201122323 六、發明說明： 【發明所屬之技術領威】 [0001]本發明涉及一種發光裝置’特別係指一種發光二極體模 【先前技術】 [0002] 作為一種新興之光源，發光二極體憑藉其發光效率高、 體積小、重量輕、壞保等優點’已被廣泛地應用到當前 之各個領域當中’大有取代傳統光源之趨勢。 [0003] 直接從發光二極艘出射之光線往往木能很好地滿足照明 需求，目前一般採用在發光二極體上加裝透鏡之方式來 對其輸出光型進行調整。根據對光線調節效果之不同， 透鏡又可分為聚光型及散先型兩種。大多數之聚光透鏡 將發光二極體發出之光線會聚成中光束，即峰值光強之 10%處之出光角為45-70度之光束，光束之指向性不強， 不適宜在投射燈等指向性要求較高之燈具史使用。 【發明内容】 [0004] 有鑒於此，實有必要提供一種高指向性之發光二極體元 件。 [0005] —種發光二極體模組，包括一具有一光軸之發光二極體 及一與之搭配之透鏡，該透鏡包括一圍繞所述發光二極 體之入光面、一與該入光面對應之出光面及一連接出光 面與入光面之外側壁面’該外側壁面為自底部至頂部漸 擴之平滑周曲面；該入光面包括一内側壁面和一頂面， 該内侧壁面為自底部至頂部漸縮並與頂面難接之平滑周 曲面，用於將發光二極體出射之光線經透鏡入光面之内 098144090 表單編號A0101 第4頁/共15頁 201122323 側壁面折射後在通過發光二極體光轴之截面内變成平行 光，該平行光經過外側壁面之反射、出光面之折射後平 行射出透鏡。 [0006] Ο [0007] [0008] [0009] [0010] 〇 [0011] 與習知技術相比，本發明發光二極體模組之透鏡將照射 在入光面之内側壁面上之光線在通過發光二極體光軸之 截面内變成平行光，該平行光經過外側壁面之反射、出 光面之折射後平行射出透鏡外，該等平行光被收攏在透 鏡前方之一定角度範圍内，使得經過透鏡調整之光線指 向性高。 所述透鏡之内側壁面之曲率在0-058mm 1之間變化。 所述透鏡之外側壁面之曲率在0. 01~0. 055mm 1之間變化 〇 所述出光面包括一自底部至頂部漸擴之圓錐周面，其錐 角為95度~110度範圍内之任意一值。 . 丨. ,.. ... 與習知技術相比，本發明之發光二極體模組自發光二極 體發出之光線經過透鏡出射之光線在峰值光強10%處之出 光角被調節至28-32度之角度範圍内，透鏡對發光二極體 之聚光率在2. 8〜3. 2之間，使得發光二極體元件具有高指 向性。 【實施方式】 請參閱圖1及圖2，本發明之發光二極體模組包括一發光 二極體組合10及一透鏡20。該發光二極體組合10包括一 發光二極體30及一電路板12。該電路板12用於支撐發光 二極體30，並為其供電。該發光二極體30包括一基座32 098144090 表單編號A0101 第5頁/共15頁 0982075436-0 201122323 、一固定於基座32上之晶片34及一罩住晶片34之封罩36 。該基座32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34通過導熱材料（圖未 示）黏於基座32頂面。該封罩36覆蓋在基座32頂面並將 晶片34與外界隔絕，防止其受到外界環境之影響。封罩 36為圓頂形，以對晶片34發出之光線進行初步調節。該 發光二極體30具有一光軸I，其發出之光線關於該光軸ϊ 旋轉對稱，且光線在峰值光強10%處之出光角在90度之角 度範圍内。 [0012] 請一併參閱圖3 ’透鏡20由透明材質如1¾或PMMA等製成 ’其關於光軸I旋轉對稱。該透鏡20包括一定位部22及一 連接該定位部22之調光部24。該定位部22呈圓盤狀，其 底面開設有一圓形之容置槽220。該容置槽220之口徑及 深度與發光二極體30基座32之直徑及高度大致相等，以 恰好將發光二極體30基座32收容於其中。該定位部22之 底面可通過黏結材料接合於電路板12上，k將透鏡20與 電路板12固接。該透鏡20在其内部形成一與容置槽220連 通之内腔240，以收容發光二極體3〇之封罩36。該内腔 240之内侧壁面202為向發光二極體30封罩36凸出之平滑 周曲面，其限定内腔240之口徑自下至上逐漸減小。該内 側壁面202之各點曲率在〇. 〇5~〇. 8 mnf1之間變化。該内 腔240之頂面201為平面，其正對於發光二極體30。該内 腔240之内側壁面202及頂面201共同形成透鏡20之入光 面200 ’自發光二極體3〇封罩36出射之光線（如圖2中之 光線a)經内腔240之内側壁面202折射後在過光軸I之任 098144090 表單編號A0101 第6頁/共15頁 0982075436-0 201122323 意截面内以平行光射入透鏡2〇之調光部24之周緣區域， 自發光二極體30封罩36出射之光線（如圖2中之光線b)經 内腔240之頂面2〇1折射入透鏡2〇調光部24之中部區域。 [0013]該透鏡2〇調光部24之外侧壁面203為一自下至上漸擴之平 滑周曲面’該外侧壁面2〇3各點曲率在〇. 〇卜〇 〇55mm-i 之間變化。該調光部24之頂面為該透鏡20之出光面206。 該外側壁面203之頂緣直接與透鏡2〇之出光面2〇6連接， 其底緣通過透鏡20之底面及容置槽220之内侧壁面與透鏡 〇 20之入光面200間接連接-讓調光部24之出光面206由一 圓錐周面208、一連接該圓錐周面&底緣並向上凸起 之中間曲面207及一由該圓錐周面208之頂緣:向外延伸而 成之圓弧面209共同形成。該圓_肩面208之開口自上至 下逐漸減小（即自底部至頂部漸擴）。該圓錐周面208之 錐角為95度〜110度範圍内之任意一值，在本實施例中為 104度，還可為103度。該圓弧面209之曲率為1. 5min_1 » 該中間曲面207正對於發光二極體30，其包括一位於中部 〇 區域之曲率變化幅度較小而大致接近零之第一曲面204及 一連接該第一曲面204和圓錐周^208底緣之過渡曲面 205。該過渡曲面205為一平滑周曲面，其上各點曲率在 〇~1. 4丽_1之間變化，但不包括〇mm_1。該中間曲面207 之高度小於圓錐周面208之高度，且其第一曲面204之面 積小於内腔240頂面201之面積。該中間埤面207主要用 於對經入光面200之頂面201折射之光線進行調節’圓錐 周面208及圓弧面209主要用於對經透鏡20外側壁面203 反射之光線進行調節。 098144090 表單編號A0101 第7頁/共15頁 0982075436-0 201122323 [0014] 經由上述入光面200、出光面2〇6及外側壁面203之共同 作用，自透鏡20出射之光線在峰值光強1〇%處之出光角可 被調節至28-32度之角度範圍内，優選為3〇度。相比於發 光二極體30發出之光線在峰值光強1〇%處之9〇度之出光角 ，經透鏡20調整後之輸出光線在峰值光強1〇%處之出光角 被縮小了1/3左右，透鏡20對發光二極體30之聚光率在 2. 8~3. 2之間（聚光率=發光二極體輸出光線在峰值光強 10%處之出光角/透鏡輸出光線在峰值光強1〇%處之出光角 )° [0015] 本文所稱曲率均是指以圖2之截面為墓礎進行測算之，即 疋說，上述各曲率均是指圖2之過光軸〖之裁面内之曲率 o :1¾¾¾ , ιί#.ί [ooie] 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隹實施例，舉凡 熟悉本案技藝之人士，在爰依本發明精神卞作之等效修 飾或變化，皆應涵蓋於以下之申請專巧範圍内v。 少 【圖式簡單說明】 [0017] 下面參照附圖，結合具體實施例對本發明作進— 艾之描 述。 [0018] 圖1係本發明之發光二極體模組中之透鏡之立體圖。 [0019] 圖2係圖1之本發明發光二極體模組之剖視圖。 [0020] 圖3係圖1之倒置圖。 【主要元件符號說明】 [0021] 發光二極體組合：1〇 098144090 表單編號A0101 第8頁/共15頁 0982075436-0 201122323 [0022] 電路板：12 [0023] 發光二極體：30 [0024] 基座：32 [0025] 晶片· 3 4 ' [0026] 封罩：36 [0027] 入光面：200 [0028] 〇 頂面：201 [0029] 内侧壁面：202 [0030] 外側壁面：203 [0031] 第一曲面：204 [0032] 過渡曲面：2 0 5 [0033] 出光面：2 0 6 '丨 ❹ [0034] 中間曲面：207 [0035] .....--¾ 圓錐周面：208 [0036] 圓弧面：209 [0037] 透鏡：20 [0038] 定位部：22 [0039] 調光部：24 [0040] 容置槽：220 098144090 表單編號A0101 第9頁/共15頁 0982075436-0 201122323 [0041] 内腔：240 [0042] 光線：a、b201122323 VI. Description of the Invention: [Technical Leadership of the Invention] [0001] The present invention relates to a light-emitting device 'in particular to a light-emitting diode mold [Prior Art] [0002] As an emerging light source, a light-emitting diode With its high luminous efficiency, small size, light weight, and poor protection, it has been widely used in various fields. It has a tendency to replace traditional light sources. [0003] The light that is directly emitted from the light-emitting diodes can often meet the lighting requirements. At present, the output light pattern is generally adjusted by adding a lens to the light-emitting diode. Depending on the effect of light adjustment, the lens can be divided into two types: concentrating type and scattered type. Most of the concentrating lenses concentrate the light emitted by the illuminating diode into a medium beam, that is, a beam having an exit angle of 45-70 degrees at 10% of the peak intensity. The directivity of the beam is not strong, and it is not suitable for the projection lamp. The history of lamps with higher requirements for directionality is used. SUMMARY OF THE INVENTION [0004] In view of the above, it is necessary to provide a highly directional light-emitting diode element. [0005] A light-emitting diode module includes a light-emitting diode having an optical axis and a lens matched thereto, the lens including a light-incident surface surrounding the light-emitting diode, and a light-emitting surface corresponding to the light-incident surface and a side wall surface connecting the light-emitting surface and the light-incident surface. The outer wall surface is a smooth circumferential curved surface which is gradually expanded from the bottom to the top; the light-incident surface includes an inner side wall surface and a top surface, the inner side The wall surface is a smooth circumferential surface that tapers from the bottom to the top and is difficult to connect with the top surface, and is used to illuminate the light emitted from the LED through the lens into the glossy surface. 098144090 Form No. A0101 Page 4 of 15 201122323 Side wall surface After being refracted, it becomes parallel light in the cross section passing through the optical axis of the light-emitting diode, and the parallel light is reflected by the outer wall surface and refracted by the light-emitting surface, and then exits the lens in parallel. [0006] [0010] [0011] Compared with the prior art, the lens of the light-emitting diode module of the present invention will illuminate the light on the inner side wall surface of the light incident surface. Through the cross section of the optical axis of the light-emitting diode, it becomes parallel light, and the parallel light is reflected by the outer wall surface and refracted by the light-emitting surface, and then is emitted out of the lens in parallel, and the parallel light is gathered in a certain angle range in front of the lens, so that The lens is adjusted to have high light directivity. The curvature of the inner wall surface of the lens varies between 0-058 mm 1 . The curvature of the outer wall surface of the lens is between 0.01 and 0. 055 mm. The light exit surface comprises a conical surface extending from the bottom to the top, and the taper angle is in the range of 95 to 110 degrees. Any value.丨. ,.. ... Compared with the prior art, the light emitted from the light-emitting diode of the light-emitting diode module of the present invention is adjusted by the light exiting the lens at a peak light intensity of 10%. The light-emitting diode has a high directivity. The light-emitting diode element has a high directivity in the range of 2.8 to 3.2. [Embodiment] Referring to FIG. 1 and FIG. 2, the LED module of the present invention comprises a light emitting diode assembly 10 and a lens 20. The LED assembly 10 includes a light emitting diode 30 and a circuit board 12. The circuit board 12 is for supporting and supplying power to the light-emitting diodes 30. The light-emitting diode 30 includes a base 32 098144090, a form number A0101, a fifth page, a total of 15 pages, 0982075436-0, 201122323, a wafer 34 fixed to the base 32, and a cover 36 covering the wafer 34. The base 32 is rectangular in shape and may be made of a heat insulating material such as plastic or a heat conductive material such as ceramic. The wafer 34 is adhered to the top surface of the susceptor 32 by a thermally conductive material (not shown). The cover 36 covers the top surface of the base 32 and isolates the wafer 34 from the outside to prevent it from being affected by the external environment. The enclosure 36 is dome shaped to provide a preliminary adjustment of the light emitted by the wafer 34. The light-emitting diode 30 has an optical axis I, and the emitted light is rotationally symmetric about the optical axis ,, and the light exiting angle at a peak intensity of 10% is in the range of 90 degrees. [0012] Please refer to FIG. 3 together. The lens 20 is made of a transparent material such as PTFE or PMMA, which is rotationally symmetric about the optical axis I. The lens 20 includes a positioning portion 22 and a dimming portion 24 connected to the positioning portion 22. The positioning portion 22 has a disk shape, and a circular receiving groove 220 is defined in a bottom surface thereof. The diameter and depth of the accommodating groove 220 are substantially equal to the diameter and height of the pedestal 32 of the illuminating diode 30, so that the pedestal 32 of the illuminating diode 30 is received therein. The bottom surface of the positioning portion 22 can be bonded to the circuit board 12 by a bonding material, and the lens 20 is fixed to the circuit board 12. The lens 20 has an inner cavity 240 connected to the accommodating groove 220 to receive the cover 36 of the light-emitting diode 3. The inner side wall surface 202 of the inner cavity 240 is a smooth circumferential curved surface that protrudes toward the light-emitting diode 30, and the diameter of the inner cavity 240 is gradually reduced from bottom to top. The curvature of each point of the inner wall surface 202 varies between 〇. 〇5~〇. 8 mnf1. The top surface 201 of the inner cavity 240 is planar and is directed to the light emitting diode 30. The inner wall surface 202 and the top surface 201 of the inner cavity 240 together form the light incident surface 200 of the lens 20. The light emitted from the light emitting diode 3 (the light beam a in FIG. 2) passes through the inner side of the inner cavity 240. After the wall surface 202 is refracted, it is 098144090 on the optical axis I. Form No. A0101 Page 6 / Total 15 page 0982075436-0 201122323 The parallel light is incident into the peripheral region of the dimming portion 24 of the lens 2〇 in the cross section, self-illuminating dipole The light emitted by the body 30 cover 36 (such as the light b in FIG. 2) is refracted into the middle portion of the lens 2 〇 dimming portion 24 via the top surface 2〇1 of the inner cavity 240. [0013] The outer side wall surface 203 of the lens 2 〇 dimming portion 24 is a smoothing curved surface from the bottom to the top. The curvature of each of the outer side wall surfaces 2 〇 3 varies between 〇. 〇 〇 〇 55 mm-i. The top surface of the light control portion 24 is the light exit surface 206 of the lens 20. The top edge of the outer wall surface 203 is directly connected to the light-emitting surface 2〇6 of the lens 2, and the bottom edge thereof is indirectly connected to the light-emitting surface 200 of the lens 通过20 through the bottom surface of the lens 20 and the inner wall surface of the accommodating groove 220. The light exiting surface 206 of the light portion 24 is formed by a conical circumferential surface 208, an intermediate curved surface 207 connecting the conical circumferential surface & the bottom edge and upwardly convex, and a top edge extending from the conical peripheral surface 208: The arcuate faces 209 are formed together. The opening of the circle _ shoulder surface 208 gradually decreases from top to bottom (i.e., diverges from bottom to top). The taper angle of the conical circumferential surface 208 is any value in the range of 95 to 110 degrees, and is 104 degrees in this embodiment, and may be 103 degrees. The curvature of the circular arc surface 209 is 1. 5min_1 » The intermediate curved surface 207 is opposite to the light-emitting diode 30, and includes a first curved surface 204 having a small curvature variation in the central temporal region and substantially close to zero, and a connection The first curved surface 204 and the transition surface 205 of the bottom edge of the conical surface 208. The transition surface 205 is a smooth circumferential surface, and the curvature of each point on the point varies between 〇~1. 4 丽_1, but does not include 〇mm_1. The height of the intermediate curved surface 207 is less than the height of the conical circumferential surface 208, and the area of the first curved surface 204 is smaller than the area of the top surface 201 of the inner cavity 240. The intermediate surface 207 is mainly used to adjust the light refracted by the top surface 201 of the light incident surface 200. The conical surface 208 and the circular surface 209 are mainly used to adjust the light reflected by the outer wall surface 203 of the lens 20. 098144090 Form No. A0101 Page 7 of 15 0982075436-0 201122323 [0014] Through the interaction of the light-incident surface 200, the light-emitting surface 2〇6 and the outer wall surface 203, the light emitted from the lens 20 is at a peak intensity of 1〇. The exit angle at % can be adjusted to an angle of 28-32 degrees, preferably 3 degrees. Compared with the exit angle of 9 〇 of the light emitted by the light-emitting diode 30 at a peak intensity of 1〇%, the output angle of the output light adjusted by the lens 20 is reduced by 1% at the peak light intensity of 1〇%. /3 or so, the concentrating ratio of the lens 20 to the light-emitting diode 30 is between 2. 8 and 3.2 (concentration ratio = light-emitting angle of the output light of the light-emitting diode at 10% of the peak light intensity / lens output The angle of light at the peak intensity of 1〇%) ° [0015] The curvature referred to in this paper refers to the section of Figure 2 as the basis of the tomb, that is, the above curvature refers to Figure 2 The optical axis 〖the curvature in the face o: 13⁄43⁄43⁄4 , ιί#. ί [ooie] In summary, the invention meets the requirements of the invention patent, and patent application is filed according to law. However, the above-mentioned embodiments are only the preferred embodiments of the present invention, and those skilled in the art will be able to cover the modifications and variations of the present invention within the scope of the application. BRIEF DESCRIPTION OF THE DRAWINGS [0017] The present invention will now be described in conjunction with the specific embodiments with reference to the accompanying drawings. 1 is a perspective view of a lens in a light emitting diode module of the present invention. 2 is a cross-sectional view of the light emitting diode module of the present invention of FIG. 1. 3 is an inverted view of FIG. 1. [Description of main component symbols] [0021] LED combination: 1〇098144090 Form No. A0101 Page 8 of 15 0982075436-0 201122323 [0022] Circuit board: 12 [0023] Light-emitting diode: 30 [0024] Substrate: 32 [0025] Wafer · 3 4 ' [0026] Enclosure: 36 [0027] Glowing surface: 200 [0028] Crest surface: 201 [0029] Inner side wall surface: 202 [0030] Outer side wall surface: 203 [0031] First curved surface: 204 [0032] Transition surface: 2 0 5 [0033] Light-emitting surface: 2 0 6 '丨❹ [0034] Intermediate curved surface: 207 [0035] .....--3⁄4 Conical circumferential surface :208 [0036] Arc surface: 209 [0037] Lens: 20 [0038] Positioning section: 22 [0039] Dimming section: 24 [0040] accommodating slot: 220 098144090 Form No. A0101 Page 9 of 15 0982075436-0 201122323 [0041] Inner cavity: 240 [0042] Light: a, b
098144090 表單編號A0101 第10頁/共15頁 0982075436-0098144090 Form No. A0101 Page 10 of 15 0982075436-0