CN101949494A - 发光组件 - Google Patents

发光组件 Download PDF

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Publication number
CN101949494A
CN101949494A CN2009103042043A CN200910304204A CN101949494A CN 101949494 A CN101949494 A CN 101949494A CN 2009103042043 A CN2009103042043 A CN 2009103042043A CN 200910304204 A CN200910304204 A CN 200910304204A CN 101949494 A CN101949494 A CN 101949494A
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light
lens
emitting diode
luminescence component
light emitting
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张海卫
吕佳川
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Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
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Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
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Priority to CN2009103042043A priority Critical patent/CN101949494A/zh
Priority to US12/604,409 priority patent/US8075157B2/en
Publication of CN101949494A publication Critical patent/CN101949494A/zh
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0071—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source adapted to illuminate a complete hemisphere or a plane extending 360 degrees around the source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

一种发光组件，其包括一发光二极管及一与发光二极管搭配的纵长形透镜，该发光二极管具有一光轴，该透镜具有一供发光二极管的光线入射的入光面及一供该光线出射的出光面，该透镜入光面内凹，出光面沿透镜横向中部向入光面内凹，两侧部外凸，以使发光二极管的光线从透镜出光面两侧区域出射的光强大于中部的光强。本发明中发光二极管所发出的光线经过透镜射出后，发光二极管光轴附近的光线通过折射被分散，避免了LED的光过于集中。

Description

发光组件
技术领域
本发明涉及一种发光组件，特别是指一种用于照明的发光组件。
背景技术
作为一种新兴的光源，发光二极管凭借其发光效率高、体积小、重量轻、环保等优点，已被广泛地应用到当前的各个领域当中，大有取代传统光源的趋势。
现有的发光二极管光源通常会在发光二极管外罩设透镜以便聚集光线，但透镜投射的光形中心与周边之间的光强度相差太大。也就是说，发光二极管光源发出的光大部分靠近光轴附近出射，与光轴偏离角度大的方向光强小。因此，该发光二极管光源照射在物体的表面上的照度很难达到均匀的效果。
同样，使用这种发光二极管光源的灯具，如道路照明，中间的光强大周围的光强小，加上道路周围距离灯具比中间部分距离灯具更远，使得灯具正下方的照度高，其它区域照度低，导致路面均匀照度差，并且整个灯具的光形不甚合理，直接影响行车安全。
发明内容
本发明旨在提供一种发光组件，其可产生较为合理的光形及均匀的照度。
一种发光组件，其包括一发光二极管及一与发光二极管搭配的纵长形透镜，该发光二极管具有一光轴，该透镜具有一供发光二极管的光线入射的入光面及一供该光线出射的出光面，该透镜入光面内凹，出光面沿透镜横向中部向入光面内凹，两侧部外凸，以使发光二极管的光线从透镜出光面两侧区域出射的光强大于中部的光强。
本发明中发光二极管所发出的光线经过透镜射出后，发光二极管光轴附近的光线通过折射被分散，避免了LED的光过于集中。
下面参照附图，结合具体实施例对本发明作进一步的描述。
附图说明
图1是本发明第一实施例的发光组件的立体组装图。
图2是图1的倒置图。
图3是图1沿剖线III-III的截面图。
图4是图1沿剖线IV-IV的截面图。
图5是图1的发光组件在工作时的配光曲线。
图6是本发明第二实施例的发光组件的立体组装图。
图7是图6的发光组件在道路上照明示意图。
具体实施方式
如图1-2所示，为本发明第一实施例的发光组件，包括一发光二极管10及一罩设发光二极管10的透镜20。在本实施例中，该发光二极管10的发光角度可以达到120度。发光二极管10的结构形状并不限制。
请一并参阅图3-4，该透镜20由光学性能优越的透明材料一体成型，如PMMA或PC塑料。为方便后续描述，此处引入一立体直角坐标系(如图1)，其中X轴对应于透镜20的宽度方向(即左右方向)，Y轴对应于透镜20的高度方向(即上下方向)，Z轴对应于透镜20的长度方向(即前后方向)。同时，Y轴也是发光二极管10的光轴。
该透镜20沿Z轴纵长拉伸，且其横截面左右对称即关于Y轴对称。因此，该透镜可以通过一次射出成型或者通过挤压模具挤压出具有相同横截面的纵长一段，然后通过工具剪切成所需长度。因此，透镜20具有相同横截面的纵长形状使得其制造简单、公差容易控制、成本降低以及装配简单。透镜20的长度与宽度大致相同。该透镜20呈拱形设置，包括一朝向发光二极管10的入光面30及位于入光面30上方的一出光面40。入光面30与出光面40均为平滑曲面。如图3中透镜20的横截面所示，入光面30呈内凹设置，在截面中包括关于Y轴对称的二弧线f。入光面为V形槽构造，其中这二弧线f呈倒V形设置，其连接处A为入光面30的顶点处，且处于Y轴上。上述二弧线f相互所成的角度为130度至140度。
上述出光面40包括置于中间顶部的弧线h、置于弧线h两侧的弧线g。弧线h与两侧弧线g光滑连接，且弧线h呈内凹设置，弧线g呈外凸设置，即出光面40沿透镜20的横向中部向入光面30内凹，两侧部外凸，以使发光二极管的光线从透镜出光面两侧区域出射的光强大于中部的光强。该透镜20除了入光面30、出光面40的其它曲面为自由曲面。
由于透镜20的入光面30与出光面40中间部分即弧线h相对内凹，并且出光面40两侧部分即弧线g外凸设置，使得发光组件的最终输出光可获得一较为满意的光形。参阅图5中用实线标示的曲线，在透镜20左侧，输出光的光强自h处中部向左、右侧渐增并在g处达到最大，然后再递减并衰减为0。参阅图5中用虚线标示的曲线，在透镜20前后两侧，光强则自Y轴处向前后方向渐减至0。由此结合图3、图4的光线折射方向可知，发光组件通过透镜20的入光面30与出光面40中部的相对内凹设置使得发光二极管10中部的光线穿过透镜20后向左右分散，出光面40两侧外凸设置使得发光二极管10两侧的光线偏折不大，所以发光组件的光线沿X轴方向的光强中间较弱、两侧较强。另外，从图5中均可以得出，发光组件的输出光形在60度到80度之间的光强控制得比较小，可以获得了良好的眩光控制。
请参阅图6，为本发明第二实施例的发光组件，其包括若干发光二极管10及一罩设这些发光二极管10的透镜50。透镜50与第一实施例中的透镜20截面形状相同，只是透镜50沿Z轴的长度远大于透镜20的宽度，可以容置多个间隔设置的发光二极管10。其中透镜50的长度与发光二极管10的数量成正比，例如在本实施例中发光二极管10的数量为6，透镜50的长度大致为其宽度的6倍。
如图7所示，当将多个发光组件应用于安装于道路80一侧的路灯100时，使其X轴与道路纵向平行，Z轴与道路横向平行。由于透镜50的作用，这些发光组件的输出光的光强沿X轴方向从中间向两边增强，使得这些输出光照在离路灯100较远的路面a、c依然能提供与中间路面b差不多的、充分的照度，使得整个道路80纵向可以获得一较为均匀的照明，以确保车辆的行驶安全。
综上所述，由于透镜20、50将发光二极管10罩设，发光二极管10所出射的光线均必须经过透镜20、50的入光面30之后才能自其出光面40出射至外部空间内，因此，发光二极管10出射的光线均会被透镜20所调整，从而使最终输出光具有一两侧光强大于中间光强的符合道路需求的光形分布，并同时有效避免了眩光的产生。
可以理解地，虽然上述实施例中的发光组件是以应用于道路照明来举例，但是在需要与该发光组件配光曲线相同或相近的其它场合也适用。

Claims (10)

1.一种发光组件，其特征在于：该发光组件包括一发光二极管及一与发光二极管搭配的纵长形透镜，该发光二极管具有一光轴，该透镜具有一供发光二极管的光线入射的入光面及一供该光线出射的出光面，该透镜入光面内凹，出光面沿透镜横向中部向入光面内凹，两侧部外凸，以使发光二极管的光线从透镜出光面两侧区域出射的光强大于中部的光强。
2.如权利要求1所述的发光组件，其特征在于：该入光面为V形槽构造。
3.如权利要求2所述的发光组件，其特征在于：该入光面两侧面所成角度为130度至140度。
4.如权利要求1所述的发光组件，其特征在于：该透镜沿纵长方向具有相同的横截面。
5.如权利要求1所述的发光组件，其特征在于：该透镜的长度与对应容置若干发光二极管的数量成正比。
6.如权利要求1所述的发光组件，其特征在于：该透镜的横截面呈对称设置。
7.如权利要求1所述的发光组件，其特征在于：该透镜沿纵长方向所有横截面相同。
8.如权利要求1所述的发光组件，其特征在于：该入光面与出光面均为平滑曲面。
9.如权利要求1所述的发光组件，其特征在于：该透镜是通过挤压模具一体挤压成型制造。
10.如权利要求1所述的发光组件，其特征在于：该透镜是通过一次射出成型。
CN2009103042043A 2009-07-10 2009-07-10 发光组件 Pending CN101949494A (zh)

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