201001691 九、發明說明： 【發明所屬之技術領域】 本發明涉及光學技術領域，尤其涉及一種發光二極體 光源模組。 【先前技術】 發光二極體（Light Emitting Diode，LED)因具有功耗 低、壽命長、體積小及亮度高等特性已經被廣泛應用到很 多領域。於此，一種新型發光二極體可參見Daniel A. Steigerwald 等人於文獻 IEEE Journal on Selected Topics in Quantum Electronics, Vol. 8, No. 2, March/April 2002 中之 Illumination With Solid State Lighting Technology —文。 發光二極體可應用於光源模組，例如路燈。發光二極 體之出光角度一般為90度至120度，其中央（出光角約為 0度至30度）之光線強度較強，周圍之光線強度較弱，導 致整個光源模組之出光不均勻，從而使得具有該發光二極 體之光源模組之應用受到一定之限制。 【發明内容】 下麵將以實施例說明一種出光均勻之發光二極體光源 模組。 一種發光二極體光源模組，其包括：一個發光二極體 與一個與該發光二極體相對設置之光學透鏡。該光學透鏡 包括一個用於接收該發光二極體所發出光線之入光面，一 個與該入光面相對之出光面，以及一個位於該入光面與該 出光面之間之侧面。該入光面包括一個第一入光部與一個 6 201001691 圍繞該第-入光部之第二入光部，該 面，該第-入光部與該第二入光部 2為一個平 入光部與該側面之夾角為銳肖。㈣Μ ’該第二 =及-個圍繞該第—出光部之第二出光部固 邛與該第一入光部相對，該 /第出先 出光部之 側面為一個全反射而出為—個凹曲面。該 王反射面，該侧面與該出光面之第 夾角為銳角。 學透鏡技術’該發光二極體光源模組經由設置光 、毛光一極體發出之光線進 體所發出之光線中之一邻分姐笛 丄4 涊發光一極 鏡中光部入射至該光學透 =發散作用，從而有效地降低了該發光二：= 〇冬光一極體發出之另一部分之光線經第二入光部 贫山至該光予透鏡之側面’光線於側面發生全反射後經由 ::光面之第一出光部出射，使得該發光二極體發出之周 、光束主要經由第二出光部出射，有效地提高了該發光 S體周邊之出射光之亮度’從而可使得整個光源模組之 出光均勻度得到相應地提升。 【實施方式】 明。下面將結合附圖對本發明實施方式作進一步之詳細說 ^明參見圖1 ’本發明實施例提供之一種發光二極體光源 板組20,其包括：一個發光二極體η以及一個光學透鏡 22 〇 7 201001691 請參見圖2,該光學透鏡22包括一個入光面23、一個 與該入光面23相對之出光面24以及一個設置於該入光面 23與該出光面24之間之側面25。 該入光面23包括一個第一入光部231、一個第二入光 部232以及一個圓環面233。該第一入光部231為一個平 面。該第二入光部232設置於該第一入光部231與該圓環 面233之間。該第二入光部232圍繞該第一入光部231，且 與該第一入光部231之夾角為01，該夾角<91為鈍角。於 本實施例中，該夾角<9 1之取值範圍為11〇度〜16〇度。該 圓環面233圍繞該第二入光部232，該圓環面233與該第一 入光部231平行。該圓環面233之設置主要用於當該光學 透鏡22與其他物件接合時，能很好之接合。 可理解的是’該入光面23也可只包括一個第一入光部 231及一個第二入光部232，該側面25可直接與該第二入 光部232相連。 該出光面24包括一個第一出光部241與一個第二出光 部242。該第一出光部241與該第一入光部231相對，其為 —個凹曲面。該第二出光部242圍繞該第一出光部241，其 為一個向内凹陷之圓環形平面。當然，該第二出光部242 也可為其他形狀，如為一個向内凹陷之圓環形曲面，或為 圓環形曲面與圓環形平面之組合。 該側面25與該入光面23之圓環面233相連接，並成 個夾角Θ 2，該夾角0 2為鈍角。於本實施例中，該夾角 θ 2之取值範圍為100度〜160度。同時，側面25與該出光 8 201001691 面24之第二出光部242相連接，並成一個夾角03,該夾 角Θ3為銳角。於本實施例中，該夾角Θ3之取值範圍均為 30度〜80度。 該發光二極體21與該光學透鏡22之入光面23相對設 置。於本實施例中，該發光二極體21位於該入光面23之 中心軸線00’上。 該發光二極體21發出之光線中之一部分經第一入光部 231入射至該光學透鏡22並經由該第一出光部241出射， 該第一出光部241為凹曲面對光線有發散作用，從而有效 地降低了發光二極體21中央之亮度。 δ玄發光一極體21發出之另一部分之光線經第二入光部 232入射至該光學透鏡22之側面25，光線於該側面25發 生全反射後經由該出光面24之第二出光部242出射，使得 發光二極體發出之周邊之光束主要經由第二出光部242 出射’有效地提高了發光二極體21周邊之出射光之亮度， 從而可使得整個光源模組2G之出光均勻度得到相應地提 升0 綜上所述’本發明確已符合發明專利之要件，遂依法 ^出專射請。m所述者僅為本發日狀較佳實施方 L蓺自不能"!此限制本案之申請專利範圍。舉凡熟悉本案 庫人士k依本發明之精神所作之等效修飾或變化，皆 應涵盍於以下申請專利範圍内。 【圖式簡單說明】 圖係本發明實施例提供之發光二極體光源模組之立 201001691 體示意圖。 圖2係圖1沿剖線II-II之剖面示意圖。 【主要元件符號說明】 光源模組 20 發光二極體 21 光學透鏡 22 入光面 23 出光面 24 側面 25 第一入光部 231 第二入光部 232 圓環面 233 第一出光部 241 第二出光部 242 10201001691 IX. Description of the Invention: [Technical Field] The present invention relates to the field of optical technology, and in particular, to a light-emitting diode light source module. [Prior Art] Light Emitting Diode (LED) has been widely used in many fields due to its low power consumption, long life, small size, and high brightness. Here, a novel light-emitting diode can be found in Illumination With Solid State Lighting Technology by Daniel A. Steigerwald et al., IEEE Journal on Selected Topics in Quantum Electronics, Vol. 8, No. 2, March/April 2002. . The light emitting diode can be applied to a light source module such as a street light. The light emitting angle of the light emitting diode is generally 90 degrees to 120 degrees, and the light intensity in the center (the light exiting angle is about 0 to 30 degrees) is strong, and the surrounding light intensity is weak, resulting in uneven light emission of the entire light source module. Therefore, the application of the light source module having the light emitting diode is limited. SUMMARY OF THE INVENTION A light-emitting diode light source module having uniform light emission will be described below by way of embodiments. A light emitting diode light source module includes: a light emitting diode and an optical lens disposed opposite to the light emitting diode. The optical lens includes a light incident surface for receiving light emitted by the light emitting diode, a light emitting surface opposite to the light incident surface, and a side surface between the light incident surface and the light emitting surface. The light incident surface includes a first light incident portion and a second light incident portion surrounding the first light incident portion, wherein the first light incident portion and the second light incident portion 2 are flat. The angle between the light portion and the side surface is sharp. (4) 该 'The second = and - the second light exiting portion surrounding the first light exiting portion is opposite to the first light incident portion, and the side surface of the / first light exiting and first light exiting portion is a total reflection and is a concave curved surface . The reflecting surface of the king has an acute angle between the side and the light emitting surface. Lens technology "The light-emitting diode light source module is placed in the light emitted by the light, the light emitted by the body of the hair, one of the light emitted by the body, and the light is incident on the light. Transmittance = divergence, thereby effectively reducing the illuminating two: = the other part of the light emitted by the 〇 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光The first light exiting portion of the smooth surface is emitted, so that the light emitted from the light emitting diode and the light beam are mainly emitted through the second light emitting portion, thereby effectively improving the brightness of the outgoing light around the light emitting S body, thereby making the entire light source The uniformity of the light output of the module is correspondingly improved. [Embodiment] It is clear. The embodiment of the present invention will be further described in detail with reference to the accompanying drawings. Referring to FIG. 1 , an embodiment of the present invention provides a light-emitting diode light source panel 20 comprising: a light-emitting diode η and an optical lens 22 〇7 201001691 Referring to FIG. 2, the optical lens 22 includes a light incident surface 23, a light exit surface 24 opposite to the light incident surface 23, and a side surface 25 disposed between the light incident surface 23 and the light exit surface 24. . The light incident surface 23 includes a first light incident portion 231, a second light incident portion 232, and a toroidal surface 233. The first light incident portion 231 is a flat surface. The second light incident portion 232 is disposed between the first light incident portion 231 and the annular surface 233. The second light incident portion 232 surrounds the first light incident portion 231 and has an angle of 0.01 with the first light incident portion 231. The angle <91 is an obtuse angle. In this embodiment, the angle <9 1 ranges from 11 to 16 degrees. The annular surface 233 surrounds the second light incident portion 232, and the annular surface 233 is parallel to the first light incident portion 231. The annular surface 233 is primarily provided for good engagement when the optical lens 22 is engaged with other objects. It can be understood that the light incident surface 23 can also include only one first light incident portion 231 and one second light incident portion 232, and the side surface 25 can be directly connected to the second light incident portion 232. The light exiting surface 24 includes a first light exiting portion 241 and a second light exiting portion 242. The first light exiting portion 241 is opposite to the first light incident portion 231 and is a concave curved surface. The second light exiting portion 242 surrounds the first light exiting portion 241, which is an annular plane that is recessed inward. Of course, the second light exit portion 242 may also have other shapes, such as a circular curved surface that is recessed inward, or a combination of a circular curved surface and a circular circular surface. The side surface 25 is connected to the annular surface 233 of the light incident surface 23 and has an angle Θ 2 which is an obtuse angle. In the embodiment, the angle θ 2 ranges from 100 degrees to 160 degrees. At the same time, the side surface 25 is connected to the second light exit portion 242 of the surface 8 of the light exiting 8 201001691, and forms an angle 03 which is an acute angle. In the embodiment, the angle Θ3 ranges from 30 degrees to 80 degrees. The light-emitting diode 21 is disposed opposite to the light incident surface 23 of the optical lens 22. In the embodiment, the LED 21 is located on the central axis 00' of the light incident surface 23. One of the light rays emitted from the light-emitting diode 21 is incident on the optical lens 22 through the first light-injecting portion 231 and is emitted through the first light-emitting portion 241. The first light-emitting portion 241 has a concave curved surface and has a diverging effect on the light. Thereby, the brightness of the center of the light-emitting diode 21 is effectively reduced. The other portion of the light emitted by the δ-light emitting diode 21 is incident on the side surface 25 of the optical lens 22 through the second light incident portion 232, and the light is totally reflected by the side surface 25 and then passes through the second light exit portion 242 of the light exit surface 24. The light emitted from the periphery of the light emitting diode is mainly emitted through the second light exiting portion 242 to effectively increase the brightness of the light emitted from the periphery of the light emitting diode 21, so that the light uniformity of the entire light source module 2G can be obtained. Correspondingly raise 0. In summary, the invention has indeed met the requirements of the invention patent, and the special shot is required according to law. m is only a preferred embodiment of this issue. L蓺 can't "! This limits the scope of patent application in this case. Equivalent modifications or variations made by persons who are familiar with the library in accordance with the spirit of the present invention are intended to be within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS The figure is a schematic diagram of a light-emitting diode light source module provided by an embodiment of the present invention. Figure 2 is a schematic cross-sectional view taken along line II-II of Figure 1. [Description of main component symbols] Light source module 20 Light-emitting diode 21 Optical lens 22 Light-incident surface 23 Light-emitting surface 24 Side surface 25 First light-inlet portion 231 Second light-inlet portion 232 Ring-shaped surface 233 First light-emitting portion 241 Second Light exiting part 242 10