Multifunctional signal light lens and vehicle light design method based on said lens

Abstract

The present invention relates to a multifunctional signal light lens for a vehicle, comprising a lens outer surface and a lens inner surface. The lens inner surface is a multifunctional lens group formed by splicing a central lens and a fan-shaped lens group, the fan-shaped lens group comprising first lens groups and second lens groups; the first lens groups and the second lens groups are alternately arranged around the central lens, and each consists of a plurality of teeth having different curvatures. The lens outer surface is a smooth plane, and is easy to process and convenient to clean. The inner surface is formed by the central lens and the lens groups consisting of different teeth according to a certain rule, thus reducing design complexity, and facilitating processing and manufacturing of molds. The angle and position of each tooth are designed to irradiate light emitted by a light source to places specified by a signal light regulation in a refraction or reflection mode, the combination of different lens groups enables a single lens to satisfy the requirements of a front position light, a rear position light and a side position light simultaneously, and the size of the lens is small, thus reducing the size of vehicle lights and improving the freedom in styling.

Description

Multi-functional signal lamp lens and vehicle lamp design method based on the lens TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile lamps, in particular to a multi-functional signal lamp lens for vehicles and a vehicle lamp design method based on the lens. BACKGROUND

[0002] The position lamps installed on vehicles in the market are divided into front position lamps (white light), rear position lamps (red light) and side position lamps (yellow light), which are all designed by optical structures of light sources + light distribution lenses. Since the light shapes and light intensities required by regulations are different, each position lamp is generally equipped with different optical lenses (the light distribution patterns on the lenses are different) to achieve the light distribution effects required by each function. Moreover, each position lamp only meets the requirements of regulations in one installation direction (horizontal or vertical), has low light efficiency, poor applicability, many parts and high mold investment cost. SUMMARY

[0003] In view of the above-mentioned deficiencies of the current signal lamp lens for vehicles, the present application provides a multi-functional signal lamp lens for vehicles, which can simplify the optical structure and improve the versatility.

[0004] To achieve the above-mentioned purposes, the embodiments of the present application adopt the following technical solutions:

[0005] A multi-functional signal lamp lens for vehicles comprises a lens outer surface and a lens inner surface, the lens outer surface is a smooth surface, and the lens inner surface is a multi-functional lens group, which is composed of a center lens and a fan-shaped lens group; the center lens is located in the center region of the lens inner surface, and the center point of the fan-shaped lens group coincides with the center point of the center lens; the fan-shaped lens group comprises a first lens group and a second lens group; the first lens group and the second lens group are arranged alternately and symmetrically around the center lens; the first lens group is composed of a plurality of first tooth patterns for forming a light shape; and the second lens group is composed of a plurality of second tooth patterns for supplementing brightness.

[0006] According to one aspect of the present application, the first tooth pattern comprises a first tooth, a second tooth and a third tooth;

[0007] The first tooth comprises a first arc surface and a second arc surface; the included angle between the first arc surface and the lens outer surface ranges from 141° to 146°, and the included angle between the second arc surface and the lens outer surface ranges from 65° to 61°;

[0008] The second tooth comprises a third arc surface and a fourth arc surface; the included angle between the third arc surface and the lens outer surface ranges from 131° to 135°, and the included angle between the fourth arc surface and the lens outer surface ranges from 55° to 51°;

[0009] The third tooth pattern comprises a fifth arc surface and a sixth arc surface; the fifth arc surface has an angle range of 90°-92° with the outer surface of the lens, and the sixth arc surface has an angle range of 75°-73° with the outer surface of the lens.

[0010] According to an aspect of the present application, the second type of tooth pattern comprises a fourth tooth pattern, a fifth tooth pattern and a sixth tooth pattern.

[0011] The fourth tooth pattern comprises a seventh arc surface and an eighth arc surface; the seventh arc surface has an angle range of 90°-92° with the outer surface of the lens, and the eighth arc surface has an angle range of 28°-34° with the outer surface of the lens.

[0012] The fifth tooth pattern comprises a ninth arc surface and a tenth arc surface; the ninth arc surface has an angle range of 90°-92° with the outer surface of the lens, and the tenth arc surface has an angle range of 62°-66° with the outer surface of the lens.

[0013] The sixth tooth pattern comprises an eleventh arc surface and a twelfth arc surface; the eleventh arc surface has an angle range of 90°-92° with the outer surface of the lens, and the twelfth arc surface has an angle range of 64°-69° with the outer surface of the lens.

[0014] According to an aspect of the present application, each of the first lens groups comprises a first tooth pattern, a second tooth pattern and a third tooth pattern.

[0015] According to an aspect of the present application, each of the second lens groups comprises a fourth tooth pattern, a fifth tooth pattern and a sixth tooth pattern.

[0016] A multifunctional vehicle signal lamp lens, the first lens groups and the second lens groups are both fan-shaped and the number of each is four; the first lens groups are crosswise symmetrically arranged around the center point of the center lens; the second lens groups are crosswise symmetrically arranged around the center point of the center lens.

[0017] According to an aspect of the present application, the top angle of the first lens ranges from 11° to 25°.

[0018] According to an aspect of the present application, when the multifunctional vehicle signal lamp lens is vertically installed, the first lens groups are used to refract the light emitted by the light source into a spatial solid angle of 20 degrees upward, 20 degrees downward, 85 degrees left and 85 degrees right relative to the center line of the signal lamp lens.

[0019] According to an aspect of the present application, the top angle of the second lens ranges from 40° to 55°.

[0020] According to one aspect of the present application, when the multifunctional vehicle signal lamp lens is vertically installed, the second lens group is used to refract the light emitted by the light source into a spatial solid angle of 22 degrees upward, 22 degrees downward, 22 degrees left and 22 degrees right relative to the center line of the signal lamp lens.

[0021] According to one aspect of the present application, the minimum thickness of the multifunctional vehicle signal lamp lens is 2-2.5 mm; the tooth height of the first type of tooth pattern and the second type of tooth pattern is not more than 50% of the thickness of the multifunctional vehicle signal lamp lens.

[0022] According to one aspect of the present application, the outer contour diameter of the multifunctional vehicle signal lamp lens is not more than 14.6 mm, and the focal length is not more than 4.5 mm.

[0023] A vehicle lamp design method, comprising the following steps:

[0024] Determining the number of multifunctional vehicle signal lamp lenses according to the type and shape of the vehicle lamp;

[0025] Arranging the positions of the multifunctional vehicle signal lamp lenses according to the shape of the vehicle lamp;

[0026] Designing the optical part frame of the vehicle lamp according to the positions of the multifunctional vehicle signal lamp lenses;

[0027] Designing the optical functional components on the optical part frame of the vehicle lamp except for the multifunctional vehicle signal lamp lenses.

[0028] According to one aspect of the present application, the multifunctional vehicle signal lamp lens is designed integrally with the optical part frame of the vehicle lamp.

[0029] According to one aspect of the present application, the multifunctional vehicle signal lamp lens is designed separately from the optical part frame of the vehicle lamp; the optical part frame of the vehicle lamp has a reserved fixed position according to the position of the multifunctional vehicle signal lamp lens.

[0030] According to one aspect of the present application, the multifunctional vehicle signal lamp lens and the fixed position are provided with corresponding limiting structures.

[0031] The advantages of the implementation of the present application are:

[0032] The outer surface of the multifunctional vehicle signal lamp lens is smooth and planar, easy to process and clean; the inner surface is composed of a first lens group and a second lens group which are composed of a center lens and different tooth patterns and are arranged according to a certain rule, thereby reducing the complexity of design and facilitating the processing and manufacturing of the mold; the angle and position of each tooth pattern are designed to irradiate the light emitted by the light source to the place specified by the signal lamp regulations in a refractive or reflective manner, the combination of different lens groups enables a single lens to meet the requirements of front position light, rear position light and side position light, thereby improving the application range of the signal lamp lens, reducing the number of parts in the signal lamp and reducing the mold development cost; the design reduces the thickness of the lens, reduces the volume of the vehicle lamp, improves the degree of freedom of the vehicle lamp modeling, speeds up the optical research and development cycle and facilitates the modular application. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0034] Fig. 1 is a perspective view of a multifunctional vehicle signal lamp lens according to the present application;

[0035] Fig. 2 is a schematic view of the inner surface of a multifunctional vehicle signal lamp lens according to the present application;

[0036] Fig. 3 is a sectional view along lines A-A and B-B in Fig. 2;

[0037] Fig. 4 is a sectional view along lines C-C and D-D in Fig. 2;

[0038] Fig. 5 is a schematic view of the included angle of the lens arc surface;

[0039] Fig. 6 is a light path diagram of the first lens group according to the present application;

[0040] Fig. 7 is a light path diagram of the second lens group according to the present application;

[0041] Fig. 8 is a front view of the lens array according to embodiment 2 of the present application;

[0042] Fig. 9 is a rear view of the lens array according to embodiment 2 of the present application;

[0043] Fig. 10 is a top view of the lens array according to embodiment 2 of the present application;

[0044] Fig. 11 is a side view of the lens array according to embodiment 2 of the present application.

[0045] Legend: 1, lens outer surface; 2, lens inner surface; 21, center lens; 22, first lens group; 221, first tooth pattern; 222, second tooth pattern; 223, third tooth pattern; 23, second lens group; 231, fourth tooth pattern; 232, fifth tooth pattern; 233, sixth tooth pattern. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and therefore are not used as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0047] Embodiment 1

[0048] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. 6, a multifunctional vehicle signal lamp lens includes a lens outer surface and a lens inner surface, the lens outer surface is a smooth surface, and the lens inner surface is a multifunctional lens group which is composed of a center lens and a fan-shaped lens group; the center lens is located in a central region of the lens inner surface, and the center point of the fan-shaped lens group coincides with the center point of the center lens; the fan-shaped lens group includes a first lens group and a second lens group; the first lens group and the second lens group are staggered and symmetrically arranged around the center lens; the first lens group is composed of a plurality of a first type of tooth patterns for forming a light shape; and the second lens group is composed of a plurality of a second type of tooth patterns for supplementing brightness.

[0049] The first type of tooth pattern includes a first tooth pattern, a second tooth pattern and a third tooth pattern;

[0050] The first tooth pattern includes a first arc surface and a second arc surface; the included angle between the first arc surface and the lens outer surface ranges from 141° to 146°, and the included angle between the second arc surface and the lens outer surface ranges from 65° to 61°;

[0051] The second tooth pattern includes a third arc surface and a fourth arc surface; the included angle between the third arc surface and the lens outer surface ranges from 131° to 135°, and the included angle between the fourth arc surface and the lens outer surface ranges from 55° to 51°;

[0052] The third tooth pattern includes a fifth arc surface and a sixth arc surface; the included angle between the fifth arc surface and the lens outer surface ranges from 90° to 92°, and the included angle between the sixth arc surface and the lens outer surface ranges from 75° to 73°.

[0053] The second type of tooth pattern includes a fourth tooth pattern, a fifth tooth pattern and a sixth tooth pattern;

[0054] The fourth tooth includes a seventh arc surface and an eighth arc surface; the seventh arc surface has an angle range of 90°-92° with the outer surface of the lens, and the eighth arc surface has an angle range of 28°-34° with the outer surface of the lens;

[0055] The fifth tooth includes a ninth arc surface and a tenth arc surface; the ninth arc surface has an angle range of 90°-92° with the outer surface of the lens, and the tenth arc surface has an angle range of 62°-66° with the outer surface of the lens;

[0056] The sixth tooth includes an eleventh arc surface and a twelfth arc surface; the eleventh arc surface has an angle range of 90°-92° with the outer surface of the lens, and the twelfth arc surface has an angle range of 64°-69° with the outer surface of the lens;

[0057] The angles of the arc surfaces with the outer surface of the lens are all the angles on the side of the opening facing the center of the lens (i.e. the inner side); the first arc surface, the third arc surface, the fifth arc surface, the seventh arc surface, the ninth arc surface and the eleventh arc surface are the arc surfaces facing the inner side of the lens; the second arc surface, the fourth arc surface, the sixth arc surface, the eighth arc surface, the tenth arc surface and the twelfth arc surface are the arc surfaces facing the outer side of the lens; as shown in FIG. 5, the angles of the third arc surface and the fourth arc surface of the second tooth with the outer surface of the lens are shown in the diagram; in the diagram, the reference numeral X represents the third arc surface, the reference numeral Y represents the fourth arc surface, the reference numeral α represents the angle of the third arc surface with the outer surface of the lens, and the reference numeral β represents the angle of the fourth arc surface with the outer surface of the lens.

[0058] Each first lens group includes a first tooth, a second tooth and a third tooth.

[0059] Each second lens group includes a fourth tooth, a fifth tooth and a sixth tooth.

[0060] The top angle of the first lens ranges from 11° to 25°; when the multifunctional vehicle signal lamp lens is vertically installed, the first lens group is used to refract the light emitted by the light source into a space solid angle of 20 degrees upward, 20 degrees downward, 85 degrees left and 85 degrees right relative to the center line of the signal lamp lens; as shown in FIG. 6, the light shape of the first lens group is shown in the diagram; as can be seen from the diagram, the light shape of the first lens group is relatively divergent, because from the functional point of view, the first lens is mainly responsible for meeting the requirements of regulations on light shape;

[0061] The top angle of the second lens ranges from 40° to 55°; when the multifunctional vehicle signal lamp lens is vertically installed, the second lens group is used to refract the light emitted by the light source into a space solid angle of 22 degrees upward, 22 degrees downward, 22 degrees left and 22 degrees right relative to the center line of the signal lamp lens; as shown in FIG. 7, the light shape of the second lens group is shown in the diagram; as can be seen from the diagram, the light shape of the second lens group is relatively concentrated, because from the functional point of view, the first lens is mainly used to supplement the brightness in the central region and avoid uneven brightness in the central region.

[0062] In practical application, the minimum thickness of the multifunctional vehicle signal lamp lens is 2-2.5 mm; the maximum tooth height of each tooth is not more than 50% of the overall thickness of the lens, which is beneficial to injection molding and reduces the use of materials, and the low thickness is beneficial to the transmission of light and the reduction of the overall size of the optical system; in this embodiment, the top angles of the third tooth, the fourth tooth, the fifth tooth and the sixth tooth are provided with a certain degree of chamfer, which prevents burrs from appearing at the sharp corner positions of the lens with too small size during the injection molding process, and also facilitates demolding.

[0063] In this embodiment, the outer contour diameter of the multifunctional vehicle signal lamp lens is not more than 14.6 mm, and the focal length is not more than 4.5 mm; the focal points of each tooth are located on the light source point, and the lens group composed of each tooth accurately refracts or reflects the light emitted by the light source to the light shape required by the signal lamp regulations, so that a single lens simultaneously meets the requirements of the front position lamp, the rear position lamp and the side position lamp. Due to the accurate design of the split arrangement of the two lens groups and the angles of each tooth, the brightness of the spliced light shape is uniform, without bright and dark areas, accurate control of the light emitted by the light source is achieved, and the utilization rate of light is improved.

[0064] The outer surface of the lens is a smooth plane, which is convenient for processing and manufacturing, and the surface is not easy to accumulate dirt and is also convenient for cleaning; the inner surface of the lens is arranged in a certain rule, has good symmetry, reduces the complexity of design, is convenient for mold processing and manufacturing, and can make the entire lens meet the light distribution light shape and light intensity required by the position lamp regulations at the same time.

[0065] Embodiment 2

[0066] On the basis of embodiment 1, a more preferred scheme is that the first lens group and the second lens group are both fan-shaped and the number of each is four; the first lens group is arranged crosswise and symmetrically around the center point of the center lens; the second lens group is arranged crosswise and symmetrically around the center point of the center lens; specifically, the whole after splicing of the first lens group and the second lens group is copied once every 90° with the center point of the center lens as the axis to form a complete lens, thereby forming the cross and spaced arrangement of the first lens group and the second lens group around the center lens.

[0067] In this case, the lens is both left-right symmetric and up-down symmetric, so that the lens can be installed vertically or horizontally, improving the flexibility of use.

[0068] When the multifunctional vehicle signal lamp lens is installed vertically, the first lens group is used to refract the light emitted by the light source into a space solid angle of 20 degrees upward, 20 degrees downward, 85 degrees left and 85 degrees right relative to the center line of the signal lamp lens; as shown in FIG. 6, it is a light shape diagram of the first lens group, from which it can be seen that the light shape of the first lens group is relatively divergent, because functionally, the first lens is mainly responsible for meeting the requirements of the regulations on the light shape;

[0069] When the multifunctional vehicle signal lamp lens is vertically installed, the second lens group is used to refract the light emitted by the light source into a spatial solid angle of 22 degrees upward, 22 degrees downward, 22 degrees left, and 22 degrees right relative to the center line of the signal lamp lens; as shown in FIG. 7, it is a light shape diagram of the second lens group, and from the figure, it can be seen that the light shape of the second lens group is relatively concentrated, because from the functional point of view, the first lens is mainly used to supplement the brightness in the central area, and to avoid the appearance of uneven brightness in the central area.

[0070] In actual application, the minimum thickness of the multifunctional vehicle signal lamp lens is 2-2.5 mm; the maximum tooth height of each tooth pattern is not more than 50% of the overall thickness of the lens, which is beneficial to injection molding and reduces the use of materials, and low thickness is beneficial to the transmission of light and also helps to reduce the overall size of the optical system; in this embodiment, the top angles of the third tooth pattern, the fourth tooth pattern, the fifth tooth pattern, and the sixth tooth pattern are chamfered to a certain extent to prevent burrs from appearing at the sharp corner positions of the lens during the injection molding process, and also facilitate demolding;

[0071] The outer contour diameter of the multifunctional vehicle signal lamp lens is not greater than 14.6 mm, and the focal length is not greater than 4.5 mm; the focal points of each tooth pattern are located on the light source point, and the lens group composed of each tooth pattern accurately refracts or reflects the light emitted by the light source to the light shape required by the signal lamp regulations, so that a single lens can meet the requirements of the front position lamp, the rear position lamp, and the side position lamp at the same time. Due to the precise design of the split arrangement of the two lens groups and the angles of each tooth pattern, the brightness of the spliced light shape is uniform, and there are no bright and dark areas, achieving accurate control of the light emitted by the light source and improving the utilization rate of light;

[0072] A single lens, a light source, and a circuit board (the thickness is usually 0.2-1.6 mm) can form a module unit, and the overall size of a single unit can be controlled within the range of 15 mm wide, 15 mm long, and 10 mm high; because the volume of the unit is very small, when applied to the vehicle body, it can be copied according to the shape of the signal lamp design and then 3D arrayed, and the optical axis of each unit is parallel to the main optical axis of the vehicle lamp. The light emitted by all the copied units can be uniformly and multiply superimposed, which reduces the internal volume of the vehicle lamp, improves the degree of freedom of 3D modeling of the vehicle lamp, and meets the requirements of the vehicle signal lamp regulations on light intensity.

[0073] Based on the above description, the multifunctional vehicle signal lamp lens can be used as a general lens component in the design of vehicle lamps, thereby reducing the complexity and cost of vehicle lamp design;

[0074] The vehicle lamp design method is as follows:

[0075] The number of multifunctional vehicle signal lamp lenses is determined according to the type and shape of the vehicle lamp;

[0076] Arranging the positions of multifunctional vehicle signal lamp lenses according to the shape of vehicle lamps;

[0077] Designing the optical part frame of vehicle lamps according to the positions of multifunctional vehicle signal lamp lenses;

[0078] Designing optical functional components other than multifunctional vehicle signal lamp lenses on the optical part frame.

[0079] The multifunctional vehicle signal lamp lenses and the optical part frame of vehicle lamps can be designed in an integrated manner or in a split manner.

[0080] When designed in an integrated manner, the lenses, the optical part frame of vehicle lamps and other optical functional components can be integrally formed.

[0081] When designed in a split manner, the optical part frame of vehicle lamps is provided with fixed positions reserved according to the positions of multifunctional vehicle signal lamp lenses; the lenses and the fixed positions are provided with corresponding limiting structures for fixing the lenses and limiting the installation direction of the lenses.

[0082] Embodiment 3

[0083] As shown in FIGS. 8, 9, 10 and 11, the multifunctional vehicle signal lamp lenses are applied to the vehicle lamp design method described in the present application.

[0084] In the present example, the lenses are arranged in an inclined stepped manner to adapt to the line direction of the vehicle lamp; the reference sign A represents the lenses, the reference sign B represents the frame of the optical part of the vehicle lamp, and the reference sign C represents the position of the LED light source; in the present example, the lenses can be designed in an integrated manner due to the simple arrangement and small size of the lens array, and integrally formed by using a mold to reduce the assembly process.

[0085] Under the premise that the signal lamp lenses can be universal, the lens array conforming to various shapes of vehicle lamps can be very conveniently designed, the design difficulty of the optical part of the vehicle lamp is reduced, and thus more attention can be paid to the modeling design, which improves the degree of freedom of the modeling design of the vehicle lamp to a certain extent and improves the efficiency of the design and development of the vehicle lamp.

[0086] Advantages of the present application:

[0087] The multifunctional signal lamp lens for vehicle has smooth and flat outer surface, is easy to process and convenient to clean; the inner surface is composed of a center lens and first and second lens groups with different tooth patterns, which are arranged according to certain rules, thereby reducing the complexity of design and facilitating the processing and manufacturing of the mold; the angle and position of each tooth pattern are designed to irradiate the light emitted by the light source to the place specified by the signal lamp regulations in the form of refraction or reflection; the combination of different lens groups makes a single lens meet the requirements of front position lamp, rear position lamp and side position lamp, thereby improving the application range of the signal lamp lens, reducing the number of parts in the signal lamp and lowering the mold development cost; the design reduces the thickness of the lens, reduces the size of the vehicle lamp, improves the degree of freedom of the vehicle lamp modeling, speeds up the optical research and development cycle and is convenient for modular application.

[0088] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the scope of the present application disclosed herein can be easily thought of by those skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A multi-functional vehicle signal lens comprising a lens outer surface and a lens inner surface, the lens outer surface being a smooth surface, the lens inner surface being a multi-functional lens group, characterized in that, The multifunctional lens group is spliced by a center lens and a fan-shaped lens group; the center lens is located in the center area of the inner surface of the lens, and the center point of the fan-shaped lens group coincides with the center point of the center lens; the fan-shaped lens group includes a first lens group and a second lens group; the first lens group and the second lens group are staggered and symmetrically arranged around the center lens; the first lens group is composed of a plurality of first teeth patterns for forming a light shape; and the second lens group is composed of a plurality of second teeth patterns for supplementing brightness.

2. The multi-functional vehicle signal lamp lens according to claim 1, characterized by, The first teeth pattern includes a first tooth, a second tooth and a third tooth. The first tooth includes a first arc surface and a second arc surface; the included angle between the first arc surface and the outer surface of the lens ranges from 141° to 146°, and the included angle between the second arc surface and the outer surface of the lens ranges from 65° to 61°. The second tooth includes a third arc surface and a fourth arc surface; the included angle between the third arc surface and the outer surface of the lens ranges from 131° to 135°, and the included angle between the fourth arc surface and the outer surface of the lens ranges from 55° to 51°. The third tooth includes a fifth arc surface and a sixth arc surface; the included angle between the fifth arc surface and the outer surface of the lens ranges from 90° to 92°, and the included angle between the sixth arc surface and the outer surface of the lens ranges from 75° to 73°.

3. The multi-functional vehicle signal lamp lens according to claim 1, characterized by, The second teeth pattern includes a fourth tooth, a fifth tooth and a sixth tooth. The fourth tooth includes a seventh arc surface and an eighth arc surface; the included angle between the seventh arc surface and the outer surface of the lens ranges from 90° to 92°, and the included angle between the eighth arc surface and the outer surface of the lens ranges from 28° to 34°. The fifth tooth includes a ninth arc surface and a tenth arc surface; the included angle between the ninth arc surface and the outer surface of the lens ranges from 90° to 92°, and the included angle between the tenth arc surface and the outer surface of the lens ranges from 62° to 66°. The sixth tooth includes an eleventh arc surface and a twelfth arc surface; the included angle between the eleventh arc surface and the outer surface of the lens ranges from 90° to 92°, and the included angle between the twelfth arc surface and the outer surface of the lens ranges from 64° to 69°.

4. The multi-functional vehicle signal lamp lens according to claim 2, characterized by Each of the first lens groups includes a first tooth, a second tooth and a third tooth.

5. The multi-functional vehicle signal lamp lens according to claim 3, characterized by Each of the second lens groups includes a fourth tooth, a fifth tooth and a sixth tooth.

6. The multi-functional vehicle signal lamp lens according to any one of claims 1 to 5, characterized by The first lens groups and the second lens groups are all fan-shaped and the number of each is four; the first lens groups are crosswise and symmetrically arranged around the center point of the center lens; and the second lens groups are crosswise and symmetrically arranged around the center point of the center lens.

7. The multi-functional vehicle signal lamp lens according to claim 6, characterized by The top angle of the first lens group ranges from 11° to 25°.

8. The multi-functional vehicle signal lamp lens according to claim 7, characterized by When the multifunctional vehicle signal lamp lens is vertically installed, the first lens group is used to refract the light emitted by the light source into a space solid angle of 20 degrees upward, 20 degrees downward, 85 degrees left and 85 degrees right relative to the center line of the signal lamp lens.

9. The multi-functional vehicle signal lamp lens according to claim 6, characterized by The top angle of the second lens group ranges from 40° to 55°.

10. The multi-functional vehicle signal lamp lens according to claim 9, characterized by When the multifunctional vehicle signal lamp lens is vertically installed, the second lens group is used to refract the light emitted by the light source into a space solid angle of 22 degrees upward, 22 degrees downward, 22 degrees left and 22 degrees right relative to the center line of the signal lamp lens.

11. The multi-functional vehicle signal lamp lens according to claim 6, characterized by The minimum thickness of the multifunctional vehicle signal lamp lens is 2-2.5 mm; the tooth height of the first type of tooth pattern and the second type of tooth pattern is not more than 50% of the thickness of the multifunctional vehicle signal lamp lens.

12. The multi-functional vehicle signal lamp lens according to claim 6, characterized by The outer contour diameter of the multifunctional vehicle signal lamp lens is not more than 14.6 mm, and the focal length is not more than 4.5 mm.

13. A vehicle lamp design method comprising the multifunctional vehicle signaling lens of claims 6-12, wherein, The method comprises the following steps: According to the type and shape of the vehicle lamp, the number of multifunctional vehicle signal lamp lenses is determined; According to the shape of the vehicle lamp, the positions of the multifunctional vehicle signal lamp lenses are arranged; According to the positions of the multifunctional vehicle signal lamp lenses, the optical part frame of the vehicle lamp is designed; The optical functional components other than the multifunctional vehicle signal lamp lenses on the optical part frame are designed.

14. The method of designing a vehicle signal light according to claim 13, wherein, The multifunctional vehicle signal lamp lens and the optical part frame of the vehicle lamp are designed as a whole.

15. The method of designing a vehicle signal lamp according to claim 13, wherein, The multifunctional vehicle signal lamp lens and the optical part frame of the vehicle lamp are designed as a whole; the optical part frame of the vehicle lamp is reserved with a fixed position according to the position of the multifunctional vehicle signal lamp lens.

16. The method of designing a vehicle signal lamp according to claim 15, wherein, The multifunctional vehicle signal lamp lens and the fixed position are provided with corresponding limiting structures.

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