Light type adjusting component and optical module

Abstract

The utility model 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 vehicle safety, are increasingly valued. However, the LED light source in traditional headlight modules, after being reflected by a reflector, is often accompanied by stray light and the risk of overheating and burnout. This not only affects the lighting effect but also reduces the safety and service life of the entire vehicle. Utility Model Content

[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. It 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, 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 the side edge of the second dimming surface away from the first dimming surface is 1mm-8mm.

[0008] In some embodiments, along the main light emitting direction, a distance between a rear end of the root portion and a side 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 of the second dimming surface away from the first dimming surface is greater than a height of a side of the second dimming surface close to the first dimming surface.

[0011] In some embodiments, the 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, a blocking extinction surface is further included, 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 of the light-blocking surface close to the second dimming surface is connected to a side 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 the 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 forming an angle with the main light emitting direction, and at least two adjacent second dimming surfaces are connected.

[0020] In some embodiments, a groove is provided on the surface of the second dimming surface, and both ends of the groove in the longitudinal direction extend forward to the root of the first dimming surface and backward to the position where the second dimming surface meets the blocking extinction surface.

[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 toward 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; this application can avoid heat absorption and burning, 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 problems of adding new elements taking up space, affecting light efficiency, increasing product volume, and increasing 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 given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

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

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

[0030] Figure 3 for Figure 2 The embodiment reduces the light path diagram of stray light;

[0031] Figure 4 A side view of the light pattern adjustment component, light source, and 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 multiple light pattern adjustment components arranged side by side;

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

[0035] 10. Light pattern 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] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein 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 protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application 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. Therefore, once an item is defined in one drawing, it does not need to be further defined or 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 should not be understood as indicating or implying relative importance.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0048] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, or electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0049] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may 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. However, not all light can be emitted forward to form the expected light pattern. Some light is scattered and forms unfavorable stray light, affecting the lighting effect. In addition, uncontrollable stray light can easily dazzle oncoming lanes or form a clear bright line in front of the vehicle to attract the driver's attention, causing safety issues. 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 expensive and heat-resistant materials can be used.

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

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

[0054] Specifically, the purpose of defining the main light direction in this application is to distinguish it from the stray light projected backward. The main light direction is specifically Figure 1 The light-type adjustment component converges the light and projects the light from the back to the front to form the desired light pattern. In some products, the light-type adjustment component can be in the form of a reflector or a mirror, and the projection method is reflection. Of course, in some other embodiments, the projection method is not limited to reflection, and light guide dimming, TIR convergence dimming, etc. can also be used. 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 a desired light pattern, such as high beam or low beam; the light irradiated by 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 output direction, thereby avoiding scattered emission to form stray light that affects the beauty of the light effect. After adjustment by the light pattern adjustment component 10 of this embodiment, the uncontrollable stray light can also be reduced, 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 car to attract the driver's attention, thereby ensuring driving safety;

[0055] In the present application, the light hitting the second dimming surface 200 is projected backward in a concentrated manner 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 light pattern 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 problems of adding new elements taking up space, affecting light efficiency, increasing product volume, and increasing design difficulty, thereby improving system tolerance and design flexibility; and also eliminating the cost increase caused by adding parts.

[0057] In this application, the reflected light emitting direction preset by the first dimming surface 100 of the light pattern adjustment component 10 is the main light emitting direction, and the first dimming surface 100 is a surface structure. Figure 1 , on 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, and 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, the light emitting end 120 can be seen as an arc from the front in the main light emitting direction.

[0058] refer to Figure 4 In some embodiments, the projection dimension L1 of the second dimming surface 200 on a longitudinal section extending along the main light emitting direction and perpendicular to the mounting base surface a is 1 mm to 8 mm. Specifically, the light source 20 is typically assembled with the light pattern adjusting component 10. During installation, 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, for example, and the longitudinal section perpendicular to the mounting base surface a as a longitudinal vertical section, the projection dimension L1 of the second dimming surface 200 on the longitudinal section perpendicular to the mounting base surface a is 1 mm to 8 mm. Within this range, the projection dimension L1 of the second dimming surface 200 on the longitudinal section is not 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 1 mm, the operating temperature of the light pattern adjusting component 10 reaches approximately 200°C. The dimension L1 is also not too large, resulting in increased material costs and occupied installation space. In this embodiment, when the projected dimension L1 is 1mm-8mm, the stray light generated is significantly reduced, and the operating temperature of the light pattern adjustment component 10 is also reduced to approximately 150-160°C. Therefore, this embodiment provides a size range that achieves better implementation results. The above describes the size of the second dimming surface 200 from the perspective of projected dimension. If the main light output direction is used as a reference, the distance between the root and the side of the second dimming surface away from the first dimming surface along the main light output direction is 1mm-8mm, which can achieve the same technical effect.

[0059] In some embodiments, when a longitudinal cross-section is taken through the rearmost end of the root portion 110, the distance between the rear end of the root portion 110 and the side of the second dimming surface 200 distal from the first dimming surface 100 along the main light-emitting direction ranges from 1 mm to 5 mm. In this embodiment, since the rear end of the root portion 110 is located further back along the main light-emitting direction, the distance between the rear end of the root portion 110 and the side of the second dimming surface 200 distal from the first dimming surface 100 is selected to be a smaller value of 1 mm to 5 mm. When this size range is used, stray light generated is significantly reduced, and the operating temperature of the light pattern adjustment component 10 is also reduced to 150-160°C.

[0060] refer to Figure 4 In some embodiments, a side 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 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 base structure (e.g., a reflective mirror substrate). Specifically, the reflective layer can be made of a material with a certain reflective capability, such as aluminum, to achieve the desired dimming effect. Of course, in other embodiments, other processes such as electroplating and chemical plating can be used, or the first dimming surface 100 and the second dimming surface 200 can be directly integrally formed of a material with a certain reflective capability, such as metal or plastic.

[0063] In some embodiments, the light pattern adjustment component 10 is made of PC-HT (high-temperature resistant PC, copolycarbonate) or PE I (polyetherimide, abbreviated as PE I). The surface of PC-HT or PE I is easy to adhere to the reflective layer and will not fall off due to long-term use, thus ensuring structural stability.

[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 surface a. The concave surface converges light, converging it and projecting it toward the rear of the main light output direction. This improves projection efficiency and prevents the light projected by the second dimming surface 200 from diverging into scattered light.

[0066] refer to Figure 2 and Figure 3 In some embodiments, a blocking extinction surface 300 is further included, 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 and extinction surface 300, the energy of the light reflected after being partially absorbed by the blocking and extinction surface 300 is weakened twice. A small amount of the weakened reflected light hits the circuit board 40 on the mounting base 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 a, it will basically not be reflected into high-intensity stray light; the small amount of light that may be reflected forward by the circuit board 40 on the mounting base a can also provide brightness gain to 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 from being uncontrolled and projected again to a certain area 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 and 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 and extinction surface 300 is too small, and only partially modulates the light projected backward. The light reflected from the circuit board is reflected backward, resulting in little brightness gain in the light pattern. When the angle is too small, some of the light reflected from the blocking and extinction surface 300 fails to hit the circuit board 40 on the mounting base surface a and is absorbed. This light may also be directly and irregularly reflected forward, forming stray light that affects the light pattern.

[0070] As a preferred embodiment, the angle α between the blocking extinction surface 300 and the second dimming surface 200 is in the range of 115°-135°. It has been verified that when this angle range is selected, a larger amount of light hits the blocking extinction surface 300, 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 have 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 pattern adjustment component 10 is installed, the end of the blocking and extinction surface 300 facing away from the second dimming surface 200 is fixed to the mounting base surface a. With the mounting base surface a as a reference, the angle γ between the blocking and 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 and extinction surface 300 is small, and only a portion of the light projected backward can be adjusted. The light reflected from the circuit board will be reflected backward, resulting in little brightness gain for the light pattern. When the angle is too large, some of the light reflected from the blocking and extinction surface 300 will not hit the circuit board 40 on the mounting base surface a and will be absorbed. This light may also be directly and irregularly reflected forward, forming stray light that affects the light pattern.

[0072] Preferably, the angle γ between the light-blocking surface 300 and the mounting surface a is in the range of 45°-55°. It has been verified that when this angle range is selected, a greater amount of light strikes the light-blocking surface 300, and the circuit board 40 reflects more of the light that has been absorbed by its surface forward, thereby increasing the brightness of the primary light pattern. Furthermore, when this angle range is selected, substantially all of the light reflected by the light-blocking surface 300 strikes and is absorbed by the circuit board 40 on the mounting surface a.

[0073] refer to Figure 5 In some embodiments, the light-blocking extinction surface 300 forms a striped structure. The striped structure disperses light energy through multiple reflections and scattering, thereby reducing the intensity of light that strikes the surface. Furthermore, whether horizontal, vertical, or mesh-like stripes, they can all achieve the desired effect 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 a; but also effectively weakens the intensity of the light through 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 of the blocking extinction surface 300 close to the second dimming surface 200 is connected to a side 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 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 resist groove 500 is provided on one side of the second dimming surface 200 adjacent to the blocking matte surface 300. The resist groove 500 serves as a boundary between the second dimming surface 200 and the blocking matte surface 300. The resist groove 500 is designed to prevent the reflective layer on the surface of the second dimming surface 200 from diffusing to the blocking matte surface 300. This prevents the reflective layer from adhering to the blocking matte surface 300, resulting in a strong reflective effect and direct reflection of light onto the circuit board 40, causing it to significantly heat up.

[0078] Therefore, setting the anti-plating groove 500 is beneficial to blocking the extinction surface 300 from exerting 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 will not block the light path, thereby avoiding affecting the normal realization of the dimming function of this application.

[0079] refer to Figure 2 and Figure 5 In some embodiments, a positioning mounting surface 400 is further included, which is arranged behind the blocking and extinction surface 300 along the main light-emitting direction and is configured to be positioned and mounted on the mounting base surface a; a side edge of the positioning mounting surface 400 close to the blocking and extinction surface 300 is connected to a side edge of the blocking and extinction surface 300 away from the second dimming surface 200.

[0080] Specifically, the positioning holes 410 on the surface of the positioning mounting surface 400 are sleeved onto the positioning pins on the surface of the mounting base surface a, thereby securing the light pattern adjustment component 10 to the mounting base surface a. Furthermore, the positioning mounting surface 400 is connected to the light-blocking and extinction-blocking surface 300, with no gap between them. This prevents light from escaping through the gap between the positioning mounting surface 400 and the light-blocking and extinction-blocking surface 300, preventing light reflected from the light-blocking and extinction-blocking surface 300 from escaping uncontrolled and also preventing light from radiating into inactive areas and reducing display brightness.

[0081] refer to Figure 5 In some embodiments, the first dimming surface 100 is a parabola with a single focus or an elliptical surface with two focuses. Of course, similar parabola or elliptical shapes formed by approximate adjustments based on standard parabola or standard elliptical surfaces are also within the scope of protection 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 forms an angle 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 pattern adjustment components 10 and they are arranged side by side, and multiple first dimming 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 the adjacent light pattern 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 pattern adjustment component as a whole can be further reduced, and the risk of burning is also further reduced, which is beneficial to improving the safety and service life of the entire vehicle and reducing 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 the two ends of the recessed groove 210 in the longitudinal 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 is connected to the blocking extinction surface 300.

[0085] Specifically, on the one hand, the cross-section of the groove 210 is in the shape of a bent line, 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 the groove walls of the groove 210 have a more obvious converging effect on the stray light entering therein, and these light rays can be concentrated and projected in a concentrated manner 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 further 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 or near the focus of the first dimming surface 100 (0-8 mm 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 to collimate the light and project the light toward 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 light emitted is converged forward by the first dimming surface 100 and then collimated by the collimating light-transmitting component 30 and projected forward to form the expected light pattern, such as high beam and / or low beam. The light irradiated on 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 behind 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 projected backwards in a concentrated manner, 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 pattern 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 merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection 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 characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed 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. It 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, wherein: 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 the 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 portion and a side of the second dimming surface away from the first dimming surface is in a range of 1 mm to 5 mm.

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

6. The light pattern adjustment 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 adjustment 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 adjustment component according to claim 1, wherein: 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.

9. The light pattern adjustment component according to claim 8, characterized in that: The angle α between the blocking extinction surface and the second dimming surface ranges from 90° to 170°.

10. The light pattern adjusting component according to claim 8, wherein: The angle α between the blocking extinction surface and the second dimming surface ranges from 115° to 135°.

11. 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 ranges from 10° to 80°.

12. The light pattern adjusting component according to claim 8, wherein: 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 ranges from 45° to 55°.

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

14. 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 the side away from the mounting base surface.

15. The light pattern adjusting component according to claim 8, characterized in that: 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 the 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.

16. 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.

17. The light pattern adjusting component according to claim 1, wherein: 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 of the second dimming surface away from the first dimming surface.

18. An optical module, characterized in that: The light pattern adjusting component comprises the light pattern adjusting component according to any one of claims 1 to 17; 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 toward a side away from the light pattern adjusting component.

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