Light distribution assembly and luminaire

Abstract

The utility model provides a kind of light distribution assembly and lamp, wherein, light distribution assembly includes: primary reflector, is configured to the light emitted by light source carries out reflection;Microprism lens is coaxially arranged with primary reflector, for receiving direct light emitted from light source and the reflected light emitted from primary reflector, and the direct light and reflected light are mixed light;Secondary reflector is coaxially arranged with microprism lens, for receiving mixed light emitted from microprism lens, and the mixed light is twice reflected;Wherein, microstructure is equipped on microprism lens, primary reflector is formed by at least two reflection components combination.This light distribution assembly of the utility model is split into at least two reflection components by primary reflector, effectively reduces high ratio, improves the uniformity of vacuum evaporation coating, to improve reflectivity;Microprism lens uses microstructure design, substantially improves the uniformity of mixed light, significantly improves illumination quality.

Description

Technical Field

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

[0002] In the optical architecture design of existing lighting products, the light distribution component is a core component, and its performance directly determines the lighting effect of the entire luminaire. Currently, common light distribution components on the market typically consist of reflectors and lenses. However, these light distribution components generally suffer from the following technical problems in practical applications:

[0003] Firstly, the reflectors suffer from low reflection efficiency and poor coating uniformity. Existing reflectors often employ a single-structure design, requiring a significant depth to effectively control the light source. This results in an excessively high height-to-distance ratio (the ratio of height to opening diameter). During reflective film fabrication, this high ratio makes it difficult for the deposited material emitted from the evaporation source to adhere evenly to the inner surface of the reflector, especially in the deeper regions. This leads to uneven coating thickness, resulting in significant differences in reflectivity across different areas. In some areas, the reflectivity is even far below design expectations, hindering efficient light reflection and causing substantial light energy loss, thus reducing the overall luminous efficiency of the lamp.

[0004] Secondly, the light mixing effect of lenses is poor and significantly limited by manufacturing processes. Most lenses in existing lighting fixtures employ a single optical structure, such as a plane lens or a simple convex lens. These lenses struggle to achieve sufficient mixing of direct light emitted from the light source and reflected light emitted through a reflector, easily leading to problems such as uneven light spots, large differences in brightness between the edges and the center, and uneven color mixing, thus affecting lighting quality. Furthermore, some lenses are manufactured using borosilicate glass through a molding process. Due to the physical properties of borosilicate glass, the molding depth cannot be too deep, further restricting the design of the lens's optical structure and preventing the lens from improving its light mixing effect by increasing structural complexity.

[0005] In view of this, it is indeed necessary to improve the existing light distribution components to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a light distribution component that can effectively improve reflection efficiency and light mixing effect.

[0007] To achieve the above objectives, this utility model provides a light distribution component, comprising:

[0008] A primary reflector, configured to reflect a portion of the light emitted by the light source;

[0009] The microprism lens, coaxially arranged with the primary reflector, is used to receive direct light emitted from the light source and reflected light emitted from the primary reflector, and to mix the direct and reflected light.

[0010] A secondary reflector, coaxially arranged with the microprism lens, is used to receive the mixed light emitted through the microprism lens and to reflect the mixed light a second time.

[0011] The microprism lens has a microstructure, and the primary reflector is formed by combining at least two reflective components.

[0012] Optionally, the microstructure is disposed on the side of the microprism lens facing the primary reflector, and the microstructure includes a primary optical part and a secondary optical part disposed around the primary optical part.

[0013] Optionally, the microstructure includes a first protrusion protruding toward the primary reflector and a second protrusion protruding toward the secondary reflector, wherein the protrusion height of the first protrusion is greater than that of the second protrusion.

[0014] Optionally, the arrangement density of microstructures in the central region of the microprism lens differs from that in the edge region.

[0015] Optionally, both the side of the microprism lens facing the primary reflector and the side facing the secondary reflector are provided with anti-reflection and anti-reflection coatings.

[0016] Optionally, reflective films are provided on the reflective surfaces of both the primary and secondary reflectors.

[0017] Optionally, the reflective film can be a multilayer dielectric film.

[0018] The purpose of this utility model is also to provide a lamp that includes the above-mentioned light distribution components.

[0019] To achieve the above objectives, this utility model provides a lamp that includes the aforementioned light distribution component.

[0020] Optionally, it also includes a lamp housing and a light source assembled in the lamp housing, a primary reflector surrounding the light source, a microprism lens covering the light-emitting end of the primary reflector, and a secondary reflector snapped onto the side of the lamp housing away from the light source, and pressing the microprism lens tightly.

[0021] Optionally, the lamp housing is provided with a first mounting part and a second mounting part, and the light-emitting end of the primary reflector and the microprism lens are both sandwiched between the first mounting part and the second mounting part.

[0022] The beneficial effects of this utility model are:

[0023] The light distribution component of this invention effectively reduces the height-to-distance ratio and improves the uniformity of the vacuum evaporation coating by splitting the primary reflector into at least two reflective components, thereby increasing reflectivity. The microprism lens employs a microstructure design, effectively solving the problems of poor light mixing and process limitations inherent in existing lenses. It achieves thorough light mixing, significantly improving light mixing uniformity and avoiding issues such as uneven light spots and uneven color mixing, thus significantly improving lighting quality and meeting the needs for uniform lighting in various scenarios. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a lamp conforming to an embodiment of the present utility model;

[0025] Figure 2 yes Figure 1 A sectional view of the lamp shown;

[0026] Figure 3 yes Figure 1 A cross-sectional view of the lamp shown from another angle;

[0027] Figure 4 This is the assembly drawing of the first reflector;

[0028] Figure 5 This is an assembly drawing of another embodiment of the first reflector;

[0029] Figure 6 This is a schematic diagram of the structure of a microprism lens;

[0030] Figure 7 yes Figure 6 Schematic diagram of the microstructure;

[0031] Figure 8 This is a schematic diagram of another embodiment of the microprism lens;

[0032] Figure 9 yes Figure 8 Side view.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100 - Lighting fixtures;

[0035] 200-Light distribution assembly, 210-Primary reflector, 2101-Reflective component, 220-Microprism lens, 2201-Microstructure, 2211-Primary optics, 2212-Secondary optics, 2213-First protrusion, 2214-Second protrusion, 230-Secondary reflector, 2301-First snap-fit;

[0036] 300 - Light source;

[0037] 400 - Lamp housing, 410 - First mounting part, 420 - Second mounting part, 430 - Second snap-fit ​​part, 440 - Mounting clip, 450 - Heat dissipation part. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] like Figures 1-2 As shown, a lamp 100 provided by this utility model is provided. The lamp 100 includes a lamp housing 400, a light source 300, and a light distribution assembly 200. The light distribution assembly 200 includes a primary reflector 210, a microprism lens 220, and a secondary reflector 230, which are coaxially arranged to form a complete optical path, ensuring that light can be efficiently transmitted and controlled according to a preset optical path.

[0042] A primary reflector 210 is positioned around the light source 300, receiving a portion of the light emitted from the light source 300 and reflecting this portion to the microprism lens 220, reducing light loss. The microprism lens 220 covers the light-emitting end of the primary reflector 210, ensuring complete reception of both direct light emitted from the light source 300 and reflected light emitted from the primary reflector 210, and effectively mixing the direct and reflected light. A secondary reflector 230 is snapped onto the side of the luminaire housing 400 away from the light source 300. It receives the mixed light emitted through the microprism lens 220 and performs secondary reflection of the mixed light, further optimizing the light distribution effect, improving light utilization and illumination uniformity. Simultaneously, the secondary reflector 230 presses the microprism lens 220 firmly, ensuring a tight fit between the secondary reflector 230 and the microprism lens 220, preventing light leakage due to gaps.

[0043] like Figures 4-5As shown, the primary reflector 210 is formed by combining at least two reflective components 2101. Specifically, it can adopt various splitting structures such as "one-to-two" or "one-to-three," which are not limited here. By splitting the primary reflector 210 into multiple reflective components 2101, the height-to-distance ratio of each reflective component 2101 can be effectively reduced. This allows the deposited material emitted from the evaporation source to adhere more evenly to the inner surface of each reflective component 2101 during the vacuum evaporation coating process, significantly improving coating uniformity and thus ensuring that the primary reflector 210 as a whole has a high reflectivity.

[0044] In one embodiment, such as Figure 4 As shown, when the primary reflector 210 adopts a "one-to-two" structure, the original integral primary reflector 210 is symmetrically split into two semi-conical reflective components 2101 along the axis.

[0045] In another embodiment, such as Figure 5 As shown, when the primary reflector 210 adopts a "one-to-three" structure, the original integral primary reflector 210 is divided into three conical reflective components 2101 along the central axis.

[0046] The reflective surface of the primary reflector 210 is provided with a reflective film, which is a multilayer dielectric film formed by a vacuum evaporation deposition process. Under vacuum conditions, the deposition material (such as silicon oxide, titanium oxide, etc.) is evaporated into a gaseous state by an evaporation source. The gaseous deposition material is then sequentially attached to the inner surface of the reflective component 2101 according to a preset film structure, forming a multilayer dielectric film. Utilizing the principle of light interference, the multilayer dielectric film can effectively improve reflectivity and reduce light loss during the reflection process.

[0047] The microprism lens 220 has a microstructure 2201, which can effectively improve the light mixing effect.

[0048] In one embodiment, such as Figures 6-7 As shown, microstructure 2201 is disposed on the side of microprism lens 220 facing primary reflector 210. Microstructure 2201 includes a main optical section 2211 and a secondary optical section 2212 disposed around the main optical section 2211. Preferably, the main optical section 2211 is a large circular structure, which can ensure efficient light transmission and improve the luminous efficiency of lamp 100; the secondary optical section 2212 consists of eight small circular structures disposed around the large circular structure. These eight small circular structures can scatter light, effectively improve the light mixing effect, and allow direct light and reflected light to be fully mixed inside microprism lens 220, reducing the phenomenon of uneven light spot.

[0049] In another embodiment, such as Figures 8-9As shown, the microstructure 2201 includes a first protrusion 2213 protruding toward the primary reflector 210 and a second protrusion 2214 protruding toward the secondary reflector 230, forming a double-sided protrusion structure. The protrusion height of the first protrusion 2213 is greater than that of the second protrusion 2214. This design is not limited by the molding depth of the borosilicate glass and can increase the number of refractions and reflections of light inside the microprism lens 220 through the double-sided protrusion structure, thereby achieving sufficient light mixing and ensuring the uniformity of the mixed light.

[0050] Furthermore, the arrangement density of microstructures 2201 in the central region of the microprism lens 220 differs from that in the edge region. Preferably, the arrangement density of microstructures 2201 on the microprism lens 220 gradually increases from the center of the microprism lens 220 outwards. Since the light emitted by the light source 300 is more concentrated in the central region, using a smaller arrangement density of microstructures 2201 can reduce the scattering loss of light in the central region, increase the light transmittance, and at the same time, moderately mix the strong light in the center, initially disperse the concentrated light spot, avoid directly forming a bright spot, and supplement the light intensity in the edge region. In the edge region of the microprism lens 220, the light energy is relatively weak and the problem of uneven color mixing is prone to occur. Using a larger arrangement density of microstructures 2201 can enhance the scattering effect of light in the edge region, so that the light in the edge region can be fully mixed with the light in the central region, effectively solving the problem of uneven color mixing in the edge region, and improving the uniformity of the entire light spot.

[0051] In another embodiment, the density of microstructures 2201 on the microprism lens 220 gradually decreases from the center of the microprism lens 220 outwards. The higher density of microstructures 2201 in the central region can fully utilize the concentrated light energy, ensuring a certain light mixing effect while reducing energy loss caused by light scattering, increasing the light transmittance in the central region, and making the light spot in the central region brighter. In the edge region of the microprism lens 220, the lower density of microstructures 2201 can avoid excessive interference with weak light, allowing light to propagate relatively smoothly. At the same time, since the microstructures 2201 still have a certain scattering effect, they can moderately mix the light in the edge region, better blending it with the light propagating from the central region, thereby improving the uniformity of the entire light spot.

[0052] The microprism lens 220 has anti-reflection coatings on both the side facing the primary reflector 210 and the side facing the secondary reflector 230. These anti-reflection coatings are formed using a vacuum evaporation deposition process. The anti-reflection coatings effectively reduce light reflection loss on the surface of the microprism lens 220, allowing more light to pass through and further improving the overall optical efficiency of the luminaire 100.

[0053] The secondary reflector 230 also has a reflective film made of multilayer dielectric film on its reflective surface. The manufacturing process of this reflective film is the same as that of the reflective film of the primary reflector 210. In this way, the secondary reflector 230 can receive the mixed light emitted by the microprism lens 220 and reflect the mixed light a second time, reflecting the light that may have exceeded the preset light distribution range back to the illumination area, further improving the utilization rate of light. At the same time, it can fine-tune the emission angle of the mixed light, optimize the light distribution curve, and make the lighting effect more in line with the actual application requirements.

[0054] like Figures 2-3 As shown, the lamp housing 400 is provided with a first mounting part 410 and a second mounting part 420. The light-emitting end of the primary reflector 210 and the microprism lens 220 are both clamped between the first mounting part 410 and the second mounting part 420. Through the clamping action of the first mounting part 410 and the second mounting part 420, the primary reflector 210 and the microprism lens 220 can be stably fixed, while ensuring the coaxiality between the primary reflector 210, the microprism lens 220 and the lamp housing 400, further improving the overall optical performance of the light distribution assembly 200.

[0055] The lamp housing 400 has a second snap-fit ​​portion 430, and the secondary reflector 230 has a first snap-fit ​​portion 2301 corresponding to the second snap-fit ​​portion 430. Through the snap-fit ​​of the first snap-fit ​​portion 2301 and the second snap-fit ​​portion 430, the secondary reflector 230 is securely installed inside the lamp housing 400. Furthermore, in this embodiment, the first snap-fit ​​portion 2301 is an elastic snap-fit ​​portion, making the installation and removal of the secondary reflector 230 very convenient, which is beneficial for the installation and maintenance of the lamp 100.

[0056] The outer wall of the lamp housing 400 is provided with mounting clips 440. After the internal structure of the lamp 100 is installed, the lamp 100 is installed to the mounting surface (ceiling, wall, etc.) and is tightly fixed to the mounting surface by the mounting clips 440.

[0057] In addition, a heat dissipation part 450 is provided above the lamp 100, through which the heat generated by the lamp 100 during use can be effectively dissipated.

[0058] In summary, the light distribution component 200 of this invention effectively reduces the height-to-distance ratio and improves the uniformity of the vacuum evaporation coating by splitting the primary reflector 210 into at least two reflective components 2101, thereby increasing reflectivity. The microprism lens 220, employing a unique microstructure 2201 design, effectively solves the problems of poor light mixing and process limitations inherent in existing lenses, achieving thorough light mixing, significantly improving light mixing uniformity, avoiding problems such as uneven light spots and uneven color mixing, and significantly improving lighting quality, thus meeting the needs for uniform lighting in different scenarios.

[0059] 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 primary reflector (210) is configured to reflect a portion of the light emitted by the light source (300); A microprism lens (220) is coaxially arranged with the primary reflector (210) for receiving direct light emitted from the light source (300) and reflected light emitted from the primary reflector (210), and for mixing the direct light and the reflected light. A secondary reflector (230) is coaxially arranged with the microprism lens (220) and is used to receive the mixed light emitted through the microprism lens (220) and reflect the mixed light a second time. The microprism lens (220) is provided with a microstructure (2201), and the primary reflector (210) is formed by combining at least two reflective components (2101).

2. The light distribution component according to claim 1, characterized in that, The microstructure (2201) is disposed on the side of the microprism lens (220) facing the primary reflector (210), and the microstructure (2201) includes a primary optical part (2211) and a secondary optical part (2212) disposed around the primary optical part (2211).

3. The light distribution component according to claim 1, characterized in that, The microstructure (2201) includes a first protrusion (2213) protruding toward the primary reflector (210) and a second protrusion (2214) protruding toward the secondary reflector (230), wherein the protrusion height of the first protrusion (2213) is greater than the protrusion height of the second protrusion (2214).

4. The light distribution component according to claim 2 or 3, characterized in that, The arrangement density of the microstructure (2201) in the central region of the microprism lens (220) is different from that in the edge region.

5. The light distribution component according to claim 1, characterized in that, The microprism lens (220) is provided with anti-reflection and anti-reflection coatings on both the side facing the primary reflector (210) and the side facing the secondary reflector (230).

6. The light distribution component according to claim 1, characterized in that, The reflective surfaces of both the primary reflector (210) and the secondary reflector (230) are provided with reflective films.

7. The light distribution component according to claim 6, characterized in that, The reflective film is a multilayer dielectric film.

8. A lamp, characterized in that, Includes the light distribution component as described in any one of claims 1 to 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). The primary reflector (210) is arranged around the light source (300). The microprism lens (220) is covered on the light-emitting end of the primary reflector (210). The secondary reflector (230) is snapped onto the side of the lamp housing (400) away from the light source (300) and presses the microprism lens (220) tightly.

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), and the light-emitting end of the primary reflector (210) and the microprism lens (220) are both sandwiched between the first mounting part (410) and the second mounting part (420).

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