Multifunctional signal lamp lens and vehicle lamp design method based on lens

Abstract

The invention relates to a multifunctional automotive signal lamp lens which comprises a lens outer surface and a lens inner surface, and 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 comprises a first lens group and a second lens group; the first lens group and the second lens group are arranged around the central lens in a staggered manner and are composed of a plurality of insections with different radians; the outer surface of the lens is a smooth plane and is easy to process and convenient to clean; the inner surface is formed by a lens group consisting of a central lens and different insections according to a certain rule, so that the design complexity is reduced, and a mold is convenient to process and manufacture; the angle and position of each insection are designed so that light emitted by a light source can be irradiated to the position specified by a signal lamp rule in a refraction or reflection mode, the combination of different lens sets enables a single lens to meet the requirements of a front position lamp, a rear position lamp and a side position lamp at the same time, the lens is small in size, the size of the automobile lamp can be reduced, and the cost is reduced. And the modeling freedom degree is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile lamp technology, in particular to a multifunctional vehicle signal lamp lens and a vehicle lamp design method based on the lens. BACKGROUND

[0002] The position lamps installed on the vehicle 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 source + light distribution lens. Since the light shape and light intensity required by regulations are different, different optical lenses (the light distribution patterns on the lenses are different) are generally matched for each position lamp to achieve the light distribution effect required by each function. Moreover, each position lamp only meets the regulation requirements in one installation direction (horizontal or vertical), with low light efficiency, poor applicability, many parts, and high mold investment cost. SUMMARY

[0003] In view of the above-mentioned deficiencies of the current vehicle signal lamp lens, the present application provides a multifunctional vehicle signal lamp lens, which can simplify the optical structure and improve the universality.

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

[0005] A multifunctional vehicle signal lamp lens, comprising a lens outer surface and a lens inner surface, wherein the lens outer surface is a smooth surface, and the lens inner surface is a multifunctional lens group, the multifunctional lens group 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; wherein 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 includes a fifth arc surface and a sixth arc surface; the fifth arc surface has an angle range of 90-92 degrees with the outer surface of the lens, and the sixth arc surface has an angle range of 75-73 degrees with the outer surface of the lens.

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

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

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

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

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

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

[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 degrees.

[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 degrees.

[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 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 lamps, rear position lamps and side position lamps, 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 size 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] Figure 1 A perspective view of the multifunctional vehicle signal lamp lens according to the present application;

[0035] Figure 2 A perspective view of the multifunctional vehicle signal lamp lens according to the present application;

[0036] Figure 3 A perspective view of the multifunctional vehicle signal lamp lens according to the present application; Figure 2 A sectional view along the lines A-A and B-B;

[0037] Figure 4 A sectional view along the lines C-C and D-D; Figure 2 A sectional view along the lines C-C and D-D;

[0038] Figure 5 A perspective view of the multifunctional vehicle signal lamp lens according to the present application;

[0039] Figure 6 A light path diagram of the first lens group according to the present application;

[0040] Figure 7 A light path diagram of the second lens group according to the present application;

[0041] Figure 8 A front view of the lens array according to the second embodiment of the present application;

[0042] Figure 9 A rear view of the lens array according to the second embodiment of the present application;

[0043] Figure 10A top view of the lens array described in Embodiment 2 of the present application;

[0044] Figure 11 A side view of the lens array described in Embodiment 2 of the present application.

[0045] Legend: 1, outer surface of lens; 2, inner surface of lens; 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 a part of the embodiments of the present application, but not 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 labor fall within the scope of protection of the present application.

[0047] Embodiment 1

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

[0049] The type of tooth patterns 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 outer surface of lens ranges from 141° to 146°, and the included angle between the second arc surface and the outer surface of lens 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 outer surface of lens ranges from 131° to 135°, and the included angle between the fourth arc surface and the outer surface of lens ranges from 55° to 51°;

[0052] 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.

[0053] The second tooth pattern comprises a fourth tooth pattern, a fifth tooth pattern and a sixth tooth pattern.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] The angles between the arc surfaces and the outer surface of the lens all refer to the angles on the side of the opening facing the center of the lens (i.e. the inner side); wherein 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 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 arc surfaces facing the outer side of the lens; as Figure 5 Fig. 3 shows the angle between the third arc surface and the fourth arc surface of the second tooth pattern and the outer surface of the lens; in the figure, the reference numeral X represents the third arc surface, the reference numeral Y represents the fourth arc surface, the reference numeral a represents the angle between the third arc surface and the outer surface of the lens, and the reference numeral b represents the angle between the fourth arc surface and the outer surface of the lens.

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

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

[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 Figure 6 Fig. 4 shows the light pattern of the first lens group; it can be seen from the figure that the light pattern of the first lens group is relatively divergent, because the first lens is mainly responsible for meeting the requirements of regulations on the light pattern in terms of function;

[0061] The top angle of the second lens ranges from 40° to 55°; when the multi-functional 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 Figure 7 As shown in the light shape diagram of the second lens group, 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 region, and to avoid the uneven brightness in the central region.

[0062] In actual application, the minimum thickness of the multi-functional 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, 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, the fourth tooth, the fifth tooth and the sixth tooth are chamfered to a certain extent to prevent burrs from appearing at the sharp corner positions of the lens during injection molding, and also facilitate demolding.

[0063] In this embodiment, the outer contour diameter of the multi-functional 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 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 into 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 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 easy to clean; the inner surface of the lens is arranged in a certain rule, which has good symmetry, reduces the complexity of design, is convenient for mold processing and manufacturing, and can make the entire lens meet the requirements of the position lamp regulations at the same time.

[0065] Embodiment 2

[0066] On the basis of embodiment 1, a better 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 symmetrically arranged crosswise around the center point of the center lens; the second lens group is symmetrically arranged crosswise 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° around the center point of the center lens to form a complete lens, so as to form the cross-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 symmetrical and up-down symmetrical, 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 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; as Figure 6 The light shape of the first lens group is shown in the figure, and it can be seen from the figure 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 light shape of the regulations;

[0069] When the multifunctional vehicle signal lamp lens is installed vertically, 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 Figure 7 The light shape of the second lens group is shown in the figure, and it can be seen from the figure that the light shape of the second lens group is relatively concentrated, because functionally, the first lens is mainly used to supplement the brightness in the central area and avoid uneven brightness in the central area.

[0070] In actual application, the minimum thickness of the multifunctional vehicle signal lamp lens is 2-2.5mm; 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 material use, low thickness is beneficial to light transmission, and also helps to reduce 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 chamfered to a certain extent to prevent burrs from appearing at the sharp corner position during injection molding, and also facilitate demolding;

[0071] The outer contour diameter of the multifunctional vehicle signal lamp lens is not more than 14.6mm, and the focal length is not more than 4.5mm; 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 can meet the requirements of the front position lamp, the rear position lamp and the side position lamp, and due to the accurate design of the split arrangement of the two lens groups and the angle of each tooth, the brightness of the spliced light shape is uniform, without bright and dark areas, realizing accurate control of the light emitted by the light source, and improving the utilization rate of light;

[0072] A single lens plus light source and circuit board (thickness is usually 0.2mm to 1.6mm) can constitute a module unit, the overall size of a unit can be controlled in the range of 15mm wide, 15mm long, 10mm high; because the volume of the unit is small, when applied to the vehicle, the shape of the signal lamp can be copied and then 3D arrayed, 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, while reducing the internal volume of the vehicle lamp and improving the freedom of 3D modeling of the vehicle lamp, the regulatory light intensity requirements of the vehicle signal lamp are met.

[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] The positions of the multifunctional vehicle signal lamp lenses are arranged according to the shape of the vehicle lamp;

[0077] The optical part frame of the vehicle lamp is designed according to the positions of the multifunctional vehicle signal lamp lenses;

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

[0079] Among them, the multifunctional vehicle signal lamp lens and the optical part frame of the vehicle lamp can be designed integrally or separately;

[0080] When designed integrally, the lens, the optical part frame of the vehicle lamp and other optical functional components can be integrally formed;

[0081] When designed separately, the optical part frame of the vehicle lamp has a fixed position reserved according to the position of the multifunctional vehicle signal lamp lens; the lens and the fixed position are provided with corresponding limiting structures for fixing the lens and limiting the installation direction of the lens.

[0082] Embodiment 3

[0083] As Figure 8 , Figure 9 , Figure 10 and Figure 11 The multifunctional vehicle signal lamp lens described in the application applies the vehicle lamp design method described in the application;

[0084] In the present example, the lenses are arranged in a stepped manner to adapt to the line of the vehicle light; reference A in the figure indicates the lenses, reference B indicates the frame of the optical part of the vehicle light, and reference C indicates the position of the LED light source; in the present example, the array of lenses is simple and small in size, so it can be designed as a single unit and formed by a single mould to reduce the assembly process;

[0085] Under the premise that the signal light lens can be universal, the lens array that fits various vehicle light shapes can be designed very conveniently, the design difficulty of the optical part of the vehicle light is reduced, so more attention can be paid to the modeling design, which improves the degree of freedom of the vehicle light modeling design and the efficiency of the vehicle light design and development to some extent.

[0086] Advantages of the present application:

[0087] The outer surface of the signal light lens for a multifunctional vehicle is smooth and planar, which is easy to process and clean; the inner surface is composed of a first lens group and a second lens group composed of a center lens and different tooth patterns, which reduces the complexity of the design and facilitates the processing and manufacturing of the mould; 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 light regulations in a refractive or reflective manner, the combination of different lens groups makes a single lens meet the requirements of the front position light, the rear position light and the side position light at the same time, improves the application range of the signal light lens, reduces the number of parts in the signal light and the development cost of the mould; the design reduces the thickness of the lens, reduces the size of the vehicle light, improves the degree of freedom of the vehicle light modeling, speeds up the optical research and development cycle, and facilitates the modular application.

[0088] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the scope of the disclosed technology can be easily thought of by those skilled in the art, which 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 comprises 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; the second lens group is composed of a plurality of second teeth patterns for supplementing brightness.

2. The multifunctional vehicle signal light lens according to claim 1, characterized in that: The first teeth pattern comprises a first tooth, a second tooth and a third tooth. The first tooth comprises 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 comprises 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 comprises 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 comprises a fourth tooth, a fifth tooth and a sixth tooth. The fourth tooth comprises 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 comprises 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 comprises 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 comprises 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 comprises 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; 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 signal lamp lens for vehicles is vertically installed, the first lens groups are 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 signal lamp lens for vehicles is vertically installed, the second lens groups are 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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