I3075J2fttwf.d〇c/006 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種投影顯示裝置及照明系統，且特 別是有關於一種可以避免破壞光學元件並延長光源壽命的 照明系統，以及使用此照明系統的投影顯示裝置。 【先前技術】 一般而言’投影顯示裝置(projection apparatus)必須要 有足夠的光源以提供顯示器較高之總流明（luminance)數， 才能夠得到較高亮度的投影影像。因此，投影顯示裝置中 的照明系統使用的光源大多是_素燈或是各式的高壓汞 燈。這些光源雖然具有高亮度的優點，但也伴隨著高耗電、 壽命低以及產生高熱等缺點。尤其是光源所產生的高熱， 若無法適度地傳導出投影顯示裝置之外，常會造成光源本 身使用壽命的縮減，以及對投影顯示裝置中的元件造成 害。 一—更具體地來說，投影顯示裝置主要是由照明系統、顯 不凡件以及祕系統所組成。在照㈣統巾，光源所提供 的，束包含了用㈣賴像的可見光，以及紅外光與紫外 =不可見光。若紅外光與紫外光等具有破壞性的光進入 士予7C件中，光學元件經f會因為吸收過量的紅外光鱼紫 而受顺壞。為了避免上述的情形發生，習知技術便 =^源㈣方設置—濾以，以將紅外光與紫外光反射 回光源，避免光學元件受到破壞。 但是，反射回光源的紅外光以及紫外光的能量反而會 'twf.doc/006 在本發明一較佳實施例中，光學鏡片與光束傳遞路徑 之間所夾的角度介於3Q度〜6Q度，而其較佳角度例如是 45度。 在本發明一較佳實施例中，光源包括汞燈、發光二極 體、金屬鹵化物燈、鹵素燈或高強度放電燈(high intensity discharge lamp, HID lamp)。 在本發明一較佳實施例中，投影顯示裝置更包括一散 熱裝置，配置在紫外光以及紅外光穿透光學鏡片之後的傳 遞路徑上。 在本發明一較佳實施例中，投影顯示裝置更包括多個 配置於光學鏡片與顯示元件之間的光學元件，且光學元件 例如是分色盤(Color Wheel)、光積分柱(Light Integration Rod)、光學透鏡(Optical Lens)、偏振轉換元件或是這些元 件的組合。 在本發明一較佳實施例中，顯示元件包括單晶石夕液晶 順示面板、高溫多晶石夕液晶(High-Temperature Polysilicon) 顯示面板或數位微鏡片元件(Digital Micro-Mirroi· Device)。 在本發明一較佳實施例中，上述之至少一顯示元件為 單一顯示元件’因此投影顯示裝置為單片式投影顯示裝置。 在本發明一較佳實施例中，上述之至少一顯示元件包 括三個顯示元件，因此投影顯示裝置為三片式投影顯示裝 置。 ' 本發明因採用可以反射可見光並且使紫外光以及紅 外光穿透的光學鏡片，因此可以具有破壞性的紫外光以及 ^07¾ twf.doc/006 紅外光不會傳遞至投影顯示裝置中的光學元件以及光源 處，因而可延長光源及光學元件的使用壽命。 為讓本發明之上述和其他目的、特徵和優點能更明高貝 易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說 明如下。 【實施方式】 圖1繪示為依照本發明一較佳實施例之一種單片式投 影顯示裝置的示意圖。請參考圖1，投影顯示裝置1〇〇包 括一照明系統110、一顯示元件120以及一成像系統130。 其中’照明系統110包括光源112以及光學鏡片114。光 源112適於提供光束112a，而光束112a依其能見度可再 細分為可見光114a以及不可見光的紫外光(UV)與紅外光 (IR)。用以提供光束l!2a的光源例如是汞燈、發光二 極體、金屬鹵化物燈、鹵素燈或高強度放電燈。 光學鏡片114配置於光束112a的傳遞路徑P1上，且 光學鏡片Π4與光束112a的傳遞路徑P1夾有一角度α。 值付注思的是’光學鏡片114會反射可見光ii4a，但是紫 外光(UV)以及紅外光(ir)則會穿透光學鏡片114。 此外’顯示元件120配置於可見光n4a的傳遞路徑 P2上，且顯示元件120適於將可見光114a形成一影像光 束122。減示元件120例如是單晶石夕液晶顯示面板、高溫 多晶矽液晶顯示面板或數位微鏡片元件。另外，成像系統 130配置於影像光束122之傳遞路徑P3上，用以將影像光 束122投射至螢幕(未繪示)上以顯示出影像。在本 實施例 13 078llAtwf.doc/0〇6 中，成像系統130例如包括投影鏡頭。 值得注意的是，本實施例之光學鏡片114與光束U2a 的傳遞路徑P1之間所夾的角度α例如是介於30度〜60 度，而較佳的角度α例如是45度。此外，光學鏡片114 所反射的可見光114a的波長介於420〜700 nm，而穿透光 學鏡片114的紫外光(UV)的波長小於410 nm，且穿透光學 鏡片114的紅外光(IR)的波長是介於750〜1000 nm。 上述之光學鏡片114可經由市面上許多光學元件生產 公司購得。例如，Thin Film Imaging Technologies 公司（美 國）所生產的冷鏡(45 °Cold Mirror)，其可以讓波長介於800 〜1200 nm的紅外光IR穿透，且使波長介於425〜65〇 nm 的可見光114a反射。而在冷鏡上還塗佈有—層可讓紫外光 穿透的塗制。另外，在其料光學元件生產公司，例如 是，ROCODES Ele伽 0pties e。· ω (台灣）等等鱗 得類似之鏡片產品。 當然’上述之光學鏡片114也可 反射與穿透波長翻，__方切制，、、、貝&所要求之 鏡片114。 增族方式鑛製實際所需的光學 請繼續參考圖丨’為了讓投影顯示 來的影像更為清晰且顏色更為均勻 所技射出 可以在光學鏡片m與顯示元又示裝置= 140。在本實施例中，光 之間配置光學元件 :144、光學透鏡146以及偏振:=Γ #光 其中，分色盤142是用以滤出均勻且高穿：= I307^Qtwfdoc/006 積刀柱144疋用以將濾出的色光更均勻化，偏振轉換元件 148用以將色㉞料提高並準確的投射至光學透鏡146 上，再由光學透鏡146將可見光114a投射入顯示元 中。 丁 另外’在紫外光(UV)以及紅外光(IR)穿透光學鏡片 114後的傳遞路徑P4上更可以配置一散熱裝置15〇，以促 進紫外光(UV)以及紅外光(iR)所產生的熱能快逮的散出投 影择員示裝置100之外。在本實施例中，此散熱裝置15〇例 如是風扇或是其他已知適用的散熱裝置。 圖2繪示為依照本發明另一較佳實施例之—種三片式 投影顯示裝置的示意圖。投影裝置200包括一照明系統 no’三個顯示元件120a、120b、120c以及一成像系統13〇。 在本實施例中，投影裝置200更包括光學元件240以及色 彩管理裝置214。本實施例之照明系統11〇與圖1之照明 系統110相同。因此，由光源112所產生之紫外光(uv)以 及紅外光(IR)會傳送至散熱裝置150,而光源112所投射出 之可見光會經光學元件240而進入色彩管理裝置214。光 學元件240例如包括了透鏡陣列202、偏振轉換元件204 以及透鏡206。之後，可見光在進入色彩管理裝置214之 後，經由色彩管理裝置214内的反射與穿透機制可以使得 可見光分成三道光線而分別進入顯示元件120a、120b、 12〇c中，之後由顯示元件120a、120b、120c反射出的光 線會一致射向成像系統130。之後成像系統130會將光線 處理成影像，並將影像投射至螢幕(未繪示）。值得注意的 10 13078l}fttwf.doc/006 是，本實施例圖2崎示之三片式投影顯示裝置僅是 -實例’而並非用以限定本發明。本發明之照明系統j 亦可以應用在其他卿式m投影鮮裝置中。 在本!X明之#又影頒示裝置及照、明系、統中，因戶斤使用 光车鏡片可使可見光反射並且使f外光以及紅外光穿透，、 因此光學鏡>1可使可見光反射至光學元件、顯示元件及 ^系統巾崎行·的投射，⑽對絲元件造成傷4 紫外光以及紅外光則穿透光學鏡片而傳遞至外界環境 是散熱裝置）巾。因此，投影顯示裝置中的光學元件不= 受到紫外光以及紅外光_射，因而可啸高其使用壽^ 另外，因紫外光以及紅外光會穿透光學鏡片而傳γ°ρ° 外界環境（或是散熱裝置），而不會傳遞至照明系 源上，因此照明系統的光源不會受到紫外光以及紅外“ 照射，因而可以提高其使用壽命。 的 雖然本發明已以較佳實施例揭露如上，然其並非 限定本發明，任何熟習此技藝者，在不脫離本發明 以 ^範圍内’當可作些許之更動與潤飾，因此本發明之= 範圍當視後附之申請專利範圍所界定者為準。 呆遵 【圖式簡單說明】 圖1繪示為本發明之一種單片式投影顯示罗 圖。 衣直的示意 圖2繪示為本發明另一種三片式投影顯 圖。 、丁在置的示意 【主要元件符號說明】 13 078llAtwf.doc/006 100、200:投影裝置 110 :照明系統 112 :光源 112a :光束 114 :光學鏡片 114a :可見光 120、120a、120b、120c :顯示元件 122 :影像光束 130 :成像系統 140、240 :光學元件 142 :分色盤 144 :光積分柱 146 :光學透鏡 148、204 :偏振轉換元件 150 :散熱裝置 202 :透鏡陣列 206 :透鏡 214 :色彩管理裝置 UV :紫外光 IR :紅外光 P卜P2、P3、P4 :傳遞路徑 α :角度 12I3075J2fttwf.d〇c/006 IX. Description of the Invention: [Technical Field] The present invention relates to a projection display device and an illumination system, and more particularly to an illumination system capable of avoiding damage to an optical component and extending the life of the light source And a projection display device using the illumination system. [Prior Art] In general, a projection apparatus must have sufficient light sources to provide a higher total lumens of the display to obtain a projected image of higher brightness. Therefore, the light source used in the illumination system in the projection display device is mostly a s-light or a variety of high-pressure mercury lamps. Although these light sources have the advantage of high brightness, they are accompanied by disadvantages such as high power consumption, low lifetime, and high heat generation. In particular, the high heat generated by the light source, if not properly conducted out of the projection display device, often causes a reduction in the life of the light source itself and damage to components in the projection display device. One—more specifically, the projection display device is mainly composed of a lighting system, a display device, and a secret system. In the photo (4), the light source provides a bundle containing visible light (4), and infrared light and ultraviolet light = invisible light. If the destructive light such as infrared light and ultraviolet light enters the 7C piece, the optical element will be obstructed by the absorption of excessive infrared light fish purple. In order to avoid the above situation, the conventional technique is to set the filter to reflect the infrared light and the ultraviolet light back to the light source to prevent the optical component from being damaged. However, the infrared light reflected back to the light source and the energy of the ultraviolet light may instead be 'twf.doc/006. In a preferred embodiment of the invention, the angle between the optical lens and the beam transmission path is between 3Q and 6Q degrees. And its preferred angle is, for example, 45 degrees. In a preferred embodiment of the invention, the light source comprises a mercury lamp, a light emitting diode, a metal halide lamp, a halogen lamp or a high intensity discharge lamp (HID lamp). In a preferred embodiment of the invention, the projection display device further includes a heat sink disposed on the transmission path after the ultraviolet light and the infrared light penetrate the optical lens. In a preferred embodiment of the present invention, the projection display device further includes a plurality of optical elements disposed between the optical lens and the display element, and the optical elements are, for example, a color wheel and a light integration rod. ), optical lens (Optical Lens), polarization conversion element or a combination of these elements. In a preferred embodiment of the invention, the display element comprises a single crystal silicon liquid crystal display panel, a high-temperature polysilicon display panel or a digital micro-mirror device. In a preferred embodiment of the invention, at least one of the display elements is a single display element. The projection display device is a monolithic projection display device. In a preferred embodiment of the invention, at least one of the display elements comprises three display elements, and thus the projection display device is a three-piece projection display device. The present invention employs an optical lens that can reflect visible light and penetrate ultraviolet light and infrared light, and thus can have destructive ultraviolet light and optical elements that are not transmitted to the projection display device. And the light source, thus extending the life of the light source and optical components. The above and other objects, features, and advantages of the present invention will become more apparent from the description of the appended claims. [Embodiment] FIG. 1 is a schematic diagram of a monolithic projection display device in accordance with a preferred embodiment of the present invention. Referring to FIG. 1, the projection display device 1 includes an illumination system 110, a display component 120, and an imaging system 130. Wherein the illumination system 110 includes a light source 112 and an optical lens 114. Light source 112 is adapted to provide beam 112a, and beam 112a can be subdivided into visible light 114a and invisible ultraviolet (UV) and infrared (IR) light depending on its visibility. The light source for providing the light beam l! 2a is, for example, a mercury lamp, a light emitting diode, a metal halide lamp, a halogen lamp or a high intensity discharge lamp. The optical lens 114 is disposed on the transmission path P1 of the light beam 112a, and the optical lens Π4 has an angle α with the transmission path P1 of the light beam 112a. It is worthwhile to say that the 'optical lens 114 reflects the visible light ii4a, but the ultraviolet light (UV) and the infrared light (ir) penetrate the optical lens 114. Further, the display element 120 is disposed on the transmission path P2 of the visible light n4a, and the display element 120 is adapted to form the visible light 114a into an image light beam 122. The decrementing element 120 is, for example, a single crystal silicon liquid crystal display panel, a high temperature polycrystalline liquid crystal display panel, or a digital microlens element. In addition, the imaging system 130 is disposed on the transmission path P3 of the image beam 122 for projecting the image beam 122 onto a screen (not shown) to display an image. In the present embodiment 13 078 ll Atwf. doc / 0 〇 6, the imaging system 130 includes, for example, a projection lens. It is to be noted that the angle α between the optical lens 114 of the present embodiment and the transmission path P1 of the light beam U2a is, for example, between 30 degrees and 60 degrees, and the preferred angle α is, for example, 45 degrees. In addition, the visible light 114a reflected by the optical lens 114 has a wavelength of 420 to 700 nm, and the ultraviolet light (UV) that penetrates the optical lens 114 has a wavelength of less than 410 nm, and penetrates the infrared light (IR) of the optical lens 114. The wavelength is between 750 and 1000 nm. The optical lens 114 described above is commercially available from a number of optical component manufacturing companies on the market. For example, a cold mirror (45 °Cold Mirror) produced by Thin Film Imaging Technologies (USA) can penetrate infrared light with a wavelength between 800 and 1200 nm and make the wavelength between 425 and 65 〇nm. The visible light 114a is reflected. The cold mirror is also coated with a layer that allows UV light to pass through. In addition, in its production company of optical components, for example, ROCODES Ele gamma 0pties e. · ω (Taiwan) and other similar lens products. Of course, the optical lens 114 described above can also reflect and penetrate the lens 114 required by the wavelength doubling, __ square cut, , , , and . The opticals required by the Zengzu mine system should continue to refer to the figure 丨' In order to make the image displayed by the projection clearer and the color more uniform. The technique can be displayed on the optical lens m and the display element = 140. In this embodiment, the optical elements are disposed between the light: 144, the optical lens 146, and the polarization: = Γ #光中, the color separation disk 142 is used to filter out uniform and high wear: = I307^Qtwfdoc/006 144A is used to more uniformize the filtered color light, and the polarization conversion element 148 is used to enhance and accurately project the color material onto the optical lens 146, and then the visible light 114a is projected into the display element by the optical lens 146. In addition, a heat sink 15 更 can be disposed on the transmission path P4 after the ultraviolet (UV) and infrared (IR) light penetrates the optical lens 114 to promote ultraviolet (UV) and infrared (iR) generation. The thermal energy is quickly captured outside the projection selection device 100. In the present embodiment, the heat sink 15 is, for example, a fan or other known heat sink. 2 is a schematic diagram of a three-piece projection display device in accordance with another embodiment of the present invention. Projection device 200 includes an illumination system no' three display elements 120a, 120b, 120c and an imaging system 13A. In the present embodiment, the projection device 200 further includes an optical component 240 and a color management device 214. The illumination system 11A of the present embodiment is the same as the illumination system 110 of FIG. Therefore, the ultraviolet (uv) and infrared (IR) light generated by the light source 112 are transmitted to the heat sink 150, and the visible light projected by the light source 112 enters the color management device 214 via the optical element 240. Optical element 240 includes, for example, lens array 202, polarization conversion element 204, and lens 206. Thereafter, after entering the color management device 214, the visible light can be divided into three rays by the reflection and penetration mechanism in the color management device 214 to enter the display elements 120a, 120b, and 12c, respectively, and then by the display element 120a, The light reflected by 120b, 120c will be uniformly directed toward imaging system 130. Imaging system 130 then processes the light into an image and projects the image onto a screen (not shown). Note that 10 13078l}fttwf.doc/006 is that the three-piece projection display device of the present embodiment shown in Fig. 2 is merely an example and is not intended to limit the present invention. The illumination system j of the present invention can also be applied to other clear type m projection devices. In this! X Mingzhi #影影示装置和照,明系,统中, because the household use of the light car lens can reflect visible light and make f external light and infrared light penetrate, so the optical mirror > The visible light is reflected to the projection of the optical element, the display element, and the system, and (10) the wire element is injured. 4 The ultraviolet light and the infrared light pass through the optical lens and are transmitted to the external environment as a heat sink. Therefore, the optical element in the projection display device is not subject to ultraviolet light and infrared light, so that it can be used for high life. In addition, ultraviolet light and infrared light can penetrate the optical lens and transmit γ°ρ° external environment ( Or the heat sink) is not transmitted to the illumination source, so the light source of the illumination system is not "irradiated by ultraviolet light and infrared light, so that its service life can be improved. Although the present invention has been disclosed in the preferred embodiment as above However, it is not intended to limit the invention, and those skilled in the art can make some modifications and refinements without departing from the scope of the invention, and thus the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS [Fig. 1] A single-piece projection display diagram of the present invention is shown. Figure 2 of the clothing is shown as another three-piece projection display of the present invention. Explanation of the main components [Key element symbol description] 13 07811Atwf.doc/006 100, 200: Projection device 110: illumination system 112: light source 112a: light beam 114: optical lens 114a: visible light 120, 120a, 12 0b, 120c: display element 122: image beam 130: imaging system 140, 240: optical element 142: color separation disk 144: light integration column 146: optical lens 148, 204: polarization conversion element 150: heat sink 202: lens array 206 : Lens 214: Color management device UV: Ultraviolet IR: Infrared light P, P2, P3, P4: Transfer path α: Angle 12