CN102062346A - 发光组件 - Google Patents
发光组件 Download PDFInfo
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- CN102062346A CN102062346A CN2009103096378A CN200910309637A CN102062346A CN 102062346 A CN102062346 A CN 102062346A CN 2009103096378 A CN2009103096378 A CN 2009103096378A CN 200910309637 A CN200910309637 A CN 200910309637A CN 102062346 A CN102062346 A CN 102062346A
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- 238000004020 luminiscence type Methods 0.000 claims description 18
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- 238000005282 brightening Methods 0.000 abstract 1
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- 238000007789 sealing Methods 0.000 description 4
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/69—Details of refractors forming part of the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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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
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Abstract
一种发光组件,其包括一透镜及一发光二极管,该透镜包括一入光面及一出光面,该入光面朝向发光二极管而将发光二极管的出射光线会聚至透镜内,该出光面的曲率大于入光面的曲率,该出光面至少有两处的曲率不等。本发明的发光组件可将出光角控制在理想范围内,防止输出光型的周缘发黄或发亮。
Description
技术领域
本发明涉及一种发光组件,特别是指一种发光二极管组件。
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。
直接自发光二极管出射的光线往往不能很好地满足照明需求,目前一般采用在发光二极管上加装透镜的方式来对其输出光型进行调整。根据对光线调节效果的不同,透镜又可分为聚光型及散光型两种。由于照明领域通常对光强要求较高,因此聚光型透镜在该领域应用更为广泛。然而,目前常用的聚光型透镜对光束张角的控制能力不足,导致部分光线以较大角度出射,从而造成输出光型的边缘发黄或者出现亮圈的现象,不利于产业应用。
发明内容
本发明旨在提供一种发光组件,其能将输出光束张角控制在较小的范围内。
一种发光组件,其包括一透镜及一发光二极管,该透镜包括一入光面及一出光面,该入光面朝向发光二极管而将发光二极管的出射光线会聚至透镜内,该出光面的曲率大于入光面的曲率,该出光面至少有两处的曲率不等。
该出光面的曲率整体上呈自外向内增大的趋势。
该出光面有三处的曲率相等。
该出光面的曲率在0.13~0.2之间变化。
该入光面为一凹球面。
该入光面的曲率为0.13。
该出光面的最大直径大于入光面的最大直径。
该发光二极管被透镜所罩设,透镜具有一光轴,透镜的入光面在垂直于光轴的平面内的投影覆盖整个发光二极管。
该透镜包括二相对设置的引脚,每一引脚开设一沟槽。
该发光二极管安装于一电路板上,引脚的沟槽内有黏接至电路板的黏接材料。
与现有技术相比,本发明的发光组件的透镜的出光面的曲率要大于入光面的曲率,出光面较入光面的聚光能力更强,自发光二极管发出的光线经入光面调整之后再经出光面的进一步调整,可会聚在一较窄的光束内,从而防止输出光型边缘发黄或发亮的情况发生。
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是本发明的发光组件中的透镜的立体图。
图2是图1的倒置图。
图3是本发明发光组件的剖面图。
具体实施方式
请参阅图1及图3,本发明的发光组件包括一发光二极管模组10及一透镜30。该发光二极管模组10包括一电路板12及一安装在电路板12上的发光二极管20。该电路板12用于支撑并同时给发光二极管20提供能量。该发光二极管20包括一基座22、一固定于基座22上的芯片24及一罩住芯片24的封罩26。该基座22为矩形,其可由绝热材料(如塑胶)或者导热材料(如陶瓷)制成。该芯片24通过导热材料(图未示出)黏结于基座22顶面。该封罩26固定于基座22顶面以将芯片24与外界隔绝,防止其受到外界环境的影响。封罩26为圆顶形,以对芯片24发出的光线进行初步调节。该发光二极管20具有一光轴I,其发出的光线关于该光轴I旋转对称分布。
请一并参阅图2,透镜30由透明材质如PC或PMMA等一体制成。该透镜30包括一底座32及一形成于底座32上的调光部34。该底座32呈圆柱状,其底面开设一矩形的收容槽320。该收容槽320的深度及面积与发光二极管20基座22的高度及面积相仿,以恰好收容发光二极管20基座22。该底座32的相对两侧水平向外延伸出二引脚36。每一引脚36厚度小于底座32的厚度,且其底面与底座32的底面处于同一平面。每一引脚36在其底面开设一沟槽360,用于点入黏胶等黏接材料,以将引脚36固定于电路板12上。由于黏胶的厚度较小,沟槽360的深度无需太大,大致相当于收容槽320的深度的1/4左右。底座32在二引脚36的正上方分别开设二缺口322,用于标示透镜30的安装方向。
透镜30在其内部开设一与收容槽320连通的内腔38,用于收容发光二极管20的封罩26。内腔38的截面呈圆形,其直径略小于收容槽320的长度并大于收容槽320的宽度。内腔38的内侧壁面340为一圆柱面,顶面为一凹球面。凹球面构成透镜30的入光面342,其在垂直于光轴I平面内的投影基本覆盖整个发光二极管20,即是说,发光二极管20所发出的所有光线基本都会经过凹球面进入透镜30内。凹球面的曲率为一介于0.08~0.18(本发明的所有曲率的单位都是1/mm,下同)之间的常数,优选为0.13,其可将发光二极管20的光线以会聚的方式折射入透镜30的调光部34内。
该调光部34为一上凸的圆顶形。该调光部34关于光轴I旋转对称分布,其外表面构成透镜30的出光面344。该出光面344的最大直径即出光面344底部的直径大于入光面342的最大直径即圆柱面340的直径,以对自入光面342进入调光部34的所有光线进行调节。与入光面342恒定的曲率不同,该出光面344的曲率呈连续变化,其总体呈现自外向内逐渐增大的趋势。更进一步地,取出光面344在图3中的截面上任意一点与发光二极管20芯片24的连线偏离光轴I的角度为θ,随着θ角的变化,出光面344的曲率变化大致可分为四段区域:在第一段区域中,出光面344在其相对光轴I成最大θ角(本实施例中为60度)处的曲率为0.14,随着θ角的减小,曲率逐渐减小至最小值0.13;在第二阶段,随着θ角的继续减小出光面344的曲率开始逐渐增大至0.22;在第三阶段,出光面的曲率随着θ角的减小而降至0.20;在第四阶段,随着θ角逐渐逼近0度,出光面344曲率再度呈现上升趋势,并在θ=0时达到最大值0.24。由上述四阶段可知,由于曲率呈现波浪状起伏,透镜30的出光面344在光轴I的一侧有三处的曲率相同。第一阶段、第三阶段及第四阶段所经历的角度范围均小于第二阶段所经历的角度范围,因此出光面344的曲率在整体上呈现出随θ角减小而增大的趋势。由于最小值与入光面342的曲率值相当,因此出光面344各处的曲率均大于入光面342的曲率。
与透镜30入光面342相比,出光面344更大的曲率可对调光部34内的光线起到更好的聚光效果,并且借由上述特定规律的曲率变化,自出光面344出射的光线可被聚集在30度的出光角内,从而防止光型边缘发黄或发亮的情况产生。
Claims (10)
1.一种发光组件,包括一发光二极管及一透镜,该透镜包括一出光面及一入光面,其特征在于:该入光面朝向发光二极管而将发光二极管的出射光线会聚至透镜内,该出光面的曲率大于入光面的曲率,出光面的曲率至少有两处不等。
2.如权利要求1所述的发光组件,其特征在于:该出光面的曲率整体上呈自外向内增大的趋势。
3.如权利要求2所述的发光组件,其特征在于:该出光面有三处的曲率相等。
4.如权利要求2所述的发光组件,其特征在于:该出光面的曲率在0.13~0.24之间变化。
5.如权利要求1所述的发光组件,其特征在于:该入光面为一凹球面。
6.如权利要求5所述的发光组件,其特征在于:该入光面的曲率为0.13。
7.如权利要求1至6任一项所述的发光组件,其特征在于:该出光面的最大直径大于入光面的最大直径。
8.如权利要求1至6任一项所述的发光组件,其特征在于:发光二极管被透镜所罩设,透镜具有一光轴,透镜的入光面在垂直于光轴的平面内的投影覆盖整个发光二极管。
9.如权利要求1至6任一项所述的发光组件,其特征在于:该透镜包括二相对设置的引脚,每一引脚开设一沟槽。
10.如权利要求9所述的发光组件,其特征在于:该发光二极管安装于一电路板上,引脚的沟槽内有黏接至电路板的黏接材料。
Priority Applications (2)
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CN2009103096378A CN102062346A (zh) | 2009-11-12 | 2009-11-12 | 发光组件 |
US12/756,972 US20110110101A1 (en) | 2009-11-12 | 2010-04-08 | Led unit |
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CN2009103096378A CN102062346A (zh) | 2009-11-12 | 2009-11-12 | 发光组件 |
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CN (1) | CN102062346A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105333369A (zh) * | 2014-07-24 | 2016-02-17 | 市光法雷奥(佛山)汽车照明系统有限公司 | 用于机动车辆的牌照灯以及包含该牌照灯的机动车辆 |
CN109084270A (zh) * | 2018-07-20 | 2018-12-25 | 常州星宇车灯股份有限公司 | 一种牌照灯 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102003676B (zh) * | 2009-08-28 | 2012-10-10 | 鸿富锦精密工业(深圳)有限公司 | 透镜 |
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US5836676A (en) * | 1996-05-07 | 1998-11-17 | Koha Co., Ltd. | Light emitting display apparatus |
US20080203412A1 (en) * | 2007-02-28 | 2008-08-28 | E-Pin Optical Industry Co., Ltd. | LED assembly with molded glass lens |
CN201284938Y (zh) * | 2008-10-22 | 2009-08-05 | 黄国进 | 具有集光结构的发光二极管模组及应用该模组的灯具 |
US20090225552A1 (en) * | 2008-03-10 | 2009-09-10 | National Central University | Light source-modulating device having composite curved surfaces |
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US6541800B2 (en) * | 2001-02-22 | 2003-04-01 | Weldon Technologies, Inc. | High power LED |
KR100631992B1 (ko) * | 2005-07-19 | 2006-10-09 | 삼성전기주식회사 | 측면 방출형 이중 렌즈 구조 led 패키지 |
US7828453B2 (en) * | 2009-03-10 | 2010-11-09 | Nepes Led Corporation | Light emitting device and lamp-cover structure containing luminescent material |
TW201033537A (en) * | 2009-03-13 | 2010-09-16 | Genius Electronic Optical Co Ltd | Lens for LED illumination |
-
2009
- 2009-11-12 CN CN2009103096378A patent/CN102062346A/zh active Pending
-
2010
- 2010-04-08 US US12/756,972 patent/US20110110101A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5836676A (en) * | 1996-05-07 | 1998-11-17 | Koha Co., Ltd. | Light emitting display apparatus |
US20080203412A1 (en) * | 2007-02-28 | 2008-08-28 | E-Pin Optical Industry Co., Ltd. | LED assembly with molded glass lens |
US20090225552A1 (en) * | 2008-03-10 | 2009-09-10 | National Central University | Light source-modulating device having composite curved surfaces |
CN201284938Y (zh) * | 2008-10-22 | 2009-08-05 | 黄国进 | 具有集光结构的发光二极管模组及应用该模组的灯具 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105333369A (zh) * | 2014-07-24 | 2016-02-17 | 市光法雷奥(佛山)汽车照明系统有限公司 | 用于机动车辆的牌照灯以及包含该牌照灯的机动车辆 |
CN109084270A (zh) * | 2018-07-20 | 2018-12-25 | 常州星宇车灯股份有限公司 | 一种牌照灯 |
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