200907247 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種LED投射燈之聚光結構，尤指一種 形狀短小、配裝容易，可將LED投射燈之投射光束聚焦至 近於平行光束的聚光透鏡結構者。 【先前技術】 按’由於發光二極體（LED )具有較長的使用壽命， 且其耗電量較低，尤其在目前能源費用逐漸高漲的狀況下 ’發光二極體更為受到產業界的重視及利用，藉以取代以 往耗電量較大的其他發光元件。 請參見第1A圖所示’一般傳統的LED投射燈結構1，包 括有一載體11、一發光二極體晶片丨2、以及一封裝樹脂】3 。其中，載體11表面具有一絕緣層1Π，並在絕緣層n i 表面設置有由導電線路所構成的導電層112,該載體丨丨表 面並向下凹陷構成一凹杯部丨丨3。發光二極體晶片丨2設置 於凹杯部113的底部114;另設有二導線121連接於發光二 極體晶片12的二電極與導電層U2之間。封裝樹脂13則密 封發光二極體晶片12及其導線1 21 ;封裝樹脂1 3外表面呈 曲狀的透鏡1 31，以聚焦發光二極體晶片丨2投射的光線。 當發光二極體晶片12藉由其導線121與導電層112通 電時’§亥發光二極體晶片1 2的頂面及四周侧面可向外發出 光線’使該光線經封裝樹脂丨3的曲狀透鏡1 3丨聚焦，而能 以光束投射出去。 200907247 惟，該透鏡131僅為消除發光二極體晶片12表面塗佈 混合之矽膠（silicone)及螢光粉等材料，在出射空氣時 ，成的全反射，且該透鏡131的出射角為半角（60度），僅 月匕作為-人光學鏡組，無法使發光二極體晶片i 2的光線聚 ' 焦至近於平行光束投射出去。 - 又’凊參見第1B ' 1C圖所示’係另種習知的LED投射 燈結構，係於一次光學鏡組131的上方設置一個二次光學 鏡組133,該二次光學鏡組133係以反射及折射混合元件組 D 成，令大角度出射光以反射面折成小角度出射光，而使發 光二極體晶片12原本小角度出射光藉二次光學鏡組133的 凸面’折射成更小角度出射光射出。 然而，此一種習知光學元件尺寸較大，而且形狀上大 下小’都需要特殊支架支撐，非常不便利。 【發明内容】 發明人有鑑於前述先前技術的缺點，而提供本發明 LED投射燈之聚光結構，以期能摒除先前技術所產生的缺 失。 本發明之一目的，係提供一種led投射燈之聚光結 構’以能將LED投射燈之投射光束聚焦至近於平行的光 束。 根據上述之目的’本發明LED投射燈之聚光結構，係 於LED投射燈上設有一次光學鏡組，該一次光學鏡組為平 凸透鏡’包含有一凸面與一内面’該凸面為曲面’該内面 200907247 為平面或凹面；該一次光學鏡組上方設有二次光學鏡組， 該二次光學鏡組為凸透鏡，包含有一凸面與一内面，惟該 凸面為非球面，該内面為折射面；俾藉由一、二次光學鏡 組構成的聚光結構，不但形狀短小、配裝容易而且可將 ' LED投射燈之投射光束聚焦至近於平行的光束投射出去。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 Ο 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 第2、3圖分別繪示本發明led投射燈一較佳實施例的 立體外觀圖及立體分解圖。如該等圖式所示，本發明led 才又射燈之聚光結構’係於一 L e D投射燈31上設有一次光學 鏡組51’該一次光學鏡組51為一平凸透鏡，包含有一凸面 511與一内面512,其中，凸面51ι為曲面，内面512為平面 或凹面。該一次光學鏡組51上方設有二次光學鏡組53，該 ^ 二次光學鏡組53為一凸透鏡，包含有一凸面531與一内面 532，其中，凸面531為非球面，内面532為折射面。俾藉 由一、二次光學鏡組51、53構成的聚光結構，不但形狀短 小、配裝容易，而且可將LED投射燈31之投射光束聚焦至 近於平行（12°〜30。）的光束投射出去。 •復請參見第2、3圖所示，該LED投射燈31包含有一載 體32、一發光二極體晶片33、以及一散熱座34。其中，載 體3 2表面具有一絕緣層，並在絕緣層表面設置有由導電線 200907247200907247 IX. Description of the Invention: [Technical Field] The present invention relates to a concentrating structure of an LED projection lamp, in particular, a short shape and easy assembly, which can focus a projection beam of an LED projection lamp to a nearly parallel beam. Condenser lens structure. [Prior Art] According to 'light-emitting diodes (LEDs) have a long service life, and their power consumption is low, especially in the current situation of rising energy costs, 'light-emitting diodes are more subject to industry Pay attention to and use it to replace other light-emitting components that used to consume large amounts of electricity. Referring to Figure 1A, a conventional conventional LED projection lamp structure 1 includes a carrier 11, a light-emitting diode wafer 2, and an encapsulating resin 3 . The surface of the carrier 11 has an insulating layer 1 Π, and a conductive layer 112 composed of a conductive line is disposed on the surface of the insulating layer n i , and the carrier is recessed on the surface and recessed downward to form a concave cup portion 3 . The light-emitting diode wafer 2 is disposed on the bottom portion 114 of the concave cup portion 113; and two wires 121 are connected between the two electrodes of the light-emitting diode wafer 12 and the conductive layer U2. The encapsulating resin 13 seals the LED wafer 12 and its wires 1 21; the lens 1 31 having a curved outer surface of the encapsulating resin 13 is used to focus the light projected by the LED chip 2 . When the light-emitting diode chip 12 is energized by the conductive line 112 and the conductive layer 112, the top surface and the peripheral side surface of the light-emitting diode chip 12 can emit light outwardly, so that the light passes through the package resin 丨3. The lens 1 3 is focused and can be projected out as a light beam. 200907247 However, the lens 131 is only for eliminating the material such as silicone and phosphor powder coated on the surface of the LED chip 12, and is totally reflected when the air is emitted, and the exit angle of the lens 131 is half angle. (60 degrees), only the moonlight as a human optics group, the light of the light-emitting diode chip i 2 cannot be focused to a near-parallel beam. - Also, see 第1B '1C'. Another conventional LED projection lamp structure is provided with a secondary optics group 133 disposed above the primary optical lens group 131. The reflection and refraction mixing element group D is formed such that the large-angle outgoing light is deflected into a small angle to emit light, and the light emitting diode 12 is originally refracted by the convex surface of the secondary optical lens group 133. The light is emitted at a smaller angle. However, this conventional optical element is large in size and large in size and small in size, requiring special bracket support, which is very inconvenient. SUMMARY OF THE INVENTION The inventors have provided the concentrating structure of the LED projection lamp of the present invention in view of the disadvantages of the foregoing prior art, in order to eliminate the defects caused by the prior art. It is an object of the present invention to provide a concentrating structure for a led projection lamp that is capable of focusing a projected beam of an LED projection lamp to a near parallel beam. According to the above object, the concentrating structure of the LED projection lamp of the present invention is provided with an optical lens set on the LED projection lamp, wherein the primary optical lens group has a convex lens and a convex surface and a convex surface. The inner surface 200907247 is a plane or a concave surface; the secondary optical lens group is provided with a secondary optical lens group, the secondary optical lens group is a convex lens, and comprises a convex surface and an inner surface, wherein the convex surface is an aspherical surface, and the inner surface is a refractive surface;聚 The concentrating structure consisting of one or two optical mirrors is not only short in shape, easy to fit, but also can project the projection beam of the 'LED projection lamp to a nearly parallel beam. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention. 2 and 3 are respectively a perspective view and an exploded perspective view of a preferred embodiment of the led projection lamp of the present invention. As shown in the drawings, the concentrating structure of the LED lamp of the present invention is provided with a primary optical lens group 51' on the L e D projection lamp 31. The primary optical lens assembly 51 is a plano-convex lens, and includes a flat lens. The convex surface 511 and the inner surface 512, wherein the convex surface 511 is a curved surface, and the inner surface 512 is a flat surface or a concave surface. A secondary optical lens group 53 is disposed above the primary optical lens assembly 51. The secondary optical lens assembly 53 is a convex lens and includes a convex surface 531 and an inner surface 532. The convex surface 531 is aspherical and the inner surface 532 is a refractive surface. .聚 The concentrating structure formed by the first and second optical mirrors 51 and 53 not only has a short shape and is easy to fit, but also can focus the projection beam of the LED projection lamp 31 to a beam that is nearly parallel (12° to 30°). Project it out. • Referring to Figures 2 and 3, the LED projection lamp 31 includes a carrier 32, a light-emitting diode chip 33, and a heat sink 34. Wherein, the surface of the carrier 32 has an insulating layer, and the surface of the insulating layer is provided with a conductive line 200907247
路所構成的導電層321，該載體32表面並向下凹陷構成— 凹杯。卩323。發光一極體晶片33設置於凹杯部323的底部， 另設有二導線（未圖示）連接於發光二極體晶片33的二電 極與導電層321之間。散熱座34位於載體32下方，供可散 去發光二極體晶片33產生的熱量。一次光學鏡組51密封發 光一極體晶片3 3及其導線。載體3 2於一次光學鏡組51的上 方設有一個二次光學鏡組53的承載座35，以供承載安裝二 次光學鏡組53。發光二極體晶片33藉由其導線與導電層 321通電時，該發光二極體晶片33的頂面及四周侧面可向 外發出光線。 請參見第4A、4B、4C、4D圖所#，係分別缘示本發 月LED技射燈之聚光結構關於一次光學鏡組與二次光學 鏡組之各種實施例的剖面示意圖。如該等圖式所示，一次 光學鏡組51之凸面511的曲面可為球面或非球面；内= 512則為平面或凹面。 -----，六另主 少一個同心圓凹溝533的非球面531;内自532的折射面 則可為非球面（如第4A圖所示）、菲涅爾曲面（如第拙圖 所示）、平面(如帛4C圖所示）、或中間為球面/非球面且 外邊為平面（如第4D圖所示）的折射面。 藉由一 '一次光學鏡虹5卜53構成的聚光結構，可 將膽投射燈31發光二極體晶片33之投射光束聚 於平行（12〜30 )的光束投射出去。 本發明雖已藉上述較佳實施例加以詳細說明，惟以上 200907247 所述者’僅用以說明本發明使熟知本技藝者可更易於了解 本發明，並非用來限定本發明實施之範圍。故而，凡依本 發明申請專利範圍所述之形狀構造特徵及精神所為之岣 等變化與修飾，均應包含於本發明之申請專利範圍内。= 【圖式簡單說明】 第1A、1B、1C圖係繪示習知一種LED投射燈的剖面圖 〇 第2圖係繪示本發明LED投射燈的立體外觀圖。 第3圖係繪示本發明LED投射燈的立體分解圖。 第4A、4B、4C、4D圖係分別綠示本發明[ED投射燈之 聚光結構關於一次光學鏡組與二次光學鏡組之各種實施 例的剖面示意圖。 【主要元件符號說明】 31、 LED投射燈 32、 載體 321、導電層 3 2 3、凹杯部 33、 發光二極體晶片 34、 散熱座 35、 承載座 51、一次光學鏡組 511、凸面（曲面） 200907247 512、内面（平面或凹面） 5 3、二次光學鏡組 5 31、凸面（非球面） 532、 内面（折射面） 533、 同心圓凹溝The conductive layer 321 formed by the road, the surface of the carrier 32 is recessed downward to form a concave cup.卩 323. The light-emitting diode chip 33 is disposed at the bottom of the concave cup portion 323, and is provided with two wires (not shown) connected between the two electrodes of the light-emitting diode wafer 33 and the conductive layer 321. The heat sink 34 is located below the carrier 32 for dissipating heat generated by the light emitting diode chip 33. The primary optical lens group 51 seals the light-emitting one-pole wafer 3 3 and its wires. The carrier 32 is provided with a carrier 35 of the secondary optical lens group 53 above the primary optical lens group 51 for carrying the secondary optical lens assembly 53. When the light-emitting diode chip 33 is energized by the conductive layer 321 by its conductive wire, the top surface and the peripheral side surface of the light-emitting diode wafer 33 can emit light outward. Please refer to the 4A, 4B, 4C, and 4D drawings, which are schematic cross-sectional views showing various embodiments of the primary optical lens group and the secondary optical lens group, respectively, of the concentrating structure of the LED technology spotlight of the present invention. As shown in the figures, the curved surface of the convex surface 511 of the primary optical lens group 51 may be spherical or aspherical; the inner = 512 is a flat or concave surface. -----, six other main a less a concentric groove 533 aspherical surface 531; the inner 532 refractive surface can be aspheric (as shown in Figure 4A), Fresnel surface (such as the first map Shown), plane (as shown in Figure 4C), or a refracting surface with a spherical/aspherical surface in the middle and a flat surface (as shown in Figure 4D). The light beam of the projection beam 31 of the bile projection lamp 31 can be projected into a parallel (12 to 30) beam by a concentrating structure composed of a primary optical mirror. The present invention has been described in detail with reference to the preferred embodiments of the present invention, and the present invention is intended to be illustrative of the present invention and is not intended to limit the scope of the invention. Therefore, all changes and modifications of the shapes and spirits described in the scope of the present invention should be included in the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A, 1B, and 1C are cross-sectional views showing a conventional LED projection lamp. FIG. 2 is a perspective view showing the LED projection lamp of the present invention. Figure 3 is a perspective exploded view of the LED projection lamp of the present invention. 4A, 4B, 4C, and 4D are green cross-sectional views showing various embodiments of the concentrating structure of the ED projection lamp with respect to the primary optical mirror and the secondary optical mirror, respectively. [Description of main component symbols] 31. LED projection lamp 32, carrier 321, conductive layer 3 2 3, concave cup portion 33, light-emitting diode wafer 34, heat sink 35, carrier 51, primary optical mirror 511, convex surface ( Surface) 200907247 512, inner surface (planar or concave) 5 3. secondary optics 5 31, convex (aspherical) 532, inner (refractive) 533, concentric grooves