Lens with weight loss and heat dissipation functions
Patent Information
- Application Number
- CN202522086634.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-09-28
AI Technical Summary
由于透镜底部为平面需要通过胶水固定在基板上，这样光源发热的时候，底部为平面与基板间散热空间不足，温度的上升会导致透镜与胶水分离，从而出现脱落的现象
[0014]综上所述，根据本实用新型一实施例通过第二折射面的斜面设计减轻了透镜重量约15％，并增加光源件的散热空间，降低热脱胶风险。具有第一折射面、第二折射面的透镜，在解决堆叠光源件的问题时可提升光效且避免导致均匀性降低。此外，透过第一曲线段、第二曲线段及折射面的协同作用改善光线均匀度，使面灯光输出均匀度显着提高。另外，光源件的大角度光线经二次全反射后被有效利用，提高整体出光效率。再者，多个透镜可符合多条光源排列应用，光线混合效果佳。
Smart Images
Figure CN224920237U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to lenses, and more particularly to a lens with weight reduction and heat dissipation functions. Background Technology
[0002] LED panel lights, as indoor lighting fixtures, are characterized by their large luminous surface and soft light. With the development of LED technology and increasing emphasis on energy conservation and emission reduction, panel lights also face the need to improve luminous efficiency. Commonly used panel lights on the market can be divided into side-lit and direct-lit types based on their optical design. Direct-lit panel lights typically use lenses to perform secondary light distribution on the light source, resulting in a uniform light emission effect. Because the bottom of the lens is flat and needs to be fixed to the substrate with adhesive, insufficient heat dissipation space between the flat bottom and the substrate when the light source heats up can cause the lens to separate from the adhesive, leading to detachment. Utility Model Content
[0003] In view of the above problems, a lens with weight reduction and heat dissipation functions is proposed.
[0004] One embodiment of this utility model provides a lens suitable for placement on a light source. The lens includes a main body, an incident cavity, a first refractive surface, and a second refractive surface. The first refractive surface is located on one side of the main body. The incident cavity is recessed from the other side of the main body toward the first side. The second refractive surface is annularly disposed on the other side of the main body and surrounds the opening of the incident cavity. The light source is located at the opening. The second refractive surface forms an angle with the light-emitting surface of the light source.
[0005] According to one preferred embodiment described above, the other side of the main body has a material removal area, and after the area of the material removal area is removed, a second refracting surface with an inclination is formed.
[0006] According to one preferred embodiment described above, the lens includes a plurality of contact blocks arranged in a ring on the second refractive surface.
[0007] According to the preferred embodiment described above, the opening of the incident cavity has a center point, which corresponds to the light-emitting point of the light-emitting surface of the light source. The outer side to the inner side of the second refractive surface is an inclined surface, and the inner side of the second refractive surface protrudes outward from the other side of the main body and connects to the opening.
[0008] According to one preferred embodiment described above, the included angle is 0 degrees to 20 degrees.
[0009] According to one preferred embodiment described above, the included angle is 12.5 degrees.
[0010] According to one preferred embodiment described above, the lens includes a plurality of microstructures arranged in a ring on the second refractive surface.
[0011] According to the preferred embodiment described above, the incident cavity has a first curved segment and a second curved segment, the first curved segment having a 35-degree angle with the light-emitting surface of the light source, and the second curved segment having a 55-degree angle with the vertical line of the light source.
[0012] According to one preferred embodiment described above, one side of the main body has a recessed portion corresponding to the upper part of the light source.
[0013] According to the preferred embodiment described above, the first refractive surface is a spline curve. When the first refractive surface forms a 35-degree angle with the perpendicular bisector of the light-emitting surface of the light source, the curvature of the curve gradually decreases. When the angle formed between the first refractive surface and the perpendicular bisector of the light-emitting surface of the light source is greater than 35 degrees, the curvature of the curve gradually increases.
[0014] In summary, according to one embodiment of this utility model, the inclined design of the second refractive surface reduces the lens weight by approximately 15% and increases the heat dissipation space of the light source, reducing the risk of thermal delamination. The lens, with its first and second refractive surfaces, improves luminous efficiency and avoids reduced uniformity while addressing the issue of stacked light sources. Furthermore, the synergistic effect of the first curved segment, the second curved segment, and the refractive surface improves light uniformity, significantly enhancing the uniformity of surface light output. Additionally, the large-angle light from the light source is effectively utilized after secondary total internal reflection, improving overall light extraction efficiency. Moreover, multiple lenses can be used in applications with multiple light source arrangements, resulting in excellent light mixing. Attached Figure Description
[0015] Figure 1 This is a front view diagram of an embodiment of the lens of this utility model.
[0016] Figure 2 This is a schematic diagram of the rear view of an embodiment of the lens of this utility model.
[0017] Figure 3 This is a bottom view schematic diagram of an embodiment of the lens of this utility model.
[0018] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the lens of this utility model.
[0019] Figure 5 This is a side view schematic diagram showing the material removal area of an embodiment of the lens of this utility model.
[0020] Figure 6 This is a cross-sectional schematic diagram of the mounting light source plate of one embodiment of the lens of this utility model.
[0021] Figure 7 This is a schematic diagram of the light effect of an embodiment where the second refractive surface of the lens of this utility model is 0 degrees.
[0022] Figure 8 This is a schematic diagram of the light effect of an embodiment where the second refractive surface of the lens of this utility model is 10 degrees.
[0023] Figure 9 This is a schematic diagram of the light effect of an embodiment where the second refractive surface of the lens of this utility model is 15 degrees.
[0024] Figure 10 This is a schematic diagram of the light effect of an embodiment where the second refractive surface of the lens of this utility model is 12.5 degrees.
[0025] Figure 11 This is a schematic diagram of the light effect of an embodiment where the second refractive surface of the lens of this utility model is 18 degrees.
[0026] Figure 12 This is a schematic diagram of the light effect of the lens of this utility model applied to four light source plates.
[0027] Figure 13 This is a schematic diagram of the light effect of the lens of this utility model applied to a six-light source plate embodiment.
[0028] Figure 14 This is a schematic diagram of the light effect of the lens of this utility model applied to a seven-light source plate embodiment.
[0029] Explanation of reference numerals in the attached figures:
[0030] Lens 100, light source 200, light-emitting point 201, light-emitting surface 202, panel light 300, light source plate 400, main body 1, recessed part 11, incident cavity 2, opening 20, first curved segment 21, second curved segment 22, first refractive surface 3, second refractive surface 4, microstructure 5, contact block 6, material removal area 7, vertical line P.
[0031] The following detailed description of the features and advantages of this utility model in the embodiments is sufficient to enable anyone skilled in the art to understand the technical content of this utility model and implement it accordingly. Furthermore, based on the content disclosed in this specification, the claims, and the drawings, anyone skilled in the art can easily understand the purpose and advantages of this creation. Detailed Implementation
[0032] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.
[0033] Please refer to Figures 1 to 3 , Figure 1 This is a front view diagram of an embodiment of the lens 100 of this utility model. Figure 2 This is a schematic diagram of the rear view of an embodiment of the lens 100 of this utility model. Figure 3 This is a bottom view schematic diagram of an embodiment of the lens 100 of this utility model. The lens 100 is placed on a light source 200, which includes a light-emitting point 201 and a light-emitting surface 202, serving as the source of light emission. The lens 100 is a transparent circular structure, comprising a main body 1, an incident cavity 2, a first refractive surface 3, and a second refractive surface 4. The first refractive surface 3 is located on one side of the main body 1. The incident cavity 2 is recessed from the other side of the main body 1 towards one side, and has an opening 20, the center of which corresponds to the light-emitting point 201 of the light source 200. The second refractive surface 4 is arranged in a ring on the other side of the main body 1 and surrounds the opening 20 of the incident cavity 2.
[0034] The main body 1 is the overall structure of the lens 100, with one side forming a curved first refractive surface 3 facing outward, and the other side being recessed towards the light source 200 to form a recessed portion 11. An incident cavity 2 is provided in the center of the recessed portion 11 to receive the light emitted by the light-emitting point 201 of the light source 200.
[0035] The lens 100 is made of a transparent optical material and includes a microstructure 5 disposed on the second refractive surface 4. When the lens 100 is installed, the light source 200 is located directly below the opening 20 of the incident cavity 2.
[0036] Viewed in cross-section, the incident cavity 2 consists of two curved segments. The first curved segment 21 forms a 35-degree angle with the emitting surface 202 of the light source 200, and its curvature remains essentially constant, serving to guide small-angle light rays (such as...). Figure 4 (As shown); the second curve segment 22 forms a 55-degree angle with the perpendicular bisector P of the light source component 200, and the curvature gradually increases from the end closer to the light source, in order to effectively control the entry path of large-angle light.
[0037] Please refer to Figures 1 to 4 , Figure 4 This is a cross-sectional schematic diagram of an embodiment of the lens 100 of this utility model. The first refractive surface 3 is located on the other side of the main body 1, and the first refractive surface 3 has a spline curve structure. Within a range of 35 degrees forming an angle with the perpendicular bisector P of the light-emitting surface 202 of the light source 200, its curvature gradually decreases; when the angle is greater than 35 degrees, the curvature gradually increases. This surface can further refract the light emitted from the incident cavity 2, thereby achieving light diffusion.
[0038] The second refractive surface 4 is arranged in a ring on the other side of the main body 1, surrounding the periphery of the opening 20 of the incident cavity 2. The inner side of the second refractive surface 4 protrudes outward and forms a slope, gradually transitioning from the outer side to the inner side of the second refractive surface 4 to the opening 20. The second refractive surface 4 forms an angle R with the light-emitting surface 202 of the light source 200, ranging from 0 to 20 degrees, with an optimal design of 12.5 degrees.
[0039] The surface of the second refractive surface 4 is provided with multiple microstructures 5 arranged in a ring to adjust the direction and diffusion effect of light and improve the uniformity of light mixing.
[0040] When lens 100 is mounted on light source 200, the light-emitting point 201 of light source 200 is aligned with the center point of incident cavity 2, and the opening 20 is closely aligned with the light-emitting surface 202. During light transmission, when light source 200 is lit, small-angle light rays pass directly through incident cavity 2, are refracted by first refractive surface 3, and then emitted outward; large-angle light rays enter incident cavity 2, are totally reflected by second refractive surface 4, and then change direction after reflection, and are refracted out by first refractive surface 3; the interface reflection light that may be generated by first refractive surface 3 will be completely reflected back by second refractive surface 4, and the light will be further utilized.
[0041] Please refer to Figure 5 , Figure 5 This is a side view schematic diagram showing the material removal area 7 of an embodiment of the lens of this utility model. The other side of the main body 1 has the material removal area 7, which forms a second refractive surface 4 with an angle after the area of the material removal area 7 is removed. In other words, when the material removal area 7 of the main body 1 is not removed (e.g....), Figure 5 The second refractive surface 4 (in the diagonal area of the midpoint chain line) is flat, and the main body 1 is relatively thick and heavy. After the area of the material removal area 7 is removed, the second refractive surface 4 becomes a slope, which helps to reduce the weight of the lens (from about 0.7g to about 0.607g), thereby reducing material costs.
[0042] Please refer to Figure 6 , Figure 6 This is a cross-sectional schematic diagram of an embodiment of the lens of this utility model, showing the mounting of a light source plate 400. The lens 100 includes multiple contact blocks 6, which are arranged in a ring at equal intervals on the second refractive surface 4, for example, in the form of three (or other integers such as four). When the lens 100 is mounted on the light source plate 400, the three contact blocks 6 contact the light source plate 400, avoiding the risk of yellowing of the lens 100 due to heat conduction from the light source plate 400. The slope of the second refractive surface 4 is adjusted to increase the contact area between the light source plate 400 and the air, thereby improving the heat dissipation effect.
[0043] Please refer to Figure 7 , Figure 7 This is a schematic diagram of the light effect of an embodiment where the second refractive surface 4 of the lens 100 of this utility model is 0 degrees. The diagram shows the contrast between colored and gray presentations, demonstrating the uniformity simulation effect. When the second refractive surface 4 has a slope of 0 degrees, the uniformity is 0.78.
[0044] Please refer to Figure 8 , Figure 8This is a schematic diagram of the light effect of the second refractive surface 4 of the lens 100 of this utility model with a 10-degree slope. The diagram shows the contrast between the colored and gray versions, demonstrating the uniformity simulation effect. When the second refractive surface 4 has a 10-degree slope, the uniformity is 0.75.
[0045] Please refer to Figure 9 , Figure 9 This is a schematic diagram of the light effect of an embodiment where the second refractive surface 4 of the lens 100 of this utility model is at a 15-degree angle. The diagram shows the contrast between colored and gray areas, demonstrating the uniformity simulation effect. When the second refractive surface 4 has a 15-degree angle, the uniformity is 0.77.
[0046] Please refer to Figure 10 , Figure 10 This is a schematic diagram of the light effect of an embodiment where the second refractive surface 4 of the lens 100 of this utility model has a slope of 12.5 degrees. The diagram shows a comparison of colored and gray areas, illustrating the uniformity simulation effect. When the second refractive surface 4 has a slope of 12.5 degrees, the uniformity is 0.85. Therefore, the uniformity of the second refractive surface 4 at 12.5 degrees is the optimal choice.
[0047] Please refer to Figure 11 , Figure 11 This is a schematic diagram of the light effect of an embodiment where the second refractive surface 4 of the lens 100 of this utility model has an 18-degree inclination. The diagram shows a comparison of colored and gray areas, illustrating the uniformity simulation effect. When the second refractive surface 4 has an 18-degree inclination, the uniformity is 0.65. The above demonstrates the influence of different inclinations of the second refractive surface 4 on the uniformity of the light effect.
[0048] Please refer to Figure 12 , Figure 12 This is a schematic diagram illustrating the light effect of the lens 100 of this utility model applied to four light source boards, showing a contrast between colored and gray presentations. Four light source boards are arranged equidistantly on the panel light 300, each light source board having multiple light source elements 200, and each light source element 200 is mounted on the lens 100. When the multiple light source elements 200 of the four light source boards are mounted on the lens 100, the uniformity is 0.82.
[0049] Please refer to Figure 13 , Figure 13 This is a schematic diagram illustrating the light effect of the lens 100 of this utility model applied to an embodiment of six light source boards, showing a contrast between colored and gray presentations. Six light source boards are arranged equidistantly on the panel light 300, each light source board having multiple light source elements 200, and each light source element 200 is mounted on the lens 100. When the multiple light source elements 200 of the six light source boards are mounted on the lens 100, the uniformity is 0.84.
[0050] Please refer to Figure 14 , Figure 14This is a schematic diagram illustrating the light effect of the lens 100 applied to a seven-light-source-board embodiment, showing a contrast between colored and gray presentations. Seven light-source boards are equidistantly arranged on the panel light 300, each with multiple light source elements 200, and each light source element 200 is mounted on the lens 100. When the multiple light source elements 200 of the seven light-source boards are mounted on the lens 100, the uniformity is 0.88. This structure allows the output light uniformity to reach above 0.8 when multiple light-source boards are combined, significantly improving light utilization.
[0051] In summary, according to one embodiment of this utility model, the inclined design of the second refractive surface reduces the lens weight by approximately 15% and increases the heat dissipation space of the light source, reducing the risk of thermal delamination. The lens, with its first and second refractive surfaces, improves luminous efficiency and avoids reduced uniformity while addressing the issue of stacked light sources. Furthermore, the synergistic effect of the first curved segment, the second curved segment, and the refractive surface improves light uniformity, significantly enhancing the uniformity of surface light output. Additionally, the large-angle light from the light source is effectively utilized after secondary total internal reflection, improving overall light extraction efficiency. Moreover, multiple lenses can be used in applications with multiple light source arrangements, resulting in excellent light mixing.
[0052] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.
Claims
1. A lens with weight reduction and heat dissipation functions, suitable for placement on a light source, the lens comprising a body, an incident cavity, a first refractive surface, and a second refractive surface, the first refractive surface being located on one side of the body, the incident cavity being recessed from the other side of the body toward the first side, the second refractive surface being annularly disposed on the other side of the body and surrounding the opening of the incident cavity, the light source being located at the opening, and the second refractive surface forming an angle with the light-emitting surface of the light source.
2. The lens with weight reduction and heat dissipation functions according to claim 1, characterized in that: The other side of the main body has a material removal area, which forms a second refracting surface with an angle after the area of the material removal area is removed.
3. The lens with weight reduction and heat dissipation functions according to claim 2, characterized in that: The lens includes multiple contact blocks arranged in a ring on the second refractive surface.
4. The lens with weight reduction and heat dissipation functions according to claim 1, characterized in that: The opening of the incident cavity has a center point, which corresponds to the light-emitting point of the light-emitting surface of the light source. The outer side to the inner side of the second refractive surface is an inclined surface, and the inner side of the second refractive surface protrudes outward from the other side of the main body and connects to the opening.
5. The lens with weight reduction and heat dissipation functions according to claim 1, characterized in that: The included angle is between 0 and 20 degrees.
6. The lens with weight reduction and heat dissipation functions according to claim 5, characterized in that: The included angle is 12.5 degrees.
7. The lens with weight reduction and heat dissipation functions according to claim 1, characterized in that: The lens comprises multiple microstructures arranged in a ring on the second refractive surface.
8. The lens with weight reduction and heat dissipation functions according to claim 1, characterized in that: The incident cavity has a first curved segment and a second curved segment. The first curved segment has a 35-degree angle with the light-emitting surface of the light source, and the second curved segment has a 55-degree angle with the vertical line of the light source.
9. The lens with weight reduction and heat dissipation functions according to claim 1, characterized in that: One side of the main body has a recessed portion, corresponding to the upper part of the light source.
10. The lens with weight reduction and heat dissipation functions according to claim 1, characterized in that: The first refractive surface is a spline curve. When the first refractive surface forms a 35-degree angle with the perpendicular bisector of the light-emitting surface of the light source, the curvature of the curve gradually decreases. When the angle formed between the first refractive surface and the perpendicular bisector of the light-emitting surface of the light source is greater than 35 degrees, the curvature of the curve gradually increases.