201017057 九、發明說明： 【發明所屬之技術領域】 本發明關於一種聚光透鏡，尤指一種可提高照明均句 度之LED燈具的聚光透鏡。 【先前技術】 按，一般使用LED光源來當照明的燈具時，通常會於 ® 其光線投射的方向加設一透鏡使其聚光。該透鏡一般是採 用光學級的塑膠材料製成，再利用透鏡表面的曲率變化， 達到聚光的效果’而據以產生比較亮的光照明。 然而加上透鏡後，也會把LED本身螢光粉塗佈不均的 現象給同時投射出來，而導致投射畫面均勻度不佳的情況 (如附件1所示）。 為解決此一照明均勻度不佳的問題，有業者於透鏡的 出光面再增設多數的微透鏡，利用面混光來改善照明的 _ 勻度。 热而琢些用來 使用上有如下諸缺慽：（―）.製造成本高：其需要製作多 數的微透鏡’而且其不同均勻度是利用微透鏡的數量、密 度來控制的，所以不同的均勾度就要有不同的製造 的模具，因而其製造成本及模具費用較高；（：）.照 勻度仍屬不佳：其係利用“ 由混先（面擴散）的技術，於 :光面的表面來混合光線’然其僅為“面，，的混光，並非 王方位冑的混光’因而其照明均句度仍屬不佳。 5 201017057 【發明内容】 發明人有鑑於前述先前技術中習知LED燈具聚光透鏡 及其微透鏡的缺點，而提供本發明—種可提高照明均勾度 之LED燈具的聚光透鏡，以期能摒除先前技術所產生的缺 失。 本發明之一目的，係提供一種可提高照明均勻度之 LED燈具的聚光透鏡，以令提高LED燈具的照明均勻度。 φ 本發月之另一目的’係提供-種可提高照明均勻度之 LED燈具的丨光透| ’較之f知增設微透鏡者可降低其製 造成本。 根據上述之目的，本發明可提高照明均勻度之LED燈 具的聚光透鏡，裝設於LED燈具的出光面，該聚光透鏡包 含有一透鏡本體與多數擴散粒子，該些多數擴散粒子佈設 於透鏡本體的體内。S此，⑨了以該透鏡本體來改變led 光線的配光曲線外，同時亦使得光線在該透鏡本體内部以 該些擴散粒子進行三度空間全方位的體混光使其光線均 勻，因而提高led燈具照明的均勻度。 較佳者，擴散粒子為以聚合物（polymer)製成的擴散 粒子，用以散射光線。 較佳者，擴散粒子的直徑為0 02um〜9um，用以多方 位的散射光線。 較佳者，透鏡本體為以聚碳酸酯（pC)製成的透鏡本 體’用以傳遞及透射光線。 較佳者’透鏡本體為以聚曱基丙烯酸甲酯（PMMA)製成 201017057 的透鏡本體，用以傳遞及透射光線。201017057 IX. Description of the Invention: [Technical Field] The present invention relates to a concentrating lens, and more particularly to a concentrating lens for an LED luminaire capable of improving the uniformity of illumination. [Prior Art] Press, generally use LED light source to illuminate the luminaire, usually a lens is added to the direction of its light projection to condense it. The lens is typically made of an optical grade plastic material that utilizes the curvature of the lens surface to achieve a concentrating effect to produce a relatively bright illumination. However, when the lens is added, the uneven coating of the LED itself will be projected at the same time, resulting in poor uniformity of the projected image (as shown in Annex 1). In order to solve the problem of poor illumination uniformity, some manufacturers add a large number of microlenses to the light-emitting surface of the lens, and use surface-mixed light to improve the _ uniformity of illumination. There are some shortcomings in the use of heat: (-). High manufacturing cost: it requires the production of a large number of microlenses' and its different uniformity is controlled by the number and density of microlenses, so different The hooks are required to have different molds, so the manufacturing cost and mold cost are higher; (:). The uniformity is still poor: it uses the technique of “mixing first (surface diffusion)”: The surface of the smooth surface is used to mix the light. However, it is only the "face, the mixed light, not the mixed light of the king's azimuth", so the illumination uniformity is still poor. 5 201017057 SUMMARY OF THE INVENTION In view of the shortcomings of the prior art LED concentrating lens and its microlens, the inventors have provided the concentrating lens of the LED luminaire capable of improving the illumination uniformity, in order to provide the concentrating lens of the LED illuminating lens Eliminate the lack of prior art. It is an object of the present invention to provide a concentrating lens for an LED luminaire which can improve illumination uniformity, so as to improve the illumination uniformity of the LED luminaire. φ Another purpose of this month is to provide a kind of illuminating light for LED lamps that can improve the uniformity of illumination. ’Besides knowing that adding microlenses can reduce the cost of manufacturing. According to the above object, the concentrating lens of the LED luminaire capable of improving illumination uniformity is installed on the light emitting surface of the LED illuminator, and the concentrating lens comprises a lens body and a plurality of diffusing particles, and the plurality of diffusing particles are disposed on the lens. The body of the body. In this case, the lens body is used to change the light distribution curve of the LED light, and at the same time, the light is uniformly mixed in the lens body by the diffusion particles in the three-dimensional space to make the light uniform, thereby improving The uniformity of led lighting. Preferably, the diffusing particles are diffusing particles made of a polymer to scatter light. Preferably, the diffusion particles have a diameter of 0 02 um to 9 um for scattering light in multiple directions. Preferably, the lens body is a lens body made of polycarbonate (pC) for transmitting and transmitting light. Preferably, the lens body is a lens body made of polymethyl methacrylate (PMMA) 201017057 for transmitting and transmitting light.
式 方 施 實 rL 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之實施例的詳細說明中，將可清楚的呈 現。 第1圖係緣示本發明可提高照明均勻度之LED燈具的 © 聚光透鏡一較佳實施例的剖面示意圖。本發明可提高效率 之LED燈具的聚光透鏡，係裝設於該LED燈具（未圖示）的出 光面。如該圖所示’該聚光透鏡包含有一透鏡本體1與多 數擴散粒子2 ^ 透鏡本體1如同習知的聚光透鏡一樣，以光學級的塑 膠材料所製成，配合其表面的曲率變化而具有良好的聚光 效果。該所謂光學級的塑膠材料為例如聚碳酸酯（pc)或聚 甲基丙婦酸甲酯（PMMa) ’該些材料具有良好的透射效果， • S以傳遞及透射光線。 多數的擴散粒子2係佈設於透鏡本體1的體内，因此與 透鏡本體1的材料併存於該透鏡本體1内；亦即，於製作透 鏡本體1時’該些多數的擴散粒子2已掺雜於該透鏡本體i 的材料而一併成型於該透鏡本體1的體内。 在實施上’擴散粒子2以聚合物（p〇iymer)製成，直徑 為〇. 0 2um〜9um。當LED投射出來的光線碰到該些擴散粒子 時’就會在透鏡本體1的内部產生散射，達到混光的效果 201017057 因此，依據本發明，聚光透鏡除了以其透鏡本體1來 改變LED光線的配光曲線（水平角度及垂直角度）外，同時 亦在該透鏡本體1的内部以其擴散粒子2進行三度空間全 方位的體混光使其光線均勻，而達到透鏡聚光及改善投射 畫面均勻度的功效。而’本發明的混光為體混光，較之 習知微透鏡的面混光更能獲得均勻的照明效果（如附件2 所示）。 又本發明，依所佈設不同比例數量的擴散粒子，即可 獲得不同的照明均勻度，例如若LED本身均勻度就不好者 ’可藉由佈設更高比例的擴散粒子來改善其照明均勻度； 因此，本發明以同一製造透鏡本體1的模具即可做到不同 照明均勻度的調變，相較於習知使用微透鏡的技術可大幅 省下製造成本及模具費用。The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the embodiments of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a preferred embodiment of a concentrating lens of an LED lamp of the present invention which can improve illumination uniformity. The condensing lens of the LED lamp which can improve the efficiency of the present invention is mounted on the light-emitting surface of the LED lamp (not shown). As shown in the figure, the concentrating lens comprises a lens body 1 and a plurality of diffusing particles 2 . The lens body 1 is made of an optical grade plastic material in accordance with a conventional concentrating lens, and the curvature of the surface thereof is changed. Has a good concentrating effect. The so-called optical grade plastic material is, for example, polycarbonate (pc) or polymethyl methacrylate (PMMa). These materials have good transmission effects, and • S transmits and transmits light. A plurality of the diffusion particles 2 are disposed in the body of the lens body 1 and thus coexist with the material of the lens body 1 in the lens body 1; that is, when the lens body 1 is fabricated, the majority of the diffusion particles 2 are doped. The material of the lens body i is integrally molded into the body of the lens body 1. In the implementation, the diffusion particles 2 are made of a polymer (p〇iymer) having a diameter of 2. 0 2 um to 9 um. When the light projected by the LED hits the diffusing particles, it will generate scattering in the interior of the lens body 1 to achieve the effect of mixing light. 201017057 Therefore, according to the present invention, the collecting lens changes the LED light by the lens body 1 thereof. In addition to the light distribution curve (horizontal angle and vertical angle), the diffused particles 2 are also used in the interior of the lens body 1 to perform three-dimensional spatial omnidirectional light mixing to make the light uniform, thereby achieving lens concentrating and improving projection. The effect of picture uniformity. However, the mixed light of the present invention is a body-mixed light, and a uniform illumination effect can be obtained as compared with the surface mixing of the conventional microlens (as shown in Annex 2). According to the present invention, different illumination uniformities can be obtained according to different proportions of diffusion particles, for example, if the uniformity of the LED itself is not good, the illumination uniformity can be improved by laying a higher proportion of diffusion particles. Therefore, the present invention can achieve different illumination uniformity modulation by the same mold for manufacturing the lens body 1, and the manufacturing cost and the mold cost can be greatly saved compared with the conventional technique of using the microlens.
依據本發明，依所設的擴散粒子可以使得led燈具的 光線在透鏡本體的内部進行三度空間的體混光，因而可以 提高LED燈具的照明均句度；而且擴散粒子係掺雜於透鏡 本體的體内而與該透鏡本體—體製作且據以調變⑽的照 明均勻度，因此可節省大幅的製造成本及模具費用。以上 確實達到本發明的發明目的。 本發明雖已藉上述較佳實施例加以詳細說明’惟以上 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 ^月申請專利範圍所述之形狀構造特徵及精神所為之均 變化與修都，均應包含於本發明之申請專利範圍内。 201017057 【圖式簡單說明】 第1圖#絡-1 {不本發明可提高照明均勻度之LED燈具的 聚光透鏡的剖面示意圖。 【附件簡單說明】According to the present invention, according to the diffused particles, the light of the LED lamp can be mixed in the three-dimensional space inside the lens body, thereby improving the illumination uniformity of the LED lamp; and the diffusion particles are doped on the lens body. In the body, the lens body is made in a body and the illumination uniformity is adjusted according to (10), so that substantial manufacturing cost and mold cost can be saved. The above has achieved the object of the invention. The present invention has been described in detail with reference to the preferred embodiments of the present invention, which is intended to be illustrative only. Therefore, all changes and modifications to the shapes and spirits described in the scope of the application of the present invention are included in the scope of the patent application of the present invention. 201017057 [Simple description of the drawing] Fig. 1 Fig. 1 {A schematic cross-sectional view of a collecting lens of an LED lamp which can improve the uniformity of illumination according to the present invention. [A brief description of the attachment]
附件1係@ I 經由習知聚光透鏡所投射出來的光線晝 面示意圖。Attachment 1 is a schematic representation of the ray of light projected by a conventional condenser lens.
附件2係顯示 畫面示意圖。 經由 本發明聚光透鏡所投射出來的光線 【主要元件符號說明】 1. 透鏡本體 2. 擴散粒子Attachment 2 is a schematic diagram of the screen. Light projected by the condensing lens of the present invention [Description of main component symbols] 1. Lens body 2. Diffusion particles