M318731 八、新型說明： 【新型所屬之技術領域】 本新型是有關於一種發光裝置，且特別是有關於一種 小角度發光之發光二極體裝置。 【先前技術】 隨著發光二極體的應用從原始的指示燈用途發展到 作為照明燈源，因此對於其亮度的需求大幅的提高。除了 提南晶片本身的發光率外，能夠降低發光二極體光損失的 封裝結構亦是目前研發的重點。 菲淫爾透鏡（fresnel lens，或稱為平面放大鏡）具有將 光束聚焦的功能，工業上利用其重量輕體積小的優點，廣 泛用於探照燈、投影機、汽車燈等領域。目前，菲涅爾透 鏡也被應用於製作發光二極體的透鏡結構，以控制發光二 極體的出光角度及提昇發光效率。 請參照第1圖，為習知之具有菲涅爾透鏡之發光二極 體裝置的立體透視圖。一發光二極體裝置1〇〇具有一基座 110、發光元件120固定於基座11〇之上，一殼體130 汉於基座110及發光元件120上。其中，殼體13〇具有一 上表面132，上表面132包含一菲涅爾透鏡134之構造， 菲涅爾透鏡134設於發光元件12〇之上方，用以聚集發光 元件120發出之光線。 然而，由第1圖可看出，殼體13〇為一矩型之結構， 其菲涅爾透鏡134僅位於矩型之上表面，因此發光元件12〇 5 M318731 發出之光線將會有一大部份自殼體130四周散射，光損失 增加且無法有效利用所有光線，使提昇發光效率之效果有 限0 【新型内容】 因此本新型一方面在提供一種發光裝置，用以改善目 月J毛光一極體之菲涅爾透鏡結構無法有效利用光線的缺 點。 根據本新型之一種發光裝置，係包含一發光元件及一 透鏡。發光元件具有發光半導體晶片用以提供光源，透鏡 為一凸體，具有一開口、一内部空間及一外表面。透鏡之 開口朝向發光元件之方向設置，並容置發光元件於内部空 間中用以聚集光線。透鏡之外表面可為一凸面，外表面上 具有複數溝槽，其中每一溝槽之底面積小於其開口之面 積’且每一溝槽與透鏡之開口為同心圓。 本新型實施例之發光裝置，係利用透鏡及分佈於其外 表面之溝槽而形成具有菲涅爾透鏡功效，並將光源放置於 菲涅爾透鏡之内而非菲涅爾透鏡之下方，不但具有菲涅爾 透鏡之聚焦作用，更能提高光線的利用率，經由菲涅爾透 鏡形成較小之發光角度，提供高效率之點光源。 【實施方式】 睛參照第2圖，其繪示依照本新型一實施例的一種發 光裝置的立體圖。發光裝置2〇〇包含一發光元件21〇及一 6 M318731 透鏡220 〇 透鏡220可為一凸體，具有一外表面224，外表面224 上具有複數溝槽226，每一溝槽226之間可以等距離或不 等距離分佈於外表面224上。 發光元件210可為一發光二極體，由一基座、一發光 半導體晶片設於該基座上、複數導線及導線架所構成，其 中複數導線連接導線架與發光半導體晶片之間。 參照第3圖，其繪示依照本新型實施例的發光裝置之 俯視圖。透鏡220上之溝槽226與之透鏡220開口 228為 同心圓，其中每一溝槽226之間的距離可以為等距離或不 等距離分佈。 請參照第4圖，其繪示依照本新型實施例的發光裝置 的剖面圖。透鏡220具有一内部空間222，透鏡220係以 開口朝向發光元件210之方向設置，部分之發光元件210 可容置於内部空間中。 外表面224上之每一溝槽226之剖面係為一類似V字 形狀之微結構，每一溝槽226的底面積均小於其溝槽開口 面積，且每一溝槽226與透鏡220之開口為同心圓。 發光元件210之基座可具有一反射杯結構，其杯壁沿 杯底向杯口延伸擴大。依照本發明之一實施例，發光元件 210之基座亦可為一平面板體，基座之表面可具有一層反 射層，由具有反射性之材料所構成，例如金屬塗層。發光 元件210之發光半導體晶片係位於透鏡220之中心線位 置，其發出之光線可經由包圍在其四周及上方的溝槽226 7 M318731 所構成之菲轉透鏡料聚线目的。 依照本新型之實施例，透鏡22g之内部㈣222中可 填充一保護層，用以保護發光元件21G並減少封裝體之反 射率。保護層可為—折射率介於晶片折射率魅氣折射率 之間的透明材料，例如環氧樹脂。 一雖然本新型已以一實施例揭露如上，然其並非用以限 定本新型’任何熟習此技藝者，在不脫離本新型之精神和 靶圍内，當可作各種之更動與潤飾，因此本新型之保護範 圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 為讓本新型之上述和其他目的、特徵、優點與實施例 能更明顯易懂，所附圖式之詳細說明如下： 第1圖是習知之具有菲涅爾透鏡之發光二極體裝置的 立體透視圖。 第2圖係繪示依照本新型一實施例的一種發光裝置的 立體圖。 第3圖係繪示依照本新型實施例的發光裝置之俯視 圖。 第4圖係繪示依照本新型實施例的發光裝置的剖面 圖。 110 :基座 【主要元件符號說明】 100 :發光二極體裝置 M318731 120 ： 發光元件 130 ： 132 ： 上表面 134 : 200 ： 發光裝置 210 ·· 220 ： 透鏡 222 : 224 ： 228 ： 外表面 開口 226 : 殼體 菲涅爾透鏡 發光元件 内部空間 溝槽M318731 VIII. New description: [New technical field] The present invention relates to a light-emitting device, and more particularly to a light-emitting diode device with small-angle illumination. [Prior Art] As the application of the light-emitting diode has progressed from the original use of the indicator light to the source of the illumination, the demand for its brightness has been greatly increased. In addition to the luminosity of the Tynan chip itself, the package structure that can reduce the light loss of the LED is also the focus of current research and development. Fresnel lens (or flat magnifying glass) has the function of focusing the light beam. It is widely used in searchlights, projectors, car lights and other fields due to its light weight and small size. At present, Fresnel lens is also used to fabricate the lens structure of the light-emitting diode to control the light-emitting diode's light-emitting angle and improve the light-emitting efficiency. Referring to Fig. 1, there is shown a perspective perspective view of a conventional light-emitting diode device having a Fresnel lens. A light-emitting diode device 1A has a pedestal 110, and the light-emitting element 120 is fixed on the pedestal 11A. A casing 130 is disposed on the susceptor 110 and the illuminating element 120. The housing 13 has an upper surface 132. The upper surface 132 includes a Fresnel lens 134. The Fresnel lens 134 is disposed above the light-emitting element 12 to collect the light emitted by the light-emitting element 120. However, as can be seen from Fig. 1, the casing 13 is a rectangular structure, and the Fresnel lens 134 is only located on the upper surface of the rectangular shape, so that the light emitted from the light-emitting element 12〇5 M318731 will have a large portion. The parts are scattered from the periphery of the casing 130, the light loss is increased, and all the light can not be effectively utilized, so that the effect of improving the luminous efficiency is limited. [New content] Therefore, the present invention provides an illuminating device for improving the brightness of the moon. The Fresnel lens structure of the body cannot effectively utilize the shortcomings of light. A light-emitting device according to the present invention comprises a light-emitting element and a lens. The light-emitting element has a light-emitting semiconductor wafer for providing a light source, and the lens is a convex body having an opening, an inner space and an outer surface. The opening of the lens is disposed toward the light emitting element and houses the light emitting element in the internal space for collecting light. The outer surface of the lens may be a convex surface having a plurality of grooves on the outer surface, wherein the bottom surface of each groove is smaller than the area of its opening and each groove is concentric with the opening of the lens. The illuminating device of the novel embodiment uses the lens and the groove distributed on the outer surface thereof to form the effect of having a Fresnel lens, and the light source is placed inside the Fresnel lens instead of below the Fresnel lens, not only With the focusing effect of the Fresnel lens, the utilization of light can be improved, and a small illumination angle is formed via the Fresnel lens to provide a high-efficiency point light source. [Embodiment] Referring to Figure 2, there is shown a perspective view of a light emitting device in accordance with an embodiment of the present invention. The light-emitting device 2A includes a light-emitting element 21A and a 6 M318731 lens 220. The lens 220 can be a convex body having an outer surface 224, and the outer surface 224 has a plurality of grooves 226, and each of the grooves 226 can be Equidistant or unequal distances are distributed over the outer surface 224. The light-emitting element 210 can be a light-emitting diode composed of a pedestal, a light-emitting semiconductor wafer disposed on the pedestal, a plurality of wires and a lead frame, wherein the plurality of wires are connected between the lead frame and the light-emitting semiconductor wafer. Referring to Figure 3, there is shown a top plan view of a light emitting device in accordance with an embodiment of the present invention. The grooves 226 on the lens 220 are concentric with the opening 220 of the lens 220, wherein the distance between each of the grooves 226 may be equidistant or unequal. Referring to Figure 4, a cross-sectional view of a light emitting device in accordance with an embodiment of the present invention is shown. The lens 220 has an internal space 222 in which the opening 220 is disposed toward the light emitting element 210, and a portion of the light emitting element 210 can be accommodated in the internal space. Each of the grooves 226 on the outer surface 224 has a V-shaped microstructure, and each of the grooves 226 has a bottom area smaller than the groove opening area, and each of the grooves 226 and the opening of the lens 220 For concentric circles. The base of the light-emitting element 210 can have a reflective cup structure with its cup wall extending along the bottom of the cup toward the mouth of the cup. According to an embodiment of the invention, the base of the light-emitting element 210 may also be a flat plate body, and the surface of the base may have a reflective layer composed of a reflective material such as a metal coating. The light-emitting semiconductor wafer of the light-emitting element 210 is located at the center line of the lens 220, and the light emitted by the light-emitting element 210 can be formed by the fluoro-lens lens material line formed by the grooves 226 7 M318731 surrounding and above it. In accordance with an embodiment of the present invention, the inner (four) 222 of the lens 22g may be filled with a protective layer for protecting the light-emitting element 21G and reducing the reflectance of the package. The protective layer can be a transparent material having a refractive index between the refractive index of the refractive index of the wafer, such as an epoxy resin. Although the present invention has been disclosed in an embodiment as described above, it is not intended to limit the present invention to anyone skilled in the art, and various modifications and refinements can be made without departing from the spirit and scope of the present invention. The scope of the new protection is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious, the detailed description of the drawings is as follows: FIG. 1 is a conventional luminescence with a Fresnel lens A perspective view of a diode device. Figure 2 is a perspective view of a light emitting device in accordance with an embodiment of the present invention. Figure 3 is a plan view of a light emitting device in accordance with an embodiment of the present invention. Figure 4 is a cross-sectional view showing a light-emitting device in accordance with an embodiment of the present invention. 110: pedestal [Major component symbol description] 100: Light-emitting diode device M318731 120 : Light-emitting element 130 : 132 : Upper surface 134 : 200 : Light-emitting device 210 · · 220 : Lens 222 : 224 : 228 : Outer surface opening 226 : Housing Fresnel lens light-emitting element internal space trench