Dual-color LED freeform lens and wide-angle camera lighting system
Patent Information
- Application Number
- CN202522250695.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-10-24
AI Technical Summary
[0014]本实用新型与现有技术相比的有益效果是：一种双色LED自由曲面透镜，包括一透镜本体，透镜本体的底部开设有一凹槽，凹槽的槽底构成透镜本体的入光面，透镜本体的顶部构成透镜本体的出光面，以使得入光面和出光面呈相对布置关系，双色LED均设于凹槽，且双色LED的发光方向朝向入光面。利用设置的一个凹槽作为安装双色LED的容量空间，避免了现有技术中透镜之间有间隙的问题，从而增大了出光面积，降低了白光的刺眼程度。
Smart Images
Figure CN224651592U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of camera lighting technology, and in particular to a dual-color LED freeform surface lens and a wide-angle camera lighting system. Background Technology
[0002] Currently, wide-angle cameras commonly use red and white dual-color LED lenses, such as... Figure 1 As shown, this type of lens has gaps between them. After the light source is shaped by the lens, the emitting area is small, and the white light will be quite dazzling. Figure 2 As shown, the light emission distribution has a noticeable grainy texture with gaps in the middle, resulting in a relatively small light emission area and high brightness at a single point, which affects the light emission effect. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dual-color LED freeform surface lens and wide-angle camera lighting system, which aims to reduce the glare of white light in the lighting system.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: On one hand, this utility model provides a dual-color LED freeform surface lens, including a lens body, a groove is formed at the bottom of the lens body, the bottom of the groove forms the light-incident surface of the lens body, and the top of the lens body forms the light-exit surface of the lens body, so that the light-incident surface and the light-exit surface are arranged in a relative relationship. The dual-color LEDs are all disposed in the groove, and the light-emitting direction of the dual-color LEDs is towards the light-incident surface.
[0005] Furthermore, the light-incident surface is provided with a plurality of first transparent protrusions arranged in a row.
[0006] Furthermore, the first transparent protrusion protrudes in a direction away from the light-incident surface.
[0007] Furthermore, the light-emitting surface is provided with a plurality of second transparent protrusions arranged in a row.
[0008] Furthermore, the first transparent protrusion protrudes in a direction away from the light-emitting surface.
[0009] Furthermore, both the first transparent protrusion and the second transparent protrusion are spherical structures.
[0010] Furthermore, the outer surface of the lens body is provided with several facets, and the ridge line between two adjacent facets extends along the height direction of the lens body.
[0011] Furthermore, the area of the light-emitting surface is larger than the area of the light-incident surface.
[0012] Furthermore, the lens body is made entirely of transparent material and is integrally injection molded.
[0013] On the other hand, this utility model provides a wide-angle camera lighting system, including a red LED light source, a white LED light source, and the aforementioned dual-color LED freeform lens, wherein the red LED light source and the white LED light source are disposed in the groove.
[0014] The advantages of this utility model compared to the prior art are as follows: A dual-color LED freeform surface lens includes a lens body with a groove at the bottom. The bottom of the groove forms the light-incident surface of the lens body, and the top of the lens body forms the light-exit surface, so that the light-incident and light-exit surfaces are arranged in a relative relationship. Dual-color LEDs are all disposed in the groove, and the light-emitting direction of the dual-color LEDs faces the light-incident surface. Utilizing a single groove as a space for mounting the dual-color LEDs avoids the problem of gaps between lenses in the prior art, thereby increasing the light-exit area and reducing the glare of white light.
[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objectives, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of a lens in the prior art.
[0018] Figure 2 This is a diagram illustrating the light spot distribution effect of a lens in existing technology.
[0019] Figure 3 This is a schematic diagram of the structure of a dual-color LED freeform surface lens provided for a specific embodiment of the present utility model.
[0020] Figure 4 This is a structural schematic diagram of a dual-color LED freeform surface lens from another perspective, provided as a specific embodiment of the present invention.
[0021] Figure 5 This is a diagram illustrating the light spot distribution effect of a dual-color LED freeform surface lens, provided as a specific embodiment of the present invention.
[0022] Figure 6 A simulation diagram of a white light source provided for a specific embodiment of this utility model.
[0023] Figure 7 A simulation diagram of a red light source provided for a specific embodiment of this utility model.
[0024] Figure Labels 1. Lens body; 11. Light-emitting surface; 111. Second transparent protrusion; 12. Prism facet; 121. Prism line; 13. Groove; 131. Light-incident surface. Detailed Implementation
[0025] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0031] like Figures 3 to 7 As shown, this utility model embodiment provides a dual-color LED freeform surface lens, including a lens body 1. A groove 13 is formed at the bottom of the lens body 1. The bottom of the groove 13 forms the light-incident surface 131 of the lens body 1, and the top of the lens body 1 forms the light-exit surface 11 of the lens body 1, so that the light-incident surface 131 and the light-exit surface 11 are arranged in a relative relationship. Dual-color LEDs are all disposed in the groove 13, and the light-emitting direction of the dual-color LEDs is towards the light-incident surface 131.
[0032] The lens body 1 is integrally injection molded and made of transparent material, such as polymethyl methacrylate (PMMA), polycarbonate (PC) or optical glass, which has good light transmittance and can reduce light loss inside the lens.
[0033] A groove 13 is formed at the bottom of the lens body 1. The shape of the groove 13 can be elliptical, square, or polygonal. Its depth is designed according to the emission angle of the dual-color LED, and is usually 1 / 3 to 1 / 2 of the total height of the lens body 1 to ensure that the light from the dual-color LED can be concentrated and incident on the light-incident surface 131. The bottom of the groove 13 forms the light-incident surface 131 of the lens body 1, and the top of the lens body 1 forms the light-emitting surface 11. The light-incident surface 131 and the light-emitting surface 11 are arranged opposite to each other, that is, the light-incident surface 131 faces the bottom side of the lens body 1, and the light-emitting surface 11 faces the top side of the lens body 1.
[0034] In this embodiment, a dual-color LED refers to a combination of a red LED and a white LED. In use, the dual-color LED (such as a combination of a red LED and a white LED) is fixed in the groove 13 with its light emission direction facing the light-incident surface 131, so that the light enters the lens body 1 through the light-incident surface 131, and after refraction and reflection by the lens body 1, it is emitted from the light-exiting surface 11.
[0035] The inner wall of the groove 13 can be an inclined surface or a vertical surface.
[0036] By using a recess 13 as a capacity space for installing dual-color LEDs, the problem of gaps between lenses in the prior art is avoided. The integrated structure of the lens body 1 avoids light loss caused by the assembly of multiple parts, thereby increasing the light-emitting surface area 11 and reducing the glare of white light.
[0037] In some embodiments, such as Figure 4 As shown, the light-incident surface 131 is provided with a plurality of first transparent protrusions arranged in a row. The first transparent protrusions are integral with the lens body 1 and are made of the same material as the lens body 1.
[0038] The arrangement of the first transparent protrusions can be array-like (such as rectangular array or circular array) or irregular, depending on the distribution of the light-emitting area of the dual-color LED. For example, when the dual-color LED is two adjacent point light sources, the first transparent protrusions can be densely distributed along the light-emitting path of the corresponding light source and sparsely distributed in the edge area.
[0039] The first transparent protrusion protrudes in a direction away from the light-incident surface 131 (i.e. towards the inside of the groove 13), and its shape can be hemispherical, conical, or polyhedral.
[0040] The first transparent protrusion can initially refract and diffuse the incident light, breaking the direct path of the light, reducing the brightness of a single point, and reducing the glare of white light. At the same time, the protrusion structure increases the surface area of the light-incident surface 131, thereby improving the uniformity of the incident light.
[0041] In some embodiments, such as Figure 3As shown, the light-emitting surface 11 is provided with a plurality of second transparent protrusions 111 arranged in a row. The second transparent protrusions 111 are integral with the lens body 1, and their arrangement may be the same as or different from that of the first transparent protrusions. For example, when the light-incident surface 131 adopts a rectangular array, the light-emitting surface 11 may adopt a circular array to achieve multi-angle mixing of light.
[0042] The second transparent protrusion 111 protrudes in a direction away from the light-emitting surface 11 (i.e. towards the outside of the lens body 1), and its shape may match or differ from that of the first transparent protrusion.
[0043] The second transparent protrusion 111 can diffuse the light transmitted inside the lens, making the light emitted from the light-emitting surface 11 at a wider angle and with a more uniform distribution. At the same time, it reduces the brightness of a single point and the glare of white light. Moreover, the protrusion structure increases the surface area of the light-emitting surface 11, thereby improving the uniformity of light emission.
[0044] It should be noted that by setting a first transparent protrusion on the light-incident surface 131 and a second light-transmitting protrusion on the light-exiting surface 11, the two interact to further reduce the brightness of a single point, reduce the glare of white light, and improve the uniformity of light output.
[0045] In some embodiments, such as Figure 4 As shown, the outer surface of the lens body 1 is provided with a plurality of facets 12, and the ridge line 121 between two adjacent facets 12 extends along the height direction of the lens body 1 (i.e., the direction perpendicular to the light incident surface 131 to the light exit surface 11). In this way, the facets 12 can cut the light into multiple small pieces, which are then superimposed, thereby improving the uniformity of the emitted light.
[0046] In some embodiments, the area of the light-emitting surface 11 is larger than the area of the light-incident surface 131. In this way, with the inner sidewall of the groove 13 being an inclined surface, the light is diffused to achieve a wide-angle light emission effect. At the same time, the gradient structure formed by the area difference helps the light to be transmitted evenly inside the lens, reducing local brightness differences.
[0047] This utility model embodiment provides a wide-angle camera lighting system, including a red LED light source, a white LED light source, and the aforementioned dual-color LED freeform lens, with the red LED light source and the white LED light source disposed in the groove 13.
[0048] like Figures 5 to 7 As shown, from Figure 5 It can be seen that the grainy phenomenon in the emitted light distribution is significantly improved compared to existing technologies. Figure 2 The situation has improved, with no obvious gaps in the middle, and the corresponding light-emitting surface area has increased, but the brightness of a single point will be relatively reduced. From Figure 6 and Figure 7It can be seen that the light spots emitted by both red and white LED light sources are relatively uniform, and the light distribution angle calculated based on 10% of the maximum light intensity is greater than 130°, which is suitable for wide-angle cameras.
[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A dual-color LED freeform surface lens, characterized in that, The lens body includes a lens body with a groove at the bottom. The bottom of the groove forms the light-incident surface of the lens body, and the top of the lens body forms the light-outceasing surface of the lens body, so that the light-incident surface and the light-outceasing surface are arranged in a relative relationship. The dual-color LEDs are all disposed in the groove, and the light-emitting direction of the dual-color LEDs is towards the light-incident surface.
2. The dual-color LED freeform surface lens according to claim 1, characterized in that, The light-incident surface is provided with a number of first transparent protrusions arranged in a row.
3. A dual-color LED freeform surface lens according to claim 2, characterized in that, The first transparent protrusion protrudes in a direction away from the light-incident surface.
4. A dual-color LED freeform surface lens according to claim 2, characterized in that, The light-emitting surface is provided with several second transparent protrusions arranged in a row.
5. A dual-color LED freeform surface lens according to claim 4, characterized in that, The first transparent protrusion protrudes in a direction away from the light-emitting surface.
6. A dual-color LED freeform surface lens according to claim 5, characterized in that, Both the first transparent protrusion and the second transparent protrusion are spherical structures.
7. A dual-color LED freeform surface lens according to claim 1, characterized in that, The outer surface of the lens body is provided with several facets, and the edge line between two adjacent facets extends along the height direction of the lens body.
8. A dual-color LED freeform surface lens according to claim 1, characterized in that, The area of the light-emitting surface is larger than the area of the light-incident surface.
9. A dual-color LED freeform surface lens according to claim 1, characterized in that, The lens body is made of transparent material and is injection molded in one piece.
10. A wide-angle camera lighting system, characterized in that, It includes a red LED light source, a white LED light source, and a dual-color LED freeform surface lens as described in any one of claims 1-9, wherein the red LED light source and the white LED light source are disposed within the groove.