201209345 六、發明說明： 【發明所屬之技術領域j 本發明是有關於一種燈具，且特別是有關於一種透鏡 及使用此透鏡的燈具。 【先前技術】 在曰常生活中’由於發光二極體(Light Emitting Diode, LED)光源具有體積小以及使用壽命長之優點，因此以發光 二極體作為光源的應用已經越來越常見。 值得一提的是，在習知之發光二極體光源的應用中， 由於發光二極體光源是一種具有指向性的光源，所以位於 發光一極體光源蚋方的光直射區通常具有較高的亮度，而 非光直射區域之亮度便較低於光直射區域之亮度。由於發 光二極體統的指向輯性，使得發光二極體光源多是應 用於局部f要冑亮度的燈具巾，#剌在錢(—Ο 型的照明燈具便有亮度不均勻且可視純圍較小等缺陷。 【發明内容】 本供-種造型簡單且可提升指向性光源之可 視角範圍的透鏡。 二極體做為光源且具有較 本發明提供一種使用發光 大之可視角範圍的裝飾型燈具。 本發明提出一種透鏡， 在透鏡内。此透鏡具有—容 而一發光二極體光源適於配置 置部、一第一出光面以及一第 201209345 二出光面，其中第一出光面位於容置部上方，且第二出光 面環繞第一出光面並位於容置部的外側，而第一出光面及 第二出光面為凹面。 在本發明之透鏡的一實施例中’上述之容置部具有一 頂入光面以及一側入光面，頂入光面位於發光二極體光源 上方，而側入光面環繞頂入光面，且發光二極體光源位於 側入光面内。 在本發明之透鏡的一實施例中，上述之第一出光面具 有一第一子出光面以及一第二子出光面，第一子出光面為 一平面’且平行於頂入光面，而第二子出光面環繞第一子 出光面並與第二出光面連接。 在本發明之透鏡的一實施例中’上述之第二子出光面 為斜面或曲面。 在本發明之透鏡的一實施例中，上述之第一出光面的 剖面呈一漏斗狀。 在本發明之透鏡的一實施例中，上述之第一子出光面 的直徑為0.5公厘。 在本發明之透鏡的一實施例中，上述之第二出光面具 有一第三子出光面以及一第四子出光面，第三子出光面連 接第一出光面，而第四子出光面與容置部的側入光面共軸。 本發明另提出一種燈具，包括一燈罩、一基座、一透 鏡以及一發光二極體光源。基座與燈罩組裝在一起，而透 鏡配置於基座上，並位於燈罩内。透鏡具有一容置部、一 第一出光面以及一第二出光面，其中第一出光面位於容置 4 201209345 .極體光源 邻上方且第一出光面環繞第一出光面並位於容置部的外 側，而第一出光面及第二出光面為凹面。發光 配置於透鏡的容置部内。 ，本發明之燈具的—實施例中，上述之容置部具有一 頂入光面以及一側入光面，頂入光面位於發光二極體光源 上方，而側入光面環繞頂入光面，且發光二極體光源位於 側入光面内。 在本發明之燈具的一實施例中，上述之第—出光面具 有H出光面以及-第二子出光面，第—子出光面^ 平面，且平行於頂入光面，而第二子出光面環繞第—子 出光面並與第二出光面連接。 在本發明之燈具的一實施例中，上述之第二 為斜面或曲面。 九面 在本發明之燈具的一實施例中，上述之第—出 剖面呈一漏斗狀。 、 在本發明之燈具的一實施例中，上述之第— 的直徑為0.5公厘。 九面 在本發明之燈具的一實施例中，上述之第二出光面且 有了第三子出光面以及—第四子出光面，第三子出光面具 接第一出光面，而第四子出光面與容置部的側入光面共車^ 基於上述，本發明之透鏡具有造型簡單且可提升可。 角的優點，而將此透鏡使用於燈具中，可以改變發 視 體光源的光路徑’讓為指向性光㈣發光二極體 極 以應用在裝飾型的燈具中。 ’、也可 201209345 —為讓本發明之上述特徵和優點能更明顯易懂，下文特 舉實施例，並配合所附圖式作詳細說明如下。 【實施方式】 圖1為本發明一實施例之透鏡的立體示意圖、圖2為 者圖1之A-A剖面線之透鏡的剖面示意圖。請同時參考 圖1及圖2 ’透鏡130具有一容置部132、一第一出光面 134以及一第二出光面136,其中第一出光面134位於容置 部132上方，且第二出光面136環繞第一出光面134並位 於容置部132的外側，而第一出光面134及第二出光面136 為凹面。詳細而言，容置部132用以讓光源容置於其中， 其中本貫施例之透鏡]30主要是用以改良指向性光源的應 用範圍，因此透鏡130用以罩覆在發光二極體上。 前述之透鏡130的容置部132具有一頂入光面132a 以及一側入光面132b，其中頂入光面132a為一平面，而 側入光面132b環繞頂入光面132a，且頂入光面132a與侧 入光面132b共同形成的空間用以容置一發光二極體光源。 另外，第一出光面134具有一第一子出光面13如以 及—第二子出光面134b，其中第一子出光面134a為一平 面’且平行於頂入光面132a ’而第二子出光面134b環繞 第一子出光面134a並與第二出光面136連接，且本實施例 的第二子出光面134b為斜面。換言之，第—出光面134 的剖面大致呈一漏斗狀。 再者’第二出光面136可具有一第三子出光面136a 6 201209345 以及一第四子出光面136b，其中第三子出光面136a連接 於第一出光面134以及第四子出光面136b之間，且第四子 出光面136b與容置部132的侧入光面132b共軸。 圖3為應用圖1之透鏡的燈具的示意圖，而圖4為發 光二極體光源所發出的光在透鏡中的光路徑示意圖。請同 時參考圖3及圖4，將上述之透鏡130應用在一燈具1〇〇 中，其中此燈具100包括一燈罩110、一基座120、上述之 透鏡130以及一發光二極體光源14〇。基座12〇與燈罩11〇 組裝在一起，而透鏡13〇配置於基座12〇上，並位於燈罩 U〇内’發光二極體光源140配置於透鏡13〇的容置部132 内，且發光二極體光源140的發光面朝向容置部132的頂 入光面132a。 ^當發光二極體光源140發光時，光線會從透鏡13〇之 谷置部132的頂入光面132a及侧入光面132進入透鏡 130’其中因為發光二極體光源14〇為指向性的光源，所以 大部份的光線是從頂入光面132a進入透鏡13〇中。 三進^透鏡130的光線部份投射至第二出光面136的第 ί 面服以及第四子出光面⑽後出光，而部分 134a、的^射至第—出光面134，其中投射至第—子出光面 、，因為入光角度的關係，會直接射出於透鏡13〇 度的Π射至第二子出光面㈣的光也同樣因為入光角 、，、’被第二子出光面134b反射後，朝向第 面136a後出光。 卞出九 由圖4可以看出，若是第-出光面134為-個平面， 201209345 原本發光二極體光源140發出的光投射至第一出光面134 後便會直接出射，使得燈具100的可視角範圍會集中於發 光二極體光源140的發光方向上，且會有亮度集中於燈具 100前方的亮暗不均問題。本實施例的透鏡130經過改良， 讓第一出光面134具有為平面的第一子出光面134a以及與 第一子出光面134a夾一角度而為斜面的第二子出光面 134b’其中第一子出光面134a的直徑為等於或大於〇.5公 厘’以使發光二極體光源140發出的光仍可以經由第一子 出光面134a(即發光方向上）出光。此外，第二子出光面mb 更可以將投射至第二子出光面134b的光線反射後再投射 至第三子出光面136a後射出，以提升燈具1〇〇發光時的可 視角範圍。圖5及圖6為圖3之燈具的可視角範圍的示意 圖，其中圖5是以軟體模擬而得到的圖形，而圖6為實際 量測所得到的圖形。由圖5及圖6可知，本實施例之燈具 100的可視角範圍可達正負110度左右。以〇度作為 100的前方時，使用者從燈具1〇〇的後方都還能看到燈具 100發亮，改良了習知指向性光源只能應用在照射方向固 定的燈具中，而如今透過本實施例的透鏡130的應用，讓 燭光式燈具也可以使贿光二極體作為光源。此外，整體 來看，燈具100也具有均勻的亮度。 雖然上述實施例是以第二子出光面134b為斜面為例 說明’但在其他未繪示的實施例中，第二子出光面134b 也可以疋凸面或凹面等曲面’只要能達到使光線部分穿透 且部分反射，以增加發Μ度範圍的目的即可。 8 201209345 m2，㈣中’凹是指凹向於透鏡1川内，而凸是 I30外’但本領域具通常知識者應知悉上述 所描述的凹、凸為相對的概念，本發明並非受限 於上述貫施例的文字說明或是圖示的表達。 將述，本發明之透鏡的造型簡單的優點。再者， 有指向性的發光二極體光源搭配使用，可以 改善發先二極體光源的可視㈣圍 於=的燈具中，更提升了發光:== =二r使用發光二極體作為光源的燈具也可具有 本發ί然if，以實施例揭露如上，然其並非用以限定 本發明之精術領域中具有通常知識者，在不脫離 發明之保^〜σ巳θ ’當可作些許之更動與潤飾，故本 …粍圍當視_之申請專利範_界定者為準。 【圖式簡單說明】 :發明一實施例之透鏡的立體示意圖。 ^ 3二著圖1之Α_Α剖面線之透鏡的剖面示意圖。 為應用圖1之透鏡的燈具的示意圖。 示意圖。為發光二極體切、所發出的光在透鏡中的光路徑 圖 圖5為以軟體模_ 3之燈具的可視域圍的示意 圖6為實際量測圖3之燈具的可視角範圍的示意圖。 201209345 【主要元件符號說明】 100 :燈具 110 :燈罩 120 :基座 130 :透鏡 132 :容置部 132a :頂入光面 132b :側入光面 134 :第一出光面 134a :第一子出光面 134b :第二子出光面 136 :第二出光面 136a :第三子出光面 136b :第四子出光面 140 :發光二極體光源201209345 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a lamp, and more particularly to a lens and a lamp using the same. [Prior Art] In the normal life, the use of light-emitting diodes as light sources has become more and more common due to the small size and long service life of the light-emitting diode (LED) light source. It is worth mentioning that in the application of the conventional light-emitting diode light source, since the light-emitting diode light source is a light source with directivity, the direct light-emitting area located on the square of the light-emitting one-pole light source generally has a high The brightness, rather than the direct light area, is lower than the brightness of the direct light area. Due to the directionality of the light-emitting diode system, the light-emitting diode light source is mostly applied to the local f-brightness of the lamp, and the #(剌钱(-Ο-type lighting fixture has uneven brightness and visible pure circumference. The invention provides a lens which is simple in shape and can improve the viewing angle range of the directional light source. The diode is used as a light source and has a decorative type which uses a wide viewing angle range. The invention provides a lens, which is provided in a lens, wherein the lens has a light-emitting diode light source suitable for arranging a portion, a first light-emitting surface and a second light-emitting surface of the 201209345, wherein the first light-emitting surface is located The second illuminating surface surrounds the first illuminating surface and is located outside the accommodating portion, and the first illuminating surface and the second illuminating surface are concave. In an embodiment of the lens of the present invention, the above accommodating The portion has a top light incident surface and a side light incident surface, the top light incident surface is located above the light emitting diode light source, and the side light incident surface surrounds the top light incident surface, and the light emitting diode light source is located in the side light incident surface.In an embodiment of the lens of the present invention, the first light-emitting mask has a first sub-light emitting surface and a second sub-light emitting surface, and the first sub-light emitting surface is a plane 'and parallel to the top surface, and The second sub-light emitting surface surrounds the first sub-light emitting surface and is connected to the second light emitting surface. In an embodiment of the lens of the present invention, the second sub-light emitting surface is a slope or a curved surface. An embodiment of the lens of the present invention. In one embodiment, the first light-emitting surface has a funnel shape. In an embodiment of the lens of the present invention, the first sub-light-emitting surface has a diameter of 0.5 mm. An embodiment of the lens of the present invention. The second light-emitting mask has a third sub-light emitting surface and a fourth sub-light emitting surface, the third sub-light emitting surface is connected to the first light-emitting surface, and the fourth sub-light-emitting surface is adjacent to the side light-incident surface of the receiving portion. The invention further provides a lamp comprising a lamp cover, a base, a lens and a light emitting diode light source. The base is assembled with the lamp cover, and the lens is disposed on the base and located in the lamp cover. a housing part, a first out a light surface and a second light exiting surface, wherein the first light emitting surface is located on the receiving surface 4 201209345. The first light emitting surface is adjacent to the first light emitting surface and is located outside the receiving portion, and the first light emitting surface and the first light emitting surface The light-emitting surface is a concave surface, and the light-emitting surface is disposed in the accommodating portion of the lens. In the embodiment of the luminaire of the present invention, the accommodating portion has a plunging surface and a light-incident surface, and the illuminating surface is located at the illuminating surface. Above the diode light source, the side light incident surface surrounds the top light incident surface, and the light emitting diode light source is located in the side light incident surface. In an embodiment of the light fixture of the present invention, the first light exiting surface has H light output a surface and a second sub-light emitting surface, the first sub-light emitting surface is planar, and parallel to the top incident surface, and the second sub-light emitting surface surrounds the first sub-light emitting surface and is connected to the second light emitting surface. In one embodiment, the second one is a bevel or a curved surface. In an embodiment of the luminaire of the present invention, the first cross section has a funnel shape. In an embodiment of the luminaire of the present invention, the first diameter is 0.5 mm. In an embodiment of the luminaire of the present invention, the second illuminating surface has a third sub-illuminating surface and a fourth sub-illuminating surface, and the third sub-lighting mask is connected to the first illuminating surface, and the fourth sub-surface The light-emitting surface and the side entrance surface of the accommodating portion are shared. Based on the above, the lens of the present invention has a simple shape and can be improved. The advantage of the angle, and the use of this lens in the luminaire, can change the light path of the illuminant source ‘to make the directional light (4) illuminating diode pole for use in decorative luminaires. The above features and advantages of the present invention will become more apparent from the following detailed description of the embodiments of the invention. [Embodiment] Fig. 1 is a perspective view showing a lens according to an embodiment of the present invention, and Fig. 2 is a schematic cross-sectional view showing a lens taken along line A-A of Fig. 1. Referring to FIG. 1 and FIG. 2, the lens 130 has a receiving portion 132, a first light emitting surface 134 and a second light emitting surface 136. The first light emitting surface 134 is located above the receiving portion 132, and the second light emitting surface is 136 surrounds the first light-emitting surface 134 and is located outside the accommodating portion 132, and the first light-emitting surface 134 and the second light-emitting surface 136 are concave. In detail, the accommodating portion 132 is configured to receive the light source therein, wherein the lens 30 of the present embodiment is mainly used to improve the application range of the directional light source, so the lens 130 is used to cover the light emitting diode. on. The accommodating portion 132 of the lens 130 has a plunging surface 132a and a side illuminating surface 132b, wherein the illuminating surface 132a is a flat surface, and the side illuminating surface 132b surrounds the illuminating surface 132a and is inserted. The space formed by the light surface 132a and the side light incident surface 132b is for accommodating a light emitting diode light source. In addition, the first light-emitting surface 134 has a first sub-light-emitting surface 13 such as a second sub-light-emitting surface 134b, wherein the first sub-light-emitting surface 134a is a plane 'and parallel to the top-into-light surface 132a' and the second sub-light is emitted The surface 134b surrounds the first sub-light-emitting surface 134a and is connected to the second light-emitting surface 136, and the second sub-light-emitting surface 134b of the embodiment is a slope. In other words, the cross section of the first light-emitting surface 134 is substantially a funnel shape. Furthermore, the second light-emitting surface 136 may have a third sub-light-emitting surface 136a 6 201209345 and a fourth sub-light-emitting surface 136b, wherein the third sub-light-emitting surface 136a is connected to the first light-emitting surface 134 and the fourth sub-light-emitting surface 136b. The fourth sub-light-emitting surface 136b is coaxial with the side incident surface 132b of the accommodating portion 132. 3 is a schematic view of a luminaire to which the lens of FIG. 1 is applied, and FIG. 4 is a schematic view of a light path of light emitted by a illuminating diode source in a lens. Referring to FIG. 3 and FIG. 4 simultaneously, the lens 130 is applied to a lamp 1 , wherein the lamp 100 includes a lamp cover 110 , a base 120 , the lens 130 , and a light emitting diode light source 14 . . The pedestal 12 〇 is assembled with the lamp cover 11 ,, and the lens 13 〇 is disposed on the pedestal 12 , and is disposed in the hood U ' 'the illuminating diode light source 140 is disposed in the accommodating portion 132 of the lens 13 ,, and The light emitting surface of the light emitting diode light source 140 faces the light incident surface 132a of the accommodating portion 132. When the light emitting diode light source 140 emits light, the light enters the lens 130' from the top surface of the lens portion 132 of the lens 13 and the side light incident surface 132 into the lens 130' because the light emitting diode light source 14 is directional. The light source is such that most of the light enters the lens 13 from the top surface 132a. The light portion of the three-injection lens 130 is projected onto the second surface of the second light-emitting surface 136 and the fourth sub-light-emitting surface (10), and the portion 134a is emitted to the first-light-emitting surface 134, wherein the projection is to the first- Because of the relationship between the light incident angles, the light that is directly emitted from the lens 13 to the second sub-light-emitting surface (4) is also reflected by the second sub-light-emitting surface 134b. After that, the light is emitted toward the first surface 136a. It can be seen from Fig. 4 that if the first-light-emitting surface 134 is a plane, the light emitted by the original light-emitting diode light source 140 of 201209345 is directly projected to the first light-emitting surface 134, so that the light-emitting device 100 can be directly emitted. The range of viewing angles will be concentrated in the direction of illumination of the light-emitting diode source 140, and there will be a problem of brightness unevenness concentrated in front of the lamp 100. The lens 130 of the embodiment is modified so that the first light-emitting surface 134 has a first sub-light-emitting surface 134a that is a flat surface and a second sub-light-emitting surface 134b that is inclined at an angle with the first sub-light-emitting surface 134a. The diameter of the sub-light-emitting surface 134a is equal to or greater than 55 mm' so that the light emitted from the light-emitting diode light source 140 can still be emitted through the first sub-light-emitting surface 134a (ie, in the light-emitting direction). In addition, the second sub-light-emitting surface mb can reflect the light projected onto the second sub-light-emitting surface 134b and then project to the third sub-light-emitting surface 136a, and then emit the light to enhance the range of the viewing angle when the lamp 1 illuminates. 5 and 6 are schematic views of the range of viewing angles of the lamp of Fig. 3, wherein Fig. 5 is a graph obtained by software simulation, and Fig. 6 is a graph obtained by actual measurement. As can be seen from FIG. 5 and FIG. 6, the range of the viewing angle of the luminaire 100 of the present embodiment can be up to plus or minus 110 degrees. When the twist is taken as the front of the 100, the user can see that the luminaire 100 is illuminated from the rear of the luminaire, and the conventional directional light source can only be applied to the illuminating fixture, and now The application of the lens 130 of the embodiment allows the candle light fixture to also use the brittle diode as a light source. In addition, the luminaire 100 also has a uniform brightness as a whole. Although the above embodiment is described by taking the second sub-light-emitting surface 134b as a slope, the second sub-light-emitting surface 134b may also have a convex surface or a concave surface, as long as the light portion can be achieved. Penetrate and partially reflect to increase the range of hair twist. 8 201209345 m2, (d) in the 'concave means concave to the lens 1 and the convex is outside the I30' but the person skilled in the art should be aware of the concept of concave and convex described above, the invention is not limited by The text of the above embodiments is illustrative or graphical representation. The advantage of the simple shape of the lens of the present invention will be described. Furthermore, the use of a directional light-emitting diode source can improve the visibility of the first-order diode source (4) in the luminaire surrounding the =, and enhance the illuminance: == = two r using the light-emitting diode as the light source The luminaire can also have the present invention, and the above is disclosed by the embodiment. However, it is not intended to limit the general knowledge in the field of the invention, and can be used without departing from the invention. A little change and refinement, so this is the standard of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS: A perspective view of a lens of an embodiment of the invention. ^ 3 2 is a cross-sectional view of the lens of the Α Α Α section line of Figure 1. A schematic view of a luminaire for applying the lens of Figure 1. schematic diagram. The light path of the light emitted by the light-emitting diode in the lens is shown in Fig. 5. Fig. 5 is a schematic view of the visible area of the light fixture of the soft mode _3. Fig. 6 is a schematic view showing the range of the viewing angle of the luminaire of Fig. 3. 201209345 [Description of main component symbols] 100: Lamp 110: Lamp cover 120: Base 130: Lens 132: accommodating portion 132a: Jacking surface 132b: Side entrance surface 134: First light-emitting surface 134a: First sub-illuminating surface 134b: second sub-light-emitting surface 136: second light-emitting surface 136a: third sub-light-emitting surface 136b: fourth sub-light-emitting surface 140: light-emitting diode light source