Light type adjusting component and optical module

Abstract

The invention discloses a light pattern adjusting part and an optical module, and the light pattern adjusting part comprises a first dimming surface which comprises a root part and a light emitting end which are sequentially arranged along a main light emitting direction, and is configured to receive part of light emitted by a light source and converge the light; and the second dimming surface is arranged behind the first dimming surface in the main light emitting direction, is close to the root of the first dimming surface, and is configured to receive the light transmitted to the surface of the second dimming surface and project the light towards the rear part in the main light emitting direction.

Description

Technical Field

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

[0002] With the continuous development of automotive lighting technology, the performance and reliability of headlight modules, as key components for safe driving of vehicles, are increasingly valued. However, in traditional headlight modules, LED light sources are often accompanied by stray light and overheating risks after being reflected by reflectors, which not only affects the lighting effect, but also reduces the safety and service life of the entire vehicle. Summary of the invention

[0003] In order to solve the above problems, the technical solutions adopted in the embodiments of the present application are as follows:

[0004] The present application discloses a light pattern adjustment component, comprising:

[0005] The first dimming surface includes a root portion and a light emitting end sequentially arranged along the main light emitting direction, and is configured to receive part of the light emitted by the light source and converge the light;

[0006] The second dimming surface is arranged behind the first dimming surface along the main light emitting direction and close to the root of the first dimming surface, and is configured to receive light transmitted to its surface and project it toward the rear of the main light emitting direction.

[0007] In some embodiments, a projection dimension L1 of the second dimming surface on a longitudinal section extending along the main light emitting direction is 1 mm-8 mm; or, along the main light emitting direction, a distance between the root and a side edge of the second dimming surface away from the first dimming surface is 1 mm-8 mm.

[0008] In some embodiments, along the main light emitting direction, a distance between a rear end of the root portion and a side edge of the second dimming surface away from the first dimming surface ranges from 1 mm to 5 mm.

[0009] In some embodiments, a side of the second dimming surface close to the first dimming surface is connected to the root.

[0010] In some embodiments, based on the mounting base, a height of a side edge of the second dimming surface away from the first dimming surface is greater than a height of a side edge of the second dimming surface close to the first dimming surface.

[0011] In some embodiments, an angle β between the second dimming surface and the mounting base surface is greater than or equal to 0° and less than or equal to 10°.

[0012] In some embodiments, the second dimming surface is a curved surface that is concave in a direction away from the mounting base surface.

[0013] In some embodiments, it also includes a blocking extinction surface, which is arranged behind the second dimming surface along the main light-emitting direction, and the blocking extinction surface and the first dimming 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 the light projected backward from the second dimming surface, and then reflect the light in a direction away from the second dimming surface.

[0014] In some embodiments, the angle α between the blocking extinction surface and the second dimming surface is in the range of 90°-170°. Preferably, the angle α between the blocking extinction surface and the second dimming surface is in the range of 115°-135°.

[0015] In some embodiments, when the light type adjustment component is installed, the end of the blocking extinction surface away from the second dimming surface is fixed on the mounting base surface. Taking the mounting base surface as a reference, the angle γ between the blocking extinction surface and the mounting base surface is in the range of 10°-80°. Preferably, the angle γ between the blocking extinction surface and the mounting base surface is in the range of 45°-55°.

[0016] In some embodiments, a side edge of the blocking extinction surface close to the second dimming surface is connected to a side edge of the second dimming surface away from the first dimming surface.

[0017] In some embodiments, a plating-resistance groove is provided on one side of the second dimming surface close to the blocking extinction surface; the plating-resistance groove is a structure that is recessed toward a side away from the mounting base surface.

[0018] In some embodiments, it also includes a positioning mounting surface, which is arranged behind the blocking extinction surface along the main light emitting direction and is configured to be positioned and mounted on a mounting base surface; a side edge of the positioning mounting surface close to the blocking extinction surface is connected to a side edge of the blocking extinction surface away from the second dimming surface.

[0019] In some embodiments, there are multiple light pattern adjustment components, 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 are connected.

[0020] In some embodiments, a recessed groove is disposed on the surface of the second dimming surface, and two ends of the recessed groove in the length direction respectively extend forward to the root of the first dimming surface and extend backward to the position where the second dimming surface and the blocking extinction surface meet.

[0021] An optical module, comprising the light pattern adjustment component; and further comprising:

[0022] The light source is arranged at or near the focus of the first dimming surface.

[0023] The collimating light-transmitting component is arranged in front of the light pattern adjusting component along the main light emitting direction, and is used for collimating the light and projecting the light to a side away from the light pattern adjusting component.

[0024] After adjustment by the light pattern adjustment component of this embodiment, the uncontrollable stray light can be weakened, and the presented light pattern is clear, so that the opposite lane is not affected and no obvious bright line is formed in front of the vehicle to attract the driver's attention, thereby ensuring driving safety; the present application can avoid burning caused by heat absorption, thereby improving the safety and service life of the entire vehicle; since the heat of the light pattern adjustment component is controllable, materials with general temperature resistance can be selected, thereby reducing material costs.

[0025] 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.

[0026] 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

[0027] 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.

[0028] Figure 1 A side view of an optical module provided by an embodiment of the present application;

[0029] Figure 2 A side view of a light pattern adjustment component, a light source, and a circuit board provided in another embodiment of the present application;

[0030] Figure 3 for Figure 2 Embodiment of the invention reduces the light path diagram of stray light;

[0031] Figure 4 A side view of a light pattern adjustment component, a light source, and a circuit board provided in another embodiment of the present application;

[0032] Figure 5 for Figure 2 A forward view of the medium light type adjustment component;

[0033] Figure 6 A schematic diagram of a plurality of light pattern adjustment components arranged side by side;

[0034] In the figure: a, installation base;

[0035] 10. Light type adjustment components;

[0036] 100, first dimming surface; 110, root; 120, light output end;

[0037] 200, second dimming surface; 210, sink;

[0038] 300, blocking the matte surface;

[0039] 400, positioning mounting surface; 410, positioning hole;

[0040] 500, resist plating groove;

[0041] 20. Light source;

[0042] 30. Collimating light-transmitting components;

[0043] 40. Circuit board. DETAILED DESCRIPTION

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In traditional headlight modules, the LED light source is reflected forward by a reflector to form a high beam or low beam light pattern, but not all light can be emitted forward to form the expected light pattern. Some light is emitted in a scattered manner to form unfavorable stray light that affects the light effect. In addition, uncontrollable stray light can easily dazzle the oncoming lane or form an obvious bright line in front of the car to attract the driver's attention, causing safety problems. Moreover, the energy of this part of the light is concentrated and directly absorbed by the reflector or circuit board, or absorbed by the reflector or circuit board after multiple scattering, causing the system to overheat and burn, reducing the safety and service life of the entire vehicle. Therefore, only high-priced materials with good temperature resistance can be selected.

[0051] refer to Figure 1-Figure 4 , the present application provides a light pattern adjustment component, including:

[0052] The first dimming surface 100 includes a root portion 110 and a light emitting end 120 arranged in sequence along the main light emitting direction, and is configured to receive part of the light emitted by the light source 20 and converge the light;

[0053] The second dimming surface 200 is arranged behind the first dimming surface 100 along the main light emitting direction and close to the root 110 of the first dimming surface 100, and is configured to receive light transmitted to its surface and project it toward the rear (directly rear or at a certain angle away from the rear) along the main light emitting direction.

[0054] 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 1 After the light is collected by the light type adjustment component, it is projected from the back to the front to form the direction of the expected light type. In some products, the light type adjustment component can be in the form of a reflector or a reflector, and the projection form is reflection; of course, in some other embodiments, the projection form is not limited to reflection, and light guide dimming, TIR convergence dimming, etc. can also be used instead. Figure 1 , the first dimming 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 light type adjustment 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;

[0055] 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 burning caused by heat absorption, thereby improving the safety and service life of the entire vehicle; since the heat of the light type adjustment component 10 is controllable, materials with general temperature resistance can be selected, reducing material costs.

[0056] 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.

[0057] In the present application, the reflected light emission direction preset by the first dimming surface 100 of the light pattern adjustment component 10 is the main light emission direction, and the first dimming surface 100 is a surface structure. Figure 1 In the vertical cross section extending along the main light emitting direction (roughly along the front-to-back direction), the light emitting end 120 of the first dimming surface 100 is in a dot shape. Figure 5 In the three-dimensional space, the light emitting end 120 of the first dimming 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.

[0058] refer to Figure 4 In 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 light type adjustment 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 first dimming surface 100 and the second dimming surface 200; taking the mounting base surface a as a horizontal plane, 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 light type adjustment 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 operating temperature of the light type adjustment 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 first dimming surface is 1mm-8mm, which can achieve the same technical effect.

[0059] 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 the side of the second dimming surface 200 away from the first dimming surface 100 ranges from 1mm to 5mm. In this embodiment, since the rear end of the root 110 is further back 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 first dimming 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 light type adjustment component 10 is also reduced to 150-160°C.

[0060] refer to Figure 4 In some embodiments, a side edge of the second dimming surface 200 close to the first dimming surface 100 is connected to the root 110 .

[0061] Specifically, the second dimming surface 200 is connected to the root 110 of the first dimming surface 100, and there is no gap between the two, so that no light will leak out from the gap between the first dimming 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.

[0062] In some embodiments, the first dimming 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 first dimming 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 first dimming surface 100 and the second dimming surface 200 reflectors with surface dimming ability.

[0063] In some embodiments, the light pattern adjustment component 10 is made of PC-HT (high temperature resistant PC, copolycarbonate) or PE I (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.

[0064] refer to Figure 2 and Figure 3 In some embodiments, with the mounting base a as a reference, the height of the side of the second dimming surface 200 away from the first dimming surface 100 is greater than the height of the side of the second dimming surface 200 close to the first dimming 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 first dimming 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.

[0065] refer to Figure 2 and Figure 5 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.

[0066] refer to Figure 2 and Figure 3 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 first dimming 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.

[0067] 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.

[0068] 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.

[0069] refer to Figure 2 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.

[0070] 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.

[0071] refer to Figure 4In some embodiments, when the light type adjustment 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 too 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.

[0072] 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.

[0073] refer to Figure 5 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.

[0074] 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.

[0075] refer to Figure 5 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 first dimming surface 100 .

[0076] 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.

[0077] refer to Figure 5In 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.

[0078] 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.

[0079] refer to Figure 2 and Figure 5 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.

[0080] 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, thereby being fixed to the mounting base surface a, and the position of the light type adjustment 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.

[0081] refer to Figure 5 In some embodiments, the first dimming surface 100 is a parabola with a single focus or an ellipse with a double focus. 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.

[0082] refer to Figure 5 and Figure 6 In some embodiments, there are multiple light pattern adjustment components 10, which are arranged side by side in a direction that is angled with the main light emitting direction, and at least two adjacent second dimming surfaces 200 are connected.

[0083] Specifically, the angle is an acute angle greater than 0°, there are multiple light type adjustment components 10 and they are arranged side by side, and multiple first dimming surfaces 100 can form personalized light types 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 the adjacent light type adjustment components 10 toward the rear along the main light output direction, so that the second dimming surfaces 200 cooperate 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 light type adjustment 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.

[0084] refer to Figure 5 In some embodiments, a recessed groove 210 is provided on the surface of the second dimming surface 200, and both ends of the recessed groove 210 in the length direction extend forward to the root 110 of the first dimming surface 100, and extend backward to the position where the second dimming surface 200 and the blocking extinction surface 300 are connected.

[0085] 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.

[0086] refer to Figure 1 The present application also provides an optical module, comprising the light pattern adjustment component 10 as described above; and further comprising:

[0087] The light source 20 is disposed at the focus or near the focus of the first dimming surface 100 (0-8 mm away from the focus).

[0088] The collimating light-transmitting component 30 is disposed in front of the light pattern adjusting component 10 along the main light emitting direction, and is used for collimating the light and projecting the light to a side away from the light pattern adjusting component 10 .

[0089] Specifically, the collimating light-transmitting component 30 can be a single lens or a combination of multiple lenses. The circuit board 40 supplies power to the light source 20. The light source 20 in the form of an LED or the like is located at or near the focus of the first dimming surface 100. Most of the emitted light is converged forward through the first dimming surface 100 and is collimated by the collimating light-transmitting component 30 and then projected forward to form the expected light pattern such as high beam and / or low beam. The light irradiated to the second dimming surface 200 will be adjusted by the second dimming surface 200 and then projected (in the form of projection, including guidance or reflection) to the rear (directly rear or at a certain angle away from the rear) along the main light-emitting direction, thereby avoiding scattered emission to form stray light that affects the beauty of the light effect, achieving the purpose of optimizing the light pattern adjustment, reducing uncontrollable stray light, 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.

[0090] The irradiated light hits the second dimming surface 200 and is concentratedly projected backwards and will not be absorbed 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 light type adjustment component 10 is controllable, materials with general temperature resistance can be selected, reducing material costs.

[0091] The present application also provides a vehicle, comprising any of the optical modules described above.

[0092] 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.

[0093] 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. A light pattern adjustment component, characterized in that: include: The first dimming surface includes a root portion and a light emitting end sequentially arranged along the main light emitting direction, and is configured to receive part of the light emitted by the light source and converge the light; The second dimming surface is arranged behind the first dimming surface along the main light emitting direction and close to the root of the first dimming surface, and is configured to receive light transmitted to its surface and project it toward the rear of the main light emitting direction.

2. The light pattern adjustment component according to claim 1, characterized in that: The projection size L1 of the second dimming surface on the longitudinal section extending along the main light emitting direction is 1mm-8mm; or, along the main light emitting direction, the distance between the root and a side edge of the second dimming surface away from the first dimming surface is 1mm-8mm.

3. The light pattern adjustment component according to claim 1, characterized in that: In the main light emitting direction, the distance between the rear end of the root and a side edge of the second dimming surface away from the first dimming surface is in the range of 1 mm to 5 mm.

4. The light pattern adjustment component according to claim 1, characterized in that: A side of the second dimming surface close to the first dimming surface is connected to the root.

5. The light pattern adjustment component according to claim 1, characterized in that: With the mounting base as a reference, a height of a side edge of the second dimming surface away from the first dimming surface is greater than a height of a side edge of the second dimming surface close to the first dimming surface.

6. The light pattern adjusting component according to claim 5, characterized in that: An included angle β between the second dimming surface and the mounting base surface is greater than or equal to 0° and less than or equal to 10°.

7. The light pattern adjusting component according to claim 1, characterized in that: The second dimming surface is a curved surface that is concave in a direction away from the mounting base surface.

8. The light pattern adjusting component according to claim 1, characterized in that: It also includes a blocking extinction surface, which is arranged behind the second dimming surface along the main light-emitting direction, and the blocking extinction surface and the first dimming 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 the light projected backward by the second dimming surface, and then reflect the light in a direction away from the second dimming surface.

9. The light pattern adjusting component according to claim 8, characterized in that: The angle α between the blocking extinction surface and the second dimming surface is in the range of 90°-170°. Preferably, the angle α between the blocking extinction surface and the second dimming surface is in the range of 115°-135°.

10. The light pattern adjusting component according to claim 8, characterized in that: One end of the blocking extinction surface away from the second dimming surface is fixed to the mounting base surface. Taking the mounting base surface as a reference, the angle γ between the blocking extinction surface and the mounting base surface is in the range of 10°-80°. Preferably, the angle γ between the blocking extinction surface and the mounting base surface is in the range of 45°-55°.

11. The light pattern adjusting component according to claim 8, characterized in that: A side edge of the blocking extinction surface close to the second dimming surface is connected to a side edge of the second dimming surface away from the first dimming surface.

12. The light pattern adjusting component according to claim 8, characterized in that: A plating-resistance groove is provided on one side of the second dimming surface close to the blocking extinction surface; the plating-resistance groove is a structure that is recessed toward a side away from the mounting base surface.

13. The light pattern adjusting component according to claim 8, characterized in that: It also includes a positioning installation surface, which is arranged behind the blocking extinction surface along the main light-emitting direction and is configured to be positioned and installed on the installation base surface; a side edge of the positioning installation surface close to the blocking extinction surface is connected to a side edge of the blocking extinction surface away from the second dimming surface.

14. The light pattern adjusting component according to claim 1, characterized in that: There are multiple light pattern adjustment components, which are arranged side by side in a direction forming an angle with the main light emitting direction, and at least two adjacent second dimming surfaces are connected.

15. The light pattern adjusting component according to claim 1, characterized in that: A recessed groove is provided on the surface of the second dimming surface, and two ends of the recessed groove in the length direction respectively extend forward to the root of the first dimming surface and extend backward to a side edge of the second dimming surface away from the first dimming surface.

16. An optical module, characterized in that: The light pattern adjusting component comprises the light pattern adjusting component as described in any one of claims 1 to 15; and further comprises: a light source, disposed at or near the focus of the first dimming surface; The collimating light-transmitting component is arranged in front of the light pattern adjusting component along the main light emitting direction, and is used for collimating the light and projecting the light to a side away from the light pattern adjusting component.

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