A lens, indirect lighting device and diffused soft indirect lighting system
By adjusting the shape of LED lights through lens design, uniform diffused soft light is formed, which solves the problems of high power and poor lighting effect of existing indirect lighting systems, and realizes uniform lighting and healthy lighting without light pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN LIANTENG GUANGYUAN TECH CO LTD
- Filing Date
- 2022-09-27
- Publication Date
- 2026-05-22
AI Technical Summary
Existing indirect lighting systems require high power from LED lights, increasing energy costs while providing poor lighting performance.
The design employs a lens system, including light-collecting, total reflection, transmission, and projection structures, to adjust the light pattern of the LED lights and create a uniform diffuse soft light effect. By using a lens-based matrix combination technology, a strip light source is formed, achieving uniform light distribution.
It reduces energy costs, achieves uniform lighting with no light pollution, reduces glare, and improves eye health.
Smart Images
Figure CN115585414B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of diffuse light illumination technology, and more particularly to a lens, an indirect lighting device, and a diffuse soft light indirect lighting system. Background Technology
[0002] The emergence and widespread adoption of LEDs have greatly enriched the design possibilities of lighting products, resulting in a variety of novel lighting fixtures and indirect lighting systems focused on comfortable illumination. However, while current LED lighting designs are diverse and vibrant, for pure lighting needs, regardless of the design, light pollution from localized bright light is unavoidable. Even with anti-glare technology, the naked eye cannot look directly at the lighting fixtures, posing a potential threat to people's eye health.
[0003] Indirect lighting systems achieve illumination by illuminating a secondary surface (such as a ceiling or wall) and reflecting light from that surface toward the object (or space) to be illuminated. An indirect lighting system includes a main light source whose light is directed to the target through a specific device (usually a special lens), thus achieving indirect lighting. The light source is hidden and not directly visible. Indirect lighting systems are more aesthetically pleasing and safer, effectively reducing the impact of glare.
[0004] In large lighting venues such as school classrooms, libraries, museums, and fully enclosed indoor stadiums, breakthrough technologies are urgently needed to achieve light-free lighting. With the reduction in the cost of LED single lamps, matrix-type ultra-low power LED light source lighting can achieve a new lighting method with no light pollution.
[0005] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art:
[0006] Indirect lighting systems require higher power from LED lights, increasing energy costs, while also resulting in poor lighting performance. Summary of the Invention
[0007] The purpose of this invention is to provide a lens, an indirect lighting device, and a diffuse soft light indirect lighting system to solve the technical problems of existing indirect lighting systems, which require high power from LED lamps, increasing energy costs, and resulting in poor lighting effects. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.
[0008] To achieve the above objectives, the present invention provides the following technical solution:
[0009] This invention provides a lens for adjusting the output light pattern of an LED lamp, comprising a lens body with a centrally symmetrical structure, including a light-collecting structure, a total internal reflection structure, a transmission structure, and a projection structure. The light-collecting structure accommodates the LED lamp and constrains and guides the light output to the transmission and total internal reflection structures. The total internal reflection structure reflects and collimates stray light from the LED lamp outside a preset angle. The transmission structure outputs quasi-parallel light within the preset angle. The projection structure uniformly distributes the light adjusted by the total internal reflection structure and shapes the light intensity.
[0010] Preferably, the light-collecting structure is a hollow column or frustum shape, and the sidewalls of the light-collecting structure are inclined or vertical, so that the light from the LED lamp is refracted onto the surface of the total reflection structure through the inner sidewalls.
[0011] Preferably, the total reflection structure is a cone, and the sidewalls of the cone are smooth surfaces or segmented curved surfaces.
[0012] Preferably, the preset angle is in the range of 20 to 40 degrees.
[0013] Preferably, the cross-section of the transmission structure is arc-shaped, the projection structure is located around the transmission structure, and the projection structure is a plane or a curved surface.
[0014] Preferably, the lens body is cylindrical, and a cylindrical first sidewall is provided on the outer side of the total reflection structure. An astigmatic region is formed between the first sidewall and the second sidewall of the lens body. The astigmatic region can supplement the light between adjacent lenses.
[0015] Preferably, the inner wall of the light-collecting structure and the transmission structure form a refractive region.
[0016] An indirect lighting device includes one or more lenses as described in any one of the above claims, and further includes a fixing groove; a plurality of the lenses are evenly distributed in the fixing groove; the LED is located inside the lens body; the lenses are fixedly connected to the fixing groove, and the fixing groove is capable of accommodating a plurality of the lenses; the fixing groove is straight or arc-shaped.
[0017] Preferably, the indirect lighting device further includes a PCBA board, which is located inside the fixing groove and electrically connected to the LED lamp. The PCBA board is a flexible PCBA board.
[0018] A diffuse soft light indirect lighting system includes multiple indirect lighting devices as described above, wherein the multiple indirect lighting devices form a single row structure or a multi-row structure, and adjacent indirect lighting devices in each row are fixedly connected.
[0019] Implementing one of the above-described technical solutions of the present invention has the following advantages or beneficial effects:
[0020] This invention presents a diffuse soft light indirect lighting system, a combined design scheme. It uses an indirect lighting device to transform individual LED light sources into strip light sources, and then uses lens-based matrix combination technology to fuse these strip light sources, resulting in uniform illumination across the entire surface. By adapting the illuminance required for the application, smaller, concentrated light sources are transformed into diffused forms with equivalent luminous flux, achieving the same illuminance requirements. This transforms the light source into an indirect lighting system that is directly visible to the naked eye, eliminating glare and light reflection within the illuminated area. The light is evenly distributed throughout the space, truly bringing sunlight indoors. Furthermore, when combined with colored LED lights and video control technology, it can also simulate sky or landscape background lighting, benefiting human eye and mental health. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:
[0022] Figure 1 This is a first-view perspective perspective view of the lens body according to Embodiment 1 of the present invention;
[0023] Figure 2 This is a second-view perspective perspective view of the lens body according to Embodiment 1 of the present invention;
[0024] Figure 3 This is a top view of the lens body according to Embodiment 1 of the present invention;
[0025] Figure 4 yes Figure 3 Sectional view of AA;
[0026] Figure 5 This is a schematic diagram of the light rays of the lens body according to Embodiment 1 of the present invention;
[0027] Figure 6 This is a schematic diagram of the indirect lighting device according to Embodiment 2 of the present invention;
[0028] In the diagram: 1. Lens body; 11. Light-collecting structure; 12. Total internal reflection structure; 13. Transmission structure; 14. Projection structure; 15. Astigmatism area; 16. First sidewall; 17. Second sidewall; 2. LED light; 3. Fixing groove; 4. PCBA board. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the present invention clearer, various exemplary embodiments described below will be referenced to the accompanying drawings, which form part of the exemplary embodiments, illustrating various exemplary embodiments that may be used to implement the present invention. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. It should be understood that they are merely examples of processes, methods, and apparatuses consistent with some aspects of the present invention disclosed as detailed in the appended claims, and other embodiments may be used, or structural and functional modifications may be made to the embodiments listed herein without departing from the scope and spirit of the present invention.
[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the referred element must have a specific orientation, or be constructed and operated in a specific orientation. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. The term "a plurality" means two or more. The terms "connected" and "linked" should be interpreted broadly, for example, they can refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, communication connections, direct connections, indirect connections through an intermediate medium, and can refer to the internal communication of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more of the related listed items. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0031] To illustrate the technical solution described in this invention, specific embodiments are described below, showing only the parts related to the embodiments of this invention.
[0032] Example 1:
[0033] like Figure 1-5As shown, this invention provides a lens for adjusting the output light shape of an LED lamp 2. The lens body 1 has a centrally symmetrical structure, resulting in a more uniform output light shape. It includes a light-collecting structure 11, a total internal reflection structure 12, a transmission structure 13, and a projection structure 14. The light-collecting structure 11 houses the LED lamp; therefore, it is a cavity structure. It constrains and guides the light output to the transmission structure 13 and the total internal reflection structure 14, thus adjusting the light transmission direction and facilitating subsequent light shaping. The total internal reflection structure 12 reflects and collimates stray light from the LED lamp 2 outside a preset angle. Preferably, the total internal reflection structure 12 is made of PC material. When its refractive index n = 1.584, since the outer side of the total internal reflection structure 12 is air, total internal reflection can be achieved when the incident angle is only about 39.147 degrees. Of course, other transparent materials can also be used for the total internal reflection structure 12. The large incident angle of stray light from the LED lamp 2 facilitates achieving the conditions for total internal reflection. The transmission structure 13 outputs quasi-parallel light within a preset angle. Quasi-parallel light is approximately parallel light. After adjustment to quasi-parallel light, the point light source within the preset angle of the LED lamp 2 is converted into parallel light, which facilitates better adjustment and control of the light output direction of the LED lamp 2 and also makes the light output of the LED lamp 2 softer. The projection structure 14 evenly distributes the light adjusted by the total reflection structure 12 and shapes the light intensity, so that stray light outside the preset angle of the LED lamp also achieves parallel light output, making the light output of the LED lamp 2 softer. This invention, through the cooperation of the light-collecting structure 11, the total reflection structure 12, the transmission structure 13, and the projection structure 14, constrains all the light energy contained in the spherical emission angle of the LED lamp into a specific cylindrical emission angle, thereby achieving full utilization of the LED light source and reducing energy costs. At the same time, when the light is fully irradiated on a plane or a specific curved surface, a bright band is formed, which greatly reduces the light intensity per unit area compared to a direct light source. The illumination requirement is solved by the maximum area whole-body emission method, thereby realizing lampless lighting with a directly visible light source and better lighting effect.
[0034] As an optional implementation method, such as Figure 4 As shown, the light-collecting structure 11 is a hollow cylindrical or frustum-shaped structure. The structure shown in the figure is cylindrical. This structure facilitates the refraction of stray light from the LED lamp 2 onto the surface of the total reflection structure through the side wall. The inner wall of the light-collecting structure 11 is inclined or vertical. The structure shown in the figure is inclined at a certain angle, which refracts the light from the LED lamp onto the surface of the total reflection structure 12 through the inner wall.
[0035] As an optional implementation, the sidewalls of the total internal reflection structure 12 are rounded surfaces or segmented curved surfaces. Rounded surfaces facilitate manufacturing and allow for a natural transition in the reflected light. Segmented curved surfaces allow for adaptive adjustments to stray light from LEDs 2 at different positions and angles, resulting in better total internal reflection. Rounded or segmented curved surfaces also allow for gradual angle reduction by adjusting the emitted light angle according to different positions of the light-collecting structure 11, ensuring collimated output of the light.
[0036] As an optional implementation, the preset angle range is 20 to 40 degrees. This preset angle range ensures both the intensity of the main light beam and that stray light meets the incident angle requirements of the total internal reflection structure 12. Preferably, it is 30 degrees, so that the LED light 2 is the main light beam within the preset angle (…). Figure 2 The light emitted from LED 2 (represented by dashed lines) is relatively strong. This portion of the light has a small divergence angle and is collimated at the center by the transmission structure 13, resulting in a long transmission distance. Outside the preset angle, it is stray light. Figure 2 The light emitted from LED 2 (represented by solid lines) is relatively weak and is collimated by the combined action of total internal reflection structure 12 and projection structure 14. By setting a preset angle, the combined action of the main ray and stray light achieves uniform light output. Figure 5 The 100%, 90%, 70%, and 50% values also represent the light intensity of LED 2. Light with approximately 70% intensity is collimated by the transmission structure 13 before being output, while the remaining light enters the total internal reflection structure 12.
[0037] As an optional implementation, the cross-section of the transmission structure 13 is arc-shaped, that is... Figure 2 The small hemispherical structure (with a cross-sectional curvature less than 180 degrees of the corresponding curvature of a hemisphere) presents a quasi-parallel light emission from the LED lamp's main beam. The projection structure 14 is located around the transmission structure 13. The projection structure 14 can be flat or curved. A curved surface facilitates further collimation of the light output from the total internal reflection structure 12 as needed. Preferably, the projection structure 14 and the transmission structure 13 are an integrated structure.
[0038] As an optional implementation method, such as Figure 1 As shown, the lens body 1 is cylindrical, and a cylindrical first sidewall 16 is provided on the outer side of the total internal reflection structure 12. A diffused light region 15 is formed between the first sidewall 16 and the second sidewall 17 of the lens body 1. The diffused light region 15 receives the bottom stray light from the LED lamp as a light source. After repeated reflection between the first sidewall 16 and the second sidewall 17, the light is finally output. The diffused light region 15 can supplement the light between adjacent lenses and can compensate for the black band phenomenon caused by the too concentrated output light.
[0039] As an optional implementation, the inner wall of the light-receiving structure 11 and the transmission structure 13 form a refractive region. The inner wall of the light-receiving structure 11 is the starting segment of the light. The light rays from the inner wall exit from the lens body 1 into the air. Because the exit angle is large, total internal reflection occurs, so the light rays do not penetrate the inner wall but are refracted there. The transmission structure 13 also refracts as the light rays pass through. The refractive region selects a portion of the light rays for angle realignment, thereby adjusting the intensity of the light density and forming a fusion region that can merge adjacent light bands, making the final output light softer.
[0040] The embodiment is merely a specific example and does not indicate that this is the only way to implement the present invention.
[0041] Example 2:
[0042] An indirect lighting device, such as Figure 6 As shown, the system includes multiple lenses as described in Embodiment 1, and also includes a fixing groove 3. LED lights 2 are located within the lens body 1, preferably corresponding to the number of lenses. The lenses are fixedly connected to the fixing groove 3, which has an open structure capable of accommodating multiple lenses. These multiple lenses together form an indirect lighting system, facilitating rapid deployment. The fixing groove 3 can be straight or curved. Figure 6 The central groove is straight, and the fixing groove 3 is preferably made of a flexible material, which facilitates shape adjustment and adapts to different installation positions, making installation simpler. The indirect lighting system provided by this invention has a simplified design, is easy to install, and has lower deployment costs. Multiple lenses are evenly distributed within the fixing groove 3, making it easier to form a uniform area of light emission. When projected onto target locations such as walls and ceilings, the human body feels more comfortable.
[0043] As an optional implementation, the indirect lighting system also includes a PCBA board 4, which houses the driving circuitry for the LED lamp 2. The PCBA board 4 is located inside the fixing groove 3, specifically, preferably at the bottom of the fixing groove 3, and is fixedly connected to and electrically connected to the LED lamp. The PCBA board 4 is a flexible PCBA board. The flexible PCBA board facilitates matching with the curved fixing groove 3, thereby achieving the curved shape of the entire indirect lighting system.
[0044] Example 3:
[0045] This invention also provides a diffuse soft light indirect lighting system, including multiple indirect lighting devices as described in Embodiment Two. These devices form a single-row or multi-row structure; multiple rows allow for a more complex arrangement, facilitating adaptation to the indirect lighting needs of different scenarios. Adjacent indirect lighting devices within each row are fixedly connected, or detachably connected via interlocking, allowing the indirect lighting system to be set to the required length for better matching with the installation environment. This invention's diffuse soft light indirect lighting system is a combined design scheme. The point light sources of individual LED light sources are transformed into strip light sources through indirect lighting devices. These strip light sources can be fused using lens-based matrix combination technology, resulting in uniform illumination across the entire surface. The smaller, concentrated light sources are transformed into diffused forms with equivalent luminous flux according to the required illuminance for the application, achieving the same illuminance requirements. This transforms the light source into an indirect lighting system that is directly visible to the naked eye, eliminating glare and light reflection within the illuminated area, ensuring uniform light distribution throughout the space and truly bringing sunlight indoors. Furthermore, when combined with colored LED lights and video control technology, it can also simulate the sky or scenery as a background, benefiting people's eyes and physical and mental health.
[0046] The above description is merely a preferred embodiment of the present invention. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.
Claims
1. A lens, characterized in that, A lens body is used to adjust the output light pattern of an LED lamp. The lens body has a centrally symmetrical structure and includes a light-collecting structure, a total internal reflection structure, a transmission structure, and a projection structure. The light-collecting structure houses the LED lamp and constrains and guides the light output to the transmission and total internal reflection structures. The total internal reflection structure reflects and collimates stray light from the LED lamp outside a preset angle. The transmission structure outputs quasi-parallel light within the preset angle. The projection structure evenly distributes the light adjusted by the total internal reflection structure and shapes the light intensity. The outer side of the total internal reflection structure is provided with a cylindrical first sidewall, and an astigmatic region is formed between the first sidewall and the second sidewall of the lens body; the astigmatic region can supplement the light between adjacent lenses.
2. A lens according to claim 1, characterized in that, The light-collecting structure is a hollow column or frustum shape, with its sidewalls inclined or vertical, refracting the light from the LED lamp onto the surface of the total internal reflection structure through the inner wall.
3. A lens according to claim 1, characterized in that, The sidewalls of the total reflection structure are smooth surfaces or segmented curved surfaces.
4. A lens according to claim 1, characterized in that, The preset angle ranges from 20 to 40 degrees.
5. A lens according to claim 1, characterized in that, The cross-section of the transmission structure is arc-shaped, and the projection structure is located around the transmission structure. The projection structure is either a plane or a curved surface.
6. A lens according to claim 1, characterized in that, The inner wall of the light-collecting structure and the transmission structure form a refractive region.
7. An indirect lighting device, characterized in that, The lens includes one or more of the lenses described in any one of claims 1-6, and further includes a fixing groove; a plurality of the lenses are evenly distributed in the fixing groove; the LED light is located inside the lens body; the lens is fixedly connected to the fixing groove, and the fixing groove is capable of accommodating a plurality of the lenses; the fixing groove is straight or arc-shaped.
8. An indirect lighting device according to claim 7, characterized in that, The indirect lighting device also includes a PCBA board, which is located inside the fixing groove and electrically connected to the LED lamp. The PCBA board is a flexible PCBA board.
9. A diffuse soft light indirect lighting system, characterized in that, The invention includes an indirect lighting device as described in claims 7 or 8, wherein the indirect lighting devices are arranged in a single row or multiple rows, and adjacent indirect lighting devices in each row are fixedly connected.