CN116221646A

CN116221646A - Optical lens and car lamp

Info

Publication number: CN116221646A
Application number: CN202310187410.0A
Authority: CN
Inventors: 袁致旺
Original assignee: Mind Electronics Appliance Co Ltd
Current assignee: Mind Electronics Appliance Co Ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-06-06

Abstract

The application relates to the field of car lamps, in particular to an optical lens and a car lamp. Including first lens, lens group and curved surface total reflection lens, the lens group includes second lens and third lens, second lens and first lens integrated into one piece, the third lens sets up in one side of second lens, the real focus of lens group is located the second lens, one side that first lens was facing away from the third lens is including income plain noodles and the first inclined plane of being connected each other, curved surface total reflection lens sets up in the below on first inclined plane, curved surface total reflection lens is the protrusion in one side of facing away from first inclined plane, the light that the outside light emitting source launched can get into by income plain noodles, through curved surface total reflection lens reflection, through first inclined plane reflection again, assemble real focus, be projected into parallel light by the lens group with the light through real focus. The problems that the existing high beam and low beam lens module is large in size in the axial direction of a car body, and the high beam type color is locally yellow and poor in appearance are solved.

Description

Optical lens and car lamp

Technical Field

The application relates to the field of car lamps, in particular to an optical lens and a car lamp.

Background

With the development of car light illumination technology, the high-beam and low-beam illumination lens modules are becoming popular, but the conventional high-beam module with a 'condenser and single focus focusing lens' scheme is generally larger in size along the axial direction of a car body.

In addition, in the existing single-focus lens, in order to improve the far-reaching illumination intensity, the non-central condenser light deflection angle is large, and the far-reaching type color is locally yellow, so that the appearance is poor.

Disclosure of Invention

The purpose of this application is to provide an optical lens and car light to longer volume is great in the current far-reaching headlamp lens module automobile body axial direction has been solved, and the local yellowing of far-reaching headlamp type colour, problem that the impression is not good.

According to the first aspect of the application, an optical lens is provided, the optical lens comprises a first lens, a lens group and a curved surface total reflection lens, the lens group comprises a second lens and a third lens, the second lens and the first lens are integrally formed, the third lens is arranged on one side of the second lens, a real focus of the lens group is positioned in the second lens, one side of the first lens, which is opposite to the third lens, comprises a light inlet surface and a first inclined surface which are connected with each other, the curved surface total reflection lens is arranged below the first inclined surface, one side of the curved surface total reflection lens, which is opposite to the first inclined surface, is convex, light emitted by an external light emitting source can enter from the light inlet surface, is reflected by the curved surface total reflection lens, is reflected by the first inclined surface, is converged to the real focus, and the light passing through the real focus is projected into parallel light by the lens group.

In any of the above technical solutions, further, the lens group includes a plurality of real focal points and a plurality of curved surface total reflection lenses, the plurality of curved surface total reflection lenses are all disposed below the first inclined plane, the plurality of curved surface total reflection lenses are in one-to-one correspondence with the plurality of real focal points, light emitted by the external light source can enter from the light incident surface, be reflected by the curved surface total reflection lenses, be reflected by the first inclined plane, be converged to the corresponding real focal points, and be projected into parallel light by the lens group.

In any of the above-mentioned technical solutions, further, a side of the second lens facing the third lens includes a plurality of convex portions, a convex surface of any one of the convex portions is convex along the optical axis, any one of the convex portions and the third lens together include a real focal point, when viewed along the optical axis direction, light rays diverging from the real focal point after passing through the corresponding convex portion are kept parallel in a first direction, and the optical axis direction is perpendicular to the first direction.

In any of the above-mentioned aspects, further, a side surface of the third lens facing the second lens is concave along the optical axis, and when viewed along the optical axis direction, light rays passing through the side surface of the third lens facing the second lens remain parallel in the first direction, a side surface of the third lens facing away from the second lens is convex along the optical axis, and light rays projected by the side surface of the third lens facing the second lens pass through the side surface of the third lens facing away from the second lens and are parallel.

In any of the above technical solutions, further, the inclined plane may mirror the curved total reflection lens into a virtual image, where a convergence point of the virtual image coincides with a real focal point of the lens group.

In any of the above technical solutions, further, the first lens further includes a second inclined plane, a third inclined plane and a vertical plane, the light incident surface, the first inclined plane, the third inclined plane, the second inclined plane and the vertical plane are sequentially connected, the light incident surface extends in a vertical direction, the first inclined plane forms a first angle with respect to the light incident surface and extends towards the second lens, the second inclined plane forms a second angle with respect to the light incident surface and extends towards the second lens, the third inclined plane forms a third angle with respect to the second inclined plane and faces away from the first inclined plane, the vertical plane is parallel to the light incident surface, and an edge of any curved surface total reflection lens is connected with the second inclined plane, the third inclined plane and the vertical plane.

In any of the above technical solutions, further, any one of the curved total reflection lenses includes two opposite sides and two opposite curved sides, the two sides are both connected to the second inclined plane, the two curved sides are respectively connected to the third inclined plane and the vertical plane, the second lens further includes two sides, the two sides are opposite to each other in the first direction, and a boundary is formed at a junction between an edge of any one of the convex surfaces and the corresponding side.

In any of the above technical solutions, further, the dimensions of the light incident surface and the vertical plane in the vertical direction are larger than the dimensions of the curved edge connected with the vertical plane in the vertical direction.

According to a second aspect of the present application there is provided a vehicle lamp comprising an optical lens as described above.

In any of the above technical solutions, further, the vehicle lamp further includes a plurality of light emitting sources and a plurality of circuit boards, the plurality of light emitting sources are in one-to-one correspondence with the plurality of real focuses, and a long side of any circuit board extends in a vertical direction.

According to the optical lens of this application, optical lens includes first lens, lens group and curved surface total reflection lens, and wherein, lens group includes second lens and third lens, and second lens and first lens integrated into one piece, third lens set up in one side of second lens, and the real focus of lens group is located the second lens, and the first lens of this application is one side of being opposite to third lens including the income plain noodles and the first inclined plane that connect each other, curved surface total reflection lens set up in the below of first inclined plane, curved surface total reflection lens is the convex side of being opposite to first inclined plane, and the light that the outside light emitting source launched can be got into by the income plain noodles, through curved surface total reflection lens reflection, again through first inclined plane reflection, assemble to real focus by lens group with the light projection of passing real focus for parallel light, that the real focus of lens group is located curved surface total reflection lens's reflection light's collection point department. The light path of this application is folding, has shortened the length of module, and the final light type of optical lens (far-reaching headlamp) that this application provided is the formation of image of the light beam of lens group real focus department promptly, and then the luminance, the colour and the homogeneity of the far-reaching headlamp type of optical lens projection of this application are all good.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 illustrates an optical path side view of an optical lens according to an embodiment of the present application;

FIG. 2 illustrates an optical path top view of an optical lens according to an embodiment of the present application;

FIG. 3 shows a schematic structural view of a first lens and a second lens integrally formed according to an embodiment of the present application;

FIG. 4 shows a schematic view of the other view of FIG. 3;

FIG. 5 shows a side view of FIG. 3;

fig. 6 shows a schematic structural view of a third lens according to an embodiment of the present application.

Icon: 100-a first lens; 101-a light incident surface; 102-a first incline; 103-virtual plane; 104-a third incline; 105-a second ramp; 106-a vertical plane; 200-a second lens; 201-a protrusion; 300-a third lens; 400-real focus; 500-a light emitting source; 600-light leakage flanging; 700-curved total reflection lens; 701-side; 702-curved sides; a first direction X.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

The first aspect of the application provides an optical lens to longer volume is great in the current far-reaching headlamp lens module automobile body axial direction has been solved, and the local yellowing of far-reaching headlamp type colour, the not good problem of impression.

Before this application was proposed, in the present single focus lens, far-reaching headlamp module was in order to improve far-reaching headlamp illuminance, and non-central spotlight ware light deflection angle is great, and far-reaching headlamp type colour local yellowing, and the impression is not good.

In view of this, according to a first aspect of the present application, there is provided an optical lens, the optical lens includes a first lens 100, a lens group and a curved total reflection lens 700, wherein the lens group includes a second lens 200 and a third lens 300, the second lens 200 is integrally formed with the first lens 100, the third lens 300 is disposed on one side of the second lens 200, a real focal point 400 of the lens group is located in the second lens 200, a side of the first lens 100 facing away from the third lens 300 of the present application includes an incident surface 101 and a first inclined surface 102 connected to each other, the curved total reflection lens 700 is disposed below the first inclined surface 102, a side of the curved total reflection lens 700 facing away from the first inclined surface 102 is convex, light emitted by the external light emitting source 500 can enter from the incident surface 101, reflect through the curved total reflection lens 700, and then reflect through the first inclined surface 102, converge to the real focal point 400, and at a converging point of reflected light of the curved total reflection lens 700 where the light passing through the real focal point 400 is projected by the lens group as parallel light. The light path of this application is folding, has shortened the length of module, and the final light type of optical lens (far-reaching headlamp) that this application provided is the formation of image of the light beam of lens group real focus 400 department promptly, and then the luminance, the colour and the homogeneity of the far-reaching headlamp type of optical lens projection of this application are all good. The specific structures of the first lens 100, the lens group, and the curved total reflection lens 700 will be described in detail below.

In the embodiment of the application, as shown in fig. 1 to 5, the lens group includes a plurality of real focal points 400, the curved surface total reflection lenses 700 are plural, the plurality of curved surface total reflection lenses 700 are all disposed below the first inclined planes 102, the plurality of curved surface total reflection lenses 700 are in one-to-one correspondence with the plurality of real focal points 400, the light emitted by the light emitting source 500 can enter from the light incident surface 101, be reflected by the curved surface total reflection lenses 700, be reflected by the first inclined planes 102, be converged to the corresponding real focal points 400, and be projected into parallel light by the lens group.

As an example, as shown in fig. 2 to 4, the side of the second lens 200 facing the third lens 300 includes a plurality of convex portions 201, the convex surface of any convex portion 201 is convex along the optical axis, any convex portion 201 includes one real focal point 400 with respect to the third lens 300, the light rays emitted from the real focal point 400 after passing through the corresponding convex portion 201 are kept parallel in the first direction X, i.e., the up-down direction is not parallel, and the left-right direction is kept parallel, depending on the reversibility of the light, i.e., any convex surface is convex with respect to the third lens 300 including one real focal point 400, and here, the expression that one surface of the lens is convex along the optical axis means that the paraxial region of the corresponding surface is convex, and therefore, even when one surface of the lens is described as convex, the edge portion of the one surface of the lens may be concave.

In addition, as shown in fig. 3, the second lens 200 further includes a connecting virtual surface (the connecting virtual surface is connected with the virtual surface 103 of the first lens 100) and two side surfaces located on two sides, and the first direction X can pass through the two side surfaces, and a curved edge (a side line) is formed at a connection position between an edge of any convex surface and a corresponding side surface. Here, the curvatures of the two curved sides may be set as desired.

In the embodiment of the present application, as shown in fig. 1, 2 and 6, a side surface of the third lens 300 facing the second lens 200 is concave along the optical axis, when viewed along the optical axis direction, a light ray projected by any one of the convex portions 201 passes through a side surface of the third lens 300 facing the second lens 200, and is kept parallel in the first direction X, that is, the left-right direction is kept parallel, and the up-down direction is not parallel, a side surface of the third lens 300 facing away from the second lens 200 is convex, and a light ray projected by a side surface of the third lens 300 facing away from the second lens 200 passes through a side surface of the third lens 300 facing away from the second lens 200 is parallel.

According to the reversibility of light, as shown in fig. 1 and 2, the third lens 300 can collect parallel light into a plurality of real focal points 400, the plurality of real focal points 400 are on a first focal line, light passing through the third lens 300 is kept parallel in a first direction X when viewed in the optical axis direction (i.e., when viewed in plan view), the second lens 200 is disposed on one side of the third lens 300, the second lens 200 can collect light passing through the third lens 300 into a plurality of second focal points, the plurality of second focal points are on a second focal line (i.e., the real focal points 400 of the lens group), and light passing through the second lens 200 is not parallel in the first direction when viewed in the optical axis direction.

That is, the third lens 300 focuses in only the up-down direction, the left-right direction light rays are kept parallel, that is, the first focuses are focused on one focal line, the second lens 200 focuses left-right, the focusing point is the real focus 400 of the lens group, the second focuses are focused on another focal line, the up-down light of the application is long in focal length relative to the left-right light (as shown in fig. 1, the distance from the real focus 400 to the side surface of the third lens 300, which is opposite to the second lens 200, i.e., the distance from the light source to the parallel light), so as to facilitate the up-down focusing of the high beam and the low beam, and the distance from the real focus 400 to the side surface of the second lens 200, which faces the third lens 300, is short in focal length relative to the up-down light (as shown in fig. 2, that is, the distance from the light source to the left-right parallel light), so as to widen the high beam and the low beam is flat and wide, and meets the requirement of the high beam and low beam. In addition, the present application employs two lenses (the second lens 200 and the third lens 300) to collectively accomplish focusing, and the overall thickness is smaller than that of the single focus focusing lens, and thus the weight is reduced, compared to the single focus focusing lens of the prior art.

Here, the inclined plane can mirror the curved total reflection lens 700 into a virtual image, and the converging point of the virtual image coincides with the real focal point 400 of the lens group, that is, in the case where there is no mirror image of the inclined plane, the converging point of the curved total reflection lens 700 coincides with the real focal point 400 of the lens group, and in the case where the mirror image is a virtual image, the converging point corresponds to the virtual image coinciding with the real focal point 400 of the lens group. Further, the brightness, color and uniformity of the high beam pattern projected from the optical lens are good.

In an embodiment of the present application, as shown in fig. 5, the first lens 100 further includes a second inclined plane 105, a third inclined plane 104, and a vertical plane 106, where the light incident surface 101, the first inclined plane 102, the third inclined plane 104, the second inclined plane 105, and the vertical plane 106 are sequentially connected, the light incident surface 101 extends in a vertical direction, the first inclined plane 102 extends toward the second lens 200 at a first angle relative to the light incident surface 101, the second inclined plane 105 extends toward the second lens 200 at a second angle relative to the light incident surface 101, the third inclined plane 104 extends toward the first inclined plane 102 at a third angle relative to the second inclined plane 105, the vertical plane 106 is parallel to the light incident surface 101, the second inclined plane 105 is parallel to the third inclined plane 104, and an edge of any curved total reflection lens 700 is connected to the second inclined plane 105, the third inclined plane 104, and the vertical plane 106.

As an example, any curved total reflection lens 700 includes two opposite sides 701 and two opposite curved sides 702, both sides 701 are connected to the second inclined plane 105, and both curved sides 702 are connected to the third inclined plane 104 and the vertical plane 106, respectively.

It is worth mentioning here that the first lens 100 and the second lens 200 may be integrally formed, here for the purpose of embodying a lens group (the second lens 200 and the third lens 300), whereby the integrally formed first lens 100 and second lens 200 are divided by a virtual plane 103, as shown in fig. 1 and 5, the virtual plane 103 not being truly present.

In addition, the conventional "condenser+single focus focusing lens" has the disadvantage that the beam formed by the module will present a circular condenser-like spot image on the surface of the headlight cover of the automobile, which is complained by many manufacturers.

The curved surface total reflection lens has the advantages of regular and complete structure and regular edge lines, so that the front light face mask has good light spot uniformity and good appearance, and customer satisfaction is improved.

In addition, as shown in fig. 3 to 5, the dimensions of the light incident surface 101 and the vertical plane 106 in the vertical direction are larger than the dimensions of the curved edge 702 connected with the vertical plane 106 in the vertical direction, that is, the light leakage turnup 600 formed by extending the bottoms of the light incident surface 101 and the vertical plane 106, and the light leakage turnup 600 is used for reducing the generation of stray light in cooperation with the second inclined plane 105, so that redundant stray light can be projected to the ground.

In addition, since the third lens 300 of the present application is a non-single focal lens, this modular solution can avoid the focusing of sunlight into clusters, greatly reducing the risk of sunlight burning the lamp parts.

In addition, the car light still includes a plurality of light emitting sources 500 and a plurality of circuit board, and a plurality of light emitting sources 500 and a plurality of circuit board one-to-one, a plurality of light emitting sources 500 and a plurality of real focus 400 one-to-one, and the long limit of arbitrary circuit board extends in vertical direction, and the circuit board is for vertically placing towards the optical axis direction promptly, and so overall arrangement module thermal cycle is good, is favorable to the heat dissipation, and simple to operate.

According to the optical lens of this application, optical lens includes first lens, lens group and curved surface total reflection lens, and wherein, lens group includes second lens and third lens, and second lens and first lens integrated into one piece, third lens set up in one side of second lens, and the real focus of lens group is located the second lens, and the first lens of this application is one side of being opposite to third lens including the income plain noodles and the first inclined plane that connect each other, curved surface total reflection lens set up in the below of first inclined plane, curved surface total reflection lens is the convex side of being opposite to first inclined plane, and the light that the outside light emitting source launched can be got into by the income plain noodles, through curved surface total reflection lens reflection, again through first inclined plane reflection, assemble to real focus, will be parallel light with the light projection of real focus by lens group, that the real focus of lens group is located curved surface total reflection lens's reflection light's collection point department. The light path of this application is folding, has shortened the length of module, and the final light type of optical lens (far-reaching headlamp) that this application provided is the formation of image of the light beam of lens group real focus department promptly, and then the luminance, the colour and the homogeneity of the far-reaching headlamp type of optical lens projection of this application are all good.

Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An optical lens is characterized by comprising a first lens (100), a lens group and a curved total reflection lens (700), wherein the lens group comprises a second lens (200) and a third lens, the second lens (200) and the first lens (100) are integrally formed, the third lens is arranged on one side of the second lens (200), a real focus (400) of the lens group is positioned in the second lens (200),

the side of the first lens (100) facing away from the third lens comprises a light incident surface (101) and a first inclined surface (102) which are connected with each other, the curved surface total reflection lens (700) is arranged below the first inclined surface (102), the side of the curved surface total reflection lens (700) facing away from the first inclined surface (102) is convex,

light emitted by an external light-emitting source can enter through the light-entering surface (101), is reflected by the curved surface total reflection lens (700), is reflected by the first inclined surface (102), is converged to the real focus (400), and then is projected into parallel light through the lens group.

2. The optical lens of claim 1, wherein the lens group comprises a plurality of real focal points (400) and a plurality of curved total reflection lenses (700),

the curved surface total reflection lenses (700) are arranged below the first inclined surface (102), the curved surface total reflection lenses (700) are in one-to-one correspondence with the real focuses (400),

light emitted by an external light-emitting source can enter through the light-entering surface (101), is reflected by the curved surface total reflection lens (700), is reflected by the first inclined surface (102), is converged to the corresponding real focus (400), and then is projected into parallel light through the lens group.

3. An optical lens according to claim 2, wherein the side of the second lens (200) facing the third lens (300) comprises a plurality of protrusions (201), the convex surface of any one of the protrusions (201) being convex along the optical axis, any one of the protrusions (201) together with the third lens (300) comprising a real focal point (400),

when viewed along the optical axis direction, the light rays diverged by the real focal point (400) pass through the corresponding convex parts (201) and then keep parallel in a first direction (X), and the optical axis direction is perpendicular to the first direction (X).

4. An optical lens according to claim 3, wherein a side of the third lens (300) facing the second lens (200) is concave along the optical axis,

light passing through one side surface of the third lens (300) facing the second lens (200) is kept parallel in a first direction (X) when viewed in the optical axis direction,

a side of the third lens (300) facing away from the second lens (200) is convex along the optical axis,

light rays projected from a side surface of the third lens (300) facing the second lens (200) and passing through a side surface of the third lens (300) facing away from the second lens (200) are parallel light.

5. An optical lens according to claim 1, characterized in that the inclined plane is capable of mirroring the curved total reflection lens (700) into a virtual image, the convergence point of which coincides with the real focal point (400) of the lens group.

6. An optical lens according to claim 3, wherein the first lens (100) further comprises a second inclined plane (105), a third inclined plane (104) and a vertical plane (106), the light entrance surface (101), the first inclined plane (102), the third inclined plane (104), the second inclined plane (105) and the vertical plane (106) are sequentially connected,

the light incident surface (101) extends in a vertical direction, the first inclined surface (102) extends towards the second lens (200) at a first angle relative to the light incident surface (101),

the second inclined surface (105) extends towards the second lens (200) at a second angle relative to the light incident surface (101), the third inclined surface (104) faces away from the first inclined surface (102) at a third angle relative to the second inclined surface (105), the vertical plane (106) is parallel to the light incident surface (101),

the edge of any curved total reflection lens (700) is connected to the second inclined plane (105), the third inclined plane (104) and the vertical plane (106).

7. The optical lens of claim 6, wherein any of the curved total reflection lenses (700) comprises two opposite sides (701) and two opposite curved sides (702), the two sides (701) being connected to the second inclined plane (105), the two curved sides (702) being connected to the third inclined plane (104) and to the vertical plane (106), respectively,

the second lens (200) further comprises two side surfaces, the two side surfaces are opposite to each other in the first direction, and a boundary line is formed at the joint of the edge of any convex surface and the corresponding side surface.

8. The optical lens according to claim 6, characterized in that the dimensions of the light entrance surface (101) and the vertical plane (106) in the vertical direction are each larger than the dimensions of a curved edge (702) connected to the vertical plane (106) in the vertical direction.

9. A vehicle lamp comprising an optical lens according to any one of claims 1-8.

10. The vehicle lamp according to claim 9, further comprising a plurality of light emitting sources (500) and a plurality of circuit boards, the plurality of light emitting sources (500) being in one-to-one correspondence with the plurality of real focal points (400), a long side of any one of the circuit boards extending in a vertical direction.