical surface 211 and the generatrix of the first cylindrical surface 1121 is between 80° and 90°. That is, the first direction of the light accelerator adjusted by the first lens 10 and the second direction of the light accelerator adjusted by the second lens 20 are perpendicular or nearly perpendicular to each other. It has been verified that an angle between 80° and 90° is conducive to forming a near-beam pattern, and the displayed light pattern has uniform color and brightness, and the boundary of the near-beam cutoff line is soft. Furthermore, since the angle can be adjusted within the range, its design tolerance is large and the accuracy requirements for the matching installation position between the first lens 10 and the second lens 20 are low.
[0045] refer to Figure 3 In some embodiments, the angle between the generatrix of the second cylindrical surface 211 and the generatrix of the first cylindrical surface 1121 is between 85° and 89°.
[0046] Specifically, when the included angle value is within this range, the resulting near beam pattern can be closer to an ellipse or rectangle, while the displayed light pattern color and brightness are uniform, and the resulting near beam cutoff line boundary is soft.
[0047] In some embodiments, the low beam adjustment unit includes a low beam adjustment surface 3-1 and a low beam light source 3-2. The low beam adjustment surface 3-1 has at least two focal points. The low beam light source 3-2 is disposed at or near the first focal point of the low beam adjustment surface 3-1. The second focal point of the low beam adjustment surface 3-1 is located between the second lens 20 and the first lens 10.
[0048] Specifically, the second focal point is located between the second lens 20 and the first lens 10. The near light adjustment surface 3-1 can converge the light emitted from the near light source to the space between the second lens 20 and the first lens 10 and diffuse it. After the convergence and intersection, the beam width reaching the first lens 10 is very small, and almost all of it can enter the first lens 10. In this case, even if the size of the first lens 10 perpendicular to the light output direction is smaller, it is still sufficient for light to enter. Compared with traditional technology, the luminous efficiency is higher and it is beneficial to the small size design of the first lens 10.
[0049] In this embodiment, the optical design only needs to consider the length between the two focal points of the near beam adjustment surface 3-1, which helps to reduce the length of the entire optical module in the light output direction.
[0050] It is worth noting that the near beam adjustment surface with two focal points can be an ellipsoid, or a non-standard ellipsoid with surface shape adjustment based on an ellipsoid, as long as it has two focal points.
[0051] It is worth noting that the specific form of the light source in this application includes, but is not limited to, LED beads, LED boards containing circuit boards, etc. For example... Figure 1 and Figure 3The mid-to-low beam light source 3-2 is in the form of a lamp panel. The lamp panel is assembled and fixed to the low beam adjustment unit 30 by a positioning pin a.
[0052] refer to Figure 3 In some embodiments, the second light-incident surface 21 includes two or more second cylindrical surfaces 211, each of the second cylindrical surfaces 211 being arranged in a direction intersecting the light-emitting direction of the near beam adjustment section 30, and the extension direction of the generatrix of each of the second cylindrical surfaces 211 being substantially the same.
[0053] Specifically, two or more second cylindrical surfaces 211 are arranged side by side, which can match the width of the extended light pattern in the arrangement direction. Since each second cylindrical surface 211 has no focal point, the displayed extended light pattern has uniform color and brightness, and the near-beam cutoff line boundary of the formed extended light pattern is soft. The extension direction of the generatrix of each second cylindrical surface 211 is basically consistent, which means that the extension direction of the generatrix of the second cylindrical surface 211 is completely consistent, or there may be slight deviations due to errors, etc.
[0054] refer to Figure 3 In some embodiments, the low beam adjustment surface 3-1 and the low beam light source 3-2 adapted to the low beam adjustment surface 3-1 are provided in two or more sets, and each of the low beam adjustment surfaces 3-1 is respectively provided corresponding to each of the second cylindrical surfaces 211.
[0055] Specifically, each near beam adjustment surface 3-1 is matched with each second cylindrical surface 211 to ensure that each second cylindrical surface 211 has light rays of basically the same energy, and the brightness parameters of the light pattern formed by each second cylindrical surface 211 are basically the same, so that the brightness of the overall extended light pattern in different parts can also be guaranteed to be uniform.
[0056] It is worth noting that when multiple low-beam light sources 3-2 are all in the form of light panels, the light panels are connected to form... Figure 3 The entire light panel structure.
[0057] refer to Figure 3 In some embodiments, the first lens 10 includes a first light-incident surface 111 and a first light-outcrystal surface 112 arranged sequentially along the light-outcrystal direction of the near beam adjustment section 30. The first light-outcrystal surface 112 is a first cylindrical surface 1121, which is used to converge light in a first direction perpendicular to the generatrix of the first cylindrical surface 1121.
[0058] Specifically, the first cylindrical surface 1121 can be formed on the first light-incident surface 111 and / or the first light-exiting surface 112. In this embodiment, it is preferably formed on the first light-exiting surface 112, which can meet the external curved surface shape requirements of the headlight.
[0059] refer to Figure 3In some embodiments, the first lens 10 extends in a direction intersecting with the light emission direction of the near beam adjustment section 30, for allowing light rays that have been converged and diffused by each of the second cylindrical surfaces 211 to pass through and for converging the light rays.
[0060] Specifically, the extension direction of the first lens 10 is not strictly limited, as long as it extends in the direction intersecting with the light output direction of the low beam adjustment unit 30. Due to the flexibility in setting the extension direction, it has a large design tolerance, lower requirements for the matching installation position accuracy between the first lens 10 and the second lens 20, and can adapt to different headlight surface shape requirements.
[0061] On the other hand, this application also relates to a vehicle light, including the aforementioned optical module.
[0062] On the other hand, this application also relates to a vehicle including the aforementioned headlights.
[0063] Using the technical solution provided in the embodiments of this application, the vehicle and headlights include the aforementioned optical module, and thus have the same effect as the aforementioned optical module, which will not be elaborated here.
[0064] In the various embodiments of this application, unless otherwise specified or logically conflicting, the terminology or descriptions between different embodiments are consistent and can be referenced mutually. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. In this application, "at least one" means one or more, and "more than one" means two or more.
[0065] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.
[0066] The optical module, vehicle light, and vehicle provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. An optical module characterized by comprising: The application relates to a low-beam optical module. The low-beam adjusting part is configured to adjust low-beam light rays to the light-emitting side; The second lens is arranged on the light-emitting side of the low-beam adjusting part, and the second lens has a second light-entering surface and a second light-emitting surface arranged oppositely, the second light-entering surface has a second cylindrical surface for converging light rays in a second direction perpendicular to the second cylindrical surface generatrix, and the light rays are converged to the space between the second lens and the first lens and diffused to the first lens; The first lens is arranged on the light-emitting side of the second lens, and the first lens comprises a first cylindrical surface for converging light rays in a first direction perpendicular to the first cylindrical surface generatrix; The generatrix of the second cylindrical surface and the generatrix of the first cylindrical surface are not parallel, and the second lens and the first lens are both afocal lenses.
2. The optical module according to claim 1, wherein The included angle between the generatrix of the second cylindrical surface and the generatrix of the first cylindrical surface is between 80 DEG and 90 DEG.
3. The optical module according to claim 1, wherein The included angle between the generatrix of the second cylindrical surface and the generatrix of the first cylindrical surface is between 85 DEG and 89 DEG.
4. The optical module according to claim 1, wherein The low-beam adjusting part comprises a low-beam adjusting surface and a low-beam light source, the low-beam adjusting surface has at least two focal points, and the low-beam light source is arranged at or near the first focal point of the low-beam adjusting surface; The second focal point of the low-beam adjusting surface is located between the second lens and the first lens, and is configured to adjust the light rays emitted by the low-beam light source to be emitted between the second lens and the first lens.
5. The optical module according to claim 4, wherein The low-beam adjusting surface and the low-beam light source matched with the low-beam adjusting surface are arranged in two groups or more, and each low-beam adjusting surface is arranged corresponding to each second cylindrical surface.
6. The optical module according to claim 1, wherein The second light-entering surface comprises two or more second cylindrical surfaces, each second cylindrical surface is arranged in a direction intersecting the light-emitting direction of the low-beam adjusting part, and the extension direction of the generatrix of each second cylindrical surface is basically consistent.
7. The optical module of claim 1, wherein The first lens comprises a first light-entering surface and a first light-emitting surface arranged in sequence along the light-emitting direction of the low-beam adjusting part, and the first light-emitting surface is a first cylindrical surface for converging light rays in a first direction perpendicular to the first cylindrical surface generatrix.
8. The optical module of claim 1, wherein The first lens is arranged in extension in a direction intersecting the light-emitting direction of the low-beam adjusting part, for passing the light rays converged and diffused by each second cylindrical surface and converging the light rays in the first direction.
9. A vehicle lamp characterized by The application relates to a low-beam optical module.
10. A vehicle characterized by comprising: The application relates to a low-beam optical module.