201200802 六、發明說明： 【發明所屬之技#ί領域】 本發明係關於一種點照明系統’其中來自複數個光源之 光係經準直以達成一高功率點照明。 【先前技術】 在點照明應用（諸如場景設定或其他氣氛建立發光）中， 具有彩色滤光器之白色光源已被使用廣泛。最近，已開發 具有彩色光源之照明系統（例如發光二極體（LED))以作為 一替代物。 使用彩色光源消除對濾光之需要，且因此增加效率及顏 色一致性（更換濾光器可能引入變動）。此外，所發射之顏 色可由電子控制改變’且所有可獲得之顏色一直可用而無 需任何硬體更換。隨著LED之性能改善，此等系統之市場 正快速增長。 在點照明應用中，所發射之光之均勻性係至關重要。 US 6,200,002中描述用於點照明之一照明系統的一實例， 其中一管狀準直器對來自配置在該準直器入口中之一光源 陣列之光進行準直。 多通道、高通量應用（諸如CDM更換光點及多顏色娛樂 光點（用於劇院/遊覽/舞臺/演播室））需要高光輪出。一些應 用（如遊覽（臨時設備，諸如流行音樂會等等）及建築、戶’ 及街道照明燈）之光輸出處於約10 klmi5〇让1〇1之範圍。 達成處於此數量級中之光輸出，需要大4點^原（例2 LED) ’而且必須以-穩时式將該等點光源封裝於一小陣 154454.doc 201200802 列上。個別LED封裝之一總成之性能通常有限。另一方 面’專用的大型LED陣列在本質上具有一低良率，且對於 許多應用而言，專用的大型LED陣列過於昂貴。 【發明内容】 本發明之一目的係對一點照明系統提供具有令人滿意之 ' 顏色混合及準直之足夠的光輸出，可以高良率製造或組裝 該點照明系統。 此目的及其他目的係由包括一準直元件及一組N個光源 陣列之一點照明系統達成，每個光源陣列包括複數個光 源。該準直元件係由一組N個漏斗形反射器形成，每個漏 斗形反射器具有一反射内表面、一入口孔隙及一出口孔 隙’該出口孔隙比該入口孔隙大，該等漏斗形反射器係配 置成一束，使所有入口孔隙處在一端且所有出口孔隙處在 一相對端’且其中該等漏斗形反射器被截斷，以使面對一 相鄰反射器之一反射器之一邊在該相對端前終止，使得該 準直元件具有通向N個漏斗形反射器之N個入口孔隙，該 等漏斗形反射器合併成一單一出口孔隙。該N個光源陣列 係經配置以分別發射光該等入口孔隙之一者中。 * 因此’根據本發明之該準直元件接收來自N個光源之光 - 且將其組合成從該單一出口孔隙發射之一光束。來自每個 光陣列之光最初係由一單獨漏斗形反射器引導並混合，然 後與來自其他光陣列之光混合。因此，相較於將N個漏斗 形反射器配置為相互緊靠且自N個出口孔隙發射光而達成 一種經改善之混合及準直。 154454.doc 201200802 根據本發明之該準直元件進一步將N個個別光束無縫組 合成一光束，而使該等個別光束之間不存在可見邊界。 該N個光源陣列較佳地大體上相同。此提供一有效的製 程且實現該準直元件之最佳效率。 可以避免對稱的一方式圍繞一光軸旋轉每個大體上相同 之光源陣列。藉由避免對稱而進一步改善該準直及光混 合。在當則背景内容下，若干光源陣列之一對稱配置會暗 指母個陣列之相對旋轉對應於陣列數目。例如，若N=3， 則陣列之間的相對旋轉不應為12 〇度以避免對稱。 該等經截斷的漏斗形反射器較佳為如此緊密地配置在一 起以致該單一出口孔隙比]^個未經截斷的漏斗形反射器之 若干出口孔隙之一組合小（最佳為比該組合小1〇%至 20%)。此一設計進一步增強準直及光混合。 相鄰光源陣列之間的一距離較佳係介於一光源陣列之— 有效直徑的0.5倍至2倍之間。根據一實施例，相鄰光源陣 列之該距離近似等於一光源陣列之該有效直徑。已展示若 干光源陣列（及因此該準直元件之若干入口孔隙）之此一分 佈以提供令人滿意之準直及混合。 該單一出口孔隙之一有效直徑較佳為一光源陣列之一有 效直徑乘以N的1.5倍至6倍》此意指自每個光源陣列發射 之光的一光束寬度在通過該準直元件時允許變寬至15倍 至6倍。 每個光源陣列可包括至少一組經組態以發射一第一顏色 之光的光源及至少一組經組態以發射與該第一顏色不同之 154454.doc • 6 · 201200802 一第二顏色之光的光源。藉由在每個光源陣列中具有多種 顏色’該點照明系統可經控制以發射各種顏色。 在此情況下，本發明之該準直元件之該光混合將包含顏 色混合。相較於在遠場（例如在一墙上）中之光混合，在光 . 學器件内部達成顏色混合係有效。根據本發明之一準直元 件可達成70%以上之一光學效率，此對於獲得具有高亮度 之一準直及混合光學器件係具有挑戰性。 在此背景内容下，一組光源可為一單一光源，或可為配 置在一起之一光源群組。例如，可以一二維（2D)陣列中中 之一行光源之形式提供一組光源。 該數目N可為比1大之任意數目。然而，在目前所考慮的 若干實施例中，該數目>^屬於集合[2、3、4、5、7、9、 12]。已展不的是，在此一數目N情況下，該漏斗反射器可 經父错以提供令人滿意之光混合。 【實施方式】 圖1展示適用於氣氛建立照明（諸如場景設定）之點照明 之照明系統的一分解透視圖。此處，該照明系統i 〇包括 安裝於一載體（諸如一印刷電路板（？(：8)3)上之三個光源陣 • 列1(諸如LED陣列），該載體配置於一散熱器4上，該散熱 . 器4繼而配置於一熱槽5上。該照明系統1〇進一步包括具有 一反射性内表面之一準直元件2。該準直元件具有三個入 口孔隙7及唯一一個出口孔8，每個入口孔隙與該等光源陣 列1之者對齊。在該準直元件2之該出口孔隙8處，提供 一漫射構件（此處呈一光學漫射薄片9之形式）及/或進—步 I54454.doc 201200802 對該光束進行準直之一場透鏡。 該系統ίο進一步包括對該等光源陣列供電及控制該等光 源陣列之電路，但是因為此電路對於本發明之揭示並非必 要’故為簡潔起見已省略該電路之描述。 一隔片環14可作為若干光源陣列與該準直元件之間的機 械及光學介面。 该準直元件2(圖2中更詳細地展示該準直元件）具有一對 應於二個漏斗形的管狀反射器11之一形狀，該等反射器已 相互交錯。此處，每個管狀反射器在垂直於該照明系統之 光軸之一平面中具有一多邊形剖面，在所繪示之情況下具 有七條邊（一七邊形剖面）β與若干相鄰反射器之若干邊接 觸之邊〗2已經截斷以在該準直元件之端部前終止。藉此， 該三個反射器合併成一出口孔隙8。該等反射器之入口孔 隙7a、7b、7c各自形成該準直元件2之該等入口孔隙之一 者。 該等個別反射器11之光軸可朝該整個照明系統之光軸稍 微傾斜。此可進一步改善將來自該等個別光源陣列之光束 組合成一光束。 在圖2中，該等反射器lla至llc之反射性内表面係筆 直。然而，該等内表面亦可為如從每個入口孔隙之光軸所 見的凸型，亦即形成一喇„八形反射器。亦可能具有凹型内 表面。 可藉由將多個零件組裝在一起或組裝為一單一零件（例 如，藉由射出成型或快速原型設計）以聚合材料製造該準 154454.doc 201200802 直70件之主體。然後，一高反射性箔（例如米諾（Mir〇)箔） 可附著（例如膠著）至該主體之内表面上。或者，可以一高 反射鏡塗佈該内表面。該包絡之反射性部件可相對較薄， 其厚度介於0.5 mm與10 mm之間，較佳的是介於〇 7 mm與 . 5 mm之間，最佳的是介於〇·8 mm與2 mm之間。該反射性 - 部件可與散熱器4或熱槽5接觸，且較佳的是該反射性部件 附著至該等光源陣列丨安裝於其上之該板3。視情況，一 POC荡係配置在該準直元件之出口孔隙8處或靠近該準直 元件之出口孔隙8。 應注意的是，該照明系統一般可包括任意數目N個大體 上相同的光源陣列丨及對應數目之漏斗形反射器，該等漏 斗形反射器係經父錯以形成具有一出口孔隙8之一準直元 件2。例如，N可為2、3、4、5、7、9或12，且以下將給出 一些實例。該多邊形剖面可具有任意數目的邊，諸如4、 5、6、7、8或9。或者，該剖面根本不是多邊形，而是可 為圓形或橢圓。 圖3更詳細地展示該等光源陣列丨及其等之佈局。此處， 每個陣列1係大體上相同且包括複數個發光裝置13(諸如 LED)。该等光源陣列1可包括介於5與250個之間，及通常 介於70與150個之間的光源β 一高密度封裝的LED陣列可 具有一兩EPI密度，較佳的是介於5%與7〇%之間，更佳的 是介於15%與50%之間。 每個陣列可進一步包括若干組（例如2至8組）發射不同顏 色之光源，例如一組紅色LED、一組藍色LED及一組綠色 154454.doc 201200802 LED。根據另一實例，該等光源陣列包含具有白色（W)、 紅色（R)、綠色（G)、藍色（B)或琥珀色（A)、青色（C)、深紅 色（dR)及/或深藍色（dB)發射光譜之LED。藉由其等之組 合，可獲得落於由WRGBAdRdB開始之LED之顏色座標所 組成之顏色空間内的任何所要之光譜。亦可能獲得其他組 合，諸如中性白色與暖白色（NW+WW)、與冷白色之組合 (例如 CW+WW)、(RGBA)、(RGBAW)、(RGBW)、 (RGBAC)、（RGBAdR)、（RGBACdR)及（RGBACdRW)。 該等光源陣列可相對於彼此旋轉以便避免對稱。例如， 在具有三個光源陣列1之所繪示的情況下，應將該等光源 陣列1旋轉與120度不同之一角度。 每個光源陣列之流明輸出可約為1 klm至10 klm，且藉由 將若干光源陣列組合，該照明系統之經組合的流明輸出可 為40 klm或更大。 相鄰光源陣列之間的該距離L可介於一 LED陣列之該有 效直徑的0.5倍與2倍之間，且在給定的實例中，此距離L 近似為0.8 D。 圖4a及4b繪示可如何使用相同的漏斗形反射器形成不同 的準直元件（簡單地藉由以不同的距離L將該等漏斗形反射 器交錯）。在圖4a中，該等反射器11已被放置成比在圖4b 中更靠近在一起。201200802 VI. INSTRUCTIONS: [Technical Fields of the Invention] The present invention relates to a point illumination system in which light from a plurality of light sources is collimated to achieve a high power point illumination. [Prior Art] A white light source having a color filter has been widely used in point lighting applications such as scene setting or other atmosphere establishment lighting. Recently, illumination systems having colored light sources, such as light emitting diodes (LEDs), have been developed as an alternative. The use of a colored light source eliminates the need for filtering and therefore increases efficiency and color consistency (replacement of the filter may introduce variations). In addition, the emitted color can be changed electronically' and all available colors are always available without any hardware replacement. As the performance of LEDs improves, the market for such systems is growing rapidly. In point lighting applications, the uniformity of the emitted light is critical. An example of a lighting system for point illumination is described in US 6,200,002, wherein a tubular collimator collimates light from an array of light sources disposed in the entrance of the collimator. Multi-channel, high-throughput applications such as CDM replacement spots and multi-color entertainment spots (for theater/tours/stage/studio) require high-light rounds. Some applications (such as tours (temporary equipment, such as pop concerts, etc.) and buildings, households, and street lighting) have a light output of approximately 10 klmi5〇1〇1. To achieve a light output in this order of magnitude, a large 4 points (form 2 LED) is required and the point sources must be packaged in a small array of 154454.doc 201200802. The performance of one of the individual LED packages is usually limited. On the other hand, dedicated large LED arrays have a low yield in nature, and for many applications, dedicated large LED arrays are too expensive. SUMMARY OF THE INVENTION One object of the present invention is to provide a point illumination system with sufficient light output with satisfactory 'color mixing and collimation, which can be manufactured or assembled at high yields. This and other objects are achieved by a point illumination system comprising a collimating element and a set of N light source arrays, each light source array comprising a plurality of light sources. The collimating element is formed by a set of N funnel shaped reflectors, each funnel shaped reflector having a reflective inner surface, an inlet aperture and an outlet aperture 'the outlet aperture being larger than the inlet aperture, the funnel shaped reflector Arranged in a bundle such that all inlet apertures are at one end and all exit apertures are at an opposite end 'and wherein the funnel-shaped reflectors are truncated such that one of the reflectors facing one of the adjacent reflectors is The opposite ends are terminated such that the collimating elements have N inlet apertures leading to the N funnel shaped reflectors that merge into a single exit aperture. The N arrays of light sources are configured to emit light in one of the inlet apertures, respectively. * Thus the collimating element according to the invention receives light from N sources - and combines it to emit a beam from the single exit aperture. Light from each of the light arrays is initially guided and mixed by a single funnel-shaped reflector and then mixed with light from other light arrays. Thus, an improved mixing and collimation is achieved as compared to configuring the N funnel-shaped reflectors to abut each other and emit light from the N exit apertures. 154454.doc 201200802 The collimating element according to the present invention further seamlessly combines N individual beams into a beam such that there are no visible boundaries between the individual beams. The N light source arrays are preferably substantially identical. This provides an efficient process and achieves optimum efficiency of the collimating element. A symmetrical one can be avoided to rotate each substantially identical array of light sources about an optical axis. This collimation and optical mixing are further improved by avoiding symmetry. In the context of the background, a symmetric configuration of one of the plurality of light source arrays implies that the relative rotation of the parent array corresponds to the number of arrays. For example, if N = 3, the relative rotation between the arrays should not be 12 degrees to avoid symmetry. The truncated funnel-shaped reflectors are preferably arranged so closely together that the single outlet aperture is smaller than one of a plurality of exit apertures of the uncut funnel-shaped reflector (preferably than the combination) Small 1% to 20%). This design further enhances collimation and light mixing. A distance between adjacent arrays of light sources is preferably between 0.5 and 2 times the effective diameter of an array of light sources. According to an embodiment, the distance of the array of adjacent light sources is approximately equal to the effective diameter of an array of light sources. This distribution of arrays of light sources (and thus some of the inlet apertures of the collimating elements) has been shown to provide satisfactory alignment and mixing. One of the effective diameters of the single exit aperture is preferably one of the effective diameters of one of the light source arrays multiplied by 1.5 to 6 times N. This means that a beam width of light emitted from each of the light source arrays passes through the collimating element. Allow to widen to 15x to 6x. Each array of light sources can include at least one set of light sources configured to emit light of a first color and at least one set configured to emit a second color different from the first color 154454.doc • 6 · 201200802 The source of light. By having multiple colors in each array of light sources, the point illumination system can be controlled to emit a variety of colors. In this case, the light mixing of the collimating element of the present invention will comprise color mixing. Color mixing is effective within the optical device as compared to light mixing in the far field (e.g., on a wall). One of the collimating elements according to the present invention achieves an optical efficiency of more than 70%, which is challenging to obtain a collimating and hybrid optical device having high brightness. In this context, a set of light sources can be a single light source, or can be a group of light sources that are configured together. For example, a set of light sources can be provided in the form of a row of light sources in a two dimensional (2D) array. This number N can be any number greater than one. However, in several embodiments currently considered, this number > ^ belongs to the set [2, 3, 4, 5, 7, 9, 12]. What has not been shown is that in this case of a number N, the funnel reflector can be parentally corrected to provide satisfactory light mixing. [Embodiment] Fig. 1 shows an exploded perspective view of an illumination system suitable for point illumination of an atmosphere establishing illumination, such as scene setting. Here, the illumination system i includes three light source arrays (such as an LED array) mounted on a carrier such as a printed circuit board (?(:8)3), the carrier being disposed on a heat sink 4 The heat sink 4 is then disposed on a heat sink 5. The lighting system 1 further includes a collimating element 2 having a reflective inner surface. The collimating element has three inlet apertures 7 and a single outlet. Holes 8, each of which is aligned with the array of light sources 1. At the exit aperture 8 of the collimating element 2, a diffusing member (here in the form of an optical diffusing sheet 9) and/or is provided. Or step I54454.doc 201200802 collimating the beam of the field lens. The system further includes circuitry for powering and controlling the array of light sources, but because the circuit is not necessary for the disclosure of the present invention The description of the circuit has been omitted for the sake of brevity. A spacer ring 14 can serve as a mechanical and optical interface between the array of light sources and the collimating element. The collimating element 2 (shown in more detail in Figure 2) Component) Corresponding to the shape of one of the two funnel-shaped tubular reflectors 11, the reflectors are mutually staggered. Here, each tubular reflector has a polygonal cross section in a plane perpendicular to the optical axis of the illumination system, In the illustrated case, the side of the seven sides (a heptagonal profile) β that is in contact with the edges of several adjacent reflectors has been truncated to terminate before the ends of the collimating element. The reflectors merge into an exit aperture 8. The entrance apertures 7a, 7b, 7c of the reflectors each form one of the inlet apertures of the collimating element 2. The optical axes of the individual reflectors 11 can face the entire The optical axis of the illumination system is slightly tilted. This further improves the combination of the beams from the individual source arrays into a single beam. In Figure 2, the reflective inner surfaces of the reflectors 11a through 11c are straight. The surface may also be a convex shape as seen from the optical axis of each entrance aperture, that is, a louver eight-shaped reflector may be formed. It is also possible to have a concave inner surface. It is possible to assemble or assemble a plurality of parts by one. single The component (for example, by injection molding or rapid prototyping) is made of a polymeric material. The body of the 154454.doc 201200802 straight 70 piece. Then, a highly reflective foil (such as Mir〇 foil) can be attached (for example) Glueing onto the inner surface of the body. Alternatively, the inner surface may be coated with a high mirror. The reflective component of the envelope may be relatively thin with a thickness between 0.5 mm and 10 mm, preferably Between 7 mm and .5 mm, preferably between 〇·8 mm and 2 mm. The reflective component can be in contact with the heat sink 4 or the heat sink 5, and preferably A reflective member is attached to the plate 3 on which the array of light sources is mounted. Optionally, a POC is disposed at or near the exit aperture 8 of the collimating element. It should be noted that the illumination system can generally include any number N of substantially identical arrays of light sources and corresponding numbers of funnel-shaped reflectors that are parentally altered to form one having an exit aperture 8 Collimating element 2. For example, N may be 2, 3, 4, 5, 7, 9, or 12, and some examples will be given below. The polygonal section can have any number of sides, such as 4, 5, 6, 7, 8, or 9. Alternatively, the profile is not a polygon at all, but may be a circle or an ellipse. Figure 3 shows the layout of the array of light sources and their etc. in more detail. Here, each array 1 is substantially identical and includes a plurality of illumination devices 13 (such as LEDs). The light source array 1 may comprise between 5 and 250, and typically between 70 and 150 light sources. A high density package of LED arrays may have one or two EPI densities, preferably between 5 Between % and 7〇%, and more preferably between 15% and 50%. Each array may further comprise sets (e.g., 2 to 8 sets) of light sources that emit different colors, such as a set of red LEDs, a set of blue LEDs, and a set of green 154454.doc 201200802 LEDs. According to another example, the array of light sources comprises white (W), red (R), green (G), blue (B) or amber (A), cyan (C), deep red (dR) and / Or dark blue (dB) emission spectrum LED. By combining them, any desired spectrum that falls within the color space of the color coordinates of the LEDs starting with WRGBAdRdB can be obtained. Other combinations are also possible, such as neutral white and warm white (NW+WW), combined with cool white (eg CW+WW), (RGBA), (RGBAW), (RGBW), (RGBAC), (RGBAdR) , (RGBACdR) and (RGBACdRW). The arrays of light sources can be rotated relative to each other to avoid symmetry. For example, in the case of having three light source arrays 1, the light source array 1 should be rotated at an angle different from 120 degrees. The lumen output of each array of light sources can be from about 1 klm to 10 klm, and by combining several arrays of light sources, the combined lumen output of the illumination system can be 40 klm or greater. The distance L between adjacent arrays of light sources can be between 0.5 and 2 times the effective diameter of an array of LEDs, and in a given example, this distance L is approximately 0.8 D. Figures 4a and 4b illustrate how different collimating elements can be formed using the same funnel-shaped reflector (simply interlaced by different funnel-shaped reflectors at different distances L). In Figure 4a, the reflectors 11 have been placed closer together than in Figure 4b.
為繪示性能，圖5展示對圖2中之該準直元件2之光束整 形功能的一模擬。顯然該準直元件可將來自光源（諸如 LED)之一朗伯（Lambertian)光分佈轉換成1〇〇至40°FWHM 154454.doc •10· 201200802 之所需的光束形狀。 在多彩色光源陣列1之情況下，該準直元件應進 供令人滿意之顏色混合，亦即—準直及混合元件2。 一步提 為貫現一健固之產品，最好在該等光源陣列之頂部上或 該等光源陣列之至少若干部件上塗敷一透明保護層。然 後’保護連接至該電路之該等組件（例如led)及導線接^ 以防潮濕、污染及非所欲之損壞。此可藉切懸浮（如圓 頂封裝体）、上層模製或底部填充技術予以實現。 一可透射部件可進一步直接配置在每個光源陣列1的頂 部上。該可透射部件可為—單—透鏡或曲面，或為包括多 個透鏡、微結構或平面元件之部件。此一可透射部件可包 括一可透射陶瓷材料、一大體上可透射的玻璃或聚合箔材 料。該可透射部件可進一步包括直接與該LED陣列接觸之 一可透射矽層以改善光學光輸出耦合。該可透射部件亦可 包括表面具有透鏡形狀之光學結構（諸如一微透鏡陣列）。 為進一步改善該照明系統之該光輸出之均勻性同時保持 輸出效率之降低為最小，該照明系統i 〇可有利地包括配置 在該管狀反射器2之出口孔隙8處之一光學漫射構件9。因 為該光在靠近該光軸處一般相對均勻，所以該光漫射構件 9在該處具有比離該光轴更遠處更低的一漫射能力。例 如’此可藉由提供包括散射粒子之一膜達成，其中散射粒 子之濃度隨著離該照明系統10之光軸之距離增加而增加。 或者，該光學漫射構件9在其中間具有一孔，且因此並不 吸收或散射靠近該照明系統10之光軸之該照明系統1 〇所输 154454.doc 201200802 出的光的任意光。作為對該等散射粒子之 該光學漫射構件9之漫射㉟六γ⑼ 甘代次補充 全像圖牵川车 用其他方式（諸如透過一 王像圖案及/或一表面起伏、脊相 椹# <51 # 。應注意的是，該光漫射 構件9可有利地由一聚合材料製成。 /6展示藉由僅將兩個管狀反射器交錯而形成之一準直 元件之一剖面。 圖7a及7b展示藉由將四個读 埘四個七邊形管狀反射器交錯而形成 與右 兀件之剖面的兩個不同實例。在圖7a中，該等 官狀反射II之間的距離比圖％中的距離小。 ―圖8展示藉由將五個八邊形反射器交錯而形成之一準直 元件之剖面的一實例。 圖9展示藉由將準吉云| +直疋件與七個八邊形管狀反射器交錯 而形成之一準直元件之剖面的一實例。 此外，熟習此項技術者可自對圖式、揭示内容及隨附申 請專利範圍之-研習，在實踐本發明中理解及實現對所揭 不之實施例之若干變動。例如，可採用其他尺寸及/或尺 寸之間的其他關係。亦可應用除所揭示之幾何形狀以外之 其他幾何形狀。在申請專利範圍巾，字組「包括」不排除 其他：件或步驟’且不定冠詞「一」不排除複數。一單一 處理态或其他單元可實現申請專利範圍中所敘述之若干項 目的功能。某些措施敛述在相互不同的從屬請求項中，但 就此事實，並不表示此等措施之組合不能利用以更具有 優越性。 【圖式簡單說明】 154454.doc 201200802 圖1係根據本發明之一實施例之一照明系統的一透視 圖。 圖2更詳細地展不圖1中之該準直元件。 圖3係圖1中之該照明系統之發光裝置之—平面圖。 圖4a至圖4b係由三個經交錯之七邊形管狀反射器所形成 之若干準直元件之平面示意圖。 圖5係圖4a中之該準直元件之—模擬光束輪扉。 圖6係由兩個經交錯之七邊形管狀反射器所形成之一準 直元件之一示意剖面圖。 圖7a至圖7b係由四餘交錯之七邊形管狀反射器所形成 之若干準直元件之示意剖面圖。 圖8係由五個經交錯之八邊形管狀反射器所形成之一準 直元件之一示意剖面圖。 圖9係由七個經交錯之八邊形管狀反射器所形成之一準 直元件之一示意剖面圖。 【主要元件符號說明】 1 N個光源陣列 2 準直元件 3 印刷電路板 4 散熱器 5 熱槽 7 N個入口孔隙 7a 入口孔隙 7b 入口孔隙 154454.doc -13- 201200802 7c 入口孔隙 8 出口孔隙 9 光學漫射薄片 10 點照明系統 11 N個漏斗形反射器 11a 漏斗形反射器 lib 漏斗形反射器 11c 漏斗形反射器 12 複數個光源/邊 13 發光裝置 14 隔片環 154454.doc -14 -To illustrate the performance, Figure 5 shows a simulation of the beam shaping function of the collimating element 2 of Figure 2. It is apparent that the collimating element can convert a Lambertian light distribution from one of the light sources (such as LEDs) into a desired beam shape from 1 〇〇 to 40 °FWHM 154454.doc •10·201200802. In the case of a multi-color source array 1, the collimating element should be provided with a satisfactory color mixing, i.e., collimating and mixing elements 2. In one step, it is preferred to apply a transparent protective layer on top of the array of light sources or on at least some of the components of the array of light sources. These components (such as led) and wires connected to the circuit are then protected from moisture, contamination and undesired damage. This can be achieved by cutting suspension (such as a dome package), upper molding or underfill technology. A transmissive member can be further disposed directly on the top of each of the light source arrays 1. The transmissive member can be a single lens or curved surface or a component comprising a plurality of lenses, microstructures or planar elements. The transmissive member can comprise a transmissive ceramic material, a substantially transmissive glass or polymeric foil material. The transmissive component can further include a transmissive germanium layer in direct contact with the array of LEDs to improve optical light output coupling. The transmissive member may also include an optical structure (such as a microlens array) having a lens shape on its surface. To further improve the uniformity of the light output of the illumination system while minimizing the reduction in output efficiency, the illumination system i 〇 may advantageously comprise one of the optical diffusing members 9 disposed at the exit aperture 8 of the tubular reflector 2 . Since the light is generally relatively uniform near the optical axis, the light diffusing member 9 has a lower diffusing power there than at a position farther from the optical axis. For example, this can be achieved by providing a film comprising one of the scattering particles, wherein the concentration of the scattering particles increases as the distance from the optical axis of the illumination system 10 increases. Alternatively, the optical diffusing member 9 has a hole in between and thus does not absorb or scatter any light from the illumination system 1 靠近 154454.doc 201200802 that is adjacent to the optical axis of the illumination system 10. The diffuse 35 gamma (9) gamma sub-complementary hologram of the optical diffusing member 9 as the scattering particles is used in other ways (such as through a king image pattern and/or a surface undulation, ridge phase 椹# <51 #. It should be noted that the light diffusing member 9 may advantageously be made of a polymeric material. /6 shows a profile of one of the collimating elements formed by merely interlacing the two tubular reflectors. Figures 7a and 7b show two different examples of the profile formed with the right heel by staggering four read 埘 four heptagonal tubular reflectors. In Figure 7a, the distance between the official reflections II Figure 6 shows an example of a section of a collimating element formed by interlacing five octagonal reflectors. Figure 9 shows a quasi-jiyun | An example of a cross-section of a collimating element formed by interlacing with seven octagonal tubular reflectors. Further, those skilled in the art can learn from the drawings, the disclosure, and the scope of the accompanying patent application. Several variations of the disclosed embodiments are understood and effected in the present invention. For example, other relationships between other sizes and/or sizes may be employed. Geometry other than the disclosed geometries may also be applied. In the scope of the patent application, the word "include" does not exclude other: pieces or steps' And the indefinite article "a" does not exclude the plural. A single processing or other unit may fulfill the function of several items described in the scope of the application. Some of the measures are recited in mutually different dependent claims, but in this case It does not mean that the combination of such measures cannot be utilized to be more advantageous. [Simple Description of the Drawings] 154454.doc 201200802 Figure 1 is a perspective view of an illumination system in accordance with an embodiment of the present invention. Figure 2 shows in more detail Figure 3 is a plan view of the illumination device of the illumination system of Figure 1. Figures 4a to 4b are a plurality of quasi-forms formed by three interlaced seven-sided tubular reflectors. A schematic plan view of a straight element. Figure 5 is an analog beam rim of the collimating element of Figure 4a. Figure 6 is a collimating element formed by two staggered heptagonal tubular reflectors. Figure 7a to Figure 7b are schematic cross-sectional views of a plurality of collimating elements formed by four interdigitated heptagonal tubular reflectors. Figure 8 is composed of five interlaced octagonal tubular reflectors. A schematic cross-sectional view of one of the collimating elements is formed. Figure 9 is a schematic cross-sectional view of one of the collimating elements formed by seven interlaced octagonal tubular reflectors. [Main Symbol Description] 1 N Light Sources Array 2 Collimating element 3 Printed circuit board 4 Heat sink 5 Heat sink 7 N inlet aperture 7a Inlet aperture 7b Inlet aperture 154454.doc -13- 201200802 7c Inlet aperture 8 Outlet aperture 9 Optical diffusing sheet 10 Point lighting system 11 N Funnel-shaped reflector 11a funnel-shaped reflector lib funnel-shaped reflector 11c funnel-shaped reflector 12 plurality of light sources/edge 13 illuminating device 14 spacer ring 154454.doc -14 -