LED spotlight lens structure and lamp
Patent Information
- Application Number
- CN202522020609.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-19
AI Technical Summary
对于全反射式透镜，其因耐温性差而不能应用于大功率的照明设备中，因凸透镜的材料一般为PC或者PMMA，一旦离光源设置较近就容易因凸透镜材料不耐高温的问题而导致受损；并且全反射式透镜的重量较重，全反射式透镜的中心部位因厚度较厚而对光效损失较大
[0013]本实用新型的有益效果是：本实用新型通过对现有的LED射灯透镜结构进行改进，在光源与控光件之间设置安装有硅胶透镜的凸透镜来替代全反射式透镜或反光杯；硅胶透镜由于其材质具有耐高温的特性能够有效提高整个透镜结构的耐热性，从而能够缩短透镜结构中光源与凸透镜之间的距离，能够应用于大功率的照明设备中；硅胶透镜的重量较轻，因此硅胶透镜与凸透镜结合的透镜结构的重量要显著低于全反射式透镜的重量；并且硅胶透镜具有良好的透光率，相较于反光杯能够有效提高控光精度和光斑的利用率。
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Figure CN224743363U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting equipment technology, and in particular to an LED spotlight lens structure and a lamp containing an LED spotlight lens structure. Background Technology
[0002] In LED spotlights, total internal reflection lenses or reflectors are commonly used to control the illumination distance and area. However, both total internal reflection lenses and reflectors have their own drawbacks. Total internal reflection lenses cannot be used in high-power lighting equipment due to their poor temperature resistance. Since convex lenses are typically made of PC or PMMA, they are easily damaged when placed close to the light source due to the material's inability to withstand high temperatures. Furthermore, total internal reflection lenses are relatively heavy, and their thicker central area results in significant light efficiency loss. Reflectors, on the other hand, have uncontrolled light at the center, leading to a larger light spot, lower light energy concentration, and poor light utilization. To achieve effective light control, reflectors are typically designed to be taller, resulting in more demanding assembly requirements. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an LED spotlight lens structure that can effectively improve temperature resistance and light control.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an LED spotlight lens structure, including a light source, a convex lens and a light control component arranged in sequence. The convex lens is disposed between the light source and the light control component. The side of the convex lens near the light source is the incident surface, and the side of the convex lens near the light control component is the exit surface. It also includes a silicone lens fixedly disposed on the convex lens, and the silicone lens is in contact with the incident surface of the convex lens.
[0005] As an improvement to the above solution: the silicone lens and the convex lens are detachably connected; the edge of the silicone lens is fixedly provided with a convex edge extending outward in a radial direction, and the edge of the convex lens is provided with a groove that fits into the convex edge.
[0006] As an improvement to the above solution: the light control element is a Fresnel lens, a floodlight lens, or a polarizing lens.
[0007] As an improvement to the above solution: the light control element is a Fresnel lens, the side of the Fresnel lens closer to the convex lens is the light-incident surface, and the side of the Fresnel lens farther from the convex lens is the light-exit surface; the light-incident surface of the Fresnel lens is a textured surface or a beaded microstructure surface, and the light-exit surface of the Fresnel lens is a Fresnel surface.
[0008] As an improvement to the above scheme: the incident surface of the Fresnel lens is a polygonal compound eye microstructure surface or a Fermat spiral compound eye microstructure surface.
[0009] As an improvement to the above solution: the incident surface of the convex lens is a curved surface or a plane, and the exit surface of the convex lens is a curved surface; the side of the silicone lens near the light source is a concave surface, and the side of the silicone lens near the convex lens is adapted to the incident surface of the convex lens.
[0010] As an improvement to the above solution: the concave curvature of the silicone lens near the light source is smaller than the curvature of the exit surface of the convex lens.
[0011] As an improvement to the above solution: the outer contours of the convex lens, the light control element, and the silicone lens are all circular, and the centers of the convex lens, the light control element, and the silicone lens are all located on the same axis.
[0012] This utility model also discloses a luminaire that includes the above-mentioned LED spotlight lens structure.
[0013] The beneficial effects of this utility model are as follows: This utility model improves the existing LED spotlight lens structure by installing a convex lens with a silicone lens between the light source and the light control component to replace the total reflection lens or reflector. Due to its high-temperature resistant properties, the silicone lens effectively improves the heat resistance of the entire lens structure, thereby shortening the distance between the light source and the convex lens in the lens structure, making it suitable for high-power lighting equipment. The silicone lens is also lightweight, so the weight of the lens structure combining the silicone lens and the convex lens is significantly lower than that of a total reflection lens. Furthermore, the silicone lens has good light transmittance, which effectively improves light control accuracy and light spot utilization compared to a reflector. Attached Figure Description
[0014] Figure 1 This is an isometric view of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the optical path of this utility model; Figure 4 A schematic diagram of the first embodiment of the incident surface of a Fresnel lens; Figure 5 A schematic diagram of a second embodiment of the incident surface of a Fresnel lens; Figure 6 This is a schematic diagram of a third embodiment of the incident surface of a Fresnel lens.
[0015] The markings in the diagram are: 100 - light source, 200 - convex lens, 300 - light control element, 400 - silicone lens, 500 - light ray. Detailed Implementation
[0016] To facilitate understanding of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.
[0017] In the description of this utility model, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0018] like Figures 1 to 3 As shown, the LED spotlight lens structure disclosed in this utility model consists of a light source 100, a convex lens 200, a light control element 300, and a silicone lens 400. The light source 100, silicone lens 400, convex lens 200, and light control element 300 are arranged sequentially, and the silicone lens 400 is fixedly mounted on the convex lens 200. The outer contours of the convex lens 200, light control element 300, and silicone lens 400 are all circular, and the centers of the circles of the convex lens 200, light control element 300, and silicone lens 400 are all located on the same axis. To address the problems of poor heat resistance and heavy weight associated with existing lens structures using total internal reflection lenses, and the difficulties in light control and large light spots associated with transparent structures using reflectors, this invention employs a convex lens 200 with a silicone lens 400 installed between the light source 100 and the light control component 300. The silicone lens 400 is a lens structure made of silicone material. The silicone lens 400 is fixed to the convex lens 200 to form the lens structure. Due to the good high-temperature resistance of silicone, the silicone lens 400 is fixed to the incident surface of the convex lens 200, ensuring close contact between the silicone lens 400 and the incident surface of the convex lens 200. The silicone lens 400 is located between the light source 100 and the convex lens 200. The silicone lens 400 directly receives the light 500 emitted by the light source 100 and the dissipated heat, thus achieving a heat insulation effect and improving the heat resistance of the entire lens structure. This allows the light source 100 to be placed close to the silicone lens 400 for use in high-power lighting equipment. In addition, the silicone lens 400 is lightweight and has good light transmittance, which can reduce the weight of the entire lens structure while ensuring the transmission of light 500. It avoids significant loss of light efficiency due to the thickness of the lens in the middle, and improves the light control effect and the effective utilization of the light spot.
[0019] Specifically, in this invention, the connection between the silicone lens 400 and the convex lens 200 is designed to be detachable. Considering the difficulty of disassembly and assembly and to avoid damaging the structures of both the silicone lens 400 and the convex lens 200, this invention uses an inlay method to mount the silicone lens 400 onto the convex lens 200. For example... Figure 2 and Figure 3As shown, this invention features a radially outwardly extending convex edge fixedly provided on the edge of the silicone lens 400, and a groove forming a fitting fit with the convex edge on the edge of the convex lens 200. Due to the good elasticity of silicone, the silicone lens 400 can be deformed by squeezing during installation. Then, the silicone lens 400 and the convex lens 200 are attached, and the convex edge of the silicone lens 400 is embedded into the groove of the convex lens 200 during the recovery process, thus quickly completing the mounting and fixing of the silicone lens 400 on the convex lens 200. Furthermore, the good elastic deformation properties of the silicone lens 400 allow it to fit tightly against the incident surface of the convex lens 200. Alternatively, the connection can be achieved by directly molding the silicone lens 400 onto the convex lens 200. By injecting a certain amount of flowing silicone into the groove of the convex lens 200 and allowing the flowing silicone to solidify into a silicone lens 400, the silicone lens 400 can be directly molded onto the convex lens 200.
[0020] The light control element 300 used in this invention can be selected as a Fresnel lens, floodlight lens, or polarizing lens depending on the light control angle or the required light spot. As a preferred embodiment, the light control element 300 in this invention is a Fresnel lens. The side of the Fresnel lens closest to the convex lens 200 is the incident light surface, and the side of the Fresnel lens furthest from the convex lens 200 is the emitting light surface. The incident light surface of the Fresnel lens is a textured surface or a beaded microstructure surface, and the emitting light surface of the Fresnel lens is a Fresnel surface. A beaded microstructure or textured structure is provided on the incident light surface of the Fresnel lens to form a beaded microstructure surface or a textured surface. Fresnel teeth are provided on the emitting light surface of the Fresnel lens, formed by multiple concentric ring structures on the emitting light surface of the Fresnel lens. The grooves between each concentric ring structure can each serve as an independent lens. Fresnel lenses, through the Fresnel teeth on the light-emitting surface, can concentrate light into one point, forming a central focal point, adjusting the light into parallel light or focused light, and achieving precise light output control of 500°.
[0021] For specific implementations of Fresnel lenses, there are various structures for both the incident and exit surfaces. For example, when the incident surface of a Fresnel lens is textured, it can be formed by etching or frosting to create a textured plane, i.e., an etched textured surface or a frosted textured surface. Alternatively, different compound eye dots can be set on the incident surface of the Fresnel lens to form a bead-like microstructure surface; such as... Figure 4 As shown, the incident surface of a Fresnel lens has multiple hexagonal compound eye points arranged in an array, such as... Figure 5 As shown, the incident surface of a Fresnel lens has four hexagonal compound eye dots arranged in an array. Other polygonal compound eye dots arranged in an array can also be used to form a polygonal compound eye microstructure surface; such as... Figure 6As shown, multiple Fermat spiral structures can also be set on the light-incident surface of the Fresnel lens to form the Fermat spiral compound eye microstructure surface.
[0022] Specifically, such as Figure 2 and Figure 3 As shown, in this invention, the incident surface of the convex lens 200 can be selectively set as a curved surface or a flat surface, and the exit surface of the convex lens 200 is a curved surface. The side of the silicone lens 400 near the light source 100 is concave to achieve a good focusing effect on the light ray 500 emitted from the light source 100, control the angle of the light ray 500 scattered by the light source 100, and reduce the scattering angle of the scattered light ray 500; the side of the silicone lens 400 near the convex lens 200 is adapted to fit the incident surface of the convex lens 200 so that the silicone lens 400 and the convex lens 200 fit tightly without gaps affecting the light transmission effect. The curvature of the concave surface of the silicone lens 400 near the light source 100 is smaller than the curvature of the exit surface of the convex lens 200.
[0023] like Figure 3 As shown, light source 100 emits light 500 with an initial emission angle of 120°. The scattered light 500 enters a lens structure composed of silicone lens 400 and convex lens 200. After the initial light control by silicone lens 400 and convex lens 200, the angle of light 500 is reduced to 60-80°, and then it is emitted to Fresnel lens 300, which acts as a light control element. Fresnel lens performs secondary light control on light 500, and finally achieves precise angle and spot control through Fresnel lens.
[0024] This utility model also discloses a luminaire that includes the above-mentioned LED spotlight lens structure.
Claims
1. An LED spotlight lens structure, comprising a light source (100), a convex lens (200), and a light control element (300) arranged sequentially, wherein the convex lens (200) is disposed between the light source (100) and the light control element (300), the side of the convex lens (200) near the light source (100) is the incident surface, and the side of the convex lens (200) near the light control element (300) is the exit surface, characterized in that: It also includes a silicone lens (400) fixedly mounted on the convex lens (200), with the silicone lens (400) in contact with the incident surface of the convex lens (200).
2. The LED spotlight lens structure as described in claim 1, characterized in that: The silicone lens (400) and the convex lens (200) are detachably connected; the edge of the silicone lens (400) is fixedly provided with a convex edge extending outward in a radial direction, and the edge of the convex lens (200) is provided with a groove that fits into the convex edge.
3. The LED spotlight lens structure as described in claim 1, characterized in that: The light control element (300) is a Fresnel lens, a floodlight lens, or a polarizing lens.
4. The LED spotlight lens structure as described in claim 3, characterized in that: The light control element (300) is a Fresnel lens. The side of the Fresnel lens closer to the convex lens (200) is the light-incident surface, and the side of the Fresnel lens farther from the convex lens (200) is the light-exit surface. The light-incident surface of the Fresnel lens is a textured surface or a beaded microstructure surface, and the light-exit surface of the Fresnel lens is a Fresnel surface.
5. The LED spotlight lens structure as described in claim 4, characterized in that: The incident surface of the Fresnel lens is a polygonal compound eye microstructure surface or a Fermat spiral compound eye microstructure surface.
6. The LED spotlight lens structure as described in claim 1, characterized in that: The incident surface of the convex lens (200) is a curved surface or a plane, and the exit surface of the convex lens (200) is a curved surface; the side of the silicone lens (400) near the light source (100) is a concave surface, and the side of the silicone lens (400) near the convex lens (200) is adapted to the incident surface of the convex lens (200).
7. The LED spotlight lens structure as described in claim 6, characterized in that: The concave curvature of the side of the silicone lens (400) closest to the light source (100) is smaller than the curvature of the exit surface of the convex lens (200).
8. The LED spotlight lens structure as described in claim 1, characterized in that: The outer contours of the convex lens (200), the light control element (300), and the silicone lens (400) are all circular, and the centers of the convex lens (200), the light control element (300), and the silicone lens (400) are all located on the same axis.
9. A lamp, characterized in that: The luminaire includes the LED spotlight lens structure as described in any one of claims 1 to 8.