Lens for generating a light distribution for zone III of a dipped beam headlight, vehicle lighting device with such a lens and motor vehicle with such a vehicle lighting device

Abstract

Lens for a vehicle lighting device, wherein the lens is designed to produce a light distribution for zone III of the dipped beam, the lens comprising: a lens body (1) with a light-entry surface and a light-emission surface (14), characterized in that an upper and middle region (11) of the light-entry surface of the lens body (1) in the installed position is a flat surface in the top-bottom direction (Z), while a lower region (12) of the light-entry surface of the lens body (1) in the installed position is a flat surface which is inclined from top to bottom in the installed position against the direction of light emission, wherein a generating structure for zone III of the low beam (13) is provided on or integrally formed with the lower region (12) of the light-entry surface in the installed position, which generating structure for zone III of the low beam (13) comprises several protrusions which serve to continuously and uniformly emit light rays with an illuminance that meets the legal requirements and which project beyond the lower region of the light-entry surface (12),wherein the generation structure for zone III of the dipped beam (13) generates the light distribution for zone III of the dipped beam.

Description

AREA OF INVENTION

[0001] The present invention relates to a motor vehicle light, specifically a lens for a vehicle lighting device, wherein the lens is configured to produce a low-beam three-zone light pattern. The present invention further relates to a vehicle lighting device and a motor vehicle. STATE OF THE ART

[0002] Vehicle lights are an essential component of a motor vehicle and comprise two main types: 1. Signal lights, primarily used to alert pedestrians and other road users to the vehicle's intention to proceed. 2. Lighting lights, primarily used to enable the driver to clearly see the road surface and obstacles, and to perform evasive maneuvers if necessary. Lighting lights include, among other things, low beams, high beams, and reading lights. Low beams provide illumination over a short range. As specified in vehicle lighting standards (such as the Chinese standard GB25991), the third zone is an important component of the low beam configuration.It is located above the light-dark boundary and serves primarily to illuminate traffic signs and other objects on the road surface, so that the driver can inform himself about the traffic signs and other information.

[0003] An existing three-zone dipped beam lighting structure of a motor vehicle is typically arranged on the lower surface of a condenser. Light rays emitted by a light source, after refraction by the three-zone lighting structure located on the underside of the condenser, then exit through the lens, thus producing a three-zone light pattern as part of a dipped beam pattern that meets the legal requirements. Such lighting structures are described, for example, in the patent applications EP 2 372 236 A1, DE 10 2017 112 955 A1, EP 3 412 959 A1, DE 10 2017 208 984 A1, US 2017 / 0 276 309 A1, and DE 10 2016 125 581 A1.

[0004] With the increased demand for a diverse range of vehicle lighting modules, components within these modules are arranged differently to meet various customer requirements. For example, if a vehicle's low-beam three-zone lighting structure is located at the bottom of a condenser, it could very likely be disrupted by components located below the condenser, thus impairing the generation of the three-zone low-beam light pattern.

[0005] For this reason, it is difficult to ensure in the prior art that the generation of the low beam III-zone light shape remains unaffected when the positions and number of individual parts within a vehicle lighting module are changed. REVELATION OF THE INVENTION

[0006] The present invention is based on the initial objective of providing a lens for generating a low-beam III-zone light shape, whereby, when the positions and number of individual parts within a vehicle lighting module are changed, a disturbance of a generating structure of a low-beam III-zone light shape by other parts can be avoided, thus increasing the flexibility of the arrangement of internal parts of a vehicle lighting module and also achieving a flat design, good machinability and stable optical performance.

[0007] Furthermore, the present invention is based on the objective of providing a vehicle lighting device in which, with the lens in the vehicle lighting device, a disturbance of a generating structure of a low beam III-zone light shape by other parts can be avoided when the positions and number of individual parts within a vehicle lighting module are changed, and thus the flexibility of the arrangement of inner parts of a vehicle lighting module can be increased and a flat design, good machinability and stable optical performance can be achieved.

[0008] Furthermore, the present invention is based on the objective of providing a motor vehicle whose vehicle lighting system is characterized by a diverse design, stable low-beam III-zone light shape and high optical efficiency.

[0009] According to a first aspect of the present invention, the problem is solved by a lens according to claim 1.

[0010] In a preferred embodiment of the present invention, the low beam III zone generating structure comprises several strip-shaped longitudinal protrusions extending along an upper-low direction of the lens body.

[0011] Optionally, the low beam III zone generating structure includes several strip-shaped transverse protrusions extending along a left-right direction of the lens body.

[0012] Furthermore, it is optionally provided that the low beam III zone generating structure includes several block-shaped protrusions which are shaped in such a way that they are connected to each other via an outwardly curved surface.

[0013] According to the invention, an upper and middle region of the light entry surface of the lens body is a flat surface in the top-bottom direction, while a lower region of the lens body is a flat surface that is inclined from top to bottom towards the direction of light emission, wherein the low beam III zone generating structure is provided on the lower region of the light entry surface or is formed integrally with it.

[0014] In a further preferred embodiment of the present invention, it is provided that the low beam III zone generating structure comprises several strip-shaped longitudinal protrusions which are arranged one behind the other starting from the left side edge to the right side edge of the light entry surface, wherein the individual strip-shaped longitudinal protrusions are connected to each other and thus form a strip-shaped structure, and wherein a longitudinal section line of the light entry surface of the individual strip-shaped longitudinal protrusions is inclined from top to bottom towards the direction of light emission.

[0015] Optionally, the low beam III zone generating structure includes a bulge structure provided on the light entry surface, formed by the several strip-shaped longitudinal bulges connected to one another, wherein the width of the cross-section of each strip-shaped longitudinal bulge gradually decreases from the center in two lateral directions, and wherein a longitudinal section line of the light entry surface of each strip-shaped longitudinal bulge is inclined from top to bottom towards the direction of light emission.

[0016] In a specific embodiment of the present invention, it is provided that the outer edge of the cross-section of the individual strip-shaped longitudinal protrusions is a convex curve which is higher at its central region than at two lateral regions, wherein the outer edge of the longitudinal section of the individual strip-shaped transverse protrusions is a convex curve which is higher at its central region than at two lateral regions.

[0017] More specifically, it is planned that the individual strip-shaped longitudinal protrusions have the same width, and that the individual strip-shaped transverse protrusions have the same width.

[0018] Furthermore, it is specifically stipulated that the individual block-shaped protrusions are higher in their central area than in their circumferential area.

[0019] In another specific embodiment of the present invention, it is provided that the light exit surface of the lens body is an outwardly curved surface.

[0020] More specifically, it is planned that a grid-like structure will be provided on the light emission surface or that it will be formed as a single unit.

[0021] Furthermore, it is provided that individual grid units in the grid-like structure are each an outwardly curved surface, an inwardly curved surface or a flat surface.

[0022] Furthermore, it is stipulated that the individual grid units in the grid-like structure are each rectangular, square, triangular or polygonal.

[0023] In a further specific embodiment of the present invention, it is provided that the light entry surface is a flat surface or an outwardly curved surface.

[0024] According to another aspect of the present invention, a vehicle lighting device is provided in which a light beam propagation path is formed and which comprises a light source, a primary optical element and a lens, the lens being the lens for generating a low beam III zone light shape according to one of the preceding technical solutions.

[0025] In a specific embodiment of the present invention, it is provided that the primary optical element is a primary optical element of a condenser structure or a primary optical element of a reflector structure.

[0026] In another specific embodiment of the present invention, it is provided that the light source is an LED light source.

[0027] Furthermore, the present invention provides a vehicle comprising a vehicle lighting device according to one of the above technical solutions.

[0028] The foregoing technical solution achieves that the lens according to the invention for generating a low-beam III-zone light pattern comprises a lens body in which a low-beam III-zone generating structure is provided on or integrally formed with the light-entry surface. This low-beam III-zone generating structure comprises several protrusions that serve to spread light rays and project beyond the light-entry surface. The low-beam III-zone generating structure is provided on or integrally formed with the light-entry surface of the lens according to the invention for generating a low-beam III-zone light pattern. This structure is capable of generating a low-beam III-zone light pattern and is characterized by simple construction and ease of machining. Simultaneously, interference with the low-beam III-zone generating structure of the lens by other parts is largely prevented, which ensures more stable optical performance.Further advantages of the present invention and the effect of the preferred embodiments can be seen from the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWING

[0029] This shows Fig. 1 a schematic structural side view of a specific embodiment of a lens according to the present invention, Fig. 2 a three-dimensional schematic structural representation of a specific embodiment of the lens according to the present invention, Fig. 3 a schematic structural enlargement of a first concrete embodiment of a III-zone generation structure according to the present invention, Fig. 4 a schematic structural front view of the first concrete embodiment of the III-zone generation structure according to the present invention, Fig. 5 a schematic structural front view of a second concrete embodiment of the III-zone generation structure according to the present invention, Fig. 6 a schematic structural front view of a third concrete embodiment of the III-zone generation structure according to the present invention, Fig. 7 a schematic structural representation of a first concrete embodiment of a vehicle lighting device according to the present invention, Fig. 8 a schematic structural representation of a second concrete embodiment of the vehicle lighting device according to the present invention, Fig. 9 a representation of the light shape when no low beam III zone light shape is provided, Fig. 10 a representation of the light shape when a low beam III zone generation structure is provided according to the present invention, Fig. 11 a schematic structural representation of a cross-section of a strip-shaped longitudinal bulge according to the present invention, Fig. 12 a schematic structural representation of a longitudinal section of a strip-shaped transverse bulge according to the present invention, Fig. 13 a schematic structural representation of a fourth concrete embodiment of the III-zone generation structure according to the present invention, Fig. 14 a schematic structural side view of the fourth concrete embodiment of the III-zone generation structure according to the present invention, Fig. 15 a schematic sectional view through AA according to Fig. 14 and a close-up of the schematic sectional view, Fig. 16 a schematic structural top view of the fourth concrete embodiment of the III-zone generation structure according to the present invention, Fig. 17 a schematic sectional view through BB according to Fig. 16 and a close-up of the schematic sectional view, Fig. 18 a schematic structural representation of a fifth concrete embodiment of the III-zone generation structure according to the present invention, Fig. 19 a schematic structural representation of a sixth concrete embodiment of the III-zone generation structure according to the present invention, Fig. 20 a schematic structural side view of the sixth concrete embodiment of the III-zone generation structure according to the present invention, Fig. 21 a schematic cross-sectional view through CC according to Fig. 20 and a close-up of the schematic sectional view, Fig. 22 a schematic structural top view of the sixth concrete embodiment of the III-zone generation structure according to the present invention, Fig. 23 a schematic sectional view through DD according to Fig. 22 and a close-up of the schematic sectional view, Fig. 24 a schematic structural representation of a specific embodiment for the light exit surface of the lens according to the present invention and a close-up magnification, Fig. 25 a section magnification of another specific embodiment of the light exit surface of the lens according to the present invention. List of reference symbols: 1 Lens body 11 Upper and middle area of ​​the light entry surface 12 Lower area of ​​the light entry surface 13a Strip-shaped longitudinal bulge 13c Block-shaped bulge 15 Light entry area 13 Low beam III zone generation structure 13b Striated transverse bulge 14 Light emission area 2 Primary optical element DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention will be discussed in more detail below with reference to the accompanying drawings. It is understood that the described specific embodiments serve only to describe and explain the present invention, without limiting it.

[0031] It should first be noted that, in the following description, orienting terms such as "rear end" and "front end" are used to clearly explain the technical solution of the invention and are intended to refer to the path of the emitted light. Using a lens as an example, an end of the lens facing the light source is defined as the rear end, and an end facing away from the light source as the front end. That is, an end into which light rays enter is defined as the rear end, and an end from which light rays exit is defined as the front end. In the present invention, the direction of light emission refers to the direction in which the light rays emitted by a light source propagate towards a lens, namely the path of the light rays.Furthermore, to simplify the explanation according to the description of the overall orientation of a motor vehicle for professionals in the automotive industry, it is stipulated that X represents the front-back direction of a motor vehicle in normal use, Y represents the left-right direction of a motor vehicle in normal use, and Z represents the up-down direction of a motor vehicle in normal use.

[0032] In the description of the present invention, the terms "attaching," "connected," or the like shall be understood in a broad sense unless expressly stated otherwise. Thus, they may refer, for example, to a permanent, detachable, or one-piece connection, as well as a direct connection, an indirect connection made via an intermediate piece, an internal connection between two elements, or a mutual interaction between two elements. Those skilled in the art in this field can use the circumstances as a starting point to determine the intended meaning of the aforementioned terms according to the present invention.

[0033] As can be seen from Fig. 1 and Fig. As shown in Figures 2 and 13 to 23, the lens according to the invention for generating a low-beam III-zone light pattern comprises a lens body 1, wherein a low-beam III-zone generating structure 13 is provided on or integrally formed with a light-entry surface 15 of the lens body 1, which low-beam III-zone generating structure 13 comprises several protrusions that serve to spread light rays and project beyond the light-entry surface 15. In the present invention, a low-beam III-zone generating structure 13 is provided on or integrally formed with the lens. The low-beam III-zone generating structure 13 is arranged at any point on the light-entry surface 15 and serves primarily to generate a low-beam III-zone light pattern, and the low-beam III-zone light pattern is continuous and uniform, and its illuminance meets the legal requirements.

[0034] Furthermore, how from Fig. 1 and Fig. As can be seen from Figure 2, an upper and middle region 11 of the light-entry surface of the lens body 1 is a flat surface in the top-bottom direction Z, while a lower region 12 of the lens body 1 is a flat surface inclined downwards from top to bottom in the direction of light emission. The low-beam III-zone generating structure 13 is provided on or integrally formed with the lower region 12 of the light-entry surface. The low-beam III-zone generating structure 13 comprises several protrusions that serve to spread light rays and project beyond the light-entry surface 12. In the present invention, the several protrusions of the lower region 12 of the light-entry surface serve to spread light rays in order to ensure that the III-zone light shape of the low-beam shape is continuous and uniform and that its illuminance meets the legal requirements.

[0035] In the present invention, the upper and middle region 11 of the light-entry surface of the lens body 1 is a flat surface arranged along the top-bottom direction Z. The lower region 12 of the light-entry surface is inclined downwards from top to bottom in the direction of light emission. This allows light rays entering the low-beam III-zone generating structure to be refracted by the light-emission surface 14 of the lens body 1 to the III-zone of the low-beam shape, namely to a point above the cut-dark boundary.At the same time, by arranging the low-beam III zone generating structure 13 on the lower area 12 of the light exit surface of the lens body 1, it can be caused that light rays enter the lens body 1 via the low-beam III zone generating structure 13 and exit from the light exit surface 14 of the lens body 1, after which a III zone light shape is generated as part of the low-beam shape.

[0036] As can be seen from Fig. 2, Fig. 3 to Fig. 4 results in a specific embodiment of the present invention, in which the low beam III zone generating structure 13 comprises several strip-shaped longitudinal protrusions 13a which extend along an upper-low direction Z of the lens body 1.

[0037] More specifically, it is provided that the outer edge of the cross-section of the individual strip-shaped longitudinal protrusions 13a is a convex curve that is higher at its central region than at two lateral regions. Furthermore, it is specifically provided that the individual strip-shaped longitudinal protrusions 13a have the same width.

[0038] As from Fig. As can be seen from Figure 11, the curve of the outer edge of the cross-section of the individual strip-shaped longitudinal protrusions 13a is higher at its central region than at two lateral regions, and the individual strip-shaped longitudinal protrusions 13a have the same width. The strip-shaped longitudinal protrusions 13a contribute to a spreading of the light rays in a left-right direction Y.

[0039] As can be seen from Fig. 5 results in an optional specific embodiment of the specific embodiment of the present invention, in which the low beam III zone generating structure 13 comprises several strip-shaped transverse protrusions 13b which extend along the left-right direction Y of the lens body 1.

[0040] More specifically, it is provided that the outer edge of the longitudinal section of the individual strip-shaped transverse protrusions 13b is a convex curve that is higher at its middle area than at two lateral areas.

[0041] Furthermore, it is specifically provided that the individual strip-shaped transverse protrusions- 13b have the same width.

[0042] As from Fig. As can be seen from Figure 12, the curve of the outer edge of the longitudinal section of the individual strip-shaped transverse protrusions 13b is higher at its central region than at two lateral regions, and the individual strip-shaped transverse protrusions 13b have the same width. The strip-shaped transverse protrusions 13b contribute to a spreading of the light rays in the top-down direction Z.

[0043] As can be seen from Fig. In another optional specific embodiment of the present invention, the low-beam III-zone generating structure 13 comprises several block-shaped protrusions 13c, which are shaped such that they are connected to one another via an outwardly curved surface. In a specific embodiment of the optional specific embodiment, the individual block-shaped protrusions 13c are higher at their central region than at their circumferential region, and the block-shaped protrusions 13c contribute to a spreading of the light rays in the direction of the circumference.

[0044] In the three specific embodiments described above of the present invention, the protrusions of the low-beam III-zone generating structure 13 are each configured as strip-shaped longitudinal protrusions 13a, strip-shaped transverse protrusions 13b, and block-shaped protrusions 13c. The strip-shaped longitudinal protrusions 13a allow the light rays passing through them to spread in the left-right direction Y. The strip-shaped transverse protrusions 13b allow the light rays passing through them to spread in the up-down direction Z. The block-shaped protrusions 13c allow the light rays passing through them to spread circumferentially.However, in the present invention, the protrusions of the low beam III zone generating structure 13 are not limited to the three shapes and other shapes are also conceivable, whereby the specific shape is to be changed depending on the requirements of the light shape.

[0045] In another specific embodiment of the present invention, it is provided that the low beam III zone generating structure 13 comprises several strip-shaped longitudinal protrusions 13a, which are arranged one behind the other starting from the left side edge to the right side edge of the light entry surface 15, wherein the individual strip-shaped longitudinal protrusions 13a are connected to each other and thus form a strip-shaped structure, and wherein a longitudinal section line of the light entry surface of the individual strip-shaped longitudinal protrusions 13a is inclined from top to bottom towards the direction of light emission.

[0046] Optionally, the low beam III zone generating structure 13 includes a bulge structure provided on the light entry surface 15, which is formed by the several strip-shaped longitudinal bulges 13a which are connected to each other, wherein the width of the cross-section of the individual strip-shaped longitudinal bulges 13a gradually decreases from the center in two lateral directions, and wherein a longitudinal section line of the light entry surface of the individual strip-shaped longitudinal bulges 13a is inclined from top to bottom towards the direction of light emission.

[0047] In the low beam III zone generation structure 13 according to Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. 6 is a bulge structure that is arranged over the entire lower area 12 of the light entry surface of the lens body 1. As shown from Fig. 13 and Fig. As can be seen from Figure 18, the low-beam III-zone generating structure 13 can also consist of several strip-shaped longitudinal protrusions 13a arranged one behind the other, starting from the left side edge and extending to the right side edge of the light-intake surface 15. The strip-shaped longitudinal protrusions 13a are connected to each other, thus forming a strip-shaped structure. In order to meet the light distribution requirement of the low-beam III-zone light shape, the longitudinal section line of the light-intake surface of the strip-shaped longitudinal protrusions 13a is inclined from top to bottom towards the direction of light emission, as can be seen from Figure 18. Fig. 17 results. As can be seen from Fig. 19 and Fig. 22, the low-beam III-zone generating structure 13 can also be a bulge structure arranged on the light entry surface 15, formed by several interconnected strip-shaped longitudinal bulges 13a. The position and shape of the bulge structure can be designed depending on the actual generation requirement of the low-beam III-zone light shape. For example, the bulge structure is located according to Fig. 19 in the middle of the upper region of the light-entry surface 15 and its several strip-shaped longitudinal projections 13a have a length that gradually decreases from the center in two lateral directions. Similarly, the longitudinal section line of the light-entry surface of the strip-shaped longitudinal projections 13a is inclined from top to bottom towards the direction of light emission, as can be seen from Fig. 20 results in order to meet the light distribution requirement of the low beam III-zone light pattern. It is understood that the bulges according to Fig. 13, Fig. 18 and Fig. 19 the strip-shaped transverse protrusions 13b or the block-shaped protrusions 13c or another design may also be used.

[0048] As can be seen from Fig. As shown in Figure 13, the low-beam III zone generating structure 13 is arranged on the lower region of the light emission surface 15, wherein the light entry surface 15 is a flat surface in the top-bottom direction Z. As shown in Figure 13, the low-beam III zone generating structure 13 is arranged on the lower region of the light emission surface 15, where the light emission surface 15 is a flat surface in the top-bottom direction Z. Fig. 14, Fig. 15, Fig. 16, Fig. 17, Fig. 18, Fig. 19, Fig. 20, Fig. 21, Fig. 22 to Fig. As can be seen from Figure 23, the low-beam III-zone generating structure 13 is arranged on the upper part of the light-emitting surface 15, the light-intake surface 15 being a flat surface in the top-bottom direction Z. Changing the position of the low-beam III-zone generating structure 13 on the light-intake surface 15 does not affect the generation of the low-beam III-zone light shape.Therefore, the low-beam III-zone generating structure 13 can be arranged at any point on the light entry surface 15 according to practical need, provided that, by using a low-beam III-zone generating structure 13 that fulfills the light distribution requirement of the low-beam III-zone and which can be in various forms, light rays can enter the lens body 1 via the low-beam III-zone generating structure 13, then exit the light exit surface 14 of the lens body 1 and subsequently generate the III-zone light shape as part of the low-beam shape.

[0049] In another specific embodiment of the present invention, it is provided that the light exit surface 14 of the lens body 1 is an outwardly curved surface.

[0050] In a further specific embodiment of the present invention, it is provided that a grid-like structure is provided on the light emission surface 14 or is formed integrally with it.

[0051] Furthermore, it is provided that individual grid units in the grid-like structure are each an outwardly curved surface, an inwardly curved surface, or a flat surface. More specifically, it is provided that the individual grid units in the grid-like structure, if they are each flat surfaces, are rectangular, square, triangular, or polygonal and can have other irregular contour shapes. In the grid-like structure according to Fig. 24 is a lattice-like structure subdivided by the intersecting transverse and longitudinal directions. The lattice-like structure according to Fig. 25 is a grid-like structure subdivided by intersecting oblique directions. However, the grid-like structure at the light-emitting surface 14 of the present invention is not limited to these two possibilities and can be designed depending on the actual requirements of the light shape.

[0052] Obviously, a grid-like structure can be provided on the light emission surface 14, which can increase the illumination angle and improve the uniformity of the light shape.

[0053] In another specific embodiment of the present invention, it is provided that the light entry surface 15 is a flat surface or an outwardly curved surface.

[0054] As can be seen from Fig. 24 and Fig. According to the present invention, if the lens is a biconvex lens, then both the light-entry surface 14 and the light-emission surface 15 are outwardly curved surfaces. If the light-emission surface 14 is an outwardly curved surface and the light-entry surface 15 is a flat surface, then the lens according to the present invention is a plano-convex lens. It should be noted that the specific III-zone generating structure 13 is not necessarily related to whether the lens according to the present invention is a biconvex lens or a plano-convex lens; thus, both a biconvex lens and a plano-convex lens can be used in combination with any III-zone generating structure 13.

[0055] The present invention further provides a vehicle lighting device in which a light beam propagation path is formed and which comprises a light source, a primary optical element 2 and a lens, the lens being the lens for generating a low beam III zone light shape according to one of the preceding technical solutions.

[0056] Preferably, the primary optical element 2 is a primary optical element of a condenser structure or a primary optical element of a reflector structure.

[0057] In the specific example shown, according to Fig. 7 The primary optical element 2 is a primary optical element of a condenser structure. Light rays emitted by a light source, after being collected by the primary optical element of the condenser structure, enter the lens according to the invention to generate a low-beam III-zone light shape and are then refracted outwards by the light exit surface 14 of the lens body 1, thereby generating a low-beam III-zone light shape.

[0058] In the specific example shown, according to Fig. 8 The primary optical element 2 is a primary optical element of a reflector structure. Light rays emitted by a light source enter the lens according to the invention after reflection through the primary optical element of the reflector structure to generate a low-beam III-zone light shape and are then refracted outwards by the light exit surface 14 of the lens body 1, thereby generating a low-beam III-zone light shape.

[0059] With the two aforementioned specific implementation options according to Fig. 7 and Fig. 8. A low-beam three-zone light pattern can be generated. The specific design to be used can be determined depending, among other things, on the manufacturing costs and the spatial design of the vehicle lighting module.

[0060] Preferably, the light source should be an LED light source.

[0061] As a new energy technology, LED light sources have gradually replaced conventional light sources and are characterized not only by energy-saving and environmentally friendly operation, but also by high brightness, stable performance, and high purity of light emission. Therefore, vehicle lighting systems designed based on LED light sources have broad development prospects.

[0062] It should be noted that the use of an LED light source as a light source in the present invention should not be interpreted as a restriction to the LED light source and the use of a laser light source or a similar light source should be considered an equivalent substitution.

[0063] Fig. Figure 9 shows a representation of the light shape when no low beam III zone light shape is provided, while Fig. Figure 10 shows a representation of the light shape when a low beam III-zone generation structure is provided. In the light shape representation according to Fig. 10 Light rays emitted by the LED light source enter the lens according to the invention after passing through the primary optical element 2 to generate a low-beam III-zone light shape and are then refracted outwards by the light exit surface 14 of the lens body 1, thus generating a low-beam III-zone light shape. To evaluate the light shape representation of the low-beam III-zone in the vehicle lighting system, a light test screen must be provided in the vehicle lighting system, which is a vertical screen arranged 25 m in front of the vehicle. As can be seen from a comparison of the low-beam III-zone light shape projected onto the light test screen, the low-beam III-zone light shape is in Fig. 10 around the part of the light shape above the light-dark boundary (namely the part of the light shape marked with a box), while in the light shape representation according to Fig. 9, in which no low-beam III-zone generating structure 13 is provided, no low-beam III-zone light shape is generated on the light test screen. Furthermore, the low-beam III-zone generating structure 13 is arranged at the light entrance surface 15 of the lens body 1, which ensures a more compact design and largely prevents interference from other parts and avoids an increase in manufacturing costs.

[0064] Furthermore, the present invention provides a vehicle comprising a vehicle lighting device according to one of the above technical solutions.

[0065] As can be seen from the above description, the lens according to the invention for generating a low-beam III-zone light pattern comprises a lens body 1, on the light entrance surface 15 of which a low-beam III-zone generating structure 13 is provided or integrally formed, which low-beam III-zone generating structure 13 comprises several protrusions that serve to spread light rays and project beyond the light entrance surface 15. A low-beam III-zone generating structure 13 is provided or integrally formed on the light entrance surface 15 of the lens according to the invention for generating a low-beam III-zone light pattern, which can generate a low-beam III-zone light pattern and is arranged on the light entrance surface 15 of the lens body 1, which ensures simple construction and ease of machining.At the same time, interference with the low beam III zone generation structure 13 of the lens by other parts is largely prevented, which ensures more stable optical performance.

[0066] Preferred embodiments of the present invention have been explained in more detail up to this point with reference to the accompanying drawings. However, the present invention is by no means limited to the specific details of the embodiments described above; rather, various simple variants for the technical solution of the invention are possible within the framework of the basic technical ideas of the invention, and these simple variants also fall within the scope of protection of the present invention.

[0067] Furthermore, it should be noted that the individual specific technical features described in the aforementioned concrete embodiments can be combined with one another in a suitable manner, provided there is no contradiction. To avoid unnecessary repetition, a separate description of various possible combinations is omitted here.

[0068] Furthermore, different embodiments of the present invention can be combined with one another as desired, provided that there is no contradiction to the basic idea of ​​the invention, and such combinations shall also be considered as disclosed content of the present invention.

Claims

[1] Lens for a vehicle lighting device, wherein the lens is designed to produce a light distribution for zone III of the dipped beam, the lens comprising: a lens body (1) with a light entry surface and a light exit surface (14), characterized by, that an upper and middle region (11) of the light entry surface of the lens body (1) in the installed position is a flat surface in the top-bottom direction (Z), while a lower region (12) of the light entry surface of the lens body (1) in the installed position is a flat surface which is inclined from top to bottom in the installed position against the direction of light emission, wherein a generating structure for zone III of the low beam (13) is provided on or integrally formed with the lower region (12) of the light entry surface in the installed position, which generating structure for zone III of the low beam (13) comprises several protrusions which serve to continuously and uniformly emit light rays with an illuminance that meets the legal requirement and which project beyond the lower region of the light entry surface (12), wherein the generating structure for zone III of the low beam (13) generates the light distribution for zone III of the low beam. [2] Lens for generating a light distribution for zone III of the dipped beam according to claim 1, characterized by , that the generating structure for zone III of the dipped beam (13) comprises several strip-shaped longitudinal protrusions (13a) extending along an up-down direction (Z) of the lens body (1), or that the generating structure for zone III of the dipped beam (13) comprises several strip-shaped transverse protrusions (13b) extending along a left-right direction (Y) of the lens body (1), or that the generating structure for zone III of the dipped beam (13) comprises several block-shaped protrusions (13c) which are shaped in such a way that they are connected to each other via an outwardly curved surface. [3] Lens for generating a light distribution for zone III of the dipped beam according to claim 2, characterized by, that the generating structure for zone III of the dipped beam (13) comprises several strip-shaped longitudinal protrusions (13a) arranged one behind the other from the left side edge to the right side edge of the light-entry surface (15), wherein the individual strip-shaped longitudinal protrusions (13a) are connected to each other and thus form a strip-shaped structure, and wherein a longitudinal section line of the light-entry surface of the individual strip-shaped longitudinal protrusions (13a) is inclined from top to bottom towards the direction of light emission, or that the generating structure for zone III of the dipped beam (13) comprises a protrusion structure provided on the light-entry surface (15) which is formed by the several strip-shaped longitudinal protrusions (13a) which are connected to each other,wherein the width of the cross-section of the individual strip-shaped longitudinal protrusions (13a) gradually decreases from the center in two lateral directions, and wherein a longitudinal section line of the light-entry surface of the individual strip-shaped longitudinal protrusions (13a) is inclined from top to bottom towards the direction of light emission. [4] Lens for generating a light distribution for zone III of the dipped beam according to claim 2, characterized by , that in the case of strip-shaped longitudinal bulges the outer edge of the cross-section of the individual strip-shaped longitudinal bulges (13a) is a convex curve which is higher at its middle area than at two lateral areas, or that in the case of strip-shaped transverse bulges the outer edge of the longitudinal section of the individual strip-shaped transverse bulges (13b) is a convex curve which is higher at its middle area than at two lateral areas. [5] Lens for generating a light distribution for zone III of the dipped beam according to claim 2, characterized by , that in the case of strip-shaped longitudinal bulges the individual strip-shaped longitudinal bulges (13a) have the same width, or that in the case of strip-shaped transverse bulges the individual strip-shaped transverse bulges (13b) have the same width. [6] Lens for generating a light distribution for zone III of the dipped beam according to claim 2, characterized by , that in the case of block-shaped protrusions, the individual block-shaped protrusions (13c) are higher at their middle area than at their periphery. [7] Lens for generating a light distribution for zone III of the dipped beam according to claim 1, characterized by , that the light exit surface (14) of the lens body (1) is an outwardly curved surface. [8] Lens for generating a light distribution for zone III of the dipped beam according to claim 7, characterized by , that a grid-like structure is provided or formed in one part with the light emission surface (14). [9] Lens for generating a light distribution for zone III of the dipped beam according to claim 8, characterized by , that individual grid units in the grid-like structure are each an outwardly curved surface, an inwardly curved surface or a flat surface. [10] Lens for generating a light distribution for zone III of the dipped beam according to claim 9, characterized by , that the individual grid units in the grid-like structure are each rectangular, square, triangular or polygonal in shape. [11] Vehicle lighting equipment, characterized by, comprising a light source, a primary optical element (2) and a lens for generating a light distribution for zone III of the low beam according to any one of claims 1 to 10. [12] Vehicle lighting device according to claim 11, characterized by that the light source is an LED light source. [13] motor vehicle, characterized by that it comprises a vehicle lighting device according to one of claims 11 or 12.

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