M422684 五、新型說明： 【新型所屬之技術領域】 本創作係屬一種微型投影光源系統改良，尤指改良一種微型 才又影機之光學引擎’以增進光源效率所屬者。 【先前技術】 隨著投影機微型化的技術發展，微型投影鏡頭之發光源，須 配置超小型光源，以適用於微型投影機之光學引擎系統，且為 了符合市場對於最新投影機商品之微小化、輕量化及隨身攜帶 化之使用需求’致已由傳統燈罩之收光結構改良以發光二極體 為其光源的替代結構。 如前述以發光二極體為光源的技術，因其使用效益極高，但 相對於雷射光’則因綠光雷射尚待突破，集成紅、藍、綠三色 光源仍屬不易，且成本也高，因而微型投影機所使用之發光 源，仍以發光二極體為主流趨勢；惟就發光二極體發光之方向 性與聚焦性卻不如雷射效果好’因此有必要就光源系統結構之 改良來補強其缺點’並讓成像於屏幕亮度之均句性能一併加以 改良。 如本創作之微型投影光源系統改良，因採三片焦距為正之透 鏡為準直器，可將發光二極體發出之光源收斂為平行光，且以 臨近發光二極體的透鏡面為平面’致能在有限的距離内收斂住 最多的發散光源。 3 如本創作之微型投影光源系統改良’因採三爿焦距為正之透 鏡為準直器，可大幅度地增加聚光能力，以讓光源系統獲得更 高的效率0 如本創作之微型投影光源系统改良，因採二片為組的透鏡陣 列及兩焦距為正的正型透鏡’致可將收斂之平行光轉化為均勻 光投射於偏極分光鏡，並將垂直偏振光反射至反射式液晶面 板0 如本創作之微型投影光源系統改良，因採二片為組的透鏡陣 列’除可將入射之平行光分割成一陣列二次光源，且可讓陣列 中的每一個二次光源皆會透遇其後的正型透鏡適當地放大至 反射式液晶面板，如此當陣列中每個二次光源重疊於反射式液 晶面板’將會互相補償，進而達到光之均勻性。 【新型内容】 本創作係屬一種微型投影光源系統改良，係依序由發光二極 體、準直器、透鏡陣列、正型透鏡、偏極分光鏡及反射式液晶 面板為間距排列組合所成，其中發光二極體，係發光源β 如本創作係屬一種微型投影光源系統改良，係依序由發光二 極體、準直器、透鏡陣列、正型透鏡、偏極分光鏡及反射式液 晶面板為間距排列組合所成，其中準直器，係三片為組間距排 列，以將發光二極體發出之光源轉化為平行光。 如本創作係屬一種微型投影光源系統改良，係依序由發光二 極體、準轉、透鏡_、賴職、驗分絲及反射式液 晶面板為間距排列組合所成，其中透鏡陣列，係二片為組間距 排列，以將平行光源均勻化。 如本創作係屬-種微型投影光源系統改良，係依序由發光二 極體、準直器、透鏡陣列、正型透鏡、偏極分光鏡及反射式液 晶面板為間距排顺合所成，其巾正n透鏡U為組間距 排列，以將透鏡陣列之光源為放大適當倍率投射於偏極分光 鏡，再反射至反射式液晶面板上。 如本創作係屬一種微型投影光源系統改良，係依序由發光二 極體'準直器、透鏡陣列、正型透鏡、偏極分光鏡及反射式液 晶面板為間距排列組合所成，其中偏極分光鏡，係讓水平偏振 光穿透’垂直偏振光則反射至反射式液晶面板。 如本創作係屬一種微型投影光源系統改良，係依序由發光二 極體、準直器、透鏡陣列、正型透鏡、偏極分光鏡及反射式液 晶面板為間距排列組合所成，其中反射式液晶面板，係將光源 反射並調變出欲投影至屏幕之光訊號。 【實施方式】 請參閱第一圖係本創作微型投影光源系統改良之元件組合 示意圖，依其使用於微型投影機(Pico)之光源系統〗0，係依 序間距排列而分別由發光二極體11、準直器12、13、14、透 鏡陣列15、16、正型透鏡17，18、偏極分光鏡19及反射式液 晶面板20組合所成，亦即依其光源聚焦路徑21由前至後為間 距排列’其中發光二極體(LED)ll，係作為光學引擎之光源； 其中準直器(Collimator)12、13、14，係三片為组間距排列，以 將發光二極體11發出之光源轉化為平行光；其中透鏡陣列 (Lens Array)15、16，係二片為組間距排列，以將平行光源均勻 化，而透鏡陣列15、16中每個透鏡的焦距限於2mm〜10mm内始 能有較好的效果；其中正型透鏡17、18，係二片為組間距排 列，以將透鏡陣列15、16之光源為放大適當倍率投射於偏極 分光鏡19 ’再反射至反射式液晶面板20上，惟前者之焦距必 須大於後者之焦距；.其中偏極分光鏡（Polarizing be棚 splitter-PBS)19 ’係讓水平偏振光穿透，垂直偏振光則反射 至反射式液晶面板；其中反射式液晶面板(LCOS)20，係將光 源反射並調變出欲投影至屏幕之光訊號。 續請參闓第一圖，其中本創作微型投影機之光源系統10， 已縮減了光源系统佔有之體積，而依其準直器12、13、14係 使用三片焦距為正之透鏡，可將發光二極體11發出之光源收 斂為平行光’又前準直器12之面對發光二極體11的面為平面 之故’致能在有限的距離内收斂住最多的發散光源。 仍請參閱第一圖’其中本創作之光源系統1〇，依其透鏡陣 列〗5、〗6及兩焦距為正的正型透鏡】7、，可將收斂之平行 光轉化為均勻光，投射於偏極分光鏡19，並將垂直偏振光反 射至反射式液晶面板2〇 ;其中透鏡陣列15、16的用途是將入 Μ42·2684 射之平行光分割成一陣列二次光源，而陣列中的每一個二次光 源，皆會透過位於其後的正型透鏡17、18，為適當地放大至 反射式液晶面板20 ’且當陣列中每個二次光源重疊於反射式 液晶面板20時，將因互相補償進而達到光之均勻性。 【圖式簡單說明】 第一圖係本創作微型投影光源系統改良之元件組合示意圖βM422684 V. New Description: [New Technology Field] This creation is a kind of micro-projection light source system improvement, especially to improve the optical engine of a miniature camera to improve the efficiency of light source. [Prior Art] With the development of the miniaturization technology of the projector, the illumination source of the micro projection lens must be equipped with an ultra-small light source for the optical engine system of the micro projector, and in order to meet the market miniaturization of the latest projector products. The need for lightweight, portable and portable use has improved the light-receiving structure of the conventional lampshade with an alternative structure of the light-emitting diode as its light source. As described above, the technology using the light-emitting diode as the light source is extremely high in use efficiency, but the green light laser is still to be broken compared to the laser light. It is still difficult to integrate the red, blue and green light sources, and the cost is still low. It is also high, so the light source used in the micro projector still has the trend of the light emitting diode; however, the directivity and focusing of the light emitting diode are not as good as the laser effect. Therefore, it is necessary to configure the light source system. The improvement is to reinforce its shortcomings' and to improve the uniformity of the image on the screen brightness. As the micro-projection light source system of the present invention is improved, since the three lenses with the positive focal length are collimators, the light source emitted by the light-emitting diode can be converged into parallel light, and the lens surface adjacent to the light-emitting diode is plane' Enables convergence of the most divergent light sources over a limited distance. 3 As the micro-projection light source system of this creation is improved, 'the lens with the focal length of the three-focus lens is the collimator, which can greatly increase the concentrating ability, so that the light source system can obtain higher efficiency. The system is improved, because the two lens arrays and the positive lens with two positive focal lengths can convert the convergent parallel light into uniform light and project it on the polarizing beam splitter, and reflect the vertically polarized light to the reflective liquid crystal. Panel 0, as the micro-projection light source system of the present invention is improved, the lens array of the two-piece group can be divided into an array of secondary light sources, and each secondary light source in the array can be transparent. The subsequent positive lens is appropriately enlarged to the reflective liquid crystal panel, so that each secondary light source in the array is superimposed on the reflective liquid crystal panel' to compensate each other, thereby achieving uniformity of light. [New Content] This creation is a kind of micro-projection light source system. It is composed of a light-emitting diode, a collimator, a lens array, a positive lens, a polarizing beam splitter and a reflective liquid crystal panel. The light-emitting diode, the light-emitting source β, is a micro-projection light source system modified by the present invention, which is sequentially composed of a light-emitting diode, a collimator, a lens array, a positive lens, a polarizing beam splitter and a reflection type. The liquid crystal panel is formed by a combination of pitch arrangement, wherein the collimator, three pieces are arranged in a group spacing, to convert the light source emitted by the light emitting diode into parallel light. For example, the creation system is a kind of micro-projection light source system, which is formed by a combination of a light-emitting diode, a quasi-rotation, a lens, a Lai, a test wire and a reflective liquid crystal panel, wherein the lens array is The two sheets are arranged in a group spacing to homogenize the parallel light sources. Such as the creation of the genus-type micro-projection light source system, the sequence is sequentially formed by the light-emitting diode, the collimator, the lens array, the positive lens, the polarizing beam splitter and the reflective liquid crystal panel. The towel positive n lenses U are arranged at a group pitch, so that the light source of the lens array is projected to the polarizing beam splitter at an appropriate magnification and then reflected onto the reflective liquid crystal panel. For example, this creation is a kind of micro-projection light source system, which is formed by a combination of a light-emitting diode 'collimator, a lens array, a positive lens, a polarizing beam splitter and a reflective liquid crystal panel. A pole splitter that allows horizontally polarized light to penetrate 'vertically polarized light' and is reflected to a reflective liquid crystal panel. For example, this creation is a kind of micro-projection light source system, which is formed by a combination of a light-emitting diode, a collimator, a lens array, a positive lens, a polarizing beam splitter and a reflective liquid crystal panel. The liquid crystal panel reflects and modulates the light source to be projected onto the screen. [Embodiment] Please refer to the first figure for the improved component combination diagram of the micro-projection light source system. According to the light source system of the pico projector (Pico), the light source system is arranged in sequence and separately by the light-emitting diode. 11. The collimators 12, 13, and 14, the lens arrays 15, 16, the positive lenses 17, 18, the polarizing beamsplitter 19, and the reflective liquid crystal panel 20 are combined, that is, according to the light source focusing path 21 from the front to the After the arrangement of the spacing, the light-emitting diode (LED) 11 is used as the light source of the optical engine; wherein the collimators 12, 13, and 14 are arranged in groups at a distance to form the light-emitting diode 11 The emitted light source is converted into parallel light; wherein the Lens Arrays 15, 16 are arranged in groups to homogenize the parallel light sources, and the focal length of each lens in the lens arrays 15, 16 is limited to 2 mm to 10 mm. The inner lens can have a better effect; wherein the positive lenses 17 and 18 are arranged in a group spacing to project the light sources of the lens arrays 15 and 16 to the polarizing beam splitter 19' at a suitable magnification for re-reflection to reflection. On the liquid crystal panel 20, only the former The focal length must be greater than the focal length of the latter; the polarizing bezel splitter-PBS 19' allows horizontally polarized light to pass through, and the vertically polarized light is reflected to the reflective liquid crystal panel; the reflective liquid crystal panel (LCOS) 20 , the light source is reflected and modulated to the optical signal to be projected onto the screen. Continue to refer to the first picture, in which the light source system 10 of the micro-projector has reduced the volume occupied by the light source system, and according to its collimator 12, 13, 14 three lenses with a positive focal length, can be The light source emitted by the light-emitting diode 11 converges to parallel light' and the surface of the front collimator 12 facing the light-emitting diode 11 is flat, enabling the most divergent light source to converge within a limited distance. Still refer to the first figure, where the light source system of the present invention is 1〇, according to its lens array〗 5, 〗 6 and the positive lens with positive focal lengths. 7, can convert the convergent parallel light into uniform light, projecting The polarizing beam splitter 19 reflects the vertically polarized light to the reflective liquid crystal panel 2; wherein the lens arrays 15 and 16 are used to split the parallel light incident on the Μ42·2684 into an array of secondary light sources in the array. Each of the secondary light sources will be appropriately enlarged to the reflective liquid crystal panel 20' through the positive lenses 17, 18 located therebelow and when each secondary light source in the array is superposed on the reflective liquid crystal panel 20, The uniformity of light is achieved by mutual compensation. [Simple description of the diagram] The first picture is a simplified component combination diagram of the present miniature projection light source system.
【主要元件符號說明】 10—光源系統 11 一發光二極體 13-(中)準直器 後)準直器 16-{後)透鏡陣列 1Β—(後)正型透鏡 20—反射式液晶面板·[Main component symbol description] 10—light source system 11 one light-emitting diode 13-(middle) collimator) collimator 16-{post) lens array 1Β—(rear) positive lens 20—reflective liquid crystal panel ·
12—(前)準直器 15—(前)透鏡陣列 17—{前)正型透鏡 19一偏極分光鏡 21—光源聚焦路徑 712—(Front) Collimator 15—(Front) Lens Array 17—{Front) Positive Lens 19 A Polarizing Beam Mirror 21—Light Source Focus Path 7