Light source inner lens, light source assembly and vehicle lamp
By designing a light integration and reflection structure within the lens of the light source, the problem of low light efficiency in LED concentrators was solved, resulting in higher light efficiency, reduced costs, and improved product marketability.
Patent Information
- Application Number
- CN202520491514.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In existing technologies, the width of the LED concentrator structure is greater than the width of the shaped surface, resulting in low light efficiency and requiring more LEDs to be arranged, thus increasing costs.
Design a light source internal lens comprising a light integration section and a light reflection section, employing a primary reflective surface and a secondary reflective surface, splitting the light through the light reflection section, increasing the light emission length of the light-emitting surface along the x-axis direction, and reducing the number of LEDs used.
Improve light efficiency, reduce costs, and enhance product marketability.
Smart Images
Figure CN223895765U_ABST
Abstract
Description
Technical Field
[0001] This utility model is applicable to the field of automotive lighting, and in particular relates to an inner lens of a light source, a light source assembly, and an automotive lamp. Background Technology
[0002] Since the invention of the automobile, headlights have been an essential component for vehicle safety. In recent years, in addition to basic safety and regulatory requirements, the effectiveness of their illumination has received increasing attention.
[0003] With the widespread use of LED technology, automotive lighting design is no longer limited to complying with national laws and regulations; it also needs to achieve better marketability at the lowest cost. Current automotive lighting technology, in order to achieve better appearance and marketability, has adopted a mainstream design with very narrow and elongated light-emitting surfaces. However, the width of the LED concentrator structure is greater than the width of the shaped surface, resulting in low light efficiency of the concentrator. This necessitates the placement of more LEDs, leading to higher costs.
[0004] In summary, the problems existing in the relevant technologies urgently need to be solved. Utility Model Content
[0005] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an inner lens of a light source, a light source assembly, and a vehicle lamp.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] In a first aspect, a light source internal lens includes a light integrating portion and a light reflecting portion. The light integrating portion extends and protrudes from the light reflecting portion along the z-axis direction, and has a light-entry groove at the protruding end. The light integrating portion has a reflective outer wall surface. The light integrating portion is used to guide light rays incident from the light-entry groove into the light reflecting portion along a first direction. The light reflecting portion has a reflective surface and a light-exiting surface. The reflective surface includes a primary reflective surface and a secondary reflective surface. The primary reflective surface and the secondary reflective surface are offset along the x-axis direction. The primary reflective surface includes a first primary reflective surface and a second primary reflective surface. The first primary reflective surface is used to guide light rays incident from the light integrating portion along the y-axis direction to the light-exiting surface. The second primary reflective surface is used to guide light rays incident from the light integrating portion along the x-axis direction to the secondary reflective surface, and the secondary reflective surface further guides the light rays along the y-axis direction to the light-exiting surface.
[0008] In conjunction with the first aspect, in some implementations of the first aspect, the first-level reflective surface includes an inclined surface tilted about the x-axis.
[0009] In combination with the first aspect and the above implementation methods, in some implementation methods of the first aspect, the secondary reflective surface includes an inclined surface tilted about the z-axis, and the second primary reflective surface includes an inclined surface tilted about the y-axis.
[0010] In combination with the first aspect and the above implementation methods, in some implementation methods of the first aspect, the secondary reflective surface includes a first secondary reflective surface and a second secondary reflective surface that are mirror-image arranged along the x-axis direction. The second primary reflective surface includes a second primary reflective surface A for guiding the light rays incident on the light integration part along the +x-axis direction to the first secondary reflective surface and a second primary reflective surface B for guiding the light rays incident on the light integration part along the -x-axis direction to the second secondary reflective surface.
[0011] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the primary reflective surface and the secondary reflective surface are total reflective surfaces.
[0012] In combination with the first aspect and the above implementation methods, in some implementation methods of the first aspect, the primary reflective surface forms a total reflective surface by setting concave or convex textures, and the secondary reflective surface forms a total reflective surface by setting concave or convex textures.
[0013] In combination with the first aspect and the above-mentioned implementation methods, in some implementation methods of the first aspect, the light-emitting surface is provided with concave or convex light-expanding textures.
[0014] In a second aspect, a light source assembly includes a light source and an inner lens of the light source as described in any implementation of the first aspect, wherein the light source is disposed facing the light-incident groove.
[0015] In conjunction with the second aspect, in some implementations of the second aspect, the light reflecting portion of the light source assembly extends along the x-axis direction, and the light source assembly is provided with a plurality of light integrating portions and light sources distributed along the x-direction.
[0016] Thirdly, a vehicle lamp comprising a light source assembly as described in any implementation of the second aspect.
[0017] One of the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of this utility model, the light reflecting part of the inner lens of the light source has a first-level reflecting surface and a second-level reflecting surface, thereby splitting the light introduced by the light integration part. Part of the light is guided to the light-emitting surface through the first-level reflecting surface, and part of the light is guided to the second-level reflecting surface along the x-axis direction through the second-level reflecting surface, and then guided to the light-emitting surface by the second-level reflecting surface. This increases the light-emitting length along the x-axis direction on the light-emitting surface, realizing the effect of a single light integration part having the light-emitting length of multiple light integration parts. For the very slender light-emitting surface with a design, it can improve the light efficiency utilization rate, reduce the number of LEDs used, reduce costs, and improve the marketability of the product.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is an isometric view of one embodiment of the light source assembly of this utility model;
[0021] Figure 2 This is a top view of one embodiment of the light source assembly of this utility model;
[0022] Figure 3 yes Figure 2 Cross-sectional view at point AA;
[0023] Figure 4 yes Figure 2 Cross-sectional view at point BB;
[0024] Figure 5 This is a side view of one embodiment of the light source assembly of this utility model;
[0025] Figure 6 yes Figure 5 Cross-sectional view at point C;
[0026] Figure 7 This is a schematic diagram of another embodiment of the light source assembly of this utility model. Detailed Implementation
[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0028] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.
[0029] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.
[0030] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.
[0031] in, Figures 1-6 The reference direction coordinate system of the present invention is given, and the embodiments of the present invention will be described below.
[0032] See Figures 1-6This utility model provides an inner lens 100 for a light source. The inner lens 100 is made of a light-transmitting material and includes a light-integrating part 101 and a light-reflecting part 102. The light-integrating part 101 and the light-reflecting part 102 can be connected as a whole by two separate components, or they can be divided into two parts by a virtual surface. The light-integrating part 101 extends and protrudes from the light-reflecting part 102 along the z-axis, and has a light-entry groove 103 at its protruding end. The light-integrating part 101 has a reflective outer wall surface. The light-integrating part 101 is used to guide the light entering through the light-entry groove 103 along the z-axis into the light-reflecting part 102. 2. The light-integrating section 101 is used to parallelize the light rays entering through the light-entry groove 103. The light-reflecting section 102 is provided with a reflecting surface and a light-exiting surface 104. The reflecting surface includes a primary reflecting surface and a secondary reflecting surface, which are offset along the x-axis. The primary reflecting surface includes a first primary reflecting surface 105 and a second primary reflecting surface 106. The first primary reflecting surface 105 is used to guide the light rays entering through the light-integrating section 101 along the y-axis to the light-exiting surface 104. The second primary reflecting surface 106 is used to guide the light rays entering through the light-integrating section 101 along the x-axis to the secondary reflecting surface, and further guides them along the y-axis to the light-exiting surface 104. The light rays entering through the light-entry groove 103 first pass through the light-integrating section 101 for parallelization, then enter the light-reflecting section 102, are reflected by the reflecting surface in the light-reflecting section 102, and finally exit through the light-exiting surface 104.
[0033] Combination Figures 1-6 In the technical solution of this utility model, the light reflecting part 102 of the inner lens 100 of the light source has a first-level reflecting surface 105 and a second-level reflecting surface 106, thereby splitting the light introduced by the light integrating part 101. Part of the light is guided to the light-emitting surface 104 through the first-level reflecting surface 105, and part of the light is guided to the second-level reflecting surface 106 along the x-axis direction first, and then guided to the light-emitting surface 104 by the second-level reflecting surface. This increases the light-emitting length along the x-axis direction on the light-emitting surface 104, and realizes the effect of a single light integrating part 101 having the light-emitting length of multiple light integrating parts 101. For the very slender light-emitting surface with a design, it can improve the light efficiency utilization, reduce the number of LEDs used, reduce costs, and improve the marketability of the product.
[0034] In some embodiments, see Figure 1 The light-emitting surface 104 is a lateral light-emitting surface 104 in the xz plane.
[0035] The first-stage reflecting surface 105 includes an inclined surface tilted about the x-axis to change the direction of light through reflection. The first-stage reflecting surface 105 and the second-stage reflecting surface 106 are distributed back-to-back along the y-axis to split the light introduced by the light integration unit 101. (See [reference]). Figure 3 A portion of the light is guided out through the first-stage reflective surface 105 to the light-emitting surface 104, see [reference]. Figure 4 A portion of it is guided to the secondary reflector via the second primary reflector 106.
[0036] In some embodiments, see Figure 1 The secondary reflector includes an inclined surface tilted about the z-axis, and the second primary reflector 106 includes an inclined surface tilted about the y-axis, to change the direction of light through reflection. Light introduced by the light integration unit 101 is reflected by the second primary reflector 106 to the secondary reflector, and further reflected by the secondary reflector to the light-emitting surface 104. See also... Figure 4 , Figure 6 The light rays reflected from the first-level reflective surface 105 to the light-emitting surface 104 and the light rays reflected from the second-level reflective surface to the light-emitting surface 104 are spliced together in the x-axis direction, thereby increasing the light-emitting length along the x-axis direction on the light-emitting surface 104.
[0037] In some embodiments, the light reflecting section 102 is provided with a secondary reflecting surface on only one side. The second primary reflecting surface 106 reflects part of the light introduced by the light integrating section 101 to the secondary reflecting surface on that one side, and then reflects it to the light emitting surface 104.
[0038] In some embodiments, see Figures 1-6 The light reflecting part 102 is provided with secondary reflective surfaces on both sides. The secondary reflective surfaces include a first secondary reflective surface 107 and a second secondary reflective surface 108 that are mirror-image arranged along the x-axis direction. The second primary reflective surface 106 includes a second primary reflective surface A109 for guiding the light rays incident on the light integrating part 101 along the +x-axis direction to the first secondary reflective surface 107 and a second primary reflective surface B110 for guiding the light rays incident on the light integrating part 101 along the -x-axis direction to the second secondary reflective surface 108.
[0039] In some embodiments, the primary and secondary reflective surfaces are total reflective surfaces.
[0040] Furthermore, in some embodiments, see Figure 1 The primary reflective surface is formed by setting concave or convex textures to create a total reflective surface, and the secondary reflective surface is formed by setting concave or convex textures to create a total reflective surface.
[0041] It is understandable that primary and secondary reflective surfaces can also be combined to form a total reflective surface by applying coatings or other methods.
[0042] In some embodiments, see Figure 1 , Figure 6 The light-emitting surface 104 is provided with concave or convex light-diffusing textures to achieve the required light emission angle to meet regulatory requirements and light emission uniformity.
[0043] An embodiment of this utility model also provides a light source assembly, see [link to embodiment]. Figure 1 , Figure 3 The light source 200 includes the light source 200 and the inner lens 100 of the light source in any of the above embodiments. The light source 200 can be an LED. The light source 200 is positioned directly opposite the light-incident groove 103. The light source 200 can be embedded inside the light-incident groove 103. The light emitted by the light source 200 enters the light-integrating part 101 through the light-incident groove 103. After being parallel integrated inside the light-integrating part 101, it is guided into the light-reflecting part 102.
[0044] In some embodiments, see Figure 7 The light reflecting portion 102 of the light source assembly extends along the x-axis, and the light source assembly is provided with multiple light integrating portions 101 and light sources 200 distributed along the x-axis. This embodiment can be used in applications with very long and thin light-emitting surfaces.
[0045] An embodiment of this utility model also provides a vehicle lamp, including the light source component in any of the above embodiments.
[0046] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0047] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A lens inside a light source, characterized in that, The device includes a light-integrating section and a light-reflecting section. The light-integrating section extends and protrudes from the light-reflecting section along the z-axis, and has a light-incident groove at the protruding end. The light-integrating section has a reflective outer wall surface. The light-integrating section is used to guide light entering through the light-incident groove into the light-reflecting section along a first direction. The light-reflecting section has a reflective surface and a light-emitting surface. The reflective surface includes a primary reflective surface and a secondary reflective surface. The primary reflective surface and the secondary reflective surface are offset along the x-axis. The primary reflective surface includes a first primary reflective surface and a second primary reflective surface. The first primary reflective surface is used to guide light entering through the light-integrating section along the y-axis to the light-emitting surface. The second primary reflective surface is used to guide light entering through the light-integrating section along the x-axis to the secondary reflective surface, and the secondary reflective surface further guides the light entering through the light-integrating section along the y-axis to the light-emitting surface.
2. The inner lens of the light source according to claim 1, characterized in that, The first-level reflective surface includes an inclined surface tilted about the x-axis.
3. The inner lens of the light source according to claim 1, characterized in that, The secondary reflective surface includes an inclined surface tilted about the z-axis, and the second primary reflective surface includes an inclined surface tilted about the y-axis.
4. The inner lens of the light source according to claim 3, characterized in that, The secondary reflective surface includes a first secondary reflective surface and a second secondary reflective surface that are mirror-image arranged along the x-axis direction. The second primary reflective surface includes a second primary reflective surface A for guiding the light rays incident on the light integration part along the +x-axis direction to the first secondary reflective surface and a second primary reflective surface B for guiding the light rays incident on the light integration part along the -x-axis direction to the second secondary reflective surface.
5. The inner lens of the light source according to claim 1, characterized in that, The primary and secondary reflective surfaces are total reflection surfaces.
6. The inner lens of the light source according to claim 5, characterized in that, The primary reflective surface is formed into a total reflective surface by setting concave or convex textures, and the secondary reflective surface is formed into a total reflective surface by setting concave or convex textures.
7. The inner lens of the light source according to claim 1, characterized in that, The light-emitting surface is provided with concave or convex light-diffusing textures.
8. A light source assembly, characterized in that, It includes a light source and an inner lens of the light source as described in any one of claims 1 to 7, wherein the light source is disposed directly opposite the light-incident groove.
9. The light source assembly according to claim 8, characterized in that, The light reflecting part of the light source assembly extends along the x-axis direction, and the light source assembly is provided with multiple light integrating parts and light sources distributed along the x-axis direction.
10. A vehicle light, characterized in that, Includes the light source assembly as described in claim 8 or 9.