Corner light lens and design method thereof, corner light

Abstract

The application discloses an angle lamp lens and a design method thereof and an angle lamp, and relates to the technical field of automobile lighting. The method comprises the following steps: determining an arc line of a front surface of the angle lamp lens; determining a position of an angle lamp light source; testing light rays are incident on the arc line of the front surface of the angle lamp lens through the angle lamp light source, and an included angle between the testing light rays and a normal line at a center point of the arc line of the front surface of the angle lamp lens is greater than 30 degrees; determining an arc line of a rear surface of the angle lamp lens according to the arc line of the front surface of the angle lamp lens and the angle lamp light source; stretching the arc line of the front surface of the angle lamp lens and the arc line of the rear surface of the angle lamp lens in the same direction to form the front surface of the angle lamp lens and the rear surface of the angle lamp lens respectively, and a central axis of the front surface of the angle lamp lens is parallel to a front-rear direction of a vehicle; and obtaining design parameters of the angle lamp lens according to the front surface of the angle lamp lens and the rear surface of the angle lamp lens. The angle lamp lens designed by the method can not only consider the function of the angle lamp, but also avoid the need of deflecting the front surface of the angle lamp during installation.

Description

Technical Field

[0001] This invention relates to the field of automotive lighting technology, and more specifically, to a corner lamp lens and its design method, and a corner lamp. Background Technology

[0002] To enhance driving safety, an increasing number of automakers are requiring vehicles to incorporate cornering lights. Cornering lights provide auxiliary illumination near road corners or to the sides and rear of the vehicle. They also offer supplementary lighting in low-light conditions, thus contributing to safer driving.

[0003] GB / T 30511-2014 requires diagonal lights to have a geometrical visible angle of 0° upward diffusion, 10° downward diffusion, and 30°–60° outward diffusion. Therefore, to meet these regulatory requirements, current diagonal light lenses are typically designed with an outward deflection angle. However, this outward deflection can appear visually uncoordinated, affecting the aesthetics of the design. Consequently, existing diagonal light lenses struggle to meet both the aesthetic and power supply requirements of users. Therefore, developing a new diagonal light lens design that ensures the lens remains unchanged during installation while still meeting the functional requirements of the national standard for diagonal lights and maximizing aesthetic appeal is a pressing industry challenge. Summary of the Invention

[0004] The purpose of this invention is to provide a corner lamp lens and its design method, as well as a corner lamp, which can take into account the functions of a corner lamp while avoiding the problem of the front surface of the corner lamp needing to be deflected during installation.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In one aspect, the present invention provides a design method for a cornering light lens, the method comprising: determining the arc of the front surface of the cornering light lens, and making the normal at the center point of the arc of the front surface of the cornering light lens parallel to the longitudinal direction of the vehicle; determining the position of the cornering light source based on the length of the cornering light along a first direction and the position of the arc of the front surface of the cornering light lens, wherein the first direction is the arrangement direction of the cornering light lens and the cornering light source; and incident test light onto the arc of the front surface of the cornering light lens through a test light source, wherein the angle between the test light and the normal at the center point of the arc of the front surface of the cornering light lens is greater than 30°; and so on. The rear surface arc of the cornering light lens is determined based on the front surface arc and the cornering light source. Test light is refracted through the front surface arc into the lens and then refracted again by the rear surface arc before converging at the light source. Both the front and rear surface arcs are stretched in the same direction to form the front and rear surfaces of the cornering light lens, respectively. The central axis of the front surface is parallel to the vehicle's longitudinal direction. The design parameters of the cornering light lens are obtained based on these surfaces. This design method produces a cornering light lens that, while maintaining cornering light functionality, avoids the need for offset installation of the front surface during installation.

[0007] Optionally, the front surface arc and the rear surface arc of the cornering lamp lens are stretched in the same direction to form the front surface and rear surface of the cornering lamp lens, respectively. After the central axis of the front surface of the cornering lamp lens is parallel to the longitudinal direction of the vehicle, the method further includes: establishing a three-dimensional coordinate system with the central axis of the front surface of the cornering lamp lens as the Z-axis and the stretching direction of the front surface arc of the cornering lamp lens as the Y-axis; adjusting the curvature of the front surface arc of the cornering lamp lens according to the light pattern formed by the light emitted from the cornering lamp light source after refraction through the cornering lamp lens.

[0008] Optionally, the front surface arc and the rear surface arc of the corner lamp lens are stretched in the same direction to form the front surface and rear surface of the corner lamp lens, respectively. Before the central axis of the front surface of the corner lamp lens is parallel to the longitudinal direction of the vehicle, the design method of the corner lamp lens further includes: adjusting the position of the rear surface of the corner lamp lens according to the luminous flux of the light emitted from the corner lamp light source incident on the rear surface of the corner lamp lens, until light with a luminous flux equal to or greater than a preset luminous flux is incident on the rear surface of the corner lamp lens.

[0009] Optionally, the distance from the corner lamp light source to the arc of the front surface of the corner lamp lens is less than the length of the corner lamp along the first direction.

[0010] In another aspect, the present invention provides a corner lamp lens, which is an integrally molded part made of transparent material according to the design parameters of the front and rear surfaces of the corner lamp lens obtained by the above-described corner lamp lens design method.

[0011] In another aspect, the present invention provides a corner lamp, which includes a corner lamp light source and the aforementioned corner lamp lens, wherein the corner lamp lens is disposed on the light-emitting side of the corner lamp light source.

[0012] Optionally, the corner light also includes a lens holder, on which the corner light lens is mounted.

[0013] Optionally, the corner lamp light source can be either an LED or a cold cathode fluorescent lamp.

[0014] Optionally, the corner light also includes a housing made of transparent material, with the corner light lens and the corner light source respectively fixed inside the housing.

[0015] Optionally, the corner light also includes a heat dissipation device, which is fixed inside the housing and is used to dissipate heat from the corner light source and the corner light lens.

[0016] The beneficial effects of this invention include:

[0017] The design method for a corner lamp lens provided in this application includes: determining the front surface arc of the corner lamp lens, and making the normal at the center point of the front surface arc of the corner lamp lens parallel to the Z direction; determining the position of the corner lamp light source based on the length of the corner lamp along a first direction and the position of the front surface arc of the corner lamp lens, wherein the first direction is the arrangement direction of the corner lamp lens and the corner lamp light source; incident test light onto the front surface arc of the corner lamp lens through a test light source, wherein the angle between the test light and the normal at the center point of the front surface arc of the corner lamp lens is greater than 30°; and determining the position of the corner lamp light source based on the length of the corner lamp along a first direction and the position of the front surface arc of the corner lamp lens. The light source determines the rear surface arc of the cornering lamp lens. The test light is refracted through the front surface arc of the cornering lamp lens into the interior of the lens, and then refracted again by the rear surface arc before converging at the cornering lamp light source. The front and rear surface arcs of the cornering lamp lens are stretched in the same direction to form the front and rear surfaces of the cornering lamp lens, respectively. The central axis of the front surface of the cornering lamp lens is parallel to the vehicle's longitudinal direction (Z-axis). The design parameters of the cornering lamp lens are obtained based on the front and rear surfaces of the cornering lamp lens. In this design, the front surface arc of the cornering light lens is initially selected. Then, based on the size of the cornering light and the front surface arc of the cornering light lens, the rear surface arc of the cornering light lens is initially determined. Next, by incidenting reverse test light onto the front and rear surface arcs of the cornering light lens, the rear surface arc of the cornering light lens is determined based on ensuring that the refracted test light converges at the cornering light source (the rear surface arc of the cornering light lens is gradually adjusted according to the test light emitted from the rear surface arc until the test light converges at the cornering light source). Then, the adjusted rear and front surface arcs of the cornering light lens are stretched to obtain the rear and front surfaces of the cornering light lens, ensuring that the front surface of the cornering light lens faces forward after stretching. In this way, this application obtains all the design parameters for the rear and front surfaces of the cornering light lens. This application designs the front and rear surfaces of the corner lamp lens using the reverse engineering method described above. On the one hand, it can meet the relevant regulatory requirements that the illumination range of the corner lamp be deflected outward by 30° to 60°, thereby enabling it to achieve the function of a corner lamp. On the other hand, the front surface of the corner lamp lens designed in this application can also avoid the problem of the front surface of the corner lamp lens needing to be deflected during installation. Thus, compared with the prior art, this application can improve the aesthetic appearance of the corner lamp during installation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the flowcharts illustrating a design method for a corner lamp lens provided in some embodiments of the present invention;

[0020] Figure 2 This is a second flowchart illustrating the design method of a corner lamp lens provided in some embodiments of the present invention.

[0021] Figure 3 This is one of the schematic diagrams illustrating the design process of a corner lamp lens provided in some embodiments of the present invention;

[0022] Figure 4 This is the second schematic diagram illustrating the design process of a corner lamp lens provided in some embodiments of the present invention;

[0023] Figure 5 The light pattern diagram of the corner lamp provided for some embodiments of the present invention.

[0024] Icons: 10 - Corner light lens; 11 - Front surface; 111 - Front surface curve; 12 - Rear surface; 121 - Rear surface curve; A - First light segment; B - Second light segment; C - Third light segment; 20 - Corner light source; 30 - Lens bracket. Detailed Implementation

[0025] The embodiments described below represent the information necessary for those skilled in the art to practice the embodiments and illustrate the best mode for practicing the embodiments. After reading the following description with reference to the accompanying drawings, those skilled in the art will understand the concepts of the invention and will recognize the application of these concepts not specifically set forth herein. It should be understood that these concepts and applications fall within the scope of the invention and the appended claims.

[0026] It should be understood that while the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of the invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] It should be understood that when an element (such as a layer, region, or substrate) is referred to as "on another element" or "extending to another element," it may be directly on or directly extended to the other element, or there may be an intermediate element. Conversely, when an element is referred to as "directly on another element" or "directly extending to another element," there is no intermediate element. Similarly, it should be understood that when an element (such as a layer, region, or substrate) is referred to as "above another element" or "extending above another element," it may be directly on or directly extended to the other element, or there may be an intermediate element. Conversely, when an element is referred to as "directly on another element" or "extending directly to another element," there is no intermediate element. It should also be understood that when an element is referred to as "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. Conversely, when an element is referred to as "directly connected" or "directly coupled" to another element, there is no intermediate element.

[0028] Related terms such as “below”, “above”, “upper”, “lower”, “horizontal”, or “vertical” are used herein to describe the relationship of one element, layer, or region to another, as illustrated in the figures. It should be understood that these terms, and those discussed above, are intended to cover different orientations of the device other than those depicted in the figures.

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that, when used herein, the term “comprising” indicates the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups of the foregoing.

[0030] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that the terms used herein should be interpreted as having the same meaning as they would in the context of this specification and related fields, and not in an idealized or overly formal sense, unless expressly defined herein.

[0031] In the following text, Z refers to the vehicle's front-to-back direction, Y to the vehicle's left-to-right direction, and X to the vehicle's up-and-down direction.

[0032] Please refer to Figures 1-4This embodiment provides a design method for a corner lamp lens 10, which includes the following steps:

[0033] S100. Determine the arc 111 of the front surface of the cornering lamp lens 10, and make the normal at the center point of the arc 111 of the front surface of the cornering lamp lens 10 parallel to the longitudinal direction (Z direction) of the vehicle.

[0034] The determination of the front surface 11 of the aforementioned corner lamp lens 10 can be obtained directly by those skilled in the art based on experience and the existing surface shape of the front surface 11 of the corner lamp lens 10.

[0035] For example, the front surface arc 111 of the cornering lamp lens 10 can be selected from the front surface of an existing cornering lamp lens, but in this embodiment, the front surface 11 of the cornering lamp lens 10 needs to face the vehicle's front-rear direction, i.e., the Z direction.

[0036] S200. The position of the corner lamp light source 20 is determined according to the length of the corner lamp along the first direction and the position of the arc 111 on the front surface of the corner lamp lens 10. The first direction is the arrangement direction of the corner lamp lens 10 and the corner lamp light source 20. The position of the corner lamp light source 20 is the focal position of the corner lamp lens 10.

[0037] This application determines the position of the corner lamp light source 20 based on the size of the corner lamp and the position of the arc 111 on the front surface of the corner lamp lens 10. The size of the corner lamp lens 10 refers to its external dimensions, specifically its length along a first direction, where the first direction is the arrangement direction of the corner lamp lens 10 and the corner lamp light source 20. During the design process, it is important to note that the distance between the corner lamp light source 20 and the arc 111 on the front surface of the corner lamp lens 10 should be less than the length of the corner lamp along the first direction. This ensures that the designed corner lamp lens 10 is dimensionally correct and avoids the corner lamp lens 10 being too large for easy installation.

[0038] The corner lamp light source 20 is used to emit light when corner lamp illumination is used. Since the corner lamp light source 20 is well known to those skilled in the art, it will not be described in detail in this application.

[0039] S300, Test light is incident on the front surface 11 of the corner lamp lens 10 through the test light source, and the angle between the test light and the normal at the center point of the arc 111 on the front surface of the corner lamp lens 10 is greater than 30°.

[0040] In short, this application, based on the regulatory requirements for corner lights, stipulates that the light emitted by a corner light must cover an area of ​​30° to 60° outside the direction of illumination of the corner light. In reverse design, multiple light rays with an angle of 30° to 60° between the angle between the angle and the normal at the center point of the arc 111 on the front surface of the corner light lens 10 and the normal are introduced from outside the corner light lens 10 (i.e., the side of the arc 111 on the front surface of the corner light lens 10 away from the arc 121 on the rear surface of the corner light lens 10).

[0041] The test light source is a reverse light source used in the design of the corner lamp lens 10. This application adopts this reverse thinking approach to design the rear surface 12 of the corner lamp lens 10 so that the light emitted by the corner lamp light source 20 is refracted after passing through the rear surface 12 and the front surface 11 of the corner lamp lens 10, thereby meeting the relevant regulatory requirements (i.e., deflected outward by 30° to 60°). In this way, it is not necessary to deflect the corner lamp lens 10 outward when installing the corner lamp, and the appearance of the corner lamp is more aesthetically pleasing when viewed from the front of the vehicle.

[0042] In order to make the relevant parameters of the designed corner lamp lens 10 more accurate, the test light source can optionally be the same as the corner lamp light source 20.

[0043] This application sets the angle between the test light and the normal at the center point of the arc 111 on the front surface of the corner lamp lens 10 to be greater than 30°. In this way, the backlight, i.e. the light emitted from the corner lamp light source 20, can meet the regulatory requirements for corner lamps (i.e., deflected outward by 30° to 60°).

[0044] S400. Determine the rear surface arc 121 of the corner lamp lens 10 based on the front surface arc 111 and the corner lamp light source 20. The test light is refracted through the front surface arc 111 into the corner lamp lens 10 and then converges at the corner lamp light source 20 after being refracted by the rear surface arc 121.

[0045] That is, after initially determining the front surface arc 111 of the corner lamp lens 10 and the corner lamp light source 20, reverse light is incident (i.e., the front surface arc 111 of the corner lamp lens 10 is incident with a test light source), and then the rear surface arc 121 of the corner lamp lens 10 is determined by reverse deduction (it is possible to select a preliminary rear surface arc 121 of the corner lamp lens 10, and then, under the incident test light, continuously adjust the rear surface arc 121 of the corner lamp lens 10 (for example, the adjustment method can be to adjust the position and / or curvature of the rear surface 12 of the corner lamp lens 10, etc.) until the test light can converge at the corner lamp light source 20 after being refracted and emitted through the rear surface arc 121 of the corner lamp lens 10).

[0046] by Figure 3Taking one of the test beams shown as an example, the light incident on the front surface arc 111 of the corner lamp lens 10 is the first beam A; the light refracted between the front surface arc 111 and the rear surface arc 121 of the corner lamp lens 10 is the second beam B; and the light emitted after refraction through the rear surface arc 121 of the corner lamp lens 10 is the third beam C. In this application, it is required that the first beam A is refracted through the front surface arc 111 of the corner lamp lens 10 to become the second beam B, the second beam B is refracted through the rear surface arc 121 of the corner lamp lens 10 to become the third beam C, and the third beam C is able to converge to the corner lamp light source 20, that is, the test beam converges at the focal point of the corner lamp lens 10. In this way, the paths of the three light rays can be consistent with the path of the light emitted from the corner lamp light source 20 when the corner lamp lens 10 is working normally. Thus, the corner lamp lens 10 designed using reverse thinking can certainly meet the regulatory requirement of outward deflection of 30° to 60°.

[0047] S500, the front surface arc 111 and the rear surface arc 121 of the cornering lamp lens 10 are stretched in the same direction to form the front surface 11 and the rear surface 12 of the cornering lamp lens 10, respectively. The central axis of the front surface 11 of the cornering lamp lens 10 is parallel to the front-rear direction (Z direction) of the vehicle.

[0048] That is, the front surface arc 111 of the corner lamp lens 10 is stretched to obtain the front surface 11, and the rear surface arc 121 of the corner lamp lens 10 is stretched to obtain the rear surface 12. In this embodiment, the stretching direction of the front surface arc 111 and the rear surface arc 121 is the Y direction as described below.

[0049] It should be noted that after stretching, the aforementioned front surface arc 111 and rear surface arc 121 should satisfy the condition that the light-emitting side of the corner lamp light source 20 and the rear surface 12 of the corner lamp lens 10 are opposite to each other, so that the light emitted from the corner lamp light source 20 can be incident on the incident surface of the rear surface 12 of the corner lamp lens 10.

[0050] This application stretches the front surface arc 111 and the rear surface arc 121 in the same direction, and after stretching, the central axis of the front surface is parallel to the front-rear direction (Z direction) of the vehicle. In this way, the cornering lamp lens 10 can meet the regulatory requirements, and the front surface 11 of the cornering lamp lens 10 is always facing the front of the vehicle during installation. That is, it is not necessary to deflect the front surface 11 of the cornering lamp lens 10 during installation.

[0051] S600. The design parameters of the corner lamp lens 10 are obtained based on the front surface 11 and the rear surface 12 of the corner lamp lens 10.

[0052] The design parameters of the cornering light lens 10 include, but are not limited to, the surface shape of the front surface 11, the surface shape of the rear surface 12, the curvature of the front surface 11, and the curvature of the rear surface 12. Since the relevant parameters can be determined simultaneously once the front surface 11 and the rear surface 12 of the cornering light lens 10 are determined, and these design parameters are well known to those skilled in the art, they will not be described further in this application.

[0053] In summary, the design method for the corner lamp lens 10 provided in this application includes: determining the front surface arc 111 of the corner lamp lens 10, and making the normal at the center point of the front surface arc 111 of the corner lamp lens 10 parallel to the Z direction; determining the position of the corner lamp light source 20 based on the length of the corner lamp along a first direction and the position of the front surface arc 111 of the corner lamp lens 10, wherein the first direction is the arrangement direction of the corner lamp lens 10 and the corner lamp light source 20; incident test light onto the front surface arc 111 of the corner lamp lens 10 through a test light source, wherein the angle between the test light and the normal at the center point of the front surface arc 111 of the corner lamp lens 10 is greater than 30°; and determining the position of the corner lamp light source 20 based on the length of the corner lamp along a first direction and the position of the front surface arc 111 of the corner lamp lens 10. The rear surface arc 121 of the cornering lamp lens 10 is determined, wherein the test light is refracted into the interior of the cornering lamp lens 10 through the front surface arc 111, and converges at the cornering lamp light source 20 after being refracted by the rear surface arc 121; the front surface arc 111 and the rear surface arc 121 of the cornering lamp lens 10 are stretched in the same direction to form the front surface 11 and the rear surface 12 of the cornering lamp lens 10, respectively, and the central axis of the front surface 11 of the cornering lamp lens 10 is parallel to the longitudinal direction (Z direction) of the vehicle; the design parameters of the cornering lamp lens 10 are obtained based on the front surface 11 and the rear surface 12 of the cornering lamp lens 10. In the design process of this application, the front surface arc 111 of the cornering lamp lens 10 is initially selected. Then, based on the size of the cornering lamp and the front surface arc 111 of the cornering lamp lens 10, the rear surface arc 121 of the cornering lamp lens 10 is initially determined. Then, by incidenting reverse test light onto the front surface arc 111 and the rear surface arc 121 of the cornering lamp lens 10, the rear surface arc 121 of the cornering lamp lens 10 is determined based on the fact that the refracted test light can converge at the cornering lamp light source 20 (the rear surface arc 121 of the cornering lamp lens 10 is gradually adjusted according to the test light situation after it is emitted from the rear surface arc 121 of the cornering lamp lens 10 until the test light can converge at the cornering lamp light source 20). Then, the adjusted rear surface arc 121 and front surface arc 111 of the cornering lamp lens 10 are stretched to obtain the rear surface 12 and the front surface 11 of the cornering lamp lens 10, so that the front surface 11 of the cornering lamp lens 10 can face the front of the vehicle. In this way, this application can obtain all the design parameters of the rear surface 12 and the front surface 11 of the corner lamp lens 10. This application designs the front surface 11 and the rear surface 12 of the corner lamp lens 10 using the above reverse deduction method. On the one hand, it can meet the relevant regulatory requirements for the outward deflection of the corner lamp's illumination range by 30° to 60°, thereby enabling it to realize the corner lamp function. On the other hand, the front surface 11 of the corner lamp lens 10 designed in this application can also avoid the problem of the front surface 11 of the corner lamp lens 10 needing to be deflected during installation. Thus, compared with the prior art, this application can improve the aesthetic appearance of the corner lamp during installation.

[0054] Please refer to the reference again. Figure 2 Optionally, in step S500 above, the front surface arc 111 and the rear surface arc 121 of the cornering lamp lens 10 are stretched in the same direction to form the front surface 11 and the rear surface 12 of the cornering lamp lens 10, respectively. After the central axis of the front surface of the cornering lamp lens 10 is parallel to the longitudinal direction of the vehicle, the design method provided in this application further includes the following steps:

[0055] S020. A three-dimensional coordinate system is established with the central axis of the front surface 11 of the corner lamp lens 10 as the Z-axis and the stretching direction of the arc 111 of the front surface of the corner lamp lens 10 as the Y-axis, as follows: Figure 4 As shown. It should be understood that the X-axis should be perpendicular to both the Z-axis and the Y-axis.

[0056] S030. Adjust the curvature of the arc 111 on the front surface of the corner lamp lens 10 according to the light pattern formed by the light emitted from the corner lamp light source 20 after being refracted by the corner lamp lens 10.

[0057] That is, after initially establishing the front surface 11 and rear surface 12 of the corner lamp lens 10 in the preceding text, this application emits light through the corner lamp light source 20, and then illuminates the corner lamp lens 10 designed in the preceding text. By observing the light pattern obtained by the corner lamp lens 10 designed in the preceding text, the curvature of the arc 111 of the front surface of the corner lamp lens 10 is further adjusted.

[0058] The basis for adjusting the curvature of the arc 111 on the front surface of the corner lamp lens 10 is the uniformity of the light pattern. That is, by observing the light pattern of the corner lamp lens 10, the curvature of the arc 111 on the front surface of the corner lamp lens 10 is gradually adjusted until the uniformity of the light pattern meets the preset requirements. These preset requirements can be determined by those skilled in the art. For example, they can be determined by confirming the distance between two adjacent apertures in the light pattern (if the distance between two adjacent apertures is basically the same, it indicates that the light pattern is uniform, and the corner lamp lens 10 designed in this application can achieve uniform light diffusion).

[0059] Please refer to Figure 5 , Figure 5 The image shows the light pattern of a corner lamp lens 10 fabricated using the design parameters obtained through the design method of this application. It can be seen that the corner lamp lens 10 obtained using the design method of this application exhibits a uniform progression between adjacent light rings in its light pattern. Furthermore, Figure 5 The horizontal and vertical axes in the graph represent angle values. It can be seen that the outward diffusion angle of the light pattern covers 30° to 60°, and the downward diffusion angle is greater than 10°, which clearly meets the regulatory requirements.

[0060] Please continue to refer to Figure 2Optionally, before step S500 above, where the front surface arc 111 and the rear surface arc 121 of the cornering lamp lens 10 are stretched in the same direction to form the front surface 11 and the rear surface 12 of the cornering lamp lens 10 respectively, and before the central axis of the front surface of the cornering lamp lens 10 is parallel to the longitudinal direction of the vehicle, the design method of the cornering lamp lens 10 provided in this application further includes the following steps:

[0061] S010. Adjust the position of the rear surface 12 of the corner lamp lens 10 according to the luminous flux of the light emitted from the corner lamp light source 20 incident on the rear surface 12 of the corner lamp lens 10, until the light with a luminous flux equal to or greater than the preset luminous flux is incident on the rear surface 12 of the corner lamp lens 10.

[0062] The preset luminous flux can be determined by those skilled in the art, as long as the preset luminous flux is high enough to allow more light to be incident on the rear surface 12 of the corner lamp lens 10.

[0063] This application adjusts the position of the rear surface 12 of the corner lamp lens 10 according to the luminous flux incident on the rear surface 12 of the corner lamp lens 10, so that most of the light can be incident on the rear surface 12 of the corner lamp lens 10, thereby improving the light utilization rate of the corner lamp light source 20 and avoiding resource waste.

[0064] In this embodiment, optionally, the distance from the corner lamp light source 20 to the arc 111 of the front surface of the corner lamp lens 10 is less than the size of the corner lamp. Here, the size of the corner lamp is the length of the corner lamp along a first direction, which is the arrangement direction of the corner lamp lens 10 and the corner lamp light source 20.

[0065] This ensures that the size of the corner lamp lens 10 is smaller than the total size of the corner lamp, so as to avoid the corner lamp lens 10 being unable to be installed into the corner lamp housing.

[0066] In another aspect, the present invention provides a corner lamp lens 10, which is an integrally molded part made of transparent material and obtained according to the design parameters of the front surface 11 and rear surface 12 of the corner lamp lens 10 obtained by the design method of the corner lamp lens 10 described above.

[0067] The specific material used for the corner lamp lens 10 can be selected by those skilled in the art, and this application does not impose any restrictions. Since the design method for the corner lamp lens 10 has been described in detail above, it will not be repeated here.

[0068] In another aspect, the present invention provides a corner lamp, which includes a corner lamp light source 20 and the aforementioned corner lamp lens 10, wherein the corner lamp lens 10 is disposed on the light-emitting side of the corner lamp light source 20.

[0069] Optionally, the aforementioned corner lamp light source 20 can be either an LED or a cold cathode fluorescent lamp. Specifically, those skilled in the art can choose according to their needs.

[0070] To facilitate the installation and fixation of the corner lamp lens 10, the corner lamp provided in this application may optionally include a lens bracket 30, on which the corner lamp lens 10 is mounted. This application does not limit the method by which the corner lamp lens 10 is fixed on the lens bracket 30.

[0071] Optionally, the cornering light also includes a housing made of transparent material, within which the cornering light lens 10 and the cornering light source 20 are respectively fixed. This allows the cornering light lens 10 and the cornering light source 20 to be integrated together through the housing, facilitating the overall installation of the cornering light on the vehicle.

[0072] To prevent the corner lamp from overheating after prolonged use and thus affecting its lifespan, the corner lamp provided in this application may optionally include a heat dissipation device, which is fixed inside the housing and is used to dissipate heat from the corner lamp light source 20 and the corner lamp lens 10.

[0073] The specific structure of the heat dissipation device can be determined by those skilled in the art, and this application does not impose any restrictions, as long as it can achieve the purpose of heat dissipation. For example, the heat dissipation device can use air cooling or liquid cooling.

[0074] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0075] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A design method for a corner lamp lens, characterized in that, include: S100. Determine the arc of the front surface of the cornering lamp lens, and make the normal at the center point of the arc of the front surface of the cornering lamp lens parallel to the front-rear direction of the vehicle. S200. Determine the position of the corner light source based on the length of the corner light along the first direction and the position of the arc of the front surface of the corner light lens, wherein the first direction is the arrangement direction of the corner light lens and the corner light source; S300. Test light is incident on the arc of the front surface of the corner lamp lens through a test light source, and the angle between the test light and the normal at the center point of the arc of the front surface of the corner lamp lens is greater than 30°. S400. Determine the rear surface arc of the corner lamp lens based on the front surface arc of the corner lamp lens and the corner lamp light source, wherein the test light is refracted into the interior of the corner lamp lens through the front surface arc of the corner lamp lens, and converges at the corner lamp light source after being refracted by the rear surface arc of the corner lamp lens. S500, The front surface arc and the rear surface arc of the corner lamp lens are stretched in the same direction to form the front surface and the rear surface of the corner lamp lens, respectively. The central axis of the front surface of the corner lamp lens is parallel to the front-rear direction of the vehicle. S600. The design parameters of the corner lamp lens are obtained based on the front surface and the rear surface of the corner lamp lens. Before stretching the front surface arc and the rear surface arc of the cornering lamp lens in the same direction to form the front surface and the rear surface of the cornering lamp lens, respectively, and before the central axis of the front surface of the cornering lamp lens is parallel to the longitudinal direction of the vehicle, the design method of the cornering lamp lens further includes: S010. Adjust the position of the rear surface of the corner lamp lens according to the luminous flux of the light emitted from the corner lamp light source incident on the rear surface of the corner lamp lens, until light with a luminous flux equal to or greater than the preset luminous flux is incident on the rear surface of the corner lamp lens. The distance from the corner lamp light source to the arc of the front surface of the corner lamp lens is less than the length of the corner lamp along the first direction.

2. The design method for a corner lamp lens according to claim 1, characterized in that, After stretching the front surface arc and the rear surface arc of the cornering lamp lens in the same direction to form the front surface and the rear surface of the cornering lamp lens, respectively, and the central axis of the front surface of the cornering lamp lens is parallel to the longitudinal direction of the vehicle, the method further includes: S020. A three-dimensional coordinate system is established with the central axis of the front surface of the corner lamp lens as the Z-axis and the stretching direction of the arc of the front surface of the corner lamp lens as the Y-axis. S030. Adjust the curvature of the front surface arc of the corner lamp lens according to the light pattern formed by the light emitted from the corner lamp light source after being refracted by the corner lamp lens.

3. A corner lamp lens, characterized in that, An integrally molded part is obtained by using transparent material and the design parameters of the front and rear surfaces of the corner lamp lens according to the design method of the corner lamp lens according to any one of claims 1 or 2.

4. A corner light, characterized in that, It includes a corner lamp light source and the corner lamp lens as described in claim 3, wherein the corner lamp lens is disposed on the light-emitting side of the corner lamp light source.

5. The corner light according to claim 4, characterized in that, The corner lamp also includes a lens bracket, and the corner lamp lens is mounted on the lens bracket.

6. The corner light according to claim 4, characterized in that, The corner lamp light source is either an LED or a cold cathode fluorescent lamp.

7. The corner light according to claim 4, characterized in that, The corner lamp also includes a housing, which is made of transparent material, and the corner lamp lens and the corner lamp light source are respectively fixed inside the housing.

8. The corner light according to claim 7, characterized in that, The corner lamp also includes a heat dissipation device, which is fixed inside the housing and is used to dissipate heat from the corner lamp light source and the corner lamp lens.

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