201126111 六、發明說明： 【發明所屬之技術領威】 [0001]本發明涉及一種光學元件及發光模組’特別係指一種透 鏡及應用該透鏡的發光二極體模組。 【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，大有取代習知光源的趨勢。 [0003] 目前應用發光二極體的燈具的設計難點在於二次光學設 〇 計。目前常見的使用聚光透鏡的聚光型照明燈具，其照 射圖案的亮度不均，出現明暗相間的現象。這種亮度不 均的光照多有使人不適，容易引起人的視覺疲勞。如何 使發光二極體燈具提供視覺舒適的照明敦果，直接關係 到其在各照明場合的適用程度，是其應用推廣的很重要的 因素，因此，業者對此問題多有關注。 【發明内容】 U [〇〇〇4]有繁於此，有必要提供一種具有良好光照效果的發光二 極體模組及其透鏡。 [〇〇〇5] 一種透鏡，用於導控發光二極體發出的光線，該透鏡包 括凸透鏡部分及形成於凸透鏡部分的外周的導光部分， 凸透鏡部分包括1 —人射面及與H面背向的第 -出射面’導光部分包括與第一人射面銜接的第二入射 面、位於導光部分外周的全反射面及與凸透鏡部分的第 -出射面朝向相同的第二出射面，第一入射面與第二入 射面形成-凹A腔室，凸透鏡部分和導光 099101987 表單編號 A01〇l ^ 201126111 極體的光線向發光二極體的光軸方嚮導引。 [0006] 一種發光二極體模組，包括發光二極體及與其搭配的透 鏡，該透鏡包括正對發光二極體的凸透鏡部分及形成於 凸透鏡部分的外周的導光部分，凸透鏡部分包括朝向發 光二極體凸出的一第一入射面及背向發光二極體凸出的 一第一出射面，導光部分包括圍設發光二極體而與第一 入射面銜接的第二入射面、位於導光部分外周的全反射 面及與凸透鏡部分的第一出射面朝向相同的第二出射面 ，第一入射面與第二入射面形成一供發光二極體置入的 凹入腔室，凸透鏡部分和導光部分將發光二極體的光線 向發光二極體的光軸方嚮導引。 [0007] 與習知技術相比，本發明發光二極體模組中的透鏡採用 凸透鏡部分與外周的導光部分相互配合的方式調節發光 二極體發出的光線，可調整經過透鏡的大角度光線偏向 光軸方向，使發光二極體的光線收攏，易於調控其指向 性出光性能，產生使人舒適的光照效果。 【實施方式】 [0008] 請參閱圖1-3，本發明一實施例中的發光二極體模組包括 一發光二極體10及罩設在發光二極體10上的一透鏡20。 發光二極體10具有一光軸I。透鏡20包括正對發光二極體 10的凸透鏡部分22及形成於凸透鏡部分22的外周的導光 部分24。凸透鏡部分22包括朝向發光二極體10凸出的一 第一入射面221及背向發光二極體10凸出的一第一出射面 223。導光部分24包括圍設發光二極體10的第二入射面 241及位於導光部分外周的全反射面242。凸透鏡部分22 099101987 表單編號A0101 第4頁/共16頁 0992003875-0 201126111 [0009] [0010] Ο [0011] 〇 [0012] 和導光部分24均可將發光二 嚮導引。 發^極體1G可通過表岭^方式^在電路板12上 1〇二不同的先照需求’可採用不同功率的發光二極體 二二極㈣包括基座1qi、固定 先一極體晶片102及罩置所n 土幻〇1上的發 封裝體103。 ㈣晶片102的透明 透知20由光學性紐的透明 咖，，一編“上:=： 本實施例中， ㈣除凸透鏡邹=== = :”央位置’但 中央位置。透〇中實施在透鏡20的非 轉對稱體，並具:Γ:透鏡部分22和導光部分24均為旋 設在發光二極趙稱轴。優選地’將透鏡20罩 透鏡部分22 ,上’ Τ使發光二極體1〇的光軸I與凸 導光部分24的對稱軸重合。 凸透鏡部分 些實施例中其的第一入射面221優選地為-球面，且在-為—非其曲率可為u-—1。第-出射面223優選地 施例中的第1嗜同時參考圖4，圖中的曲線示出了一些實 224，也g出射面223從頂端225，也即中央，到底端 出射面2Γ周緣的曲率變化趨勢。其中，横坐標表示第一 位置，了在圖3中的截線上從頂端225到底端224的各個 坐標表=端225的橫坐標為〇，底端224的橫坐標為1，縱 不曲率值。可以看出，沿著從頂端225到底端224 極體10發出的光偏向光軸i方 099101987 表單編號Α〇ΐ〇ι201126111 VI. Description of the Invention: [Technical Leadership of the Invention] [0001] The present invention relates to an optical component and a light-emitting module ‘, particularly to a lens and a light-emitting diode module using the same. [Previous 彳 · · · [0002] As an emerging light source 'light-emitting diodes with its high luminous efficiency, small size, light weight, environmental protection, etc.' has been widely used in various fields, Replace the trend of conventional light sources. [0003] At present, the design difficulty of a lamp using a light-emitting diode is a secondary optical device. At present, a concentrating type illuminating lamp using a concentrating lens has an uneven brightness of an illuminating pattern, and a phenomenon of light and dark appears. This uneven illumination is often uncomfortable and can cause visual fatigue. How to make the light-emitting diode lamps provide visually comfortable lighting, which is directly related to its applicability in various lighting occasions, is an important factor in its application promotion. Therefore, the industry pays more attention to this issue. SUMMARY OF THE INVENTION U [〇〇〇4] is versatile, and it is necessary to provide a light-emitting diode module having a good illumination effect and a lens thereof. [〇〇〇5] A lens for guiding light emitted from a light emitting diode, the lens comprising a convex lens portion and a light guiding portion formed on an outer circumference of the convex lens portion, the convex lens portion including 1 - a human face and a H face The back-facing first exit surface 'light guiding portion includes a second incident surface that is coupled to the first human emitting surface, a total reflecting surface located on the outer periphery of the light guiding portion, and a second exit surface that is oriented the same as the first-exit surface of the convex lens portion The first incident surface and the second incident surface form a concave A chamber, a convex lens portion and a light guide 099101987 Form No. A01〇l ^ 201126111 The light of the polar body is guided toward the optical axis of the light emitting diode. [0006] A light emitting diode module comprising a light emitting diode and a lens matched therewith, the lens comprising a convex lens portion facing the light emitting diode and a light guiding portion formed on an outer circumference of the convex lens portion, the convex lens portion including the lens a first incident surface protruding from the light emitting diode and a first exit surface protruding away from the light emitting diode, the light guiding portion comprising a second incident surface enclosing the light emitting diode and engaging the first incident surface a total reflection surface located on the outer circumference of the light guiding portion and a second exit surface facing the first exit surface of the convex lens portion, the first incident surface and the second incident surface forming a concave chamber into which the light emitting diode is placed The convex lens portion and the light guiding portion guide the light of the light emitting diode to the optical axis direction of the light emitting diode. Compared with the prior art, the lens in the light-emitting diode module of the present invention adjusts the light emitted by the light-emitting diode by using the convex lens portion and the light guiding portion of the outer circumference to adjust the large angle passing through the lens. The light is deflected toward the optical axis, so that the light of the light-emitting diode is gathered, and it is easy to adjust its directional light-emitting performance, resulting in a comfortable lighting effect. [0008] Referring to FIG. 1-3, a light-emitting diode module according to an embodiment of the invention includes a light-emitting diode 10 and a lens 20 disposed on the light-emitting diode 10. The light-emitting diode 10 has an optical axis I. The lens 20 includes a convex lens portion 22 facing the light emitting diode 10 and a light guiding portion 24 formed on the outer circumference of the convex lens portion 22. The convex lens portion 22 includes a first incident surface 221 protruding toward the light emitting diode 10 and a first exit surface 223 protruding toward the light emitting diode 10. The light guiding portion 24 includes a second incident surface 241 surrounding the light emitting diode 10 and a total reflection surface 242 located on the outer periphery of the light guiding portion. Convex lens portion 22 099101987 Form No. A0101 Page 4 of 16 0992003875-0 201126111 [0009] [0010] 〇 [0012] and the light guiding portion 24 can both guide the light in two directions. The emitter body 1G can be used on the circuit board 12 by means of a bipolar ^ method ^ two different first-light requirements 'different power LED dipoles (four) including a base 1qi, a fixed first-pole wafer 102 and the cover package 103 on the cover 土1. (4) The transparentness of the wafer 102 is transparent to the optical coffee, and is edited as "Top:=: In this embodiment, (4) In addition to the convex lens Zou === = : "central position" but the central position. The non-transformed body of the lens 20 is implemented in the lens, and the lens portion 22 and the light guiding portion 24 are both disposed on the illuminating dipole. Preferably, the lens 20 is covered by the lens portion 22, and the upper axis 重 causes the optical axis I of the light-emitting diode 1〇 to coincide with the axis of symmetry of the convex light guiding portion 24. The first incident surface 221 of the lenticular lens portion in some embodiments is preferably - spherical, and - is - non-curvature may be u - -1. The first-exit surface 223 is preferably the first one in the embodiment. Referring to FIG. 4 at the same time, the curve in the figure shows some real 224, and also the exit surface 223 from the top end 225, that is, the center, and the bottom end of the exit surface 2 Curvature change trend. Here, the abscissa indicates the first position, and the abscissa from the top end 225 to the bottom end 224 of the cross-sectional line in Fig. 3 has an abscissa of 〇, and the bottom end 224 has an abscissa of 1, and the longitudinal non-curvature value. It can be seen that the light emitted from the top end 225 to the bottom end 224 of the polar body 10 is biased toward the optical axis i. 099101987 Form number Α〇ΐ〇ι
第5 1/共16 I 0992003875-0 201126111 的方向，第一出射面223的曲率先逐漸增大然後逐漸減小 ，再逐漸增大，形成一個大致呈N形的變化趨勢。頂端 225處的曲率最小，為0.0083mm_1，底端224處的曲率最 大，為0.1964mm 1。 [0013] 第一入射面2 21在水平面上的投影的直徑小於第一出射面 223在水平面上的投影的直徑，且第一出射面223的底端 224所在的水平面低於第一入射面221上的任一位置所在 的水平面，也即第一入射面221的底端，即中央，高於第 一出射面223的底端224。 [0014] 導光部分24的外形整體大致呈一倒置的圓臺狀，即圓臺 的大端朝上，小端朝下。導光部分24中空並設凸透鏡部 分22於其内。導光部分24的底部、凸透鏡部分22的下方 形成一容置發光二極體10的凹入腔室25。導光部分24底 部的内侧面即為所述第二入射面241，該第二入射面241 與凸透鏡部分22的第一入射面221相銜接，凹入腔室25即 由第二入射面241與第一入射面221共同圍設而成。第二 入射面241優選地為一圓柱面 [0015] 導光部分24的外側面即為全反射面242，該全反射面242 為一錐面。導光部分24還包括位於其頂部的一呈平坦圓 環狀的第二出射面243及與第二出射面243垂直的第三入 射面246。凸透鏡部分22的第一出射面223的頂端高於該 第二出射面243。凸透鏡部分22的第一入射面221、第一 出射面22 3及導光部分24的第二出射面243之間設置成上 述具體位置關係，可使透鏡20的結構緊湊，體積減小。 099101987 表單編號A0101 第6頁/共16頁 0992003875-0 201126111 [0016] [0017] Ο ❹ [0018] 該第三人射面246即為導光部分24頂部的内侧面。第三入 射面m為—内圓柱面’並將第一出射面和第二出射 面243相連。 發光一極體10發出的光線穿設透鏡20後，95%的光線集中 在偏離光的30度範圍内，即光線經過透鏡2()後的出光 角大致為60度。光線的偏離角度在大約20-25度時，其光 強開始急劇下降。自發光二極體1〇以小角度（小於或等於 40度）出射的光線（如圖3中的光線a)經凸透鏡部分22的 第一入射面221和第一出射面223兩次折射後，以更加偏 向光袖I的角度射出。第一出射面223的曲率存在上述的 變化趨勢，並在其底端224具有最大的曲率，可使發光二 極體10出射角度相對較大的光線更有效的偏向光軸I。自 發光二極體1〇以大角度（大於4〇度）出射的光線（如圖3中 的光線b)先經導光部分24的第二入射面241折射，然後 經全反射面242反射，再經第二出射面243折射，也以更 加偏向光軸I的角度射出。與經過凸透鏡部分22的光線相 f '，Ί ΐ J Γ -— U 比’經過導光部分2 4的光線的出射角改變程度更大。由 於僅有少部分光線經過凸透鏡部分22的第一出射面223後 再進入導光部分24的第三入射面246，因此第三入射面 246對整體發光二極體模組的出光效果影響小。 經過電腦軟體測試後’上述發光二極體模組形成的照射 區域内其照度分佈從中心到週邊逐漸減小，均勻變化， 其均勻度得到有效的提升。與傳統的發光二極體模組形 成的照射區域相比’該照射區域不存在明暗相間的光照 ，因而產生了更適合照明的光照效果。 099101987 表單編號A0101 第7頁/共16頁 0992003875-0 201126111 [0019] 本發明上述實施例中的大角度及小角度是以40度為界限 進行劃分的，應當指出，該40度不應理解為是對大角度 及小角度的範圍所作出的限定，其僅是一個具體的實施 方式。實際上，在20〜45度範圍内的任何角度都可作為 劃分大角度及小角度的界限。 [0020] 另，本文所稱曲率均是指以圖3的截面為基礎進行測算的 ，即是說，上述各曲率均是指圖3的截面内的曲率。可以 理解地，各曲率數值均可以為導光效果而做出合理性調 整。 [0021] 上述實施例中的發光二極體模組其透鏡20可根據電路板 12上的發光二極體10的數量和排布方式作不同變更，例 如，可以排列成矩陣、圓形、線性等不同狀態。為方便 定位及固定透鏡20，可於導光部分24的袅部朝向發光二 極體10的方向凸設一對固定腳26，該固定腳26可卡設於 發光二極體10的週邊。此外，還可於導光部分24的頂部 外侧緣環設一固定槽27，用於將壓板等元件設置在透鏡 20的頂部。 [0022] 综上所述，本發明符合發明專利要件，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，在爰依本發明精神所作之等效修 飾或變化，皆應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 [0023] 圖1為本發明一實施例的發光二極體模組中的透鏡的立體 示意圖。 099101987 表單編號A0101 第8頁/共16頁 0992003875-0 201126111 [0024] 圖2為圖1中的透鏡的另一視角的立體示意圖。 '[0025] 圖3為本發明一實施例的發光二極體模組的剖示示意圖 [0026] 圖4為本發明一實施例中的透鏡的第一出射面的曲率變化 圖。 【主要元件符號說明】 〇 [0027] 發光二極體： 10 [0028] 基座：101 [0029] 發光二極體晶片：102 [0030] 封裝體：103 [0031] 電路板：12 [0032] 透鏡：20 [0033] 凸透鏡部分： 22 [0034] 第一入射面： 221 [0035] 第一出射面： 223 [0036] 底端：224 [0037] 頂端：225 [0038] 導光部分：24 [0039] 第二入射面： 241 [0040] 全反射面：242 [0041] 第二出射面： 243 表單編號A0101 099101987 第9頁/共16頁 0992003875-0 201126111 [0042] 第三入射面：246 [0043] 凹入腔室：2 5 [0044} 固定腳：2 6 [0045] 固定槽：2 7 099101987 表單編號A0101 第10頁/共16頁 0992003875-0In the direction of the 5th/16th I 0992003875-0 201126111, the curvature of the first exit surface 223 first increases gradually and then gradually decreases, and then gradually increases to form a substantially N-shaped change trend. The curvature at the tip 225 is the smallest at 0.0083 mm _1 and the curvature at the bottom end 224 is the largest at 0.1964 mm 1 . [0013] The diameter of the projection of the first incident surface 21 on the horizontal plane is smaller than the diameter of the projection of the first exit surface 223 on the horizontal plane, and the horizontal plane of the bottom end 224 of the first exit surface 223 is lower than the first incident surface 221 The horizontal plane at any of the upper positions, that is, the bottom end of the first incident surface 221, that is, the center, is higher than the bottom end 224 of the first exit surface 223. [0014] The overall shape of the light guiding portion 24 is substantially in the shape of an inverted truncated cone, that is, the large end of the truncated cone faces upward and the small end faces downward. The light guiding portion 24 is hollow and has a convex lens portion 22 therein. The bottom of the light guiding portion 24 and the lower portion of the convex lens portion 22 form a concave chamber 25 for accommodating the light emitting diode 10. The inner side surface of the bottom of the light guiding portion 24 is the second incident surface 241, and the second incident surface 241 is engaged with the first incident surface 221 of the convex lens portion 22, and the concave chamber 25 is the second incident surface 241 and The first incident faces 221 are enclosed together. The second incident surface 241 is preferably a cylindrical surface. [0015] The outer side surface of the light guiding portion 24 is a total reflection surface 242, and the total reflection surface 242 is a tapered surface. The light guiding portion 24 further includes a second annular emitting surface 243 at the top thereof and a third incident surface 246 perpendicular to the second exit surface 243. The tip end of the first exit surface 223 of the convex lens portion 22 is higher than the second exit surface 243. The first incident surface 221 of the convex lens portion 22, the first exit surface 22, and the second exit surface 243 of the light guiding portion 24 are disposed in the above specific positional relationship, so that the lens 20 can be compact in structure and reduced in volume. 099101987 Form No. A0101 Page 6 of 16 0992003875-0 201126111 [0017] [0017] The third person's face 246 is the inner side of the top of the light guiding portion 24. The third entrance face m is an inner cylindrical face and connects the first exit face and the second exit face 243. After the light emitted from the light-emitting body 10 passes through the lens 20, 95% of the light is concentrated within a range of 30 degrees from the light, that is, the light exiting the lens 2() is approximately 60 degrees. When the angle of deviation of the light is about 20-25 degrees, its light intensity begins to drop sharply. The light emitted from the self-luminous diode 1 at a small angle (less than or equal to 40 degrees) (such as the light a in FIG. 3) is twice refracted by the first incident surface 221 and the first exit surface 223 of the convex lens portion 22, Shot at an angle that is more biased toward the sleeve I. The curvature of the first exit surface 223 has the above-described tendency to change, and has a maximum curvature at the bottom end 224 thereof, so that the light having a relatively large exit angle of the light-emitting diode 10 can be more effectively deflected toward the optical axis I. The light emitted from the self-luminous diode 1 at a large angle (greater than 4 degrees) (such as the light b in FIG. 3) is first refracted by the second incident surface 241 of the light guiding portion 24, and then reflected by the total reflection surface 242. Further, it is refracted by the second exit surface 243, and is also emitted at an angle more toward the optical axis I. The angle of incidence of the light passing through the light guiding portion 24 is more varied with the light passing through the convex lens portion 22 f ', Ί ΐ J Γ - - U ratio. Since only a small portion of the light passes through the first exit surface 223 of the convex lens portion 22 and then enters the third incident surface 246 of the light guiding portion 24, the third incident surface 246 has little effect on the light-emitting effect of the overall light-emitting diode module. After the computer software test, the illuminance distribution in the illumination area formed by the above-mentioned light-emitting diode module gradually decreases from the center to the periphery, and the uniformity is effectively improved. Compared with the illumination area formed by the conventional light-emitting diode module, the illumination area does not have light and dark illumination, thus producing a lighting effect more suitable for illumination. 099101987 Form No. A0101 Page 7 / Total 16 Pages 0992003875-0 201126111 [0019] The large angle and the small angle in the above embodiment of the present invention are divided by 40 degrees. It should be noted that the 40 degrees should not be understood as It is a limitation on the range of large angles and small angles, which is only a specific embodiment. In fact, any angle in the range of 20 to 45 degrees can be used as a boundary for dividing large angles and small angles. [0020] In addition, the term "curvature" as used herein refers to the measurement based on the section of FIG. 3, that is, each of the above curvatures refers to the curvature in the section of FIG. It can be understood that each curvature value can be rationally adjusted for the light guiding effect. [0021] The lens 20 of the LED module of the above embodiment may be modified according to the number and arrangement of the LEDs 10 on the circuit board 12, for example, may be arranged in a matrix, a circle, or a linear line. Wait for different states. In order to facilitate the positioning and fixing of the lens 20, a pair of fixing legs 26 may be protruded from the crotch portion of the light guiding portion 24 toward the light emitting diode 10, and the fixing legs 26 may be attached to the periphery of the light emitting diode 10. Further, a fixing groove 27 may be formed in the top outer edge of the light guiding portion 24 for arranging elements such as a pressure plate on the top of the lens 20. [0022] In summary, the present invention complies with the requirements of the invention patent, and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0023] FIG. 1 is a perspective view of a lens in a light emitting diode module according to an embodiment of the present invention. 099101987 Form No. A0101 Page 8 of 16 0992003875-0 201126111 [0024] FIG. 2 is a perspective view of another perspective of the lens of FIG. 1. 3 is a schematic cross-sectional view of a light emitting diode module according to an embodiment of the present invention. [0026] FIG. 4 is a view showing a curvature change of a first exit surface of a lens according to an embodiment of the present invention. [Description of Main Component Symbols] 〇[0027] Light Emitting Diode: 10 [0028] Base: 101 [0029] Light Emitting Diode Wafer: 102 [0030] Package: 103 [0031] Circuit Board: 12 [0032] Lens: 20 [0033] Convex lens portion: 22 [0034] First incident surface: 221 [0035] First exit surface: 223 [0036] Bottom end: 224 [0037] Top: 225 [0038] Light guide portion: 24 [ 0039] Second incident surface: 241 [0040] Total reflection surface: 242 [0041] Second exit surface: 243 Form No. A0101 099101987 Page 9/16 pages 0992003875-0 201126111 [0042] Third incident surface: 246 [ 0043] Recessed chamber: 2 5 [0044} Fixed foot: 2 6 [0045] Fixed slot: 2 7 099101987 Form number A0101 Page 10 / Total 16 pages 0992003875-0