High beam illumination module

Abstract

The invention discloses a high beam illumination module, and relates to the technical field of car lamps, the high beam illumination module comprises an outer lens unit, an inner lens unit and a light source, the outer lens unit is of an integrally formed structure, and comprises a light emitting surface, a first total reflection surface and a second total reflection surface; the first parallel light enters from the light-emitting surface, is converged by the light-emitting surface and then is sequentially reflected by the first total reflection surface and the second total reflection surface to become second parallel light, and the longitudinal convergence degree is greater than the transverse convergence degree; light emitted by the light source forms middle parallel light after passing through the inner lens unit, and the middle parallel light is reflected by the second total reflection surface and the first total reflection surface in sequence and is finally emitted out from the light emitting surface to form a high beam light type wide in transverse direction and narrow in longitudinal direction. The first total reflection surface and / or the second total reflection surface are / is provided with a plurality of micro-arc-shaped concave surfaces so that light rays incident from the inner lens unit can be transversely expanded, the emitted high beam light pattern can be further transversely expanded, and the high beam light pattern is more uniform.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle lamps, and in particular to a high beam lighting module. Background Art

[0002] In recent years, high beam lighting modules have been rapidly upgraded with the development of vehicle lighting technology, but the outer lenses of most existing high beam lighting modules are single-layer single-focus focusing lenses, or single-layer multi-focus focusing lenses composed of multiple single-layer single-focus focusing lenses. Since the focusing degree of single-layer single-focus focusing lenses is the same in the horizontal and vertical directions, the controllability of the high beam light shape that is flat up and down and wide left and right is not good; moreover, in order to ensure the high beam light effect, the outer lens needs to maintain a large size to collect light, which limits the size change of the outer lens and is not conducive to the high beam lighting module to achieve an ultra-narrow opening size, and the ultra-narrow high beam lighting module has become one of the development trends of the industry; for single-layer multi-focus focusing lenses, the outer lens needs to splice multiple single-layer single-focus focusing lenses to form a complete high beam light pattern, which is not conducive to the design of the outer lens, and the static appearance of the outer lens is not good; the high beam lighting module contains two or more layers of lenses, which will also lead to large Fresnel losses and poor dispersion. Summary of the invention

[0003] In order to solve the above technical problems, the embodiment of the present application provides a high-beam lighting module, which realizes a longitudinal convergence degree greater than a lateral convergence degree through an integrally formed outer lens unit, which is equivalent to the separation of lateral and longitudinal focusing, and the longitudinal focal length is greater than the lateral focal length, so as to facilitate the realization of a high-beam light type that is wide in the transverse direction and narrow in the longitudinal direction, and a plurality of micro-arc concave surfaces are arranged on the total reflection surface, so that the high-beam light type is further widened in the transverse direction and more uniform; the integrally formed outer lens unit is a single-layer lens structure, so that the size of the outer lens can vary to meet various styling requirements, which is conducive to narrowing the opening size of the light-emitting surface to realize an ultra-narrow high-beam lighting module, and can also effectively reduce Fresnel loss, and utilizes total reflection to fold the light path and shorten the size, thereby reducing the volume and weight of the lens while improving the light efficiency. In addition, the static appearance consistency of the outer lens is good, the dispersion is small, and the color uniformity is good.

[0004] To achieve the above objectives, the present application provides the following technical solutions:

[0005] A high beam lighting module comprises a light source, an inner lens unit and an outer lens unit arranged in sequence along a first direction;

[0006] The outer lens unit is an integrally formed structure, and comprises a light-emitting surface, a first total reflection surface, and a second total reflection surface. The light-emitting surface is a surface of the outer lens unit facing away from the inner lens unit. The first total reflection surface and the second total reflection surface are arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction.

[0007] The first parallel light is incident from the light emitting surface, converged by the light emitting surface, and then reflected by the first total reflection surface and the second total reflection surface in sequence, converged along the second direction, and converged along a third direction to become the second parallel light, the third direction is perpendicular to the first direction and perpendicular to the second direction; the ratio of the width of the first parallel light along the second direction to the width of the second parallel light along the second direction is greater than the ratio of the width of the first parallel light along the third direction to the width of the second parallel light along the third direction;

[0008] After the light emitted by the light source passes through the inner lens unit, an intermediate parallel light is formed, and the intermediate parallel light is then reflected by the second total reflection surface and the first total reflection surface in sequence, and finally emitted from the light exiting surface to form a high beam light pattern;

[0009] The first total reflection surface and / or the second total reflection surface is provided with a plurality of micro-arc concave surfaces arranged along the third direction, and the micro-arc concave surfaces are concave along the third direction so as to expand the light incident from the inner lens unit along the third direction, so that the high beam light pattern is expanded along the third direction.

[0010] Optionally, the second total reflection surface is provided with a plurality of the micro-arc concave surfaces arranged along the third direction.

[0011] Optionally, in the second total reflection surface, with the projection of the light source on the second total reflection surface along the first direction as the center, the curvature radius R1 of the i-th micro-arc concave surface on the left and right sides along the third direction satisfies: 0mm<R1≤10mm, and the curvature radius R2 of the j-th micro-arc concave surface on the left and right sides along the third direction satisfies: R2≥20mm, wherein 1≤i≤4, j>4, and i and j are integers.

[0012] Optionally, the light emitting surface is connected to the first total reflection surface through a first side surface, and the light emitting surface is also connected to the second total reflection surface through a second side surface. The first side surface and the second side surface are arranged opposite to each other along the second direction, and a thick-walled light emitting structure is provided between the first side surface and the second side surface.

[0013] Optionally, the first side surface and the second side surface are provided with a light-guiding tooth structure arranged along the first direction and extending along the third direction, the light-guiding tooth structure is in a triangular pyramid shape, and the light-guiding tooth structure includes a first tooth surface and a second tooth surface that are intersected and connected.

[0014] Optionally, the light guide tooth structure is recessed into the thick-walled light output structure, and a height h of the light guide tooth structure along the second direction satisfies: 0 mm <h≤3mm。

[0015] Optionally, the second side surface is further provided with a light blocking tooth structure extending along the third direction, and the light blocking tooth structure is located on a side of the light guiding tooth structure on the second side surface close to the second total reflection surface;

[0016] The light-blocking tooth structure is recessed toward the inside of the thick-walled light-emitting structure, the light-blocking tooth structure is in a triangular pyramid shape, and the light-blocking tooth structure includes a third tooth surface and a fourth tooth surface that are intersected and connected.

[0017] Optionally, the inner lens unit and the outer lens unit are an integrally formed structure;

[0018] The inner lens unit comprises a light incident surface and a reflective bowl surface, the light incident surface is a surface of the inner lens unit facing away from the outer lens unit, and the reflective bowl surface is deflected toward the outer lens unit relative to the light incident surface;

[0019] The light emitted by the light source is incident from the light incident surface, converged to the reflection bowl surface through the light incident surface, and formed into the intermediate parallel light after being reflected by the reflection bowl surface.

[0020] Optionally, the inner lens unit includes two light incident surfaces and two reflective bowl surfaces, the light incident surfaces and the reflective bowl surfaces correspond one-to-one, the light incident surfaces and the light sources correspond one-to-one, and the two reflective bowl surfaces are symmetrically arranged along the first direction.

[0021] Optionally, the high beam lighting module includes at least two inner lens units, and each of the inner lens units is arranged in parallel along the third direction.

[0022] Compared with the prior art, the above technical solution has the following advantages:

[0023] The high-beam lighting module provided in the embodiment of the present application includes an outer lens unit, an inner lens unit and a light source which are sequentially arranged along a first direction, wherein the outer lens unit is an integrally formed structure, and the outer lens unit includes a light-emitting surface, a first total reflection surface and a second total reflection surface, the light-emitting surface is the surface of the outer lens unit facing away from the inner lens unit, the first total reflection surface and the second total reflection surface are arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction; the first parallel light is incident from the light-emitting surface, converged by the light-emitting surface, and then sequentially reflected by the first total reflection surface and the second total reflection surface, converged along the second direction, and converged along a third direction to become the second parallel light, the third direction is perpendicular to the first direction and the second direction, and the first direction, the second direction and the third direction constitute a three-dimensional coordinate system; in this way, the light-emitting surface is mainly used to converge the first parallel light incident from the light-emitting surface along the second direction (i.e., longitudinal direction), the second total reflection surface is mainly used to converge the light beam of the first parallel light incident from the light-emitting surface after being reflected by the first total reflection surface along the third direction (i.e., transverse direction), and the first total reflection surface is mainly used to match the light-emitting surface and the second The total reflection surface also plays a role of partial convergence, and the first total reflection surface and the second total reflection surface also play a role of folding the light path; and the ratio of the width of the first parallel light along the second direction to the width of the second parallel light along the second direction (characterizing the longitudinal convergence degree) is greater than the ratio of the width of the first parallel light along the third direction to the width of the second parallel light along the third direction (characterizing the transverse convergence degree), which is equivalent to the separation of transverse and longitudinal focusing, and the longitudinal focal length is greater than the transverse focal length, so as to facilitate the realization of a high beam light type that is wide in the transverse direction and narrow in the longitudinal direction; when applied, the light emitted by the light source passes through the inner After the lens unit, an intermediate parallel light is formed, and the intermediate parallel light is then reflected by the second total reflection surface and the first total reflection surface in sequence, and finally emitted from the light emitting surface to form a high beam light pattern; in particular, the first total reflection surface and / or the second total reflection surface is provided with a plurality of micro-arc concave surfaces arranged along a third direction (i.e., transversely), and the micro-arc concave surfaces are concave along the third direction, so as to expand the light incident from the inner lens unit along the third direction (i.e., transversely), so that the emitted high beam light pattern is further expanded along the third direction (i.e., transversely), and the high beam light pattern is also more uniform.

[0024] Furthermore, in the high-beam lighting module provided in the embodiment of the present application, the integrally formed outer lens unit is a single-layer lens structure, so that the size of the outer lens can vary to meet various styling requirements, which is beneficial to narrowing the opening size of the light-emitting surface. For example, the longitudinal opening size of the light-emitting surface can be about 12 mm, realizing an ultra-narrow high-beam lighting module; it can also effectively reduce Fresnel loss, and utilize total reflection, fold the light path, shorten the size, and reduce the volume and weight of the lens while improving the lighting efficiency; in addition, the static appearance consistency of the outer lens is good, the dispersion of the emitted high-beam light type is small, the color uniformity is good, and the problem of burns caused by focusing of multi-layer lenses due to access to sunlight can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic side view of a high beam lighting module provided in an embodiment of the present application;

[0027] Figure 2 A schematic top view of a high beam lighting module provided in an embodiment of the present application;

[0028] Figure 3 A bottom-up schematic diagram of a high-beam lighting module provided in an embodiment of the present application;

[0029] Figure 4 A front view schematic diagram of a high beam lighting module provided in an embodiment of the present application;

[0030] Figure 5 A schematic side view of an outer lens unit of an integrally formed structure in a high-beam lighting module provided in an embodiment of the present application;

[0031] Figure 6 A schematic top view of an outer lens unit of an integrally formed structure in a high-beam lighting module provided in an embodiment of the present application;

[0032] Figure 7 A schematic side view of a light tracing system of a high beam lighting module provided in an embodiment of the present application;

[0033] Figure 8 A schematic top view of a light tracing system of a high beam lighting module provided in an embodiment of the present application;

[0034] Fig. 9 A schematic front view of a light tracing system of a high beam lighting module provided in an embodiment of the present application;

[0035] Fig.10 A lighting effect diagram of a high beam light pattern emitted by a high beam lighting module (the second total reflection surface is provided with a slightly arc-shaped concave surface) provided in an embodiment of the present application;

[0036] Fig.11 A lighting effect diagram of a high beam light pattern emitted by a high beam lighting module (the second total reflection surface is not provided with a slightly arc-shaped concave surface) provided in an embodiment of the present application;

[0037] Fig.12A schematic top view of light emitted by a light source passing through an inner lens unit in a high-beam lighting module provided in an embodiment of the present application;

[0038] Fig.13 A schematic side view of light emitted by a light source passing through an inner lens unit in a high-beam lighting module provided in an embodiment of the present application.

[0039] Reference numerals:

[0040] 100-light source; 200-inner lens unit; 300-outer lens unit; 310-light emitting surface; 320-first total reflection surface; 330-second total reflection surface; X-first direction; Y-second direction; Z-third direction; S1-micro-arc concave surface; 340-first side surface; 350-second side surface; D1-thick-walled light emitting structure; T1-light guiding tooth structure; T11-first tooth surface; T12-second tooth surface; T2-light blocking tooth structure; T21-third tooth surface; T22-fourth tooth surface; 210-light incident surface; 220-reflection bowl surface. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in 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. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] As described in the background technology section, the outer lens of most existing high beam lighting modules is a single-layer single-focus focusing lens, or a single-layer multi-focus focusing lens composed of multiple single-layer single-focus focusing lenses. Since the focusing degree of a single-layer single-focus focusing lens is the same in the horizontal and vertical directions, the controllability of the high beam light shape that is flat up and down and wide left and right is not good; moreover, in order to ensure the high beam light effect, the outer lens needs to maintain a large size to collect light, which limits the size change of the outer lens and is not conducive to the high beam lighting module to achieve an ultra-narrow opening size, and the ultra-narrow high beam lighting module has become one of the development trends in the industry; for a single-layer multi-focus focusing lens, the outer lens needs to splice multiple single-layer single-focus focusing lenses to form a complete high beam light pattern, which is not conducive to the design of the outer lens, and the static appearance of the outer lens is not good; the high beam lighting module contains two or more layers of lenses, which will also lead to large Fresnel losses and poor dispersion.

[0043] In view of this, an embodiment of the present application provides a high beam lighting module. Figure 1 A schematic side view of a high beam lighting module provided in an embodiment of the present application is shown. Figure 2 A schematic top view of a high beam lighting module provided in an embodiment of the present application is shown. Figure 3FIG. 1 shows a bottom view schematic diagram of a high beam lighting module provided in an embodiment of the present application. Figure 4 FIG. 4 shows a front view schematic diagram of a high beam lighting module provided in an embodiment of the present application, such as Figure 1-Figure 4 As shown, the high beam lighting module provided in the embodiment of the present application includes a light source 100, an inner lens unit 200 and an outer lens unit 300 arranged in sequence along a first direction X, wherein the outer lens unit 300 is an integrally formed structure, and the outer lens unit 300 includes a light emitting surface 310, a first total reflection surface 320 and a second total reflection surface 330, the light emitting surface 310 is a surface of the outer lens unit 300 away from the inner lens unit 200, the first total reflection surface 320 and the second total reflection surface 330 are relatively arranged along a second direction Y, and the second direction X is perpendicular to the first direction Y.

[0044] In order to better understand this application, Figure 5 FIG. 1 is a side view schematic diagram of an outer lens unit 300 of an integrally formed structure in a high beam lighting module provided in an embodiment of the present application. Figure 6 FIG. 1 is a top view schematic diagram of an outer lens unit 300 of an integrally formed structure in a high beam lighting module provided in an embodiment of the present application. Figure 5 and Figure 6 As shown, the first parallel light is incident from the light emitting surface 310, converged by the light emitting surface 310, and then reflected by the first total reflection surface 320 and the second total reflection surface 330 in sequence, converged along the second direction Y, and converged along the third direction Z to become the second parallel light, the third direction Z is perpendicular to the first direction X, and perpendicular to the second direction Y; the first direction X, the second direction Y and the third direction Z constitute a three-dimensional coordinate system, wherein the plane formed by the first direction X and the third direction Z is a horizontal plane, the second direction Y is a longitudinal direction, that is, the longitudinal direction of the high beam light pattern projected by the high beam lighting module is narrow, and the third direction Z is the horizontal direction of the high beam light pattern projected by the high beam lighting module is wide.

[0045] Among them, the light-emitting surface 310 is mainly used to converge the first parallel light incident from the light-emitting surface 310 along the second direction Y (i.e., longitudinal direction), and the second total reflection surface 330 is mainly used to converge the light beam of the first parallel light incident from the light-emitting surface 310 after being reflected by the first total reflection surface 320 along the third direction Z (i.e., transverse direction); the first total reflection surface 320 is mainly used to match the light-emitting surface 310 and the second total reflection surface 330, and also plays a role of partial convergence; the first total reflection surface 310 and the second total reflection surface 320 also play a role of folding the light path.

[0046] Optionally, the light emitting surface 310 may be a convex surface along the second direction Y (ie, the longitudinal direction) so as to converge the first parallel light incident from the light emitting surface 310 along the second direction Y (ie, the longitudinal direction).

[0047] Optionally, the first total reflection surface 320 may be a curved surface or a flat surface.

[0048] Optionally, the second total reflection surface 330 may be a concave surface along the third direction Z (ie, horizontal direction) so as to converge the light beam of the first parallel light incident from the light emitting surface 310 after being reflected by the first total reflection surface 320 along the third direction Z (ie, horizontal direction).

[0049] like Figure 5 and Figure 6 As shown, the ratio of the width of the first parallel light along the second direction Y to the width of the second parallel light along the second direction Y represents the degree of convergence of the parallel light incident from the light exit surface 310 along the second direction Y (i.e., longitudinal direction) by the outer lens unit 300, and the ratio of the width of the first parallel light along the third direction Z to the width of the second parallel light along the third direction Z represents the degree of convergence of the parallel light incident from the light exit surface 310 along the third direction Z (i.e., transverse direction) by the outer lens unit 300. The ratio of the width of the first parallel light along the second direction Y to the width of the second parallel light along the second direction Y is greater than the ratio of the width of the first parallel light along the third direction Z to the width of the second parallel light along the third direction Z, that is, the longitudinal degree of convergence of the parallel light incident from the light exit surface 310 by the outer lens unit 300 is greater than the transverse degree, which is equivalent to transverse and longitudinal focusing separation, and the longitudinal focal length is greater than the transverse focal length, thereby facilitating the realization of a high beam light type that is transversely wide and longitudinally narrow.

[0050] Figure 7 A schematic diagram of a light tracing side view of a high beam lighting module provided in an embodiment of the present application is shown. Figure 8 A schematic top view of a light tracing system of a high beam lighting module provided in an embodiment of the present application is shown. Fig. 9 FIG. 1 shows a front view schematic diagram of a light tracing system of a high beam lighting module provided in an embodiment of the present application. Figure 7-Figure 9 As shown, the light emitted by the light source 100 forms intermediate parallel light after passing through the inner lens unit 200, and the intermediate parallel light is then reflected by the second total reflection surface 330 and the first total reflection surface 320 in sequence, and finally emitted from the light emitting surface 310 to form a high beam light pattern.

[0051] In particular, refer to Figure 3-Figure 4 as well as Fig. 9 As shown, the first total reflection surface 320 and / or the second total reflection surface 330 are provided with a plurality of micro-arc concave surfaces S1 arranged along a third direction Z (i.e., transversely). The micro-arc concave surfaces S1 are concave along the third direction Z (i.e., transversely) to expand the light incident from the inner lens unit 200 along the third direction Z (i.e., transversely) so that the emitted high beam light pattern is further expanded along the third direction Z (i.e., transversely), so that the high beam light pattern will be more uniform.

[0052] Optionally, the first total reflection surface 320 is provided with a plurality of micro-arc concave surfaces S1 arranged along the third direction Z (i.e., transverse direction). Alternatively, the second total reflection surface 330 is provided with a plurality of micro-arc concave surfaces S1 arranged along the third direction Z (i.e., transverse direction). Alternatively, both the first total reflection surface 320 and the second total reflection surface 330 are provided with a plurality of micro-arc concave surfaces S1 arranged along the third direction Z (i.e., transverse direction).

[0053] Taking the second total reflection surface 330 as an example, in which a plurality of micro-arc concave surfaces S1 are arranged along the third direction Z (ie, the transverse direction), it can be understood that, referring to Fig. 9 As shown, since the micro-arc concave surface S1 is concave along the third direction Z (i.e., transversely), the light emitted by the light source 100 forms intermediate parallel light after passing through the inner lens unit 200. The intermediate parallel light is incident on a plurality of micro-arc concave surfaces S1 arranged along the third direction Z (i.e., transversely) and concave along the third direction Z (i.e., transversely), and will be expanded and reflected by each micro-arc concave surface S1 along the third direction Z (i.e., transversely), thereby causing the emitted high beam light pattern to expand along the third direction Z (i.e., transversely).

[0054] It should be noted that, the larger the radius of curvature of the micro-arc concave surface S1, the smoother the arc of the micro-arc concave surface S1 along the third direction Z (i.e., horizontally), and the greater the degree of expansion and reflection of the light incident from the inner lens unit 200 by the micro-arc concave surface S1 along the third direction Z (i.e., horizontally); conversely, the smaller the radius of curvature of the micro-arc concave surface S1, the steeper the arc of the micro-arc concave surface S1 along the third direction Z (i.e., horizontally), and the smaller the degree of expansion and reflection of the light incident from the inner lens unit 200 by the micro-arc concave surface S1 along the third direction Z (i.e., horizontally).

[0055] It can also be understood that, the greater the degree of expansion of the micro-arc concave surface S1 for the light incident from the inner lens unit 200 along the third direction Z (i.e., lateral direction) expansion and reflection, the smaller the brightness of the light reflected by the micro-arc concave surface S1; conversely, the smaller the degree of expansion of the micro-arc concave surface S1 for the light incident from the inner lens unit 200 along the third direction Z (i.e., lateral direction) expansion and reflection, the greater the brightness of the light reflected by the micro-arc concave surface S1.

[0056] Taking into account the regulatory requirements for the high beam pattern, the brightness of the central area of ​​the high beam pattern must be high enough, and the brightness requirements for the areas on both sides of the high beam pattern are not high. Therefore, in the embodiment of the present application, the curvature radius of the micro-arc concave surface S1 is reasonably set to expand and reflect the light incident from the inner lens unit 200 along the third direction Z (i.e., horizontally), but the degree of expansion will not be too large, thereby ensuring that the brightness of the central area of ​​the high beam pattern is high enough, and allowing the high beam pattern to expand along the third direction Z (i.e., horizontally).

[0057] It can be seen that the high beam lighting module provided in the embodiment of the present application achieves a longitudinal convergence degree greater than a lateral convergence degree through the one-piece outer lens unit 300, which is equivalent to the separation of lateral and longitudinal focusing, and the longitudinal focal length is greater than the lateral focal length, which is convenient for realizing a high beam light pattern that is wide in the transverse direction and narrow in the longitudinal direction. In addition, a plurality of micro-arc concave surfaces S1 are arranged on the first total reflection surface 320 and / or the second total reflection surface 330 in the outer lens unit 300, so that the high beam light pattern is further widened in the transverse direction, and the high beam light pattern will also be more uniform.

[0058] Furthermore, in the high-beam lighting module provided in the embodiment of the present application, the integrally formed outer lens unit 300 is a single-layer lens structure, so that the size of the outer lens can vary to meet various styling requirements, which is beneficial to narrowing the opening size of the light-emitting surface 310. For example, the opening size of the light-emitting surface 310 along the second direction Y (i.e., the longitudinal direction) can be about 12 mm, thereby realizing an ultra-narrow high-beam lighting module. It can also effectively reduce Fresnel loss, and utilize total reflection, fold the light path, shorten the size, and reduce the volume and weight of the lens while improving the light efficiency. In addition, the outer lens has good static appearance consistency, the dispersion of the emitted high-beam light type is small, the color uniformity is good, and the problem of burns caused by focusing of multi-layer lenses due to access to sunlight can be avoided.

[0059] Considering that the light emitted by the light source 100 forms intermediate parallel light after passing through the inner lens unit 200, the intermediate parallel light is first reflected by the second total reflection surface 330, then reflected by the first total reflection surface 320, and finally emitted as a high beam light type through the light emitting surface 310, that is, the second total reflection surface 330 contacts the intermediate parallel light before the first total reflection surface 320, therefore, preferably, a plurality of micro-arc concave surfaces S1 arranged along a third direction Z (i.e., transversely) are provided on the second total reflection surface 330, so that the light incident from the inner lens unit 200 can be expanded along the third direction Z (i.e., transversely) as soon as possible, and subsequently the first total reflection surface 320 and the light emitting surface 310 adjust the expanded light along the third direction Z (i.e., transversely) to form a high beam light type with sufficient central brightness, transverse expansion and more uniformity.

[0060] Fig.10 : shows a lighting effect diagram of a high beam light type emitted by a high beam lighting module (the second total reflection surface 330 is provided with a slightly arc-shaped concave surface S1) provided in an embodiment of the present application, for comparison, Fig.11 The figure shows the lighting effect of the high beam light pattern emitted by a high beam lighting module (the micro-arc concave surface S1 is not arranged on the second total reflection surface 330) provided in an embodiment of the present application. It can be clearly seen that since a plurality of micro-arc concave surface structures S1 are arranged on the second total reflection surface 330, the high beam light pattern is further laterally widened and the high beam light pattern is also more uniform.

[0061] On this basis, further considering the regulations on high beam patterns, the brightness of the central area of ​​the high beam pattern must be high enough, and the brightness requirements on the two lateral areas of the high beam pattern are not high. In addition, we hope that the high beam pattern can be expanded laterally. Therefore, optional, refer to Fig. 9 As shown, in the second total reflection surface 330, with the projection of the light source 100 on the second total reflection surface 330 along the first direction X as the center, the curvature radius R1 of the i-th micro-arc concave surface S1 on the left and right sides along the third direction Z (i.e., the horizontal direction) satisfies: 0mm<R1≤10mm, and the curvature radius R2 of the j-th micro-arc concave surface S1 on the left and right sides along the third direction Z (i.e., the horizontal direction) satisfies: R2≥20mm, wherein 1≤i≤4, j>4, and i and j are integers.

[0062] It can be understood that, in the second total reflection surface 330, some micro-arc concave surfaces S1 along the third direction Z close to the projection of the light source 100 along the first direction X on the second total reflection surface 330 receive a larger brightness of the light incident from the inner lens unit 200, and the curvature radius R1 of this part of the micro-arc concave surface S1 is set to be smaller, so that the extension degree of the light incident from the inner lens unit 200 by this part of the micro-arc concave surface S1 along the third direction Z (i.e., horizontal) is relatively small, thereby ensuring the brightness of the central area of ​​the high beam light pattern; at the same time, the second total reflection In the surface 330, some micro-arc concave surfaces S1 along the third direction Z that are far from the projection of the light source 100 along the first direction X on the second total reflection surface 330 receive relatively low brightness of the light incident from the inner lens unit 200, and the curvature radius R2 of this part of the micro-arc concave surfaces S1 is set to be larger. Therefore, the extension degree of the light incident from the inner lens unit 200 by this part of the micro-arc concave surfaces S1 along the third direction Z (i.e., horizontally) is relatively large, so that the emitted high beam light pattern is expanded along the third direction Z (i.e., horizontally), and the high beam light pattern will be more uniform.

[0063] Optionally, in the second total reflection surface 330 , the width of the slightly arc-shaped concave surface S1 along the third direction Z (ie, the transverse direction) may be 1 mm.

[0064] Based on any of the above embodiments, optionally, Figure 1-Figure 3 As shown, in the outer lens unit 300, the light emitting surface 310 is connected to the first total reflection surface 320 through the first side surface 340, and the light emitting surface 310 is also connected to the second total reflection surface 330 through the second side surface 350. The first side surface 340 and the second side surface 350 are relatively arranged along the second direction Y, and the first side surface 340 and the second side surface 350 extend along the first direction X. There is a thick-walled light emitting structure D1 between the first side surface 340 and the second side surface 350. Such an arrangement, on the one hand, is more conducive to forming a high beam light type that is wide in the transverse direction and narrow in the longitudinal direction. On the other hand, the light emitting surface 310 extends out along the first direction X, so that the appearance design of the outer lens is more free.

[0065] Alternatively, in the outer lens unit 300, the light-emitting surface 310 can also be directly connected to the first total reflection surface 320, and the light-emitting surface 310 can also be directly connected to the second total reflection surface 330. With such an arrangement, the path of the light beam transmitted in the lens can be shortened, and the light efficiency can be further improved.

[0066] Based on the fact that the light-emitting surface 310 of the outer lens unit 300 is connected to the first total reflection surface 320 through the first side surface 340 and is connected to the second total reflection surface 330 through the second side surface 350, optionally, as Figure 1-Figure 3 shown, the first side surface 340 and the second side surface 350 are provided with a light guide tooth structure T1 arranged along the first direction X and extending along the third direction Z. The light guide tooth structure T1 is in a triangular pyramid shape, and the light guide tooth structure T1 includes a first tooth surface T11 and a second tooth surface T12 that are intersectingly connected.

[0067] It can be understood that in this application, the light rays in the mentioned intermediate parallel light, first parallel light, and second parallel light are parallel to each other and / or approximately parallel, that is, generally parallel is sufficient. And, the light rays emitted by the light source 100 form intermediate parallel light after passing through the inner lens unit 200. After the intermediate parallel light is reflected by the second total reflection surface 330 and the first total reflection surface 320 in sequence, the formed high beam light pattern has a better parallel effect relative to the intermediate parallel light. However, inevitably, after the intermediate parallel light is reflected by the second total reflection surface 330 and the first total reflection surface 320 in sequence, some non-parallel light (i.e., stray light) will be incident on the first side surface 340 and / or the second side surface 350. By arranging the light guide tooth structure T1 along the first direction X and extending along the third direction Z on the first side surface 340 and the second side surface 350, thus, the light guide tooth structure T1 is used to reflect and refract the stray light incident on the first side surface 340 and / or the second side surface 350, so that the stray light is emitted outside the lens and will not be emitted from the light-emitting surface 310, avoiding the interference of the stray light on the high beam light pattern.

[0068] Optionally, as Figure 1 shown, the light guide tooth structure T1 is recessed into the thick-wall light-emitting structure D1, that is, the connection angle of the first tooth surface T11 and the second tooth surface T12 of the light guide tooth structure T1 faces the inside of the thick-wall light-emitting structure D1. In this way, while using the light guide tooth structure T1 to dissipate the stray light, the volume of the thick-wall light-emitting structure D1 is also reduced, thereby saving materials and costs. However, it should be noted that since the light guide tooth structure T1 is recessed into the thick-wall light-emitting structure D1, therefore, the height h of the light guide tooth structure T1 along the second direction Y needs to be controlled. Optionally, it can be set that 0mm < h ≤ 3mm to avoid the light guide tooth structure T1 affecting the main parallel light rays passing through the inside of the thick-wall light-emitting structure D1.

[0069] Alternatively, the light-guiding tooth structure T1 may also protrude in a direction away from the thick-walled light-emitting structure D1, that is, the connection angle between the first tooth surface T11 and the second tooth surface T12 of the light-guiding tooth structure T1 protrudes in a direction away from the thick-walled light-emitting structure D1. In this way, the light-guiding tooth structure T1 can be prevented from affecting the main parallel light passing through the thick-walled light-emitting structure D1, but at the same time, the volume of the thick-walled light-emitting structure D1 will also be increased accordingly.

[0070] On the basis of the above embodiment, since the first total reflection surface 320 and the second total reflection surface 330 are arranged opposite to each other along the second direction Y, part of the light incident from the inner lens unit 200 may reach the vicinity of the second side surface 350 without passing through the second total reflection surface 330 and the first total reflection surface 320, or part of the light incident from the inner lens unit 200 may reach the vicinity of the second side surface 350 even if it passes through the second total reflection surface 330 and the first total reflection surface 320, and the light reaching the vicinity of the second side surface 350 does not contribute to the high beam light pattern and can be considered as stray light. Although the light guide tooth structure T1 has been used in the above embodiment to dissipate the stray light reaching the second side surface 350, it may still be insufficient to completely dissipate the stray light reaching the vicinity of the second side surface 350.

[0071] Based on this, further optional, such as Figure 1 As shown, in the outer lens unit 300, the second side surface 350 is further provided with a light-blocking tooth structure T2 extending along the third direction Z, and the light-blocking tooth structure T2 is located on the second side surface 350 on the side of the light-guiding tooth structure T1 close to the second total reflection surface 330; the light-blocking tooth structure T2 is recessed into the interior of the thick-walled light output structure D1, and the light-blocking tooth structure T2 is in the shape of a triangular cone, and the light-blocking tooth structure T2 includes a third tooth surface T21 and a fourth tooth surface T22 that are intersected and connected.

[0072] Similar to the light-guiding tooth structure T1, the light-blocking tooth structure T2 reflects and refracts the stray light incident on the second side surface 350, so that the stray light is emitted to the outside of the lens and does not exit from the light-emitting surface 310, thereby avoiding the interference of the stray light on the high-beam light pattern. Alternatively, even if the light-blocking tooth structure T2 reflects and refracts the stray light incident on the second side surface 350, some light is emitted from the light-emitting surface 310, but this part of the light is also emitted to an area with a higher light pattern, which is not within the angle range visible to the human eye.

[0073] Based on any of the above embodiments, optionally, Figure 1-Figure 3 As shown, the inner lens unit 200 and the outer lens unit 300 are an integrally formed structure; the inner lens unit 200 includes a light incident surface 210 and a reflective bowl surface 220, the light incident surface 210 is the surface of the inner lens unit 200 facing away from the outer lens unit 300, and the reflective bowl surface 220 is deflected toward the outer lens unit 300 relative to the light incident surface 210.

[0074] For better understanding, Fig.12 FIG. 1 is a schematic top view showing the light emitted by the light source 100 passing through the inner lens unit 200. Fig.13 A schematic side view of the light emitted by the light source 100 passing through the inner lens unit 200 is shown, and combined with Figure 7 and Figure 8 As shown, the light emitted by the light source 200 is incident from the light incident surface 210, converged to the reflection bowl surface 220 through the light incident surface 210, and formed an intermediate parallel light after being reflected by the reflection bowl surface 220; then, the intermediate parallel light is reflected by the second total reflection surface 330 and the first total reflection surface 320 in sequence, and emits a high beam light type from the light emitting surface 310.

[0075] The light incident surface 210 mainly plays the role of collecting and focusing light; the reflective bowl surface 220 is a total reflection free-form surface, which mainly plays the role of collecting and focusing light and forming intermediate parallel light. In addition, the inner lens unit 200 and the outer lens unit 300 are matched and coupled with each other, so as to finally project a high-beam light pattern with sufficient light intensity and a wide width in the horizontal direction and a narrow width in the vertical direction.

[0076] It can be understood that the inner lens unit 200 and the outer lens unit 300 are an integrally formed structure, that is, the inner lens unit 200 and the outer lens unit 300 are combined into an integrated lens, which can further shorten the size chain, further reduce Fresnel loss, and improve optical efficiency.

[0077] Specifically, Figure 1 and Figure 2 As shown, the first total reflection surface 320 and the reflection bowl surface 220 can be connected directly or through a connecting surface, and the second total reflection surface 330 and the light incident surface 210 can be connected through a connecting surface. In this way, after the light emitted by the light source 100 is incident on the light incident surface 210, it is transmitted inside the one-piece lens, and is reflected by the reflection bowl surface 220, the second total reflection surface 330 and the first total reflection surface 320 in sequence, and finally emitted from the light emitting surface 310. The optical path is short, the Fresnel loss is small, and the optical efficiency is high.

[0078] Alternatively, the inner lens unit 200 and the outer lens unit 300 may also be separate structures, depending on the specific situation.

[0079] Further optional, such as Figure 2 and Figure 3As shown, the inner lens unit 200 includes two light incident surfaces 210 and two reflective bowl surfaces 220, the light incident surfaces 210 and the reflective bowl surfaces 220 correspond one to one, the light incident surfaces 210 and the light source 100 correspond one to one, and the two reflective bowl surfaces 220 are symmetrically arranged along the first direction X; in this way, the corresponding light sources 100, the light incident surfaces 210 and the reflective bowl surfaces 220 constitute an inner lens sub-unit, and the two inner lens sub-units in the inner lens unit 200 are arranged side by side along the third direction Z (i.e., horizontally), which can improve the brightness of the central area of ​​the emitted high beam light pattern and make the emitted high beam light pattern widen along the third direction Z (i.e., horizontally).

[0080] Understandably, reference Figure 2 and Figure 3 As shown, when the inner lens unit 200 includes two inner lens sub-units, the two inner lens sub-units correspond to the same second total reflection surface 330, the same first total reflection surface 320 and the same light exit surface 310. Then, in the second total reflection surface 330, the curvature radius R1 of the i-th micro-arc concave surface S1 on the left and right sides along the third direction Z (i.e., the horizontal direction) with the projection of the light source 100 on the second total reflection surface 330 along the first direction X as the center can still satisfy: 0mm<R1≤10mm, and the curvature radius R2 of the j-th micro-arc concave surface S1 on the left and right sides along the third direction Z (i.e., the horizontal direction) satisfies: R2≥20mm, wherein 1≤i≤4, j>4, and i and j are integers.

[0081] However, it can also be understood that, in the second total reflection surface 330, the number of micro-arc concave surfaces S1 between the projections of the two light sources 100 on the second total reflection surface 330 along the first direction X may be relatively small, and the curvature radius R1 of the micro-arc concave surfaces S1 between the projections of the two light sources 100 on the second total reflection surface 330 along the first direction X may all satisfy: 0mm<R1≤10mm.

[0082] Further optionally, the high beam lighting module may include at least two inner lens units 200, and each inner lens unit 200 is arranged in parallel along a third direction Z (ie, transverse direction), which is conducive to expanding the emitted high beam light pattern along a third direction Y (ie, transverse direction).

[0083] It should be noted that when the high-beam lighting module includes at least two inner lens units 200 , each inner lens unit 200 may be an integrally formed structure, and each inner lens unit 200 may also be an integrally formed structure with the outer lens unit 300 .

[0084] Alternatively, in the high-beam lighting module, there may be only one inner lens unit 200, depending on the specific situation.

[0085] The various parts in this manual are described in a combination of parallel and progressive manners. Each part focuses on the differences from other parts, and the same or similar parts between the various parts can be referenced to each other.

[0086] With respect to the above description of the disclosed embodiments, the features described in the embodiments in this specification may be replaced or combined with each other, so that professionals in the field can implement or use the present application. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high beam lighting module, characterized in that: It includes a light source, an inner lens unit and an outer lens unit which are sequentially arranged along a first direction; The outer lens unit is an integrally formed structure, and comprises a light-emitting surface, a first total reflection surface, and a second total reflection surface. The light-emitting surface is a surface of the outer lens unit facing away from the inner lens unit. The first total reflection surface and the second total reflection surface are arranged opposite to each other along a second direction, and the second direction is perpendicular to the first direction. The first parallel light is incident from the light emitting surface, converged by the light emitting surface, and then reflected by the first total reflection surface and the second total reflection surface in sequence, converged along the second direction, and converged along a third direction to become the second parallel light, the third direction is perpendicular to the first direction and perpendicular to the second direction; the ratio of the width of the first parallel light along the second direction to the width of the second parallel light along the second direction is greater than the ratio of the width of the first parallel light along the third direction to the width of the second parallel light along the third direction; After the light emitted by the light source passes through the inner lens unit, an intermediate parallel light is formed, and the intermediate parallel light is then reflected by the second total reflection surface and the first total reflection surface in sequence, and finally emitted from the light exiting surface to form a high beam light pattern; The first total reflection surface and / or the second total reflection surface is provided with a plurality of micro-arc concave surfaces arranged along the third direction, and the micro-arc concave surfaces are concave along the third direction so as to expand the light incident from the inner lens unit along the third direction, so that the high beam light pattern is expanded along the third direction.

2. The high beam lighting module according to claim 1, characterized in that: The second total reflection surface is provided with a plurality of the micro-arc-shaped concave surfaces arranged along the third direction.

3. The high beam lighting module according to claim 2, characterized in that: In the second total reflection surface, with the projection of the light source on the second total reflection surface along the first direction as the center, the curvature radius R1 of the i-th micro-arc concave surface on the left and right sides along the third direction satisfies: 0mm<R1≤10mm, and the curvature radius R2 of the j-th micro-arc concave surface on the left and right sides along the third direction satisfies: R2≥20mm, wherein 1≤i≤4, j>4, and i and j are integers.

4. The high beam lighting module according to claim 1, characterized in that: The light emitting surface is connected to the first total reflection surface through a first side surface, and the light emitting surface is also connected to the second total reflection surface through a second side surface. The first side surface and the second side surface are arranged opposite to each other along the second direction, and a thick-walled light emitting structure is provided between the first side surface and the second side surface.

5. The high beam lighting module according to claim 4, characterized in that: The first side surface and the second side surface are provided with a light-guiding tooth structure arranged along the first direction and extending along the third direction. The light-guiding tooth structure is in a triangular pyramid shape and includes a first tooth surface and a second tooth surface that are intersected and connected.

6. The high beam lighting module according to claim 5, characterized in that: The light guide tooth structure is recessed into the thick-walled light output structure, and the height h of the light guide tooth structure along the second direction satisfies: 0 mm <h≤3mm。 7. The high beam lighting module according to claim 5, characterized in that: The second side surface is further provided with a light blocking tooth structure extending along the third direction, and the light blocking tooth structure is located on a side of the light guiding tooth structure on the second side surface close to the second total reflection surface; The light-blocking tooth structure is recessed toward the inside of the thick-walled light-emitting structure, the light-blocking tooth structure is in a triangular pyramid shape, and the light-blocking tooth structure includes a third tooth surface and a fourth tooth surface that are intersected and connected.

8. The high beam lighting module according to any one of claims 1 to 7, characterized in that: The inner lens unit and the outer lens unit are an integrally formed structure; The inner lens unit comprises a light incident surface and a reflective bowl surface, the light incident surface is a surface of the inner lens unit facing away from the outer lens unit, and the reflective bowl surface is deflected toward the outer lens unit relative to the light incident surface; The light emitted by the light source is incident from the light incident surface, converged to the reflection bowl surface through the light incident surface, and formed into the intermediate parallel light after being reflected by the reflection bowl surface.

9. The high beam lighting module according to claim 8, characterized in that: The inner lens unit includes two light incident surfaces and two reflective bowl surfaces, the light incident surfaces correspond to the reflective bowl surfaces one-to-one, the light incident surfaces correspond to the light sources one-to-one, and the two reflective bowl surfaces are symmetrically arranged along the first direction.

10. The high beam lighting module according to claim 8, characterized in that: The high beam lighting module includes at least two inner lens units, and each of the inner lens units is arranged in parallel along the third direction.

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