201122559 六、發明說明： 【發明所屬之技術領城】 [0001] 本發明涉及一種發光組件，特別係指一種發光二極體元 - 件。 【先前彳支術】 [0002] 作為一種新興的光源’發光二極體憑藉其發光效率高、 體積小、重量輕、環保等優點，已被廣泛地應用到當前 的各個領域當中，大有取代傳統光源的趨勢。 0 [0003] 直接自發光二極體出射的光線往往不能很好地滿足照明 需求，目前一般採用在發光二極體上加裝透鏡的方式來 對其輸出光型進行調整。根據對光線調節效舞的不同， 透鏡又可分為聚光型及散光型兩種。由於照明領域通常 對光強要求較高’因此聚光型透鏡在該領域應用更為廣 泛。然而，目前常用的聚光型透鏡對光束張角的控制能 力不足，導致部分光線以較大角度出射，從而造成輸出 光型的邊緣發黃或者出覌亮圈的現象，不利於產業應用 【發明内容】 [0004] 本發明旨在提供一種發光組件，其能將輸出光束張角控 制在較小的範圍内。 [0005] 一種發光組件，其包括一透鏡及一發光二極體，該透鏡 包括一入光面及一出光面，該入光面朝向發光二極體而 將發光二極體的出射光線會聚至透鏡内，該出光面的曲 率大於入光面的曲率，該出光面至少有兩處的曲率不等 〇 098144086 表單編號 A0101 第 3 頁/共 13 頁 0982075432-0 201122559 [0006] [0007] [0008] 與習知技術相比’本發明的發光組件的透鏡的出光面的 曲率要大於入光面的曲率，出光面較入光面的聚光能力 更強，自發光二極體發出的光線經入光面調整之後再經 出光面的進一步調整，可會聚在一較窄的光束内，從而 防止輸出光型邊緣發黃或發亮的情況發生。 【實施方式】 4參閱圖1及圖3，本發明的發光組件包括一發光二極體 模組10及一透鏡30。該發光二極體模組1〇包括一電路板 12及一安裝在電路板12上的發光二極體20。該電路板12 用於支撐並同時給發光二極體2〇提供能量。該發光二極 體20包括一基座22、一固定於基座22上的:晶片24及一罩 住晶片24的封罩26。該基座22為矩形’其可由絕熱材料 (如塑膠）或者導熱材料（如陶瓷）製成。該晶片24通 過導熱材料（圖未示出）黏結於基座22頂面》該封罩26 固定於基座22頂面以將晶片24與外界隔絕，防止其受到 外界環境的影響。封罩26為圓頂形，以對晶片24發出的 光線進行初步調節。該發光二極體20具有一光轴I，其發 出的光線關於該光軸I旋轉對稱分伟。 清一併參閱圖2，透鏡30由透明材質如pc或PMMA等一體 製成。該透鏡30包括一底座32及一形成於底座32上的調 光部34。該底座32呈圓柱狀，其底面開設一矩形的收容 槽320。該收容槽320的深度及面積與發光二極體2〇基座 22的高度及面積相仿，以恰好收容發光二極體2〇基座22 s玄底座3 2的相對兩側水平向外延伸出二引腳3 6。每一 引腳36厚度小於底座32的厚度，且其底面與底座犯的底 098144086 表單編號A0101 第4頁/共13頁 0982075432-0 201122559 面處於同一平面。每一引腳36在其底面開設一溝槽360， 用於點入黏膠等黏接材料，以將引腳36固定於電路板12 上。由於黏膠的厚度較小，溝槽360的深度無需太大，大 致相當於收容槽320的深度的1/4左右。底座32在二引腳 36的正上方分別開設二缺口 322，用於標示透鏡30的安裝 方向。 [0009] Ο Ο [0010] 透鏡30在其内部開設一與收容槽320連通的内腔38，用於 收容發光二極體20的封罩26。内腔38的截面呈圓形，其 直徑略小於收容槽320的長度並大於收容槽320的寬度。 内腔38的内侧壁面340為一圓柱面，頂面為一凹球面。凹 球面構成透鏡30的入光面342，其在垂直於光軸I平面内 的投影基本覆蓋整個發光二極體20，即是說，發光二極 體20所發出的所有光線基本都會經過凹球面進入透鏡30 内。凹球面的曲率為一介於0.08~0.18(本發明的所有曲 率的單位都是Ι/mm，下同）之間的常數，優選為0.13， 其可將發光二極體20的光線以會聚的方式折射入透鏡30 的調光部34内。 該調光部34為一上凸的圓頂形。該調光部34關於光轴I旋 轉對稱分佈，其外表面構成透鏡30的出光面344。該出光 面344的最大直徑即出光面344底部的直徑大於入光面 342的最大直徑即内侧壁面340的直徑，以對自入光面 342進入調光部34的所有光線進行調節。與入光面342恒 定的曲率不同，該出光面344的曲率呈連續變化，其總體 呈現自外向内逐漸增大的趨勢。更進一步地，取出光面 344在圖3中的截面上任意一點與發光二極體20晶片24的 098144086 表單編號A0101 第5頁/共13頁 0982075432-0 201122559 連線偏離光軸I的角度為0，隨著0角的變化，出光面 344的曲率變化大致可分為四段區域：在第—段區域中， 出光面344在其相對光轴丨成最大0角（本實施例中為6〇 度）處的曲率為0.14，隨著Θ角的減小，曲率逐漸減小 至最小值0.13 ;在第二階段，隨著0角的繼續減小出光 面344的曲率開始逐漸增大至〇.22 ;在第三階段，出光面 的曲率隨著0角的減小而降至0.20 ;在第四階段，隨著 0角逐漸逼近0度，出光面344曲率再度呈現上升趨勢， 並在θ=0時達到最大值〇. 24。由上述四階段可知，由於 曲率呈現波浪狀起伏，透鏡3〇的出光面344在光軸〗的一 侧有三處的曲率相同。[階段、第三階段及第四階段 所經歷的角度範圍均持第二階段所經歷的角度範圍， 因此出光面344的曲率在整體上呈現出隨$角減小而择大 的趨勢。由於最小值與入光面342的曲幢相當因 光面344各處的曲率均大於入光面⑽的曲率。 [0011] [0012]201122559 VI. Description of the Invention: [Technology Leading the Invention] [0001] The present invention relates to a light-emitting component, and more particularly to a light-emitting diode element. [Previous sputum support] [0002] As an emerging light source, the illuminating diode has been widely used in various fields due to its high luminous efficiency, small size, light weight and environmental protection. The trend of traditional light sources. 0 [0003] The light emitted directly from the light-emitting diode often does not meet the lighting requirements. At present, the output light pattern is generally adjusted by adding a lens to the light-emitting diode. According to the difference in the effect of light regulation, the lens can be divided into two types: concentrating type and astigmatism type. Since the field of illumination generally requires high light intensity, concentrating lenses are more widely used in this field. However, the currently used concentrating lens has insufficient control ability for the beam opening angle, which causes some rays to exit at a large angle, which causes the edge of the output light type to be yellow or bright and bright, which is not conducive to industrial application. The present invention is directed to a light-emitting assembly that is capable of controlling an output beam angle in a small range. [0005] A light-emitting assembly includes a lens and a light-emitting diode, the lens includes a light-incident surface and a light-emitting surface, and the light-incident surface is directed toward the light-emitting diode to condense the light emitted from the light-emitting diode to In the lens, the curvature of the light-emitting surface is greater than the curvature of the light-incident surface, and the curvature of the light-emitting surface is at least two. 〇098144086 Form No. A0101 Page 3 of 13 0982075432-0 201122559 [0006] [0007] [0008 Compared with the prior art, the curvature of the light-emitting surface of the lens of the light-emitting component of the present invention is greater than the curvature of the light-incident surface, and the light-emitting surface has a stronger light-collecting ability than the light-incident surface, and the light emitted from the self-luminous diode passes through After the adjustment of the illuminating surface, the further adjustment of the illuminating surface can be concentrated in a narrow beam, thereby preventing the output light-type edge from being yellow or shiny. Embodiments Referring to Figures 1 and 3, a light-emitting assembly of the present invention includes a light-emitting diode module 10 and a lens 30. The LED module 1 includes a circuit board 12 and a light emitting diode 20 mounted on the circuit board 12. The circuit board 12 is used to support and simultaneously energize the LEDs 2 . The LED 20 includes a pedestal 22, a susceptor 22, and a wafer 24 and a cover 26 covering the wafer 24. The base 22 is rectangular 'which may be made of a heat insulating material such as plastic or a heat conductive material such as ceramic. The wafer 24 is bonded to the top surface of the susceptor 22 via a thermally conductive material (not shown). The enclosure 26 is secured to the top surface of the susceptor 22 to isolate the wafer 24 from the outside world from external environmental influences. The enclosure 26 is dome shaped to provide a preliminary adjustment of the light emitted by the wafer 24. The light-emitting diode 20 has an optical axis I, and the emitted light is rotationally symmetric about the optical axis I. Referring to Fig. 2, the lens 30 is integrally formed of a transparent material such as pc or PMMA. The lens 30 includes a base 32 and a dimming portion 34 formed on the base 32. The base 32 has a cylindrical shape, and a rectangular receiving groove 320 is defined in a bottom surface thereof. The depth and the area of the receiving slot 320 are similar to the height and area of the base 22 of the LED body 2, and extend horizontally outwardly from the opposite sides of the base plate 32 of the base plate 22 s of the light-emitting diode 2 Two pins 3 6. Each pin 36 has a thickness less than the thickness of the base 32, and the bottom surface of the pin 36 is in the same plane as the bottom of the base 098144086 Form No. A0101 Page 4 of 13 0982075432-0 201122559. Each of the leads 36 defines a groove 360 on the bottom surface thereof for clicking on an adhesive material such as adhesive to fix the lead 36 to the circuit board 12. Since the thickness of the adhesive is small, the depth of the groove 360 need not be too large, and is approximately equal to about 1/4 of the depth of the receiving groove 320. The base 32 defines two notches 322 directly above the two pins 36 for indicating the mounting direction of the lens 30. [0009] The lens 30 has an inner cavity 38 communicating with the receiving groove 320 therein for receiving the cover 26 of the light emitting diode 20. The inner cavity 38 has a circular cross section and a diameter slightly smaller than the length of the receiving groove 320 and larger than the width of the receiving groove 320. The inner side wall surface 340 of the inner cavity 38 is a cylindrical surface, and the top surface is a concave spherical surface. The concave spherical surface constitutes the light incident surface 342 of the lens 30, and its projection in the plane perpendicular to the optical axis I substantially covers the entire light emitting diode 20, that is to say, all the light emitted by the light emitting diode 20 passes through the concave spherical surface. Entering the lens 30. The curvature of the concave spherical surface is a constant between 0.08 and 0.18 (the unit of all curvatures of the present invention is Ι/mm, the same below), preferably 0.13, which can converge the light of the light-emitting diode 20 in a manner of convergence. It is refracted into the dimming portion 34 of the lens 30. The dimming portion 34 has a convex dome shape. The dimming portion 34 is rotationally symmetrically distributed about the optical axis I, and the outer surface thereof constitutes the light-emitting surface 344 of the lens 30. The maximum diameter of the light exit surface 344, that is, the diameter of the bottom of the light exit surface 344 is larger than the maximum diameter of the light incident surface 342, that is, the diameter of the inner side wall surface 340, to adjust all the light entering the light control portion 34 from the light incident surface 342. Different from the constant curvature of the light incident surface 342, the curvature of the light exit surface 344 changes continuously, and the overall appearance tends to gradually increase from the outer to the inner. Further, the angle of the light extraction surface 344 at any point in the cross section of FIG. 3 is offset from the optical axis I by the connection of the light source axis I of the 098144086 form number A0101 page 5 / 13 page 0982075432-0 201122559 of the wafer 24 of the light emitting diode 20 0. With the change of the 0 angle, the curvature change of the light exit surface 344 can be roughly divided into four sections: in the first section, the light exit surface 344 is at the maximum 0 angle of its relative optical axis (6 in this embodiment). The curvature at the twist is 0.14, and the curvature gradually decreases to a minimum value of 0.13 as the corner angle decreases. In the second stage, as the 0 angle continues to decrease, the curvature of the light surface 344 gradually increases to 〇. .22 ; In the third stage, the curvature of the illuminating surface decreases to 0.20 as the 0 angle decreases; in the fourth stage, as the 0 angle gradually approaches 0 degrees, the curvature of the illuminating surface 344 reappears again, and is in θ. When =0, the maximum value 〇. 24 is reached. As can be seen from the above four stages, since the curvature exhibits wavy undulations, the light exiting surface 344 of the lens 3 has the same curvature at three sides on one side of the optical axis. The angle ranges experienced by the [stage, third stage and fourth stage are all in the range of angles experienced by the second stage, so the curvature of the light-emitting surface 344 tends to increase as the value of the angle decreases. Since the minimum value is equivalent to the curvature of the light incident surface 342, the curvature of the light surface 344 is greater than the curvature of the light incident surface (10). [0012] [0012]
與透鏡30入光面342相比，ψ 光面344更大的曲率可對調 光部34内的光線起到更好的The greater curvature of the pupil face 344 provides better illumination of the light within the dimming portion 34 than the light incident surface 342 of the lens 30.
氟光效果，並且借由上述特 定規律的曲率變化，自出&将 面344出射的光線可被聚隼在 30度的出光角内，從而防*丄 咏J攸取果在 A ^ 先型邊緣發黃或發亮的情況 產生。 综上所述，本發明符合發日日$ +月專利要件，爰依法提出專利 申請。惟，以上所述者僅為 ^ _ *"、本發明之較佳實施例，舉凡 熟悉本案技藝之人士，在桌任丄 本發明精神所作之等效修 飾或變化，皆應涵蓋於以下之由 申清專利範圍内》 【圖式簡單說明】 098144086 表單編號Α0101 第6頁/共13百 Ή 0982075432-0 201122559 [0013] 圖1係本發明的發光組件中的透鏡的立體圖 [0014] 圖2係圖1的倒置圖。 [0015] 圖3係本發明發光組件的剖面圖。 【主要元件符號說明】 [0016] 發光二極體模組：10 [0017] 電路板：12 [0018] 發光二極體：20 〇 [0019] 基座：22 [0020] 晶片.2 4 [0021] 封罩：26 [0022] 透鏡：30 [0023] 底座：32 [0024] 收容槽：320 Ο [0025] 缺口 ： 322 [0026] 調光部：34 [0027] 内侧壁面：340 [0028] 入光面：342 [0029] 出光面：344 [0030] 引腳：36 [0031] 溝槽：360 098144086 表單編號A0101 第7頁/共13頁 0982075432-0 38 201122559 [0032] 内腔 098144086 表單編號A0101 第8頁/共13頁 0982075432-0Fluorescence effect, and by the curvature change of the above specific law, the light emitted from the surface 344 can be concentrated in the exit angle of 30 degrees, thereby preventing the 丄咏J攸A yellowing or shiny edge occurs. In summary, the present invention conforms to the patent requirement of $+month for the date of issue, and submits a patent application according to law. However, the above description is only for the preferred embodiment of the present invention, and those skilled in the art will be able to cover the equivalent modifications or variations of the present invention at the table. [0014] FIG. 1 is a perspective view of a lens in a light-emitting assembly of the present invention [0014] FIG. 2 is a schematic view of a lens in the light-emitting assembly of the present invention. Figure 1 is an inverted view. 3 is a cross-sectional view of a light emitting assembly of the present invention. [Main component symbol description] [0016] LED module: 10 [0017] Circuit board: 12 [0018] Light-emitting diode: 20 〇 [0019] Base: 22 [0020] Wafer. 2 4 [0021 Enclosure: 26 [0022] Lens: 30 [0023] Base: 32 [0024] Storage slot: 320 Ο [0025] Notch: 322 [0026] Dimming: 34 [0027] Inner wall surface: 340 [0028] Glossy: 342 [0029] Light-emitting surface: 344 [0030] Pin: 36 [0031] Groove: 360 098144086 Form number A0101 Page 7 / Total 13 page 0982075432-0 38 201122559 [0032] Inner cavity 098144086 Form number A0101 Page 8 of 13 page 0982075432-0