Light distribution assembly and luminaire

Abstract

This invention provides a light distribution component and a luminaire. The light distribution component includes: a lens disposed on the light-emitting side of a light source, the light-emitting surface of which has a microstructure; and a fixed bracket connected to the lens and arranged around the outer periphery of the lens and the light source, the inner wall of which has a light-absorbing structure, the light-absorbing structure including a first reflective surface and a second reflective surface arranged at an angle. Part of the light emitted from the light source is refracted by the lens and then mixed by the microstructure before being emitted, while another part of the light shines on the light-absorbing structure, undergoes two reflections by the first and second reflective surfaces, and is then absorbed by the light-absorbing structure. This invention elevates the lens by using a fixed bracket, allowing small-angle light emitted from the light source to exit through the lens, while large-angle light is absorbed by the light-absorbing structure of the fixed bracket, effectively suppressing stray light. Simultaneously, the microstructure on the light-emitting surface of the lens improves light mixing performance and reduces the appearance of yellow spots.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a light distribution component and a lamp. Background Technology

[0002] In the modern lighting field, with the widespread application of new light sources such as LEDs, the requirements for the optical performance of lighting products are becoming increasingly stringent. Whether in home lighting, commercial lighting, or industrial lighting scenarios, not only is sufficient light intensity required, but also stringent standards are placed on light uniformity, stray light control, and light spot quality. The presence of stray light can lead to problems such as yellow spots and light spillage in the illuminated area, severely impacting the user's visual experience; while poor light mixing results in uneven brightness across the illuminated area, further reducing lighting quality.

[0003] Currently, existing light distribution components typically achieve light refraction and distribution using only a single lens or reflector. However, in scenarios requiring small-angle light output and high uniformity, it is often difficult to simultaneously achieve both light efficiency and light quality. For example, issues such as edge light leakage and localized overbrightness may occur, easily leading to yellow spots or dark areas during use. In addition, some designs suppress stray light by adding light-shielding structures or reflective surfaces, but this often sacrifices light output efficiency or results in complex structures and difficult assembly.

[0004] In view of this, it is indeed necessary to improve the existing lighting fixtures to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a light distribution component that effectively suppresses stray light and improves the light mixing effect.

[0006] To achieve the above objectives, this utility model provides a light distribution component, comprising:

[0007] A lens is positioned on the light-emitting side of the light source, and the light-emitting surface of the lens has a microstructure.

[0008] A fixed bracket is connected to the lens and is arranged around the outer periphery of the lens and the light source. The inner wall of the fixed bracket is provided with a light-absorbing structure, which includes a first reflective surface and a second reflective surface arranged at an angle.

[0009] In this process, a portion of the light emitted by the light source is refracted by the lens and then mixed by the microstructure before being emitted. Another portion of the light shines on the light-absorbing structure, and after being reflected twice by the first and second reflecting surfaces, it is absorbed by the light-absorbing structure.

[0010] Optionally, the distance between the light-emitting surface of the lens and the light source is 5 to 6 mm.

[0011] Optionally, the lens includes a first optical part located in the middle region and a second optical part disposed around the middle region, wherein the second optical part is closer to the light source than the first optical part in the optical axis direction of the light source.

[0012] Optionally, the first optical unit includes a first light-incident surface protruding toward the light source. Light rays from the light source irradiating the first optical unit are refracted from the first light-incident surface to the light-out surface and then emitted after being mixed by the microstructure.

[0013] Optionally, the second optical section includes a second light-incident surface facing the first optical section and a third reflective surface facing away from the first optical section. The light irradiated by the light source to the second optical section is refracted from the second light-incident surface to the third reflective surface, then reflected by the third reflective surface to the light-emitting surface, and then emitted after being mixed by the microstructure.

[0014] Optionally, the fixed bracket and the lens are connected by a snap-fit ​​structure, which includes a first snap-fit ​​part disposed at the edge of the lens and a second snap-fit ​​part disposed on the inner wall of the fixed bracket. The first snap-fit ​​part and the second snap-fit ​​part are adapted to each other to connect the lens and the fixed bracket.

[0015] Optionally, it also includes a reflector coaxially arranged with the lens and located on the light-emitting side of the lens, wherein at least part of the light emitted from the lens illuminates the reflector and is reflected by the reflector before being emitted.

[0016] The purpose of this invention is also to provide a luminaire that includes the above-mentioned light distribution components.

[0017] To achieve the above objectives, this utility model provides a lamp, including the aforementioned light distribution component.

[0018] Optionally, it also includes a lamp housing and a light source assembled in the lamp housing, wherein the light source and the lens are both arranged in the space formed by the fixed bracket in the direction of the light source's optical axis.

[0019] Optionally, the lamp housing is provided with a first mounting part and a second mounting part. The first mounting part and the second mounting part are combined to form an installation space that matches the shape of the fixed bracket, and the fixed bracket is snapped into the installation space.

[0020] The beneficial effects of this utility model are:

[0021] This invention elevates the lens by fixing a bracket, allowing small-angle light emitted from the light source to exit through the lens, while large-angle light is absorbed by the light-absorbing structure of the fixing bracket, effectively suppressing stray light. At the same time, microstructures are set on the light-emitting surface of the lens to improve light mixing performance and reduce the appearance of macula. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a lamp conforming to an embodiment of the present utility model;

[0023] Figure 2 yes Figure 1 A sectional view of the central lighting fixture;

[0024] Figure 3 yes Figure 2 Schematic diagram of the middle lens;

[0025] Figure 4 yes Figure 3 A sectional view;

[0026] Figure 5 yes Figure 2 A schematic diagram of the structure of the middle lens from another angle;

[0027] Figure 6 yes Figure 2 Schematic diagram of the fixed bracket in the middle;

[0028] Figure 7 yes Figure 6 A schematic diagram of the light-absorbing structure.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100 - Lighting fixtures;

[0031] 200 - Light distribution assembly; 210 - Lens; 2101 - First optical section; 2111 - First light-incident surface; 2102 - Second optical section; 2121 - Second light-incident surface; 2122 - Third reflecting surface; 2103 - Light-emitting surface; 2104 - Microstructure; 2105 - First locking part; 220 - Fixing bracket; 2201 - Light-absorbing structure; 2211 - First reflecting surface; 2212 - Second reflecting surface; 2202 - Second locking part; 230 - Reflector cup;

[0032] 300 - Light source;

[0033] 400 - Lamp housing, 410 - First mounting part, 420 - Second mounting part. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0036] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] like Figures 1-2 The image shows a lamp 100 provided by this utility model. The lamp 100 includes a light distribution assembly 200, a light source 300, and a lamp housing 400. The light distribution assembly 200 includes a lens 210 and a mounting bracket 220. Part of the light emitted from the light source 300 is refracted by the lens 210 and then mixed by the microstructure 2104 of the light-emitting surface 2103 of the lens 210 before being emitted. The other part of the light is absorbed by the light-absorbing structure 2201 of the mounting bracket 220, effectively reducing the generation of yellow spots and stray light, while also improving light mixing performance.

[0038] like Figure 2 and Figure 4 As shown, lens 210 is disposed on the light-emitting side of light source 300 and is used to refract and distribute the light emitted by light source 300. The distance between the light-emitting surface 2103 of lens 210 and light source 300 is 5-6 mm. Preferably, the distance between the light-emitting surface 2103 of lens 210 and light source 300 is 5.4 mm. This distance can effectively reduce the probability of light from the bottom of light source 300 directly illuminating the non-light-emitting area of ​​lens 210, reducing the possibility of stray light generation from the source; at the same time, this distance can ensure that the effective light emitted by light source 300 can enter lens 210 efficiently, avoiding the loss of illumination efficiency due to excessive distance.

[0039] like Figure 3 As shown, lens 210 includes a first optical section 2101 located in the middle region and a second optical section 2102 disposed around the middle region. In the optical axis direction of light source 300, the second optical section 2102 is closer to light source 300 than the first optical section 2101. The first optical section 2101 is mainly responsible for the refraction and light distribution of small-angle light emitted directly in front of light source 300, while the second optical section 2102 is responsible for the collection and guidance of larger-angle light emitted from the side of light source 300, ensuring that most of the light emitted by light source 300 can be effectively utilized and reducing light waste.

[0040] like Figure 4As shown, the first optical unit 2101 includes a first light-incident surface 2111 protruding towards the light source 300. Light rays from the light source 300 irradiating the first optical unit 2101 enter the interior of the lens 210 through the first light-incident surface 2111, and are then transmitted to the light-exiting surface 2103 of the lens 210. After being mixed by the microstructure 2104 of the light-exiting surface 2103, the light is emitted. The convex curved surface of the first light-incident surface 2111 can increase the incident area of ​​light and improve the light utilization rate.

[0041] The second optical section 2102 includes a second light-incident surface 2121 facing the first optical section 2101 and a third reflective surface 2122 facing away from the first optical section 2101. Light rays from the light source 300 illuminating the second optical section 2102 are first refracted from the second light-incident surface 2121 into the interior of the lens 210, then transmitted to the third reflective surface 2122, and after being reflected by the third reflective surface 2122, their propagation direction is changed, and finally transmitted to the light-emitting surface 2103. After being mixed by the microstructure 2104, the light is emitted. The third reflective surface 2122 can deflect and guide side light rays, preventing side light rays from directly illuminating the inner wall of the fixed bracket 220 and forming stray light. At the same time, it guides them to the light-emitting surface 2103 to participate in light mixing, further improving the uniformity of the light spot.

[0042] like Figure 5 As shown, the light-emitting surface 2103 of lens 210 is provided with a microstructure 2104. This microstructure 2104 adopts a combined structure of a central large sphere and a surrounding array of small spheres. Optionally, the microstructure 2104 has a central large sphere (radius of curvature r = 1.2–1.5 mm) surrounded by an array of 8 or 6 small spheres (radius of curvature r = 1–1.2 mm). This microstructure 2104, through the spherical units with different curvatures, refracts and scatters light multiple times, effectively mixing light of different angles and intensities, thus eliminating brightness differences within the light spot and solving the yellow spot problem. Simultaneously, the arrayed distribution of the spherical units ensures the uniformity of the light mixing effect, avoiding light spot defects caused by insufficient local light mixing.

[0043] like Figure 2 As shown, the fixing bracket 220 connects to the lens 210 and is arranged around the outer periphery of the lens 210 and the light source 300. Specifically, as... Figure 3 and Figure 6As shown, the fixed bracket 220 and the lens 210 are connected by a snap-fit ​​structure. The snap-fit ​​structure includes a first snap-fit ​​portion 2105 disposed at the edge of the lens 210 and a second snap-fit ​​portion 2202 disposed on the inner wall of the fixed bracket 220. The first snap-fit ​​portion 2105 and the second snap-fit ​​portion 2202 are mutually adapted to connect the lens 210 and the fixed bracket 220. In this embodiment, the first snap-fit ​​portion 2105 is an annular protrusion disposed at the edge of the lens 210, and the second snap-fit ​​portion 2202 is an elastic hook disposed on the inner wall of the fixed bracket 220. This snap-fit ​​structure has high stability, is easy to assemble, and can be repaired and replaced at any time.

[0044] like Figure 6 As shown, the inner wall of the fixed bracket 220 is provided with a light-absorbing structure 2201. The surface of the light-absorbing structure 2201 is black and the reflectivity is only 5%, which can efficiently absorb the reflected light.

[0045] like Figure 7 As shown, the light-absorbing structure 2201 includes a first reflective surface 2211 and a second reflective surface 2212 arranged at an angle. A portion of the light emitted from the light source 300 (mainly scattered rays from the bottom and outer periphery) does not enter the lens 210 but directly illuminates the inner wall of the fixed bracket 220. This portion of light first illuminates the first reflective surface 2211, is reflected by it, and then transmitted to the second reflective surface 2212. It undergoes a second reflection by the second reflective surface 2212 and is finally absorbed by the light-absorbing material of the fixed bracket 220. This double-reflection design extends the propagation path of light within the light-absorbing structure 2201, increases the probability of light absorption, and prevents stray light from being directly emitted after a single reflection.

[0046] like Figure 2 As shown, the light distribution assembly 200 also includes a reflector 230 coaxially arranged with the lens 210 and located on the light-emitting side of the lens 210. Among the light emitted from the lens 210, some small-angle light rays are emitted directly, while some larger-angle light rays are emitted onto the inner wall of the reflector 230 and reflected by the reflector 230 before being emitted. This can further optimize the shape of the light spot and improve the uniformity of illumination in the lighting area.

[0047] In summary, the light emitted by the light source 300 is divided into three parts: the first part enters the first optical section 2101 of the lens 210, is refracted, and is mixed by the microstructure 2104 before exiting; the second part enters the second optical section 2102 of the lens 210, is refracted, reflected by the third reflecting surface 2122, and is mixed by the microstructure 2104 before exiting; the third part (stray light) illuminates the light-absorbing structure 2201 of the fixed bracket 220, and is absorbed after two reflections. If a reflector 230 is provided, the larger angle rays in the emitted light are reflected by the reflector 230 and then adjusted before exiting. The light distribution assembly 200 composed of the above structures can effectively suppress stray light, make the light spot more uniform, effectively solve the macula problem, and improve the illumination efficiency.

[0048] This utility model also provides a lamp 100, which includes a lamp housing 400 and a light source 300 assembled in the lamp housing 400. In the optical axis direction of the light source 300, the light source 300 and the lens 210 are both arranged in the space formed by the fixed bracket 220, thereby ensuring that the light emitted by the light source 300 is fully utilized by the lens 210 and the light-absorbing structure 2201, effectively improving the light utilization rate.

[0049] like Figure 2 As shown, the lamp housing 400 is provided with a first mounting part 410 and a second mounting part 420. The first mounting part 410 and the second mounting part 420 combine to form an installation space that matches the shape of the fixed bracket 220. The fixed bracket 220 is snapped into the installation space. In this embodiment, the outer wall of the fixed bracket 220 is a spherical surface. The first mounting part 410 and the second mounting part 420 combine to form a spherical installation space. The two fit together to achieve quick assembly and fixation of the fixed bracket 220. This not only facilitates assembly but also ensures the stability of the fixed bracket 220 within the lamp housing 400, preventing the light distribution component 200 from shifting due to vibration during transportation and use of the lamp 100.

[0050] In summary, this invention raises the lens 210 by fixing the bracket 220, so that small-angle light emitted by the light source 300 is emitted after passing through the lens 210, while large-angle light is absorbed by the light-absorbing structure 2201 of the fixing bracket 220, effectively suppressing stray light. At the same time, a microstructure 2104 is provided on the light-emitting surface 2103 of the lens 210, which improves the light mixing performance and reduces the appearance of macula.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A light distribution component, characterized in that, include: A lens (210) is disposed on the light-emitting side of the light source (300), and the light-emitting surface (2103) of the lens (210) is provided with a microstructure (2104); A fixed bracket (220) is connected to the lens (210) and is arranged around the outer periphery of the lens (210) and the light source (300). The inner wall of the fixed bracket (220) is provided with a light-absorbing structure (2201). The light-absorbing structure (2201) includes a first reflective surface (2211) and a second reflective surface (2212) arranged at an angle. In this process, a portion of the light emitted by the light source (300) is refracted by the lens (210) and then mixed by the microstructure (2104) before being emitted. Another portion of the light shines on the light-absorbing structure (2201), and after being reflected twice by the first reflective surface (2211) and the second reflective surface (2212), it is absorbed by the light-absorbing structure (2201).

2. The light distribution component according to claim 1, characterized in that, The distance between the light-emitting surface (2103) of the lens (210) and the light source (300) is 5-6 mm.

3. The light distribution component according to claim 1, characterized in that, The lens (210) includes a first optical part (2101) located in the middle region and a second optical part (2102) disposed around the middle region. In the optical axis direction of the light source (300), the second optical part (2102) is closer to the light source (300) than the first optical part (2101).

4. The light distribution component according to claim 3, characterized in that, The first optical unit (2101) includes a first light-incident surface (2111) protruding toward the light source (300). The light rays irradiated by the light source (300) onto the first optical unit (2101) are refracted from the first light-incident surface (2111) to the light-out surface (2103), and then emitted after being mixed by the microstructure (2104).

5. The light distribution component according to claim 3, characterized in that, The second optical unit (2102) includes a second light-incident surface (2121) facing the first optical unit (2101) and a third reflective surface (2122) facing away from the first optical unit (2101). The light rays irradiated by the light source (300) onto the second optical unit (2102) are refracted from the second light-incident surface (2121) to the third reflective surface (2122), and then reflected by the third reflective surface (2122) to the light-emitting surface (2103), and then emitted after being mixed by the microstructure (2104).

6. The light distribution component according to claim 1, characterized in that, The fixed bracket (220) and the lens (210) are connected by a snap-fit ​​structure. The snap-fit ​​structure includes a first snap-fit ​​part (2105) disposed at the edge of the lens (210) and a second snap-fit ​​part (2202) disposed on the inner wall of the fixed bracket (220). The first snap-fit ​​part (2105) and the second snap-fit ​​part (2202) are adapted to each other to connect the lens (210) and the fixed bracket (220).

7. The light distribution component according to claim 1, characterized in that, It also includes a reflector (230) coaxially arranged with the lens (210) and located on the light-emitting side of the lens (210). Light emitted from the lens (210) at least partially illuminates the reflector (230) and is reflected by the reflector (230) before being emitted.

8. A lamp, characterized in that, Includes the light distribution component as described in any one of claims 1-7.

9. The lamp according to claim 8, characterized in that, It also includes a lamp housing (400) and a light source (300) assembled in the lamp housing (400). In the optical axis direction of the light source (300), both the light source (300) and the lens (210) are arranged in the space enclosed by the fixed bracket (220).

10. The lamp according to claim 9, characterized in that, The lamp housing (400) is provided with a first mounting part (410) and a second mounting part (420). The first mounting part (410) and the second mounting part (420) are combined to form an installation space that is adapted to the shape of the fixed bracket (220). The fixed bracket (220) is snapped into the installation space.

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