WO2016041430A1

WO2016041430A1 - Led spot lamp

Info

Publication number: WO2016041430A1
Application number: PCT/CN2015/087579
Authority: WO
Inventors: 王万林; 邓诗涛
Original assignee: 欧普照明股份有限公司
Priority date: 2014-09-17
Filing date: 2015-08-20
Publication date: 2016-03-24

Abstract

An LED spot lamp, comprising an LED light source (30), a condensing lens (10) and a reflection cup (20) arranged outside the condensing lens. The condensing lens comprises an inner surface (11) close to the LED light source, an outer surface (12) far away from the LED light source and an optical axis (13) located at the center of the condensing lens. The inner surface comprises an annular surface (111) around the optical axis and a top surface (112) with the center being penetrated by the optical axis. Light incident upon the annular surface is refracted towards the reflection cup, and light incident upon the top surface is refracted towards the optical axis. Light transmitted from the annular surface is refracted by the outer surface and then is emergent to the reflection cup, and the reflection cup reflects first emergent light (A) that is parallel to the optical axis. Light transmitted from the top surface is refracted by the outer surface and then is emergent to form second emergent light (B) that is close to and parallel to the optical axis. By means of the spot lamp, the LED spot light that has high central light strength, low glare rating and uniform light color can be obtained with the cooperation of reflection and transmission.

Description

一种LED聚光灯LED spotlight

技术领域Technical field

本发明涉及照明设备，尤其涉及一种LED聚光灯。The invention relates to a lighting device, in particular to an LED spotlight.

技术背景technical background

LED用于照明灯具已经开始普及，LED的光色品质要求在特定的照面也越来越高，被照物面的光色分布要求越来越高，来满足照面的人性化需求。但是LED是180°发光，其具有眩光严重，光斑效果过渡不均等特点。而在店铺、艺术馆、会议室等商业照明领域，需要用到窄角度光束，这就需要LED配合聚焦光束的光学***设计。LEDs have been popularized for lighting fixtures. The color quality of LEDs is required to be higher and higher in specific illuminations, and the light color distribution requirements of the object surface are getting higher and higher to meet the humanized needs of the face. However, the LED is 180° light, which has the characteristics of severe glare and uneven transition of the spot effect. In the commercial lighting field such as shops, art galleries, conference rooms, etc., a narrow angle beam is needed, which requires the design of the optical system of the LED with the focused beam.

目前通用的聚集光束技术是采用二次全反射式透镜，透镜是多个小透镜的阵列集成在一起，每个小透镜对单颗LED进行单独配光，来达到聚焦光线的目的。然而，这种技术存在中间障碍物在被照面上留下重影的缺点；另外一种技术是采用反射杯，反射杯直接对COB(板上芯片封装)的LED进行聚焦达到配光的目的，这种技术又存在光色不能完全混合均匀的缺陷，从而产生黄圈。At present, the common concentrated beam technology adopts a secondary total reflection lens, and the lens is an array of a plurality of small lenses integrated, and each lenslet separately aligns a single LED to achieve the purpose of focusing light. However, this technique has the disadvantage that the intermediate obstacles leave a ghost image on the illuminated surface; another technique uses a reflective cup, which directly focuses the COB (on-chip package) LED to achieve the purpose of light distribution. This technique has the drawback that the light color cannot be completely mixed uniformly, resulting in a yellow circle.

因此，亟需一种新型的LED聚光灯，其对LED光源的聚光效果更佳，具有减少重影、眩光的聚集效果，且其聚集的光中心光强高，光斑均匀。Therefore, there is a need for a new type of LED spotlight, which has better concentrating effect on the LED light source, has the effect of reducing ghosting and glare, and has a high light intensity and uniform spot.

发明概要Summary of invention

为了克服上述技术缺陷，本实用新型的目的在于提供一种LED聚光灯。In order to overcome the above technical drawbacks, it is an object of the present invention to provide an LED spotlight.

本发明公开了一种LED聚光灯，包括：LED光源、聚光透镜及设于所述聚光透镜外的反射杯，所述聚光透镜包括靠近所述LED光源的内表面、远离所述LED光源的外表面及位于所述聚光透镜中心的光轴；所述内表面包括环绕所述光轴的环面及中心由所述光轴穿过的顶面；入射至所述环面的光向所述反射杯方向折射，入射至所述顶面的光向所述光轴折射；从所述环面透射的光经所述外表面折射后出射至所述反射杯，并由所述反射杯反射出平行于所述光轴的第一出射光；从所述顶面透射的光经所述外表面折射后出射，形成一靠近且平行于所述光轴的第二出射光。The invention discloses an LED spotlight, comprising: an LED light source, a collecting lens and a reflecting cup disposed outside the collecting lens, the collecting lens comprising an inner surface close to the LED light source and away from the LED light source An outer surface and an optical axis at a center of the concentrating lens; the inner surface including a toroid surrounding the optical axis and a top surface through which the optical axis passes; the light incident to the torus The reflecting cup direction is refracted, and light incident on the top surface is refracted toward the optical axis; light transmitted from the annular surface is refracted through the outer surface and then emitted to the reflective cup, and the reflective cup is Reflected parallel to a first outgoing light of the optical axis; and light transmitted from the top surface is refracted by the outer surface and exits to form a second outgoing light that is adjacent to and parallel to the optical axis.

优选地，所述外表面呈以所述光轴为对称轴的半圆形或类半圆形。Preferably, the outer surface is semi-circular or semi-circular with an axis of symmetry of the optical axis.

优选地，所述顶面为向所述LED光源凸起的凸面。Preferably, the top surface is a convex surface that is convex toward the LED light source.

优选地，所述外表面上出射所述第二出射光的部分呈一凸起方向远离所述LED光源的凸透面。Preferably, the portion of the outer surface on which the second outgoing light is emitted is in a convex direction away from the convex surface of the LED light source.

优选地，所述凸透面经雾面磨砂制成。Preferably, the convex surface is made by matte sanding.

优选地，所述LED光源的宽度与所述聚光透镜面向所述LED光源的内表面围设形成的空腔宽度的比值在50％～75％间。Preferably, the ratio of the width of the LED light source to the width of the cavity formed by the collecting lens facing the inner surface of the LED light source is between 50% and 75%.

优选地，从所述顶面折射的光与所述光轴的夹角为0‐20°；从所述环面折射的光与所述光轴的夹角为20‐70°。Preferably, the angle of light refracted from the top surface is 0-20° with respect to the optical axis; the angle of light refracted from the torus is 20-70° from the optical axis.

优选地，所述环面为圆柱面。Preferably, the annulus is a cylindrical surface.

优选地，所述顶面与所述环面连接于一交界点；当所述交界点与所述LED光源的距离增大时，所述顶面所折射的光线与所述光轴的夹角增大，所述环面所折射的光线与所述光轴的夹角减小；当所述交界点与所述LED光源的距离减小时，所述顶面所折射的光线与所述光轴的夹角减小，所述环面所折射的光线与所述光轴的夹角增大。Preferably, the top surface and the toroid are connected to a junction point; when the distance between the junction point and the LED light source increases, an angle between the light refracted by the top surface and the optical axis Increasing, an angle between the light refracted by the torus and the optical axis is decreased; when the distance between the boundary point and the LED light source is decreased, the light refracted by the top surface and the optical axis The angle of the light is reduced, and the angle between the light refracted by the torus and the optical axis is increased.

优选地，经所述外表面折射后投射至所述反射杯的光线与所述光轴的夹角为50‐80°。Preferably, the angle of the light projected to the reflector cup after being refracted by the outer surface is 50-80° from the optical axis.

优选地，所述LED光源为多个，每一所述LED光源外均设有一所述聚光透镜；多个所述聚光透镜形成一聚光透镜组。Preferably, the LED light source is plural, and each of the LED light sources is provided with one of the collecting lenses; and the plurality of collecting lenses form a collecting lens group.

采用了上述技术方案后，与现有技术相比，具有以下有益效果：After adopting the above technical solution, compared with the prior art, the following beneficial effects are obtained:

1.聚集后得到的光中心光强高、眩光值低、光斑均匀；1. The light center obtained after the aggregation has high light intensity, low glare value and uniform spot;

2.反射杯的尺寸大大减小，降低占用空间。2. The size of the reflector cup is greatly reduced, reducing the space occupied.

附图说明DRAWINGS

图1为本发明一优选实施例中LED聚光灯的结构及出光示意图。 1 is a schematic view showing the structure and light-emitting of an LED spotlight according to a preferred embodiment of the present invention.

图2a为本发明聚光透镜的第一透视图；Figure 2a is a first perspective view of the collecting lens of the present invention;

图2b为本发明聚光透镜的第二透视图。Figure 2b is a second perspective view of the concentrating lens of the present invention.

附图标记：Reference mark:

10‐聚光透镜、11‐内表面、111‐环面、112‐顶面、12‐外表面、121‐凸透面、13‐光轴、14‐固定面；10-concentrating lens, 11-inner surface, 111-ring surface, 112-top surface, 12-outer surface, 121-convex surface, 13-optical axis, 14-fixed surface;

20‐反射杯；20-reflecting cup;

30‐LED光源。30‐LED light source.

发明内容Summary of the invention

以下结合附图与具体实施例进一步阐述本发明的优点。Advantages of the present invention are further explained below in conjunction with the accompanying drawings and specific embodiments.

参阅图1，为本发明一实施例中LED聚光灯的结构示意图。LED聚光灯包括有置于内部的LED光源30、设于LED光源30外部用作对LED光源30的出光进行聚集的聚光透镜10，以及设于聚光透镜10外用作对从聚光透镜10透射出的光进行反射的反射杯20。1 is a schematic structural view of an LED spotlight according to an embodiment of the present invention. The LED spotlight includes an LED light source 30 disposed inside, a condenser lens 10 disposed outside the LED light source 30 for collecting light emitted from the LED light source 30, and a light collecting lens 10 disposed outside the collecting lens 10 for transmitting the light from the collecting lens 10. The reflective cup 20 is reflected by light.

结合图1、图2a及图2b，聚光透镜10包括有一靠近LED光源30的内表面11、远离LED光源30的外表面12及位于聚光透镜10中心的光轴13，则LED光源30的出光首先将从该内表面11射入至聚光透镜10内，再从外表面12射出。聚光透镜10通过一安装基础(未示出)设置在反射杯20形成的容纳空间内，反射杯20同样支撑于该安装基础上。为了使聚光透镜10及反射杯20透射、反射配合射出的光中心光强较高，无重叠影，则透射与反射的光应互相独立出射。因此，对聚光透镜10配置如下：内表面11包括有环面111及顶面112，环面111环绕光轴13设置，从而环绕LED光源30，而光轴13则穿过顶面112，即顶面112正对LED光源30或与光轴13稍稍偏移面对LED光源30。由于不同透射面的不同的位置设置，以及光的折射原理，使得射入环面111及顶面112的光在经过第一次折射后偏转方向不同，入射至位于侧面的环面111的光向反射杯20即向外折射，而入射至位于端面的顶面112的光向光轴13折射。则经过第一次的折射后，分射至环面111及顶面112的光的光路已经分离。而LED光源30的出光从该外表面12射出时，由该外表面12进行二次折射，从环面111透射的光经外表面12折射后出射至反射杯20，而从顶面112透射的光经外表面12折射后从反射杯20的出光***出。在该二次折射后，分射至环面111及顶面112的光的光路进一步地分离，由环面111透射的光与光轴13呈一角度射至反射杯20，并通过反射杯20反射并准直从而射出平行光轴13的第一出射光A，由顶面112透射的光在二次折射后形成靠近光轴13且平行于光轴13的第二出射光B。其中，第一出射光集中在反射杯20靠近外边缘的部分，以形成外部聚集光；而第二出射光集中在靠近光轴13的部分，以形成光强较高的中心聚光。通过聚光透镜10的内表面11及外表面12结构配置，以及与反射杯20的配合使用，将LED光源30的出光分离成两束出光，并对每一出光进行聚集，以达到聚集的配光。同时，由于二次折射的效果，使得从环面111透射而出的光出射时，更加偏向反射杯20，从而在入射到反射杯20的反射处更加靠近反射杯20的底部。通常而言，该出射光入射到反射杯20上时，由于与反射杯20呈的入射角较大，则反射点也相对地位于反射杯20较外部的位置，而当该反射点靠近底部后，反射杯20的尺寸就可降低许多。1, 2a and 2b, the concentrating lens 10 includes an inner surface 11 adjacent to the LED light source 30, an outer surface 12 away from the LED light source 30, and an optical axis 13 at the center of the concentrating lens 10. The light is first incident from the inner surface 11 into the collecting lens 10 and then emitted from the outer surface 12. The concentrating lens 10 is disposed in an accommodating space formed by the reflecting cup 20 by a mounting base (not shown), and the reflecting cup 20 is also supported on the mounting base. In order to make the light-collecting lens 10 and the reflector cup 20 transmit and reflect light with a high intensity of the center of the light, and there is no overlapping shadow, the transmitted and reflected light should be emitted independently of each other. Therefore, the concentrating lens 10 is configured as follows: the inner surface 11 includes a toroidal surface 111 and a top surface 112, the annular surface 111 is disposed around the optical axis 13 so as to surround the LED light source 30, and the optical axis 13 passes through the top surface 112, ie The top surface 112 faces the LED light source 30 with a slight offset from the LED light source 30 or with the optical axis 13. Due to different positional settings of different transmissive surfaces and the principle of refraction of light, the light incident on the toroidal surface 111 and the top surface 112 is deflected in a different direction after the first refraction. The light incident on the toroidal surface 111 on the side is refracted toward the reflection cup 20, and the light incident on the top surface 112 of the end surface is refracted toward the optical axis 13. Then, after the first refraction, the optical paths of the light split to the toroidal surface 111 and the top surface 112 have been separated. When the light from the LED light source 30 is emitted from the outer surface 12, the outer surface 12 is twice refracted, and the light transmitted from the annular surface 111 is refracted by the outer surface 12 and then emitted to the reflective cup 20, and transmitted from the top surface 112. The light is refracted through the outer surface 12 and is emitted from the light exit opening of the reflector cup 20. After the secondary refraction, the optical paths of the light split to the toroidal surface 111 and the top surface 112 are further separated, and the light transmitted by the annulus 111 is incident at an angle to the optical axis 13 to the reflective cup 20, and passes through the reflective cup 20 The first outgoing light A, which is reflected and collimated to exit the parallel optical axis 13, the light transmitted by the top surface 112 forms a second outgoing light B near the optical axis 13 and parallel to the optical axis 13 after secondary refraction. Wherein, the first outgoing light is concentrated on a portion of the reflective cup 20 near the outer edge to form external concentrated light; and the second outgoing light is concentrated on a portion close to the optical axis 13 to form a central concentrated light having a higher light intensity. Through the structural arrangement of the inner surface 11 and the outer surface 12 of the concentrating lens 10, and the use of the reflective cup 20, the light from the LED light source 30 is separated into two beams, and each light is collected to achieve a concentrated distribution. Light. At the same time, due to the effect of the secondary refraction, the light transmitted from the annulus 111 is more deflected toward the reflecting cup 20, so that the reflection incident on the reflecting cup 20 is closer to the bottom of the reflecting cup 20. Generally, when the incident light is incident on the reflective cup 20, since the incident angle with the reflective cup 20 is large, the reflection point is also relatively located outside the reflective cup 20, and when the reflection point is near the bottom, The size of the reflector cup 20 can be reduced a lot.

在一实施例中，经过外表面12折射后，折射光线的偏折角度为10‐40°，则投射到反射杯20上的光线与光轴13的夹角为50‐80°，相应地，该光线与反射杯20表面法线方向的夹角(即入射角)减小。由于该入射角减小，反射点较靠近外表面12，反射杯20的尺寸便可减小。In an embodiment, after the outer surface 12 is refracted, the angle of deflection of the refracted light is 10-40°, and the angle between the light projected onto the reflective cup 20 and the optical axis 13 is 50-80°, and accordingly, The angle between the light and the normal direction of the surface of the reflector cup 20 (i.e., the angle of incidence) is reduced. As the angle of incidence decreases and the point of reflection is closer to the outer surface 12, the size of the reflector cup 20 can be reduced.

对于外表面12的设置，其成形为以光轴13为对称轴的半圆形或类半圆形，以加强二次折射的折射效果。该二次折射效果越大时，入射到反射杯20的反射点也就越靠近反射杯20的底部，反射杯20的尺寸便可设计的更小。 For the arrangement of the outer surface 12, it is shaped as a semicircular or semi-circular shape with the optical axis 13 as the axis of symmetry to enhance the refraction effect of the secondary refraction. The larger the secondary refraction effect, the closer the reflection point incident to the reflective cup 20 is to the bottom of the reflective cup 20, and the size of the reflective cup 20 can be designed to be smaller.

上述实施例中，外表面12也可以是任意自由曲面对称旋转形成，对出光进行二次折射，但曲面的形状应保证从反射杯20反射出的光和从外表面12出射的光为平行于光轴13的第一出射光A及第二出射光B。In the above embodiment, the outer surface 12 may also be formed by symmetrical rotation of any free curved surface to perform secondary refraction of the emitted light, but the shape of the curved surface should ensure that the light reflected from the reflective cup 20 and the light emitted from the outer surface 12 are parallel to The first outgoing light A and the second outgoing light B of the optical axis 13.

当需要对中心出射光的宽度要求更窄时，即两次折射后更靠近光轴13，则可将顶面112配置为向所述LED光源30凸起的凸面。利用表面凸起的透射面加强入射至顶面112的LED光源30的光的折射效果，从而中心的出射光更加靠近光轴13，中心出射光更窄，可应用在需要重点照明的场合上。When it is desired to narrow the width of the center outgoing light, that is, closer to the optical axis 13 after two refractions, the top surface 112 may be configured as a convex surface that is convex toward the LED light source 30. The surface convex surface is used to enhance the refraction effect of the light incident on the LED light source 30 of the top surface 112, so that the center outgoing light is closer to the optical axis 13, and the center outgoing light is narrower, which can be applied to occasions requiring emphasis illumination.

在上述实施例上进一步地或是可选地，外表面12的中心部分或其顶部，即出射第二出射光B的部分呈一凸起方向远离LED光源30的凸透面121。同样利用凸起的透射面，加强第二出射光B在经过外表面12时的折射效果，使其更加靠近光轴13。Further or alternatively, in the above embodiment, the central portion of the outer surface 12 or the top thereof, that is, the portion from which the second outgoing light B is emitted, is away from the convex surface 121 of the LED light source 30 in a convex direction. Also utilizing the raised transmission surface, the refractive effect of the second exiting light B as it passes over the outer surface 12 is enhanced to bring it closer to the optical axis 13.

上述实施例的结合或单一配置时，聚光透镜10的中心区域为双凸或平凸结构，根据需要对中心区域采用不同的实施方式如顶面112和外表面12的顶部择一或择二为凸起结构。In the combination or single configuration of the above embodiment, the central region of the concentrating lens 10 is a biconvex or plano-convex structure, and different embodiments such as the top surface 112 and the top surface 12 of the outer surface 12 are selected or selected as needed for the central region. It is a raised structure.

优选的实施方式中，凸透面121的制成过程中，经过雾面磨砂处理，避免凸透聚光透镜10产生凸透镜呈现的效果，使得第二出射光B为散射光，该散射光填充第一出射光A和第二出射光B之间的部分，从而使第一出射光A与第二出射光B结合形成一整体光束射出，并消除了产生眩光的可能。In a preferred embodiment, during the manufacturing process of the convex-transparent surface 121, a matte finish is applied to prevent the convex condensing lens 10 from producing a convex lens, so that the second outgoing light B is scattered light, and the scattered light is filled. A portion between the outgoing light A and the second outgoing light B, such that the first outgoing light A and the second outgoing light B combine to form an integral beam, and the possibility of glare is eliminated.

由于对出射光光色均匀的要求，可将环面111设置为圆柱面，从环面111出射的光均匀出射，不会有光强分布不均匀的情况。Due to the requirement for uniform color of the emitted light, the toroidal surface 111 can be set as a cylindrical surface, and the light emitted from the annular surface 111 can be uniformly emitted without uneven distribution of light intensity.

又一实施例中，LED光源30的宽度与聚光透镜10面向LED光源30的内表面11围设形成的空腔的宽度的比值在50％～70％之间，使得LED光源30被包覆在聚光透镜10的空腔内，不会紧贴造成LED光源30的热量消散至聚光透镜10上，同时也减少了聚光透镜10的占用空间，提高出光效果。In another embodiment, the ratio of the width of the LED light source 30 to the width of the cavity formed by the condenser lens 10 facing the inner surface 11 of the LED light source 30 is between 50% and 70%, so that the LED light source 30 is covered. In the cavity of the concentrating lens 10, the heat of the LED light source 30 is not closely adhered to the condensing lens 10, and the space occupied by the condensing lens 10 is also reduced, thereby improving the light-emitting effect.

对于本发明实施例而言，中心窄光束与周边宽光束的宽度是可调节的。具体为：由于入射至顶面112和环面111的分界在于LED光源30的中心与顶面112和环面111的交界线的连接面处，因此，扩大或缩小顶面112的面积，即可扩大或缩小光轴13与上述连界面间的夹角，该夹角越大中心透射光越宽，反之亦然。一优选实施例中，该夹角，即顶面112透射的光与光轴13的夹角为0‐20°间，从LED光源30发出的中心小角度光入射至顶面112，而环面111透射的光与光轴13的夹角为20‐70°间，从LED光源30发出的大角度光入射至反射杯20上，并由反射器准直，最终产生均匀光色分布的窄光束配光。For embodiments of the present invention, the width of the central narrow beam and the peripheral wide beam are adjustable. Specifically, since the boundary between the incident top surface 112 and the annular surface 111 is at the connection surface between the center of the LED light source 30 and the boundary line between the top surface 112 and the annular surface 111, the area of the top surface 112 can be enlarged or reduced. The angle between the optical axis 13 and the above-mentioned interface is enlarged or reduced, and the larger the angle is, the wider the transmitted light is, and vice versa. In a preferred embodiment, the angle between the light transmitted by the top surface 112 and the optical axis 13 is between 0-20°, and a small angle of light emitted from the LED light source 30 is incident on the top surface 112, and the torus The angle between the transmitted light of the 111 and the optical axis 13 is between 20 and 70°, and the large-angle light emitted from the LED light source 30 is incident on the reflective cup 20 and collimated by the reflector to finally produce a narrow beam of uniform light color distribution. Light distribution.

另一调节方式可以是调节环面111的高度。顶面112与环面111连接于一交界点，同时可把顶面112和环面111形成的聚光透镜的截面可看成一个基本呈矩形的形状，当环面111的宽度固定，也就是该矩形的底不变时，该交界点与LED光源30的距离(即顶面112的高度或上述矩形的高)增大或减小时，该矩形的对角线(即分隔射入顶面112和环面111的分界线)与顶面112间的夹角也随之增大或减小。当该矩形的对角线与顶面112的夹角增大时，顶面112折射的光线与光轴13的夹角增大，环面111折射的光线与光轴13的夹角减小；当该矩形的对角线与顶面112的夹角减小时，顶面112折射的光线与光轴13的夹角减小，环面111折射的光纤与光轴13的夹角增大。因此，上述实施例中将20°作为分隔第一出射光A和第二出射光B的分界角的配置是可变的，可根据实际情况在0‐90°间自由选择。Another adjustment may be to adjust the height of the annulus 111. The top surface 112 and the annular surface 111 are connected to a junction point, and the cross section of the collecting lens formed by the top surface 112 and the annular surface 111 can be regarded as a substantially rectangular shape. When the width of the annular surface 111 is fixed, that is, When the bottom of the rectangle is constant, the distance between the junction point and the LED light source 30 (ie, the height of the top surface 112 or the height of the rectangle) increases or decreases, and the diagonal of the rectangle (ie, the separation into the top surface 112) The angle between the boundary line of the toroid 111 and the top surface 112 also increases or decreases. When the angle between the diagonal of the rectangle and the top surface 112 increases, the angle between the light refracted by the top surface 112 and the optical axis 13 increases, and the angle between the light refracted by the annular surface 111 and the optical axis 13 decreases. When the angle between the diagonal of the rectangle and the top surface 112 is decreased, the angle between the light refracted by the top surface 112 and the optical axis 13 is decreased, and the angle between the optical fiber refracted by the annular surface 111 and the optical axis 13 is increased. Therefore, in the above embodiment, the arrangement of 20° as the boundary angle separating the first outgoing light A and the second outgoing light B is variable, and can be freely selected between 0 and 90° depending on the actual situation.

由于现有LED聚光灯中一般均设有多个LED光源30，对于每一LED光源30，均设有一上述实施例中的聚光透镜10，则多个聚光透镜10形成一聚光透镜组。该聚光透镜组可一体成型，匹配设置在对应的LED光源30上。Since a plurality of LED light sources 30 are generally provided in the existing LED spotlights, a collecting lens 10 in the above embodiment is provided for each of the LED light sources 30, and the plurality of collecting lenses 10 form a collecting lens group. The concentrating lens group can be integrally formed and matched on the corresponding LED light source 30.

应当注意的是，本发明的实施例有较佳的实施性，且并非对本发明作任何形式的限制，任何熟悉该领域的技术人员可能利用上述揭示的技术内容变更或修饰为等同的有效实施例，但凡未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何修改或等同变化及修饰，均仍属于本发明技术方案的范围内。 It should be noted that the embodiments of the present invention are preferred embodiments, and are not intended to limit the scope of the present invention. Any one skilled in the art may use the above-disclosed technical contents to change or modify the equivalent embodiments. , but without departing from the technical solution of the present invention, according to the present The technical and technical changes to the above embodiments are still within the scope of the technical solutions of the present invention.

Claims

一种LED聚光灯，包括：LED光源、聚光透镜及设于所述聚光透镜外的反射杯，所述聚光透镜包括靠近所述LED光源的内表面、远离所述LED光源的外表面及位于所述聚光透镜中心的光轴，其特征在于，An LED spotlight comprising: an LED light source, a collecting lens and a reflecting cup disposed outside the collecting lens, the collecting lens comprising an inner surface adjacent to the LED light source, an outer surface away from the LED light source, and An optical axis located at a center of the condensing lens, characterized in that

所述内表面包括环绕所述光轴的环面及中心由所述光轴穿过的顶面；The inner surface includes a torus surrounding the optical axis and a top surface through which the optical axis passes;

入射至所述环面的光向所述反射杯方向折射，入射至所述顶面的光向所述光轴折射；Light incident on the toroid is refracted toward the reflecting cup, and light incident on the top surface is refracted toward the optical axis;

从所述环面透射的光经所述外表面折射后出射至所述反射杯，并由所述反射杯反射出平行于所述光轴的第一出射光；Light transmitted from the torus is refracted through the outer surface and exits to the reflective cup, and the first emergent light parallel to the optical axis is reflected by the reflective cup;

从所述顶面透射的光经所述外表面折射后出射，形成一靠近且平行于所述光轴的第二出射光。Light transmitted from the top surface is refracted through the outer surface and exits to form a second outgoing light that is adjacent to and parallel to the optical axis.
如权利要求1所述的LED聚光灯，其特征在于，The LED spotlight of claim 1 wherein:

所述外表面呈以所述光轴为对称轴的半圆形或类半圆形。The outer surface has a semicircular or semi-circular shape with the optical axis as the axis of symmetry.
如权利要求1或2所述的LED聚光灯，其特征在于，The LED spotlight according to claim 1 or 2, characterized in that

所述顶面为向所述LED光源凸起的凸面。The top surface is a convex surface that is convex toward the LED light source.
如权利要求3所述的LED聚光灯，其特征在于，The LED spotlight of claim 3, wherein

所述外表面上出射所述第二出射光的部分呈一凸起方向远离所述LED光源的凸透面。The portion of the outer surface on which the second outgoing light is emitted is in a convex direction away from the convex surface of the LED light source.
如权利要求4所述的LED聚光灯，其特征在于，The LED spotlight according to claim 4, wherein

所述凸透面经雾面磨砂制成。The convex surface is made by matte sanding.
如权利要求1所述的LED聚光灯，其特征在于，The LED spotlight of claim 1 wherein:

所述LED光源的宽度与所述聚光透镜面向所述LED光源的内表面围设形成的空腔宽度的比值在50％～75％间。 The ratio of the width of the LED light source to the width of the cavity formed by the collecting lens facing the inner surface of the LED light source is between 50% and 75%.
如权利要求1所述的LED聚光灯，其特征在于，The LED spotlight of claim 1 wherein:

从所述顶面折射的光与所述光轴的夹角为0‐20°；The angle of the light refracted from the top surface and the optical axis is 0-20°;

从所述环面折射的光与所述光轴的夹角为20‐70°。The angle of light refracted from the torus is 20-70° from the optical axis.
如权利要求1所述的LED聚光灯，其特征在于，The LED spotlight of claim 1 wherein:

所述环面为圆柱面。The torus is a cylindrical surface.
如权利要求1所述的LED聚光灯，其特征在于，The LED spotlight of claim 1 wherein:

所述顶面与所述环面连接于一交界点；The top surface and the toroid are connected to a junction point;

当所述交界点与所述LED光源的距离增大时，所述顶面所折射的光线与所述光轴的夹角增大，所述环面所折射的光线与所述光轴的夹角减小；When an angle between the junction point and the LED light source increases, an angle between a light refracted by the top surface and the optical axis increases, and a light refracted by the torus is sandwiched by the optical axis Angle reduction

当所述交界点与所述LED光源的距离减小时，所述顶面所折射的光线与所述光轴的夹角减小，所述环面所折射的光线与所述光轴的夹角增大。When the distance between the junction point and the LED light source is decreased, an angle between the light refracted by the top surface and the optical axis is decreased, and an angle between the light refracted by the toroid and the optical axis Increase.
如权利要求9所述的LED聚光灯，其特征在于，The LED spotlight of claim 9 wherein:

经所述外表面折射后投射至所述反射杯的光线与所述光轴的夹角为50‐80°。The angle of the light that is refracted by the outer surface and projected onto the reflector cup is 50-80° from the optical axis.
如权利要求1所述的LED聚光灯，其特征在于，The LED spotlight of claim 1 wherein:

所述LED光源为多个，每一所述LED光源外均设有一所述聚光透镜；The LED light source is plural, and each of the LED light sources is provided with one of the collecting lenses;

多个所述聚光透镜形成一聚光透镜组。 A plurality of the condensing lenses form a concentrating lens group.