Low beam module and vehicle lamp
By designing the optical combination and cut-off line connection or superposition of multiple module units in the low-beam module, the problem of uneven energy distribution of traditional low-beam modules is solved, lighting performance is improved and cost is reduced.
Patent Information
- Application Number
- CN202420013210.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-03
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-03
AI Technical Summary
The energy distribution of traditional low-beam modules near the light and dark cutoff line is uneven, which is difficult to meet the performance requirements of C-NCAP and C-IASI. At the same time, the projection lens is thicker and has a higher cost.
Design a low-beam module, including at least two module units, each module unit includes a light source, a primary optical element and a projection lens. The primary optical element has a non-linear cut-off structure, and the light is passed through the primary optical element and is subjected to the projection lens. Independent light types, multiple light types are formed to connect or superimpose cut-off lines to improve the degree of freedom of energy distribution and lighting performance, and to reduce the thickness of the projection lens.
Through the combination and connection or superposition of light types, the energy distribution near the cutoff line is increased, the lighting performance is improved, and the thickness of the projection lens is reduced, and the cost is reduced.
Smart Images
Figure CN222278304U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automobile lighting technology, and in particular to a low beam module and a vehicle lamp. Background Art
[0002] With the gradual improvement of the requirements for the lighting performance of automobile low beams in the China New Car Assessment Program (C-NCAP) and the China Insurance Automobile Safety Index (C-IASI), the energy of a single light pattern formed by a traditional low beam module near the light-dark cutoff line can no longer meet the performance requirements of C-NCAP and C-IASI.
[0003] In the existing technical solutions, the low beam light pattern is mostly formed by a single light pattern, and the entire light pattern shares a cut-off line formed by a baffle, and the projection lens does not have partitions. In the areas of the inner and outer sides of an overall light pattern that are far from the center point, the energy near the cut-off line will be greatly attenuated, and the freedom of energy distribution adjustment is poor. At the same time, since the projection lens does not have partitions, the thickness of the projection lens will also be relatively large, and the cost will be relatively high. Utility Model Content
[0004] The purpose of the embodiments of the present application is to provide a low beam module and a vehicle lamp, which can distribute more energy near the cut-off line through a combination of multiple light patterns, provide better lighting performance, and reduce costs.
[0005] In one aspect of an embodiment of the present application, a low beam module is provided, comprising at least two module units, each of which comprises a light source, a primary optical element and a projection lens arranged in sequence, wherein the primary optical element has a cut-off line structure;
[0006] Among at least two of the module units, the cutoff line structure of the primary optical element of at least one of the module units is a first cutoff line structure, and in a first direction perpendicular to the light emitting direction, the first cutoff line structure is a non-straight line;
[0007] The light emitted by the light source passes through the primary optical element and is projected by the projection lens to form a light pattern with a cut-off line, and the cut-off lines of the light patterns formed by at least two of the module units are connected or superimposed.
[0008] Optionally, in each of the module units, the projection lens corresponds to at least one of the primary optical elements;
[0009] When there are multiple primary optical elements in one module unit, the cut-off line structures of the multiple primary optical elements are connected in sequence, and at least one primary optical element has the first cut-off line structure.
[0010] Optionally, when there are multiple primary optical elements in one module unit, the multiple primary optical elements are interconnected or integrally formed.
[0011] Optionally, the primary optical elements of at least two of the module units are arranged side by side in a first direction perpendicular to the light emitting direction, or are arranged in a staggered manner along the light emitting direction.
[0012] Optionally, the projection lenses of at least two of the module units are connected in sequence or integrally formed.
[0013] Optionally, the primary optical element is a reflector, and the cut-off line structure is located at an edge of the reflector close to the light source.
[0014] Optionally, at least one transfer lens is further arranged between the reflector and the projection lens of at least one of the at least two module units, so that the light passing through the reflector passes through at least one transfer lens in sequence and then enters the projection lens.
[0015] Optionally, the primary optical element is a condenser, and the cut-off line structure is located at an edge of the condenser close to the projection lens.
[0016] Optionally, the focus of the projection lens is located at a corresponding cut-off line structure of the concentrator.
[0017] Optionally, the concentrators of at least two of the module units are long concentrators and / or short concentrators.
[0018] Optionally, at least one adjustment lens is further arranged between the short condenser and the corresponding projection lens, so that the light passing through the short condenser passes through at least one adjustment lens in sequence and then enters the projection lens.
[0019] Another aspect of the embodiments of the present application provides a vehicle lamp, including: the above-mentioned low beam module.
[0020] The low beam module and vehicle lamp provided in the embodiment of the present application include at least two module units. For each module unit, it includes a light source, a primary optical element and a projection lens arranged in sequence. The light emitted by the light source passes through the primary optical element and then projects a light pattern by the projection lens. Each module unit emits a light pattern correspondingly. The low beam light pattern formed in the present application is composed of at least two light patterns. The primary optical element has a cutoff line structure. After the light is cut off by the cutoff line structure, the light is formed by the projection lens to form a light pattern with a cutoff line. Each module unit projects an independent light pattern correspondingly. Each light pattern has an independent cutoff line. The cutoff lines of the light patterns formed by at least two module units are connected or superimposed, so that more energy can be distributed near the cutoff line after connection or superposition, and the degree of freedom of energy distribution adjustment is also improved, so that better lighting performance can be provided. At the same time, since each light pattern has an independent module unit, the size of the projection lens in the module unit is smaller than the lens size in the existing system, so the thickness of the projection lens can be reduced, improving efficiency while reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 This is one of the schematic diagrams of the low beam module structure provided in this embodiment;
[0023] Figure 2 This is one of the schematic diagrams of the cutoff line structure of the low beam module provided in this embodiment;
[0024] Figure 3 This is the second schematic diagram of the cut-off line structure of the low beam module provided in this embodiment;
[0025] Figure 4 This is the third schematic diagram of the cutoff line structure of the low beam module provided in this embodiment;
[0026] Figure 5 This is the second schematic diagram of the low beam module structure provided in this embodiment;
[0027] Figure 6 yes Figure 5 Schematic diagram of the cut-off line structure;
[0028] Figure 7 This is the third schematic diagram of the low beam module structure provided in this embodiment;
[0029] Figure 8 yes Figure 7 Schematic diagram of the cut-off line structure;
[0030] Fig. 9 This is the fourth schematic diagram of the low beam module structure provided in this embodiment;
[0031] Fig.10 yes Fig. 9 Corresponding light type;
[0032] Fig.11 is a light pattern set of the low beam module provided in this embodiment;
[0033] Fig.12 This is the fifth schematic diagram of the low beam module structure provided in this embodiment;
[0034] Fig.13 This is the sixth schematic diagram of the low beam module structure provided in this embodiment;
[0035] Fig.14 This is the seventh schematic diagram of the low beam module structure provided in this embodiment;
[0036] Fig.15 yes Fig.14 Another visual structural diagram;
[0037] Fig.16 This is the eighth schematic diagram of the low beam module structure provided in this embodiment.
[0038] Icons: 11, 11a, 11b-first reflector; 12, 12a, 12b, 12c-second reflector; 13-third reflector; 13a-first cut-off line structure; 13b-conventional cut-off line structure; 21-first projection lens; 22-second projection lens; 23-third projection lens; 31-first concentrator; 32-second concentrator; S-light emitting direction; F1-first direction. DETAILED DESCRIPTION
[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.
[0040] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0041] It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0042] An embodiment of the present application provides a low beam module, comprising: at least two module units, each module unit comprises a light source, a primary optical element and a projection lens arranged in sequence, the primary optical element is provided with a non-linear cutoff line structure in a first direction F1 perpendicular to the light emitting direction S, the light emitted by the light source passes through the primary optical element and is projected by the projection lens to form a light pattern with a cutoff line, and the cutoff lines of the light patterns formed by at least two module units are connected or superimposed.
[0043] In a single module unit, the light source emits light, which passes through the primary optical element and the projection lens in sequence. The primary optical element is used to transmit the light emitted by the light source to the projection lens so that the projection lens can project it. At the same time, the primary optical element has a cutoff line structure. After the light is cut off by the cutoff line structure, it will pass through the projection lens to form a light pattern with a cutoff line.
[0044] The low beam module includes at least two of the above-mentioned module units, each module unit projects an independent light pattern, each light pattern has an independent cut-off line, and the cut-off lines of the light patterns formed by at least two module units are connected or overlapped to form an overall cut-off line area. Compared with the cut-off line of a single light pattern, after the cut-off lines of at least two light patterns are connected or overlapped, more energy can be concentrated in the cut-off line area, thereby solving the problem of relatively large attenuation of energy near the cut-off line of a single light pattern in the prior art.
[0045] Therefore, the low beam module provided in the embodiment of the present application includes at least two module units. For each module unit, it includes a light source, a primary optical element and a projection lens arranged in sequence. The light emitted by the light source passes through the primary optical element and then projects a light pattern by the projection lens. Each module unit corresponds to a light pattern. The low beam light pattern formed by the present application is composed of at least two light patterns. Since the primary optical element has a cutoff line structure, the light is intercepted by the cutoff line structure and then forms a light pattern with a cutoff line by the projection lens. Each module unit projects an independent light pattern correspondingly, and each light pattern has an independent cutoff line. The cutoff lines of the light patterns formed by at least two module units are connected or superimposed, so that more energy can be distributed near the cutoff line after connection or superposition, and the degree of freedom of energy distribution adjustment is also improved, so that better lighting performance can be provided. At the same time, since each light pattern has an independent module unit, the size of the projection lens in the module unit is smaller than the lens size in the existing system, so the thickness of the projection lens can be reduced, improving efficiency while reducing costs.
[0046] The light beam passes through the primary optical element and is projected by the projection lens to form a light pattern with a cutoff line, which is based on the cutoff line structure on the primary optical element. In at least two module units, the cutoff line structure of the primary optical element of at least one module unit is a first cutoff line structure 13a, and in a first direction F1 perpendicular to the light emitting direction S, the first cutoff line structure 13a is a non-linear line.
[0047] In the first direction F1, the first cut-off line structure 13a is an uneven cut-off line structure. In other words, the first cut-off line structure 13a is a non-straight line. The non-straight line includes but is not limited to a broken line, a curve, a combination of the two, or other lines as long as they are not straight lines.
[0048] As long as the primary optical element of one module unit has a non-linear first cut-off line structure 13a, the primary optical elements of other module units may have a non-linear first cut-off line structure 13a or a conventional cut-off line structure 13b.
[0049] For example, in one embodiment, Figure 1 As shown, the primary optical element is a reflector, and the low beam module includes a first module unit and a second module unit. The first module unit is provided with a first light source (not shown), a first reflector 11 and a first projection lens 21; the second module unit is provided with a second light source (not shown), a second reflector 12 and a second projection lens 22. The first module unit forms a first light pattern, and the second module unit forms a second light pattern.
[0050] The first reflector 11 and / or the second reflector 12 is provided with an uneven first cut-off line structure 13 a , and the first light pattern and the second light pattern are superimposed to form a low-beam light pattern.
[0051] It should be understood that the superposition of light types here refers to that two different light types at least have an intersection, wherein the cutoff line of the first light type is connected to or superimposed with the cutoff line of the second light type.
[0052] Figure 2 , it is shown that the first reflector 11 is provided with an uneven first cut-off line structure 13a, while the conventional cut-off line structure 13b provided on the second reflector 12 is a straight line; Figure 3 , it is shown that the second reflector 12 is provided with an uneven first cut-off line structure 13a, while the conventional cut-off line structure 13b provided on the first reflector 11 is a straight line; Figure 4 FIG. 4 shows that an uneven first cutoff line structure 13 a is provided on both the first reflector 11 and the second reflector 12 .
[0053] On this basis, the projection lenses of at least two module units are connected in sequence or integrally formed.
[0054] Still taking the primary optical element as a reflector as an example, Figure 1 The first projection lens 21 and the second projection lens 22 are connected in sequence or formed in one piece. The light entrance surface and the light exit surface of the two can be different according to the needs, so that the projection lens has partitions, can have different focal lengths and different degrees of light dispersion. And the thickness of the projection lens can be reduced, the efficiency is improved and the cost is reduced.
[0055] In addition, in order to improve the light effect and the degree of freedom of light distribution, at least one transfer lens (not shown in the figure) is further arranged between the reflector and the projection lens of at least one module unit among at least two module units.
[0056] Each module unit includes a projection lens, through which the light pattern is projected; a transfer lens is added between the projection lens and the reflector of the module unit so that the light passes through the reflector and then passes through the transfer lens in turn to enter the projection lens, thereby improving the lighting effect. At the same time, the setting of the transfer lens also improves the freedom of light distribution.
[0057] In the front-to-back direction of the low beam module (ie, in the light emitting direction S), there may be one or more transfer lenses, and the multiple transfer lenses are arranged in sequence along the light emitting direction S.
[0058] Furthermore, the primary optical elements of at least two module units may be arranged in a first direction F1 perpendicular to the light emitting direction S as follows: Figure 1 side by side as shown, or as Figure 7 As shown, they are staggered along the light emitting direction S.
[0059] The first reflector 11 and the second reflector 12 can be provided separately, and their relative positions can be adjusted as required when they are installed on the same installation surface; for example, Figure 1 As shown, they are arranged in sequence along the left and right direction (first direction F1) of the low beam module, or as shown Figure 7 The components are arranged in a staggered manner along the front-to-back direction (light emitting direction S) of the low beam module to facilitate the arrangement of components.
[0060] Figure 7 In the figure, the second reflectors 12a, 12b and 12c corresponding to the second projection lens 22 are obviously located in front of the first reflectors 11a and 11b corresponding to the first projection lens 21 and the third reflector 13 corresponding to the third projection lens 23.
[0061] In addition, in each module unit, the projection lens corresponds to at least one primary optical element; when a module unit has multiple primary optical elements, the cutoff line structures of the multiple primary optical elements are connected in sequence, and at least one primary optical element has a first cutoff line structure 13a. The multiple primary optical elements can also be connected to each other or formed as one piece.
[0062] For embodiments where the primary optical element is a mirror, Figure 1 , Figure 5 , Figure 7 As shown, the cut-off line structure is located at the edge of the reflector close to the light source, that is, the lower edge of the reflector shown in the figure.
[0063] For a module unit, the projection lens corresponds to at least one reflector; in a module unit, there can also be multiple reflectors, such as Figure 5 and Figure 7 As shown, multiple reflectors correspond to one projection lens.
[0064] When a module unit has multiple reflectors, the multiple reflectors are interconnected or integrally formed.
[0065] Furthermore, when a module unit has multiple reflectors, the cutoff line structures of the multiple reflectors are connected in sequence.
[0066] In a module unit, among the multiple reflectors corresponding to its projection lens, at least one reflector is provided with an uneven first cutoff line structure 13a, and is connected with the cutoff line structures of other reflectors in the same module unit, so that the cutoff lines in the sub-light patterns projected by the reflectors in the same module unit are also connected or superimposed, thereby ensuring the integrity of the shape of the light pattern corresponding to each module unit and the continuity of the cutoff line.
[0067] As shown in FIG. 5 , one projection lens corresponds to two or three reflectors, and the two or three reflectors are connected together or integrally formed.
[0068] Figure 5In the figure, the first projection lens 21 corresponds to two first reflectors 11, namely the first reflector 11a and the first reflector 11b; the second projection lens 22 corresponds to three second reflectors 12, namely the second reflector 12a, the second reflector 12b and the second reflector 12c.
[0069] Figure 7 On this basis, a third reflector 13 is further provided, and the third reflector 13 corresponds to the third projection lens 23 .
[0070] As mentioned above, among the multiple reflectors corresponding to each projection lens, at least one reflector has a first cutoff line structure 13a and is connected to the cutoff line structures of other reflectors corresponding to the same projection lens, so as to ensure the shape integrity and cutoff line continuity of the light pattern projected by each module unit.
[0071] For example, Figure 5 , Figure 6 In the embodiment, the first reflector 11a and the first reflector 11b are both provided with a first cut-off line structure 13a, and the first cut-off line structure 13a of the first reflector 11a is connected with the first cut-off line structure 13a of the first reflector 11b; the second reflector 12a and the second reflector 12c are both provided with a first cut-off line structure 13a, and the second reflector 12b is provided with a conventional cut-off line structure 13b, and the first cut-off line structure 13a of the second reflector 12a, the conventional cut-off line structure 13b of the second reflector 12b, and the first cut-off line structure 13a of the second reflector 12c are connected in sequence.
[0072] Taking the primary optical element as a reflector as an example, in another embodiment, Figure 7 As shown, the low beam module includes three module units, in each module unit, a projection lens may correspond to a reflector or multiple reflectors, and the multiple reflectors corresponding to the same projection lens are connected to each other or formed in one piece. At least one reflector has an uneven cutoff line structure, that is, it has a first cutoff line structure 13a; the light pattern corresponding to each module unit is superimposed to form a low beam light pattern, and the cutoff lines corresponding to multiple reflectors in the same module unit are connected to or superimposed on each other, but between multiple module units, the cutoff lines corresponding to adjacent different reflectors are not necessarily connected to or superimposed on each other.
[0073] Figure 7 , Figure 8In the embodiment, each reflector in the three module units is provided with a first cutoff line structure 13a, and the first cutoff line structures 13a in the same module unit are connected to ensure the shape integrity of the light type projected by each module unit and the continuity of the cutoff line. However, for different module units, the corresponding cutoff lines of the reflectors that are adjacent to each other in the module units are not necessarily connected or superimposed in sequence. For example, the cutoff line corresponding to the first reflector 11b is connected or superimposed with the cutoff line corresponding to the second reflector 12b, or the cutoff line corresponding to the first reflector 11b is connected or superimposed with the cutoff lines corresponding to the second reflector 12b, the second reflector 12c and the third reflector 13.
[0074] In addition, according to the different focal lengths of the projection lens, the corresponding reflector setting position can be adjusted on the mounting surface. The larger the focal length of the projection lens, the stronger the central energy of the corresponding light pattern; the smaller the focal length of the projection lens, the greater the width and luminous flux of the corresponding light pattern.
[0075] When the longitudinal opening of the entire projection lens (perpendicular to the first direction F1) is small, different module units are arranged in a staggered manner in the front-to-back direction of the low beam module (light emitting direction S), such as Figure 7 As shown, it can be ensured that the light emitted from each module unit is collected as much as possible by the projection lens.
[0076] Fig.10 Here are some examples of light patterns. The low beam pattern is composed of three light patterns. Each light pattern corresponds to an independent module unit and an independent cutoff line. Fig. 9 Each module unit contains two, three, and one reflector respectively, and the overall thickness of the projection lens is smaller than that of traditional designs.
[0077] As an example Fig. 9 , Fig.10 As shown, in the three groups of module units, the edges of the reflectors forming the cutoff lines between different projection lenses close to the light source are uneven (first cutoff line structure 13a), the purpose of which is to independently design the height and shape of the cutoff line for different projection lenses, thereby improving the flexibility of the design. The edges of the reflectors forming the cutoff lines in different module units facing the light source (cutoff line structures) have different shapes, some of which include a cutoff line inflection point (such as LB1 and LB3), and some do not include a cutoff line inflection point (such as LB2), so that an overall light pattern (such as LB) can be formed.
[0078] Fig.11 Several examples of low beam patterns are given. In the low beam pattern, the pattern of each module unit includes but is not limited to the example Fig.11 The light type shown in ; the light type corresponding to each module unit includes a single light type or a combination of multiple light types corresponding to these modules.
[0079] In addition to being the above-mentioned reflector, the primary optical element may also be a concentrator. The following description will be given by taking the primary optical element as a concentrator as an example.
[0080] like Fig.12 As shown, when the primary optical element is a concentrator, the cut-off line structure is located at the bottom of the concentrator near the projection lens. In a module unit, each projection lens corresponds to at least one concentrator, and at least one concentrator has an uneven first cut-off line structure 13a, and adjacent cut-off lines of corresponding light patterns are connected or overlapped with each other, whether within the module unit or between the module units.
[0081] The concentrator may be a long concentrator, and the length of the long concentrator along the light emitting direction S is longer. Fig.12 , an example is shown in which two groups of module units each have a long concentrator, the first concentrator 31 and / or the second concentrator 32 has an uneven first cut-off line structure 13a, and the first cut-off line structure 13a is located at the lower edge of the long concentrator close to the projection lens.
[0082] Fig.12 The first concentrator 31 has a first cutoff line structure 13a, and the second concentrator 32 has a conventional cutoff line structure 13b; the first concentrator 31 may have a conventional cutoff line structure 13b, and the second concentrator 32 may have a first cutoff line structure 13a; or both the first concentrator 31 and the second concentrator 32 may have an uneven first cutoff line structure 13a.
[0083] Fig.12 The arrangement of two long concentrators ensures that when the light source is arranged on the same circuit board, there is no staggered arrangement between the long concentrators along the front-to-back direction of the low beam module (light emitting direction S). Therefore, the length of the long concentrator can be adjusted according to the different focal lengths of the projection lens so that the focus of the projection lens is located at the cut-off line structure of the concentrator.
[0084] The concentrator can also be a short concentrator, such as Fig.13 As shown, the length of the short concentrator along the light emitting direction S is significantly shorter than Fig.12 At least one of the short concentrators has an uneven first cut-off line structure 13a, and the cut-off line structure is located at the lower edge of the short concentrator close to the projection lens.
[0085] When the light sources are arranged on the same circuit board, there is no staggered arrangement of the short concentrators along the front-to-back direction of the low beam module. Therefore, according to the different focal lengths of the projection lens, at least one adjustment lens is arranged between the projection lens and the corresponding short concentrator to adjust the focus of the lens group so that the focus is located at the cut-off line structure of the short concentrator.
[0086] It is also possible that a long concentrator and a short concentrator are used in combination. Similarly, at least one concentrator has a first uneven cut-off line structure 13a, which is located at the lower edge of the concentrator close to the projection lens.
[0087] Fig.14 , Fig.15 , an example is shown in which the first projection lens 21 corresponds to a short concentrator, the second projection lens 22 corresponds to a long concentrator, and the first cut-off line structure 13a is located at the long concentrator; Fig.16 An example is shown in which the first projection lens 21 corresponds to a long condenser, the second projection lens 22 corresponds to a short condenser, and the first cut-off line structure 13a is located at the short condenser.
[0088] On the other hand, the embodiment of the present application also discloses a vehicle lamp, comprising any of the above low beam modules. The vehicle lamp comprises the same structure and beneficial effects as the low beam modules in the above embodiments. The structure and beneficial effects of the low beam modules have been described in detail in the above embodiments, and will not be repeated here.
[0089] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A low beam module, characterized in that: include: At least two module units, each of which comprises a light source, a primary optical element and a projection lens which are arranged in sequence, and the primary optical element has a cut-off line structure; Among at least two of the module units, the cutoff line structure of the primary optical element of at least one of the module units is a first cutoff line structure, and in a first direction perpendicular to the light emitting direction, the first cutoff line structure is a non-straight line; The light emitted by the light source passes through the primary optical element and is projected by the projection lens to form a light pattern with a cut-off line, and the cut-off lines of the light patterns formed by at least two of the module units are connected or superimposed.
2. The low beam module according to claim 1, characterized in that: In each of the module units, the projection lens corresponds to at least one of the primary optical elements; When there are multiple primary optical elements in one module unit, the cut-off line structures of the multiple primary optical elements are connected in sequence, and at least one primary optical element has the first cut-off line structure.
3. The low beam module according to claim 2, characterized in that: When there are multiple primary optical elements in one module unit, the multiple primary optical elements are interconnected or integrally formed.
4. The low beam module according to claim 1, characterized in that: The primary optical elements of at least two of the module units are arranged side by side in a first direction perpendicular to the light emitting direction, or are arranged in a staggered manner along the light emitting direction.
5. The low beam module according to claim 1, characterized in that: The projection lenses of at least two of the module units are connected in sequence or integrally formed.
6. The low beam module according to any one of claims 1 to 5, characterized in that: The primary optical element is a reflector, and the cut-off line structure is located at an edge of the reflector close to the light source.
7. The low beam module according to claim 6, characterized in that: At least one of the at least two module units has at least one transfer lens disposed between the reflector and the projection lens, so that the light passing through the reflector passes through the at least one transfer lens in sequence and then enters the projection lens.
8. The low beam module according to any one of claims 1 to 5, characterized in that: The primary optical element is a condenser, and the cut-off line structure is located at an edge of the condenser close to the projection lens.
9. The low beam module according to claim 8, characterized in that: The focal point of the projection lens is located at the corresponding cut-off line structure of the concentrator.
10. The low beam module according to claim 8, characterized in that: The concentrators of at least two of the module units are long concentrators and / or short concentrators.
11. The low beam module according to claim 10, characterized in that: At least one adjusting lens is further arranged between the short condenser and the corresponding projection lens, so that the light passing through the short condenser passes through at least one adjusting lens in sequence and then enters the projection lens.
12. A vehicle lamp, characterized in that: Comprising the low beam module according to any one of claims 1 to 11.