Lens, vehicle lamp optical system and vehicle lamp assembly

Abstract

The utility model discloses a lens, an automobile lamp optical system and an automobile lamp assembly, and relates to the technical field of automobile lighting. The lens comprises a lens body, the surface of the lens body is sequentially divided into a first area, a second area and a third area in the longitudinal direction, the second area is located in the middle of the lens body, and the first area, the second area and the third area are provided with a first grid pattern, a second grid pattern and a third grid pattern respectively. The arch height of the second grid pattern is larger than that of the first grid pattern and that of the third grid pattern. The lens, the automobile lamp optical system and the automobile lamp assembly can solve the problem that the existing high and low beam automobile lamp optical system cannot meet the requirements of reducing the low beam light-dark cut-off line gradient and not influencing the high beam light type maximum illumination value and the light type energy distribution and shape at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lighting, in particular to a lens, an automobile light optical system and an automobile light assembly. Background Art

[0002] Compared with the single low beam lens system and the single high beam lens system, the lens system that integrates low beam and high beam functions is now more and more widely used due to its compact structure. The high and low beam lens system mainly includes a heat sink, a circuit board, a light source, optical elements and lenses corresponding to the high and low beams, etc. After the Matrix high beam system was launched, it is usually used in conjunction with the low beam lens system to achieve the best effect. Similar to the traditional high and low beam headlight optical system, the Matrix high beam system is also integrated with the low beam system and uses the same lens, so that its appearance is consistent with the traditional high and low beam headlight optical system, except that the high beam system is replaced by the Matrix high beam system.

[0003] In the existing Matrix high and low beam headlight optical system, the Matrix high beam system is usually divided into multiple light sources and a corresponding focusing system. The position of its light-emitting surface is located at the focus of the lens. At this time, the high beam brightness and the partition width can meet specific requirements; at the same time, the low beam cutoff line structure is also located near the focus of the lens. The lens images the low beam cutoff line structure, and a clear low beam light and dark cutoff line can be formed. The light-emitting surface of the Matrix high beam system and the low beam cutoff line structure (the light-emitting surface of the low beam system) are basically on the same plane in the front-to-back direction (that is, connected together). In this way, when the high beam light pattern formed by the Matrix high beam system and the low beam light pattern formed by the low beam system are combined, it will cause the low beam light and dark cutoff line of the Matrix high and low beam headlight optical system to have a clear blue dividing line at the junction with the lower boundary of the high beam light pattern, affecting the driver's driving experience.

[0004] In addition, in order to meet the gradient requirements for the low beam and high beam cut-off lines in the prior art, the lens surface is usually processed, such as adding patterns, to reduce the corresponding gradient value so that the low beam and high beam cut-off lines are not so sharp. However, this approach will affect the maximum illumination value (Emax value) of the high beam light pattern of the high beam system as well as the energy distribution and shape of the light pattern, resulting in the inability to take into account both the low beam and high beam requirements. Utility Model Content

[0005] The utility model aims to provide a lens, a headlight optical system and a headlight assembly, which can solve the problem that the existing high and low beam headlight optical system cannot simultaneously reduce the gradient of the low beam cut-off line and not affect the maximum illumination value of the high beam light type and the energy distribution and shape of the light type.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect of the embodiment of the utility model, a lens is provided, comprising a lens body, wherein the surface of the lens body is divided into a first area, a second area and a third area in sequence along the longitudinal direction, wherein the second area is located in the middle of the lens body, and the first area, the second area and the third area are respectively provided with a first grid pattern, a second grid pattern and a third grid pattern, wherein the arch height of the second grid pattern is greater than the arch height of the first grid pattern and the third grid pattern. The lens can solve the problem that the existing high and low beam headlight optical system cannot simultaneously reduce the gradient of the low beam cutoff line and not affect the maximum illumination value of the high beam light type and the energy distribution and shape of the light type.

[0008] As an implementable manner, the arch height of the second grid pattern has a value range of 0 to 0.005 mm.

[0009] As an practicable manner, the first grid pattern and the third grid pattern have equal arch heights.

[0010] As an implementable manner, the arch heights of the first grid pattern and the third grid pattern are both 0.

[0011] The second aspect of the embodiment of the utility model provides a headlight optical system, comprising a low beam light source, a low beam focusing element, a high beam light source, a high beam focusing element and the above-mentioned lens, wherein the low beam light source and the low beam focusing element constitute a low beam optical assembly, and the high beam light source and the high beam focusing element constitute a high beam optical assembly, a cutoff line structure for forming a low beam light-dark cutoff line is provided at the lower edge of the light-emitting surface of the low beam optical assembly, the focus of the lens is located at the cutoff line structure, the outgoing light of the low beam optical assembly enters the lens and is refracted by the lens and then exits to form a low beam light pattern on a target plane, and the outgoing light of the high beam optical assembly enters the lens and is refracted by the lens and then exits to form a high beam light pattern on the target plane. The lens can solve the problem that the existing high and low beam headlight optical system cannot simultaneously meet the requirements of reducing the low beam light-dark cutoff line gradient and not affecting the maximum illumination value and light pattern energy distribution and shape of the high beam light pattern.

[0012] As an implementable method, the distance between the lower edge of the light emitting surface of the low beam optical component and the light incident surface of the lens is a, the distance between the upper edge of the light emitting surface of the high beam optical component and the light incident surface of the lens is b, and the following relationship is satisfied: 0.2mm≤ba≤1mm.

[0013] As an implementable manner, the outgoing light of the high-beam optical component enters the central area of ​​the lens and forms a high-beam light pattern on the target plane after being refracted by the lens.

[0014] As an implementable manner, the light emitting surface of the high-beam optical component is a convex curved surface convex toward the light emitting direction, and a longitudinal section line of the light emitting surface of the high-beam optical component is a curve.

[0015] As an implementable manner, the light emitting surface of the high beam optical assembly is longitudinally divided into an upper region Q1 and a lower region Q2, and the curvature of the longitudinal section line of the upper region Q1 is greater than the curvature of the longitudinal section line of the lower region Q2.

[0016] The third aspect of the embodiment of the utility model provides a headlight assembly, including the headlight optical system described above. The lens can solve the problem that the existing high and low beam headlight optical system cannot simultaneously reduce the gradient of the low beam cutoff line and not affect the maximum illumination value of the high beam light type and the energy distribution and shape of the light type.

[0017] The beneficial effects of the embodiments of the utility model include:

[0018] The lens includes a lens body, the surface of the lens body is divided into a first area, a second area and a third area in sequence along the longitudinal direction, the second area is located in the middle of the lens body, the first area, the second area and the third area are respectively provided with a first grid pattern, a second grid pattern and a third grid pattern, and the arch height of the second grid pattern is greater than the arch height of the first grid pattern and the third grid pattern. The lens provided by the present application can reduce the gradient of the near light cut-off line and minimize the impact on the high beam light type by setting different areas (i.e., the first area, the second area and the third area) on the surface of the lens body and designing grid patterns with different arch heights for each area (i.e., the first grid pattern, the second grid pattern and the third grid pattern), thereby taking into account the reduction of the gradient of the near light cut-off line and the guarantee that the maximum illumination value of the high beam light type and the energy distribution and shape of the light type are not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 One of the structural schematic diagrams of the lens provided in the embodiment of the utility model;

[0021] Figure 2 The second structural schematic diagram of the lens provided in the embodiment of the utility model;

[0022] Figure 3 The third structural diagram of the lens provided in the embodiment of the utility model;

[0023] Figure 4 A fourth structural schematic diagram of a lens provided in an embodiment of the utility model;

[0024] Figure 5 One of the structural schematic diagrams of the vehicle light optical system provided by the embodiment of the utility model;

[0025] Figure 6 The second structural schematic diagram of the vehicle light optical system provided by the embodiment of the utility model;

[0026] Figure 7 A schematic diagram of the lighting light pattern of the headlight optical system provided in an embodiment of the utility model in high beam working condition.

[0027] Icons: 100-headlight optical system; 10-low beam optical assembly; 11-light emitting surface of low beam optical assembly; 20-high beam optical assembly; 21-light emitting surface of high beam optical assembly; 22-high beam optical axis; Q1-upper area; Q2-lower area; 30-lens; 31-lens body; R1-first area; R2-second area; R3-third area; 40-cut-off line structure. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model 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 the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. It should be further explained that if the light converges to the focus, it does not mean that it converges to the focus in the strict sense, but it can also be near the focus (<2mm). Similarly, the focus is set at the cutoff line structure, which includes both the focus being set on the cutoff line structure and the focus being set near the cutoff line structure.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Please refer to Figures 1 to 7 The embodiment of the present application provides a vehicle light optical system 100, including a low beam light source, a low beam focusing element, a high beam light source, a high beam focusing element and a lens 30. The low beam light source and the low beam focusing element constitute a low beam optical component 10, and the high beam light source and the high beam focusing element constitute a high beam optical component 20. A cutoff line structure 40 for forming a low beam light-dark cutoff line is arranged at the lower edge of a light exit surface 11 of the low beam optical component. The focus of the lens 30 is located at the cutoff line structure 40. The outgoing light of the low beam optical component 10 enters the lens 30 and is refracted by the lens 30 and then is emitted to form a low beam light pattern on a target plane. The outgoing light of the high beam optical component 20 enters the lens 30 and is refracted by the lens 30 and then is emitted to form a high beam light pattern on the target plane.

[0035] It should be noted that if Figure 5As shown, the headlight optical system 100 includes a low beam light source, a low beam focusing element, a high beam light source and a high beam focusing element, the low beam light source and the low beam focusing element constitute a low beam optical component 10, the low beam light source is located at the focus of the low beam focusing element, so that the outgoing light of the low beam light source is focused by the low beam focusing element to the light emitting surface of the low beam focusing element, the high beam light source and the high beam focusing element constitute a high beam optical component 20, the high beam light source is located at the focus of the high beam focusing element, so that the outgoing light of the high beam light source is focused by the high beam focusing element to the light emitting surface of the high beam focusing element.

[0036] like Figure 5 and Figure 6 As shown, the headlight optical system 100 also includes a lens 30, and the light emitting surface 11 of the low beam optical component and the light emitting surface 21 of the high beam optical component are both facing the light incident surface of the lens 30. A cutoff line structure 40 for forming a low beam light-dark cutoff line is provided at the lower edge of the light emitting surface 11 of the low beam optical component. The focus of the lens 30 is located at the cutoff line structure 40, so that the lens 30 can project and image the light emitted by the low beam optical component 10 and the high beam optical component 20. In this way, the emitted light of the low beam optical component 10 enters the lens 30 and is refracted by the lens 30 and then emitted to form a low beam light type with a low beam light-dark cutoff line on the target plane, and the emitted light of the high beam optical component 20 enters the lens 30 and is refracted by the lens 30 and then emitted to form a high beam light type on the target plane, as shown in FIG. Figure 7 The figure shows the lighting pattern in high beam operation.

[0037] In order to solve the gradient problem of the cut-off line of the low beam in the prior art, the lens 30 includes a lens body 31, and a grid pattern is arranged on the surface of the lens body 31 to reduce the gradient of the cut-off line of the low beam so that it is not too sharp. However, the grid pattern on the surface of the lens body 31 will affect the maximum illumination value (Emax value) of the high beam light pattern and the energy distribution and shape of the light pattern. In order to simultaneously reduce the gradient of the cut-off line of the low beam and ensure that the maximum illumination value of the high beam light pattern and the energy distribution and shape of the light pattern are not affected, such as Figures 1 to 4 As shown, the lens 30 provided by the present application is divided into a first region R1, a second region R2 and a third region R3 in the longitudinal direction on the surface of the lens body 31, the second region R2 is located in the middle of the lens body 31, and the first region R1, the second region R2 and the third region R3 are respectively provided with a first grid pattern, a second grid pattern and a third grid pattern, and the arch height of the second grid pattern is greater than the arch height of the first grid pattern and the third grid pattern. The lens 30 can solve the problem in the prior art that it is not possible to simultaneously reduce the gradient of the low beam cut-off line and not affect the maximum illumination value of the high beam light type and the energy distribution and shape of the light type.

[0038] It should be noted that the surface of the lens body 31 is divided into a first area R1, a second area R2 and a third area R3 in the longitudinal direction. The first area R1, the second area R2 and the third area R3 are respectively provided with a first grid pattern, a second grid pattern and a third grid pattern. The arch height of the second grid pattern is greater than the arch heights of the first grid pattern and the third grid pattern. This can increase the diffusion of the outgoing light in the upward and downward directions after passing through the second area R2, and can also ensure that the outgoing light passing through the first area R1 and the third area R3 does not change significantly, so that the maximum illumination value of the high beam light type can be reduced insignificantly.

[0039] Compared with the lenses in the prior art, the lens 30 provided in the present application, by setting different areas (i.e., the first area R1, the second area R2 and the third area R3) on the surface of the lens body 31, and designing grid patterns with different arch heights for each area (i.e., the first grid pattern, the second grid pattern and the third grid pattern), can not only reduce the gradient of the low beam light cut-off line, but also minimize the impact on the high beam light type, thereby taking into account both reducing the gradient of the low beam light cut-off line and ensuring that the maximum illumination value of the high beam light type and the energy distribution and shape of the light type are not affected.

[0040] like Figures 1 to 4 As shown, in some embodiments, the arch height of the second grid pattern ranges from 0 to 0.005 mm. For example, the arch height of the second grid pattern can be 0.001 mm, 0.002 mm, 0.003 mm, 0.004 mm or 0.005 mm, etc. It should be understood that as the arch height of the second grid pattern increases, the diffusion effect of the outgoing light in the upward and downward directions after passing through the second region R2 becomes more obvious.

[0041] like Figures 1 to 4 As shown, in some embodiments, the arch heights of the first grid pattern and the third grid pattern are equal. Figures 1 to 4 As shown, in some embodiments, the arch heights of the first grid pattern and the third grid pattern are both 0 to ensure that the outgoing light passing through the first region R1 and the third region R3 does not change substantially, thereby making it possible to reduce the maximum illumination value of the high beam light type insignificantly.

[0042] In order to solve the problem in the prior art that the light emitting surface of the high beam system and the low beam cut-off line structure are basically on the same plane in the front-to-back direction, resulting in a clear blue dividing line at the junction of the low beam light-dark cut-off line and the lower boundary of the high beam light pattern when the high beam light pattern formed by the high beam system and the low beam light pattern formed by the low beam system are combined. In some embodiments, the distance between the lower edge of the light emitting surface 11 of the low beam optical component and the light incident surface of the lens 30 is a, and the distance between the upper edge of the light emitting surface 21 of the high beam optical component and the light incident surface of the lens 30 is b, and the following relationship is satisfied: 0.2mm≤ba≤1mm.

[0043] It should be noted that if Figure 5 and Figure 6 As shown, with the lens 30 as a reference point, the distance between the lower edge of the light emitting surface 11 of the low beam optical component and the light incident surface of the lens 30 is a, and the distance between the upper edge of the light emitting surface 21 of the high beam optical component and the light incident surface of the lens 30 is b. The above ba refers to the distance between the light emitting surface 11 of the low beam optical component and the light emitting surface 21 of the high beam optical component in the front-to-back direction (i.e., along the direction from the lens 30 to the low beam optical component 10). Regarding the actual value of ba, those skilled in the art should be able to make reasonable selections and designs according to actual conditions, and no specific restrictions are made here. For example, ba can be 0.2mm, 0.3mm, 0.5mm, 0.8mm or 1mm, etc. It should be understood that as the value of ba increases, the defocus effect of the high beam light pattern formed by the high beam optical component 20 through the lens 30 becomes more obvious, and thus, the low light dark cutoff line and the lower boundary of the high beam light pattern will overlap more, so as to improve the problem of the blue dividing line at the junction.

[0044] In some embodiments, the light emitting surface 21 of the high-beam optical assembly is a convex surface that is convex toward the light emitting direction and a longitudinal section line of the light emitting surface 21 is a curve.

[0045] It should be noted that if Figure 6 As shown, further, the light-emitting surface 21 of the high-beam optical component can be divided into two parts, an upper area Q1 and a lower area Q2, along the longitudinal direction with the high-beam optical axis 22 as the normal line, wherein the curvature of the longitudinal section of the upper area Q1 is greater than the curvature of the longitudinal section of the lower area Q2. At the same time, when designing the light-emitting surface 21 of the high-beam optical component, it is necessary to ensure the continuity of the light-emitting surface 21 of the high-beam optical component in the upper area Q1 and the lower area Q2. Figure 5As shown, the outgoing light of the high beam optical component 20, especially the outgoing light emitted through the upper area Q1, has a greater curvature of the longitudinal section of the upper area Q1, and the convergence of the light in the up-down direction is more obvious, so that the light passing through this area can be incident on the central area of ​​the lens 30. Since the dispersion effect of the central area of ​​the lens 30 is not obvious, the problem of the obvious blue boundary line at the lower boundary of the high beam light pattern can be further improved. When designing the light-emitting surface 21 of the high beam optical component, the curvature of the longitudinal section of the light-emitting surface 21 of the high beam optical component can be designed to be larger, that is, the light-emitting surface 21 of the high beam optical component is more arched, so that the position of the light-emitting surface 21 of the high beam optical component is inconsistent in the front-back direction, and the optical performance of the junction of the low beam light pattern and the high beam light pattern is further improved.

[0046] The embodiment of the present application further provides a vehicle lamp assembly, including the above vehicle lamp optical system 100. Since the structure and beneficial effects of the vehicle lamp optical system 100 have been described in detail in the above embodiments, they will not be described again here.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0048] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

Claims

1. A lens, characterized in that: It includes a lens body, the surface of which is divided into a first area, a second area and a third area in sequence along the longitudinal direction, the second area is located in the middle position of the lens body, the first area, the second area and the third area are respectively provided with a first grid pattern, a second grid pattern and a third grid pattern, and the arch height of the second grid pattern is greater than the arch heights of the first grid pattern and the third grid pattern.

2. The lens according to claim 1, characterized in that The arch height of the second grid pattern ranges from 0 to 0.005 mm.

3. The lens according to claim 1, characterized in that The first grid pattern and the third grid pattern have the same arch height.

4. The lens according to claim 1, characterized in that The arch heights of the first grid pattern and the third grid pattern are both 0.

5. A vehicle light optical system, characterized in that: It includes a low beam light source, a low beam focusing element, a high beam light source, a high beam focusing element and the lens according to any one of claims 1 to 4, the low beam light source and the low beam focusing element constitute a low beam optical component, the high beam light source and the high beam focusing element constitute a high beam optical component, a cut-off line structure for forming a low beam light-dark cut-off line is arranged at the lower end edge of the light emitting surface of the low beam optical component, the focus of the lens is located at the cut-off line structure, the outgoing light of the low beam optical component enters the lens and is refracted by the lens and then is emitted to form a low beam light pattern on a target plane, and the outgoing light of the high beam optical component enters the lens and is refracted by the lens and then is emitted to form a high beam light pattern on the target plane.

6. The vehicle light optical system according to claim 5, characterized in that: The distance between the lower edge of the light emitting surface of the low beam optical component and the light incident surface of the lens is a, and the distance between the upper edge of the light emitting surface of the high beam optical component and the light incident surface of the lens is b, and the following relationship is satisfied: 0.2mm≤ba≤1mm.

7. The vehicle light optical system according to claim 5, characterized in that: The outgoing light of the high-beam optical component enters the central area of ​​the lens and forms a high-beam light pattern on the target plane after being refracted by the lens.

8. The vehicle light optical system according to claim 5, characterized in that: The light emitting surface of the high-beam optical component is a convex curved surface convex toward the light emitting direction, and the longitudinal section line of the light emitting surface of the high-beam optical component is a curve.

9. The vehicle light optical system according to claim 8, characterized in that: The light emitting surface of the high beam optical assembly is divided into an upper area Q1 and a lower area Q2 along the longitudinal direction, and the curvature of the longitudinal section line of the upper area Q1 is greater than the curvature of the longitudinal section line of the lower area Q2.

10. A vehicle lamp assembly, characterized in that: A vehicle light optical system comprising any one of claims 5 to 9.

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