201128287 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種投影機。 [0002] [先前技術3 投影機可採用鹵素燈或半導體發光二極體（Light Emitting Diodes ， LED) 作為光源 。但是鹵素燈的壽命較短 ，一般為一千小時左右，而且鹵素燈一般只有的能 量轉換成光能，其他的能量都變成熱量。相對於鹵素燈 ，LED的能量利用率比較高，因此廣泛應用於投影機光源 中。先前的投影機LED光源一般包括紅色LED光源、綠色 LED光源及藍色LED光源，同時為了提高投影機所投射的 圖像的光亮度，因此每種單色光源珣包括複數LED，從而 形成三個光源陣列，使得投影機的體積被大大增大。 [0003] 【發明内容】 有鑒於此，有必要提供一種小型化的投影機。 [0004] 〇 一種投影機，其包括_個單色光源陣列、一個分光裝置 、一個光轉換裝置及一個光導管*所述單色光源陣列用 於發出第一單色光。所述分光裝置設置於所述第一單色 光的光路上’用於透射部分所述第一單色光及反射部分 所述第一單色光。所述光轉換裝置設置於所述分光裝置 的透射光路上，用於將所述第一單色光轉換為第二單色 光及第三單色光並將所述第二單色光及第三單色光反射 到所述分光裝置。所述分光裝置還用於反射所述第二單 色光及第三單色光。所述光導管設置於所述分光裝置的 反射光路上，用於將所述第一單色光、所述第二單色光 099103090 表單編號A0101 第5頁/共16頁 0992005825-0 201128287 及所述第三單色光混合為白光。 [0005] 一種投影機，其包括一個單色光源陣列、一個分光裝置 、一個光轉換裝置及一個光導管。所述單色光源陣列用 於發出一第一單色光。所述分光裝置設置於所述第一單 色光的光路上，用於透射所述第一單色光。所述光轉換 裝置設置於所述分光裝置的透射光路上，用於將所述第 一單色光轉換為白光，並將所述白光反射到所述分光裝 置。所述分光裝置還用於反射所述白光。所述光導管設 置於所述分光裝置的反射光路上。 [0006] 本發明的投影機，利用一個單色光源陣列與光轉換裝置 ，就能夠得到一個白色光源，並且配合相應的光路設計 ，使得在提高單色光源陣列的光利用率的同時，使投影 機更趨於小型化。 【實施方式】 [0007] 下面將結合附圖，對本發明作進一步的詳細說明。 [0008] 請參閱圖1，為本發明第一實施方式提供的一種投影機1 ，其包括沿光路依次設置的單色光源陣列10、反射鏡陣 列20、聚光透鏡組30、分光裝置40、凸透鏡50、光轉換 裝置60、中繼透鏡組70、反射鏡80、光導管90、色輪 100、TIR棱鏡系統110、數位微鏡裝置120及鏡頭130。 [0009] 所述單色光源陣列1 0用於發出第一單色光。在本實施方 式中，所述單色光源陣列10為一個3*7的LED陣列，形成 一個發光面較大的平行光源。所述第一單色光為藍光。 可以理解，所述單色光源陣列10也為鐳射二極體（Laser 099103090 表單編號A0101 第6頁/共16頁 0992005825-0 201128287201128287 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a projector. [0002] [Prior Art 3 The projector may employ a halogen lamp or a Light Emitting Diodes (LED) as a light source. However, halogen lamps have a short life span of about one thousand hours, and halogen lamps generally convert only energy into light energy, and other energy sources become heat. Compared to halogen lamps, LEDs have a high energy efficiency and are therefore widely used in projector light sources. The previous projector LED light source generally includes a red LED light source, a green LED light source and a blue LED light source, and in order to increase the brightness of the image projected by the projector, each monochromatic light source includes a plurality of LEDs, thereby forming three The array of light sources makes the volume of the projector greatly increased. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a miniaturized projector. [0004] A projector comprising an array of monochromatic light sources, a beam splitting device, a light converting device, and a light pipe * said monochromatic light source array for emitting a first monochromatic light. The spectroscopic device is disposed on the optical path of the first monochromatic light for transmitting part of the first monochromatic light and the reflecting portion of the first monochromatic light. The light conversion device is disposed on the transmitted light path of the light splitting device for converting the first monochromatic light into the second monochromatic light and the third monochromatic light and the second monochromatic light and the first Three monochromatic light is reflected to the spectroscopic device. The spectroscopic device is further configured to reflect the second monochromatic light and the third monochromatic light. The light guide is disposed on a reflected light path of the spectroscopic device, and is configured to: the first monochromatic light, the second monochromatic light, 099103090, form number A0101, page 5/16 pages, 0992005825-0 201128287 The third monochromatic light is mixed into white light. [0005] A projector comprising an array of monochromatic light sources, a beam splitting device, a light converting device, and a light pipe. The monochromatic source array is for emitting a first monochromatic light. The spectroscopic device is disposed on the optical path of the first monochromatic light for transmitting the first monochromatic light. The light conversion device is disposed on a transmitted light path of the spectroscopic device for converting the first monochromatic light into white light and reflecting the white light to the spectroscopic device. The spectroscopic device is further configured to reflect the white light. The light guide is disposed on a reflected light path of the spectroscopic device. [0006] The projector of the present invention can obtain a white light source by using a monochromatic light source array and a light conversion device, and is matched with a corresponding optical path design, so that the light utilization rate of the monochromatic light source array is improved while the projection is made. The machine is more compact. [Embodiment] The present invention will be further described in detail below with reference to the accompanying drawings. 1 is a projector 1 including a monochromatic light source array 10, a mirror array 20, a collecting lens group 30, a beam splitting device 40, which are sequentially disposed along an optical path, according to a first embodiment of the present invention. The convex lens 50, the light conversion device 60, the relay lens group 70, the mirror 80, the light guide 90, the color wheel 100, the TIR prism system 110, the digital micromirror device 120, and the lens 130. [0009] The monochromatic light source array 10 is for emitting first monochromatic light. In the present embodiment, the monochromatic source array 10 is a 3*7 LED array forming a parallel light source having a large illumination surface. The first monochromatic light is blue light. It can be understood that the monochromatic light source array 10 is also a laser diode (Laser 099103090 Form No. A0101 Page 6 / Total 16 Pages 0992005825-0 201128287
Diode，LD)陣歹ij 〇 [0010] 所述反射鏡陣列2 〇與單色光源陣列1 0的延彳申方向的夾角 為45度’用於將所述單色光源陣列1〇所發出的第一單色 光反射到所述聚光透鏡組3〇中。可以理解’由於LED或者 LD的准直性报高，即在光線的傳遞方向的發散角度較小 ’因此第一單色光全部被所述反射鏡陣列2 0反射，然後 全部被所述聚光透鏡組3〇進行彙聚，使得光線的利用率 局。 [0011] 所述聚光透鏡組30位於所述反射鏡陣列20反射的第一單 色光的出射光路上，用於彙聚所述單色光源陣列10所發 射出的平行光源。 [0012] 〇 所述分光裝置40由第一分光鏡41及第二分光鏡42交又組 合而成。所述第一分光鏡41朝向所述凸透鏡50傾斜，用 於反射10%的第一單色光，透射9〇%的第一單色光，並將 從所述光轉換裝置60出射的第二單色光龙第三單色光全 部進行透射。所述第二分光鏡42軿向所述聚光透鏡組3〇 傾斜，用於將所述第一單色光全部進行透射，並將從所 述光轉換裝置60出射的第二單色光及第三單色光全部進 行反射。可以理解，所述第一分光鏡41及第二分光鏡42 的分光特性係由其表面所鍍的膜層來決定的，可根據不 同需要來選擇合適的膜層，從而實現對光的反射及透射 〇 所述凸透鏡5G設置於所述分錄置4_透射光路上，即 所述分光裝置4〇及所述光轉換裝㈣之間1於將所述 099103090 表單編號A0101 第7頁/共16頁 0992005825-0 201128287 第—單色光進行彙聚。同時，所述凸透鏡50還能將所述 光轉換裝置60反射的光線大部分變成平行光線。 _4]所述捕換裝置则於將經過所述凸透鏡5Q的第一單色 光轉換為第三單色光及第三單色光，並將第二第三單 色光反射到所述分光裝置40中。所述光轉換裝置6〇包括 一個不透光的棊板61及塗敷在所述基板61上的螢光粉62 。可以理解，螢光粉62係一種能夠將外部能量轉換為光 的物質，其性質係根據化學成分來確定的。在本實施方 式中，所述螢光粉62係YAG螢光粉’其主要成分係釔鋁石 榴石（Y3A15012Ce)，可將藍光轉換成紅光及綠光。 [0015] 所述中繼透鏡組70包括相互垂直設置的第一中繼透鏡71 及第二中繼透鏡72。所述反射鏡80傾斜設置與所述第一 中繼透鏡71及第二中繼透鏡72之間，用於將從所述第一 中繼透鏡71出射的光線反射到所述第二中繼透鏡72中。 所述第一中繼透鏡Π位於所述分光裝置40的反射光路上 ’用於將分光裝置40反射的第一、第二及第三單色光轉 換成平行光。所述第二中礅透鏡72用於所述反射鏡80反 射出來的平行光彙聚，並射入所述光導管90。 [0016] 所述光導管90用於將所述第〆單色光、第二單色光及第 三單色光混合成亮度均勻的白光’並將所合成的白光投 射在高速旋轉的色輪100上。 [0017] 所述色輪1〇〇高速旋轉，用於將從所述光導管90出射的白 光分成紅光、綠光及藍光。 [0018] 所述TIR棱鏡系統110由兩塊棱鏡組成。所述TIR棱鏡系 099103090 表單編號A0101 第8頁/共16真 0992005825-0 201128287 [0019] Ο [0020]Diode, LD) 歹 歹 〇 [0010] The angle between the mirror array 2 〇 and the direction of the monochromatic source array 10 is 45 degrees 'for the monochromatic source array 1 The first monochromatic light is reflected into the collecting lens group 3''. It can be understood that 'the straightening of the LED or LD is high, that is, the divergence angle in the direction of light transmission is small', so the first monochromatic light is all reflected by the mirror array 20, and then all are concentrated by the light. The lens group 3〇 is concentrated to make the utilization of light. [0011] The condensing lens group 30 is located on an outgoing light path of the first single color light reflected by the mirror array 20 for concentrating the parallel light source emitted by the monochromatic light source array 10. [0012] The spectroscopic device 40 is formed by combining the first dichroic mirror 41 and the second dichroic mirror 42. The first beam splitter 41 is inclined toward the convex lens 50 for reflecting 10% of the first monochromatic light, transmitting 9% by mole of the first monochromatic light, and the second light emitted from the light conversion device 60 The third monochromatic light of the monochromatic light dragon is all transmitted. The second beam splitter 42 is tilted toward the collecting lens group 3 for transmitting the first monochromatic light and the second monochromatic light emitted from the light converting device 60 and The third monochromatic light is totally reflected. It can be understood that the spectral characteristics of the first beam splitter 41 and the second beam splitter 42 are determined by the film layer coated on the surface thereof, and a suitable film layer can be selected according to different needs, thereby realizing reflection of light and The transmission lens 5G is disposed on the recording device 4_transmitted light path, that is, between the light splitting device 4A and the light conversion device (4), and the 099103090 form number A0101 page 7/16 Page 0992005825-0 201128287 The first - monochromatic light is concentrated. At the same time, the convex lens 50 can also convert most of the light reflected by the light conversion device 60 into parallel rays. _4] the switching device converts the first monochromatic light passing through the convex lens 5Q into a third monochromatic light and a third monochromatic light, and reflects the second third monochromatic light to the spectroscopic device 40. The light conversion device 6A includes an opaque enamel plate 61 and phosphor powder 62 coated on the substrate 61. It is understood that the phosphor powder 62 is a substance capable of converting external energy into light, and its properties are determined based on chemical composition. In the present embodiment, the phosphor powder 62 is a YAG phosphor powder whose main component is yttrium aluminum garnet (Y3A15012Ce), which converts blue light into red light and green light. [0015] The relay lens group 70 includes a first relay lens 71 and a second relay lens 72 that are disposed perpendicular to each other. The mirror 80 is obliquely disposed between the first relay lens 71 and the second relay lens 72 for reflecting light emitted from the first relay lens 71 to the second relay lens 72. The first relay lens Π is located on the reflected light path of the spectroscopic device 40 for converting the first, second and third monochromatic lights reflected by the spectroscopic device 40 into parallel light. The second centering lens 72 is used to converge the parallel light reflected by the mirror 80 and into the light pipe 90. [0016] The light guide 90 is configured to mix the second monochromatic light, the second monochromatic light, and the third monochromatic light into white light of uniform brightness and project the synthesized white light on a high-speed rotating color wheel. 100 on. [0017] The color wheel 1 is rotated at a high speed for dividing white light emitted from the light pipe 90 into red light, green light, and blue light. [0018] The TIR prism system 110 is composed of two prisms. The TIR prism system 099103090 Form No. A0101 Page 8 / Total 16 True 0992005825-0 201128287 [0019] Ο [0020]
[0021] G 099103090 統110可使進入其内部的光束不斷的發生反射及折射，從 而改變光束的方向。當從中繼透鏡組射出的光束進入 所述TIR棱鏡系統11 0之後，光束的方向就被改變成數位 微鏡裝置120工作所需的方向和角度。且當從數位微鏡裝 置120中射出的光束再次進入所述TIR棱鏡系統110之後 ，光束的方向就被改變’使光束可進入所述鏡頭130中。 所述數位微鏡裝置120為一微鏡反射陣列，這些微鏡受圖 像訊號的控制，各微鏡獨立翻轉，分別處於開或關狀態 ，形成一個圖像源，其中開狀態的微鏡將從TIR棱鏡系統 110射出的光束反射回ΤΙβ棱鏡系統110 ’義經過所述TIR 棱鏡系統11〇被反射入鏡頭I30。 所述鏡頭130位於先經過數位微鏡裝置120再經過TIR棱 鏡系統110的光線的出射光路中，用於接政從TIR棱鏡系 V. 統110中射出的光線，然後在螢幕（未圖示）上成像。 光線的傳遞過程如下所述：所述單色光源陣列10發出的 第一單色光，被所述反射鏡陣列20反射後，進入所述聚 光透鏡組30，將第一單色光進行彙聚，接著進入所述分 光裝置40，部分第一單色光被反射到第一中繼透鏡71， 部分第一單色光被透射到所述凸透鏡50，所述凸透鏡50 將第，一單色光彙聚後，射在所述光轉換裝置60上’將第 一單色光轉換成第二單色光及第三單色光；接著所述第 二、第三單色光經過所述凸透鏡50後，被所述分光裝置 40反射到所述第一中繼透鏡71，所述第一中繼透鏡71將 所述第二、第三單色光轉換成平行光；所述反射鏡80將 第一、第二、第三單色光反射到所述第二中繼透鏡72中 表單編號 Α0101 ^ 9 I/* 16 ^ 0992005825-0 201128287 ’被第二中繼透鏡72彙聚到所述光導管90内，被混人成 亮度均勻的白光；從光導管90射出的白光經過高速旋轉 的色輪10 0後，被分成紅光、綠光及藍光；然後紅光、綠 光及藍光分別依時間順序進入所述TIR棱鏡系統11〇，然 後進入數位微鏡裝置120中，接著又被數位微鏡裴置12〇 中的處於開狀態的微鏡反射回TIR棱鏡系統11〇，最後光 束進入鏡頭130中，將圖像投影在螢幕（未圖示）上。 [0022] [0023] [0024] 可以理解，所述單色光源陣列也可以為紅色LEd， 所述光 轉換裝置能夠將紅光轉換成綠光及藍光，所述螢光粉的 化學成分為硫代鎵鹽（MGa2S4)。 所述單色光源陣列還可以為綠色LED，所述光轉換装置能 夠將綠光轉換成紅光及藍光，所述螢光粉的化學成分為 氟砷酸鎂及鹼土金屬鹵磷酸（Cai〇(p〇4)5C12)。 請參閱圖2，為本發明第二實施方式提供的一種投影機* ’其包括沿光路依次設置的單色光源陣列41〇、反射鏡陣 列420，聚光透鏡組430，分光裝置44〇，凸透鏡45〇，光 轉換裝置460，中繼透鏡組47〇，反射鏡48〇 ,光導管 ，色輪500，TIR棱鏡系統51〇、數位微鏡裝置52〇及鏡頭 530。所述投影機4與投影機丨的主要區別在於，所述單色 光源陣列410所發出的光為紫外光；所述光轉換裝置4 6 〇 用於將紫外光轉換成白光，其包括一個不透光的基板461 及塗敷在所述基板461上的螢光粉462，所述螢光粉462 的化學成分為RGB螢光粉；所述分光裝置44〇僅包括一個 分光鏡’狀將所述單色輕㈣㈣所發出的紫外光全 部進行透射，並將經過所述光轉換裝置46〇的白光全部反 099103090 表單編號A0101 第10頁/共16頁 0992005825-0 201128287 射到中繼透鏡組470，進而使白光進入所述光導管490。 [0025] 本發明的投影機，利用一個單色光源陣列與光轉換裝置 ，就能夠得到一個白色光源，並且配合相應的光路設計 ，使得在提高單色光源陣列的光利用率的同時，使投影 機更趨於小型化。同時由於所述鏡頭與光導管垂直設置 ，因此在所述鏡頭與光導管所形成的區域内能夠擺放盡 可能多的單色光源，可大大提高投影機所投射的圖像的 亮度，且不會額外的增大投影機的體積。 [0026] 另外，本領域技術人員可在本發明精神内做其他變化， 然，凡依據本發明精神實質所做的變化，都應包含在本 發明所要求保護的範圍之内。 【圖式簡單說明】 [0027] 圖1係本發明第一實施方式的投影機的示意圖； [0028] 圖2係本發明第二實施方式的投影機的示意圖。‘ 【主要元件符號說明】 ) [0029] 投影機 1、4 [0030] 單色光源陣列 10 、 410 [0031] 反射鏡陣列 20 、 420 [0032] 聚光透鏡組 30 、 430 [0033] 第一透鏡 31 [0034] 第二透鏡 32 [0035] 分光裝置 40 ' 440 099103090 表單編號A0101 第11頁/共16頁 0992005825-0 201128287 [0036] 第一分光鏡 41 [0037] 第二分光鏡 42 [0038] 凸透鏡 50 、 450 [0039] 光轉換裝置 60 、 460 [0040] 基板 61 、 461 [0041] 螢光粉 62 ' 462 [0042] 中繼透鏡組 70 ' 470 [0043] 第一中繼透鏡 71 [0044] 第二中繼透鏡 72 [0045] 反射鏡 80 、 480 [0046] 光導管 90 、 490 [0047] 色輪 100 、 500 [0048] TIR棱鏡系統 110 、 510 [0049] 數位微鏡裝置 120 、 520 [0050] 鏡頭 130 、 530 0992005825-0 099103090 表單編號A0101 第12頁/共16頁[0021] G 099103090 system 110 allows the beam entering its interior to be constantly reflected and refracted, thereby changing the direction of the beam. When the light beam emitted from the relay lens group enters the TIR prism system 110, the direction of the light beam is changed to the direction and angle required for the digital micromirror device 120 to operate. And when the beam emerging from the digital micromirror device 120 re-enters the TIR prism system 110, the direction of the beam is changed' to allow the beam to enter the lens 130. The digital micromirror device 120 is a micromirror reflection array. The micromirrors are controlled by image signals, and the micromirrors are independently flipped, respectively, in an on or off state to form an image source, wherein the micromirrors in the open state will be The light beam emitted from the TIR prism system 110 is reflected back to the ΤΙβ prism system 110', which is reflected into the lens I30 through the TIR prism system 11'. The lens 130 is located in the outgoing light path of the light passing through the digital micromirror device 120 and then passing through the TIR prism system 110, and is used to receive the light emitted from the TIR prism system V. 110, and then on the screen (not shown). ) Imaging. The light transmission process is as follows: the first monochromatic light emitted by the monochromatic light source array 10 is reflected by the mirror array 20, enters the collecting lens group 30, and the first monochromatic light is concentrated. And then entering the spectroscopic device 40, part of the first monochromatic light is reflected to the first relay lens 71, part of the first monochromatic light is transmitted to the convex lens 50, the convex lens 50 will be the first, a monochromatic light After the convergence, the first monochromatic light is converted into the second monochromatic light and the third monochromatic light by the light conversion device 60; then the second and third monochromatic lights pass through the convex lens 50. Reflected by the spectroscopic device 40 to the first relay lens 71, the first relay lens 71 converts the second and third monochromatic lights into parallel light; the mirror 80 will be first The second and third monochromatic lights are reflected into the second relay lens 72. Form number Α0101 ^ 9 I/* 16 ^ 0992005825-0 201128287 'Converged into the light pipe 90 by the second relay lens 72 , mixed with white light of uniform brightness; white light emitted from the light pipe 90 passes through a high-speed rotating color wheel After 10 0, it is divided into red light, green light and blue light; then red light, green light and blue light enter the TIR prism system 11 依 in chronological order, then enter the digital micromirror device 120, and then be digital micromirrors The micromirror in the open state is reflected back to the TIR prism system 11A, and finally the light beam enters the lens 130, and the image is projected on a screen (not shown). [0024] It can be understood that the monochromatic light source array can also be a red LEd, and the light conversion device can convert red light into green light and blue light, and the chemical composition of the fluorescent powder is sulfur. Generation gallium salt (MGa2S4). The monochromatic light source array may further be a green LED, and the light conversion device is capable of converting green light into red light and blue light, and the chemical composition of the fluorescent powder is magnesium fluoroarsenate and alkaline earth metal halophosphoric acid (Cai〇( P〇4) 5C12). 2 is a projector according to a second embodiment of the present invention, which includes a monochromatic light source array 41 依次, a mirror array 420, a condensing lens group 430, a light splitting device 44 〇, and a convex lens which are sequentially disposed along an optical path. 45 〇, light conversion device 460, relay lens group 47 〇, mirror 48 〇, light pipe, color wheel 500, TIR prism system 51 〇, digital micromirror device 52 〇 and lens 530. The main difference between the projector 4 and the projector 在于 is that the light emitted by the monochromatic light source array 410 is ultraviolet light; the light conversion device 46 〇 is used to convert ultraviolet light into white light, which includes one a light-transmissive substrate 461 and a phosphor powder 462 coated on the substrate 461, wherein the chemical composition of the phosphor powder 462 is RGB phosphor powder; and the spectroscopic device 44 includes only one spectroscope The ultraviolet light emitted by the single color light (four) (four) is all transmitted, and all the white light passing through the light conversion device 46 is inverted 099103090 Form No. A0101 Page 10 / Total 16 Page 0992005825-0 201128287 Shot to the relay lens group 470 In turn, white light enters the light pipe 490. [0025] The projector of the present invention can obtain a white light source by using a monochromatic light source array and a light conversion device, and cooperate with the corresponding optical path design, so as to improve the light utilization rate of the monochromatic light source array while making the projection The machine is more compact. At the same time, since the lens is disposed perpendicular to the light guide, it is possible to place as many monochromatic light sources as possible in the area formed by the lens and the light guide, which can greatly improve the brightness of the image projected by the projector, and It will additionally increase the size of the projector. In addition, those skilled in the art can make other changes within the spirit of the invention, and all changes that are made in accordance with the spirit of the invention are included in the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [0027] FIG. 1 is a schematic view of a projector according to a first embodiment of the present invention; [0028] FIG. 2 is a schematic view of a projector according to a second embodiment of the present invention. ' [Main Component Symbol Description] [0029] Projector 1, 4 [0030] Monochromatic Light Source Array 10, 410 [0031] Mirror Array 20, 420 [0032] Condenser Lens 30, 430 [0033] Lens 31 [0034] Second lens 32 [0035] Spectroscopic device 40 ' 440 099103090 Form number A0101 Page 11 / Total 16 pages 0992005825-0 201128287 [0036] First beam splitter 41 [0037] Second beam splitter 42 [0038] Convex lens 50, 450 [0039] Light converting device 60, 460 [0040] Substrate 61, 461 [0041] Fluorescent powder 62 ' 462 [0042] Relay lens group 70 ' 470 [0043] First relay lens 71 [ 0044] second relay lens 72 [0045] mirrors 80, 480 [0046] light pipes 90, 490 [0047] color wheel 100, 500 [0048] TIR prism system 110, 510 [0049] digital micromirror device 120, 520 [0050] Lens 130, 530 0992005825-0 099103090 Form No. A0101 Page 12 of 16