200811581 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種以雷射LED作為光源裝置的單 片式面板投影機及其光源裝置，尤指一種以雷射LED為 光源，利用一擴束元件使其雷射光束通過該擴束元件時能 將光束擴張一定程度範圍，並可運用於單片式面板投影機 内做為其光源裝置者。 【先前技術】 隨著科技時代的日新月異，各式各樣的資訊電子產品 以及設備因應而生，而各式的產品零組件均朝著輕薄短小 的目標邁進，如何使產品更具人性化，更攜帶方便符合人 因工程，符合消費者便利的需求，是目前市場主要的課題 之一。 我國過去十多年來光電產業之蓬勃發展，建立了相當 糸實的光學設計、模擬、製程、及光譜測試之經驗與技術， 因此往後發展微型化光學電子產品應該有很大的優勢。 『輕、薄、短、小、成本低』是近代電子產品發展的趨勢， 許多電子產品由於電子硬體，電腦、微處理機的大幅進 步’而以驚人的變革速度在更新它們的面貌，而微型化光 學電子產品將會具有非常大的發展潛力。例如，商業界頻 繁使用之簡報機器，配合行動技術不斷的提升，不僅手提 電腦越來越輕巧，如何將所搭配使用之光學投影簡報系統 相對縮小體積，更加強其色彩的飽和度與流明強度，且大 200811581 巾I改良畫S鮮献的問題’是相關業界—直想追求的目 一般來說，投影機係採用鎢鹵素燈、金屬鹵化物燈、 超紐汞燈或氣氣燈其中之-作為其光源。以上光源除了 各有優缺點外，確有共通的光源過熱、高耗電、低燈泡壽 命、、體積過大、重量重、與不易攜帶等缺點。因此，近年 來曾有人研究以相對較低耗電、發熱量較少、體積較小、 且壽命錄的傳祕光二極體（LED)㈣為投影機光 源。然而，由於受限於傳統LED的光學特性、以及其乃 是朝各個方向四處散射的發光方式，使得此類使用傳統 LED為光職置的f知投影機不僅在其影像的色彩飽和 度、鮮豔度與晝質銳利度上相對較差，且也因傳統led 四處散射的發光方式而造成其光利用效率的降低，進而導 致投影機的投影亮度也無法進一步提升。因此，在現今市 場㈣者對投影機的解析度及畫質需求日浙高的趨勢 下如何去付合消費者需求將投影機設計更輕薄短小，擁 有影像畫質更佳、色彩更鮮懿、更穩定且高亮度的光源輸 出，乃是目前業界重要的發展課題之一。 【發明内容】 本發明之目的，在於提供一種以雷射LED作為光源 裝置的投影機及其賴裝置，洲_擴束游來將雷射 LED所產生之小直徑雷射光束擴張成一定程度範圍，以 作為技〜機之光源裝置來使用。如此，便可因雷射led 200811581 所產生之小餘雷縣束可具有光束 f相位的光學舰，顿得郷機之該雷請D = 裝置可提供晝質更銳利、色彩更聰、與色彩飽和度更= 之功謎。 為達上述之目的，本發0聽提供-種以諸LED為 光源裝置的投影機，其包括有··至少—#射哪光源、 -合光裝置、至少-擴束元件、—導光元件、—棱鏡級、 -數位微鏡顯示裝置H投影鏡雌。射，該雷射 LED光源係可分職生紅、綠、藍三原色之不同顏色之 雷射光束’此二原色光束分別藉由該合光裝置將其紅、 綠、藍二原色之不同顏色之雷射光束集合於同一光軸成為 一合光光束，進而將該合光光束投射於該擴束元件上，並 以較佳之透射放大夾角為3〇度至6〇度之間可將該合光光 束投射面積擴大。同時，運用該導光元件將擴大後之合光 光束整合於限定範圍内，使該合光光束可呈一勻光且集中 的輸出至該稜鏡組，並投射至該數位微鏡顯示裝置上，且 將數位微鏡顯示裝置上之微鏡以數位方式來構成晝面，再 將其影像經由該投影鏡頭組予以投影至投影機外。 【實施方式】 為了能更清楚地描述本發明所提出之以雷射led作 為光源裝置的投影機，以下將配合圖示詳細說明之。 請參閱圖一所示，係為本發明以雷射LED作為光源 裝置的投影機之第一較佳實施例的光路徑示意圖。其中， 8 200811581 該投影機主要包括有：至少一雷射LED(Laser Light Emitting Diode)光源10、至少一擴束元件20、一合光裝置 (Cross Type Color Filter)30、一導光元件 40、一稜鏡組 50、 一數位微鏡顯不裝置 DMD (Digital Microminor Device)60 以及一投影鏡頭組70所組合而成。 於本實施例中，該雷射LED光源10係包括有三組分 別可產生紅、綠、藍（R、G、B)三原色不同光譜之雷射 LED(10a、10b、10c)所構成。由於雷射 LED(10a、10b、 l〇c)獨特的發光特性，使其所發出之光源不僅係為一平行 集中之小直徑光束，且更具有可調整光偏振相位（也就是 光偏振相位較為準確且較無雜光）的光學特性。 由此三原色雷射LED(10a、10b、10c)戶/f投射出之小 直"^平行光束’分別猎由其所對應之擴束元件20將其各 別之红、綠、藍（r、G、B)三原色光束擴大一定程度的 面積範圍’進而將其擴束後之各別紅、綠、藍（R、G、b) 二原色光束導入該合光裝置30之中。利用該合光裝置3〇 内部所設之兩垂直交錯之偏光鏡，分別將各別紅、綠、藍 (R、G、B)三原色光束集合成於同一光軸之合光光束， 技射於该導光元件40之内。同時，將合光光束整合於該 導光元件40所限定之範圍内折射，可使其合光光束可經 由該導光元件4G將其光斑齡，並呈—句絲態輸出， 進而彳又射至该稜鏡組5〇之上。並且，更藉由該稜鏡組 與該導光元件40相對應，將該導光元件4〇所折射出之勻 光投射入該數位微鏡顯示裝置上(Digital 9 200811581200811581 IX. Description of the Invention: [Technical Field] The present invention relates to a monolithic panel projector using a laser as a light source device and a light source device thereof, and more particularly to a laser light source as a light source The beam expanding component can expand the beam to a certain extent when the laser beam passes through the beam expanding component, and can be used as a light source device in a monolithic panel projector. [Prior Art] With the rapid development of the technology era, a variety of information electronic products and equipment have emerged, and all kinds of product components are moving toward a light, short, and short goal, how to make the product more humane, and more It is one of the main topics in the market. It is easy to carry and meet the needs of human factors engineering and meet the needs of consumers. China's optoelectronic industry has flourished over the past decade, and has established considerable experience and technology in optical design, simulation, process, and spectral testing. Therefore, the development of miniaturized optical electronic products should have great advantages. "Light, thin, short, small, low cost" is the trend of modern electronic products. Many electronic products are updating their appearance with amazing speed of change due to the great progress of electronic hardware, computers and microprocessors. Miniaturized optical electronics will have great potential for development. For example, the briefing machine frequently used by the business community, together with the continuous improvement of mobile technology, not only makes the portable computer more and more lightweight, how to reduce the volume of the optical projection presentation system used together, and enhance the saturation and lumen intensity of the color. And the big 200811581 towel I improved the painting S fresh problem 'is related to the industry - just want to pursue the general purpose, the projector is a tungsten halogen lamp, metal halide lamp, ultra-neo mercury lamp or gas lamp - As its light source. In addition to the advantages and disadvantages of the above light sources, there are common shortcomings such as overheating of the light source, high power consumption, low lamp life, excessive volume, heavy weight, and difficulty in carrying. Therefore, in recent years, it has been studied to use a relatively low power consumption, a small amount of heat, a small volume, and a life-recording secret light diode (LED) (four) as a projector light source. However, due to the limited optical characteristics of conventional LEDs and the way in which they are scattered around in all directions, such a conventional LED is used for the optical position of the projector, not only in the color saturation of its image, but also brightly. The degree of sharpness and the sharpness of the enamel are relatively poor, and the light utilization efficiency of the conventional led light scattering is reduced, which in turn causes the projection brightness of the projector to be further improved. Therefore, in today's market (4), how to meet the needs of consumers under the trend of projector resolution and image quality, the projector design is lighter and shorter, and the image quality is better and the color is more vivid. A more stable and high-intensity light source output is one of the most important development topics in the industry. SUMMARY OF THE INVENTION An object of the present invention is to provide a projector with a laser as a light source device and a device therefor, and expand the small-diameter laser beam generated by the laser LED to a certain extent. It is used as a light source device of the technology. In this way, the small Yulei County beam produced by the laser led 200811581 can have an optical ship with a beam f-phase, and the D= device can provide sharper, more vivid colors and colors. Saturation is more = the puzzle. For the purpose of the above, the present invention provides a projector with LEDs as a light source device, which includes at least one light source, a light combining device, at least a beam expanding component, and a light guiding component. , - Prism level, - Digital micro-mirror display device H projection mirror female. The laser light source is a laser beam of different colors which can be divided into three primary colors of red, green and blue. The two primary color beams respectively have different colors of red, green and blue primary colors by the light combining device. The laser beam is collected on the same optical axis to form a combined light beam, and the combined light beam is projected onto the beam expanding component, and the combined light is amplified by an angle of 3 to 6 degrees. The beam projection area is enlarged. At the same time, the light guiding component is used to integrate the enlarged combined light beam into a limited range, so that the combined light beam can be uniformly and outputted to the stack and projected onto the digital micromirror display device. And the micromirror on the digital micromirror display device is digitally configured to form a kneading surface, and then the image is projected to the outside of the projector through the projection lens group. [Embodiment] In order to more clearly describe the projector of the present invention which uses laser led as a light source device, the following will be described in detail with reference to the drawings. Referring to Fig. 1, there is shown a schematic diagram of a light path of a first preferred embodiment of a projector using a laser as a light source device. Among them, 8 200811581 The projector mainly comprises: at least one laser light emitting diode (Light Laser Emitting Diode) light source 10, at least one beam expanding component 20, a cross type color filter 30, a light guiding component 40, A group 50, a digital micro-mirror device DMD (Digital Microminor Device) 60 and a projection lens group 70 are combined. In the present embodiment, the laser LED light source 10 is composed of three types of laser LEDs (10a, 10b, 10c) which can generate different spectra of three primary colors of red, green and blue (R, G, B). Due to the unique luminescence characteristics of the laser LEDs (10a, 10b, l〇c), the light source emitted by the laser LEDs is not only a parallel concentrated small-diameter beam, but also has an adjustable light polarization phase (that is, the light polarization phase is relatively Optical properties that are accurate and less stray-free. Thus, the three primary color laser LEDs (10a, 10b, 10c) are small/straight "^parallel beams respectively projected by the household/f, respectively, by their corresponding beam expanding elements 20, respectively, their respective red, green, and blue (r , G, B) The three primary color beams are expanded to a certain extent of the area range, and then the respective red, green, and blue (R, G, b) two primary color beams after the expansion are introduced into the light combining device 30. By using two vertically-interlaced polarizers disposed inside the light combining device 3, respectively, the respective red, green, and blue (R, G, B) three primary color beams are combined into a combined light beam of the same optical axis, and the technique is Within the light guiding element 40. At the same time, the combined light beam is integrated into the range defined by the light guiding element 40, so that the combined light beam can be light-lengthed through the light guiding element 4G, and outputted in a sentence state, and then shot again. Up to 5〇 of the group. Moreover, the uniform light refracted by the light guiding element 4 投射 is projected onto the digital micromirror display device by the 稜鏡 group corresponding to the light guiding element 40 (Digital 9 200811581
Device)60之上。其中，該數位微鏡顯示裝置6〇係為一影 像產生元件，其位於稜鏡組50之後端，可令來自該稜鏡 組50的勻光在經由數位微鏡顯示裝置〇1^1)6〇晶片上之 多數微鏡(Micromirror Lens)以數位方式來構成影像畫 面。之後，再透過該稜鏡組50，把經由數位微鏡顯示裝 置60所產生之影像光折向至該投影鏡頭組7〇，進而由投 影鏡頭組70將影像投射出投影機的外界。 參考圖二A、二B所示，係分別為本發明擴束元件 將雷射LED光源之光束擴散放大之兩種較佳角度示意 圖。該雷射LED光源1〇之小直徑平行光束，在投射經該 擴束元件20a、20b後，可令其光束擴大一定程度的面積 範圍。於本發明中，該擴束元件2〇a、20b可以是以玻璃、 塑膠或壓克力等透明材質所構成之透鏡結構，且由該擴束 元件20a、20b將該光束所透射之出射角的放大夾角為介 於30度（例如圖二A所示）至60度（例如圖二B所示） 之間較佳。如此，即可滿足該數位微鏡顯示裝置DMD 60 所需求之光束接收面積以及相關之光學效能例如亮度等 等。 參考圖三A、三B、三C、三D所示，係為本發明之 擴束元件之若干變化實施例的具體結構圖。其中，如圖三 A所示，該擴束元件20c可以是以BK7型號之玻璃 (ND= 1 ·516800 ; VD=64· 17 )材質所構成的一凹透鏡結構， 其於光束的入射面21 (亦即圖三A之左側面）係為一半 輕為-1.4mm的内凹球面（半徑值為負值表示其圓心位在 200811581 球面的左側），而光束的出射面22(亦即圖三A之右侧面） 則為-直徑為2.8mm的平面，至於，擴束元件2〇c之厚 度t則為〇.6mm。於圖三B中，擴束元件2〇d同樣是玻璃 材質且係呈凸透鏡結構，其於光束的入射面21d係為一直 徑為2.8mm的凸球面（直徑值為正值表示其圓心位在球 面的右側）、出射面22d為2.8mm的平面、且厚度t係為 3.4mm。於圖三C中，擴束元件20e之入射面21e為一半 徑為-2 mm之内凹球面、出射面22e為一半徑為及〇5846 的凸球面、擴束元件2〇e之厚度t則為2〇mm。於圖三D 中，擴束元件20f之入射面21f為一半徑為15 mm之凸 球面、出射面22f為一半徑為1〇111111的凸球面、擴束元件 20f之厚度t則為20mm。 請參考圖四所示，係為本發明以雷射LED作為光源 裝置的投影機之第二較佳實施例之光路徑示意圖。有別於 第一較佳實施例令先行將紅、綠、藍（r、G、b)三原色 不同光譜之雷射LED光源(l〇a、i〇b、i〇c)投射入個別之 該擴光元件20内進行各別擴束。本創作第二較佳實施例 中，係令該三種紅、綠、藍（R、G、B)三原色不同光譜 之雷射LED光源(l〇a、i〇b、i〇c)先行直接投射於該合光 裝置(Cross Type Color Filter)30内。接著，利用該合光裝 置30將個別紅、綠、藍（R、G、B)三原色光束集合成 於同一光軸之合光光束，同時進一步投射於該擴束元件 20上，使其合光光束擴大一定程度的面積範園，進而投 射於後方之該導光元件40内。其中，該導光元件4〇可以 200811581 是一集光導管(Light Pipe)41，並與該擴束元件2〇相互連 結成一體，其可將擴束後之合光光束整合於該集光導管 41所限疋範圍内折射並將光斑消除，進而呈現一勻光狀 態投射至相對應之該稜鏡組50上。再藉由該稜鏡組5〇 將該導光元件40所折射出之勻光投射於該數位微鏡顯示 裝置60來構成影像畫面後，再由稜鏡組5〇將該影像光折 向該投影鏡頭組70並投射出投影機外。 請參考圖五所示，係為本發明以雷射LED作為光源 裝置的投影機之第三較佳實施例之光路徑示意圖。由於圖 五所示之第三較佳實施例大體上係與圖四所示之第二較 佳實施例類似，故相同的元件與結構以下將不再贅述。 於圖五所示之第三較佳實施例的不同點在於，該導光 元件40更包括有一集光鏡片42以及一微鏡陣列 MLA(MiCK)mim)rLensAiTay)43所組合而成。該集光鏡片 42係為一折射係數與擴束元件2〇相對應（例如相反）的 透鏡，且其位置係與該擴束元件2〇成一直線對應，可將 擴束後之光束加以集光並轉換成一擴大且平行光束，之後 再投射於該微鏡陣列43上。並運用該微鏡陣列43上所設 之複數個微透鏡可將其擴大且平行光束消除光斑並呈一 勻光投射至該稜鏡組50上。 綜上所述，本發明所提出之以雷射LED作為光源裝 置的投影機，其藉由雷射LED光源1〇與擴束元件2〇的 搭配使用，使得本發明可充分利用雷射LED(l〇a、l〇b、 10c)之獨特發光特性，亦即，所發出之光源係為一平行集 12 200811581 中之小直握光束、且具有可調整光偏振相位（也就是光偏 振，位較鱗確且較絲光）的光學躲。因此，本發明 所2之以雷射LED作為絲裝置的投影機不僅可達到 色彩=像更加鮮明飽和、影像銳利度更高、亮度較傳統 LED光源更亮、且更能提升投影機之光效能利用之目的。 以上所述係利用較佳實施例詳細說明本發明，而非限 制本發Θ之||g。大凡熟知此類技藝人士皆能明瞭，適當 而作些微的改變及調整，仍將不失本發明之要義所在，亦 不脫離本發明之精神和範圍。 【圖式簡單說明】 圖係為本發明以雷射LED作為光源裝置的投影機 之第一較佳實施例的光路徑示意圖。 ^圖二A、二B係分別為本發明擴束元件將雷射led 光源之光束擴散放大之兩種較佳角度示意圖。 圖一八〜二D係為本發明之擴束元件之若干變化實施 例的具體結構圖。 圖四係為本發明以雷射LED作為絲裝置的投影機 之第二較佳實施例之光路徑示意圖。 圖五係為本發日似魏LED作為統裝置的投影機 之第三較佳實施例之光路徑示意圖。 200811581 【主要元件符號說明】 10〜雷射LED光源 10b〜綠雷射LED 20〜20f〜擴束元件 22c〜22f〜出射面 40〜導光元件 42〜集光鏡片 50〜稜鏡組 70〜投影鏡頭組Device) above 60. Wherein, the digital micromirror display device 6 is an image generating component located at the rear end of the stack 50, so that the uniform light from the stack 50 can be passed through the digital micromirror display device 〇1^1)6 Most of the micromirrors (Micromirror Lens) on the germanium wafer form the image in a digital manner. Thereafter, the image light generated by the digital micromirror display device 60 is deflected to the projection lens group 7 through the stack 50, and the image is projected from the projection lens group 70 to the outside of the projector. Referring to Figures 2A and 2B, there are two preferred angle diagrams for diffusing and amplifying a beam of a laser LED source, respectively, for the beam expanding component of the present invention. The small-diameter parallel beam of the laser LED light source, after being projected through the beam expanding elements 20a, 20b, can expand the beam to a certain extent. In the present invention, the beam expanding elements 2a, 20b may be a lens structure composed of a transparent material such as glass, plastic or acryl, and the exit angle of the beam transmitted by the beam expanding elements 20a, 20b. The magnification angle is preferably between 30 degrees (e.g., as shown in Figure 2A) to 60 degrees (e.g., as shown in Figure 2B). Thus, the beam receiving area required for the digital micromirror display device DMD 60 and related optical performance such as brightness and the like can be satisfied. Referring to Figures 3A, 3B, 3C, and 3D, there are shown specific structural diagrams of several variations of the beam expanding element of the present invention. As shown in FIG. 3A, the beam expander element 20c may be a concave lens structure made of BK7 type glass (ND=1 · 516800; VD=64·17), which is on the incident surface 21 of the light beam ( That is, the left side of Figure 3A is a concave spherical surface with a light weight of -1.4 mm (the negative value indicates that the center of the circle is on the left side of the 200811581 spherical surface), and the exit surface 22 of the light beam (ie, Figure 3A). The right side surface is a plane having a diameter of 2.8 mm, and the thickness t of the beam expanding element 2〇c is 〇.6 mm. In Fig. 3B, the beam expander element 2〇d is also made of glass and has a convex lens structure, and the incident surface 21d of the light beam is a convex spherical surface having a diameter of 2.8 mm (the diameter value is positive value indicating that the center of the circle is at The right side of the spherical surface), the exit surface 22d is a plane of 2.8 mm, and the thickness t is 3.4 mm. In Fig. 3C, the incident surface 21e of the beam expanding element 20e is a concave spherical surface having a radius of -2 mm, the emitting surface 22e is a convex spherical surface having a radius of 〇5846, and the thickness t of the expanding beam element 2〇e is It is 2〇mm. In Fig. 3D, the incident surface 21f of the beam expanding element 20f is a convex spherical surface having a radius of 15 mm, the emitting surface 22f is a convex spherical surface having a radius of 1〇111111, and the thickness t of the expanding beam element 20f is 20 mm. Referring to FIG. 4, it is a schematic diagram of a light path of a second preferred embodiment of the projector using the laser as a light source device. Different from the first preferred embodiment, the laser light sources (l〇a, i〇b, i〇c) of different spectra of red, green, and blue (r, G, b) are directly projected into the individual. Each of the light-emitting elements 20 is separately expanded. In the second preferred embodiment of the present invention, the laser light sources (l〇a, i〇b, i〇c) of the three different primary colors of red, green, and blue (R, G, B) are directly projected first. In the cross type color filter 30. Then, the light combining device 30 combines the individual red, green, and blue (R, G, B) three primary color light beams into a combined light beam of the same optical axis, and further projects on the beam expanding element 20 to combine the light. The beam expands to a certain extent of the area and is projected into the light guiding element 40 at the rear. The light guiding element 4 2008 200811581 is a light pipe 41 and integrated with the beam expanding element 2 ,, which can integrate the expanded combined light beam into the collecting light pipe. The refracting within the range of 41 limits and eliminating the spot, thereby projecting a uniform light state onto the corresponding group 50. Then, the uniform light refracted by the light guiding element 40 is projected onto the digital micromirror display device 60 to form an image frame, and then the image light is folded by the cymbal group 5〇. The lens group 70 is projected and projected out of the projector. Referring to FIG. 5, it is a schematic diagram of a light path of a third preferred embodiment of a projector using a laser as a light source device. Since the third preferred embodiment shown in FIG. 5 is substantially similar to the second preferred embodiment shown in FIG. 4, the same components and structures will not be described below. The third preferred embodiment shown in FIG. 5 is different in that the light guiding element 40 further comprises a collecting lens 42 and a micro mirror array MLA(MiCK)mim)rLensAiTay)43. The collecting lens 42 is a lens having a refractive index corresponding to (for example, opposite to) the beam expanding element 2, and its position is in line with the beam expanding element 2, and the beam after beam expansion can be collected. And converted into an enlarged and parallel beam, and then projected onto the micromirror array 43. The plurality of microlenses provided on the micromirror array 43 can be used to expand and parallel the beam to eliminate the spot and project a uniform light onto the stack 50. In summary, the projector with the laser LED as the light source device proposed by the present invention is used by the laser LED light source 1〇 and the beam expanding component 2〇, so that the present invention can fully utilize the laser LED ( The unique luminescence properties of l〇a, l〇b, 10c), that is, the source of light emitted is a small straight beam of parallel set 12 200811581, and has an adjustable polarization phase of light (ie, polarization of light, bit Optical hiding of the scales and more mercerized. Therefore, the projector with the laser LED as the wire device of the invention can not only achieve the color=image more vivid saturation, the image sharpness is higher, the brightness is brighter than the traditional LED light source, and the light efficiency of the projector can be improved. Use purpose. The above description of the present invention is described in detail by the preferred embodiments, and is not limited to the ||g of the present invention. It will be apparent to those skilled in the art that such modifications and adaptations may be made without departing from the spirit and scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The figure is a schematic diagram of a light path of a first preferred embodiment of a projector using a laser as a light source device. FIG. 2A and FIG. 2B are respectively two schematic perspective views of the beam expanding and amplifying the laser beam of the laser beam source according to the present invention. Figures 18 to 2D are specific structural diagrams of several modified embodiments of the beam expanding component of the present invention. Fig. 4 is a schematic view showing the light path of the second preferred embodiment of the projector using the laser as the wire device of the present invention. Fig. 5 is a schematic diagram showing the optical path of the third preferred embodiment of the projector which is a Wei-LED as a unified device. 200811581 [Description of main component symbols] 10~Laser LED light source 10b~Green laser LED 20~20f~Expanding element 22c~22f~Exit surface 40~ Light guiding element 42~ Collecting lens 50~稜鏡70~Projection Lens group
10a〜紅雷射LED 10c〜藍雷射LED 21 c〜21 f〜入射面 30〜合光裝置 41〜集光導管 43〜微鏡陣列 60〜數位微鏡顯示裝置10a~red laser LED 10c~blue laser LED 21 c~21 f~incident surface 30~lighting device 41~light collecting tube 43~micro mirror array 60~digit micromirror display device