Vehicle Lighting Optical System, Vehicle Lamp Module, Vehicle Lamp and Vehicle

Abstract

The present invention relates to vehicle lamps, and discloses an optical system for vehicle lamps, which includes a lighting unit or a lighting unit group having a plurality of lighting units. A light-emitting surface (3) is provided in front of the lighting unit. The lighting unit includes a light-incident part and a light-guiding structure. The light-incident part is configured to converge the incident light and emit it to the light-guiding structure. The light-guiding structure includes a first reflecting surface and a second reflecting surface. A part of the light converged by the light-incident part is incident on the first reflecting surface, and after being reflected by the first reflecting surface, it can be reflected by the second reflecting surface together with the other part of the light converged by the light-incident part. The light emitted by the second reflecting surface can form an intermediate light pattern (a) after projection, and the light forming the intermediate light pattern (a) can be emitted through the light-emitting surface (3) to form a lighting light pattern (b). The light distributions of the intermediate light pattern (a) and the lighting light pattern (b) are consistent. In addition, the present invention also discloses a vehicle lamp module, a vehicle lamp and a vehicle. The present invention can make the shape of the light-emitting window of the vehicle lamp more diverse.

Description

Technical Field

[0001] The present invention relates to vehicle lights, and specifically, to a vehicle lighting optical system. In addition, the present invention also relates to a vehicle light module, a vehicle light, and a vehicle. Background Art

[0002] Currently, the illumination implementation methods for high and low beams mainly include two types: lens type and reflector type, that is, the vehicle lighting is formed by a combination of a reflector and a lens or solely by a reflector. The light exit window of the high and low beam modules in the prior art presents the style of a round lens or a square lens, and the size of this light exit window is limited by the sizes of the reflector and the lens. The vertical opening size of the light exit window is very large. With the continuous improvement of the automotive styling requirements, people hope that the vertical opening size of the vehicle light exit window is smaller and the styling is more diverse. For example, the light exit window has a narrow and long shape with more diverse lines.

[0003] In addition, the vehicle lights located on the front side of the vehicle include not only the low beam and high beam lights for realizing high and low beam illumination, but also signal lights related to vehicle safety such as position lights, turn signals, and daytime running lights. The signal lights in the prior art are usually arranged independently of the high and low beam modules, thus increasing the space volume occupied by the vehicle lights. Summary of the Invention

[0004] The first technical problem to be solved by the first aspect of the present invention is to provide a vehicle lighting optical system that can make the styling of the light exit window of the vehicle light more diverse.

[0005] The second technical problem to be solved by the second aspect of the present invention is to provide a vehicle light module that can realize a diversified design of the styling of the light exit window of the vehicle light.

[0006] The third technical problem to be solved by the third aspect of the present invention is to provide a vehicle light that can realize a diversified design of the styling of the light exit window.

[0007] The fourth technical problem to be solved by the fourth aspect of the present invention is to provide a vehicle that can realize a diversified design of the styling.

[0008] To solve the above technical problems, a first aspect of the present invention provides a vehicle lighting optical system, including a lighting unit or a lighting unit group having a plurality of the lighting units. An exit surface is provided in front of the lighting unit. The lighting unit includes a light incident portion and a light guiding structure. The light incident portion is configured to converge the incident light and emit it to the light guiding structure. The light guiding structure includes a first reflecting surface and a second reflecting surface. A part of the light converged by the light incident portion is incident on the first reflecting surface. After being reflected by the first reflecting surface, it can be reflected by the second reflecting surface together with another part of the light converged by the light incident portion. The exit light of the second reflecting surface of the lighting unit or the lighting unit group can form an intermediate light pattern after being projected. The light forming the intermediate light pattern can be emitted through the exit surface to form a lighting light pattern, and the light distributions of the intermediate light pattern and the lighting light pattern are consistent.

[0009] Preferably, the exit surface is a smooth curved surface, and its longitudinal section is a straight line extending in the up and down direction.

[0010] Preferably, the light incident portion is a semi-condensing cup structure. Its outer contour surface includes a plane and a curved surface with a gradually increasing diameter from the end far from the light guiding structure to the end close to the light guiding structure. The curved surface forms the reflecting surface of the light incident portion. A concave cavity is provided at the end of the light incident portion far from the light guiding structure. The side wall of the concave cavity forms the second light incident surface of the light incident portion. A convex portion is provided on the side of the concave cavity close to the light guiding structure. The convex portion forms the first light incident surface of the light incident portion.

[0011] Preferably, the lighting unit is a main low beam unit, or an auxiliary low beam unit or a high beam unit. The lighting unit group includes a plurality of identical lighting units, or includes a main low beam unit and an auxiliary low beam unit. The plurality of lighting units in the lighting unit group are arranged at intervals along the length direction of the exit surface.

[0012] Preferably, the light incident portion of the auxiliary low beam unit is an auxiliary low beam light incident portion. The first reflecting surface of the light guiding structure of the auxiliary low beam unit is an auxiliary low beam first reflecting surface, and the second reflecting surface is an auxiliary low beam second reflecting surface. A part of the light converged by the auxiliary low beam light incident portion is incident on the auxiliary low beam first reflecting surface. The auxiliary low beam first reflecting surface can reflect the incident light to the auxiliary low beam second reflecting surface. Another part of the light converged by the auxiliary low beam light incident portion is directly incident on the auxiliary low beam second reflecting surface. The auxiliary low beam second reflecting surface can reflect the incident light to form an auxiliary low beam intermediate light pattern and reflect the light forming the auxiliary low beam intermediate light pattern to the exit surface. After being projected through the exit surface, an auxiliary low beam lighting light pattern is formed. An auxiliary low beam cut-off line structure is formed at the edge of the auxiliary low beam first reflecting surface close to the auxiliary low beam second reflecting surface.

[0013] Preferably, the first auxiliary low beam reflecting surface and the second auxiliary low beam reflecting surface are sequentially arranged above the auxiliary low beam light incident part from bottom to top; the first auxiliary low beam reflecting surface is a plane, and the second auxiliary low beam reflecting surface is a curved surface.

[0014] Preferably, the auxiliary low beam unit and the light emitting surface are integrally formed.

[0015] Preferably, the light incident part of the main low beam unit is the main low beam light incident part, the first reflecting surface of the light guiding structure of the main low beam unit is the main low beam first reflecting surface, the second reflecting surface is the main low beam second reflecting surface, the light guiding structure of the main low beam unit further includes a main low beam first refracting surface and a main low beam second refracting surface, a part of the light converged by the main low beam light incident part is incident on the main low beam first reflecting surface, and the main low beam first reflecting surface can refract the incident light through the main low beam first refracting surface and the main low beam second refracting surface in sequence and then incident on the main low beam second reflecting surface, and another part of the light converged by the main low beam light incident part is directly refracted through the main low beam first refracting surface and the main low beam second refracting surface in sequence and then incident on the main low beam second reflecting surface; the main low beam second reflecting surface can reflect the incident light to the light emitting surface; a main low beam cut-off line structure is formed at the edge of the main low beam first reflecting surface close to the main low beam first refracting surface.

[0016] Preferably, the main low beam first reflecting surface, the main low beam first refracting surface, the main low beam second refracting surface and the main low beam second reflecting surface are sequentially arranged above the main low beam light incident part from bottom to top; the main low beam first reflecting surface is a plane, the main low beam first refracting surface is a curved surface protruding upward, the main low beam second refracting surface is a curved surface protruding downward, the main low beam second reflecting surface is a plane or a curved surface. Wherein, when the main low beam second reflecting surface is a plane, the main low beam second refracting surface can refract the incident light to form a light pattern consistent with the light pattern of the main low beam illumination light, and project it through the main low beam second reflecting surface to form the main low beam intermediate light pattern; when the main low beam second reflecting surface is a curved surface, the main low beam second reflecting surface can reflect the incident light to form the main low beam intermediate light pattern, and reflect the light forming the main low beam intermediate light pattern to the light emitting surface, and project it through the light emitting surface to form the main low beam illumination light pattern.

[0017] Preferably, the main low beam second refracting surface and the main low beam second reflecting surface are integrally formed with the light emitting surface, and the main low beam light incident part, the main low beam first reflecting surface and the main low beam first refracting surface are integrally formed.

[0018] Preferably, the light incident part of the high beam unit is the high beam light incident part, the first reflecting surface of the light guiding structure of the high beam unit is the high beam first reflecting surface, the second reflecting surface is the high beam second reflecting surface, a part of the light converged by the high beam light incident part is projected onto the high beam first reflecting surface, the high beam first reflecting surface can reflect the incident light to the high beam second reflecting surface, and another part of the light converged by the high beam light incident part is directly projected onto the high beam second reflecting surface; the high beam second reflecting surface can reflect the incident light to form an intermediate high beam light pattern, and reflect the light forming the intermediate high beam light pattern to the light emitting surface, and after being projected by the light emitting surface, form a high beam illumination light pattern.

[0019] Preferably, the high beam unit and the light emitting surface are integrated.

[0020] Preferably, the vehicle lamp optical system further includes a signal lamp unit, the signal lamp unit is arranged behind the light emitting surface, the signal lamp unit includes a signal lamp light incident surface and a signal lamp reflecting surface, and the signal lamp reflecting surface can reflect the light incident from the signal lamp light incident surface to the light emitting surface.

[0021] Preferably, the signal lamp unit and the lighting unit are arranged in the up-down direction, and the signal lamp unit is integrated with the light emitting surface; the number of the signal lamp units is one or more, and when the number of the signal lamp units is multiple, the multiple signal lamp units are arranged along the length direction of the light emitting surface.

[0022] Preferably, a light diffusion structure is provided on the signal lamp reflecting surface.

[0023] In a second aspect of the present invention, a vehicle lamp module is provided, including the vehicle lamp optical system described in the first aspect and a light source cooperating with the vehicle lamp optical system.

[0024] In a third aspect of the present invention, a vehicle lamp is provided, including the vehicle lamp module described in the second aspect.

[0025] In a fourth aspect of the present invention, a vehicle is provided, including the vehicle lamp described in the third aspect.

[0026] The lighting unit of the vehicle lamp optical system of the present invention is arranged such that the incident light forms an intermediate light pattern consistent with the light distribution of the illumination light pattern after passing through it, and the refraction of the light emitting surface arranged in front of the lighting unit does not change the light distribution forming the intermediate light pattern, and can form an illumination light pattern meeting the regulatory requirements, so that the light emitting surface can be designed into different shapes, and can meet the design requirements of a free-form surface for the shaping surface, thereby making the shape of the light emitting window of the vehicle lamp more diversified.

[0027] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0029] Figure 2 is a schematic structural diagram of the auxiliary low beam unit and the light-emitting surface in an embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of the auxiliary low beam unit in an embodiment of the present invention Figure 1 ;

[0031] Figure 4 is a schematic structural diagram of the auxiliary low beam unit in an embodiment of the present invention Figure 2 ;

[0032] Figure 5 is a schematic optical path diagram of the auxiliary low beam unit in an embodiment of the present invention;

[0033] Figure 6 is a schematic structural diagram of the main low beam unit and the light-emitting surface in an embodiment of the present invention;

[0034] Figure 7 is a schematic structural diagram of the main low beam unit in an embodiment of the present invention;

[0035] Figure 8 is a schematic optical path diagram of the main low beam unit in an embodiment of the present invention;

[0036] Figure 9 is a schematic structural diagram of another embodiment of the present invention Figure 1 ;

[0037] Figure 10 is a schematic structural diagram of another embodiment of the present invention Figure 2 ;

[0038] Figure 11 is Figure 10 an enlarged structural diagram of part A in;

[0039] Figure 12 is a schematic structural diagram of another embodiment of the present invention Figure 3 ;

[0040] Figure 13 is Figure 12 a sectional view taken along line B-B of;

[0041] Figure 14 is a schematic optical path diagram of the auxiliary low beam unit and the signal lamp unit in another embodiment of the present invention;

[0042] Figure 15 is Figure 12 a sectional view taken along line C-C of;

[0043] Figure 16 It is a schematic optical path diagram of the main low beam unit and the signal lamp unit in another embodiment of the present invention;

[0044] Figure 17 It is a front view of the light-emitting surface in another embodiment of the present invention;

[0045] Figure 18 It is a schematic structural diagram of the signal lamp unit (excluding the lighting unit) in another embodiment of the present invention;

[0046] Figure 19 It is a comparison diagram of the intermediate light pattern formed after the light is emitted from the lighting unit of the present invention and the lighting light pattern formed after passing through the light-emitting surface.

[0047] Description of reference numerals

[0048] 1 Main low beam unit 11 Main low beam light incident part

[0049] 111 First main low beam light incident surface 112 Second main low beam light incident surface

[0050] 113 Third main low beam reflecting surface 12 First main low beam reflecting surface

[0051] 121 Main low beam cut-off line structure 13 First main low beam refracting surface

[0052] 14 Second main low beam refracting surface 15 Second main low beam reflecting surface

[0053] 2 Auxiliary low beam unit 21 Auxiliary low beam light incident part

[0054] 211 First auxiliary low beam light incident surface 212 Second auxiliary low beam light incident surface

[0055] 213 Third auxiliary low beam reflecting surface 22 First auxiliary low beam reflecting surface

[0056] 221 Auxiliary low beam cut-off line structure 23 Second auxiliary low beam reflecting surface

[0057] 3 Light-emitting surface 31 Signal lamp area

[0058] 32 Low beam area 4 Lighting light source

[0059] 5 Signal lamp unit 51 Signal lamp light incident surface

[0060] 52 Signal lamp reflecting surface 521 Light diffusion structure

[0061] 6 Signal lamp light source 7 Virtual screen

[0062] 8 Light distribution screen a Intermediate light pattern

[0063] b Lighting light pattern Detailed implementation manners

[0064] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. is only for facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. Among them, "upper" refers to the direction close to the signal lamp unit and far from the lighting unit, and "lower" is the opposite direction of "upper"; "front" refers to the light-emitting direction of the lighting unit, and "rear" is the opposite direction of "front"; "left" and "right" are directions perpendicular to both the direction where "upper" and "lower" are located and the direction where "front" and "rear" are located.

[0065] It should be noted that in the following text, the "light distribution screen" refers to the screen for testing the light distribution performance of the lamp, which is a vertical screen set 25 m in front of the vehicle; the "virtual screen" is an imaginary light projection screen; the "light distribution" refers to the light intensity distribution, illuminance distribution and other light characteristics of the light projected on the light distribution screen or the virtual screen; "consistent light distribution" means that the light distributions are basically the same and can meet the requirements of vehicle lamp regulations within the allowable range; the "intermediate light pattern a" refers to the light pattern formed by the light projected on the virtual screen and capable of forming a specific shape; the "lighting light pattern b" refers to the light pattern formed by the light projected on the light distribution screen and capable of forming a specific shape.

[0066] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for illustrating and explaining the present invention and are not used to limit the present invention.

[0067] The present invention provides a vehicle lamp optical system, including a lighting unit or a lighting unit group having a plurality of lighting units. An exit surface 3 is provided in front of the lighting unit. The lighting unit includes a light incident portion and a light guiding structure. The light incident portion is configured to converge the incident light and exit it to the light guiding structure. The light guiding structure includes a first reflection surface and a second reflection surface. A part of the light converged by the light incident portion is incident on the first reflection surface. After being reflected by the first reflection surface, it can be reflected by the second reflection surface together with the other part of the light converged by the light incident portion. The exit light of the second reflection surface of the lighting unit or the lighting unit group can form an intermediate light pattern a after being projected. The light forming the intermediate light pattern a can exit through the exit surface 3 to form a lighting light pattern b, and the light distributions of the intermediate light pattern a and the lighting light pattern b are consistent.

[0068] In the vehicle lighting optical system of the present invention, the lighting unit is arranged such that the incident light forms an intermediate light pattern a after passing through it, and the light distribution of the intermediate light pattern a is consistent with that of the lighting light pattern b. The light forming the intermediate light pattern a can be projected onto the light exit surface 3, and the light of the intermediate light pattern a is emitted through the light exit surface 3. Although the light exit surface 3 refracts the light, the refraction of the light exit surface 3 does not change the light distribution of the intermediate light pattern a. As Figure 19 shown, if a virtual screen 7 is hypothetically arranged between the lighting unit and the light exit surface 3, the shape of the intermediate light pattern a formed by the emitted light of the lighting unit or the lighting unit group projected onto the virtual screen 7 is basically the same as the shape of the desired lighting light pattern b; the lighting light pattern b projected onto the light distribution screen 8 after being refracted by the light exit surface 3 later is still a lighting light pattern that meets the regulatory requirements, and the shapes of the two light patterns before and after are basically the same. Therefore, the refraction of the light exit surface 3 does not change the light distribution of the intermediate light pattern a. In the lighting module of the prior art, a light pattern with a specific shape cannot be formed before the light exit lens, that is, the light projected onto the virtual screen is a disordered light spot without a shape, and the light must be refracted by the light exit lens to form a lighting light pattern with a specific shape, which greatly limits the shape of the light exit lens. In summary, since the light exit surface 3 of the vehicle lighting optical system of the present invention has little influence on the light distribution of the intermediate light pattern a formed after the light is emitted from the lighting unit, the light exit surface 3 can be designed into different shapes, which can meet the design requirements of a free-form surface for the shaping surface. The present invention can realize a lighting module with a light exit surface 3 of different shapes according to the shaping requirements of the light exit surface 3 and in combination with the structure of the lighting unit, thereby making the shape of the light exit window of the vehicle lamp more diverse.

[0069] Preferably, the light exit surface 3 is a smooth surface, and its longitudinal section is a straight line extending in the up and down direction. The longitudinal section of the light exit surface 3 is set as a straight line extending in the up and down direction, which can reduce the refraction effect of the light exit surface 3 on the light in the up and down direction, so that the light forming the intermediate light pattern a only has a fine adjustment in the left and right directions after passing through the light exit surface 3 and does not change in the up and down direction, thereby further reducing the influence of the light exit surface 3 on the intermediate light pattern a.

[0070] More specifically, the light incident part is a semi-condensing cup structure, and its outer contour surface includes a flat surface and a curved surface with a gradually increasing diameter from the end far away from the light guiding structure to the end close to the light guiding structure. The curved surface forms the reflecting surface of the light incident part. A concave cavity is provided at the end of the light incident part far away from the light guiding structure, and the side wall of the concave cavity forms the second light incident surface of the light incident part. A protrusion is provided on the side of the concave cavity close to the light guiding structure, and the protrusion forms the first light incident surface of the light incident part. That is, the light incident part is enclosed by a flat surface, the reflecting surface of the light incident part, the first light incident surface of the light incident part, and the second light incident surface of the light incident part. The light entering the light incident part is divided into two parts and emitted. One part of the light is directly emitted through the first light incident surface and reaches the light guiding structure, and the other part of the light is emitted to the reflecting surface of the light incident part through the second light incident surface and is reflected by the reflecting surface to the light guiding structure. By providing the light incident part with a semi-condensing cup structure, compared with using an entire condensing cup structure, a better light condensing effect can be achieved in the front-back direction for the light, so that the up-down and front-back dimensions of the corresponding light guiding structure can be made very small, and further the up-down dimension of the light emitting surface 3 can be made smaller, thus realizing the small opening design of the light emitting window.

[0071] Specifically, the lighting unit is the main low beam unit 1, or the auxiliary low beam unit 2 or the high beam unit. The lighting unit group includes multiple identical lighting units, or includes the main low beam unit 1 and the auxiliary low beam unit 2. When there are multiple lighting units, the light emitting surface 3 can be set as a long strip-shaped free-form surface, and the multiple lighting units in the lighting unit group can be arranged at intervals along the length direction of the light emitting surface 3. Thus, the vehicle lamp optical system of the present invention can be used in a low beam or high beam lighting module to realize the low beam or high beam function. In addition, when realizing the high beam function, multiple high beam units and multiple lighting light sources 4 cooperating with the multiple high beam units can also be provided, and the lighting area of the vehicle lamp can be controlled by controlling the on and off of each lighting light source 4 to avoid the area where the oncoming vehicle is located and avoid the problem of glare, so as to achieve the intelligent anti-glare effect, that is, realize the high beam ADB function; and when realizing the low beam function, multiple low beam lighting units and multiple lighting light sources 4 cooperating with the multiple low beam lighting units can also be provided, that is, multiple main low beam units 1 can be set or multiple main low beam units 1 and multiple auxiliary low beam units 2 can be set, and the switch of the lighting light source 4 corresponding to the low beam cut-off line structure of each low beam lighting unit can be independently controlled to realize the horizontal movement of the low beam cut-off line, that is, the movement of the low beam inflection point, so as to realize the AFS follow-up steering lighting function. Therefore, the vehicle lamp optical system of the present invention can be applied to low beam lamps, high beam lamps, corner lamps, curve auxiliary lighting lamps or fog lamps, etc. according to different lighting requirements, and can also realize the AFS follow-up steering lighting function and the high beam ADB lighting function.

[0072] It should be noted that when there are multiple lighting units, the relative positions of the lighting units and the light-emitting surface 3 need to be determined according to the bending direction of the light-emitting surface 3, so as to ensure that the refraction of the emitted light of each lighting unit by the light-emitting surface 3 does not affect the light distribution of the middle light pattern a, so that the shape of the lighting light pattern b formed after being emitted by the light-emitting surface 3 is basically the same as the shape of the middle light pattern a, and can be emitted forward, meeting the requirements of vehicle lamp regulations, and can be projected in front of the vehicle for lighting. For example, when the light-emitting surface 3 is bent forward as shown in Figure 1 and has a small bending degree, the arrangement trend of multiple lighting units can be consistent with the extension trend of the light-emitting surface 3. When the light-emitting surface 3 is not bent forward or has a large bending degree, the arrangement trend of multiple lighting units cannot be consistent with the extension trend of the light-emitting surface 3, and it needs to be adaptively adjusted according to the refraction degree of the light-emitting surface 3 on the light.

[0073] As a specific implementation manner, as shown in Figures 1 to 8 , when the vehicle lamp optical system of the present invention is used for a low beam module, the vehicle lamp optical system includes a lighting unit group, and the lighting unit group includes at least one main low beam unit 1 and multiple auxiliary low beam units 2. The emitted light of the main low beam unit 1 is suitable for forming a main low beam middle light pattern, and the emitted light of the auxiliary low beam units 2 is suitable for forming an auxiliary low beam middle light pattern. The light forming the main low beam middle light pattern and the light forming the auxiliary low beam middle light pattern are projected through the light-emitting surface 3 to form a main low beam lighting light pattern and an auxiliary low beam lighting light pattern. The main low beam lighting light pattern and the auxiliary low beam lighting light pattern are superimposed to form a complete low beam lighting light pattern, and the light forming the low beam lighting light pattern is projected in front of the vehicle for lighting.

[0074] Specifically, as shown in Figures 2 to 4 , the light-incident part of the auxiliary low beam unit 2 is an auxiliary low beam light-incident part 21. The auxiliary low beam light-incident part 21 includes an auxiliary low beam first light-incident surface 211, an auxiliary low beam second light-incident surface 212, and an auxiliary low beam third reflecting surface 213. The first reflecting surface of the light-guiding structure of the auxiliary low beam unit 2 is an auxiliary low beam first reflecting surface 22, and the second reflecting surface is an auxiliary low beam second reflecting surface 23. A part of the light converged by the auxiliary low beam light-incident part 21 is incident on the auxiliary low beam first reflecting surface 22, and the auxiliary low beam first reflecting surface 22 can reflect the incident light to the auxiliary low beam second reflecting surface 23. Another part of the light converged by the auxiliary low beam light-incident part 21 is directly incident on the auxiliary low beam second reflecting surface 23. The auxiliary low beam second reflecting surface 23 can reflect the incident light to form an auxiliary low beam middle light pattern, and reflect the light forming the auxiliary low beam middle light pattern to the light-emitting surface 3, and form an auxiliary low beam lighting light pattern after being projected by the light-emitting surface 3.

[0075] In this embodiment, by providing the auxiliary low beam first reflecting surface 22 and the auxiliary low beam second reflecting surface 23, the transmission direction of light can be better adjusted, so that the expected light pattern can be better formed, and the structure can be made more compact. Among them, the auxiliary low beam first reflecting surface 22 and the auxiliary low beam second reflecting surface 23 are sequentially arranged above the auxiliary low beam light incident part 21 from bottom to top. Thus, the light converged by the auxiliary low beam light incident part 21 can be directly incident on the auxiliary low beam second reflecting surface 23 or reflected by the auxiliary low beam first reflecting surface 22 and then incident on the auxiliary low beam second reflecting surface 23, and then reflected by the auxiliary low beam second reflecting surface 23 to the light exit surface 3. The auxiliary low beam first reflecting surface 22 is a plane, which can better control the light exit direction and ensure that more light is incident on the auxiliary low beam second reflecting surface 23. The auxiliary low beam second reflecting surface 23 is a curved surface, so that the incident light can form an auxiliary low beam intermediate light pattern after being reflected by the auxiliary low beam second reflecting surface 23.

[0076] Specifically, an auxiliary low beam cut-off line structure 221 for forming an auxiliary low beam cut-off line is formed at the edge of the auxiliary low beam first reflecting surface 22 close to the auxiliary low beam second reflecting surface 23. Since the auxiliary low beam cut-off line is a horizontal line and has no inflection point, there is no need to provide a secondary optical part with a single focus corresponding thereto, that is, there is no need to provide a secondary light incident surface protruding toward the auxiliary low beam first reflecting surface 22. Therefore, for the convenience of installation of the vehicle lamp optical system and to make the structure more compact, the auxiliary low beam unit 2 and the light exit surface 3 are preferably formed as an integral body, which can form an integral light guide member. At this time, as Figure 13 shown, the auxiliary low beam first reflecting surface 22 is integrally connected with the plane of the auxiliary low beam light incident part 21. The auxiliary low beam first reflecting surface 22 is preferably extended upward from the plane of the auxiliary low beam light incident part 21 to make the structure more compact; and, a corner is provided at the upper end of the auxiliary low beam first reflecting surface 22 so that the auxiliary low beam cut-off line structure 221 is formed at the corner. Of course, the auxiliary low beam unit 2 and the light exit surface 3 can also be provided independently. At this time, the auxiliary low beam first reflecting surface 22 can be formed by providing a light shielding plate, and the auxiliary low beam second reflecting surface 23 can be formed by providing a reflecting mirror. The auxiliary low beam first reflecting surface 22 and the auxiliary low beam second reflecting surface 23 can also be reflecting surfaces formed by other reflection structures.

[0077] In this embodiment, as Figure 5As shown in the figure, a part of the light converged by the auxiliary low beam light incident part 21 is projected onto the first auxiliary low beam reflecting surface 22, and is reflected by the first auxiliary low beam reflecting surface 22 to the second auxiliary low beam reflecting surface 23. Another part is projected onto the auxiliary low beam cut-off line structure 221 on the edge of the first auxiliary low beam reflecting surface 22, and after passing through the auxiliary low beam cut-off line structure 221, it is projected onto the second auxiliary low beam reflecting surface 23. Still another part is directly projected onto the second auxiliary low beam reflecting surface 23. The second auxiliary low beam reflecting surface 23 reflects the incident light to form an auxiliary low beam intermediate light pattern with an auxiliary low beam cut-off line, and reflects the light forming the auxiliary low beam intermediate light pattern to the light emitting surface 3. After being projected by the light emitting surface 3, an auxiliary low beam illumination light pattern with an auxiliary low beam cut-off line is formed.

[0078] Specifically, as Figure 6 and Figure 7 shown, the light incident part of the main low beam unit 1 is the main low beam light incident part 11. The main low beam light incident part 11 includes a first main low beam light incident surface 111, a second main low beam light incident surface 112, and a third main low beam reflecting surface 113. The first reflecting surface of the light guiding structure of the main low beam unit 1 is the first main low beam reflecting surface 12, and the second reflecting surface is the second main low beam reflecting surface 15. The light guiding structure of the main low beam unit 1 further includes a first main low beam refracting surface 13 and a second main low beam refracting surface 14. A part of the light converged by the main low beam light incident part 11 is projected onto the first main low beam reflecting surface 12. The first main low beam reflecting surface 12 can refract the incident light through the first main low beam refracting surface 13 and the second main low beam refracting surface 14 in sequence and then project it onto the second main low beam reflecting surface 15. Another part of the light converged by the main low beam light incident part 11 is directly refracted through the first main low beam refracting surface 13 and the second main low beam refracting surface 14 in sequence and then projected onto the second main low beam reflecting surface 15. The second main low beam reflecting surface 15 can reflect the incident light to the light emitting surface 3.

[0079] In this embodiment, by providing the first main low beam reflecting surface 12 and the second main low beam reflecting surface 15, the transmission direction of the light can be better adjusted, so that the expected light pattern can be better formed, and the structure can be made more compact. Among them, the first main low beam reflecting surface 12, the first main low beam refracting surface 13, the second main low beam refracting surface 14, and the second main low beam reflecting surface 15 are sequentially arranged above the main low beam light incident part 11 from bottom to top. Thus, the light converged by the main low beam light incident part 11 can be directly or reflected by the first main low beam reflecting surface 12 and then refracted through the first main low beam refracting surface 13 and the second main low beam refracting surface 14 in sequence to the second main low beam reflecting surface 15, and be reflected by the second main low beam reflecting surface 15 to the light emitting surface 3. Preferably, the first main low beam reflecting surface 12 is a plane, the first main low beam refracting surface 13 is a curved surface protruding upward, the second main low beam refracting surface 14 is a curved surface protruding downward, and the second main low beam reflecting surface 15 is a plane.

[0080] Specifically, a main low-beam cut-off line structure 121 for forming a main low-beam cut-off line is formed at the edge of the main low-beam first reflection surface 12 close to the main low-beam first refraction surface 13. Since the main low-beam cut-off line has an inflection point, a secondary light incident surface protruding towards the main low-beam first reflection surface 12, that is, the main low-beam second refraction surface 14, needs to be provided. The main low-beam second refraction surface 14 and the main low-beam second reflection surface 15 together form a secondary optical part with a single focus. Correspondingly, a main low-beam first refraction surface 13 also needs to be provided to form a primary light exit surface. The main low-beam first refraction surface 13, the main low-beam first reflection surface 12, and the main low-beam light incident part 11 together form a primary optical part of the vehicle lamp optical system. Therefore, when the main low-beam unit 1 and the light exit surface 3 are formed as a whole, the main low-beam second refraction surface 14, the main low-beam second reflection surface 15, and the light exit surface 3 are preferably formed as a whole to form an integral secondary light guide member, and the main low-beam light incident part 11, the main low-beam first reflection surface 12, and the main low-beam first refraction surface 13 are preferably formed as a whole to form an integral primary light guide member. At the same time, when the main low-beam unit 1 is matched with the auxiliary low-beam unit 2, it is convenient to adjust the relative position between the main low-beam illumination light pattern and the auxiliary low-beam illumination light pattern, that is, convenient for light adjustment. Among them, as Figure 15 shown, when the main low-beam light incident part 11, the main low-beam first reflection surface 12, and the main low-beam first refraction surface 13 are connected as a whole, the main low-beam first reflection surface 12 is connected to the plane of the main low-beam light incident part 11. The main low-beam first reflection surface 12 is preferably extended upward from the plane of the main low-beam light incident part 11, making the structure more compact; and a corner is provided at the upper end of the main low-beam first reflection surface 12 so that the main low-beam cut-off line structure 121 is formed at the corner. Of course, the main low-beam unit 1 and the light exit surface 3 can also be separately and independently provided. At this time, the main low-beam first reflection surface 12 can be formed by providing a light shielding plate, and the main low-beam second reflection surface 15 can be formed by providing a reflecting mirror. The main low-beam first refraction surface 13 and the main low-beam second refraction surface 14 can select appropriate refraction structures according to the actual light distribution settings. For example, the main low-beam first refraction surface 13 can be formed by providing a plano-convex lens, and the main low-beam second refraction surface 14 can be formed by providing a convex-plano lens.

[0081] In this embodiment, as Figure 8As shown in the figure, a part of the light converged by the main low beam light incident part 11 is projected onto the main low beam first reflecting surface 12, reflected by the main low beam first reflecting surface 12 to the main low beam first refracting surface 13, refracted by the main low beam first refracting surface 13 and then projected onto the main low beam second refracting surface 14. Another part is projected onto the main low beam cut-off line structure 121 on the edge of the main low beam first reflecting surface 12, emitted after passing through the main low beam cut-off line structure 121, refracted by the main low beam first refracting surface 13 and then projected onto the main low beam second refracting surface 14. Still another part is directly refracted by the main low beam first refracting surface 13 and then projected onto the main low beam second refracting surface 14. The main low beam second refracting surface 14 refracts the incident light to form a light pattern consistent with the light distribution of the main low beam illumination light pattern, and forms a main low beam intermediate light pattern with a main low beam cut-off line after being projected by the main low beam second reflecting surface 15, and is reflected by the main low beam second reflecting surface 15 to the light emitting surface 3. Among them, since the main low beam second reflecting surface 15 is a plane, it only plays the role of bending the optical path and does not participate in light distribution. However, since the outgoing direction of the outgoing light of the main low beam second refracting surface 14 is upward, to make the outgoing light project forward, the light refracted by the main low beam second refracting surface 14 needs to be reflected by the main low beam second reflecting surface 15 before it can be projected out through the light emitting surface 3 for illumination. It can be matched with the auxiliary low beam unit 2, thereby reducing the front and rear dimensions of the vehicle lighting system. Since the main low beam second reflecting surface 15 does not participate in light distribution, the main low beam second reflecting surface 15 can also not be provided. The main low beam light incident part 11, the main low beam first reflecting surface 12, the main low beam first refracting surface 13 and the main low beam second refracting surface 14 are arranged in sequence from back to front, so that the light refracted by the main low beam second refracting surface 14 can form the main low beam intermediate light pattern, and the light forming the main low beam intermediate light pattern can directly be emitted through the light emitting surface 3 to form the main low beam illumination light pattern. In addition, the main low beam second reflecting surface 15 can also be a curved surface. At this time, the main low beam second reflecting surface 15 participates in light distribution. The light refracted by the main low beam second refracting surface 14 is projected onto the main low beam second reflecting surface 15. At this time, the light refracted by the main low beam second refracting surface 14 still cannot form a light pattern with a specific shape, let alone a light pattern consistent with the light distribution of the main low beam illumination light pattern. It needs to be reflected by the main low beam second reflecting surface 15 to form the main low beam intermediate light pattern, and then form the main low beam illumination light pattern after being projected by the light emitting surface 3.

[0082] When the vehicle lighting optical system of the present invention is used in the high beam module, the vehicle lighting optical system of the present invention includes a high beam unit. Specifically, the light incident part of the high beam unit is the high beam light incident part, and the high beam light incident part includes a first high beam light incident surface, a second high beam light incident surface, and a third high beam reflection surface. The first reflection surface of the light guiding structure of the high beam unit is the first high beam reflection surface, and the second reflection surface is the second high beam reflection surface. A part of the light converged by the high beam light incident part is incident on the first high beam reflection surface, and the first high beam reflection surface can reflect the incident light to the second high beam reflection surface. Another part of the light converged by the high beam light incident part is directly incident on the second high beam reflection surface. The second high beam reflection surface can reflect the incident light to form an intermediate high beam light pattern, and reflect the light forming the intermediate high beam light pattern to the light exit surface 3, and project it through the light exit surface 3 to form a high beam illumination light pattern. Among them, the high beam light incident part, the first high beam reflection surface, and the second high beam reflection surface are arranged in sequence in the up-down direction. The first high beam reflection surface is a plane, and the second high beam reflection surface is a curved surface. Similarly, the high beam unit and the light exit surface 3 are preferably formed as an integral body to form an integral light guiding member. Of course, the high beam unit and the light exit surface 3 can also be provided independently. At this time, the first high beam reflection surface can be formed by setting a light shielding plate, and the second high beam reflection surface can be formed by setting a reflector. The first high beam reflection surface and the second high beam reflection surface can also be reflection surfaces formed by other reflection structures. In addition, the above-mentioned high beam unit can be a main high beam unit and an auxiliary high beam unit with the same structure. The main high beam unit is suitable for forming a main intermediate high beam light pattern, and the auxiliary high beam unit is suitable for forming an auxiliary intermediate high beam light pattern. The light forming the main intermediate high beam light pattern and the light forming the auxiliary intermediate high beam light pattern are projected through the light exit surface 3 to form a main high beam illumination light pattern and an auxiliary high beam illumination light pattern. The main high beam illumination light pattern and the auxiliary high beam illumination light pattern are superimposed to form a complete high beam illumination light pattern, and the light forming the high beam illumination light pattern is projected in front of the vehicle for illumination.

[0083] As another embodiment, the vehicle lighting optical system further includes a signal lamp unit 5. The signal lamp unit 5 is arranged behind the light exit surface 3. The signal lamp unit 5 includes a signal lamp light incident surface 51 and a signal lamp reflection surface 52. The signal lamp reflection surface 52 can reflect the light incident from the signal lamp light incident surface 51 to the light exit surface 3, and project it through the light exit surface 3 to realize the signal lamp function. The signal lamp functions that can be realized by the signal lamp unit 5 include functions such as daytime running lights, or front position lights or turn signals. Thus, by combining the signal lamp unit 5 and the lighting unit, the multiplexing of the signal lamp function and the lighting function can be realized, and there is no need to separately set a signal lamp independent of the vehicle lighting optical system, thereby greatly reducing the space volume occupied by the vehicle lamp and making the vehicle lamp more beautiful in shape. And the signal lamp unit 5 and the lighting unit share a light exit surface, so that the structure of the vehicle lighting optical system is more compact and the overall size is smaller.

[0084] Specifically, as Figures 9 to 16 shown, the vehicle lighting optical system includes a lighting unit group and a plurality of signal lamp units 5. The lighting unit group includes at least one main low beam unit 1 and a plurality of auxiliary low beam units 2. The main low beam second refracting surface 14, the main low beam second reflecting surface 15, the auxiliary low beam unit 2 and the signal lamp unit 5 are all integrally connected to the light emitting surface 3. The main low beam light incident portion 11, the main low beam first reflecting surface 12 and the main low beam first refracting surface 13 are integrally connected. As Figure 17 shown, the light emitting surface 3 is divided into two partial regions, a signal lamp region 31 located in the upper part and a low beam region 32 located in the lower part. Correspondingly, as Figure 13 and Figure 15 shown, the signal lamp unit 5 is located above the lighting unit group. The emitted light of the signal lamp unit 5 is emitted through the signal lamp region 31 of the light emitting surface 3 to realize the signal lamp function. The emitted light of the lighting unit group is emitted through the low beam region 32 of the light emitting surface 3 to realize low beam lighting. Of course, the up and down positions of the signal lamp region 31 and the low beam region 32 can also be swapped, that is, the low beam region 32 is located above the signal lamp region 31. Of course, the signal lamp region 31 and the low beam region 32 can also be arranged in the left - right direction, but it is necessary to ensure that the light emitted through the signal lamp region 31 and the light emitted through the low beam region 32 do not interfere with each other. Correspondingly, the relative positions of the lighting unit group and the signal lamp unit 5 can be adjusted according to the relative positions of the signal lamp region 31 and the low beam region 32, that is, the lighting unit group can be located above, to the left or to the right of the signal lamp unit 5. When the lighting unit group is located above the signal lamp unit 5, correspondingly, the light incident portion is arranged above the light guiding structure. In addition, from Figure 12 it can be seen that the light emitting surface 3 bends forward and has a small bending degree. Therefore, the arrangement trend of the multiple lighting units in the lighting unit group can be consistent with the extension trend of the light emitting surface 3. Correspondingly, the multiple signal lamp units 5 are arranged along the length direction of the light emitting surface 3, and their arrangement trend can also be consistent with the extension trend of the light emitting surface 3 to form a strip - shaped signal lamp effect matching the shaping surface. Among them, the multiple signal lamp units 5 can be arranged at intervals, that is, there is no connection between adjacent signal lamp units 5. Of course, the multiple signal lamp units 5 can also be arranged closely and are integrally connected between adjacent signal lamp units 5. Specifically, as Figure 9 , Figure 10 , Figure 12 and Figure 18 shown.

[0085] Preferably, a light diffusion structure 521 is provided on the signal lamp reflecting surface 52, which can diffuse the incident light and improve the uniformity of the lighting effect of the signal lamp unit 5. Specifically, as Figure 10 andFigure 11 As shown, the light diffusion structure 521 is in a grid shape. Of course, the light diffusion structure 521 can also be other structures capable of diffusing light. For example, the light diffusion structure 521 is in a stripe shape or a serrated shape.

[0086] In a second aspect of the present invention, a vehicle lamp module is provided, which includes the vehicle lamp optical system described in the first aspect and a light source cooperating with the vehicle lamp optical system. As a specific implementation manner, the vehicle lamp optical system includes a lighting unit group and a plurality of signal lamp units 5. The lighting unit group includes at least one main low beam unit 1 and a plurality of auxiliary low beam units 2. Correspondingly, the light source includes a lighting light source 4 cooperating with the main low beam unit 1 and the auxiliary low beam units 2, and a signal light source 6 cooperating with the signal lamp unit 5. Among them, as Figure 14 and Figure 16 shown, the lighting light source 4 is arranged relative to the first light incident surface and the second light incident surface of the light incident part, so that as much light as possible is incident on the two light incident surfaces, and the number of the lighting light sources 4 is consistent with the number of the lighting units. The number of the signal light sources 6 is consistent with the number of the signal lamp units 5, and the signal light sources 6 are arranged in one-to-one correspondence with the signal lamp light incident surfaces 51, so that the light emitted by the signal light sources 6 can enter the signal lamp light incident surfaces 51. By controlling the turning off, brightness and darkness of each signal light source 6, dynamic change functions of signal lamps such as breathing and running water lights can be realized.

[0087] By providing the vehicle lamp optical system, a diversified design of the light output window of the vehicle lamp can be realized.

[0088] In a third aspect of the present invention, a vehicle lamp is provided, which includes the vehicle lamp module described in the second aspect.

[0089] By providing the vehicle lamp module, the vehicle lamp can realize a diversified design of the light output window.

[0090] In a fourth aspect of the present invention, a vehicle is provided, which includes the vehicle lamp described in the third aspect.

[0091] By providing the vehicle lamp, the vehicle can realize a diversified design, which is beneficial to improving the overall visual effect and aesthetic degree of the vehicle body.

[0092] 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 to the specific details in the above embodiments. 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, and these simple modifications all belong to the protection scope of the present invention.

[0093] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination manners.

[0094] Furthermore, any combinations can be made among the various different embodiments of the present invention as long as they do not violate the idea of the present invention, and they should equally be regarded as the content disclosed by the present invention.

Claims

1. A vehicle lighting optical system, characterized in that, Comprising a lighting unit or a group of lighting units having a plurality of said lighting units, with a light-emitting surface (3) provided in front of the lighting unit, the light-emitting surface (3) being a smooth curved surface, the longitudinal section line of which is a straight line extending in the up-and-down direction. The lighting unit includes a light-incident part and a light-guiding structure. The light-incident part is arranged to converge the incident light and emit it to the light-guiding structure. The light-guiding structure includes a first reflecting surface and a second reflecting surface. A part of the light converged by the light-incident part is incident on the first reflecting surface, and after being reflected by the first reflecting surface, it can be reflected by the second reflecting surface together with the other part of the light converged by the light-incident part. The first reflecting surface is located below the second reflecting surface. The emitted light of the second reflecting surface of the lighting unit or the group of lighting units can form an intermediate light pattern (a) after projection, and the light forming the intermediate light pattern (a) can be emitted through the light-emitting surface (3) to form a lighting light pattern (b), and the light distributions of the intermediate light pattern (a) and the lighting light pattern (b) are consistent; The light-incident part is a semi-condensing cup structure, the outer contour surface of which includes a plane and a curved surface with a gradually increasing aperture from the end far from the light-guiding structure to the end close to the light-guiding structure. The curved surface forms the reflecting surface of the light-incident part. A concave cavity is provided at the end of the light-incident part far from the light-guiding structure, and the side wall of the concave cavity forms the second light-incident surface of the light-incident part. A protrusion is provided on the side of the concave cavity close to the light-guiding structure, and the protrusion forms the first light-incident surface of the light-incident part.

2. The vehicle lighting optical system according to claim 1, characterized in that, The lighting unit is a main low-beam unit (1), or an auxiliary low-beam unit (2) or a high-beam unit. The group of lighting units includes a plurality of identical said lighting units, or includes a main low-beam unit (1) and an auxiliary low-beam unit (2). The plurality of said lighting units in the group of lighting units are arranged at intervals along the length direction of the light-emitting surface (3).

3. The vehicle lighting optical system according to claim 2, wherein The light-incident part of the auxiliary low-beam unit (2) is an auxiliary low-beam light-incident part (21), the first reflecting surface of the light-guiding structure of the auxiliary low-beam unit (2) is an auxiliary low-beam first reflecting surface (22), and the second reflecting surface is an auxiliary low-beam second reflecting surface (23). A part of the light converged by the auxiliary low-beam light-incident part (21) is incident on the auxiliary low-beam first reflecting surface (22), and the auxiliary low-beam first reflecting surface (22) can reflect the incident light to the auxiliary low-beam second reflecting surface (23). Another part of the light converged by the auxiliary low-beam light-incident part (21) is directly incident on the auxiliary low-beam second reflecting surface (23); the auxiliary low-beam second reflecting surface (23) can reflect the incident light to form an auxiliary low-beam intermediate light pattern and reflect the light forming the auxiliary low-beam intermediate light pattern to the light-emitting surface (3), and after projection through the light-emitting surface (3), it forms an auxiliary low-beam lighting light pattern; an auxiliary low-beam cut-off line structure (221) is formed at the edge of the auxiliary low-beam first reflecting surface (22) close to the auxiliary low-beam second reflecting surface (23).

4. The vehicle lighting optical system according to claim 3, characterized in that, The auxiliary low beam first reflecting surface (22) and the auxiliary low beam second reflecting surface (23) are sequentially arranged above the auxiliary low beam light incident part (21) from bottom to top; the auxiliary low beam first reflecting surface (22) is a plane, and the auxiliary low beam second reflecting surface (23) is a curved surface.

5. The vehicle lighting optical system according to claim 3, characterized in that, The auxiliary low beam unit (2) and the light emitting surface (3) are formed as one body.

6. The vehicle lighting optical system according to claim 2, characterized in that, The light incident part of the main low beam unit (1) is the main low beam light incident part (11), the first reflecting surface of the light guiding structure of the main low beam unit (1) is the main low beam first reflecting surface (12), the second reflecting surface is the main low beam second reflecting surface (15), the light guiding structure of the main low beam unit (1) further includes a main low beam first refracting surface (13) and a main low beam second refracting surface (14). A part of the light converged by the main low beam light incident part (11) is incident on the main low beam first reflecting surface (12), and the main low beam first reflecting surface (12) can refract the incident light through the main low beam first refracting surface (13) and the main low beam second refracting surface (14) in sequence and then project it onto the main low beam second reflecting surface (15). Another part of the light converged by the main low beam light incident part (11) is directly refracted through the main low beam first refracting surface (13) and the main low beam second refracting surface (14) in sequence and then projected onto the main low beam second reflecting surface (15); the main low beam second reflecting surface (15) can reflect the incident light to the light emitting surface (3); a main low beam cut-off line structure (121) is formed at the edge of the main low beam first reflecting surface (12) close to the main low beam first refracting surface (13).

7. The vehicle lighting optical system according to claim 6, characterized in that, The main low beam first reflecting surface (12), the main low beam first refracting surface (13), the main low beam second refracting surface (14) and the main low beam second reflecting surface (15) are sequentially arranged above the main low beam light incident part (11) from bottom to top; the main low beam first reflecting surface (12) is a plane, the main low beam first refracting surface (13) is a curved surface protruding upward, the main low beam second refracting surface (14) is a curved surface protruding downward, and the main low beam second reflecting surface (15) is a plane or a curved surface, where When the main low beam second reflecting surface (15) is a plane, the main low beam second refracting surface (14) can refract the incident light to form a light pattern consistent with the light pattern of the main low beam illumination light, and project it through the main low beam second reflecting surface (15) to form a main low beam intermediate light pattern; when the main low beam second reflecting surface (15) is a curved surface, the main low beam second reflecting surface (15) can reflect the incident light to form the main low beam intermediate light pattern, and reflect the light forming the main low beam intermediate light pattern to the light emitting surface (3), and project it through the light emitting surface (3) to form the main low beam illumination light pattern.

8. The vehicle lighting optical system according to claim 6, characterized in that, The main low beam second refracting surface (14) and the main low beam second reflecting surface (15) are formed as one body with the light emitting surface (3), and the main low beam light incident part (11), the main low beam first reflecting surface (12) and the main low beam first refracting surface (13) are formed as one body.

9. The vehicle lighting optical system according to claim 2, characterized in that, The light incident part of the high beam unit is the high beam light incident part, the first reflection surface of the light guiding structure of the high beam unit is the high beam first reflection surface, the second reflection surface is the high beam second reflection surface. A part of the light converged by the high beam light incident part is incident on the high beam first reflection surface, and the high beam first reflection surface can reflect the incident light to the high beam second reflection surface. Another part of the light converged by the high beam light incident part is directly incident on the high beam second reflection surface; the high beam second reflection surface can reflect the incident light to form an intermediate high beam light pattern, and reflect the light forming the intermediate high beam light pattern to the light emitting surface (3), and after being projected by the light emitting surface (3), a high beam illumination light pattern is formed.

10. The vehicle lighting optical system according to claim 9, characterized in that, The high beam unit and the light emitting surface (3) are integrally formed.

11. The vehicle lighting optical system according to any one of claims 1 to 10, characterized in that, The vehicle lamp optical system further includes a signal lamp unit (5). The signal lamp unit (5) is arranged behind the light emitting surface (3). The signal lamp unit (5) includes a signal lamp light incident surface (51) and a signal lamp reflection surface (52). The signal lamp reflection surface (52) can reflect the light incident from the signal lamp light incident surface (51) to the light emitting surface (3).

12. The vehicle lighting optical system according to claim 11, characterized in that, The signal lamp unit (5) and the lighting unit are arranged in the up and down direction, and the signal lamp unit (5) is integrated with the light emitting surface (3); the number of the signal lamp units (5) is one or more. When the number of the signal lamp units (5) is multiple, the multiple signal lamp units (5) are arranged along the length direction of the light emitting surface (3).

13. The vehicle lighting optical system according to claim 11, characterized in that, A light diffusion structure (521) is provided on the signal lamp reflection surface (52).

14. A vehicle lamp module, characterized in that, It includes the vehicle lamp optical system according to any one of claims 1 to 13 and a light source cooperating with the vehicle lamp optical system.

15. A vehicle lamp, characterized in that, It includes the vehicle lamp module according to claim 14.

16. A vehicle, characterized in that, It includes the vehicle lamp according to claim 15.

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