A low beam optical element, a vehicle headlight module, a vehicle lighting device, and a vehicle

Abstract

The present invention relates to a vehicle lamp, and discloses a low beam optical element, which includes a plurality of juxtaposed low beam optical units that are successively provided with a light incident portion (1), a light transmitting portion (2), and a light emitting portion (3). The light emitting portions on each low beam optical unit are connected as a whole. A groove structure (21) is provided at the lower portion of the light transmitting portion or at the lower portion of the connecting portion with the light incident portion. The groove structure includes two side surfaces and a top surface. The side surface close to the light incident portion is the light emitting surface (213) of Zone III, the side surface far from the light incident portion is the light incident surface (214) of Zone III, the connection portion between the top surface and the light incident surface of Zone III is the low beam cut-off portion (212), and a light dimming structure (211) is provided on at least one of the two side surfaces. Light can be converged by the light incident portion to be emitted from the light emitting surface of Zone III, then enter the light transmitting portion through the light incident surface of Zone III and be guided to be emitted from the light emitting portion to form the light pattern of Zone III. In addition, the present invention also relates to a vehicle lamp module, a vehicle lighting device, and a vehicle. The low beam optical element of the present invention can form an ultra-wide light pattern of Zone III.

Description

Technical Field

[0001] The present invention relates to vehicle lamps, and specifically, to a low beam optical element. In addition, the present invention also relates to a vehicle lamp module, a vehicle lighting device, and a vehicle. Background Art

[0002] With the rapid development of highway traffic modernization and high density, the ownership of vehicles is also increasing. Motor vehicle lighting regulations have put forward higher requirements for the design of the low beam light pattern of headlamps. Among them, Area III is an important part of the low beam light pattern. It is located above the low beam cut-off line and mainly illuminates objects such as road signs set on the road above the road surface, so that the driver can clearly obtain road information, etc.

[0003] AFS (Adaptive Frontlighting System), which can dynamically adjust the headlamps according to the steering wheel angle, vehicle yaw rate, and driving speed of the vehicle, keep the light direction consistent with the current driving direction of the vehicle, ensure the best illumination of the road ahead, provide the best visibility for the driver, and thus significantly enhance the safety of driving at night. In order to achieve the illumination of Area III under the AFS function of the vehicle, it is necessary to design a wide enough light pattern for Area III to meet the regulatory requirements that the widening of the light pattern for Area III of the low beam needs to reach more than 30°.

[0004] For the Area III light pattern illumination module in the prior art, either the widening width of the light pattern for Area III that can be formed is too small to meet the requirements of the widening width of the light pattern for Area III required to implement AFS stipulated by relevant regulations; or the widening width of the light pattern for Area III that can meet the requirements of relevant regulations can be formed, but its structure is extremely complex and the volume is large, which is not conducive to installation and maintenance, and the manufacturing cost is high.

[0005] In view of this, it is necessary to design a low beam optical element. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a low beam optical element with a simple structure and small volume, which can form an ultra-wide light pattern for Area III.

[0007] In addition, another problem to be solved by the present invention is to provide a vehicle lamp module, which can form an ultra-wide light pattern for Area III that meets the requirements of relevant regulations, and can also form an inflection point light pattern to improve the lighting effect on the right side of the road and above the right side of the road.

[0008] Furthermore, the problem to be solved by the present invention is to provide a vehicle lighting device with a simple structure, which can accurately control the light intensity of some areas within the light pattern for Area III formed, and can prevent glare to the driver or pedestrians on oncoming vehicles.

[0009] Furthermore, the problem to be solved by the present invention is to provide a vehicle having an ultra-wide light pattern in Zone III, which can expand the driver's field of vision and improve the safety of night driving.

[0010] To solve the above technical problems, on the one hand, the present invention provides a low-beam optical element, including a plurality of juxtaposed low-beam optical units. The low-beam optical units are sequentially provided with a light incident portion, a light passing portion, and a light emitting portion along the light emitting direction. The light emitting portions on each of the low-beam optical units are connected as a whole. A groove structure extending along the width direction of the light passing portion is provided at the lower part of the light passing portion or at the lower part of the connection portion between the light passing portion and the light incident portion. The groove structure includes two side surfaces and a top surface. The surface of one of the two side surfaces close to the light incident portion is formed as a light emitting surface in Zone III, the surface of the other side surface away from the light incident portion is formed as a light incident surface in Zone III, and the connection portion between the top surface and the light incident surface in Zone III is formed as a low-beam cut-off portion. A dimming structure is provided on at least one of the light emitting surface in Zone III and the light incident surface in Zone III. The light emitted from the light incident portion to the light emitting surface in Zone III is emitted from the light emitting surface in Zone III to the light incident surface in Zone III, so as to be able to enter the light passing portion through the light incident surface in Zone III and be guided to the light emitting portion through the light passing portion and emitted, so as to form a light pattern in Zone III.

[0011] Specifically, the light emitting surfaces of the plurality of light emitting portions connected as a whole are set as smooth curved surfaces.

[0012] Preferably, the light incident portion, the light passing portion, and the light emitting portion are integrally formed.

[0013] More preferably, the plurality of low-beam optical units are integrally formed.

[0014] Specifically, the light incident portion and the light passing portion are integrally formed and are separately provided from the light emitting portion. The light emitting portion includes a light incident surface of the light emitting portion and a light emitting surface of the light emitting portion.

[0015] More specifically, the low-beam cut-off portion is set to enable the light emitted from the low-beam optical element to form a low-beam inflection cut-off line, and the light incident surface of the light emitting portion is a convex curved surface.

[0016] More specifically, the light incident portion is a condenser cup structure.

[0017] Preferably, the size of the light emitting surface in Zone III in the up and down direction is 0.8 mm - 1.2 mm.

[0018] Specifically, the dimming structure includes a plurality of dimming units arranged horizontally in parallel. The dimming units include a curved dimming unit, a flat dimming unit, a bump dimming unit, a stripe dimming unit, and a pattern dimming unit, and the dimming structure includes one or more of the curved dimming unit, the flat dimming unit, the bump dimming unit, the stripe dimming unit, and the pattern dimming unit.

[0019] On the other hand, the present invention further provides a vehicle headlight module, which includes a light source and a plurality of low-beam optical elements described in any one of the above technical solutions, and the light source corresponds to the light incident portions of the respective low-beam optical units one by one.

[0020] Furthermore, the present invention also provides a vehicle lighting device, which includes the vehicle headlight module described in any one of the above technical solutions.

[0021] Furthermore, the present invention also provides a vehicle, which includes the vehicle lighting device described in any one of the above technical solutions.

[0022] Through the above technical solutions, for the low-beam optical element provided in the first aspect of the present invention, each of the low-beam optical units forms a groove structure at the lower part of the light passing portion or at the connection between the light passing portion and the light incident portion, so that a part of the light converged by the light incident portion can enter the light passing portion through the refraction of the light emitting surface and the light incident surface of the III-region light pattern in the groove structure, and is guided by the light passing portion to the light emitting portion to emit light to form a III-region light pattern. Thus, the structure of the low-beam optical unit is simple and the volume is small. The low-beam optical element arranges a plurality of low-beam optical units horizontally in parallel, so that the light patterns emitted by the respective low-beam optical units can be superimposed on each other to form an ultra-wide III-region light pattern that meets the relevant regulations. At least one of the III-region light emitting surface and the III-region light incident surface is provided with a dimming structure, and the dimming structure can be composed of dimming units of different structural forms according to certain requirements. Therefore, when the light passes through the dimming structure, the dimming structure can further adjust the refraction direction of part of the light, so that the brightness of some areas in the finally formed III-region light pattern is darker, realizing precise control of the brightness and darkness of different areas in the III-region light pattern, and further effectively avoiding dazzling the drivers of oncoming vehicles or pedestrians on the road, thus improving the safety of night driving.

[0023] For the vehicle headlight module provided in the second aspect of the present invention, since it has the above-mentioned low-beam optical element, it also has all the functions and advantages of this low-beam optical element.

[0024] The vehicle lighting device provided in the third aspect of the present invention has a simple structure and is easy to install due to the above-mentioned headlight module. Moreover, it can precisely control the brightness of different regions within the ultra-wide III-zone light pattern, avoiding glare to the drivers of oncoming vehicles or pedestrians on the road, and greatly improving the safety of night driving.

[0025] The vehicle provided in the fourth aspect of the present invention has a vehicle lighting device that can provide an ultra-wide III-zone light pattern. Therefore, the vehicle has an ultra-wide III-zone light pattern, which can expand the driver's field of vision and enhance the safety of night driving.

[0026] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a side view and a light path schematic diagram of an embodiment of the low-beam optical unit in the low-beam optical element of the present invention;

[0028] Figure 2 It is a bottom view of an embodiment of the low-beam optical unit in the low-beam optical element of the present invention;

[0029] Figure 3 It is a three-dimensional structure view of an embodiment of the low-beam optical unit in the low-beam optical element of the present invention;

[0030] Figure 4 It is Figure 3 A partial enlarged view of a dimming structure in area A in

[0031] Figure 5 It is the low-beam optical unit in the low-beam optical element of the present invention that adopts Figure 4 The equal illuminance diagram of the light pattern formed by the dimming structure in

[0032] Figure 6 It is Figure 3 A partial enlarged view of another dimming structure in area A in

[0033] Figure 7 It is the low-beam optical unit in the low-beam optical element of the present invention that adopts Figure 6 The equal illuminance diagram of the light pattern formed by the dimming structure in

[0034] Figure 8 It is a bottom view of an embodiment of the headlight module of the present invention;

[0035] Figure 9 It is a three-dimensional structure schematic diagram of an embodiment of the headlight module of the present invention;

[0036] Figure 10is an iso-illuminance diagram of a light shape formed by an embodiment of the vehicle lamp module of the present invention;

[0037] Figure 11 It is a three-dimensional structural schematic diagram of another embodiment of a low beam optical unit in a low beam optical element of the present invention;

[0038] Figure 12 It is a side view and a light path schematic diagram of another embodiment of a low beam optical unit in a low beam optical element of the present invention;

[0039] Figure 13 is a bottom view of another embodiment of a low beam optical unit in a low beam optical element of the present invention;

[0040] Figure 14 It is a schematic diagram of a preferred structure of the groove structure of the low beam optical unit in the low beam optical element of the present invention.

[0041] Description of Reference Numerals

[0042] 1-light-entering part 2-light-passing part

[0043] 21-groove structure 211-dimming structure

[0044] 2111- dimming unit 212- low beam cut-off part

[0045] 213-III zone light emitting surface 214-III zone light incident surface

[0046] 3-Light exit part 31-Light entrance surface of the light exit part

[0047] 32-Light exit surface 4-Light source DETAILED DESCRIPTION

[0048] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0049] First of all, it should be noted that the following directional terms are based on the vehicle as the reference system after the low beam optical element is installed on the vehicle, the front-to-back direction is the vehicle length direction, the left-to-right direction is the vehicle width direction, and the up-down direction is the vehicle height direction; Figure 5 , Figure 7 and Figure 10The units of both the abscissa and the ordinate are degrees (angles). The abscissa indicates the left-right direction, where the negative direction is to the left and the positive direction is to the right; the ordinate indicates the up-down direction, where the negative direction is down and the positive direction is up. The B50L measurement point corresponds to the eye position of the driver on the oncoming vehicle 50 meters ahead to the left front. The HV point is the foot of the perpendicular from the horizontal line passing through the reference center of the lamp to the photometric screen. In addition, the low-beam module described below is a headlamp module capable of forming a complete low-beam light pattern. The main low-beam module is a headlamp module capable of forming the light pattern in the low-beam central area. The light pattern in the low-beam central area has a low-beam inflection cut-off line. The auxiliary low-beam module is a headlamp module capable of forming the light pattern in the low-beam broadening area. The light pattern in the low-beam central area and the light pattern in the low-beam broadening area are superimposed to form a complete low-beam light pattern. The light pattern in the low-beam central area has a low-beam inflection cut-off line, and the light pattern in the low-beam broadening area has a low-beam horizontal cut-off line.

[0050] As an embodiment of the low-beam optical element provided in the first aspect of the present invention, it includes a plurality of juxtaposed low-beam optical units. The low-beam optical units are sequentially provided with a light incident portion 1, a light transmitting portion 2, and a light emitting portion 3 along the light emitting direction. The light emitting portions 3 on each of the low-beam optical units are connected as a whole. A groove structure 21 extending along the width direction of the light transmitting portion 2 is provided at the lower part of the light transmitting portion 2 or at the lower part of the connection part between the light transmitting portion 2 and the light incident portion 1. The groove structure 21 includes two side surfaces and a top surface. The surface of one of the two side surfaces close to the light incident portion 1 is formed as the III-region light emitting surface 213, and the surface of the other side surface far from the light incident portion 1 is formed as the III-region light incident surface 214. The connection part between the top surface and the III-region light incident surface 214 is formed as the low-beam cut-off portion 212. A light regulating structure 211 is provided on at least one of the III-region light emitting surface 213 and the III-region light incident surface 214. The light incident from the light incident portion 1 to the III-region light emitting surface 213 is emitted from the III-region light emitting surface 213 to the III-region light incident surface 214, so as to be able to enter the light transmitting portion 2 through the III-region light incident surface 214, and be guided by the light transmitting portion 2 to be emitted from the light emitting portion 3 for forming the III-region light pattern.

[0051] In each low-beam optical unit of the low-beam optical element of the present invention, by grooving at the lower part of the respective light-transmitting part 2 or at the lower part of the connection between the light-transmitting part 2 and the light-incident part 1, a part of the light converged by the light-incident part 1 can enter the light-transmitting part 2 through the refraction of the light-emitting surface 213 and the light-incident surface 214 of the III-region light pattern in the groove structure, and is guided by the light-transmitting part 2 to the light-emitting part 3 and emitted to project onto the low-beam III-region area. Another part of the light converged by the light-incident part 1 is directly projected from the light-transmitting part to the light-emitting part 3, and under the action of the low-beam cut-off part 212, is projected by the light-emitting part 3 onto the area below the low-beam cut-off line. Each low-beam optical unit has a simple structure and a small volume; the low-beam optical element arranges a plurality of low-beam optical units horizontally in parallel, so that the light patterns emitted by each low-beam optical unit can be superimposed on each other to form a low-beam light pattern with an ultra-wide III-region light pattern that meets the requirements of relevant regulations; at the same time, the light-emitting parts 3 of each low-beam optical unit are connected as a whole, which can meet the styling requirements of the narrow and long light-emitting opening of the vehicle lamp, and each low-beam optical unit has light projected onto the III-region area, so that when a person stands in front of the vehicle lamp to observe the vehicle lamp, light enters the human eye, optimizing the overall lighting effect of the vehicle lamp and enhancing the visual effect; at least one of the III-region light-emitting surface 213 and the III-region light-incident surface 214 is provided with a dimming structure 211, and the dimming structure 211 can be composed of dimming units of different structural forms according to certain requirements, so that when the light passes through the dimming structure 211, the dimming structure 211 can further adjust the refraction direction of part of the light, so that the brightness of some areas in the finally formed III-region light pattern is darker, realizing precise control of the brightness and darkness of different areas in the III-region light pattern, and thus effectively avoiding dazzling the driver of an oncoming vehicle or pedestrians on the road, improving the safety of night driving; in addition, the depth of the low-beam cut-off part 212, that is, the groove depth of the groove structure 21, is preferably at half of the upper and lower thickness dimensions of the low-beam optical unit. Such a preferred design can ensure that the light-transmitting part 2 at the grooved part has sufficient thickness to maintain sufficient structural strength, so that the grooved part of the light-transmitting part 2 is not easily broken.

[0052] Specifically, as Figure 8 , Figure 9 shown, as a preferred embodiment of the low-beam optical element of the present invention, the light-emitting surfaces of the plurality of light-emitting parts 3 connected as a whole are set as smooth curved surfaces to meet the requirements of the vehicle lamp styling surface.

[0053] Preferably, as Figure 3As shown in the figure, as a preferred embodiment of the low beam optical element of the present invention, the light incident part 1, the light passing part 2 and the light emitting part 3 are integrally formed. The integrally formed design can make the low beam optical element have a compact structure and a small volume on the one hand, and is convenient for the installation and fixation of the low beam optical element compared with the split design; on the other hand, the integrally formed design makes the low beam optical element have higher structural strength.

[0054] Furthermore, as Figure 9 shown, a plurality of low beam optical units are integrally formed, that is, the light passing parts 2 and the light incident parts of each low beam optical unit are also connected as a whole, with a compact structure and convenient and fast installation. Specifically, the III-zone light pattern light emitting surfaces 213 on each low beam optical unit can be smoothly connected; the III-zone light pattern light incident surfaces 214 on each low beam optical unit can be smoothly connected; the integrally formed low beam optical element can be used in an auxiliary low beam module capable of forming an auxiliary low beam light pattern with an ultra-wide III-zone light pattern, and its low beam cut-off part 212 does not have an inflection point for forming the low beam horizontal cut-off line of the auxiliary low beam light pattern. Therefore, this auxiliary low beam module also needs to be paired with a main low beam module capable of forming a low beam inflection point cut-off line.

[0055] Preferably, as Figures 11 to 13 shown, as a preferred embodiment of the low beam optical element of the present invention, the light incident part 1 and the light passing part 2 are integrally formed and are separately provided from the light emitting part 3. The light emitting part 3 includes a light emitting part light incident surface 31 and a light emitting part light emitting surface 32. The split setting of the low beam optical unit can increase the optical surface, so that more adjustable light distribution parameters are available during the light distribution process and the optical design is more flexible.

[0056] Furthermore, as Figure 14 shown, the low beam cut-off part 212 is arranged to enable the light emitted by the low beam optical element to form a low beam inflection point cut-off line. The light emitting part light incident surface 31 is arranged as a convex curved surface so that the light emitting part has the converging function of a common lens, and a low beam inflection point cut-off line with an inflection point is formed through the low beam cut-off part 212, so that the low beam optical element can be applied to a low beam module or a main low beam module. Arranging the low beam cut-off part on the low beam optical element makes full use of the space of the low beam optical element, can further reduce the volume of the vehicle headlight module, and realizes the miniaturization of the vehicle headlight module.

[0057] More specifically, as Figure 1 and Figure 11 shown, as a preferred embodiment of the low beam optical element of the present invention, the light incident part 1 is a condenser cup structure. The outer contour surface of the condenser cup structure is a curved surface with a gradually increasing diameter from back to front. The condensing surface for reflecting light can be a plane or a curved surface. The light incident part 1 can be a solid condenser cup structure or a condenser cup structure with a concave cavity.

[0058] Preferably, the dimension of the light-emitting surface 213 of the III region in the up-and-down direction is 0.8 mm - 1.2 mm. In order to ensure that the light pattern formed in the III region has a sufficient irradiation range in the up-and-down direction, the dimension of the light-emitting surface 213 of the III region in the up-and-down direction can be further preferably 1 mm. At this time, the up-and-down divergence angle of the light pattern in the III region is about 10°, which can meet the requirements of regulations for realizing the light pattern in the III region.

[0059] Specifically, the dimming structure 211 includes a plurality of dimming units 2111 arranged side by side horizontally. The dimming unit includes a curved-surface dimming unit, a flat-surface dimming unit, a bump dimming unit, a stripe dimming unit, and a pattern dimming unit, and the dimming structure 211 includes one or more of the curved-surface dimming unit, the flat-surface dimming unit, the bump dimming unit, the stripe dimming unit, and the pattern dimming unit. The combination form of the dimming units 2111 in the dimming structure 211 can be specially designed according to the lighting effect to be achieved, so as to precisely control the light pattern in the III region. The measurement points in the light pattern in the III region can use different dimming units 2111 to process the corresponding light rays within the range required by regulations. As a structural form, as Figure 4 shown, the dimming units 2111 on the dimming structure 211 are all curved-surface dimming units to form a light pattern in the III region as shown in Figure 5 ; if the brightness of the B50L measurement point in the B' area in the above structural form does not meet the requirements of regulations, as another structural form, the light-emitting area corresponding to this measurement point can be found, that is, the B area in Figure 7 , and the dimming unit 2111 here can be selected as a flat-surface dimming unit. Since the flat-surface dimming unit does not converge light rays, so as shown in Figure 6 and Figure 7 shown, in the finally formed light pattern in the III region, a locally lower-brightness area will be formed at the B50L measurement point to meet the requirements of regulations for the B50L measurement point, thereby being able to prevent glare to the drivers on oncoming vehicles or pedestrians on the road and improving the safety of night driving. It should be specially noted that the position of the B50L light-emitting area corresponding to the B50L measurement point in the light pattern in the III region formed by the entire headlight module is different in each low-beam optical unit, so corresponding designs need to be carried out for each low-beam optical unit. Similar methods can also be used to bring other measurement points that need to reduce brightness, such as the HV point, etc. within the range required by regulations; in addition, the bump dimming unit, the stripe dimming unit, and the pattern dimming unit all achieve reducing the brightness of local areas in the light pattern in the III region by diverging light rays to the surroundings.

[0060] Furthermore, as shown in Figure 8 and Figure 9As shown, as an embodiment of the vehicle headlight module of the present invention, it includes a light source 4 and a low-beam optical element of any one of the above low-beam optical element technical solutions. The light source 4 corresponds to the light incident portions 1 of each low-beam optical unit one by one. More preferably, the light emission direction of each light source 4 should be consistent with the length extension direction of the light passing portion 2 of the low-beam optical element corresponding to the light source 4, so as to be able to form an ultra-wide III-zone light pattern with a width of -45° to 35° as shown in Figure 10 . It should be noted that the left-right asymmetry of the III-zone light pattern is caused by the overall bending of the light emitting surface of the light emitting portions 3 of multiple integrated low-beam optical units to one side. Combining Figure 8 and Figure 9 shown, if the light emitting surface of the integrated light emitting portion 3 bends to the left, the light can be refracted to the left side to form a III-zone light pattern biased to the left as shown in Figure 10 . The design of bending the light emitting surface to the left is suitable for application on the left headlight. On this basis, it is preferable to bend the light emitting surface to the right on the right headlight, so that the irradiation width of the III-zone light pattern formed by superimposing the left and right headlights is wider; in addition, the light source 4 can preferably be a light source such as an LED light source or a laser light source, which has a small volume, high brightness and long service life, so that the headlight module has a small volume and a long service life.

[0061] Furthermore, for the vehicle lighting device provided in the third aspect of the present invention, since it has the headlight module described in any one of the above technical solutions, its structure is simple, its volume is small, it is easy to install, and it can accurately control the brightness levels of different regions within the III-zone light pattern, avoiding glare to the drivers on oncoming vehicles or pedestrians on the road, and can greatly improve the safety of night driving. Similarly, for the vehicle provided in the fourth aspect of the present invention, since it has the vehicle lighting device described in any one of the above technical solutions, the vehicle has an ultra-wide III-zone light pattern, which can expand the driver's field of vision and improve the safety of night driving.

[0062] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including any suitable combination of each specific technical feature. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. A low beam optical element, characterized in that, it includes a plurality of juxtaposed low beam optical units. Along the light emission direction, each low beam optical unit is successively provided with a light incident part (1), a light passing part (2) and a light emitting part (3). The light emitting parts (3) on each low beam optical unit are connected as a whole; a groove structure (21) extending along the width direction of the light passing part (2) is provided at the lower part of the light passing part (2) or at the lower part of the connection part between the light passing part (2) and the light incident part (1). The groove structure (21) includes two side surfaces and a top surface. On one of the two side surfaces close to the light incident part (1), it is formed as a light emission surface (213) of Zone III. On one of the two side surfaces far from the light incident part (1), it is formed as a light incident surface (214) of Zone III. The connection part between the top surface and the light incident surface (214) of Zone III is formed as a low beam cut-off part (212). At least one of the light emission surface (213) of Zone III and the light incident surface (214) of Zone III is provided with a light adjustment structure (211). The light emitted from the light incident part (1) to the light emission surface (213) of Zone III is emitted from the light emission surface (213) of Zone III to the light incident surface (214) of Zone III, so as to be able to enter the light passing part (2) through the light incident surface (214) of Zone III, and be able to be guided to the light emitting part (3) through the light passing part (2) and emitted, for forming the light pattern of Zone III.

2. The low beam optical element according to claim 1, characterized in that, the light emission surfaces of the plurality of light emitting parts (3) connected as a whole are set as smooth curved surfaces.

3. The low beam optical element according to claim 2, characterized in that, the light incident part (1), the light passing part (2) and the light emitting part (3) are integrally formed.

4. The low beam optical element according to claim 3, characterized in that, the plurality of low beam optical units are integrally formed.

5. The low beam optical element according to claim 2, characterized in that, the light incident part (1) and the light passing part (2) are integrally formed and are separately arranged from the light emitting part (3). The light emitting part (3) includes a light incident surface (31) of the light emitting part and a light emission surface (32) of the light emitting part.

6. The low beam optical element according to claim 5, characterized in that, the low beam cut-off part (212) is set to enable the light emitted by the low beam optical element to form a low beam inflection point cut-off line, and the light incident surface (31) of the light emitting part is a convex curved surface.

7. The low beam optical element according to any one of claims 1 to 6, characterized in that, the light incident part (1) is a condenser cup structure.

8. The low beam optical element according to any one of claims 1 to 6, characterized in that, the size of the light emission surface (213) of Zone III in the up-down direction is 0.8 mm - 1.2 mm.

9. The low beam optical element according to any one of claims 1 to 6, characterized in that, The dimming structure (211) includes a plurality of dimming units (2111) arranged horizontally side by side. The dimming units include curved surface dimming units, flat surface dimming units, bump dimming units, stripe dimming units, and pattern dimming units, and the dimming structure (211) includes one or more of the curved surface dimming units, flat surface dimming units, bump dimming units, stripe dimming units, and pattern dimming units.

10. A vehicle headlight module, characterized in that it includes a light source (4) and the low beam optical element according to any one of claims 1 to 9, and the light source (4) corresponds to the light incident part (1) of each of the low beam optical units one by one.

11. A vehicle lighting device, characterized in that it includes the vehicle headlight module described in claim 10.

12. A vehicle, characterized in that it includes the vehicle lighting device according to claim 11.

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