Low beam module, vehicle lamp and vehicle

Abstract

The utility model discloses a low beam module, car light and vehicle relates to vehicle lighting technical field. Low beam module includes: first low beam lens, the light exit surface of first low beam lens is first curved surface, and first curved surface protrudes towards the light direction and has first focal line, second low beam lens, the light entrance surface of second low beam lens is the second curved surface of protruding setting towards first curved surface, and second curved surface has second focal line, and first focal line and second focal line are perpendicular. This low beam module, by splitting the traditional single focus lens into the first low beam lens with first curved surface and the second low beam lens with second curved surface, two curved surfaces processing do not influence each other, in the limited space, it is easy to obtain the low beam width greater and the low beam light efficiency brightness stronger.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting technology, specifically to a low beam module, a headlight, and a vehicle. Background Technology

[0002] In general, the low beam module of automotive headlights uses an integrated lens structure, which results in insufficient brightness and width of the low beam, making it difficult to improve, and it is prone to solar focusing problems. The low beam uses a single-focus lens, which easily produces severe colored stripes at the cutoff line between the bright and dark areas, usually requiring the focal length of the outer lens to be adjusted to be out of focus to improve this.

[0003] To address the aforementioned issues, there is a need to improve the structure of the low beam module. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a low beam module that can not only facilitate the improvement of low beam width, but also improve the brightness of the low beam.

[0005] This invention also aims to provide vehicle lights and vehicles having the aforementioned low beam module.

[0006] According to an embodiment of the utility model, a low beam module includes: a first low beam lens, the light-emitting surface of the first low beam lens being a first curved surface, the first curved surface protruding in the light-emitting direction and having a first focal line; and a second low beam lens, the light-receiving surface of the second low beam lens being a second curved surface protruding in the direction of the first curved surface, the second curved surface having a second focal line. Specifically, the first focal line and the second focal line are perpendicular to each other.

[0007] According to the utility model embodiment, the low beam module splits a traditional single-focus lens into a first low beam lens with a first curved surface and a second low beam lens with a second curved surface. The processing of the two curved surfaces does not affect each other, and the resulting focal length is smaller than that of the traditional lens. By utilizing the principle that the smaller the focal length, the larger the image, it is easy to obtain a wider low beam width and stronger low beam brightness in a limited space.

[0008] In some embodiments, in the low beam module, the focal length of the first curved surface is smaller than the focal length of the second curved surface.

[0009] In some embodiments, the light-emitting surface of the first low-light lens includes at least two first curved surfaces, which are arranged side by side along the extension direction of the second focal line.

[0010] In some embodiments, the first low-light lens is further provided with a V-shaped groove, which is located on the low-light side of the first curved surface and is arranged along the extension direction of the second focal line.

[0011] In some embodiments, the low beam module further includes a condenser disposed on the low beam side of the first low beam lens.

[0012] In some embodiments, the low beam module has multiple condensers arranged side-by-side along the extension direction of the second focal line, and the multiple condensers correspond one-to-one with the multiple first curved surfaces.

[0013] In some embodiments, the low beam module has the condenser integrally formed with the first low beam lens.

[0014] The vehicle headlight according to the utility model embodiment includes the low beam module described in the above embodiment.

[0015] In some embodiments, the headlights further include a high beam module and / or an adaptive high beam module, wherein the adaptive high beam module and / or the high beam module are disposed on one side of the low beam module.

[0016] The vehicle according to the utility model embodiment includes the headlights described in the above embodiment or includes a high beam module and / or an ADB module.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 A perspective view of the low beam module of some embodiments of this utility model from one direction; Figure 2 This is a perspective view of the low beam module of some embodiments of this utility model from another direction; Figure 3 This is a layout diagram of the module inside the headlight in some embodiments of this utility model.

[0019] Figure label: Car lights 100 Low beam module 10, focus P, First low-beam lens 1, first curved surface 11, first focal line 12 Second low-beam lens 2, second curved surface 21, second focal line 22 3. V-groove; 4. Concentrator; 5. First light source High beam module 20. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following is for reference. Figures 1-2 Description of the low beam module 10 according to an embodiment of the present utility model.

[0023] According to the low beam module 10 of the utility model embodiment, referring to... Figure 1 and Figure 2 It includes: a first low beam lens 1 and a second low beam lens 2. The light-emitting surface of the first low beam lens 1 is a first curved surface 11, which protrudes in the light-emitting direction and has a first focal line 12. The light-receiving surface of the second low beam lens 2 is a second curved surface 21 that protrudes in the first curved surface 11 and has a second focal line 22.

[0024] The first focal line 12 and the second focal line 22 are perpendicular. (For ease of description, please refer to...) Figure 1The direction of the first focal line 12 is referred to as the Y direction, and the direction of the second focal line 22 is referred to as the X direction. The actual orientation of the X and Y directions on the vehicle is not limited; the X direction can be the width direction of the vehicle, and the Y direction can be the height direction. In this case, the first low beam lens 1 and the second low beam lens 2 are arranged along the Z direction, which is the front-rear direction of the vehicle. Of course, the X direction can also be deflected by a certain angle relative to the left-right direction of the vehicle, and the Y direction can also be deflected by a certain angle relative to the height direction of the vehicle. Even the X and Y directions can be interchanged. Here, the specific orientation of the low beam module 10 after its application to the vehicle is not limited. For ease of understanding, the following explanations will use the X direction as the width direction of the vehicle, the Y direction as the height direction, and the Z direction as the front-rear direction of the vehicle as examples.

[0025] Specifically, the low beam module 10 also includes a first light source 5. The light from the first light source 5 enters the first low beam lens 1, exits from the first curved surface 11 of the first low beam lens 1, then enters the second low beam lens 2 from the second curved surface 21, and then exits from the light-emitting surface of the second low beam lens 2 to form low beam. Optionally, the first light source 5 is an LED light, an LCD light, etc.

[0026] It is understandable that the light-emitting surface (i.e., the first curved surface 11) of the first low-light lens 1 is not a plane, nor is it a spherical or quasi-spherical surface like that of a traditional single-focus lens, but rather a cylindrical or quasi-cylindrical shape. In other words, the first low-light lens 1 forms a cylindrical lens on the light-emitting side. The light-emitting surface (i.e., the first curved surface 11) of the first low-light lens 1 has a first focal line 12 extending along the Y direction, thus exhibiting a degree of convergence along the X direction. That is, when light rays from the first low-light lens 1 exit the first curved surface 11 along the Z direction, the first curved surface 11 deflects the light rays towards the X-axis. In a traditional spherical lens, light rays deflect and intersect at a single point when passing through the sphere; this point is the focal point. In a cylindrical lens, light rays deflect and intersect at a straight line when passing through the cylinder; this line is called the focal line.

[0027] Similarly, the light-gathering surface (i.e., the second curved surface 21) of the second low-light lens 2 is cylindrical or near-cylindrical in shape, and the second low-light lens 2 forms a cylindrical lens on the light-gathering side. The light-gathering surface (i.e., the second curved surface 21) of the second low-light lens 2 has a second focal line 22 extending along the X direction, and therefore has a degree of convergence along the Y direction. That is to say, when light rays in the second low-light lens 2 enter the second curved surface 21 along the Z direction, the second curved surface 21 deflects the light rays toward the Y-axis direction.

[0028] Specifically, such as Figure 1 As shown, the intersection of the first focal line 12 and the second focal line 22 is the focal point P of the low beam module 10. In some specific embodiments, the first curved surface 11 is arranged in multiple ways along the X direction, thus obtaining multiple first focal lines 12, and the intersection of each first focal line 12 and the second focal line 22 forms a focal point P.

[0029] To facilitate understanding of the scheme, assume the incident light from the module is parallel light. This parallel light is converged into a Y-direction ray by the first curved surface 11 along the X-direction, and this Y-direction ray is then converged into a single point by the second curved surface 21 along the Y-direction. The final result is monofocal light, and the light effect produced by the module is similar to that of a traditional monofocal lens. Therefore, it can be said that this application's scheme splits the monofocal lens of a traditional low-beam module into two cylindrical lenses. It is understood that the smaller the focal length of the lens, the larger the image. This application's scheme uses a combination of a first low-beam lens 1 and a second low-beam lens 2. Compared to a traditional monofocal lens, the two lenses are manufactured separately, and their curvature radii are independent of each other, thus facilitating manufacturing according to the required focal length. By adjusting either the first curved surface 11 or the second curved surface 22, and then adjusting the spacing, the overall width and brightness of the low beam can be simultaneously improved.

[0030] In this design, the first focal line 12 of the first low-beam lens 1 is set along the Y-axis, and the focal length of the first low-beam lens 1 determines the convergence degree of the beam in the horizontal direction. According to paraxial optics, when the first low-beam lens 1 is closer to the light source along the optical axis (Z-axis), the distance to the object decreases, the image distance increases, and the horizontal magnification increases. Therefore, the beam emitted by the first light source 5 is further "widened" in the horizontal direction, the lateral widening angle of the first low-beam lens 1 increases, and the lane edge illumination of the vehicle is significantly improved. Conversely, when the first low-beam lens 1 is farther away from the light source along the optical axis (Z-axis), the distance to the object increases, the image distance decreases, the horizontal magnification decreases, the emitted beam is "shortened" in the horizontal direction, the lateral widening angle of the first low-beam lens 1 decreases, and the lane edge illumination of the vehicle decreases.

[0031] The second focal line 22 of the second low-beam lens 2 is set along the X-axis. It is a cylindrical lens with a horizontally set generatrix, exhibiting convergence only in the vertical direction (Y-axis), specifically responsible for controlling the vertical cutoff and longitudinal brightness distribution of the light pattern. The focal line direction of the second low-beam lens 2 is horizontal (X-axis), and its focal length determines the degree of beam convergence in the vertical direction. According to paraxial optics, when the second low-beam lens 2 approaches the first light source 5 along the optical axis (Z-axis), the distance to the object decreases, the image distance increases, and the vertical magnification increases accordingly. Therefore, the light beam emitted by the first light source 5 is further "stretched" vertically, increasing the vertical width of the light pattern, allowing for illumination of closer areas in front of the vehicle while it is moving. Conversely, when the second low-beam lens 2 moves away from the first light source 5 along the optical axis (Z-axis), the distance to the object increases, the image distance decreases, the vertical magnification decreases, and the brightness increases. Therefore, the beam emitted by the first light source 5 is "shrunken" in the vertical direction, reducing the vertical width of the beam pattern and increasing the overall brightness of the low beam pattern. When the vehicle is in motion, the vehicle headlights can illuminate a greater distance.

[0032] According to the utility model embodiment, the low beam module 10 splits a traditional monofocal lens into a first low beam lens 1 with a first curved surface 11 and a second low beam lens 2 with a second curved surface 21. The processing of the two curved surfaces does not affect each other, resulting in a smaller focal length compared to traditional lenses. Utilizing the principle that a smaller focal length results in a larger image, the obtained low beam width is increased. Furthermore, with a larger width, light is focused in the height direction, thereby effectively improving the overall brightness of the low beam. Compared to a monofocal lens with equivalent light efficiency, this low beam module 10 can effectively reduce the overall weight.

[0033] In addition, since the monofocal lens is split into a first low-light lens 1 and a second low-light lens 2, it is less likely to produce severe color stripes at the near-light cutoff line, and it is also less likely to cause solar focusing problems.

[0034] In existing technologies, multiple single-focus lenses are used to extend the low beam width, resulting in poor overall module appearance consistency. The solution in this application improves the low beam width by combining a first low beam lens 1 and a second low beam lens 2, avoiding the use of multi-focus lenses and thus improving module appearance consistency.

[0035] The low beam module 10 of this application, by having two optical surfaces separated, allows for flexible control of the optical system length and improves overall heat dissipation efficiency when used in conjunction with other lighting systems.

[0036] In some embodiments of the low beam module 10, the focal length of the first curved surface 11 is less than the focal length of the second curved surface 21. It is understood that the smaller the focal length, the larger the final low beam width, and the focal length is determined by the curvature of the curved surface.

[0037] In this application, to achieve a wider low-beam performance, the focal length of the first curved surface 11 can be set to be smaller, while the focal length of the second curved surface 21 can be set to be larger. Since the first curved surface 11 is located on the low-beam side of the second curved surface 21 from the external viewing angle of the module, the second low-beam lens 2 will block the first low-beam lens 1, making it easier for external personnel to see the gentle second curved surface 21, and ensuring the aesthetics and consistency of the appearance.

[0038] Specifically, according to low beam regulations, the distance reached by the aforementioned low beam pattern is required to be around 50m. Therefore, the widening angle controlled by the first low beam lens 1 generally needs to reach 20°~30°. To achieve such a large deflection angle, the first low beam lens 1 requires a cylindrical lens with a relatively short focal length to complete the refraction within the refraction; otherwise, secondary optical components must be added, which would increase the size and cost of the low beam module.

[0039] The second low-light lens 2 only needs to form a 1°~1.5° cutoff between light and dark and a 2°~3° longitudinal uniform area in the vertical direction. The deflection angle required by the second low-light lens 2 is smaller than that of the first low-light lens 1.

[0040] In some embodiments, such as Figure 1 As shown, the light-emitting surface of the first low-beam lens 1 includes at least two first curved surfaces 11, which are arranged side-by-side along the extension direction of the second focal line 22. This arrangement allows for a smaller focal length of the first curved surfaces 11 within a limited width range to achieve a wider low-beam effect. Simultaneously, arranging multiple first curved surfaces 11 side-by-side along the X-direction facilitates closer proximity to more light sources, allowing more light to be emitted as low beam. This improves low-beam brightness.

[0041] Specifically, each first curved surface 11 can be defocused or changed into a free-form surface by adjusting the X-direction focal line optical surface, which can be used to widen or brighten the road illumination distribution.

[0042] In some embodiments, such as Figure 1 As shown, the first low-light lens 1 is also provided with a V-shaped groove 3, which is located on the low-light side of the first curved surface 11 and is arranged along the extension direction of the second focal line 22.

[0043] In this design, a V-shaped groove 3 is provided on the first low-beam lens 1. Utilizing the light-blocking or refractive properties of its edges and inclined surfaces, the groove "cuts" and guides the light, helping to form a clear cutoff line between light and dark. Moreover, the tilt angle and depth of the V-shaped groove 3 are precisely designed to guide the scattered light emitted by the light source to a specific area, reducing the phenomenon of an overly bright center and an overly dark edge of the light spot, making the light distribution within the illumination range more uniform, and improving the clarity of nighttime driving visibility.

[0044] In this application, the V-groove 3 is set on the first low beam lens 1 instead of a separate lens, which can reduce costs and overall weight.

[0045] In some embodiments, such as Figure 1 As shown, the low beam module 10 also includes a condenser 4, which is disposed on the low beam side of the first low beam lens 1.

[0046] The concentrator 4 uses its curved surface (such as a parabola, sphere, or aspherical surface) or special optical texture design to reflect, refract, or converge the scattered light emitted by the first light source 5, so that the originally dispersed light is concentrated in a specific direction (first curved surface 11), which greatly increases the light intensity per unit area and allows the limited light source power to achieve a greater lighting effect.

[0047] For example, when the first light source 5 is an LED chip, its light emission angle is usually large (60°-120°). The concentrator 4 can "recover" stray light from the side and back and guide it forward, so that the light utilization rate can be increased from 30%-50% in the natural state to more than 70%.

[0048] In addition, different headlight modules (low beam, high beam, fog lights) are subject to strict regulations (e.g., low beams must have a clear cutoff line to avoid glare for oncoming vehicles; high beams must have a long illumination distance and a wide range). The concentrator 4 precisely controls the beam's angle, range, and brightness distribution by designing curved surfaces, light-shielding structures, or internal optical textures to ensure it meets international or regional headlight standards.

[0049] Specifically, such as Figure 1 As shown, the low beam module 10 has multiple condensers 4, which are arranged side by side along the extension direction of the second focal line 22. Each condenser 4 corresponds to one of the multiple first curved surfaces 11. In this way, the light density on each first curved surface 11 is roughly the same, the light processing efficiency is high, and the obtained low beam is brighter.

[0050] Optionally, such as Figure 1 As shown, the condenser 4 and the first low beam lens 1 are integrally formed. That is to say, by making the condenser 4 and the first low beam lens 1 into an integral lens, the number of lens processing is reduced, the weight is reduced, and the condenser 4 focuses the light onto the first curved surface 11, resulting in a low light leakage rate.

[0051] The following reference Figures 1-3 Description of a vehicle light 100 according to an embodiment of the present utility model.

[0052] According to an embodiment of the utility model, the vehicle light 100, with reference to... Figure 3 This includes the low beam module 10 according to the above embodiment. The low beam module 10 splits a conventional single-focus lens into a first low beam lens 1 having a first curved surface 11 and a second low beam lens 2 having a second curved surface 21. The processing of the two curved surfaces does not affect each other, and the resulting focal length is smaller than that of a conventional lens. By utilizing the principle that the smaller the focal length, the larger the image, the wider the obtained low beam width is achieved.

[0053] Within a limited space, it is easy to achieve a wider low beam width and stronger low beam brightness. In some embodiments, such as Figure 1 As shown, the vehicle headlight 100 also includes a high beam module 20, which is disposed on one side of the low beam module 10. For example... Figure 1 The mid-to-low beam module 10 and the high beam module 20 are arranged along the Y direction.

[0054] Of course, the headlight 100 may also include an adaptive high beam module, which is located on one side of the low beam module 10. Alternatively, the headlight 100 may include both a high beam module 20 and an adaptive high beam module, both of which can be arranged along the Y direction with the low beam module 10.

[0055] This low beam module 10 configuration allows the light emitted from the light source to form a low beam function after passing through the first low beam lens 1 and the second low beam lens 2. It solves the problem that the length of the low beam system is less than the length of the adaptive high beam module or the high beam module 20, avoiding spatial misalignment between the low beam function and the adaptive high beam module or the high beam module 20, and reducing the complexity of the module structure. This reduces costs, improves heat dissipation, increases the luminous flux emitted by the first light source 5, and contributes to improving the overall lighting effect of the module.

[0056] The low beam module 10 of this application separates the left and right focal line lenses and the upper and lower focal line lenses to form a new lens group. While improving the width of the low beam, it can also improve the brightness of the low beam. This allows the driver to illuminate a farther distance and a wider illumination range when using the low beam function, providing the driver with a good road lighting effect.

[0057] The vehicle according to the utility model embodiment includes the vehicle light 100 according to the above embodiment.

[0058] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A low beam module, characterized in that, include: The first low beam lens has a light-emitting surface that is a first curved surface that convexes in the light-emitting direction and has a first focal line. The second low beam lens has a light-receiving surface that is a second curved surface that protrudes toward the first curved surface, and the second curved surface has a second focal line. The first focal line and the second focal line are perpendicular.

2. The low beam module according to claim 1, characterized in that, The focal length of the first surface is less than the focal length of the second surface.

3. The low beam module according to claim 1, characterized in that, The light-emitting surface of the first low-light lens includes at least two first curved surfaces, which are arranged side by side along the extension direction of the second focal line.

4. The low beam module according to claim 1, characterized in that, The first low-light lens is also provided with a V-shaped groove, which is located on the low-light side of the first curved surface and is arranged along the extension direction of the second focal line.

5. The low beam module according to any one of claims 1-4, characterized in that, Also includes: A condenser is disposed on the near-light side of the first near-light lens.

6. The low beam module according to claim 5, characterized in that, There are multiple condensers, which are arranged side by side along the extension direction of the second focal line, and the multiple condensers are arranged in a one-to-one correspondence with the multiple first curved surfaces.

7. The low beam module according to claim 5, characterized in that, The condenser is integrally formed with the first low-beam lens.

8. A vehicle light, characterized in that, include: The low beam module as described in any one of claims 1-7.

9. The vehicle light according to claim 8, characterized in that, The vehicle headlights also include a high beam module and / or an adaptive high beam module, wherein the adaptive high beam module and / or the high beam module are disposed on one side of the low beam module.

10. A vehicle, characterized in that, Includes the vehicle lights as described in claim 8 or 9.

Images