Optical lens modules, lens groups, and vehicle lighting fixtures

Abstract

A lens module comprising a second lens (200) and a third lens (300), wherein the actual focal point of the lens module is located within or outside the second lens (200). An optical lens including a lens module, an optical lens module and a vehicle light fixture further including a first lens (100) and a curved total internal reflection lens (700), wherein one side of the first lens (100) facing away from the third lens (300) includes an incident surface (101) and a first inclined surface (102) that are connected to each other, the curved total internal reflection lens (700) is provided below the first inclined surface (102) and the side facing away from the first inclined surface (102) is convex, external light rays enter from the incident surface (101), are reflected by the curved total internal reflection lens (700) and the first inclined surface (102), are focused to a real focal point (400), and are further projected as parallel light by the lens module. This solves the problems of conventional high and low beam lens modules, such as their long length and large volume in the axial direction of the vehicle body, the problem of the high beam light distribution pattern being locally yellowed and unattractive, the problem of the low beam cutoff line being poorly colored and suffering from severe color dispersion, and the fact that existing focusing lenses cannot be applied to designs such as large apertures or bar-shaped apertures, resulting in poor controllability for high and low beam light distribution patterns that are flattened vertically and wide horizontally.

Description

Technical Field

[0001] <Cross - reference to Related Applications> This invention claims priority from Chinese patent applications filed with the Chinese Patent Office on March 1, 2023, with application numbers 202310187410.0, invention title "Optical Lens and Vehicle Lamp", application number 202310187589.X, invention title "Optical Lens Module and Vehicle Lamp", and application number 202310187394.5, invention title "Lens Module and Vehicle Lamp", and the entire contents of which are incorporated herein by reference.

[0002] This invention relates to the field of vehicle lamps, particularly light to optical lens modules, lenses group and vehicle lamps.

Background Art

[0003] With the development of lighting technology for vehicle lamps, high - low beam lighting lens modules are becoming increasingly popular, and the horizontally long module design has become one of the development trends in the industry. In contrast, the prior art generally adopts the solution of "condenser + single - focus condenser lens".

[0004] However, in the high - beam module of the conventional "condenser + single - focus condenser lens", the length in the axial direction of the vehicle body is usually long and the volume is large. And in the existing single - focus lens, in order to improve the illuminance of the high - beam, the refraction angle of the light rays of the off - center condenser is set large, resulting in the color of the high - beam light distribution pattern being locally yellowish and not looking good.

[0005] At the same time, the low - beam module in the conventional "condenser + single - focus condenser lens" is usually long in the axial direction of the vehicle body and large in volume, and it is necessary to be compatible with the low - beam cut - off line light shield. Also, the conventional low - beam cut - off line does not have good color, and the color dispersion problem is relatively serious.

[0006] Furthermore, existing single-layer, single-focus lenses cannot be applied to designs with large apertures or bar-shaped apertures. This is because increasing the length of the lateral aperture increases the lens thickness and weight, which is detrimental to the principles of weight reduction, energy saving, and cost reduction. Moreover, conventional single-layer, single-focus lenses have the same degree of light focusing in both the lateral and vertical directions, resulting in poor control performance for high and low beams with a flattened vertical and wide horizontal light distribution pattern. [Overview of the project] [Problems that the invention aims to solve]

[0007] The present invention, optical lens module By providing vehicle lighting equipment, we aim to solve the problem that conventional high-beam lens modules are long and bulky in the axial direction of the vehicle body, and that the color of the high-beam light distribution pattern is yellowish in localized areas, resulting in an unsightly appearance. [Means for solving the problem]

[0008] According to the first aspect of the present invention, optical lens module The optical lens is provided. module The device includes a first lens, a lens group, and a curved total internal reflection lens, the lens group includes a second lens and a third lens, the second lens is integrally molded with the first lens, the third lens is installed on one side of the second lens, the actual focal point of the lens group is located within the second lens, one side of the first lens facing away from the third lens includes a connected incident surface and a first bevel, the curved total internal reflection lens is provided below the first bevel, one side of the curved total internal reflection lens facing away from the first bevel is convex, light rays emitted from an external light source can enter from the incident surface, are reflected by the curved total internal reflection lens and then reflected by the first bevel, are focused at the actual focal point, and thereafter the light rays that have passed the actual focal point are projected as parallel light by the lens group.

[0009] In the above-mentioned arbitrary technical proposal, the lens group further includes a plurality of real focal points and a plurality of curved total reflection lenses, all of which are located below the first inclined plane, and the plurality of curved total reflection lenses correspond one-to-one with the plurality of real focal points. Light rays emitted from an external light source can enter from the incident surface, are reflected by the curved total reflection lenses and then by the first inclined plane, and are focused at the corresponding real focal points. After passing through the real focal points, the light rays are projected as parallel light by the lens group.

[0010] In any of the above technical proposals, further, one side of the second lens facing the third lens includes a plurality of protrusions, the convex surface of any of the protrusions is convex along the optical axis, any of the protrusions and the third lens include a common real focal point, and when observed along the optical axis, the light rays diverging from the real focal point remain parallel in a first direction after passing through the corresponding protrusions, and the optical axis is perpendicular to the first direction.

[0011] In any of the above technical proposals, further, the side of the third lens facing the second lens is concave along the optical axis, and when observed along the optical axis, the light rays that pass through the side of the third lens facing the second lens remain parallel in the first direction, and the side of the third lens facing away from the second lens is convex along the optical axis, and the light rays projected from the side of the third lens facing the second lens become parallel light after passing through the side of the third lens facing away from the second lens.

[0012] In any of the above technical proposals, the first inclined surface can further reflect the mirror image of the curved total internal reflection lens to form a virtual image, and the focal point of the virtual image coincides with the actual focal point of the lens group.

[0013] In any of the above technical proposals, the first lens further includes a second bevel, a third bevel, and a vertical plane, wherein the incident plane, the first bevel, the third bevel, the second bevel, and the vertical plane are sequentially connected, the incident plane extends in the vertical direction, the first bevel extends toward the second lens at a first angle with respect to the incident plane, the second bevel extends toward the second lens at a second angle with respect to the incident plane, the third bevel extends backward from the first bevel at a third angle with respect to the second bevel, the vertical plane is parallel to the incident plane, and the edge of any of the curved total internal reflection lenses is connected to the second bevel, the third bevel, and the vertical plane.

[0014] In any of the above proposed technologies, each of the curved total internal reflection lenses further includes two opposing sides and two opposing curved edges, both of which are connected to the second slope, and each of the two curved edges is connected to the third slope and a plane perpendicular to it, and the second lens further includes two sides, the two sides facing each other in a first direction, and a boundary line is formed at the connection point between the edge of any of the convex surfaces and the corresponding side.

[0015] In any of the above technical proposals, the vertical dimensions of the incident plane and the vertical plane are both greater than the vertical dimensions of the curved edge connected to the vertical plane.

[0016] A second aspect of the present invention provides a vehicle light fixture, the vehicle light fixture comprising an optical lens according to the first aspect described above. module Includes.

[0017] In any of the above proposed technologies, the vehicle lighting further includes a plurality of light sources and a plurality of circuit boards, wherein the plurality of light sources correspond one-to-one with the plurality of circuit boards, the plurality of light sources correspond one-to-one with a plurality of real focal points, and the long side of any of the circuit boards extends in the vertical direction.

[0018] Optical lens according to the present invention moduleThe invention includes a first lens, a lens group, and a curved total internal reflection lens, the lens group including a second lens and a third lens, the second lens being integrally molded with the first lens, the third lens being positioned on one side of the second lens, and the actual focal point of the lens group being located within the second lens. One side of the first lens of the invention facing away from the third lens includes a connected incident surface and a first bevel, the curved total internal reflection lens is positioned below the first bevel, and one side of the curved total internal reflection lens facing away from the first bevel is convex, so that light rays emitted from an external light source can enter from the incident surface, undergo reflection by the curved total internal reflection lens, and further reflection by the first bevel, and are focused at the actual focal point, after which the light rays that have passed through the actual focal point are projected as parallel light by the lens group. That is, the actual focal point of the lens group is at the position of the focal point of the reflected light of the curved total internal reflection lens. The invention shortens the length of the module by folding the optical path. Also, the optical lens according to the present invention module The final light distribution pattern (high beam) is the image of the beam at the actual focal point of the lens group, therefore, the optical lens of the present invention module The brightness, color, and uniformity of the high beam light distribution pattern projected by the system are all good.

[0019] The present invention further aims to solve the problem that conventional high and low beam lens modules are long and bulky in the axial direction of the vehicle body, have poor color at the low beam cutoff line, and suffer from serious color dispersion problems, by providing an optical lens module and a vehicle lighting device.

[0020] A third aspect of the present invention provides an optical lens module. The optical lens module includes a first lens, a lens group, and a curved total internal reflection lens, the lens group including a second lens and a third lens, the second lens being integrally molded with the first lens, the third lens being provided on one side of the second lens, the actual focal point of the lens group being located outside the second lens, one side of the first lens facing away from the third lens including a connected incident surface and a first bevel, the curved total internal reflection lens being provided below the first bevel, the one side of the curved total internal reflection lens facing away from the first bevel being convex, light rays emitted from an external light source being able to enter from the incident surface, being reflected by the curved total internal reflection lens and then reflected by the first bevel, and the lens group being able to project the light rays reflected by the first bevel as parallel light.

[0021] In any of the above proposed technologies, the optical lens module further includes a plurality of curved total internal reflection lenses, one side of the second lens facing the third lens includes a plurality of protrusions, the convex surface of any of the protrusions is convex along the optical axis, the plurality of protrusions and the plurality of curved total internal reflection lenses correspond one-to-one, light rays emitted from an external light source can enter from the incident surface, are reflected by the corresponding curved total internal reflection lenses and then reflected by the first bevel. The optical axis direction is perpendicular to the first direction, and when observed along the optical axis direction, the light rays reflected by the first bevel remain parallel in the first direction after passing through the corresponding protrusions.

[0022] In any of the above technical proposals, further, the side surface of the third lens facing the second lens is concave along the optical axis, and when observed along the optical axis, a ray projected from any of the convex portions remains parallel in the first direction after passing through the side surface of the third lens facing the second lens. The side surface of the third lens facing away from the second lens is convex, and a ray projected from the side surface of the third lens facing the second lens and passing through the side surface of the third lens facing away from the second lens is parallel light.

[0023] In any of the above technical solutions, further, the optical lens module includes a plurality of curved total reflection lenses, light rays emitted from an external light source can enter from the incident surface, and after being reflected by the curved total reflection lenses, they are reflected by the first inclined surface. When observed along the optical axis direction, the light rays parallel in the first direction, which are reflected by the first inclined surface, remain parallel in the first direction after passing through the side surface of the second lens facing the third lens.

[0024] In any of the above technical solutions, further, the side surface of the third lens facing the second lens is concave along the optical axis. When observed along the optical axis direction, the light rays projected from the side surface of the second lens facing the third lens remain parallel in the first direction after passing through the side surface of the third lens facing the second lens. The side surface of the third lens facing away from the second lens is convex, and the light rays projected from the side surface of the third lens facing the second lens and passing through the side surface of the third lens facing away from the second lens are parallel light.

[0025] In any of the above technical solutions, further, the first lens further includes a second inclined surface, a third inclined surface, and a fourth inclined surface. The incident surface, the first inclined surface, the third inclined surface, the second inclined surface, and the fourth inclined surface are sequentially connected. The incident surface extends in the vertical direction. The first inclined surface forms a first angle with the incident surface and extends toward the second lens. The fourth inclined surface forms a second angle with the incident surface and extends toward the first inclined surface. The second inclined surface forms a third angle with the fourth inclined surface and extends toward the second lens. The third inclined surface forms a fourth angle with the second inclined surface and extends away from the first inclined surface. Any of the curved total reflection lenses includes two side edges and a curved edge connected to each other. The curved edge is connected to the third inclined surface. The two side edges are both connected to the fourth inclined surface, and the widths of the two side edges gradually decrease from top to bottom. [[ID=十一]]In any of the above technical solutions, further, the first lens further includes a vertical plane. The vertical plane is connected to the fourth inclined surface, and the vertical plane is parallel to the incident surface. [[ID=十三]]

[0026] In any of the above proposed technologies, the first inclined surface can further reflect the mirror image of the curved total internal reflection lens to form a virtual image, and the actual focal point of the lens group is located at the edge of the virtual image.

[0027] A fourth aspect of the present invention provides a vehicle light fixture, which includes an optical lens module according to the third aspect described above.

[0028] In any of the above proposed technologies, the vehicle lighting further includes a plurality of light sources and a plurality of circuit boards, wherein the plurality of light sources and the plurality of circuit boards correspond one-to-one, the plurality of light sources correspond one-to-one with a plurality of curved total reflection lenses, and the long side of any of the circuit boards extends in the vertical direction.

[0029] The optical lens module according to the present invention includes a first lens, a lens group, and a curved total internal reflection lens, the lens group including a second lens and a third lens, the second lens being integrally molded with the first lens, the third lens being positioned on one side of the second lens, the actual focal point of the lens group being located outside the second lens, one side of the first lens facing away from the third lens including a connected incident surface and a first bevel, the curved total internal reflection lens being positioned below the first bevel, and one side of the curved total internal reflection lens facing away from the first bevel being convex, in this invention, light rays emitted from an external light source can enter from the incident surface, undergo reflection by the curved total internal reflection lens, and further undergo reflection by the first bevel, and the lens group can project the light rays reflected by the first bevel as parallel light. That is, light rays reflected by the first bevel can be projected as parallel light by the lens group. This invention shortens the module length by folding the optical path. Furthermore, the final light distribution pattern of the optical (low-beam) lens module according to this invention becomes an image of the reflected beam of a curved total internal reflection lens, and the edge of the curved total internal reflection lens becomes a boundary line that forms the cutoff line of the low-beam light distribution pattern. Compared to conventional lens structures, this invention can form a good cutoff line color with virtually no color dispersion.

[0030] The present invention further includes lenses groupBy providing this solution, we aim to solve the problems of existing focusing lenses not being applicable to designs such as large apertures or bar-shaped apertures, and the poor control performance for light distribution patterns that are flattened vertically and wide horizontally for high and low beams.

[0031] According to the fifth aspect of the present invention, lens group The lens is provided. group The lens includes a third lens and a second lens, the third lens capable of focusing parallel light into a plurality of first focal points, the plurality of first focal points being on a first focal line, and when observed along the optical axis, the light rays that have passed through the third lens remain parallel in a first direction. The second lens is provided on one side of the third lens, the second lens capable of focusing the light rays that have passed through the third lens into a plurality of second focal points, the plurality of second focal points being on a second focal line, and when observed along the optical axis, the light rays that have passed through the second lens are not parallel in a first direction.

[0032] In any of the above technical proposals, furthermore, both the first focal line and the second focal line are parallel to the first direction, and the optical axis direction is perpendicular to the first direction.

[0033] In any of the above technical proposals, the second focal line is further located within the second lens.

[0034] In any of the above technical proposals, further, the lens group It includes multiple real foci, and the multiple second foci coincide with the multiple real foci.

[0035] In any of the above proposed technologies, the side of the second lens facing the third lens further includes a plurality of protrusions, the convex surface of any of the protrusions is convex along the optical axis, any of the convex surfaces has a real focal point with the third lens, and any of the convex surfaces is capable of focusing light rays that have passed through the third lens to a second focal point.

[0036] In any of the above technical proposals, the second lens further includes a slope facing the convex surface and two side surfaces on either side, wherein a curved edge is formed at the connection point between the edge of either of the convex surfaces and the corresponding side surface.

[0037] In any of the above technical proposals, the side of the third lens facing the second lens is concave along the optical axis, and the side of the third lens facing away from the second lens is convex along the optical axis.

[0038] A sixth aspect of the present invention provides a vehicle light fixture, the vehicle light fixture having a lens according to the fifth aspect described above. group Includes.

[0039] In any of the above proposed technologies, the vehicle lamp further includes a plurality of light sources and a first lens, the plurality of light sources correspond one-to-one with the plurality of second focal points, and a light ray emitted from any of the light sources can pass through the first lens and diverge from the corresponding second focal point.

[0040] In any of the above technical proposals, the first lens is further integrally molded with the second lens.

[0041] Lens according to the present invention group The system includes a third lens and a second lens, the third lens capable of focusing parallel light into a plurality of first focal points, the plurality of first focal points are on a first focal line, and when observed along the optical axis, the light rays that have passed through the third lens remain parallel in a first direction; the second lens is positioned on one side of the third lens, and the second lens capable of focusing the light rays that have passed through the third lens into a plurality of second focal points, the plurality of second focal points are on a second focal line, and when observed along the optical axis, the light rays that have passed through the second lens are not parallel in a first direction.

[0042] In other words, the third lens of the present invention focuses light only in the vertical direction and keeps the light rays parallel in the horizontal direction. That is, multiple first focal points converge on a single focal line, the second lens focuses light in the horizontal direction, and the position of the focusing point (second focal point) is adjustable (for example, by adjusting the curvature, distance, etc.), and multiple second focal points converge on a different focal line. Due to the reversibility of light, field workers can install multiple light sources as needed, and the light rays emitted from any of the multiple light sources can diverge from the corresponding second focal point and are finally diverged by the third lens to become parallel light. In the present invention, the focal length of light in the vertical direction is longer than that of light in the horizontal direction (the distance from the second focal point to the side of the third lens facing away from the second lens, i.e., the distance from the second focal point to the parallel light), which facilitates the focusing of the high and low beam light distribution pattern in the vertical direction. In this invention, the focal length of light in the left-right direction is shorter than that of light in the up-down direction (the distance from the second focal point to the side of the second lens facing the third lens, i.e., the distance from the second focal point to the parallel light in the left-right direction), which facilitates widening of the light distribution pattern of the high and low beams in the left-right direction and meets the design requirements.

[0043] Furthermore, compared to conventional single-layer, single-focus focusing lenses, the present invention achieves focusing by sharing two lenses, resulting in a thinner overall thickness and therefore lighter weight than a single-focus focusing lens.

[0044] To clarify and facilitate understanding the above-mentioned objectives, features, and advantages of the present invention, preferred embodiments are described below in detail with reference to the drawings. [Brief explanation of the drawing]

[0045] To more clearly explain the technical concepts related to embodiments of the present invention, the following briefly introduces the drawings necessary to illustrate the embodiments. Note that the attached drawings show only some embodiments of the present invention and should not be considered limiting in scope. Those skilled in the art can obtain other relevant drawings based on these drawings without any creative effort. [Figure 1]This shows a side view of the optical path of an optical lens module according to a first embodiment of the present invention. [Figure 2] This shows a plan view of the optical path of an optical lens module according to a first embodiment of the present invention. [Figure 3] This is a schematic diagram of a structure in which a first lens and a second lens are integrally molded according to a first embodiment of the present invention. [Figure 4] Figure 3 is a schematic diagram from a different perspective. [Figure 5] This is a side view of Figure 3. [Figure 6] This is a schematic diagram of the structure of the third lens according to the first embodiment of the present invention. [Figure 7] This is a schematic diagram of the overall structure of an optical lens module according to a third embodiment of the present invention. [Figure 8] This is a schematic diagram of a structure in which the first lens and the second lens are integrally molded according to a third embodiment of the present invention. [Figure 9] This is a schematic diagram of a different viewpoint from Figure 8. [Figure 10] This is a side view of Figure 8. [Figure 11] This is a schematic diagram of the structure of the third lens according to the third embodiment of the present invention. [Figure 12] This is a side view of the optical path of an optical lens module according to a third embodiment of the present invention. [Figure 13] This is a plan view of the optical path of an optical lens module according to a third embodiment of the present invention. [Figure 14] This is a schematic diagram of yet another viewpoint of Figure 8. [Figure 15] This is a schematic diagram of the overall structure of an optical lens module according to a fourth embodiment of the present invention. [Figure 16] This is a schematic diagram of a structure in which the first lens and the second lens are integrally molded according to the fourth embodiment of the present invention. [Figure 17] This is a schematic diagram of a different viewpoint from Figure 16. [Figure 18] This is a side view of Figure 16. [Figure 19] This is a schematic diagram of the structure of the third lens according to the fourth embodiment of the present invention. [Figure 20] This is a side view of the optical path of an optical lens module according to a fourth embodiment of the present invention. [Figure 21] This is a plan view of the optical path of an optical lens module according to a fourth embodiment of the present invention. [Figure 22] This is a schematic diagram of yet another viewpoint of Figure 16. [Figure 23] This is a side view of the optical path of the main beam of an optical lens module according to a third embodiment of the present invention. [Figure 24] This is a side view of the lens group and optical path according to the sixth embodiment of the present invention. [Figure 25] This is a plan view of the lens group and optical path according to the sixth embodiment of the present invention. [Figure 26] This is a perspective view of the third lens and optical path in the first example according to the sixth embodiment of the present invention. [Figure 27] This is a perspective view of the third lens and optical path in a second example according to the sixth embodiment of the present invention. [Figure 28] This is a side view of the third lens and optical path according to the sixth embodiment of the present invention. [Figure 29] This is a plan view of the third lens and optical path according to the sixth embodiment of the present invention. [Figure 30] This is a schematic diagram of the overall structure of the lens group according to the sixth embodiment of the present invention. [Modes for carrying out the invention]

[0046] The technical aspects of the present invention will be clearly and completely described below with reference to the drawings, but obviously the embodiments described are only some, not all, embodiments of the present invention. All other embodiments that a person skilled in the art may obtain without creative work based on the embodiments of the present invention are all within the scope of the protection of the present invention.

[0047] Furthermore, in the description of this invention, the directions or positional relationships indicated by terms such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" are based on the directions or positional relationships shown in the drawings and are merely for the convenience of explaining the invention and for the sake of simplifying the description. They do not indicate or imply that the target device or element necessarily has a specific direction or is configured and operated in a specific direction, and should not be understood as limitations on this invention. In addition, the terms "first," "second," and "third" are used only for explanatory purposes and should not be understood as indicating or implying relative importance.

[0048] In the description of this invention, unless otherwise explicitly stated and limited, terms such as "mounting," "connection," and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a removable connection, a jointed connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or internal communication between two elements. Those skilled in the art will be able to understand the specific meaning of the above terms in this invention depending on the specific situation.

[0049] Furthermore, while the technical solutions of each embodiment can be combined with each other, it must be assumed that they are feasible for a person skilled in the art. If a combination of technical solutions results in a contradiction or is not feasible, such a combination of technical solutions should be considered nonexistent and does not fall within the scope of protection claimed by the present invention.

[0050] <First Example> The first aspect of this invention is the optical lens module This solution addresses the problem of conventional high-beam lens modules being long and bulky in the axial direction of the vehicle body, and the high-beam light distribution pattern being locally yellowed, resulting in an unattractive appearance.

[0051] With the advancement of lighting technology for vehicle lighting, high and low beam lighting lens modules are becoming increasingly common. However, with the conventional "concentrator + single-focus concentrating lens" solution, high beam modules are typically long in the axial direction of the vehicle body and have a large volume.

[0052] Before the present invention was proposed, in existing single-focus lenses, the high-beam module was designed with a large ray refraction angle of the non-center condenser to improve the illuminance of the high beam, resulting in a yellowish tint in the high-beam light distribution pattern in certain areas, which was unsightly.

[0053] In view of this, the first aspect of the present invention is an optical lens module To provide: the optical lens module The lens includes a first lens 100, a lens group, and a curved total internal reflection lens 700. The lens group includes a second lens 200 and a third lens 300, the second lens 200 being integrally molded with the first lens 100, the third lens 300 being provided on one side of the second lens 200, and the actual focal point 400 of the lens group being located within the second lens 200. In the present invention, one side of the first lens 100 facing away from the third lens 300 includes a mutually connected incident surface 101 and a first inclined surface 102, the curved total internal reflection lens 700 is provided below the first inclined surface 102, and one side of the curved total internal reflection lens 700 facing away from the first inclined surface 102 is convex. Light rays emitted from the external light source 500 can enter from the incident surface 101, are reflected by the curved total internal reflection lens 700, then reflected by the first inclined surface 102, and focused at the actual focal point 400. After passing through the actual focal point 400, the light rays are projected as parallel light by the lens group. That is, the actual focal point 400 of the lens group is located at the point of focus of the reflected light from the curved total internal reflection lens 700. The present invention shortens the length of the module by folding the optical path. Furthermore, the optical lens according to the present invention module The final light distribution pattern (of the high beam) is the image of the beam at the actual focal point 400 of the lens group, therefore, the optical lens according to the present invention moduleThe brightness, color, and uniformity of the light distribution pattern of the high beam projected by the system are all good. Below, the specific structure of the first lens 100, the lens group, and the curved total internal reflection lens 700 will be described in detail.

[0054] In embodiments of the present invention, as shown in Figures 1 to 5, the lens group includes a plurality of actual focal points 400, and there are a plurality of curved total internal reflection lenses 700, all of which are located below the first inclined surface 102, and the plurality of curved total internal reflection lenses 700 correspond one-to-one with the plurality of actual focal points 400. Light rays emitted from the light source 500 can enter from the incident surface 101, are reflected by the curved total internal reflection lenses 700, and then further reflected by the first inclined surface 102, and are focused at the corresponding actual focal points 400. Subsequently, the lens group projects the light rays that have passed through the actual focal points 400 as parallel light.

[0055] As an example, as shown in Figures 2 to 4, one side of the second lens 200 facing the third lens 300 includes a plurality of convex portions 201, the convex surface of any of the convex portions 201 is convex along the optical axis, and any of the convex portions 201 include the third lens 300 and one real focal point 400. When observed along the optical axis (the optical axis is perpendicular to the first direction (X)), the light rays diverging from the real focal point 400 and passing through the corresponding convex portions 201 remain parallel in the first direction X, that is, they are not parallel in the vertical direction but remain parallel in the horizontal direction. Due to the reversibility of light, any of the convex surfaces include the third lens 300 and one real focal point 400. Here, the expression that one surface of the lens is convex along the optical axis means that the region near the axis of the corresponding surface is convex. Therefore, even if it is described that one surface of the lens is convex, the edge portion of that one surface of the lens may be concave.

[0056] Furthermore, as shown in Figure 3, the second lens 200 further includes a connecting virtual surface (which connects to the virtual surface 103 of the first lens 100) and two side surfaces located on both sides, the first direction X can penetrate the two side surfaces, and a curved edge (boundary line) is formed at the connection point between the edge of either convex surface and the corresponding side surface. Here, the curvature of the two curved edges can be set as needed.

[0057] In embodiments of the present invention, as shown in Figures 1, 2, and 6, the side surface of the third lens 300 facing the second lens 200 is concave along the optical axis, and when observed along the optical axis, the light rays projected from any of the convex portions 201 and passing through the side surface of the third lens 300 facing the second lens 200 remain parallel in the first direction X. That is, they remain parallel in the left-right direction but not in the up-down direction. The side surface of the third lens 300 facing away from the second lens 200 is convex, and the light rays projected from the side surface of the third lens 300 facing the second lens 200 and passing through the side surface of the third lens 300 facing away from the second lens 200 are parallel light.

[0058] Due to the reversibility of light, as shown in Figures 1 and 2, the third lens 300 directs parallel light to multiple first focal points. 111 It can concentrate light to multiple first focal points 111 This is the first focal line. 110 When viewed from above and along the optical axis (i.e., in a plan view), the light rays passing through the third lens 300 remain parallel in the first direction X. The second lens 200 is positioned on one side of the third lens 300, and the second lens 200 directs the light rays passing through the third lens 300 to multiple second focal points. 211 (That is, the light can be focused to the actual focal point of the lens group at 400). Multiple second focal points 211 The light rays are located on the second focal line, and when observed along the optical axis, the rays that have passed through the second lens 200 are not parallel in the first direction X.

[0059] In other words, the third lens 300 of the present invention focuses light only in the vertical direction, while the light rays in the horizontal direction remain parallel. That is, multiple first focal points 111The light converges on a single focal line, the second lens 200 focuses light in the left-right direction, and the point of convergence is the actual focal point 400 of the lens group. Multiple second focal points 211 The light converges on another focal line. In this invention, the vertical light has a longer focal length than the horizontal light (as shown in Figure 1, the distance from the actual focal point 400 to the side of the third lens 300 facing away from the second lens 200, i.e., the distance from the light source to the parallel light), which is advantageous for the high and low beam light distribution pattern to concentrate in the vertical direction. In this invention, the horizontal light has a shorter focal length than the vertical light (as shown in Figure 2, the distance from the actual focal point 400 to the side of the second lens 200 facing the third lens 300, i.e., the distance from the light source to the horizontal parallel light), which is advantageous for the high and low beam light distribution pattern to be wide horizontally and flattened vertically, and the high beam light distribution pattern is made flat and wide, satisfying the demand for the high and low beam light distribution pattern. Furthermore, compared to conventional single-layer, single-focus focusing lenses, the present invention uses two lenses (a second lens 200 and a third lens 300) to achieve focusing, resulting in a thinner overall thickness and consequently a reduced weight compared to a single-focus focusing lens.

[0060] Here, the first inclined surface 102 can mirror the curved total internal reflection lens 700 to form a virtual image, and the focal point of the virtual image coincides with the actual focal point 400 of the lens group. That is, if the curved total internal reflection lens 700 is not mirrored by the first inclined surface 102, the focal point of the curved total internal reflection lens 700 coincides with the actual focal point 400 of the lens group, and if it is mirrored as a virtual image, the focal point of the virtual image coincides with the actual focal point 400 of the lens group. This is equivalent to the optical lens module The high beam light distribution pattern projected by this system exhibits good brightness, color, and uniformity.

[0061] In an embodiment of the present invention, as shown in Figure 5, the first lens 100 further includes a second inclined surface 105, a third inclined surface 104, and a vertical plane 106, and the incident surface 101, the first inclined surface 102, the third inclined surface 104, the second inclined surface 105, and the vertical plane 106 are connected in sequence. The incident surface 101 extends vertically, the first inclined surface 102 extends toward the second lens 200 at a first angle with respect to the incident surface 101, the second inclined surface 105 extends toward the second lens 200 at a second angle with respect to the incident surface 101, the third inclined surface 104 extends backward from the first inclined surface 102 at a third angle with respect to the second inclined surface 105, the vertical plane 106 is parallel to the incident surface 101, and the second inclined surface 105 is parallel to the third inclined surface 104. The edge of any of the curved total internal reflection lenses 700 is connected to the second bevel 105, the third bevel 104, and the vertical plane 106.

[0062] As an example, any curved total internal reflection lens 700 includes two opposing sides 701 and two opposing curved sides 702, where both sides 701 are connected to a second slope 105 and the two curved sides 702 are connected to a third slope 104 and a vertical plane 106, respectively.

[0063] Note that the first lens 100 and the second lens 200 may be integrally molded. Here, in order to show the lens group (second lens 200 and third lens 300), the integrally molded first lens 100 and second lens 200 are separated by a virtual surface 103, as shown in Figures 1 and 5, but the virtual surface 103 does not actually exist.

[0064] Furthermore, the beam formed by conventional "concentrator + single-focus focusing lens" modules presents a ring-shaped, concentrator-like spot image on the surface of the car's headlamp cover. This defect has drawn complaints from many manufacturers.

[0065] The structure of the curved total internal reflection lens described above in the present invention is regular and complete, and the edges are neat and regular. Therefore, the uniformity of the spot of the headlamp cover is good, the appearance is good, and customer satisfaction is improved.

[0066] Furthermore, as shown in Figures 3 to 5, the vertical dimensions of both the incident surface 101 and the vertical plane 106 are greater than the vertical dimensions of the curved edge 702 connected to the vertical plane 106. That is, a light leakage flange 600 is formed extending from the bottom of the incident surface 101 and the vertical plane 106. The light leakage flange 600 works in conjunction with the second inclined surface 105 to reduce the generation of stray light and project excess stray light onto the ground.

[0067] Furthermore, since the third lens 300 of the present invention is a non-fixed focal length lens, this module design can avoid the concentration of sunlight in a point or block form, significantly reducing the risk of burnout of vehicle lighting components due to sunlight.

[0068] <Second Example> A second aspect of the present invention is the optical lens according to the first embodiment described above. module We provide vehicle lighting fixtures that include [specific components / features].

[0069] Furthermore, the vehicle lighting fixture further includes multiple light sources 500 and multiple circuit boards, with each of the multiple light sources 500 and circuit boards corresponding one-to-one, and each of the multiple light sources 500 corresponding one-to-one with multiple focal points 400. The long side of any of the circuit boards extends vertically, that is, the circuit boards are positioned perpendicular to the optical axis. This layout allows for good thermal circulation of the module, is advantageous for heat dissipation, and is easy to install.

[0070] Optical lens according to the present invention moduleThis includes a first lens, a lens group, and a curved total internal reflection lens. Here, the lens group includes a second lens and a third lens, the second lens is integrally molded with the first lens, the third lens is installed on one side of the second lens, and the actual focal point of the lens group is located within the second lens. In this invention, one side of the first lens facing away from the third lens includes an incident surface and a first bevel surface that are connected to each other, the curved total internal reflection lens is installed below the first bevel surface, and one side of the curved total internal reflection lens facing away from the first bevel surface is convex. Light rays emitted from an external light source can enter from the incident surface, are reflected by the curved total internal reflection lens, and then reflected again by the first bevel surface, and are focused at the actual focal point. After that, the light rays that have passed through the actual focal point are projected as parallel light by the lens group. That is, the actual focal point of the lens group is at the position of the focal point of the reflected light of the curved total internal reflection lens. This invention shortens the length of the module by folding the optical path. Also, the optical lens according to the present invention module The final light distribution pattern (of the high beam) is the image of the beam at the actual focal point of the lens group, therefore, the optical lens of the present invention module The high beam light distribution pattern projected by this system exhibits good brightness, color, and uniformity.

[0071] <Third Example> A third aspect of the present invention is to provide an optical lens module that solves the problem of conventional high and low beam lens modules having a long length and large volume in the axial direction of the vehicle body, as well as poor color at the low beam cutoff line and severe color dispersion.

[0072] Before the present invention was proposed, conventional low-beam modules in the "concentrator + single-focus concentrating lens" solution were typically long in the axial direction of the vehicle body, had a relatively large volume, and required compatibility with a low-beam cutoff line light shield. Furthermore, conventional low-beam cutoff lines had poor color and relatively serious color dispersion.

[0073] In view of this, a third aspect of the present invention provides an optical lens module. The optical lens module includes a first lens 100, a lens group, and a curved total internal reflection lens 700, where the lens group includes a second lens 200 and a third lens 300, the second lens 200 being integrally molded with the first lens 100, the third lens 300 being mounted on one side of the second lens 200, and the actual focal point 400 of the lens group being located outside the second lens 200. One side of the first lens 100 facing away from the third lens 300 includes an incident surface 101 and a first inclined surface 102 connected to each other, the curved total internal reflection lens 700 is mounted below the first inclined surface 102, and the one side of the curved total internal reflection lens 700 facing away from the first inclined surface 102 is convex. In this invention, light rays emitted from an external light source 500 can enter from the incident surface 101, are reflected by the curved total internal reflection lens 700, and are further reflected by the first bevel surface 102. The lens group can project the light rays after reflection by the first bevel surface 102 as parallel light. That is, the light rays reflected by the first bevel surface 102 can be projected as parallel light by the lens group. This invention shortens the length of the module and reduces the volume of the module by folding the optical path. Furthermore, the final light distribution pattern of the optical (low beam) lens module according to this invention is the image of the reflected beam of the curved total internal reflection lens 700, and the edge of the curved total internal reflection lens 700 becomes the boundary line that forms the cutoff line of the low beam light distribution pattern. Compared to conventional lens structures, this invention can form a good cutoff line color and virtually no color dispersion occurs. The specific structure and optical path of the first lens 100, the lens group, and the curved total internal reflection lens 700 will be described in detail below.

[0074] In a third embodiment of the present invention, as shown in Figures 7 to 14, the optical lens module may include a plurality of curved total internal reflection lenses 700. One side of the second lens 200 facing the third lens 300 includes a plurality of convex portions 201, and the convex surface of any of the convex portions 201 is convex along the optical axis, with the plurality of convex portions 201 corresponding one-to-one with the plurality of curved total internal reflection lenses 700. As shown in Figures 12 and 13, light rays emitted from an external light source 500 can enter from the incident surface 101, undergo reflection by the corresponding curved total internal reflection lenses 700, and then undergo further reflection by the first bevel surface 102. Light rays reflected by the first bevel surface 102 and passing through the corresponding convex portions 201 remain parallel in the first direction X. That is, they remain parallel in the left-right direction but not in the up-down direction. Due to the reversibility of light, any of the convex surfaces and the third lens 300 include one real focal point 400. Here, the expression that one surface of the lens is convex along the optical axis means that the region near the axis of the corresponding surface is convex. Therefore, even if one surface of the lens is described as being convex, the edge portion of that surface may be concave.

[0075] Furthermore, as shown in Figures 8 and 9, the second lens 200 further includes a connecting virtual surface (which is connected to the virtual surface 103 of the first lens 100) and two side surfaces located on either side, and a curved edge is formed at the connection point between the edge of either convex surface and the corresponding side surface. Here, the curvature of the two curved edges can be set as needed.

[0076] In a third embodiment of the present invention, as shown in Figures 11 to 13, the side surface of the third lens 300 facing the second lens 200 is concave along the optical axis, and when observed along the optical axis, the optical axis direction is perpendicular to the first direction (X). Light rays projected from either of the convex portions 201 remain parallel in the first direction X after passing through the side surface of the third lens 300 facing the second lens 200. That is, they remain parallel in the left-right direction but not in the up-down direction. The side surface of the third lens 300 facing away from the second lens 200 is convex, and light rays projected from the side surface of the third lens 300 facing the second lens 200 become parallel light after passing through the side surface of the third lens 300 facing away from the second lens 200.

[0077] Due to the reversibility of light, as shown in Figures 12 and 13, the third lens 300 directs parallel light to multiple first focal points. 111 It can concentrate light to multiple first focal points 111 This is the first focal line. 110 It is located above. When observed along the optical axis (i.e., in a plan view), the light rays passing through the third lens 300 remain parallel in the first direction X. The second lens 200 is positioned on one side of the third lens 300, and the second lens 200 directs the light rays passing through the third lens 300 to multiple second focal points. 211 (That is, it can focus light to the actual focal point of the lens group at 400), and multiple second focal points. 211 It lies on the second focal line. When observed along the optical axis, the light rays that have passed through the second lens 200 are not parallel in the first direction.

[0078] In other words, the third lens 300 of the present invention focuses light only in the vertical direction, while the light rays in the horizontal direction remain parallel. That is, multiple first focal points 111 The light converges on a single focal line, the second lens 200 focuses light in the left-right direction, and the point of convergence is the actual focal point 400 (outside) of the lens group, with multiple second focal points. 211 converges on a different focal line. In the present invention, the focal length of light in the vertical direction is longer than that of light in the horizontal direction (as shown in Figure 12, the distance from the light source to the side of the third lens 300 facing away from the second lens 200, i.e., the distance from the light source to the parallel light), which is advantageous for focusing the high and low beam light distribution pattern in the vertical direction. In the present invention, the focal length of light in the horizontal direction is shorter than that of light in the vertical direction (as shown in Figure 13, the distance from the light source to the side of the second lens 200 facing the third lens 300, i.e., the distance from the light source to the parallel light in the horizontal direction), which is advantageous for the high and low beam light distribution pattern to be wide horizontally and flattened vertically, and meets the requirements for the high and low beam light distribution pattern. Furthermore, compared to the conventional single-layer single-focus focusing lens, the present invention uses two lenses (second lens 200 and third lens 300) to achieve focusing, the overall thickness is thinner than that of a single-focus focusing lens, and consequently the weight is also lighter.

[0079] Here, the first inclined surface 102 can mirror the curved total internal reflection lens 700 to form a virtual image 800. Multiple real focal points 400 (i.e., focal lines) of the lens group are located near the edge, i.e., the boundary, of the virtual image. A good light distribution pattern can be formed, and the color of the cutoff line is good with almost no chromatic dispersion.

[0080] In a third embodiment of the present invention, as shown in Figures 9 and 10, the first lens 100 further includes a second bevel 105, a third bevel 104, and a fourth bevel 107. The incident surface 101, the first bevel 102, the third bevel 104, the second bevel 105, and the fourth bevel 107 are connected in sequence. The incident surface 101 extends vertically, the first bevel 102 extends toward the second lens 200 at a first angle with respect to the incident surface 101, the fourth bevel 107 extends toward the first bevel 102 at a second angle with respect to the incident surface 101, the second bevel 105 extends toward the second lens 200 at a third angle with respect to the fourth bevel 107, and the third bevel 104 extends backward toward the first bevel 102 at a fourth angle with respect to the second bevel 105.

[0081] As an example, as shown in Figures 9, 13, and 14, any of the curved total internal reflection lenses 700 include two sides 701 (also called arc sides) and a curved side 702 that are connected to each other, the curved side 702 being connected to a third bevel 104, and both sides 701 being connected to the fourth bevel 107, with the width of the two sides 701 gradually decreasing from top to bottom. Furthermore, the curved total internal reflection lens 700 may also include two straight sides, either of which is connected to a second bevel 105 and is connected between the curved side 702 and one of the sides 701.

[0082] Note that the first lens 100 and the second lens 200 may be integrally molded. Here, in order to show the lens group (second lens 200 and third lens 300), a virtual surface 103 is used to separate the integrally molded first lens 100 and second lens 200, as shown in Figures 7 and 10. However, the virtual surface 103 does not actually exist.

[0083] Furthermore, the beam formed by conventional "concentrator + single-focus focusing lens" modules exhibits a ring-shaped spot image from the concentrator on the surface of the car's headlamp cover. This defect has drawn complaints from many manufacturers.

[0084] The structure of the curved total reflection lens 700 described above in the present invention is regular and complete, and the edges are neat and regular. Therefore, the uniformity of the spot of the headlamp cover is good, the appearance is good, and customer satisfaction is improved.

[0085] In a third embodiment of the present invention, as shown in Figures 7 to 10, the first lens 100 may further include a vertical plane 106. The vertical plane 106 is connected to a fourth inclined plane 107 and is parallel to the incident plane 101. That is, the incident plane 101 and the vertical plane 106 form a light leakage flange 600, which works in conjunction with the fourth inclined plane 107 to reduce the generation of stray light and project excess glare onto the ground.

[0086] Furthermore, since the third lens 300 of the present invention is a non-fixed focal length lens, this module design can avoid the concentration of sunlight in a point or block form, significantly reducing the risk of burnout of vehicle lighting components due to sunlight.

[0087] Furthermore, it is worth noting that, as shown in Figure 23, the solid lines in Figure 23 represent the light that affects the cutoff line, and the dotted lines represent the main beam. In other words, the middle part of the curved total internal reflection lens 700 affects the light below the final light distribution pattern, and the light at the edges of the curved total internal reflection lens 700 affects the parallel light in the middle of the final light distribution pattern, that is, it affects the shape of the final light distribution pattern.

[0088] <Fourth Example> In contrast to the third embodiment of the present invention, in the fourth embodiment of the present invention, as shown in Figures 15 to 22, the optical lens module can include a plurality of curved total internal reflection lenses 700. As shown in Figures 20 and 21, light rays emitted from an external light source 500 can enter from the incident surface 101, undergo reflection by the curved total internal reflection lens 700, and then undergo further reflection by the first inclined surface 102. Light rays reflected by the first inclined surface 102 that are parallel in the first direction X remain parallel in the first direction X after passing through the side surface of the second lens 200 facing the third lens 300. That is, light that is originally parallel in the left-right direction remains parallel in the left-right direction after passing through the side surface of the second lens 200 facing the third lens 300, but is not parallel in the up-down direction. Due to the reversibility of light, the side surface of the second lens 200 facing the third lens 300 and the third lens 300 include a plurality of actual focal points 400.

[0089] Furthermore, as shown in Figures 16 and 17, the second lens 200 further includes a connecting virtual surface (which is connected to the virtual surface 103 of the first lens 100) and two side surfaces located on either side. Here, the curvature of the side surface of the second lens 200 facing the third lens 300 can be set as needed, which is advantageous for increasing the width of the light distribution pattern.

[0090] In embodiments of the present invention, as shown in Figures 19 to 21, the side surface of the third lens 300 facing the second lens 200 is concave along the optical axis, and the light rays projected from the side surface of the second lens 200 facing the third lens 300 remain parallel in the first direction X after passing through the side surface of the third lens 300 facing the second lens 200. That is, they remain parallel in the left-right direction but not in the up-down direction. The side surface of the third lens 300 facing away from the second lens 200 is convex, and the light rays projected from the side surface of the third lens 300 facing the second lens 200 become parallel light after passing through the side surface of the third lens 300 facing away from the second lens 200.

[0091] Due to the reversibility of light, as shown in Figures 20 and 21, the third lens 300 directs parallel light to multiple first focal points. 111 It can concentrate light to multiple first focal points 111 This is the first focal line. 110 It is located above. When observed along the optical axis (i.e., in a plan view), the light rays passing through the third lens 300 remain parallel in the first direction X. The second lens 200 is positioned on one side of the third lens 300, and the second lens 200 directs the light rays passing through the third lens 300 to multiple second focal points. 211 (That is, it can focus light to the actual focal point of the lens group at 400), and multiple second focal points. 211 It lies on the second focal line. When observed along the optical axis (i.e., in a plan view), the light rays that have passed through the second lens 200 remain parallel in the first direction X.

[0092] In other words, the third lens 300 of the present invention focuses light only in the vertical direction, while the light rays remain parallel in the horizontal direction. That is, multiple first focal points 111 The rays converge on a single focal line, the second lens 200 also focuses light in the vertical direction, the rays remain parallel in the horizontal direction, and the point of convergence becomes the actual focal point 400 (outside) of the lens group, while the multiple second focal points converge on different focal lines.

[0093] This invention focuses and forms an image in the vertical direction, but the direction of the light rays does not change (i.e., no image is formed) in the horizontal direction. The curved total internal reflection lens 700 can diverge the light distribution pattern to the left and right by crossing the reflected light rays left and right, and the final light distribution pattern is, in other words, a representation of the reflected beam of the curved total internal reflection lens 700. That is, the edge of the curved total internal reflection lens 700 becomes the boundary line that forms the cutoff line of the low beam light distribution pattern. Furthermore, compared to conventional single-layer single-focus focusing lenses, this invention achieves focusing by sharing two lenses (second lens 200 and third lens 300), resulting in a thinner overall thickness and consequently a lighter weight than a single-focus focusing lens.

[0094] Here, the first inclined surface 102 can mirror the curved total internal reflection lens 700 to form a virtual image 800. Multiple real focal points 400 (i.e., focal lines) of the lens group are located near the edge, i.e., the boundary, of the virtual image. A good light distribution pattern can be formed, the color of the cutoff line is good, and almost no chromatic dispersion occurs.

[0095] In the fourth embodiment of the present invention, the structure of the first lens 100 and the curved total internal reflection lens 700 may be the same as in the third embodiment, and a detailed explanation is omitted here. Furthermore, in the third and fourth embodiments, an additional contact surface may be provided between the first inclined surface 102 and the incident surface 101.

[0096] <Fifth Example> A fourth aspect of the present invention provides a vehicle lighting device, which includes an optical lens module according to the third or fourth embodiment described above.

[0097] Furthermore, the vehicle lighting fixture may further include multiple light sources 500 (e.g., LED lights) and multiple circuit boards, with a one-to-one correspondence between the multiple light sources 500 and the multiple circuit boards, and a one-to-one correspondence between the multiple light sources 500 and multiple curved total reflection lenses. The long side of any of the circuit boards extends vertically, i.e., the circuit boards are positioned perpendicular to the optical axis. Such a layout allows for good thermal circulation of the module, is advantageous for heat dissipation, and is easy to install.

[0098] The optical lens module according to the present invention includes a first lens, a lens group, and a curved total internal reflection lens. Here, the lens group includes a second lens and a third lens, the second lens is integrally molded with the first lens, the third lens is installed on one side of the second lens, the actual focal point of the lens group is located outside the second lens, one side of the first lens facing away from the third lens includes a connected incident surface and a first bevel, the curved total internal reflection lens is installed below the first bevel, and one side of the curved total internal reflection lens facing away from the first bevel is convex. In the present invention, light rays emitted from an external light source can enter from the incident surface, undergo reflection by the curved total internal reflection lens, and then undergo further reflection by the first bevel. The lens group can project the light rays reflected by the first bevel as parallel light. That is, the light rays after reflection by the first bevel can be projected as parallel light by the lens group. The present invention shortens the length of the module by folding the optical path. Furthermore, the final light distribution pattern of the optical (low-beam) lens module according to the present invention is the image of the reflected beam of the curved total internal reflection lens, and the edge of the curved total internal reflection lens becomes the boundary line that forms the cutoff line of the low-beam light distribution pattern. Compared to conventional lens structures, the present invention can form a good cutoff line color and virtually eliminates color dispersion.

[0099] <Sixth Example> The fifth aspect of this invention is a lens group This solution addresses the problem that existing focusing lenses cannot be applied to designs such as large apertures or bar-shaped apertures, and the poor controllability of high and low beams with a wide light distribution pattern that is flattened vertically and wide horizontally.

[0100] With the advancement of lighting technology for vehicle lighting fixtures, high and low beam lighting lens modules are becoming increasingly widespread, and horizontal module designs are one of the industry's development trends. Before the invention of this invention, conventional technology generally employed single-layer, single-focus focusing lenses. Such conventional methods are unsuitable for large aperture or bar-shaped aperture designs. This is because as the horizontal aperture length increases, the lens thickness and weight also increase accordingly, which is detrimental to the concepts of weight reduction, energy saving, and cost reduction. Furthermore, conventional single-layer, single-focus lenses have the same degree of light focusing in both the horizontal and vertical directions, resulting in poor controllability for high and low beam light distribution patterns that are flattened vertically and wide horizontally.

[0101] In view of this, the fifth aspect of the present invention is a lens group Provides lenses. group The system includes a third lens 300 and a second lens 200. Here, the third lens 300 can focus parallel light onto a plurality of first focal points 111, the plurality of first focal points 111 are on the first focal line 110. When observed along the optical axis (i.e., in a plan view), the light rays that have passed through the third lens 300 remain parallel in the first direction X. The second lens 200 is installed on one side of the third lens 300, and the second lens 200 can focus the light rays that have passed through the third lens 300 onto a plurality of second focal points 211, the plurality of second focal points 211 are on the second focal line. When observed along the optical axis, the light rays that have passed through the second lens 200 are not parallel in the first direction X.

[0102] In other words, the third lens 300 of the present invention focuses light only in the vertical direction (as shown in Figure 28), and the light rays remain parallel in the horizontal direction (as shown in Figure 29). That is, multiple first focal points 111 converge on a single focal line (as shown in Figures 26, 27, and 29). The second lens 200 focuses light horizontally (as shown in Figure 25), and the position of the focal point (second focal point 211) is adjustable (e.g., by adjusting curvature, distance, etc.), so that multiple second focal points 211 converge on a different focal line (as shown in Figures 24 and 25). Due to the reversibility of light, field workers can attach multiple light sources as needed, and the light rays emitted from any of the multiple light sources can diverge from the corresponding second focal points 211 and are ultimately diverged into parallel light by the third lens 300. In the present invention, the focal length of light in the vertical direction is longer than that of light in the horizontal direction (as shown in Figure 24, the distance from the second focal point 211 to the side of the third lens 300 facing away from the second lens 200, i.e., the distance from the second focal point 211 to the parallel light), making it suitable for focusing light in the vertical direction of the high / low beam light distribution pattern. In the present invention, the focal length of light in the horizontal direction is shorter than that of light in the vertical direction (as shown in Figure 25, the distance from the second focal point 211 to the side of the second lens 200 facing the third lens 300, i.e., the distance from the second focal point 211 to the parallel light in the horizontal direction), making it suitable for widening the high / low beam light distribution pattern horizontally and meeting the design requirements. Furthermore, compared to conventional single-layer single-focus focusing lenses, the present invention achieves focusing by sharing two lenses, resulting in a thinner overall thickness than a single-focus focusing lens and a corresponding reduction in weight. The specific structures of the third lens 300 and the second lens 200 will be described in detail below.

[0103] In the sixth embodiment of the present invention, as shown in Figures 26, 27, and 30, the side surface of the third lens 300 facing the second lens 200 is concave along the optical axis, and the side surface of the third lens 300 facing away from the second lens 200 is convex along the optical axis. Here, the expression that one surface of the lens is convex along the optical axis means that the region near the axis of the corresponding surface is convex, and the expression that one surface of the lens is concave along the optical axis means that the region near the axis of the corresponding surface is concave. Therefore, even if it is described that one surface of the lens is convex, the edge portion of that one surface of the lens may be concave. Similarly, even if it is described that one surface of the lens is concave, the edge portion of that one surface of the lens may be convex.

[0104] As an example, the front surface of the third lens 300 (the surface facing away from the second lens 200) may be a symmetrical surface, a cylindrical surface, or an asymmetrically inclined surface. The back surface of the lens (the surface facing the second lens 200) is a free-form surface calculated based on the front surface. Whatever the structure, the main feature is that it is a focal lens, meaning that when parallel light in the direction of the optical axis passes through the lens, the light rays converge into a single straight line.

[0105] In the sixth embodiment of the present invention, Figures 26 and 27 show schematic diagrams of the third lens 300 and optical path in two examples of the present invention, Figure 28 shows a side view of the third lens 300 and optical path according to the sixth embodiment of the present invention, and Figure 29 shows a plan view of the third lens 300 and optical path according to the sixth embodiment of the present invention.

[0106] Furthermore, since the third lens 300 of the present invention is a non-fixed focal length lens, this module design can avoid the concentration of sunlight in a point or block form, significantly reducing the risk of burnout of vehicle lighting components due to sunlight.

[0107] In the sixth embodiment of the present invention, the second lens 200 includes a plurality of real focal points, and the plurality of second focal points 211 coincide with the plurality of real focal points, that is, they overlap in a one-to-one correspondence.

[0108] As an example, Figure 30 shows a lens according to the sixth embodiment of the present invention. group Figure 24 shows a schematic diagram of the entire structure, and Figure 24 shows a lens according to the sixth embodiment of the present invention. group Figure 25 shows a side view of the optical path and a lens according to the sixth embodiment of the present invention. group And a plan view of the optical path is shown.

[0109] In the sixth embodiment of the present invention, as shown in Figure 30, one side of the second lens 200 facing the third lens 300 includes a plurality of protrusions, the convex surface of any of the protrusions is convex along the optical axis, any of the convex surfaces and the third lens 300 include one real focal point, and any of the convex surfaces can focus the light rays that have passed through the third lens 300 to one second focal point 211. Here, the expression that one surface of the lens is convex along the optical axis means that the region near the axis of the corresponding surface is convex. Therefore, even if it is described that one surface of the lens is convex, the edge portion of that one surface of the lens may be concave.

[0110] Furthermore, as shown in Figure 30, the second lens 200 further includes a bevel facing the convex surface and two side surfaces on either side, with the first direction penetrating the two side surfaces, and a curved edge formed at the connection point between the edge of either convex surface and the corresponding side surface. Here, the curvature of the two curved edges can be set as needed.

[0111] In other words, in this embodiment, the second lens 200 is merely one surface of the medium, and one of the focusing points (second focal point 211) is located within the medium. Parallel light, i.e., light in the vertical and horizontal directions, is focused at the actual focal point within the medium of the second lens 200. Furthermore, the actual focal point and virtual focal point of the second lens 200 may coincide or be separated, and the actual focal point may be in front of or behind the virtual focal point, and can be specifically set according to the needs of the field worker.

[0112] Here, both the first focal line 110 and the second focal line are parallel to the first direction X, and the optical axis direction is perpendicular to the first direction X.

[0113] Lens of the present invention group In this configuration, two layers of lenses form a confocal system to achieve projection imaging of the high and low beam light distribution patterns. The resulting image is the image of the beam at the actual focal point within the second lens medium.

[0114] <Seventh Example> A sixth aspect of the present invention provides a vehicle light fixture, the vehicle light fixture comprising a lens according to the sixth embodiment described above. group Includes.

[0115] The vehicle lighting device further includes a plurality of light sources and a first lens, the plurality of light sources corresponding one-to-one with a plurality of second focal points 211, and light rays emitted from any of the light sources can pass through the first lens and diverge from the corresponding second focal points 211. In this embodiment, as shown in Figures 25 and 30, there may be two light sources (LED light sources).

[0116] Furthermore, the incident and focusing portions of the LED light source, and the first lens (the first lens is not shown in the drawing), may be integrally formed with the second lens to shorten the dimensional chain.

[0117] Lens according to the present invention group The system includes a third lens and a second lens, where the third lens can focus parallel light into a plurality of first focal points, the plurality of first focal points are on a first focal line, and when observed along the optical axis, the light rays that have passed through the third lens remain parallel in a first direction; the second lens is positioned on one side of the third lens, and the second lens can focus the light rays that have passed through the third lens into a plurality of second focal points, the plurality of second focal points are on a second focal line, and when observed along the optical axis, the light rays that have passed through the second lens are not parallel in a first direction.

[0118] In other words, the third lens of the present invention focuses light only in the vertical direction, while the light rays remain parallel in the horizontal direction. That is, multiple first focal points converge on a single focal line, the second lens focuses light horizontally, and the position of the focusing point (second focal point) is adjustable (for example, by adjusting the curvature, distance, etc.), and multiple second focal points converge on a different focal line. Due to the reversibility of light, field workers can attach multiple light sources as needed, and the light rays emitted from any of the multiple light sources can be diverged by the corresponding second focal point and finally diverged into parallel light by the third lens. In the present invention, the focal length of light in the vertical direction is longer than that of light in the horizontal direction (the distance from the second focal point to the side of the third lens facing away from the second lens, i.e., the distance from the second focal point to the parallel light), making it suitable for vertical focusing of high and low beam light distribution patterns. In this invention, the focal length of light in the left-right direction is shorter than that of light in the up-down direction (the distance from the second focal point to the side of the second lens facing the third lens, i.e., the distance from the second focal point to the parallel light in the left-right direction), which is suitable for widening the left-right high / low beam light distribution pattern and meets the design requirements.

[0119] Furthermore, compared to conventional single-layer, single-focus focusing lenses, this invention uses two lenses to focus light, resulting in a thinner overall thickness and consequently, a lighter weight. It overcomes the limitations imposed by thickness and weight on single-focus lenses, meeting the needs for energy conservation, emission reduction, and cost reduction. By achieving light separation through free-form surface technology, the lens thickness, volume, and weight can be significantly reduced, aligning with the principles of energy conservation and carbon neutrality.

[0120] Finally, it should be noted that the above embodiments are merely specific embodiments for illustrating the technical means of the present invention and are not limitations to the present invention; the scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above embodiments, as will be understood by those skilled in the art, any person ordinary in the art can modify, make easily conceivable changes to, or substitute some of the technical configurations described in the above embodiments within the scope of the technology disclosed by the present invention. These modifications, changes, or substitutions do not deviate from the essence of the relevant technical proposal from the technical idea and scope of the embodiments of the present invention, and should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be the same as the scope of protection under the claims. [Explanation of Symbols]

[0121] 100 First Lens 101 Incidence plane 102 First Slope 103 Virtual Surface 104 Third Slope 105 Second Slope 106 Vertical plane 107 Fourth Slope 200 Second lens 201 Convex part 300 Third Lens 400 Actual Focal Length 800 Illusion 500 light source 600 Light Leak Flange 700 Curved Total Internal Reflection Lens 701 Side 702 Curved edge X 1st direction 110 1st focal line 111 1st focus 211 Second focus

Claims

1. It is an optical lens, The optical lens includes a first lens (100), a lens group, and a curved total internal reflection lens (700), the lens group includes a second lens (200) and a third lens (300), the second lens (200) is integrally molded with the first lens (100), the third lens (300) is installed on one side of the second lens (200), and the actual focal point (400) of the lens group is located within the second lens (200). One side of the first lens (100) facing away from the third lens (300) includes an incident surface (101) and a first inclined surface (102) that are connected to each other, the curved total internal reflection lens (700) is provided below the first inclined surface (102), and one side of the curved total internal reflection lens (700) facing away from the first inclined surface (102) is convex. Light rays emitted from an external light source can enter through the incident surface (101), are reflected by the curved total internal reflection lens (700), then reflected by the first inclined surface (102), and focused at the actual focal point (400). The light rays that have passed through the actual focal point (400) are projected as parallel light by the lens group. An optical lens characterized by the following features.

2. The aforementioned lens group includes a plurality of actual focal points (400) and a plurality of curved total internal reflection lenses (700), All of the aforementioned curved total internal reflection lenses (700) are provided below the first inclined surface (102), and each of the aforementioned curved total internal reflection lenses (700) corresponds one-to-one with the aforementioned multiple real focal points (400). Light rays emitted from an external light source can enter through the incident surface (101), are reflected by the curved total internal reflection lens (700), and then reflected again by the first inclined surface (102), and are focused at the corresponding real focal point (400). The light rays that have passed through the real focal point (400) are projected as parallel light by the lens group. The optical lens according to feature 1.

3. One side of the second lens (200) facing the third lens (300) includes a plurality of protrusions (201), the convex surface of any of the protrusions (201) is convex along the optical axis, and any of the protrusions (201) includes one common real focal point (400) with the third lens (300). When observed along the optical axis, the light rays diverging from the actual focal point (400) remain parallel in the first direction (X) after passing through the corresponding protrusion (201), and the optical axis is perpendicular to the first direction (X). The optical lens according to feature 2.

4. The side surface of the third lens (300) facing the second lens (200) is concave along the optical axis. When observed along the optical axis, the light rays passing through the side of the third lens (300) facing the second lens (200) remain parallel in the first direction (X). The side surface of the third lens (300) facing away from the second lens (200) is convex along the optical axis. Light rays emitted from the side of the third lens (300) facing the second lens (200) and passing through the side of the third lens (300) facing away from the second lens (200) are parallel light rays. The optical lens according to feature 3.

5. The first inclined surface (102) reflects the mirror image of the curved total internal reflection lens (700) to form a virtual image, and the focal point of the virtual image coincides with the actual focal point (400) of the lens group. The optical lens according to feature 1.

6. The first lens (100) further includes a second slope (105), a third slope (104), and a vertical plane (106), The incident surface (101), the first inclined surface (102), the third inclined surface (104), the second inclined surface (105), and the vertical plane (106) are connected in order. The incident surface (101) extends in the vertical direction, and the first inclined surface (102) extends toward the second lens (200) at a first angle with respect to the incident surface (101). The second inclined surface (105) extends toward the second lens (200) at a second angle with respect to the incident surface (101), the third inclined surface (104) faces away from the first inclined surface (102) at a third angle with respect to the second inclined surface (105), and the vertical plane (106) is parallel to the incident surface (101). The edge of any of the curved total internal reflection lenses (700) is connected to the second slope (105), the third slope (104), and the vertical plane (106). The optical lens according to feature 3.

7. Each of the curved total internal reflection lenses (700) includes two opposing sides (701) and two opposing curved edges (702), the two sides (701) each connected to the second slope (105), and the two curved edges (702) each connected to the third slope (104) and a vertical plane (106), The second lens (200) further includes two sides, the two sides facing each other in a first direction (X), and a boundary line is formed at the connection point between the edge of either of the convex surfaces and the corresponding side. The optical lens according to feature 6.

8. The dimensions of the incident surface (101) and the vertical plane (106) in the vertical direction are both larger than the dimensions of the curved edge (702) connected to the vertical plane (106) in the vertical direction. The optical lens according to feature 7.

9. Vehicle lighting fixtures, Including an optical lens according to any one of claims 1 to 8, A vehicle lighting device characterized by the following features.

10. The vehicle lighting device further includes a plurality of light sources (500) and a plurality of circuit boards, wherein the plurality of light sources (500) correspond one-to-one with the plurality of circuit boards, and the plurality of light sources (500) correspond one-to-one with a plurality of actual focal points (400), and the long side of any of the circuit boards extends in the vertical direction. The vehicle lighting device according to feature 9.

11. An optical lens module, The lens comprises a first lens (100), a lens group, and a curved total internal reflection lens (700), the lens group comprising a second lens (200) and a third lens (300), the second lens (200) being integrally molded with the first lens (100), the third lens (300) being provided on one side of the second lens (200), and the actual focal point (400) of the lens group being located outside the second lens (200). One side of the first lens (100) facing away from the third lens (300) includes an incident surface (101) and a first inclined surface (102) connected to each other, the curved total internal reflection lens (700) is provided below the first inclined surface (102), and one side of the curved total internal reflection lens (700) facing away from the first inclined surface (102) is convex. Light rays emitted from an external light source can enter from the incident surface (101), are reflected by the curved total internal reflection lens (700), and then reflected by the first inclined surface (102). The lens group is configured to project the light rays reflected by the first inclined surface (102) as parallel light. An optical lens module characterized by the following features.

12. The optical lens module includes a plurality of curved total internal reflection lenses (700), and one side of the second lens (200) facing the third lens (300) includes a plurality of protrusions (201), the convex surface of any of the protrusions (201) is convex along the optical axis, and the plurality of protrusions (201) correspond one-to-one with the plurality of curved total internal reflection lenses (700). Light rays emitted from an external light source can enter through the incident surface (101), are reflected by the corresponding curved total internal reflection lens (700), and then reflected by the first inclined surface (102). When observed along the optical axis, the light rays reflected by the first inclined surface (102) pass through the corresponding convex portion (201) and remain parallel in the first direction (X), with the optical axis perpendicular to the first direction (X). The optical lens module according to feature 11.

13. The side surface of the third lens (300) facing the second lens (200) is concave along the optical axis. When observed along the optical axis, the light rays emitted from any of the convex portions (201) pass through the side of the third lens (300) facing the second lens (200), and then remain parallel in the first direction (X). The side surface of the third lens (300) facing away from the second lens (200) is convex in shape. Light rays emitted from the side of the third lens (300) facing the second lens (200) and passing through the side of the third lens (300) facing away from the second lens (200) are parallel light rays. The optical lens module according to feature 12.

14. The optical lens module includes a plurality of curved total internal reflection lenses (700), and light rays emitted from an external light source can enter from the incident surface (101), are reflected by the curved total internal reflection lenses (700), and then reflected by the first inclined surface (102). When observed along the optical axis, the light rays reflected by the first inclined surface (102) that are parallel in the first direction (X) pass through the side of the second lens (200) facing the third lens (300) and then remain parallel in the first direction (X). The optical lens module according to feature 11.

15. The side surface of the third lens (300) facing the second lens (200) is concave along the optical axis. When observed along the optical axis, the light rays emitted from the side of the second lens (200) facing the third lens (300) pass through the side of the third lens (300) facing the second lens (200) and then remain parallel in the first direction (X). The side surface of the third lens (300) facing away from the second lens (200) is convex in shape. Light rays emitted from the side of the third lens (300) facing the second lens (200) and passing through the side of the third lens (300) facing away from the second lens (200) are parallel light rays. The optical lens module according to feature 14.

16. The first lens (100) further includes a second inclined surface (105), a third inclined surface (104), and a fourth inclined surface (107), and the incident surface (101), the first inclined surface (102), the third inclined surface (104), the second inclined surface (105), and the fourth inclined surface (107) are connected in order. The incident surface (101) extends in the vertical direction, the first inclined surface (102) extends toward the second lens (200) at a first angle with respect to the incident surface (101), the fourth inclined surface (107) extends toward the first inclined surface (102) at a second angle with respect to the incident surface (101), the second inclined surface (105) extends toward the second lens (200) at a third angle with respect to the fourth inclined surface (107), and the third inclined surface (104) extends backward from the first inclined surface (102) at a fourth angle with respect to the second inclined surface (105). Each of the curved total internal reflection lenses (700) includes two sides (701) and a curved side (702) connected to each other, the curved side (702) being connected to the third slope (104), Both of the aforementioned sides (701) are connected to the fourth slope (107), The width of the two sides (701) decreases gradually from top to bottom. The optical lens module according to feature 11.

17. The first lens (100) further includes a vertical plane (106), the vertical plane (106) is connected to the fourth inclined plane (107), and the vertical plane (106) is parallel to the incident plane (101). The optical lens module according to feature 16.

18. The first inclined surface (102) can reflect the mirror image of the curved total internal reflection lens (700) to form a virtual image (800), and the actual focal point (400) of the lens group is located at the edge of the virtual image. The optical lens module according to feature 16.

19. Vehicle lighting fixtures, Including an optical lens module according to any one of claims 12 to 18, A vehicle lighting device characterized by the following features.

20. The vehicle lighting fixture further includes a plurality of light sources (500) and a plurality of circuit boards, The plurality of light sources (500) and the plurality of circuit boards correspond one-to-one, and the plurality of light sources (500) and the plurality of curved total reflection lenses (700) correspond one-to-one, The longer side of any of the circuit boards extends in the vertical direction. The vehicle lighting device according to feature 19.

21. It is a lens module, The lens module includes a third lens (300) and a second lens (200), The third lens (300) is capable of focusing parallel light into a plurality of first focal points (111), the plurality of first focal points (111) are on the first focal line (110), and when observed along the optical axis, the light rays that have passed through the third lens (300) remain parallel in the first direction (X). The second lens (200) is provided on one side of the third lens (300), and the second lens (200) is capable of focusing light rays that have passed through the third lens (300) to a plurality of second focal points (211), the plurality of second focal points (211) are on the second focal line, and when observed along the optical axis, the light rays that have passed through the second lens (200) are not parallel in the first direction (X). A lens module characterized by the following features.

22. Both the first focal line (110) and the second focal line are parallel to the first direction (X), and the optical axis direction is perpendicular to the first direction (X). The lens module according to feature 21.

23. The second focal line is located within the second lens (200). The lens module according to feature 21.

24. The lens module includes a plurality of real focal points, and the plurality of second focal points (211) coincide with the plurality of real focal points. The lens module according to feature 21.

25. One side of the second lens (200) facing the third lens (300) includes a plurality of protrusions, the convex surface of any of the protrusions is convex along the optical axis, and any of the convex surfaces has a single real focal point with the third lens (300). Any of the aforementioned convex surfaces is capable of focusing the light rays that have passed through the third lens (300) to one second focal point (211). The lens module according to feature 21.

26. The second lens (200) further includes a slope facing the convex surface and two sides on both sides, A curved edge is formed at the connection point between the edge of any of the convex surfaces and the corresponding side surface. The lens module according to feature 25.

27. The side surface of the third lens (300) facing the second lens (200) is concave along the optical axis. The side surface of the third lens (300) facing away from the second lens (200) is convex along the optical axis. The lens module according to feature 21.

28. Vehicle lighting fixtures, A lens module including the one described in any one of claims 21 to 27, A vehicle lighting device characterized by the following features.

29. The aforementioned vehicle lighting device further includes a plurality of light sources and a first lens, The plurality of light sources correspond one-to-one with the plurality of second focal points (211), Light rays emitted from any of the aforementioned light sources can diverge from the corresponding second focal point (211) after passing through the first lens. The vehicle lighting device according to feature 28.

30. The first lens is integrally molded with the second lens (200). The vehicle lighting device according to feature 29.

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