CN204187328U - A kind of convex lens for plurality of LEDs light source light distribution and light fixture thereof - Google Patents

本实用新型公开了一种用于多颗LED光源配光的凸透镜及其灯具，包括入射折射曲面和出射折射曲。所述入射折射曲面为内凹型，其位于所述凸透镜的底部；所述出射折射曲面为外凸型，其位于所述凸透镜的顶部。该灯具包括呈矩阵排布于铝基板上的LED光源模组及与光源适配的上述凸透镜。本实用新型可以实现一个透镜对多个小功率LED光源的配光，实现节省材料、缩小灯具尺寸的目的；且其光斑照度均匀，过渡平滑，可以消除光斑边缘出现的多个暗圈。

The utility model discloses a convex lens used for light distribution of multiple LED light sources and a lamp thereof, which comprises an incident refraction curved surface and an outgoing refraction curve. The incident refraction curved surface is concave, which is located at the bottom of the convex lens; the outgoing refraction curved surface is convex, which is located at the top of the convex lens. The lamp includes LED light source modules arranged in a matrix on the aluminum substrate and the above-mentioned convex lens adapted to the light source. The utility model can realize the light distribution of one lens to multiple low-power LED light sources, realize the purpose of saving materials and reducing the size of lamps; and the illumination of the light spot is uniform, the transition is smooth, and multiple dark circles appearing on the edge of the light spot can be eliminated.

一种用于多颗LED光源配光的凸透镜及其灯具Convex lens for light distribution of multiple LED light sources and lamp thereof

技术领域technical field

本实用新型涉及照明技术领域，特别是一种用于多颗LED光源配光的凸透镜及具有该透镜的灯具。The utility model relates to the technical field of lighting, in particular to a convex lens used for light distribution of multiple LED light sources and a lamp with the lens.

背景技术Background technique

目前大功率的灯具的光源大多采用COB光源或采用多颗小功率LED光源组成大功率的光源。随着封装技术的不断进步，小功率的LED光源的在功率不变的前提下封装尺寸也可以做的更小。将多颗小功率LED光源按矩形排列组合在一起，其组合的发光面尺寸也不会很大，如果将这几个LED小光源组合在一起作为一个单元，对这个单元采用同一个透镜进行配光，则会大量的减少透镜的使用，不但可以降低成本，且整个灯具的尺寸也可以变小，从而降低整个灯具的材料成本。At present, most of the light sources of high-power lamps use COB light sources or use multiple low-power LED light sources to form high-power light sources. With the continuous advancement of packaging technology, the package size of low-power LED light sources can be made smaller under the premise of constant power. Combining multiple low-power LED light sources in a rectangular arrangement, the size of the combined light-emitting surface will not be large. If these small LED light sources are combined together as a unit, the same lens is used for this unit. Light will greatly reduce the use of lenses, which can not only reduce the cost, but also reduce the size of the entire lamp, thereby reducing the material cost of the entire lamp.

但目前市场几乎没有针对多颗小功率的LED光源组成的光源模组的透镜。因多颗LED光源焊接在铝基板上时不可能紧密挨着，颗与颗之间会有间隙，所以组成的光源模组的面光源并不是连续的，而是离散的。而原来配单颗LED光源的透镜并不适用于多颗小功率的LED光源组成的离散发光面，特别是凸透镜，有放大LED灯珠之间间隙的作用，造成照明面的光斑上的照度分布很不均匀，过渡不平滑，且在光斑的边缘会产生多个暗圈。为了解决光斑不良现象，一般情况下会采用磨砂或加微结构的方式进行改良，但这两种方式都会降低光通量。However, there is almost no lens for a light source module composed of multiple low-power LED light sources in the market at present. Because multiple LED light sources cannot be closely connected when welded on the aluminum substrate, there will be gaps between them, so the surface light source of the light source module is not continuous, but discrete. However, the original lens with a single LED light source is not suitable for the discrete light-emitting surface composed of multiple low-power LED light sources, especially the convex lens, which can enlarge the gap between the LED lamp beads and cause the illuminance distribution on the light spot on the lighting surface Very uneven, the transition is not smooth, and there are multiple dark circles at the edge of the spot. In order to solve the problem of light spots, it is generally improved by frosting or adding microstructures, but both of these methods will reduce the luminous flux.

从以上分析可以看出，多颗小功率LED光源的组成的光源模组如果共用一个透镜，则会出现光斑照度不均匀，过度不平滑，且光斑边缘会产生多个暗圈。如果采用磨砂或加微结构的方式进行改良，都会损失光通量。From the above analysis, it can be seen that if the light source module composed of multiple low-power LED light sources shares a lens, the illumination of the spot will be uneven, the transition will not be smooth, and multiple dark circles will be generated at the edge of the spot. If it is improved by frosting or adding microstructure, the luminous flux will be lost.

实用新型内容Utility model content

本实用新型的目的在于克服现有技术所存在的不足，针对目前由多颗LED光源组成的光源模组用通用的适用于单颗LED光源的透镜进行配光，会出现光斑照度分布不均匀，照度过渡不平滑，且光斑边缘会产生多个暗圈，而采用磨砂或加微结构的解决方式都会损失光通量的缺陷，提供一种结构设计合理、简单，可用于多颗LED光源配光的凸透镜。The purpose of this utility model is to overcome the existing deficiencies in the prior art. Aiming at the current light source module composed of multiple LED light sources, a general-purpose lens suitable for a single LED light source is used for light distribution, and uneven illumination distribution of light spots will occur. The illuminance transition is not smooth, and there will be multiple dark circles at the edge of the spot, and the solution of frosting or microstructure will lose the defect of luminous flux. A convex lens with reasonable and simple structure design can be used for light distribution of multiple LED light sources. .

为了解决上述技术问题，本实用新型是通过以下技术方案实现的：In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

一种用于多颗LED光源配光的凸透镜，包括入射折射曲面和出射折射曲。所述入射折射曲面为内凹型，其位于所述凸透镜的底部；所述出射折射曲面为外凸型，其位于所述凸透镜的顶部。A convex lens used for light distribution of multiple LED light sources, including an incident refraction surface and an exit refraction surface. The incident refraction curved surface is concave, and it is located at the bottom of the convex lens; the outgoing refraction curved surface is convex, and it is located at the top of the convex lens.

进一步地，所述入射折射曲面为球面的一部分，其母线满足如下方程式：x²+(y+n)²＝R²，其中参数n和R满足如下不等式：Further, the incident refraction surface is a part of a spherical surface, and its generatrix satisfies the following equation: x ² +(y+n) ² =R ² , where the parameters n and R satisfy the following inequalities:

不等式1：0<n<(R-h)，Inequality 1: 0<n<(R-h),

不等式2： Inequality 2:

其中，h为LED光源的高度。Among them, h is the height of the LED light source.

进一步地，所述出射折射曲面为椭圆面的一部分，其母线满足如下方程式：x²/a²+(y+m)²/b²＝1，其中，a,b,m满足如下两个不等式：Further, the outgoing refraction surface is a part of an ellipse, and its generatrix satisfies the following equation: x ² /a ² +(y+m) ² /b ² =1, where a, b, and m satisfy the following two inequalities :

不等式3：0<m<b，Inequality 3: 0<m<b,

不等式4：a²-a²m²/b²>R²-n²。Inequality 4: a ² -a ² m ² /b ² >R ² -n ² .

进一步地，所述凸透镜为旋转对称体。Further, the convex lens is a rotationally symmetrical body.

进一步地，所述入射折射曲面和出射折射曲面为一体成型。Further, the incident refraction curved surface and the outgoing refraction curved surface are integrally formed.

进一步地，所述入射折射曲面和出射折射曲面采用PMMA材料注塑而成。Further, the incident refraction curved surface and the outgoing refraction curved surface are formed by injection molding of PMMA material.

与现有技术相比，本实用新型的有益效果有以下几点：使用本实用新型可以在不磨砂和加微结构的前提下，实现一个透镜对多个小功率LED光源的配光，其光斑照度均匀，过渡平滑，且可以消除光斑边缘出现的多个暗圈。Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can realize the light distribution of one lens to multiple low-power LED light sources without frosting and adding microstructures, and the light spots The illumination is uniform, the transition is smooth, and multiple dark circles appearing on the edge of the light spot can be eliminated.

本实用新型的另一目的在于针对现有装配多颗LED灯珠的灯具尺寸大，光学材料用量多，制造成本高的问题，提供一种采用上述凸透镜的灯具，其包括LED光源及与用于给该光源配光的凸透镜。所述LED光源模组由四颗小功率的LED灯光源矩阵排列组成，并焊接于铝基板上；所述凸透镜位于LED光源模组上方。Another purpose of the present utility model is to provide a lamp using the above-mentioned convex lens, which includes an LED light source and a A convex lens that distributes light to the light source. The LED light source module is composed of four low-power LED light sources arranged in a matrix and welded on the aluminum substrate; the convex lens is located above the LED light source module.

与现有技术相比，本实用新型的LED灯具可以在不磨砂和加微结构的前提下，实现一个透镜对多个小功率LED光源的配光，降低了生产成本，减少灯具尺寸，且其光斑照度均匀，过渡平滑，可以消除光斑边缘出现的多个暗圈。Compared with the prior art, the LED lamp of the present invention can realize the light distribution of multiple low-power LED light sources by one lens without frosting and adding microstructure, which reduces the production cost and the size of the lamp, and its The illumination of the light spot is uniform and the transition is smooth, which can eliminate multiple dark circles at the edge of the light spot.

附图说明Description of drawings

图1是本实用新型的凸透镜的剖视图；Fig. 1 is the sectional view of convex lens of the present utility model;

图2是光线经凸透镜折射和反射的走向示意图；Figure 2 is a schematic diagram of the direction of light refraction and reflection through a convex lens;

图3是本实用新型的LED灯具的爆炸图；Fig. 3 is an exploded view of the LED lamp of the present invention;

图4是本实用新型的LED灯具的俯视图。Fig. 4 is a top view of the LED lamp of the present invention.

具体实施方式Detailed ways

下面结合附图和具体实施例对本实用新型作进一步详细的说明，但并非是对本实用新型结构的限定。The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the structure of the utility model.

实施例1Example 1

请参阅图1，其为本实用新型的凸透镜的剖视图。本实用新型所述的凸透镜1，包括位于凸透镜1底部的内凹型入射折射曲面12和位于凸透镜1顶部的外凸型出射折射曲面11。所述凸透镜1为旋转对称体，其旋转轴为Z轴。Please refer to FIG. 1 , which is a cross-sectional view of the convex lens of the present invention. The convex lens 1 described in the present invention includes a concave incident refraction curved surface 12 at the bottom of the convex lens 1 and an external convex outgoing refraction curved surface 11 at the top of the convex lens 1 . The convex lens 1 is a rotationally symmetrical body, and its rotational axis is the Z axis.

所述入射折射曲面12为球面的一部分，如图1所示，以O点为原点建立直角坐标系，则入射折射曲面12母线方程满足如下等式：Described incident refraction curved surface 12 is a part of spherical surface, as shown in Figure 1, with O point as the origin to establish a Cartesian coordinate system, then incident refraction curved surface 12 generatrix equations satisfy the following equation:

等式1：x2+(y+n)2＝R2，Equation 1: x2+(y+n)2=R2,

其中，n和R满足以下两不等式：Among them, n and R satisfy the following two inequalities:

不等式1：0<n<(R-h)，Inequality 1: 0<n<(R-h),

不等式2： Inequality 2:

以上关系式中，h为采用凸透镜1配光的LED光源的高度。In the above relational formula, h is the height of the LED light source using the convex lens 1 for light distribution.

所述出射折射面11为椭球面的一部分，如图1所示，以O点为原点建立直角坐标系，则出射折射曲面11母线方程满足如下等式：Described outgoing refraction surface 11 is a part of ellipsoidal surface, as shown in Figure 1, with O point as the origin to establish a Cartesian coordinate system, then the outgoing refraction curved surface 11 generatrix equation satisfies the following equation:

等式2：x2/a2+(y+m)2/b2＝1,Equation 2: x2/a2+(y+m)2/b2=1,

其中，a,b,m满足如下两个不等式：Among them, a, b, m satisfy the following two inequalities:

不等式3：0<m<b，Inequality 3: 0<m<b,

不等式4：a2-a2m2/b2>R2-n2Inequality 4: a2-a2m2/b2>R2-n2

其中，在满足以上等式的情况下，R,a,b,n,m可以根据透镜尺寸和所需配光角度调整大小。Among them, in the case of satisfying the above equation, R, a, b, n, m can be adjusted according to the size of the lens and the required light distribution angle.

请参阅图2，其为光线经凸透镜折射和反射后的走向示意图。其中的光线为采用凸透镜1配光的LED光源相邻两颗LED边缘发出的两条光线A和B，因入射折射曲面12的母线参数满足不等式2，所以两条光线A、B入射时的夹角会偏小，并且两条光线A、B在入射折射曲面12的入射角会变大，以上两点可以保证相邻LED边缘发出的两条光线A、B在经过入射折射曲面12后的折射光线的夹角变的更小，再经过出射折射面11折射后，因这两条光线A、B之间的夹角变小，在被照明面上，这两条光线A、B的入射点的距离也会变的更小。所以，光线经过以上入射折射面12和出射折射面11后，由于光源阵列为离散发光面而产生的照度不均匀和边缘产生的多个暗圈的现象，也会因此而减弱。Please refer to FIG. 2 , which is a schematic diagram of the direction of light after being refracted and reflected by the convex lens. The light rays are two light rays A and B emitted from the edge of two adjacent LEDs by the LED light source with convex lens 1 light distribution. Since the busbar parameters of the incident refraction surface 12 satisfy Inequality 2, the gap between the two light rays A and B when they are incident The angle will be smaller, and the incident angle of the two light rays A and B on the incident refraction surface 12 will become larger. The above two points can ensure the refraction of the two light rays A and B emitted from the edge of the adjacent LED after passing through the incident refraction surface 12 The included angle of the light becomes smaller, and after being refracted by the outgoing refracting surface 11, because the included angle between the two light rays A and B becomes smaller, on the illuminated surface, the incident points of the two light rays A and B The distance will also become smaller. Therefore, after the light passes through the incident refraction surface 12 and the exit refraction surface 11, the phenomenon of uneven illumination and multiple dark circles at the edges due to the fact that the light source array is a discrete light-emitting surface will also be weakened.

与现有技术相比，本实用新型的用于多颗LED光源配光的凸透镜可以在不磨砂和加微结构的前提下，实现一个透镜对多个小功率LED光源的配光，其光斑照度均匀，过渡平滑，且可以消除光斑边缘出现的多个暗圈。Compared with the prior art, the convex lens used for light distribution of multiple LED light sources of the utility model can realize light distribution of multiple low-power LED light sources by one lens without frosting and adding microstructures, and the light spot illuminance Uniform, smooth transition, and can eliminate multiple dark circles at the edge of the light spot.

实施例2Example 2

如图1～4，本实用新型还提供了一种装配上述实施例1凸透镜的灯具，包括LED光源模组2及用于LED光源模组2配光的凸透镜1，LED光源模组2呈矩阵排布并焊接于铝基板3上，所述凸透镜1包括入射折射曲面12和出射折射曲面11，入射折射曲面12罩设于LED光源模组2外。As shown in Figures 1 to 4, the utility model also provides a lamp equipped with a convex lens in the above-mentioned embodiment 1, including an LED light source module 2 and a convex lens 1 for light distribution of the LED light source module 2, and the LED light source module 2 is in a matrix Arranged and welded on the aluminum substrate 3 , the convex lens 1 includes an incident refraction curved surface 12 and an outgoing refraction curved surface 11 , and the incident refraction curved surface 12 is set outside the LED light source module 2 .

本实施例中凸透镜1的结构与实施例1所述的凸透镜结构相同，具体可参照实施例1所述，在此不再赘述。The structure of the convex lens 1 in this embodiment is the same as that of the convex lens described in Embodiment 1. For details, please refer to the description in Embodiment 1, which will not be repeated here.

与现有技术相比，本实用新型的LED灯具可以在不磨砂和加微结构的前提下，实现一个透镜对多个小功率LED光源的配光，降低了生产成本，减少灯具尺寸，且其光斑照度均匀，过渡平滑，可以消除光斑边缘出现的多个暗圈。Compared with the prior art, the LED lamp of the present invention can realize the light distribution of multiple low-power LED light sources by one lens without frosting and adding microstructure, which reduces the production cost and the size of the lamp, and its The illumination of the light spot is uniform and the transition is smooth, which can eliminate multiple dark circles at the edge of the light spot.

本实用新型并不局限于上述实施方式，如果对本实用新型的各种改动或变形不脱离本实用新型的精神和范围，倘若这些改动和变形属于本实用新型的权利要求和等同技术范围之内，则本实用新型的意图也包含这些改动和变形。The utility model is not limited to the above-mentioned embodiment, if the various modifications or deformations of the utility model do not depart from the spirit and scope of the utility model, if these changes and deformations belong to the claims of the utility model and within the equivalent technical scope, Then the intent of the present utility model also includes these changes and deformations.