TW565951B - LED lens - Google Patents

LED lens Download PDF

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Publication number
TW565951B
TW565951B TW091108982A TW91108982A TW565951B TW 565951 B TW565951 B TW 565951B TW 091108982 A TW091108982 A TW 091108982A TW 91108982 A TW91108982 A TW 91108982A TW 565951 B TW565951 B TW 565951B
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Taiwan
Prior art keywords
lens
patent application
central axis
light
item
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TW091108982A
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English (en)
Inventor
Robert S West
Gary D Sasser
James W Stewart
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Lumileds Lighting Llc
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor 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
    • H01L33/48Semiconductor 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
    • H01L33/58Optical field-shaping elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02Combinations of only two kinds of elements
    • F21V13/04Combinations of only two kinds of elements the elements being reflectors and refractors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/04Refractors for light sources of lens shape
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0091Reflectors for light sources using total internal reflection
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028Condensers, 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061Condensers, 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0071Condensers, 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00Simple or compound lenses
    • G02B3/02Simple or compound lenses with non-spherical faces
    • G02B3/08Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor 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
    • H01L33/48Semiconductor 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
    • H01L33/58Optical field-shaping elements
    • H01L33/60Reflective elements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00Illumination
    • Y10S362/80Light emitting diode

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Led Device Packages (AREA)
  • Planar Illumination Modules (AREA)

Description

565951
性。 圖2說明如圖1之傳統式LED封裝1〇,此者係沿一折射光 導器20之局部的邊緣所耦接。該LED封裝1〇位於光導器2〇 沿該光導器20的寬度之邊緣處。由該LED封裝1〇所發出的 光線Rl、R2、R3會被沿該光導器20的長度所傳播。圖3說 10,該等係沿如圖2之光導器20的 寬度上所放置。這些傳統式LED/光導器組合並不具效益, 由於這些會要求大量的LED封裝10來照明該光導器,從而 S 口相*小的可接收角度而造成耦接無效益性。這些傳統 式LED封裝丨〇必須要是沿該光導器2〇的側邊上整個長度而 排置’以完全地照明該光導器2〇。 故確需要-種LED封裝,俾以有效率地耦接到淺型反射 器及薄型光導器。㈣亦需要—種LED封裝,以讓這些次 級光學元件能夠具備相當大的照明區域。 發明概要 ’ 一種具側邊光線發射的發光二極體,可令光導器及反』 為具備極薄的外型而擁有大照明區域。 根據本發明一具體實施例,一種光線發射裝置,其中/ 有一發光二極體封裝。該封裝具有一前端表面和一後端; 面,亚含有一發光二極體’供以至少於_近似法向垂直, 前端表面的第-方向上發射光線而離出該封裝。在此亦; 一透鏡’ t玄者延伸離於該封裝前端表面以接&來自於該 極體的光線。該透鏡的形狀係為將從該二極體所收到的 線’包含在該第一方向上的光線,予以重新導向,使… 本紙張尺度適財g目家樣準(CNS) A4規格(21GX 297公嫠)--------
裝 訂
線 565951
該透鏡來的大部分光線會概為 ^ L 勺卞仃於该封裝前端表面。 根據本發明另一具體實絲^, 租芦、轭例,一種從發光二極體發射光 、.東的方法,包含從—發光二極 體封衣產生一光線輸出。該 封裝具一前端表面和一後端声 、, 俊而表面,亚含有一發光二極體, 供以至少於一近似法向垂直於 直於則鳊表面的第一方向上發射 光線而離出該封裝。該方、本^ ”系方法包括利用一透鏡將從該二極體 斤收到的光線重新•向’此透鏡延伸離於該封裝前端表面 ’以接收來自於該二極體的光線,包含在該第一方向上的 光線’在此該透鏡會將光線重料向,使得從該透鏡來的 大4分光線會概為平行於該封裝前端表面。 _圖式簡罩說明 可藉後載詳細說明並連同各隨附圖式以完整瞭解本發 明。 圖1A說明一傳統式LED封裝; 圖1B說明另一傳統式l E D封裝; 圖2說明一傳統式邊緣照明光導器之戴面圖; 圖3說明如圖2光導器之外觀圖; 圖4說明本發明一具體實施例; 圖5A說明如圖4 LED封裝之戴面圖; 圖5B說明一配接於該LED封裝基座承體之透鏡戴面圖; 圖5C說明一配接於如圖5B之选鏡/承體細部圖; 圖5D說明一配接於一 LED封裝之透鏡上蓋戴面圖; 圖5E說明一透鏡厚體實施例之光線行跡; 圖5F說明另一透鏡具體實施例之光線行跡; -6-
裝 訂
線 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 565951 A7 B7 五、發明説明(4 ) 圖5G說明又另一透鏡具體實施例之光線行跡; 圖6說明如圖4之LED封裝發出的光線側邊射出; 圖7A說明一如圖4之LED封裝發出的光線側邊射出,而進 入一光導器之截面圖; 圖7B說明一如圖4之LED封裝發出的光線側邊射出,而進 入一光導器之截面圖; 圖7C說明一如圖4之LED封裝發出的光線側邊射出,而進 入一光導器之截面圖; 圖7D說明一如圖4之LED封裝發出的光線側邊射出,而進 入一光導器之戴面圖; 圖8說明一光導器外觀圖; 圖9A說明一如圖4而經架置於一光導器之暗孔上的led封 裝載面圖; 圖9B說明一如圖4而經架置於一光導器之暗孔上的led封 裝戴面圖; 二 圖9C說明一如圖4而經架置於一光導器之暗孔上的[ed封 裝戴面圖; 圖ίο說明-如圖4而經架置於一光導器之透孔上的LED封 裝戴面圖; 圖11說明一耦接於一反射器之傳統式LED封裝; 圖12說明一如圖4且併合有—淺型反射器之LED封裝; 在各圖中應用相同的參考編號表示類似或等同項目。 發明詳細說明 ” 圖4說明-根據本發明具體實施例之側邊發光咖封裝範
5 五、發明説明( 例。該LED封裝40包括一縱向封裝軸43、一 LED封裝基座42 及一透鏡44。該透鏡44係經耦接於該[ED封裝基座42。該 縱向封裝軸43通過該LED封裝基座42和該透鏡44的中心。 即如圖5A所示,該LED封裝基座42的表面會支撐一 lED晶 片52(—種具有光發pn接合的半導體晶片)以產生光線。該 LED晶片52可為任意種外形的其中一者,包含,但不限於 經平截之反置塔型(TIP)(如圖示)、立方體、長方二極體 或圓球狀。該LED晶片52可包括一底部表面,可接觸於, 會予鍍層,一反射性材料。該LED晶片52雖可自其所有側 邊發出光線,然該基座42係概經組態設定,以將所發出光 線沿該封裝的縱向封裝軸43反射朝向該透鏡44。這種基座 屬傳統式’且可包括一橢圓形反射鏡,其中該LED晶片52 駐置於該封裝基座42的表上。這種封裝的可如美國專利第 4,920,404號案文所示者,該案經受讓予本受讓人,並以引 用方式併入本案。、 可利用多種眾知技術,像是鑽石轉磨(亦即透鏡是藉具鑽 石鑽具之車床所塑形)、注入模造及鑄模等作業,依個別元 件方式來製造該透鏡44。該透鏡44可為透明材料所製,包 含’但不限於環烯共聚合物(c〇c)、聚曱基丙烯酸曱酯
(PMMA)、多元碳酸酯(ρ〔)、pc/pMMA 及 polyetherimide (PEI)。該透鏡44含有一範圍從L 45到1 6,最好是ι·53,的 折射率(η),但確可根據所採用的材料而具有較高或較低的 折射率。或另者,可藉各種技術,包含,但不限於,注入 模造(即如插入模造)及鑄模作業,而將該透鏡44構成於LED • 8 - 565951
封裝基座42和該LED晶片52上。 在透鏡44與LED晶片52間有一個容積54。可利用矽脂來 填滿並嵌封該容積54以防止污染該LED 52。該容積“亦可 為真空狀態、含有空氣或某些其他氣體,或填以光學透明 性樹脂材料,包含,但不限於,樹脂、矽脂、環氧樹脂、 水或任何具有1.4到丨.6範圍之折射率而可被注入以填滿該容 積54的材料。該容積54内的材料可為加彩以供作為濾光鏡 ,讓所有或僅部分的可見光光譜能夠通過。如係採用矽月丨 ,則該矽脂可為硬式或軟式。該透鏡44也可被彩化以作為 慮光鏡。 透鏡44包含一鋸齒狀、折射部分56及一全内反射(TIR)漏 斗型部分58。該折射部分56係經設計以折射並彎曲光線, 使得光線盡可能地以相對於該縱向封裝軸43為接近9〇度的 方式離出該透鏡44。該一鋸齒型部分56的鋸齒型或折射表 面59係皆屬透光者·?可在一給定長度的鋸齒部分内採取任 意數量的鋸齒59 ;最好會至少有一個鋸齒。可按單塊,或 另以互為耦接之個別元件,來組成該透鏡44。 該漏斗型部分58被設計成一TIR表面。TIR表面反射光線 ’使得光線盡可能地以相對於該LED封裝40的縱向封裝軸 43為接近90度的方式離出該透鏡44。大約33%從LED晶片52 所發出的光線會被反射離於該t鏡44之漏斗型部分58的TIR 表面。可於該漏斗型部分58的頂部上鍍置一金屬化層(即如 ί呂質)’以防止光線,傳通過該TIR表面。可於該漏斗型部分 58的頂部上一鍍層或薄膜(υ ν.禁制器)以防止透鏡劣化,這 -9- 本纸張尺度適用中國國家標準(CNS) Α4規格(210 X 297公釐) 565951 A7 __^__B7 五、發明説明(7 ) 是因為當出現子紫外光時PC會劣化。 也可利用任何眾知嵌封劑,像是「室溫溶補(κτν)」等等 ’來嵌封該透鏡44與封裝基底42的介面。 圖5B說明另一透鏡44配接於該LED封裝基底42之承體46 之戴面圖。為便說明,本圖中並未緣示該LED晶片52與該 基底42的其他特性。可藉各種接附方式,包含但不限於扣 合接附、軋合接附$熱化疊置、黏劑貼著以及超音波焊接 ,將該透鏡44接附於該LED封裝基底42上。該透鏡料的特 性,即如圖5B所示,可適用於按個別元件方式組成,或是 經包封於LED封裝基底42上的透鏡。圖5C說明如圖5之透鏡 /承體配接方式的細部圖。表面S可扣接符入該表面R。該表 面S可軋合接於該表面R。可利用各種方法,包含,但不限 於,塑膠熔接、超音波熔接及線性熔接,將該表面丁焊接於 該表面u。嵌封或綁接涉及到許多可能組合,像是該透鏡44 的表面S及/或Τ被嵌封/綁接於該承體46的表面尺及/或υ。 圖5D說明一配接於一具圓形透鏡12之傳統式led封裝1〇 的透鏡上蓋55戴面圖。可藉由一光學黏著劑將該透鏡上蓋 55固接於該LED封裝1〇的透鏡12。該透鏡上蓋“包含鋸齒 狀、折射部分56及一反射性漏斗型部分58 ,該等含有相同 及/或類似特性,可按與該透鏡44之折射和TIR部分56、58 相同及/或類似的方式運作,即如前文與後文所述。 圖5E、5F與5G說明通過各種曲率之透鏡的透鏡頂部表面 光線行跡。如圖5E:5G所示之特性適用於注入模造、鑄模 或其他方式所製成的透鏡。大約33%從LED晶片52所發出的 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公复]----- 565951 A7
TIR声而τ θ不,該光、㈣從仏焦⑽發出)會被反射離於該 r…。圖職明一曲型漏斗狀部分58,在此該表面1係 女、,、所定義,該曲線會維持大於-TIR臨界角之角度, 但:光線按對該縱向封裝㈣為約9〇度而導引離於該透鏡 。圖5以明-彎線漏斗狀部分58,在此,表面ι是由f進兩 個線性部分的線段所定義,各個部分為按一大於一爪臨界 角,角度,但將元線按對該封裝軸為約%度而導引離於該 封裝。圖5G說明一線性漏斗狀部分%,在此,表面!是由一 直線所疋義,該直線係按—大於—TIR臨界角之角度,但將 光線按對該封裝軸為約9〇度而導引離於該封裝。 在圖吒-5G裡,表面η與表面丨互同運作以發出垂直於縱 向封衣軸53的光線。表面!相對於該—所定義的角度會約為 ^表面A B、C、D及E具有法向表面,使得入射光線 會被按對該橫封裝軸53為約9〇度而折射離於該透鏡。表面f G和Η會大約平行畫接入射光線,藉此將傳通於這些表面 的直射光量最小化。低於直線Ν的表面會將光線折射離於該 封裝。高於直線Μ的表面會經一TIR及折射組合而將光線導 離於迻鏡。直線Μ、N必須位於近距離内以將側邊發光最佳 化,並將橫軸方向上的發光降至最低。圖5E—5g顯示兩個 區域··在對於該縱向封裝軸53約45度或更多處之折射的區 域’以及在對於該縱向封裝軸最高達約45度或更多處之 TIR/折射的區域。例如在圖5E — 5G裡顯示一約⑽度丁丨…折射 區域。兩個區域巧,介面會是離該縱向封裝軸53為約45度 。直線Μ和直線N間的距離X會被保持為最小值,藉以將來 -11 - 本纸張尺度適用中國國家標準(CNS) Α4規格(210X297公爱) 565951 〜 A7 _____ ,, _B7 五、發明説明(~~~-- 自泫透鏡的光線之側邊擷出最佳化。直線M可等於直線N (即如X=0)。 圖6說明一從圖4之LED封裝40的光線發射戴面圖。該 LED封裝40的透鏡44可產生一概為垂直於該LED封裝4〇縱向 封裝軸66之輻射樣式62。在圖6裡,此輻射樣式62概垂直於 該LED封裝軸66,並說明相對光線強度與分布狀況。這個 照明範圍62環繞於該LED封裝40,並概為碟狀或環狀。光 線是按概平行於一光學平面64而從該透鏡44發出。 側邊發光可讓即使是單一 LED封裝4〇能夠照亮多個光導 器72,即如圖7所示。例如,圖7A說明兩個平面型光導器72 ,對至少一位在兩個光導器72之間的LED封裝4〇,以近似 端對端間隔方式置放。該LED封裝4〇的側邊光線可供光線 進入各個光導器72。該LED封裝40亦可被插置於光導器72 的本體内。在此,可採用各式形狀的光導器。沿該等光導 器長度的側邊可為伞面或扁尖狀。例如,單側邊發光led 封裝40可被放在一碟狀光導器的中央處(未以圖示)。當光線 被從忒LED封裝40的側邊以360度發出時(即如從該LED封裝 40中央的所有方向),光線會進入光導器,並在整個光導器 内折射與反射(未以圖示)。 該光導器可為按光通性材料製作,包含,但不限於,PC 或PMMA。光導器可為固定厚度或扁尖狀。側邊發光可提 供具最佳範圍2到8 mm厚度之薄型光導器有效的照明。圖 7B說明一光導器73範例,其厚度為5 〇 mm,這是大於透鏡 44的高度。由於光導器73的厚度大於透鏡料的高度,因此 -12· 本纸張尺度適用中S S家標準(CNS) A4規格(2i〇x297公釐) 565951 A7 ______B7 五、發明説明(1Q ) 可在該光導器73中運用一暗孔94以供耦接該LED封裝40。 可從透鏡44的焦點F來測量圖7B、7C及7D之透鏡44的維度 。圖7C說明一光f ϋ 75的範例,其厚度為4 5 mm,等於該 透鏡44的咼度。由於光導器75的厚度等於透鏡44的高度, 因此可在該光導器75中運用一透孔96以供耦接於該LED封 裝40。圖7D說明圖4之LED的側邊發光,照入薄於該透鏡44 的咼度之光導1§77。由於光導器77的厚度少於透鏡44的高 度,因此必須在該光導器77中運用一透孔96以供耦接於該 LED封裝40。即使是該光導器77薄於該透鏡44的高度,大 部分從該LED晶片52發出的光線仍會被導向進入該光導器 77,因為多數從該I‘:ED晶片52發出的光線是從該透鏡44的 側邊所發出。從該透鏡44所發出的光線會朝向置放在該透 鏡高度一半上部處的光導器77。例如,透鏡44側邊靠近其 頂部向外發出的光線會被導向略為向下,而透鏡44側邊靠 近其底部向外發出的光線會被導向略為向上。被導向該光 導器77内之光線的部分會隨著該光導器77相對於透鏡44的 厚度減少而降低。該光導器77可為任何形狀,其中包含, 但不限於,直線、扁尖形、長方形、圓形或方彬。 圖8說明一平面型光導器82端點部分之外觀圖。該側邊發 光LED封裝40可讓LED封裝40放在該光導器82的内側。在該 光導器82的本體上鑽製有一或更多孔洞86,而相對應數量 的LED組裝置40放在該等孔洞86内。可將該等孔洞86製作 為在該光導器82裡任意深度,包含但不限於該光導器82的 整個厚度。該LED封裝40的透鏡44或不會觸碰到該光導器 •13· 本紙張尺度適財目目家標準(CNS) A视格(21Q χ 297公茇) *-一 565951 A7 B7 82。可於該光導器82的至少一端點上置以一反射性鍍層或 薄膜84,以提高該光導器82的内部照明。 圖9A係说明女裝私一平面型光導器82之暗孔94内的側邊 發光LED封裝40。該暗孔94的頂部表面91大致與該平面型 光導器82的頂部表面95平行。該暗孔94的頂部表面91可經 鍍以一反射性鑛層或薄膜以反射光線,藉此可讓較薄的光 導器封裝具類似的耦接效益性。 圖9B說明經架置於一平面型光導器82之漏斗型暗孔卯内 的側邊發光LED封裝40。該漏斗型暗孔98的頂部表面%大 致與該LED封裝40之透鏡44的漏斗型部分58平行。該漏斗 型暗孔98的頂部表面93可經鍍層以反射光線,藉此可讓較 濤的光導為封裝具類似的輕接效益性。該暗孔可具有平坦 、漏斗或曲型表面,以利於將從LED所發出進入光導器内 的光線重新導向。 圖9C έ兒明經架置於一平面型光導器82之v型暗孔97内的側 邊發光LED封裝40。該暗孔97的ν型頂部表面99大致與該 LED封裝40之透鏡44的漏斗型部分58平行。該暗孔可具有 平坦、漏斗或曲金表面,以利於將從led所發出進入光導 态内的光線重新導向。該V型暗孔97的頂部表面99可經鍍層 以反射光線,藉此可讓較薄的光導器封裝具類似的耦接效 益性。 圖10說明經架置於一平面型光導器82之透孔96内的側邊 -14- 本纸張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 裝 ij
線 565951
發光LED封裝40。該透孔96可讓LED封裝4〇按大致垂直於該 光導器82的方式架置。 圖11說明一種傳統式LED/反射器配置方式。現已知可利 用具圓形透鏡12之LED封裝10與一深型反射器92之組合。 泫反射器92腔體的深度形狀,可將從該LED封裝1〇之圓形 透鏡12所發出的光線予以光準。這個深度反射器腔體對於 光線控制是必要的。 即如可從圖12所見,可藉一淺型、大面積反射器1〇2與一 側邊發光LED封裝40組合運用,以便在相較於一傳統式led 封裝10更為廣泛的备積上發射光線。透鏡的橫封裝軸會近 似平行於反射為102的放射軸122。這種側邊發光可讓該反 射器102的側壁不致如傳統式反射器% (圖π)般地深。光線 疋k其透鏡144所發出的,而概為垂直於該LED封裝4〇的橫 封裝軸116。側邊發sLED封裝4〇可以藉淺型大面積反射器 而提供相較於傳統式LED非常高的集光效益性。比起與傳 統式LED組裝1〇組合運用的窄型、深度反射器92,該淺型 反射器102會在較廣的面積上將所發出的光線予以光準。淺 型、大面積反射器102可為BMC體型鑄模複合物、pc、 PMMA、PC/PMMA及PEI所製成。可將_覆蓋於該反射器 102内部之反射性薄膜120按高度反射性材料予以金屬化、 藏鍍等,這些材料包含,但不限於,銘f (⑷和路㈣ (NlCr)。比起傳統式LED/深型反射器組合,本側邊發光 -15- 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公羡)

Claims (1)

  1. 、申請專利範圍 1. 一種透鏡,其中包含: _ 一本體,包含·· -一中央軸,其係沿該本體長度而延伸; _一第一表面,其耦接至一光源; •一鋸齒狀透鏡部份,藉此在光線進入該鋸齒狀透鏡 部份後該鋸齒狀透鏡部份會折射光線,而使得從該鋸齒 狀透鏡部份所發出的大部份光線會略為垂直力該本體的 中央軸;以及 漏斗型透鏡部分,藉此在光線進入該漏斗型透鏡 部份後該漏斗型透鏡部份會反射光線,而使得從該漏斗 型透鏡部份所發出的大部份光線會略為垂直於該本體的 中央軸。 2.如申請專利範圍第1項之透鏡,其中該第一表面係垂直於 該中央軸。 3·如申請專利範圍第1項之透鏡,其中該透鏡係經鑽石轉 磨。 4. 如申請專利範圍第1項之透鏡,其中該透鏡係經注入模 造° 5. 如申請專利範圍第丨項之透鏡,其中該透鏡係經鑄模。 6·如申請專利範圍第1項之透鏡,其中該透鏡具有一範圍從 1.45到1.6的折射率。 7. 如申請專利範圍第1項之透鏡,其中該透鏡具有一 1.53的折射率。 ” 一 8. 如申請專利範圍第1項之透鏡,其中該透鏡係按如下 565951 申請專利範圍 A8 B8 C8 D8 中所選定之材料所製成:PC、PMMA、PEI、PC/PMMA 及 coc 〇 9·如申清專利範圍第1項之透鏡,其中進一步包含一接附部 份’使得該透鏡可耦接之光源為一LED。 10·如申請專利範圍第1項之透鏡,其中該漏斗型透鏡之反射 性表面包含一以遠離該本體中央軸之方式彎曲的曲型部 伤’使得當該曲型部份掃過該中央軸時可在該中央軸附 近構成一曲型v形。 11·如申凊專利範圍第丨項之透鏡,其中該漏斗型透鏡之反射 性表面包含一以遠離於該本體中央軸之方式而成角度的 線性部份,使得當該線性部份掃過該中央軸時可在該中 央軸附近構成一 V形。 12. 如申請專利範圍第1項之透鏡’其中該漏斗型透鏡之反射 性表面包含至少兩個互為交角且離於該本體中央軸的連 接線I·生邛伤,使得當該至少兩個連接線性部份掃過該中 央轴時,可在該中央軸附近構成一 vB。 13. 如申請專利範圍第旧之透鏡,其中該第一表面進一步包 含-凹處’在此當該透_接於—光源時,該光源可為 至少部份地於該凹處内加以定位。 14· 一種透鏡覆蓋,可附接於一光源,其中包含: -一本體,包含: -一中央軸,其係沿該本體長度而延伸; -一第一表面,其耦接至一光源; -一鋸齒狀透鏡部份 藉此在光線進入該鋸齒狀透鏡
    5 6 5
    4份後該鋸齒狀透鏡部份會折射光線,而使得從該鋸齒 狀透鏡部份所發出的大部份光線會略為垂直於該本體的 中央軸; -一漏斗型透鏡部分,藉此在光線進入該漏斗型透鏡 部份後該漏斗型透鏡部份會反射光線,而使得從該漏斗 型透鏡部份所發出的大部份光線會略為垂直於該本體的 中央軸;以及 -一接附裝置,用以耦接該透鏡覆蓋於該光源,在此 該接附裝置會被耦接到該鋸齒狀透鏡部份。 15·如申請專利範圍第14項之透鏡覆蓋,其中該第一表面係 垂直於該中央軸。 16·如申請專利範圍第14項之透鏡覆蓋,其中該透鏡係經鑽 石轉磨。 17·如申請專利範圍第14項之透鏡覆蓋,其中該透鏡係經注 入模造。 18·如申請專利範圍第14項之透鏡覆蓋,其中該透鏡係經鑄 模。 19·如申請專利範圍第14項之透鏡覆蓋,其中該透鏡具有一 範圍從1.45到1.6的折射率。 20·如申請專利範圍第14項之透鏡覆蓋,其中該透鏡具有一 約為1.53的折射率。 21·如申請專利範圍第η項之透鏡覆蓋,其中該透鏡係按如 下群組中所選定之材料所製成:PC、pMMA、PEI、 本紙張尺度適用中國國豕標準(CNS) A4規格(210 X 297公董) :、申請專利範圍 PC/PMMA及 COC。 22’如申請專利範圍第14項之透鏡覆蓋,其中該透鏡係經附 接於該光源,而一光學黏著劑位於該透鏡與該光源間。 23_如申請專利範圍第22項之透鏡覆蓋,其中該光源係一 led封裝’而該第一表面係經塑型以耦接於該led封裝 之透鏡。 24·如申請專利範圍第23項之透鏡覆蓋,其中該[ED封裝之 透鏡係圓形者。 25·如申請專利範圍第14項之透鏡覆蓋,其中該透鏡係以一 位於該透鏡及該光源間之指數相符、非黏著性材料而附 接於一 LED。 26.如申請專利範圍第14項之透鏡覆蓋,其中該透鏡係藉外 部方式接附於一 LED,而空氣佔據該透鏡與該光源間的 容積。 27·如申請專利範圍第14項之透鏡覆蓋,其中該漏斗型透鏡 之反射性表面包含一以遠離於該本體中央軸之方式彎曲 的曲型部份,使得當該曲型部份掃過該中央軸時可在該 中央軸附近構成一曲型v形。 28·如申請專利範圍第14項之透鏡覆蓋,其中該漏斗型透鏡 之反射性表面包含一以遠離於該本體中央軸之方式而成 角度的線性部份,使得當該線性部份掃過該中央軸時可 在該中央軸附近構成一 v形。 29·如申請專利範圍第14項之透鏡覆蓋,其中該漏斗型透鏡 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 565951 8 8 8 8 A B c D 六、申請專利範圍 之反射性表面包含至少兩個互為交角且離於該本體中央 軸的連接線性部份,使得當該至少兩個連接線性部份掃 過該中央軸時,可在該中央軸附近構成一 V形。 -5- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐)
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US20020163808A1 (en) 2002-11-07
DE60205806T2 (de) 2006-06-22

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