Optical module, vehicle lamp and vehicle

Abstract

The invention provides an optical module, a vehicle lamp and a vehicle, and the optical module comprises a light source which is arranged at a light-emitting focus of a main reflecting surface or near the light-emitting focus; the reflecting component comprises the main reflecting surface, and the main reflecting surface comprises a root part and a light emitting end which are sequentially arranged in the main light emitting direction; the imaging focus of the main reflecting surface is positioned between the first lens and the second lens; the first lens is arranged in front of the reflecting component along the main light emitting direction and is used for adjusting light rays in a first direction; and the second lens is used for allowing the light rays transmitted by the first lens to pass through and adjusting the light rays from a second direction crossed with the first direction.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and in particular to an optical module, a vehicle lamp and a vehicle. Background Art

[0002] As vehicle lighting technology matures, higher requirements are placed on the uniformity, width and other optical properties of vehicle near and far beams. The mainstream vehicle lighting modules on the market currently use a single-focus lens optical system, which requires lenses with larger upper and lower openings. This solution occupies more volume in the upper and lower directions, and the overall length of the optical module in the front-to-back direction is larger.

[0003] In addition, the light pattern presented by the existing solution is prone to obvious color difference; and the requirements for assembly accuracy are also high. A slight offset will cause a large deformation or deviation of the light pattern; in addition, the flexibility of light pattern adjustment is poor and cannot meet the individual needs of different customers. Summary of the invention

[0004] In order to solve the above problems, the technical solutions adopted in the embodiments of the present application are as follows:

[0005] An optical module, comprising:

[0006] A light source, the light source being arranged at or near the light-emitting focus of the main reflecting surface;

[0007] A reflective component, comprising the main reflective surface, wherein the main reflective surface comprises a root portion and a light-emitting end sequentially arranged along a main light-emitting direction; an imaging focus of the main reflective surface is located between the first lens and the second lens;

[0008] A first lens is disposed in front of the reflective component along the main light emitting direction and is used to adjust the light in a first direction; and

[0009] a second lens, for allowing the light transmitted through the first lens to pass through and adjusting the light in a second direction, the second direction intersecting the first direction;

[0010] Wherein, in the main light emitting direction of the optical module, the second focus of the second lens is located behind the root, and the first focus of the first lens is located in front of the second focus; with the mounting base surface as a reference, the middle part of the root protrudes in the direction away from the mounting base surface and forms a curved structure of the root, or the distance between the middle part of the root and the mounting base surface is greater than the distance between the side part of the root and the mounting base surface.

[0011] The imaging focus of the main reflection surface designed in this application is located between the first lens and the second lens. Since the light directly enters the second lens after crossing up and down at the imaging focus, the vertical dimensions of the light reaching the light incident surface of the second lens are small, and all of them can enter the second lens through the light incident surface, avoiding leakage from the upper and lower edges of the second lens, and the light energy utilization rate is high. After the light converges between the first lens and the second lens, it crosses and passes through the second lens before being emitted. The final output light pattern has a small vertical dimension, and the light emission and imaging are more focused and the light efficiency is high, which is in line with the current trend of small openings. Compared with traditional structures, the length of the optical module is significantly shortened, and it will not encroach on the space at the head of the vehicle.

[0012] This application does not require high precision in the installation positions of the reflective components and lens components; the display state of the light type can be flexibly adjusted to meet the individual needs of different customers.

[0013] In some embodiments, the first focus is located in the middle of the root of the reflecting component; in the main light emitting direction of the optical module, the second focus is located behind the root of the reflecting component, and the distance between the second focus and the first focus is 1-3 mm.

[0014] In some embodiments, the distance between the second focus and the first focus is 1.5-2 mm.

[0015] In some embodiments, a surface of the second lens on one side close to / far away from the first lens is a cylinder, and a normal of a plane where a directrix of the cylinder is located is perpendicular to the second direction; or, a surface of the first lens on one side close to / far away from the second lens is a cylinder, and a normal of a plane where a directrix of the cylinder of the first lens is located is perpendicular to the first direction.

[0016] In some embodiments, the radius of curvature of the cylindrical surface of the second lens surface is 900 mm to 1500 mm.

[0017] In some embodiments, there are multiple first lenses, which are arranged side by side in a third direction at an angle to the main light emitting direction, and the first lens close to the side is a side lens, and the converging light emitting direction of the side lens is toward the side lens on the other side and toward the front of the main light emitting direction.

[0018] In some embodiments, the reflective component further includes: a second dimming surface, which is arranged behind the main reflective surface along the main light emitting direction and close to the root of the main reflective surface, and is configured to receive the light transmitted to its surface and project it toward the rear of the main light emitting direction;

[0019] Alternatively, the reflecting component also includes a blocking extinction surface, which is arranged behind the main reflecting surface along the main light emitting direction, and the blocking extinction surface and the main reflecting surface are arranged in sequence in the direction away from the mounting base surface; the blocking extinction surface is configured to block and at least partially absorb light projected onto the surface.

[0020] In some embodiments, with the mounting base as a reference, the height of a side edge of the second dimming surface away from the main reflection surface is greater than the height of a side edge of the second dimming surface close to the main reflection surface; the angle β between the second dimming surface and the mounting base is greater than or equal to 0° and less than or equal to 10°.

[0021] A vehicle lamp comprises any one of the above-mentioned optical modules.

[0022] A vehicle comprising any one of the above-mentioned vehicle lights.

[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a light path simulation diagram for this application;

[0026] Figure 2 A schematic diagram of the three-dimensional structure of an optical module provided in one embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the reflective component of the present application observed from the front perspective of the main light emitting direction (also Figure 7 A in the forward view);

[0028] Figure 4 A schematic top view of light adjustment by a first lens of an optical module provided in an embodiment of the present application;

[0029] Figure 5 The low beam light pattern is formed after the first lens is adjusted horizontally and the second lens is adjusted vertically;

[0030] Figure 6 A side view of an optical module provided by another embodiment of the present application;

[0031] Figure 7A side view of a reflective component, a light source, and a circuit board provided in accordance with another embodiment of the present application;

[0032] Figure 8 for Figure 7 Embodiment of the invention reduces the light path diagram of stray light;

[0033] Fig. 9 A side view of a reflective component, a light source, and a circuit board provided in accordance with another embodiment of the present application;

[0034] Fig.10 A schematic diagram of a plurality of reflective components arranged side by side;

[0035] Fig.11 is a schematic diagram of a lens mounting portion provided in an embodiment of the present application;

[0036] Fig.12 It is a structural schematic diagram of a through slot provided in an embodiment of the present application;

[0037] Fig.13 is a schematic diagram of the structure of another through slot provided in an embodiment of the present application;

[0038] Fig.14 is a schematic diagram of a lens after demoulding provided in an embodiment of the present application;

[0039] Fig.15 is a schematic diagram of the structure of another through slot provided in an embodiment of the present application;

[0040] Fig.16 is a schematic diagram of assembling a first lens and a reflective component provided in an embodiment of the present application;

[0041] Fig.17 yes Fig.16 The main view of

[0042] Fig.18 yes Fig.17 The enlarged view of point A in the middle;

[0043] Fig.19 yes Fig.17 An enlarged view of another embodiment at A in the middle;

[0044] Fig. 20 yes Fig.16 Exploded diagram of

[0045] Fig.21 This is a schematic diagram of a first lens provided in an embodiment of the present application.

[0046] In the figure:

[0047] 10. Reflective components; 101. Leather structure;

[0048] 20. Light source;

[0049] 30, collimating light-transmitting component; 31, first lens; 31a, side lens; 32, second lens; 32a, mounting ear; 11, main body; 111, light-entering surface; 1111, first photon-entering surface; 1112, second photon-entering surface; 112, light-emitting surface; 113, connecting surface; 12, mounting portion; 121, first surface; 122, second surface; 13, light-transmitting protrusion; 131, refractive surface; 1311, first refractive sub-surface; 1312, second refractive sub-surface; 132, demoulding inclined surface;

[0050] 40. Circuit board;

[0051] 50. Irradiation area;

[0052] 60. Positioning structure; 61. Positioning block; 62. Positioning groove; 63. Welding protrusion;

[0053] 70. Installation clearance.

[0054] 100. Main reflective surface; 110. Root; 120. Light-emitting end;

[0055] 200, second dimming surface; 210, sink;

[0056] 300, blocking the matte surface;

[0057] 400, positioning mounting surface; 410, positioning hole;

[0058] 500, resist plating groove;

[0059] 1. Main body; 1-1. Light incident surface; 1-2. Light emitting surface;

[0060] 2. mounting portion; 21. threaded through hole; 22. through groove; 221. first groove section; 2211. first wall; 222. second groove section; 2222. second wall; 23. first surface; 24. second surface; 25. positioning through hole; 26. raised portion;

[0061] 3. Stability department;

[0062] a, installation base surface; λ, symmetry reference plane. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0064] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0065] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0067] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0068] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0069] The optical module provided by this application is exemplarily described below:

[0070] refer to Figure 1-Figure 3 On one hand, the present application provides an optical module, including:

[0071] A light source 20, wherein the light source 20 is disposed at or near the light emitting focus of the main reflecting surface 100;

[0072] The reflective component 10 comprises the main reflective surface 100, wherein the main reflective surface 100 comprises a root portion 110 and a light emitting end 120 sequentially arranged along the main light emitting direction; the imaging focus of the main reflective surface 100 is located between the first lens 31 and the second lens 32;

[0073] A first lens 31 is disposed in front of the reflective component 10 along the main light emitting direction and is used to adjust the light in a first direction; and

[0074] The second lens 32 is used for allowing the light transmitted through the first lens 31 to pass through and adjusting the light in a second direction, the second direction intersecting with the first direction; the first focus and the second focus are both located behind the light source 20;

[0075] In the main light emitting direction of the optical module (the X direction in the figure), the second focus of the second lens 32 is located behind the root 110, and the first focus of the first lens 31 is located in front of the second focus; the mounting base a of the reflective component 10 (for example Figure 2 With the surface of the heat sink in the middle as a reference, the middle portion of the root 110 protrudes in a direction away from the mounting base surface a (the upward direction along the Z-axis in the figure) to form a curved structure of the root 110, or, in the direction along the Z-axis, the distance between the middle portion of the root 110 and the mounting base surface a is greater than the distance between the side portion of the root 110 and the mounting base surface a.

[0076] Specifically, the light source 20 is disposed near the light-emitting focus of the main reflecting surface 100, which means that the light source 20 is disposed at a position 0-10 mm away from the light-emitting focus of the main reflecting surface 100. The light emitted by the light source 20 is reflected by the main reflecting surface 100 of the reflecting component 10 and then emitted along the main light-emitting direction (the X direction in the figure), and is adjusted from the first direction by the first lens 31 and from the second direction by the second lens 32 in sequence, and finally projected forward from the light-emitting side of the second lens 32. The projected light pattern, such as the low beam and / or high beam light pattern, is an inverted image of the main reflecting surface 100 of the reflecting component 10 (the upper edge of the light pattern presents a shape corresponding to the root 110 of the reflecting component 10). In some embodiments, the first direction may be a horizontal direction, and the second direction may be a vertical direction.

[0077] In the present application, the light directly enters the second lens 32 after crossing up and down at the imaging focus. Since the imaging focus of the main reflection surface 100 is designed to be located between the first lens 31 and the second lens 32, the width dimension in the up and down directions of the light reaching the light incident surface of the second lens 32 after the light crosses is relatively small, and all of the light can enter the second lens 32 through the light incident surface of the second lens 32, thereby avoiding leakage from the upper and lower edges of the second lens 32, and achieving high light energy utilization. After the light converges between the first lens 31 and the second lens 32, it crosses and passes through the second lens 32 before being emitted. The final emitted light pattern also has a small dimension in the up and down directions, and the light emission and imaging are more focused and the light efficiency is high, which is in line with the current trend of small openings. When calculating the overall length of the optical module, there is no need to superimpose the focal length of the reflective component 10 and the focal length of the lens as in the traditional solution, so that the length of the optical module is significantly shortened compared to the traditional structure, and the space at the head of the vehicle is not encroached inward.

[0078] The present application utilizes two lenses to adjust light types from different directions respectively, which can at least partially eliminate the aberration and chromatic aberration generated during unified adjustment.

[0079] In the main light emitting direction of the optical module of the present application, the second focus is located behind the root 110, and the first focus is located in front of the second focus. When the first focus and the second focus are designed to be spaced in front and back, the upper edge of the presented light pattern can achieve the expected soft look (not sharp) to meet the individual needs of customers; however, when the second focus of the second lens 32 deviates from the root 110 and is set back behind the root 110, the upper edge of the final projected light pattern will be significantly deformed and bent (for example, the middle of the upper edge of the light pattern bulges upward), which cannot meet the straight shape required by regulations, so the middle of the root 110 is designed to be facing away from the mounting base a ( Figure 1 The upward curved structure is curved along the Z-axis upward direction, that is, the size of the middle part of the reflective component 10 in the vertical direction is reduced. After the applicant cooperates with this design, the upper edge of the final light pattern is adjusted to achieve the expected basically straight effect and the light pattern is soft, such as Figure 5 shown.

[0080] The present application does not require high precision in the installation positions of the reflective component 10 and the lens components, and even a slight deviation will have little impact on the light pattern; the display state of the light pattern can be flexibly adjusted to meet the individual needs of different customers.

[0081] It is worth pointing out that the above-mentioned focus form can be a single focus, or a focal line or focal plane form according to the different forms of the lens surface, and this application does not limit it.

[0082] refer to Figure 1In some embodiments, in the light emitting direction (X direction) of the optical module, the first focus is located in the middle part of the rear part of the root 110; in the light emitting direction (X direction) of the optical module, the second focus is located behind the middle part of the root 110 of the reflecting component 10, and the distance between the second focus and the first focus is 1-3 mm.

[0083] Specifically, the first focus of the first lens 31 is located in the middle portion of the rear portion of the root 110 of the main reflection surface 100. In this case, when the first lens 31 adjusts the light pattern along the first direction (the Y direction, the horizontal direction in the figure), it cooperates with the second lens 32 to adjust from the second direction (the Z direction, the vertical direction in the figure) to ensure that the vertical line of the middle cutoff portion of the upper edge of the light pattern is sharp and clear.

[0084] In the light emitting direction (X direction) of the optical module, the second focus is behind the root 110 of the main reflecting surface 100. In this case, when the second lens 32 adjusts the light pattern along the second direction (such as the vertical direction), it can ensure that the upper edge of the light pattern looks softer overall. It has been verified that when the distance between the second focus and the first focus is greater than 3mm, the upper edge imaging boundary is too blurred, and the clarity of the upper edge of the light pattern near the middle cutoff part is weak, while when the distance between the second focus and the first focus is within the range of 1-3mm, the upper edge imaging boundary of the light pattern is clear, the softness is better, and the middle cutoff part is displayed more clearly and sharply. More preferably, the distance between the second focus and the first focus is 1.5-2mm.

[0085] Of course, in other embodiments, the first focus may also be set at the root 110 of the reflective component 10 or near the root 110 (near here means close to the root 110, and the first focus is within the range of 0-5mm from the root 110), and the present application does not impose any restrictions on this.

[0086] refer to Figure 1 In some embodiments, a surface of the second lens 32 on one side close to / far away from the first lens 31 is a cylinder, and a normal of a plane where the directrix of the cylinder is located is perpendicular to a second direction (such as the Z direction, the vertical direction in the figure).

[0087] Specifically, the cylindrical surface of the second lens 32 can converge light in the second direction. Taking the second direction as the vertical direction as an example, one side surface of the second lens 32 is an outer convex cylindrical surface, and the light entering the second lens 32 is converged in the vertical direction when it is emitted, so as to form a clear light pattern.

[0088] In some embodiments, the radius of curvature of the cylindrical surface of the second lens 32 is 900 mm to 1500 mm. According to tests, when this parameter is used, the light pattern formed has clear boundaries, good softness, and high brightness.

[0089] refer to Figure 4 In some embodiments, the surface of one side of the first lens 31 close to / far from the second lens 32 is a cylinder, and the normal of the plane where the directrix of the cylinder of the first lens 31 is located is perpendicular to the first direction (such as the Y direction and the horizontal direction in the figure). Specifically, the cylinder of the first lens 31 can converge the light in the first direction. Taking the first direction as the horizontal direction as an example, the first lens 31 converges the light entering it once in the horizontal direction, and the adjusted light is converged twice vertically by the second lens 32 in the vertical direction. The two directions are adjusted in sequence to make the vertical line of the middle cutoff part of the upper edge of the light pattern sharp and clear.

[0090] refer to Figure 2 In some embodiments, there are multiple first lenses 31, which are arranged side by side in a third direction at an angle to the main light emitting direction, and the first lens 31 close to the side is a side lens 31a, and the converging light emitting direction of the side lens 31a is toward the side lens 31a on the other side and toward the front of the main light emitting direction. Specifically, multiple first lenses 31 can share the first lens 32. Taking the third direction as the width direction of the optical module as an example, the converging light emitting direction of the side lens 31a close to the side is toward the side lens 31a on the other side and toward the front of the main light emitting direction, which can fully expand the width range of the low beam light pattern formed by the entire optical module in the third direction; and, the converging light emitting direction of the side lens 31a close to the side is toward the side lens 31a on the other side. After the light is emitted from the light emitting surface of the side lens 31a, it is emitted obliquely forward and will not illuminate the area directly in front of the side lens 31a, so there is no need to arrange the second lens 32 directly in front of the side lenses 31a on both sides, and the second lens 32 does not need to be extended to the front of the side lens 31a. Therefore, the size of the second lens 32 in the width direction of the entire optical module can be greatly reduced, saving material costs. Correspondingly, the spacing between the mounting ears 32a on both sides of the second lens 32 is also smaller, which is conducive to reducing the installation space size of the entire optical module on the vehicle body.

[0091] refer to Figure 6-Figure 8 In some embodiments, the reflective component 10 further includes: a second dimming surface 200, which is arranged behind the main reflective surface 100 along the main light emitting direction and close to the root 110 of the main reflective surface 100, and is configured to receive light transmitted to its surface and project it toward the rear of the main light emitting direction.

[0092] Specifically, the purpose of defining the main light direction in this application is to distinguish it from the stray light projected backwards. The main light direction is specifically Figure 6After the reflective component converges the light, it projects the light from back to front to form the direction of the expected light pattern. In some products, the reflective component can be in the form of a reflector or a reflector, and the projection form is reflection; of course, in some other embodiments, light guide dimming, TI R convergence dimming, etc. can also be used instead. Figure 6 The main reflecting surface 100 receives part of the light emitted by the light source 20 and converges the light forward to form an expected light type such as high beam or low beam; the light irradiated to the second dimming surface 200 will be adjusted by the second dimming surface 200 and projected (in the form of projection, including guidance or reflection) to the rear (directly rearward or at a certain angle away from the rearward) along the main light emitting direction, thereby avoiding scattered emission to form stray light that affects the beauty of the light effect. After adjustment by the reflective component 10 of this embodiment, the uncontrollable stray light can also be weakened, and the light type presented is clear, so that the opposite lane is not affected, and no obvious bright line is formed in front of the car to attract the driver's attention, and driving safety is guaranteed;

[0093] In the present application, the light hitting the second dimming surface 200 is concentratedly projected backwards and is absorbed very little by the second dimming surface 200, thereby avoiding heat absorption and burning, thereby improving the safety and service life of the entire vehicle; since the heat of the reflective component 10 is controllable, materials with general temperature resistance can be selected, reducing material costs.

[0094] In this embodiment, there is no need to add new elements or structural parts to the optical system to block stray light, thus avoiding the problem of adding new elements to occupy space, affect light efficiency, increase product volume, and increase design difficulty, thereby improving system tolerance and design flexibility; and also eliminating the cost increase caused by adding parts.

[0095] In the present application, the reflected light emission direction preset by the main reflection surface 100 of the reflection component 10 is the main light emission direction, and the main reflection surface 100 is a surface structure. Figure 6 , in the vertical section extending along the main light emitting direction (roughly along the front-to-back direction), the light emitting end 120 of the main reflecting surface 100 is in a point shape, and Figure 3 In the three-dimensional space, the light emitting end 120 of the main reflection surface 100 is in the form of a light emitting edge, that is, it can be seen from the front of the main light emitting direction that the light emitting end 120 is an arc shape.

[0096] refer to Fig. 9In some embodiments, the projection size L1 of the second dimming surface 200 on the longitudinal section extending along the main light emitting direction and perpendicular to the mounting base surface a is 1mm-8mm. Specifically, the light source 20 is usually assembled with the reflective component 10. When installed, the light source 20 is arranged on the mounting base surface a, and the light emitting surface of the light source 20 faces the main reflective surface 100 and the second dimming surface 200; taking the mounting base surface a as a horizontal plane as an example, the longitudinal section perpendicular to the mounting base surface a is a longitudinal vertical section. At this time, the projection size L1 of the second dimming surface 200 on the longitudinal section perpendicular to the mounting base surface a is 1mm-8mm. Within this range, the projection size L1 of the second dimming surface 200 on the longitudinal section will not be too small, resulting in a small light receiving area and a small amount of light projected backward. It has been verified that when L1 is less than 1mm, the working temperature of the reflective component 10 reaches about 200°C; the size L1 will not be too large, resulting in an increase in material costs and occupying installation space. In this embodiment, when the projection size L1 is 1mm-8mm, the stray light formed is significantly reduced, and the working temperature of the reflective component 10 is also reduced to about 150-160°C, so a size range with better implementation effect is given in this embodiment. The above is an explanation of the size of the second dimming surface 200 from the perspective of the projection size. If the main light emitting direction is used as a reference, along the main light emitting direction, the distance between the root and the side edge of the second dimming surface away from the main reflective surface is 1mm-8mm, which can achieve the same technical effect.

[0097] In some embodiments, when a longitudinal section passing through the rearmost end of the root 110 is selected, along the main light emitting direction, the distance between the rear end of the root 110 and one side of the second dimming surface 200 away from the main reflecting surface 100 ranges from 1mm to 5mm. In this embodiment, since the rear end of the root 110 is at a more rearward position along the main light emitting direction, the distance between the rear end of the root 110 and the side of the second dimming surface 200 away from the main reflecting surface 100 is selected to be a smaller value of 1mm-5mm. When this size range is adopted, the stray light formed is significantly reduced, and the operating temperature of the reflective component 10 is also reduced to 150-160°C.

[0098] refer to Fig. 9 In some embodiments, a side edge of the second dimming surface 200 close to the main reflecting surface 100 is connected to the root 110 .

[0099] Specifically, the second dimming surface 200 is connected to the root 110 of the main reflecting surface 100, and there is no gap between the two, so that no light will leak out from the gap between the main reflecting surface 100 and the second dimming surface 200, thereby preventing the escaped light from being uncontrolled and preventing the light from being emitted to the invalid area to reduce the brightness of the main light type display.

[0100] In some embodiments, the main reflective surface 100 and the second dimming surface 200 are formed by coating a reflective layer on the surface of a basic structure (such as a reflector substrate). Specifically, the reflective layer can be made of a material layer with a certain reflective ability such as an aluminum layer, and the main reflective surface 100 and the second dimming surface 200 coated with the reflective layer can achieve the expected dimming effect; of course, in other embodiments, other processes such as electroplating, chemical plating, etc. can also be used, and metals, plastics, etc. with a certain reflective ability can also be used to directly integrally form the main reflective surface 100 and the second dimming surface 200 reflector with surface dimming ability.

[0101] In some embodiments, the reflective component 10 is made of PC-HT (high temperature resistant PC, copolycarbonate) or PEI (polyetherimide, PE I for short). The surface of PC-HT or PE I is easier to bond the reflective layer, and will not fall off due to long-term use, so the structural stability is guaranteed.

[0102] refer to Figure 7 and Figure 8 In some embodiments, with the mounting base a as a reference, the height of one side of the second dimming surface 200 away from the main reflective surface 100 is greater than the height of one side of the second dimming surface 200 close to the main reflective surface 100. The figure takes the case where the mounting base a is a horizontal plane as an example. In this embodiment, the rear height of the main reflective surface 100 along the main light emitting direction is greater than the front height, which is conducive to projecting light to the rear along the main light emitting direction. Furthermore, the angle β between the second dimming surface 200 and the mounting base a is greater than or equal to 0° and less than or equal to 10°. If the inclination angle is too large, the light may be reflected backward and upward, increasing the difficulty of control.

[0103] refer to Figure 7 and Figure 3 In some embodiments, the second dimming surface 200 is a curved surface that is concave in a direction away from the mounting base a. The concave curved surface has a convergence effect on light, and can converge the light and project it to the rear of the main light emitting direction, which has high projection efficiency and can also prevent the light projected by the second dimming surface 200 from diverging into scattered light again.

[0104] refer to Figure 7 and Figure 8 In some embodiments, it also includes a blocking extinction surface 300, which is arranged behind the second dimming surface 200 along the main light-emitting direction, and the blocking extinction surface 300 and the main reflection surface 100 are arranged in sequence in the direction away from the mounting base surface a; the blocking extinction surface 300 is configured to block and at least partially absorb the light projected backward by the second dimming surface 200, and then reflect the light in a direction away from the second dimming surface 200.

[0105] After the light projected backward by the second dimming surface 200 hits the blocking extinction surface 300, the energy of the light reflected after being partially absorbed by the blocking extinction surface 300 is weakened twice, and a small amount of the weakened reflected light hits the circuit board 40 on the mounting base surface a, and its energy is far from enough to burn the circuit board 40. Moreover, the energy of the light after the secondary weakening that hits the circuit board 40 is very small, and after being absorbed by the circuit board 40 on the mounting base surface a, it will basically not be reflected into high-intensity stray light; a small amount of light that may be reflected forward by the circuit board 40 on the mounting base surface a can also have a brightness gain for the main light type.

[0106] By implementing this solution, the light projected backward by the second dimming surface 200 can be controlled to avoid the light projected backward being uncontrollably projected toward a certain area again to form irregular stray light or cause a certain area to heat up, and to avoid excessive light leakage from the rear to reduce the brightness of the light type display.

[0107] refer to Figure 7 In some embodiments, the angle α between the blocking extinction surface 300 and the second dimming surface 200 ranges from 90° to 170°. It has been verified that when the angle is too large, the amount of light hitting the blocking extinction surface 300 is too small, and only part of the light projected backward can be adjusted. The light reflected to the circuit board will be reflected backward, and the brightness gain of the light type is small; when the angle is too small, part of the light reflected by the blocking extinction surface 300 cannot hit the circuit board 40 on the mounting base a and is absorbed. These lights may also be directly and irregularly reflected forward to form stray light that affects the light type.

[0108] As a preferred embodiment, the angle α between the blocking extinction surface 300 and the second dimming surface 200 has a value range of 115°-135°. It has been verified that when this angle range is selected, the amount of light hitting the blocking extinction surface 300 is relatively large, and the circuit board 40 on the mounting base surface a will reflect more of the light that hits its surface after being absorbed forward and has a brightness enhancement gain for the main light type; and when this angle range is selected, the reflected light will basically hit the circuit board 40 on the mounting base surface a and be absorbed, and the amount of stray light is minimal.

[0109] refer to Fig. 9 In some embodiments, when the reflective component 10 is installed, the end of the blocking extinction surface 300 away from the second dimming surface 200 is fixed on the mounting base surface a. With the mounting base surface a as a reference, the angle γ between the blocking extinction surface 300 and the mounting base surface a ranges from 10° to 80°. It has been verified that when the angle is too small, the amount of light hitting the blocking extinction surface 300 is relatively small, and only a part of the light projected backward can be adjusted. The light reflected to the circuit board will be reflected backward, and the brightness gain of the light type is small; when the angle is too large, part of the light reflected by the blocking extinction surface 300 cannot hit the circuit board 40 on the mounting base surface a and is absorbed. These lights may also be directly and irregularly reflected forward to form stray light that affects the light type.

[0110] As a preferred embodiment, the angle γ between the blocking and extinction surface 300 and the mounting base surface a is in the range of 45°-55°. It has been verified that when this angle range is selected, a large amount of light hits the blocking and extinction surface 300, and the circuit board 40 will also reflect more light that hits its surface and is absorbed forward, thereby increasing the brightness of the main light type; and when this angle range is selected, the light reflected by the blocking and extinction surface 300 can basically hit the circuit board 40 on the mounting base surface a and be absorbed.

[0111] refer to Figure 3 In some embodiments, the blocking extinction surface 300 forms a stripe structure. The stripe structure disperses the light energy through multiple reflections and scattering, thereby reducing the intensity of the light that contacts its surface. Furthermore, whether it is horizontal stripes, vertical stripes or mesh stripes, it can achieve the desired purpose of scattering light and reducing light intensity to a certain extent.

[0112] The present application sets a blocking extinction surface 300 and introduces a stripe structure, which not only blocks the light reflected and escaped from the second dimming surface 200 and reflects it to the circuit board 40 on the mounting base surface a; it also effectively weakens the intensity of the light through the interaction with the stripe structure, thereby greatly improving the temperature control safety performance and display light effect of the module.

[0113] refer to Figure 3 In some embodiments, a side edge of the blocking extinction surface 300 close to the second dimming surface 200 is connected to a side edge of the second dimming surface 200 away from the main reflection surface 100 .

[0114] Specifically, the blocking extinction surface 300 is connected to the second dimming surface 200, and there is no gap between the two, so that no light will leak out from the gap between the second dimming surface 200 and the blocking extinction surface 300, thereby preventing the light reflected by the second dimming surface 200 or the blocking extinction surface 300 from escaping uncontrollably, and also preventing the light from being emitted to the invalid area to reduce the display brightness.

[0115] refer to Figure 3 In some embodiments, a plating-resistance groove 500 is provided on one side of the second dimming surface 200 close to the blocking extinction surface 300. The plating-resistance groove 500 serves as a boundary between the second dimming surface 200 and the blocking extinction surface 300. The design of the plating-resistance groove 500 can prevent the reflective layer on the surface of the second dimming surface 200 from diffusing to the blocking extinction surface 300, and prevent the reflective layer from adhering to the surface of the blocking extinction surface 300, which has a strong reflective effect and then directly reflects light to the circuit board 40, causing it to heat up significantly.

[0116] Therefore, setting the anti-plating groove 500 is beneficial to blocking the extinction surface 300 from playing the expected blocking and dimming effect; and, the anti-plating groove 500 is a structure that is recessed toward the side away from the mounting base surface a, and does not protrude from the second dimming surface 200, and does not block the light path, thereby avoiding affecting the normal realization of the dimming function of the present application.

[0117] refer to Figure 7 and Figure 3 In some embodiments, it also includes a positioning installation surface 400, which is arranged behind the blocking extinction surface 300 along the main light-emitting direction and is configured to be positioned and installed on the installation base surface a; a side edge of the positioning installation surface 400 close to the blocking extinction surface 300 is connected to a side edge of the blocking extinction surface 300 away from the second dimming surface 200.

[0118] Specifically, the positioning hole 410 on the surface of the positioning mounting surface 400 is sleeved on the positioning pin on the surface of the mounting base surface a, so as to be fixed to the mounting base surface a, and the position of the reflective component 10 of the present application is fixed. In addition, the positioning mounting surface 400 is connected to the blocking extinction surface 300, and there is no gap between the two, so that no light will leak from the gap between the positioning mounting surface 400 and the blocking extinction surface 300, thereby preventing the light reflected by the blocking extinction surface 300 from escaping and becoming uncontrolled, and also preventing the light from being emitted to the invalid area to reduce the display brightness.

[0119] refer to Figure 3 In some embodiments, the main reflective surface 100 is a parabola with a single focus or an ellipse with two focuses. Of course, the parabola-like and ellipse-like shapes formed by making approximate adjustments based on the standard parabola and standard ellipse are also within the protection scope of this application.

[0120] refer to Figure 3 and Fig.10 In some embodiments, there are multiple reflective components 10, which are arranged side by side in a direction that forms an angle with the main light emitting direction, and at least two adjacent second dimming surfaces 200 are connected.

[0121] Specifically, the angle is an acute angle greater than 0°, there are multiple reflective components 10 and they are arranged side by side, and multiple main reflective surfaces 100 can form personalized light patterns in different forms; at least two adjacent second dimming surfaces 200 are connected, and the multiple connected second dimming surfaces 200 are longer and have a larger expansion area. The second dimming surfaces 200 can project stray light leaked from adjacent reflective components 10 toward the rear along the main light output direction, so that each second dimming surface 200 cooperates with each other to further weaken the uncontrollable stray light, so that the impact on the opposite lane and the driver of the vehicle is further reduced, the amount of stray light absorbed by each reflective component as a whole can be further reduced, and the risk of burning is also further reduced, which is beneficial to improve the safety and service life of the entire vehicle and reduce material costs.

[0122] refer to Figure 3 In some embodiments, a recessed groove 210 is provided on the surface of the second dimming surface 200, and the recessed groove 210 is recessed in a direction away from the mounting base surface a, and the two ends of the recessed groove 210 in the length direction extend forward to the root 110 of the main reflecting surface 100, and extend backward to the position where the second dimming surface 200 and the blocking extinction surface 300 are connected.

[0123] Specifically, on the one hand, the cross-section of the groove 210 is in a bent line shape, so that when the light is projected along the main light emitting direction, a light pattern with a cutoff edge can be formed in front of the main light emitting direction; on the other hand, the groove 210 is recessed to a greater depth in the direction away from the mounting base surface a, and each groove wall surface of the groove 210 has a more obvious convergence effect on the stray light entering therein, and these light rays can be converged and concentrated and then projected toward the rear of the main light emitting direction, with high projection efficiency, and can also prevent the light projected from the surface of the second dimming surface 200 from diverging into scattered light again.

[0124] On the other hand, when the lens is assembled to the heat sink by screws, the lens may crack due to the lens material, reducing the yield rate of the product. Even if the lens does not crack during installation, there is still a risk of cracking during later use, affecting the optical effect of the lens.

[0125] To this end, in some embodiments, the second lens 32 is taken as an example to illustrate the improved method of the present application. The second lens 32 includes a body and a mounting portion, and the mounting portion is arranged on the body; wherein the mounting portion is provided with a threaded through hole, and the hole wall of the threaded through hole is provided with a through groove penetrating the mounting portion to separate the hole wall of the threaded through hole; the groove width of the through groove gradually increases along the axial direction of the threaded through hole, and the through groove includes a first groove section and a second groove section adjacent to each other, and the groove wall of the connected first groove section is not coplanar with the groove wall of the second groove section; the groove width dimension of the end of the first groove section away from the second groove section is d1㎜, the groove width dimension of the connection between the first groove section and the second groove section is d2㎜, and the groove width dimension of the end of the second groove section away from the first groove section is d3㎜, satisfying: d3>d2>d1. By setting a through groove on the hole wall of the threaded through hole, and the through groove passes through the mounting part, the stress when the screw is tightened can be released, and the mounting part (threaded through hole) is avoided from cracking; the through groove includes a first groove section and a second groove section adjacent to each other, the groove wall of the connected first groove section and the groove wall of the second groove section are not coplanar, and the groove width of the first groove section and the second groove section gradually increases in the direction from the first groove section to the second groove section, and the groove width of the second groove section is greater than the groove width of the first groove section. Such a setting avoids the cracking of the mounting part (threaded through hole) and can also avoid the tearing of the lens (threaded through hole) when demolding, thereby improving the product yield and reducing the production cost. The following is a detailed explanation.

[0126] Specific reference Fig.11 and Fig.13The second lens 32 includes a body 1 and a mounting portion 2, wherein the mounting portion 2 is arranged on the body 1, and the body 1 is mounted in the vehicle lamp through the mounting portion 2, and the body 1 is used to adjust the light of the vehicle lamp; a threaded through hole 21 is provided on the mounting portion 2, and when the lens is installed, the lens is fixed in the vehicle lamp by screws cooperating with the threaded through hole 21; in this embodiment, a through groove 22 penetrating the mounting portion 2 is provided on the hole wall of the threaded through hole 21, and the through groove 22 separates the hole wall of the threaded through hole 21, that is, an opening (through groove 22) is provided on the side wall of the mounting portion 2, and when the lens is installed (i.e., the process of screwing the screw into the threaded through hole 21), such a setting can release stress and avoid cracking of the mounting portion 2 (threaded through hole 21). In this embodiment, the groove width of the through groove 22 gradually increases in the axial direction of the threaded through hole 21, and the through groove 22 includes a first groove section 221 and a second groove section 222 adjacent to each other, the groove wall of the connected first groove section 221 and the groove wall of the second groove section 222 are not coplanar (an angle not equal to 180° is formed between the two connected groove walls), the groove width dimension of the end of the first groove section 221 away from the second groove section 222 is d1㎜, the groove width dimension of the connection between the first groove section 221 and the second groove section 222 is d2㎜, and the groove width dimension of the end of the second groove section 222 away from the first groove section 221 is d3㎜, satisfying: d3>d2>d1. The widths of the first groove section 221 and the second groove section 222 gradually increase in the direction from the first groove section 221 to the second groove section 222, and the groove width of the second groove section 222 is greater than the groove width of the first groove section 221. This arrangement can prevent the mounting portion 2 (threaded through hole 21) from cracking and can also prevent the lens (threaded through hole 21) from being pulled during demolding (specifically, as shown in FIG. Fig.11 and Fig.14 As shown, when the lens is demolded, the mold needs to be pulled out of the through groove 22. The two sides of the mold will exert relative friction on the groove walls on both sides of the through groove 22. When the relative friction is large enough, the groove walls of the through groove 22 will be driven to move. When the groove walls on both sides are subjected to unequal forces, the two sides of the through groove 22 will be misaligned. When the groove walls on both sides are subjected to equal forces, the two sides of the through groove 22 will be displaced along the demolding direction. Both situations will cause the lens to be strained. The specific demolding direction is, for example, Fig.11 In the perspective, the mold moves upward to demold the lens. In the present application, the first groove section 221 and the second groove section 222 have an angle between their same-side groove walls. At this time, the groove walls of the first groove section 221 and the second groove section 222 connected to the mold respectively have an angle with the relative friction forces f1 and f2, so that part of the two friction forces f1 and f2 are offset and the combined force is reduced, thereby reducing the probability of the product being pulled when demolding), and also improving the product yield and reducing production costs.

[0127] It should be noted that, in one embodiment, in the axial direction of the threaded through hole 21, the mounting portion 2 has two oppositely disposed surfaces, namely, a first surface 23 and a second surface 24. Taking the first surface 23 as a reference, the groove wall slope of the first groove segment 221 connected on the same side is greater than the groove wall slope of the second groove segment 222, that is, the first groove segment 221 is steeper than the second groove segment 222. Fig.13 The groove wall on the right side of the through groove 22 shown in the figure, the groove wall of the second groove section 222 is more inclined to the right side than the groove wall of the first groove section 221; Fig.13 The groove wall on the left side of the middle through groove 22 is not specifically limited in this embodiment, as long as it does not interfere with the upward demolding operation of the mold. For example, in this embodiment, the groove wall slope of the first groove section 221 on the left side is smaller than the groove wall of the second groove section 222, and the groove wall of the second groove section 222 is perpendicular to the top surface of the mounting portion 2. In some embodiments, the groove wall slope of the first groove section 221 on the left side may also be greater than the groove wall of the second groove section 222.

[0128] It should also be noted that when an object is deformed due to external factors, internal forces interacting with each other are generated between the parts of the object. The internal force per unit area is called stress. In this embodiment, the external factor is the squeezing force of the screw on the threaded through hole 21 when the screw and the threaded through hole 21 are matched. The through groove 22 is provided to avoid cracking of the mounting portion 2 due to excessive stress. The width of the first groove section 221 and the width of the second groove section 222, i.e., the lateral width of the through groove 22 ( Fig.13 In addition, it should be noted that, in the present embodiment, the slot width of the through slot 22 gradually increases linearly, that is, the slot wall of the through slot 22 is arranged in a plane, and the following embodiments are all described by taking the slot wall of the through slot 22 arranged in a plane as an example; in some embodiments, the slot width of the through slot 22 gradually increases nonlinearly, for example, the slot width increases firstly and then decreases in the direction from the first slot section 221 to the second slot section 222, and in this way, the slot wall of the through slot 22 is arranged in a concave curved surface, or in some embodiments, the increase is firstly small and then large, and the slot wall of the through slot 22 is arranged in a convex curved surface, and it is not limited thereto.

[0129] See also Fig.12 In one embodiment, the through slot 22 has a symmetric reference plane (eg Fig.12 The first slot section 221 has two first walls 2211 arranged opposite to each other, and the second slot section 222 has two second walls 2222 arranged opposite to each other. The two first walls 2211 are symmetrically arranged on both sides of the symmetrical reference plane, and the two second walls 2222 are symmetrically arranged on both sides of the symmetrical reference plane, that is, the through slot 22 is symmetrically arranged relative to the symmetrical reference plane; the angle between the first wall 2211 and the symmetrical reference plane is α, and the angle between the second wall 2222 and the symmetrical reference plane is β (as shown in the middle plane λ, the same below), the first slot section 221 has two first walls 2211 arranged opposite to each other, and the second slot section 222 has two second walls 2222 arranged opposite to each other, the two first walls 2211 are symmetrically arranged on both sides of the symmetrical reference plane, and the two second walls 2222 are symmetrically arranged on both sides of the symmetrical reference plane, that is, the through slot 22 is symmetrically arranged relative to the symmetrical reference plane; the angle between the first wall 2211 and the symmetrical reference plane is α, and the angle between the second wall 2222 and the symmetrical reference plane is β (as shown in the middle plane λ, the same below), the first slot section 221 has two first walls 2211 arranged opposite to each other, and the second wall 2222 has two second walls 2222 arranged opposite to the symmetrical reference plane Fig.12As shown, in order to facilitate the representation of angles α and β in the figure, two surfaces parallel to the symmetry reference plane intersect with the first wall 2211 and the second wall 2222 to obtain α and β), respectively, satisfying: β>α. The through groove 22 is symmetrically arranged relative to the symmetry reference plane, which is beneficial to the design of the lens mold and effectively improves the uniformity of force when the screw is connected to the threaded through hole 21.

[0130] It should be noted that, in this embodiment, the slope of the first wall 2211 connected on the same side is greater than the slope of the second wall 2222, and the groove walls on both sides of the through groove 22 (i.e., the first wall 2211 and the second wall 2222) are all set in this way. When β>α, the opening degree of the second groove section 222 is greater than the opening degree of the first groove section 221, that is, the groove width of the first groove section 221 is smaller than the groove width of the second groove section 222. The first groove section 221 with a smaller groove width can release stress to avoid lens cracking, while ensuring the tight connection between the screw and the threaded through hole 21, ensuring the stability of the lens installation, and the second groove section 222 with a larger groove width can avoid the two sides of the through groove 22 from being strained when the lens is demoulded.

[0131] See also Fig.12 In one embodiment, 1°≤α≤5°, 5°≤β≤15°, β>α, α is, for example, 1°, 2°, 3°, 4°, 5°, etc., β is, for example, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, etc. In this way, within the above value range, the arrangement of the first groove section 221 and the second groove section 222 can not only ensure the stability of the connection between the lens and the heat sink surface (the lens will not fall off from the connection with the heat sink), but also ensure that the two sides of the through groove 22 will not be strained during demoulding, and can also release stress to avoid cracking of the lens.

[0132] The performance of the technical solution provided in the embodiments of the present application is evaluated in conjunction with specific embodiments.

[0133] It should be noted that 20 samples were tested for each angle of the following embodiments. The screws were tightened in the threaded through hole 21 of the lens by automatic tightening and manual tightening, so as to form a comparison; the tightening torque when the screws were tightened automatically was 0.8Nm and the speed was 200LPM; the tightening torque when the screws were tightened manually was 1.2Nm and the speed was 500LPM. Observe whether the samples with different angles are cracked (visual inspection), and conduct a vibration test on the lens to record whether the lens falls off (visual inspection). Specific parameters and test results are detailed in Table 1.

[0134] Table 1

[0135]

[0136] It should be noted that, as can be seen from Table 1, the above table provides embodiments in which α is 1°, 2°, 3°, 4°, and 5°, and a comparative example in which α is 6°, and each α value corresponds to an embodiment in which β is 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, and 15°, and a comparative example in which β is 2°, 3°, 4°, and 16°; wherein, "×" in the table indicates that the product cannot be prepared, and "√" in the table indicates that the lenses have passed the cracking test and the vibration test, and no lens in the sample has cracked or fallen off. In addition, it can be seen from the table that when the values ​​of α and β are small, the actual product will be strained, and the lens will also crack; when the values ​​of α and β are large, the lens will fall off during the vibration test, resulting in a fixation failure (i.e., the connection between the screw and the threaded through hole 21 fails). When the values ​​of α and β are within the above range, the effect is best. The setting of the first groove section 221 and the second groove section 222 can not only ensure the stability of the lens connection (the lens will not fall off from the connection with the heat sink), but also ensure that the two sides of the through groove 22 will not be strained during demolding, and at the same time release stress to avoid cracking of the lens.

[0137] Optionally, α=3°, β=10°, the difference between α and β is moderate, and the yield rate in the lens production process is high; when the difference between α and β is small, that is, the first wall 2211 and the second wall 2222 are more inclined to be coplanar, at this time, the resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold will be larger (the friction force f1 of the mold relative to the first wall 2211 and the friction force f2 of the mold relative to the second wall 2222 are more inclined to be colinear during demolding, and the resultant force is larger at this time), and the actual product is more prone to scratches, which reduces the yield rate; when the difference between α and β is large, the first wall 2211 and the second wall 2222 are more inclined to be coplanar, and the resultant force between the first wall 2211 and the second wall 2222 and the mold will be larger. 22, the relative friction force between the first wall 2211 and the second wall 2222 and the mold will be smaller (there is an angle between the friction force f1 of the mold on the first wall 2211 and the friction force f2 of the mold on the second wall 2222 during demolding, and some of the components will be offset, that is, the resultant force is smaller at this time), which can be more conducive to smooth demolding, but the difference between α and β is large, and the tightening force of the screw on the threaded through hole 21 is insufficient. After the lens is installed, it will be more prone to vibration and fall off than when the difference between α and β is moderate. Therefore, the difference between α and β is moderate, and the yield rate in the lens production process is higher. It can ensure the stability of the connection between the lens and the radiator (the lens will not fall off from the connection with the radiator), and it can also ensure that the two sides of the through groove 22 will not be strained during demolding.

[0138] In one embodiment, 0.5≤d1≤1.1, 0.9≤d2≤1.5, 1.2≤d3≤2.0; it has been verified that when d1, d2, and d3 are within this range, the stability of the lens connection (the lens will not fall off from the connection with the heat sink) can be ensured, and both sides of the through groove 22 will not be strained during demolding. Preferably, d1=0.8, d2=1.2, and d3=1.6.

[0139] See also Fig.15 In one embodiment, in the axial direction of the threaded through hole 21, the mounting portion 2 has two oppositely disposed surfaces, namely a first surface 23 and a second surface 24, and the first surface 23 intersects with the first groove section 221, that is, the first surface 23 is the bottom surface of the mounting portion 2 ( Fig.11 , Fig.15 perspective); the first slot section 221 has two first walls 2211 arranged opposite to each other, and the second slot section 222 has two second walls 2222 arranged opposite to each other; the angle between the first wall 2211 and the first surface 23 is δ, and the angle between the second wall 2222 and the second surface 24 is γ, satisfying: δ+γ>180°.

[0140] It should be noted that from Fig.15 It can be seen that the angle between the first wall 2211 and the second wall 2222 is θ. When δ+γ>180°, it can be seen that θ<180°( Fig.15 The mounting portions 2 on both sides of the through slot 22 are pentagonal in perspective, and the sum of their internal angles is 540°. It can be seen that when δ+γ>180°, θ<180° after removing the two right angles of 90°); in this way, the opening of the second slot segment 222 is greater than the opening of the first slot segment 221 (that is, the slot wall slope of the first slot segment 221 connected on the same side as shown in the figure is greater than the slot wall slope of the second slot segment 222), and the top of the second wall 2222 is more biased to the left than the top of the first wall 2211 ( Fig.15 The first wall 2211 and the second wall 2222 on the left side in the viewing angle, that is, the groove width of the first groove section 221 is smaller than the groove width of the second groove section 222. The first groove section 221 with a smaller groove width can release stress to avoid lens cracking, while ensuring the tight connection between the screw and the threaded through hole 21 to ensure the stability of the lens installation. The second groove section 222 with a larger groove width can avoid strain on both sides of the through groove 22 when the lens is demolded.

[0141] In one embodiment, 85°≤δ≤89°, 95°≤γ≤105°, δ+γ>180°, δ is, for example, 85°, 86°, 87°, 88°, 89°, etc., and γ is, for example, 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, 105°, etc. In this way, within the above value range, the arrangement of the first groove section 221 and the second groove section 222 can ensure the stability of the lens connection (the lens will not fall off from the connection with the heat sink), and can ensure that the two sides of the through groove 22 will not be strained during demoulding, and can also release stress to avoid cracking of the lens.

[0142] The performance of the technical solution provided in the embodiments of the present application is evaluated in conjunction with specific embodiments.

[0143] It should be noted that 20 samples were tested for each angle of the following embodiments. The screws were tightened in the threaded through hole 21 of the lens by automatic tightening and manual tightening, so as to form a comparison; the tightening torque when the screws were tightened automatically was 0.8Nm and the speed was 200LPM; the tightening torque when the screws were tightened manually was 1.2Nm and the speed was 500LPM. Observe whether the samples with different angles are cracked (visual inspection), and conduct a vibration test on the lens to record whether the lens falls off (visual inspection). Specific parameters and test results are detailed in Table 2.

[0144] Table 2

[0145]

[0146]

[0147] It should be noted that, as can be seen from Table 2, the above table provides embodiments where δ is 85°, 86°, 87°, 88°, and 89°, and a comparative example where α is 84°, and each δ value corresponds to an embodiment where γ is 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, and 105°, and a comparative example where β is 92°, 93°, 94°, and 106°; wherein, "×" in the table indicates that the product cannot be prepared, and "√" in the table indicates that the lenses have passed the cracking test and the vibration test, and no lens has cracked or fallen off in the sample. In addition, it can be seen from the table that when the value of δ is large and the value of γ is small, the actual product will be strained, and the lens will also crack; when the value of δ is small and the value of γ is large, the lens will fall off during the vibration test, resulting in a fixation failure (i.e., the connection between the screw and the threaded through hole 21 fails). When the values ​​of δ and γ are within the above range, the effect is best. The setting of the first groove section 221 and the second groove section 222 can not only ensure the stability of the lens connection (the lens will not fall off from the connection with the heat sink), but also ensure that the two sides of the through groove 22 will not be strained during demolding, and at the same time release stress to avoid cracking of the lens.

[0148] Optionally, δ=87°, γ=100°, the difference between δ and γ is moderate, and the yield rate in the lens production process is high; when the difference between δ and γ is small, that is, the first wall 2211 and the second wall 2222 are more inclined to be coplanar (such as Fig.15 The groove wall on the left side of the middle, the difference between δ and γ is small, that is, δ≈γ), at this time, the resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold will be larger (the friction f1 of the mold relative to the first wall 2211 and the friction f2 of the mold relative to the second wall 2222 tend to be collinear during demolding, and the resultant force is larger at this time), and the actual product is relatively more prone to scratches, reducing the yield rate; when the difference between δ and γ is large, there is a certain angle between the first wall 2211 and the second wall 2222, at this time, the first wall 2211 and the second wall 2 The resultant force of the relative friction forces between 222 and the mold will be smaller (when demolding, there is a large angle between the friction force f1 of the mold on the first wall 2211 and the friction force f2 of the mold on the second wall 2222, and some of the components of force will be offset, that is, the resultant force is smaller at this time). Although it can be more conducive to smooth demolding, the difference between δ and γ is large, and the tightening force of the screw on the threaded through hole 21 is insufficient. After the lens is installed, it will be more likely to vibrate and fall off than when the difference between δ and γ is moderate. Therefore, the difference between δ and γ is moderate, and the yield rate of the lens in the production process is higher.

[0149] See also Fig.12In one embodiment, the angle between the first wall 2211 and the second wall 2222 is θ, which satisfies: 166°≤θ<180°. It has been verified that when the value of θ is within this range, it can not only ensure the stability of the lens connection (the lens will not fall off from the connection with the heat sink), but also ensure that the two sides of the through groove 22 will not be strained during demolding. Preferably, θ=173°.

[0150] It should be noted that when θ=173°, that is, the angle between the first wall 2211 and the second wall 2222 is neither too large (approaching 180°) nor too small (approaching 166°). When θ is too large, the first wall 2211 and the second wall 2222 are more likely to be coplanar. At this time, the resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold is larger (the friction force of the mold relative to the first wall 2211 and the friction force of the mold relative to the second wall 2222 are more likely to be colinear during demolding, and the resultant force is larger at this time). The actual product is more likely to be scratched relative to θ=173°, which reduces the yield rate. When θ is too small, the first wall 2211 and the second wall 2222 are more likely to be coplanar. The resultant force of the relative friction between the first wall 2211 and the second wall 2222 and the mold will be smaller (there is an angle between the friction between the mold and the first wall 2211 and the friction between the mold and the second wall 2222 during demolding, and some of the components will be offset, that is, the resultant force is smaller at this time). Although it can be more conducive to smooth demolding, θ is too small, that is, the greater the difference in slope between the first wall 2211 and the second wall 2222 on the same side, the larger the opening of the second groove section 222, and the insufficient tightening force of the screw on the threaded through hole 21. After the lens is installed, it will be more likely to vibrate and fall off than when θ=173°. Therefore, θ=173° has a higher yield rate in the lens production process. It can ensure the stability of the lens connection (the lens will not fall off from the connection with the radiator), and it can also ensure that the two sides of the through groove 22 will not be strained during demolding.

[0151] See also Fig.11 In one embodiment, the body 1 of the second lens 32 has a light incident surface 1-1 and a light emitting surface 1-2 disposed opposite to each other, and two mounting portions 2 are provided. The two mounting portions 2 are disposed on the surface of the light incident surface 1-1 and are respectively located at two ends of the light incident surface 1-1 along the third direction.

[0152] Since in the above scheme, when multiple first lenses 31 are arranged side by side along the third direction, the side lens 31a converges the light output direction toward the side lens 31a on the other side, and the light is emitted from the light output surface of the side lens 31a and then emitted obliquely forward, and will not illuminate the area directly in front of the side lens 31a, the mounting portion 2 can be set on the light input surface 1-1 of the second lens 32 in the partial area corresponding to the area directly in front of the side lens 31a (that is, set on the surface of the light input surface 1-1 at both ends of the second lens 32 along the third direction), which will not affect the light emitted by the side lens 31a entering the second lens 32 through the light input surface 1-1. Therefore, in this embodiment, it is not necessary to set the mounting portion 2 on the outer end facades at both ends of the second lens 32 along the third direction, and it can also reduce the space occupied by the entire second lens 32 in the length direction of the light input surface 1-1, which is conducive to the arrangement of other components inside the headlight.

[0153] It should be noted that the mounting portion 2 is at least partially disposed on the light incident surface 1 - 1 , and the relative positions of the two are designed according to the actual product. Fig.11 Only the mounting portion 2 at one end of the second lens 32 along the third direction is illustrated.

[0154] In one embodiment, in the axial direction of the threaded through hole 21, the mounting portion 2 has two surfaces arranged opposite to each other, namely a first surface 23 and a second surface 24. The first surface 23 intersects with the first groove section 221, that is, the first surface 23 is the bottom surface of the mounting portion 2 ( Fig.11 , Fig.12 In the present embodiment, the first surface 23 is perpendicular to the light incident surface 1-1. Such a configuration can limit the angle at which the lens is installed in the headlight. When installing the lens, the first surface 23 is brought into contact with the mounting surface on the heat sink for installation, and then the screws are tightened and fixed. Because the first surface 23 is perpendicular to the light incident surface 1-1, after the lens is installed, the angle of the light incident surface 1-1 relative to the headlight is limited, the structure is simple, and the use is convenient; and the first surface 23 is perpendicular to the light incident surface 1-1, which is conducive to the processing and molding of the mold, and also facilitates the smooth demolding of the lens after production.

[0155] It should be noted that, in some embodiments, the first surface 23 and the light incident surface 1 - 1 may be arranged in a non-vertical manner, which can be set according to the required installation angle of the lens relative to the vehicle lamp.

[0156] See also Fig.11In one embodiment, the lens further includes a stabilizing portion 3, which is disposed on the opposite sides of the two mounting portions 2, and in the axial direction of the threaded through hole 21, the stabilizing portion 3 extends and protrudes from the second surface 24. By disposing the stabilizing portion 3, the stability between the mounting portion 2 and the main body can be enhanced, the stability of the lens after installation is ensured, and the stability of the light can be ensured, which effectively improves the use effect of the headlight; in addition, the stabilizing portion 3, the main body and the mounting portion 2 will enclose an installation space ( Fig.11 When installing the lens, an operating space is provided for tightening the screws. When installing the screws, the screws will inevitably fall from the screwdriver or other tightening tools. By setting the above-mentioned installation space, the screws can be separated from the light incident surface 1-1, that is, the screws that fall when installing the screws will not scratch the light incident surface 1-1, and will not affect the optical performance of the light incident surface 1-1 (the second lens), and the structure is simple. In addition, the screws that fall during installation will preferentially fall into the above-mentioned installation space, which can prevent the screws from falling into the car light, avoiding scratches on the car light, and are more convenient to remove than the screws that fall into the interior of the car light.

[0157] It should be noted that, in some embodiments, in order to further prevent the screw from falling from the top of the mounting portion 2 to other places, an upward ( Fig.11 The convex portion 26 protrudes from the second surface 24, but is not limited thereto. In addition, in some embodiments, the stabilizing portion 3 also extends downward ( Fig.11 The stabilizing portion 3 extends from the mounting portion 2 to the main body, further strengthening the stable connection between the mounting portion 2 and the main body. A space is also formed below the mounting portion 2. When the lens is mounted on the mounting surface of the headlight, the downwardly extending portion of the stabilizing portion 3 can confine the lens on the headlight (when the mounting portion 2 is mounted on the mounting surface or mounting base of the headlight, the stabilizing portions 3 on both sides are clamped between the mounting bases on both sides, thereby limiting the position of the lens in its length direction), ensuring the stability of the lens before tightening the screws and enabling positioning of the installation position of the threaded through hole 21.

[0158] In one embodiment, the mounting portion 2 is further provided with a positioning through hole 25, which is used to locate the installation position of the threaded through hole 21. In actual products, a latch is provided at the position for mounting the lens on the headlight. When the lens is mounted, the latch is inserted into the positioning through hole 25, and the threaded through hole 21 is just at its installation position. The structure is simple, and the installation efficiency of the lens is effectively improved.

[0159] By adopting the technical solution provided in the embodiment of the present application, a through groove 22 is provided on the hole wall of the threaded through hole 21, and the through groove 22 passes through the mounting portion 2, so that the stress when the screw is tightened can be released, thereby avoiding cracking of the mounting portion 2 (threaded through hole 21); the through groove 22 includes a first groove section 221 and a second groove section 222 adjacent to each other, the groove wall of the connected first groove section 221 and the groove wall of the second groove section 222 are not coplanar, and the groove widths of the first groove section 221 and the second groove section 222 gradually increase in the direction from the first groove section 221 to the second groove section 222, and the groove width of the second groove section 222 is greater than the groove width of the first groove section 221. Such a setting avoids cracking of the mounting portion 2 (threaded through hole 21) and can also avoid damage to the lens (threaded through hole 21) during demolding, thereby improving the product yield and reducing production costs.

[0160] In the prior art, stray light is easily generated around the side of the headlight, thereby affecting the uniformity and other optical properties of the headlight.

[0161] In order to solve the above problems, a lens solution provided in one embodiment of the present application includes a main body and a light-transmitting protrusion, wherein the main body has a light incident surface and a light emitting surface arranged opposite to each other; at least one of the light-transmitting protrusions is arranged on the peripheral side of the light emitting surface; wherein, after the light passes through the light emitting surface, an irradiation area is formed on the side of the light emitting surface away from the light incident surface; the light-transmitting protrusion has a refractive surface to refract part of the light incident from the side of the light incident surface and emit it in a direction away from the irradiation area. By arranging the light-transmitting protrusion on the peripheral side of the light emitting surface, part of the light incident from the light incident surface (the light not used to form the irradiation area, i.e., stray light) is refracted by the refractive surface and emitted in a direction away from the irradiation area; the stray light is refracted into the space outside the irradiation area, which effectively improves the uniformity of the light from the car lamp. The lens structure is described in detail below using the first lens as an example.

[0162] See also Fig.16 , 20 and Fig.21In one embodiment, the first lens 31 includes a main body 11 and a light-transmitting protrusion 13. The main body 11 has a light-entering surface 111 and a light-emitting surface 112 that are arranged opposite to each other. The light-transmitting protrusion 13 is arranged around the light-emitting surface 112. After the light passes through the light-emitting surface 112, an irradiation area 50 is formed on the side of the light-emitting surface 112 away from the light-entering surface 111. The light-transmitting protrusion 13 has a refractive surface 131. The refractive surface 131 refracts part of the light incident from the side of the light-entering surface 111 (the light that is not used to form the irradiation area 50, i.e., the stray light) toward a direction away from the irradiation area 50. The light-transmitting protrusion 13 is arranged around the light-emitting surface 112, and can refract the stray light at the edge of the lens (the light-emitting surface 112) into the space outside the irradiation area 50, thereby improving the uniformity of the light of the vehicle lamp. By setting the refractive surface 131, the angle of refraction of the stray light can be controlled, and can be adjusted according to factors such as different lens structures and different incident light, and the structure is simple.

[0163] It should be noted that at least one light-transmitting protrusion 13 is provided on the peripheral side of the light-emitting surface 112. Different numbers of light-transmitting protrusions 13 are provided according to the specific structure of the vehicle lamp. The light-transmitting protrusions 13 can be provided on multiple sides of the light-emitting surface 112 to ensure that the light-transmitting protrusions 13 can refract unnecessary light (stray light) out of the irradiation area 50. In the present embodiment, the lens is in the shape of an elongated strip, and a light-transmitting protrusion 13 is provided on both sides of the length direction of the lens (main body 11), and the light-emitting surface 112 is formed between the two light-transmitting protrusions 13. In addition, in the present embodiment, the light-transmitting protrusion 13 and the main body 11 are integrally provided, and can be formed by injection molding. In some embodiments, the light-transmitting protrusion 13 and the main body 11 can also be separately provided, and can be fixed by bonding or the like, but is not limited to this.

[0164] See also Fig.21 In one embodiment, the light incident surface 111 includes a first photon incident surface 1111 and a second photon incident surface 1112, the second photon incident surface 1112 is arranged on the peripheral side of the first photon incident surface 1111, and the light forms an irradiation area 50 after passing through the first photon incident surface 1111, and the orthographic projection of the refractive surface 131 on the plane where the light exiting surface 112 is located borders or partially overlaps with the orthographic projection of the first photon incident surface 1111 on the plane where the light exiting surface 112 is located. Such an arrangement can ensure that all the light incident from the second photon incident surface 1112 can be refracted by the refractive surface 131 and then emitted in a direction away from the irradiation area 50, effectively removing stray light and improving the uniformity of the light emitted from the light exiting surface 112.

[0165] It should be noted that, in some embodiments, by adjusting the left and right sides ( Fig.21By adjusting the spacing between the light-transmitting protrusions 13 according to the viewing angle, the size of the light-emitting surface 112 is adjusted to adjust the size of the irradiated area 50. While being able to achieve the setting of the headlights with different lighting requirements, the stray light can be removed by setting the refractive surface 131 to improve the uniformity of the light emitted from the light-emitting surface 112. In addition, in the present embodiment, the orthographic projection of the refractive surface 131 on the plane where the light emitting surface 112 is located can cover the orthographic projection of the second photon incident surface 1112 on the plane where the light emitting surface 112 is located. Such a setting can ensure that all light incident from the second photon incident surface 1112 (light not used to form the irradiation area 50) is refracted by the refractive surface 131 and emitted in a direction away from the irradiation area 50; in some embodiments, the orthographic projection of the refractive surface 131 on the plane where the light emitting surface 112 is located covers part of the orthographic projection of the second photon incident surface 1112 on the plane where the light emitting surface 112 is located, and the light incident from the uncovered second photon incident surface 1112 can be blocked by a bracket (a bracket for lens installation) to achieve the removal of stray light and also ensure the optical performance of the car lamp.

[0166] See also Fig.21 In one embodiment, in a direction perpendicular to the light emitting surface 112, the distance between the second photon incident surface 1112 and the light emitting surface 112 is smaller than the distance between the first photon incident surface 1111 and the light emitting surface 112, that is, the main body 11 is thick in the middle and thin at both ends ( Figure 6 Such an arrangement can avoid interference between the main body 11 and the bracket when the main body 11 of the first lens 31 is installed on the bracket, thereby improving assembly efficiency.

[0167] See also Fig.17 and Fig.18In one embodiment, the angle between the refractive surface 131 and the light emitting surface 112 is α, which satisfies: 30°≤α≤80°, for example, 30°, 40°, 50°, 60°, 70°, 80°, etc. When the value of α is less than 30°, the refractive surface 131 is nearly parallel to the light emitting surface 112, and the light (stray light) refracted by the refractive surface 131 cannot move away from the irradiation area 50 at a large angle (that is, some light will be refracted by the refractive surface 131 and be relatively close to the edge of the irradiation area 50), which is not conducive to the uniformity of the overall light; when the value of α is greater than 80°, the refractive surface 131 is nearly perpendicular to the light emitting surface 112. At this time, the orthographic projection area of ​​the refractive surface 131 on the plane where the light emitting surface 112 is located is small, that is, the refractive surface 131 cannot cover more stray light, and when the value of α is greater than 80°, it is not conducive to demolding during injection molding, the interaction force between the refractive surface 131 and the mold bracket is large, which is not conducive to improving production efficiency, and the part (first lens) may be torn during the demolding process. It has been verified that when 30°≤α≤80°, α=40° is preferred, which can ensure that the refractive surface 131 has a good refractive effect on stray light (large angle away from the irradiation area 50), and can ensure that the refractive surface 131 can refract stray light over a larger area, while also ensuring smooth demolding during the injection molding process, thereby effectively improving production efficiency and product yield.

[0168] See also Fig.17 and Fig.18 In one embodiment, in a direction perpendicular to the light emitting surface 112, the maximum distance between the refractive surface 131 and the light emitting surface 112 (i.e. Fig.18 In the viewing angle, the height of the light-transmitting protrusion 13 is h mm, which satisfies: 1≤h≤5, such as 1, 2, 3, 4, 5, etc. When the value of h is less than 1, the height of the light-transmitting protrusion 13 is too low, which is not conducive to processing and molding, and when the value is less than 1, the area of ​​the corresponding refractive surface 131 will also become smaller, and more stray light cannot be covered; when the value of h is greater than 5, the height of the light-transmitting protrusion 13 is too high, which will occupy the top of the lens ( Fig.18 It has been verified that when 1≤h≤5, the refractive surface 131 can refract stray light of a larger area, while avoiding occupying the space at the top of the lens, which is beneficial to the design of the headlight structure.

[0169] See also Fig.19 In one embodiment, the refractive surface 131 has a first refractive sub-surface 1311 and a second refractive sub-surface 1312 adjacent to each other, the second refractive sub-surface 1312 is connected between the first refractive sub-surface 1311 and the main body 11, and the slope of the first refractive sub-surface 1311 is smaller than the slope of the second refractive sub-surface 1312.

[0170] It should be noted that the slope of the first refractive sub-surface 1311 is smaller than the slope of the second refractive sub-surface 1312, that is, the second refractive sub-surface 1312 is steeper than the first refractive sub-surface 1311, that is, the first refractive sub-surface 1311 is more inclined to the right ( Fig.19 With this arrangement, the light refracted by the refractive surface 131 can be refracted into two different areas respectively, and the stray light is dispersed in each area, that is, the light in a single area is less, which is conducive to reducing the temperature in the area and improving the service life of the lamp; at the same time, such an arrangement can be quickly demoulded, and at the same time, the light-transmitting protrusion 13 is avoided from being damaged during the demoulding process.

[0171] In some embodiments, the refractive surface 131 may also be provided as a convex or concave curved surface, which can ensure the refraction effect on stray light while not affecting demolding (if it is not an injection molding process, demolding operation does not need to be considered), but is not limited to this.

[0172] See also Fig.18 In one embodiment, the light-transmitting protrusion 13 further has a demoulding slope 132, and the demoulding slope 132 is connected between the refractive surface 131 and the light-emitting surface 112, and the angle between the demoulding slope 132 and the light-emitting surface 112 is β, which satisfies: 93°≤β≤95°, such as 90°, 94°, 95°, etc. When the value of β is less than 93°, the demoulding slope 132 and the light-emitting surface 112 are nearly perpendicular or form an acute angle therebetween, and the interaction force (friction force) between the demoulding slope 132 and the mold is relatively large, which is not conducive to the demoulding operation of the light-transmitting protrusion 13. Even when the demoulding slope 132 and the light-emitting surface 112 form an acute angle therebetween, the surface of the light-transmitting protrusion 13 may be damaged during the demoulding process, thereby reducing the yield rate; when the value of β is greater than 95°, the demoulding slope 132 is inclined along the lateral direction ( Fig.18 The distance between the angle of view and the angle of view is too large (when the height of the light-transmitting protrusion 13 remains unchanged), which will occupy the area of ​​the light-emitting surface 112, which is not conducive to the design of the car lamp. It has been verified that when 93°≤β≤95°, it can ensure the smooth demoulding process and improve the yield rate, while not occupying the area of ​​the light-emitting surface 112, which is conducive to the structural design of the car lamp.

[0173] See also Fig.16 and Fig. 20On the other hand, the first lens 31 of the present application is fixedly disposed on the reflective component 10. Specifically, the first lens 31 also includes a mounting portion 12, and the mounting portion 12 is disposed on two opposite sides of the main body 11, and is fixedly mounted with the reflective component 10 through the mounting portion 12; the mounting portion 12 is horizontally disposed on the mounting support surface of the reflective component 10, so that the light incident surface 111 is opposite to the reflection area of ​​the reflective component 10. In this embodiment, the light incident surface 111 includes a first photon incident surface 1111 and a second photon incident surface 1112, and the second photon incident surface 1112 is disposed on the peripheral side of the first photon incident surface 1111. After the light passes through the first photon incident surface 1111, an irradiation area 50 is formed. In a direction perpendicular to the light emitting surface 112, the distance between the second photon incident surface 1112 and the light emitting surface 112 is smaller than the distance between the first photon incident surface 1111 and the light emitting surface 112, that is, the main body 11 is thick in the middle and thin at both ends ( Fig.21 Such a configuration can avoid the first photon incident surface 1111 lateral ( Fig.21 Both ends of the main body 11 (viewing angle) interfere with the reflective component 10, that is, an installation gap 70 is formed between the main body 11 and the reflective component 10, thereby improving the assembly efficiency.

[0174] It should be noted that the mounting portion 12 and the reflective component 10 are positioned and fixed by a positioning structure 60, and the positioning structure 60 includes a positioning block 61, a positioning groove 62 and a welding protrusion 63. In this embodiment, the positioning block 61 is arranged on the mounting support surface of the reflective component 10, and the positioning groove 62 is arranged on the mounting portion 12. The positioning block 61 is snapped into the positioning groove 62 to locate the relative position between the first lens 31 and the reflective component 10, thereby improving the assembly accuracy and assembly efficiency; after the positioning block 61 and the positioning groove 62 are matched, the first lens 31 is positioned on the reflective component 10. At this time, the welding protrusion 63 is melt-welded from the side of the mounting portion 12 away from the reflective component 10 (transparent material in this embodiment) by laser welding (using laser as energy to melt materials to achieve welding between materials) to achieve the fixation of the first lens 31 and the reflective component 10.

[0175] In some embodiments, the positioning groove 62 can be set on the mounting support surface of the reflective component 10, the positioning block 61 is set on the mounting portion 12, and the positioning block 61 can be wedge-shaped, which has a positioning function and a guiding function at the same time, and can guide the positioning block 61 to the positioning groove 62 for positioning. The structure is simple and the assembly efficiency is further improved. In addition, in some embodiments, the positioning structure 60 can also be set in other forms, and the fixation between the first lens 31 and the reflective component 10 can also be other forms of fixation, such as glue bonding, etc., but not limited to this.

[0176] See also Fig.21In one embodiment, the mounting portion 12 has a first surface 121 and a second surface 122 in a direction perpendicular to the light emitting surface 112, and the first surface 121 is disposed above the second surface 122 ( Fig.21 When the mounting portion 12 is also made of a light-transmitting material, it can be injection molded together with the main body 11, and the first surface 121 is flush with the light-emitting surface 112, which can reduce the difficulty of processing the mold itself. In some embodiments, the first surface 121 can also be protruding from the light-emitting surface 112, or the first surface 121 can be set between the light-emitting surface 112 and the light-incident surface 111, which is set according to the actual installation structure and is not limited to this.

[0177] See also Fig.18 In one embodiment, the light incident surface 111 includes a first photon incident surface 1111 and a second photon incident surface 1112, and the second photon incident surface 1112 is arranged on the peripheral side of the first photon incident surface 1111. After the light passes through the first photon incident surface 1111, an irradiation area 50 is formed. The main body 11 also has a connecting surface 113, which is connected between the first photon incident surface 1111 and the second photon incident surface 1112, that is, the side surface of the main body 11. In this embodiment, the two ends of the main body 11 in the length direction are stepped (such as Fig.18 As shown in the figure, an installation gap 70 is formed between the connecting surface 113 and the reflecting component 10, and an assembly margin is reserved to improve the assembly efficiency; a leather grain structure 101 is provided at the portion of the reflecting component 10 opposite to the connecting surface 113. With such a configuration, part of the stray light can be reflected by the leather grain structure 101 after entering the installation gap 70, and the extinction effect (refracting the stray light and emitting it in a direction away from the irradiation area 50) can also be achieved.

[0178] The technical solution provided in the embodiment of the present application aims to provide a light-transmitting protrusion 13 on the peripheral side of the light-emitting surface 112 so that part of the light incident from the light-incident surface 111 (the light not used to form the illumination area 50, i.e., stray light) is refracted by the refractive surface 131 and emitted in a direction away from the illumination area 50; the stray light is refracted into the space outside the illumination area 50, thereby effectively improving the uniformity of the light from the car lamp.

[0179] On the other hand, the present application also relates to a vehicle lamp, comprising any one of the aforementioned lenses or optical modules.

[0180] The present application also provides a means of transport, comprising any of the above-mentioned headlights. The above-mentioned means of transport may be a car, a train, a high-speed train or other means of transport that requires headlights.

[0181] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0182] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An optical module, characterized in that: include: A light source, the light source being arranged at or near the light-emitting focus of the main reflecting surface; A reflective component, comprising the main reflective surface, wherein the main reflective surface comprises a root portion and a light-emitting end sequentially arranged along a main light-emitting direction; an imaging focus of the main reflective surface is located between the first lens and the second lens; A first lens is disposed in front of the reflective component along the main light emitting direction and is used to adjust the light in a first direction; as well as A second lens, for allowing the light transmitted through the first lens to pass through and adjusting the light in a second direction intersecting the first direction; Wherein, in the main light emitting direction of the optical module, the second focus of the second lens is located behind the root, and the first focus of the first lens is located in front of the second focus; With the mounting base as a reference, the middle portion of the root protrudes toward a second direction away from the mounting base and forms a curved structure of the root, or the distance between the middle portion of the root and the mounting base is greater than the distance between the side portion of the root and the mounting base.

2. An optical module according to claim 1, characterized in that: The first focus is located in the middle of the root of the reflecting component; in the main light emitting direction of the optical module, the second focus is located behind the root of the reflecting component, and the distance between the second focus and the first focus is 1-3 mm.

3. An optical module according to claim 2, characterized in that: The distance between the second focus and the first focus is 1.5-2 mm.

4. The optical module according to claim 1, characterized in that: A surface of the second lens on one side close to / far away from the first lens is a cylinder, and a normal of a plane where a directrix of the cylinder is located is perpendicular to the second direction; or a surface of the first lens on one side close to / far away from the second lens is a cylinder, and a normal of a plane where a directrix of the cylinder of the first lens is located is perpendicular to the first direction.

5. An optical module according to claim 4, characterized in that: The curvature radius of the cylindrical surface of the second lens is 900 mm to 1500 mm.

6. The optical module according to claim 1, characterized in that: There are multiple first lenses, which are arranged side by side in a third direction that forms an angle with the main light emitting direction, and the first lens close to the side is a side lens, and the converging light emitting direction of the side lens is toward the side lens on the other side and toward the front of the main light emitting direction.

7. The optical module according to claim 1, characterized in that: The reflective component further includes: a second dimming surface, which is arranged behind the main reflective surface along the main light emitting direction and close to the root of the main reflective surface, and is configured to receive the light transmitted to its surface and project it toward the rear of the main light emitting direction; Alternatively, the reflecting component also includes a blocking extinction surface, which is arranged behind the main reflecting surface along the main light emitting direction, and the blocking extinction surface and the main reflecting surface are arranged in sequence in the direction away from the mounting base surface; the blocking extinction surface is configured to block and at least partially absorb light projected onto the surface.

8. The optical module according to claim 7, characterized in that: Taking the mounting base as a reference, the height of a side edge of the second dimming surface away from the main reflection surface is greater than the height of a side edge of the second dimming surface close to the main reflection surface; the angle β between the second dimming surface and the mounting base is greater than or equal to 0° and less than or equal to 10°.

9. The optical module according to claim 1, characterized in that: The first lens comprises: A main body having a light incident surface and a light emitting surface arranged opposite to each other; and A light-transmitting protrusion, at least one of which is provided on the peripheral side of the light-emitting surface; After the light passes through the light emitting surface, an irradiation area is formed on the side of the light emitting surface away from the light incident surface; the light-transmitting protrusion has a refractive surface to refract part of the light incident from one side of the light incident surface and emit it in a direction away from the irradiation area.

10. The optical module according to claim 9, characterized in that: The light incident surface includes a first photon incident surface and a second photon incident surface, wherein the second photon incident surface is arranged on the peripheral side of the first photon incident surface, and the light forms the irradiation area after passing through the first photon incident surface; The orthographic projection of the refractive surface on the plane where the light-emitting surface is located borders on or partially overlaps with the orthographic projection of the first photon incident surface on the plane where the light-emitting surface is located.

11. The optical module according to claim 1, characterized in that: The second lens comprises: The entity; and A mounting portion, disposed on the body; Wherein, the mounting portion is provided with a threaded through hole, and the hole wall of the threaded through hole is provided with a through groove penetrating the mounting portion to separate the hole wall of the threaded through hole; the groove width of the through groove increases along the axial direction of the threaded through hole, and the through groove includes a first groove section and a second groove section adjacent to each other, and the groove walls of the connected first groove sections are not coplanar with the groove walls of the second groove sections; the groove width dimension of the end of the first groove section away from the second groove section is d1㎜, the groove width dimension of the connection between the first groove section and the second groove section is d2㎜, and the groove width dimension of the end of the second groove section away from the first groove section is d3㎜, satisfying: d3>d2>d1.

12. A vehicle lamp, characterized in that: The optical module comprises any one of claims 1-11.

13. A means of transport, characterized in that: The vehicle lamp comprising the vehicle lamp as claimed in claim 12.

Images