1251112 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種擺動裝置，特別關於一種利用於投 影鏡頭組之擺動裝置。 【先前技術】 由於大顯示面積、小型化以及輕量化系統的多重需求 下’影像投影系統成為目前光電產業中最熱門的分項之 -^ 〇 現今依據投影的原理主要可將投影系統分為三大類 型，分別為液晶投影系統(Liquid Crystal Display，LCD)、 單晶矽液晶投影系統(Liquid Crystal on Silicon，LCOS)及 數位光源處理器投影糸統(Digital Light Processing， DLP)，其中，DLP由於具有高亮度、正確的色調重現性、 快速的反應時間、無雜訊及輕薄短小等優點，因而成為目 前新一代熱門的投影系統之一。 如圖1所示，在DLP式投影系統1中，係採用數位控 制’並利用反射光原理，將來自光源η之光集聚之後經 由透鏡12聚焦，再穿過紅綠藍三色的彩色濾光片13後， 才又射至數位微鏡晶片（Digital Micro-mirror Device，DMD ) 上。由於數位微鏡晶片14上具有許多微小的可動鏡片， 經由驅動電極控制可動鏡片傾斜角度以及偏轉時 間’再藉由切換光的反射方向由背投鏡頭組15投射 至螢幕16成像。 1251112 為了產生晝面之色彩層次感，數位微鏡晶片14 上之可動鏡片係以微動方式產生光通量之差異以達 到此目的，然而鏡片的變化有限，因此使此一差異變 化仍不足夠。 為了解決上述之問題，如圖2所示，有業者在2004 年公佈其成功地研發了一擺動裝置20，其係連結於DLP 式投影系統1中之背投鏡頭組15，利用擺動裝置20再加 以控制光通量之差異，以使晝面更具有色彩層次感，以結 構上簡單地來說，如圖3所示，該擺動裝置20係包含一 遮板21、一上磁鐵22及一下磁鐵23，遮板21係具有一 遮光部211及一基部212，遮光部211與基部212之間具 有一支點213，支點213係固定於背投鏡頭組15上，遮板 21之基部212配置組繞一平板狀線圈24，上磁鐵22與下 磁鐵23則係分別設置於遮板21之基部212的相對兩侧 面，當通以平板狀線圈24電流時，會產生一垂直遮板21 方向之磁場，此時藉由與上磁鐵22及下磁鐵23的磁場相 互作用下，使遮板21能在水平方向上擺動，此擺動裝置 20之設置將使得投影系統之晝面對比度提高至5000 : 1， 有效地優化了晝面的品質。 承上所述，習知之擺動裝置20由於需於遮板21上纏 繞線圈24，受限於基部212之平面結構，造成線圈24組 繞不易，容易影響產品之良率，又，此裝置之擺動結構較 不穩定，且需設置兩大磁鐵22、23因而提高了產品之成 本，有鑑於此，如何提供一種組裝容易、作動穩定且成本 1251112 j之擺崎置，以應用於投影系統之光學鏡頭組中，實 為S今投影系統的重要課題之一。 【發明内容】 易=鐘於上述課題，本發明之目的為提供一種組裝容 緣=且成本低廉之投影鏡頭組及其擺動裝置。 遮板、-遠故達上34目的’依據本發明之擺動裝置包含— 遮板係具有—彈性元件以及—線圈迴路。其中， 於遮板°卩及—連動部；連接元件之—端係連接 之間係具有連接70件與連動部之連減及遮光部 杜'、：點’擺動支點係連結於光學組件；彈 性讀之:絲與連接元件之另—端相連接，且彈性元: 光學组件;線圈迴路係套合彈性元件與 二：：路係具有一線圈與-開關迴路，當開 關迴路控制通_電_，連接元件絲轉動，俾使 遮板擺動。 又，=上依據本發明之投影鏡_包含_ 鏡頭、-鏡身.^及—擺動裝置。其中 於鏡頭之4 ’支架係連接於鏡身 一遮板、一速接元件、1性元件及:=炊其係包含 具有一遮光郄及—連動部，連接元件L，遮板係 之連動部，真連接元件=連接於遮板 端係與連接顺1相連接，且彈二 1251112 =:2:,路係套合彈性元件與連接元件，且線 連接元件係來回移動，俾使遮二 利用1接元件連接遮二 因此當線圈:口 Ϊ 元件之材質可為金屬， 她才、質=:=開關迴路控制通以電流時，會對 =路切斷線圈電流時，彈性元件會對連接元二V 力’由連接遮板之連接元件來回移 =:ΓΓΓ裝置係利用簡單之機械結二 =’ 產品之良知組装ΐ加容易，因而可提高 更加穩定。 χ於此顧結構使得擺動動作BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swinging device, and more particularly to a swinging device for use in a projection lens group. [Prior Art] Due to the large display area, miniaturization and multiple requirements of lightweight systems, the 'image projection system has become the most popular sub-item in the optoelectronic industry. ^ 〇 Nowadays, the projection system can be divided into three according to the principle of projection. The large types are Liquid Crystal Display (LCD), Liquid Crystal on Silicon (LCOS), and Digital Light Processing (DLP), where DLP is due to With high brightness, correct tone reproducibility, fast response time, no noise, and light and thin, it is one of the new generation of popular projection systems. As shown in FIG. 1, in the DLP type projection system 1, digital control is employed, and the light from the light source η is concentrated by focusing on the light source η after focusing, and then passing through the red, green and blue color filters. After the film 13, it is shot on the Digital Micro-mirror Device (DMD). Since the digital micromirror wafer 14 has a plurality of minute movable lenses, the tilt angle and the deflection time of the movable lens are controlled via the drive electrodes, and the projection direction of the switching light is projected from the rear projection lens group 15 to the screen 16 for imaging. 1251112 In order to create a color gradation of the kneading surface, the movable lens on the digital micromirror wafer 14 produces a difference in luminous flux in a micro-motion manner to achieve this purpose, but the variation of the lens is limited, so that the variation is still insufficient. In order to solve the above problems, as shown in FIG. 2, the manufacturer announced in 2004 that he successfully developed a swinging device 20 which is coupled to the rear projection lens group 15 in the DLP projection system 1, and is further rotated by the swinging device 20. The difference in luminous flux is controlled to make the kneading surface more color-layered. In a structurally simple manner, as shown in FIG. 3, the swinging device 20 includes a shutter 21, an upper magnet 22 and a lower magnet 23, The shutter 21 has a light shielding portion 211 and a base portion 212. The light shielding portion 211 and the base portion 212 have a point 213. The support point 213 is fixed on the rear projection lens group 15. The base portion 212 of the shutter 21 is disposed around a flat plate. The coil 24, the upper magnet 22 and the lower magnet 23 are respectively disposed on opposite sides of the base portion 212 of the shutter 21. When the current of the flat coil 24 is passed, a magnetic field in the direction of the vertical shutter 21 is generated. By interacting with the magnetic field of the upper magnet 22 and the lower magnet 23, the shutter 21 can be oscillated in the horizontal direction, and the setting of the swinging device 20 will increase the contrast ratio of the projection system to 5000:1, effectively optimizing The quality of the noodles. As described above, the conventional swinging device 20 is required to wind the coil 24 on the shutter 21, which is limited by the planar structure of the base portion 212, so that the coils 24 are not easily wound, which easily affects the yield of the product, and the swing of the device. The structure is relatively unstable, and two large magnets 22 and 23 are required to increase the cost of the product. In view of this, how to provide an optical lens that is easy to assemble, stable in operation, and costing 1251112 j for use in a projection system In the group, it is one of the important topics of the S-projection system. SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a projection lens assembly having an assembly tolerance = low cost and a swinging device therefor. The shutter, the remote device reaches 34. The swinging device according to the invention comprises a shutter having an elastic element and a coil loop. Wherein, in the shutter 卩 — — 连 ; ; ; ; ; ; ; 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接Read: the wire is connected to the other end of the connecting element, and the elastic element: the optical component; the coil circuit is sheathed with the elastic element and the second:: the circuit system has a coil and a switching circuit, when the switching circuit is controlled by the electric_ The connecting element wire rotates to cause the shutter to oscillate. Further, the projection mirror _ according to the present invention includes a lens, a mirror body, and a swinging device. The 4' bracket of the lens is connected to the mirror body shutter, a quick-connecting component, a 1-component component, and: = 炊 系 包含 包含 包含 包含 包含 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接 连接, true connection component = connected to the shutter end system and the connection is connected to the first phase, and the spring two 1251112 =: 2:, the road system fits the elastic element and the connection component, and the wire connection component moves back and forth, so that the cover is utilized 1 connected component is connected to cover 2 so when the coil: port material can be metal, she only, quality =: = switch circuit control when the current is passed, the coil will cut the coil current, the elastic element will connect Yuan 2 V force 'moves back and forth by the connecting elements connecting the shutters =: The ΓΓΓ device is easy to assemble with a simple mechanical knot 2 = 'product conscience, so it can be more stable. χThis structure makes the swing action
【實施方式J 以下將參照相關圖式，說明 昭 影鏡頭組及其擺動裝置，龙中 :9較佳實施例之投 符號加以說明。 、同々凡件將以相同的參用 請參照圖4Α所示，依據本發明 置30,其係連結於一光學組件2,勺二仏貫施例之擺動裝 元件32、一彈性元件33及—έφ3 一遮板31、一連接 件2係為一投影鏡頭組，更难34。其中，光學組 影系統中之投影鏡頭組。、1 Λ况，其係利用於DLP投 1251112 遮板31係具有一遮光部311及一連動部312，遮光部 311係為不透明之材質所構成，例如：可選自塑膠或是金 屬等材質，且其係具有一缺口 311A，在本實施例中，缺口 311A係為半圓形，當然亦可依據不同的遮光效率需求而設 計不同之缺口 311A形狀。 連接元件32之一端係連接於遮板31之連動部312， 另一端連接於彈性元件33，其中，在本實施例中，連接元 件32之一端係樞設於遮板31之連動部312上，且連接元 件32與連動部312之連接處及遮光部311之間係具有一 擺動支點313，用以作為遮板31擺動之支點，該擺動支點 313係連結於光學組件2上，更特別來說擺動支點313係 以轴接之方式連結於光學組件2上。連接元件32之材質 係為金屬，在本實施例中，其係為一鐵桿。 彈性元件32之另一端則係固定於光學組件2上，且 彈性元件32可為一彈簧。 線圈迴路34係具有一線圈341與一開關迴路342,線 圈341係套合於彈性元件33與連接元件32,開關迴路342 係用以控制電流通過線圈341，以產生一磁場，使連接元 件32來回移動，而俾使遮板31左右擺動。 為使本發明之内容更易於理解，以下舉一實例，並請 參照圖4A與4B，說明依據本發明較佳實施例之擺動裝置 30之作動方式。 如圖4A所示，在本實施例中，擺動裝置30之結構係 如前所述，當開關迴路342控制線圈341通以電流時，線 1251112 圈341會產生一磁場，而與金屬材質之連接元件32產生 一相吸磁力，俾使連接元件32往一第一方向Di移動壓制 彈性元件33，此時，帶動與連接元件32連接之遮板31以 軸接於光學組件2之擺動支點313為支點擺向左邊（如圖 4A之箭頭所示），接著，如圖4B所示，當開關迴路342 控制以切斷線圈341電流時，線圈341即失去磁場，同時 被壓制之彈性元件33以其之回復彈力將連接元件32往一 第二方向D2彈回，此時，則帶動遮板31擺向右邊。其中， 第一方向Di係與第二方向D2相反。 在本實施例中，遮板31之擺動幅度最大約為30度， 換句話說，遮板31之擺動幅度係為±30度。 又，如圖5所示，依據本發明較佳實施例之投影鏡頭 組35包含一鏡頭351、一鏡身352、一支架353及一擺動 裝置30。 鏡身352係連接於鏡頭351之一端，支架353則係連 接於鏡身352。 擺動裝置30包含一遮板31、一連接元件32、一彈性 元件33以及一線圈迴路34。 在本實施例中，擺動裝置30之組件結構、連結關係 與作動方式係如前所述，故不再贅述，唯，擺動支點313 係連結於鏡身352,而彈性元件33之另一端則係固定於支 架353上。 綜上所述，依據本發明較佳實施例之投影鏡頭及其擺 動裝置係利用簡單機械結構之擺動裝置，來達到遮板擺動 11 1251112 之目的，將此擺動裝置應用於投影鏡頭組，可以有效補足 例如在DLP式投影系統中的晝面層次感，以及晝面之對比 度，更由於以簡單之組件來構成該擺動裝置結構，可有效 降低製作之成本，且相較於習知，本發明提供了一種作動 更穩定之擺動裝置。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1為一顯示習知之數位光源處理器投影系統的示意 圖， 圖2為一顯示習知之數位光源處理器投影系統之背投 鏡頭組及其擺動裝置的示意圖； 圖3為一顯示習知之擺動裝置的示意圖； 圖4A〜4B為一顯示依本發明較佳實施例之擺動裝置 的作動示意圖；以及 圖5為一顯示依本發明較佳實施例之投影鏡頭組及其 擺動裝置的示意圖。 元件符號說明： 1 DLP式投影系統 11 光源 12 透鏡 12 彩色濾、光片 數位微鏡晶片 背投鏡頭組 螢幕 光學組件 擺動裝置 遮板 遮光部 基部 支點 上磁鐵 下磁鐵 線圈 擺動裝置 遮板 遮光部 缺口 連動部 擺動支點 連接元件 彈性元件 線圈迴路 線圈 開關迴路 13 1251112 35 投影鏡頭組 351 鏡頭 352 鏡身 353 支架 Di 第一方向 d2 第二方向[Embodiment J] Hereinafter, a description will be given of a description of a preferred embodiment of the present invention by referring to the related drawings. For the same reference, please refer to FIG. 4A. According to the present invention, 30 is attached to an optical component 2, and the swinging component 32 and an elastic component 33 of the embodiment are disposed. —έφ3 A shutter 31 and a connector 2 are a projection lens group, which is more difficult. Among them, the projection lens group in the optical imaging system. In the case of the DLP, the 1251112 shutter 31 has a light blocking portion 311 and a linking portion 312. The light blocking portion 311 is made of an opaque material. For example, the material may be selected from plastic or metal. In the embodiment, the notch 311A is semi-circular. Of course, the shape of the notch 311A can be designed according to different shading efficiency requirements. One end of the connecting member 32 is connected to the linking portion 312 of the shutter 31, and the other end is connected to the elastic member 33. In this embodiment, one end of the connecting member 32 is pivotally disposed on the linking portion 312 of the shutter 31. And a connecting point 313 between the connecting portion 32 and the connecting portion 312 and the light blocking portion 311 is used as a pivot point for the swinging of the shutter 31. The swinging point 313 is coupled to the optical component 2, more specifically The swing support point 313 is coupled to the optical unit 2 in a pivotal manner. The material of the connecting member 32 is made of metal, which in the present embodiment is an iron. The other end of the elastic member 32 is fixed to the optical component 2, and the elastic member 32 can be a spring. The coil circuit 34 has a coil 341 and a switch circuit 342. The coil 341 is sleeved on the elastic member 33 and the connecting member 32. The switch circuit 342 is used to control the current through the coil 341 to generate a magnetic field, so that the connecting member 32 is back and forth. Move, and sway the shutter 31 to the left and right. In order to make the content of the present invention easier to understand, an example will be given, and with reference to Figures 4A and 4B, an operation of the swinging device 30 in accordance with a preferred embodiment of the present invention will be described. As shown in FIG. 4A, in the present embodiment, the structure of the oscillating device 30 is as described above. When the switch circuit 342 controls the coil 341 to pass current, the line 1251112 341 generates a magnetic field and is connected to the metal material. The component 32 generates a phase absorbing magnetic force, and causes the connecting member 32 to move the pressing elastic member 33 in a first direction Di. At this time, the shutter 31 connected to the connecting member 32 is driven to be pivoted to the swinging fulcrum 313 of the optical component 2 as The fulcrum is turned to the left (as indicated by the arrow in Fig. 4A). Next, as shown in Fig. 4B, when the switching circuit 342 controls to cut off the current of the coil 341, the coil 341 loses the magnetic field while the pressed elastic member 33 The returning elastic force rebounds the connecting member 32 in a second direction D2. At this time, the shutter 31 is swung to the right. The first direction Di is opposite to the second direction D2. In the present embodiment, the swing amplitude of the shutter 31 is at most about 30 degrees. In other words, the swing amplitude of the shutter 31 is ±30 degrees. Moreover, as shown in FIG. 5, the projection lens assembly 35 according to the preferred embodiment of the present invention includes a lens 351, a mirror body 352, a bracket 353, and a swinging device 30. The mirror body 352 is coupled to one end of the lens 351, and the bracket 353 is coupled to the mirror body 352. The oscillating device 30 comprises a shutter 31, a connecting member 32, an elastic member 33 and a coil circuit 34. In the present embodiment, the component structure, the connection relationship and the actuation mode of the oscillating device 30 are as described above, and therefore will not be described again. However, the oscillating fulcrum 313 is coupled to the mirror body 352, and the other end of the elastic member 33 is It is fixed to the bracket 353. In summary, the projection lens and the swinging device thereof according to the preferred embodiment of the present invention utilize the swinging device of a simple mechanical structure to achieve the purpose of the shutter swinging 11 1251112, and the swinging device can be effectively applied to the projection lens group. Complementing the kneading texture of the kneading surface, for example, in the DLP type projection system, and the contrast of the kneading surface, and further constituting the structure of the swinging device with a simple component, the cost of the manufacturing can be effectively reduced, and the present invention provides A swinging device that operates more stably. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing a conventional digital light source processor projection system, and FIG. 2 is a schematic diagram showing a rear projection lens assembly of a conventional digital light source processor projection system and a swinging device thereof; 4A to 4B are schematic views showing the operation of a swinging device according to a preferred embodiment of the present invention; and FIG. 5 is a view showing a projection lens assembly and a swing thereof according to a preferred embodiment of the present invention. Schematic diagram of the device. Description of component symbols: 1 DLP projection system 11 Light source 12 Lens 12 Color filter, optical digital micro-mirror wafer rear projection lens group Screen optical component Swing device shutter light-shielding base fulcrum magnet under magnet coil swing device shutter shading Linking swinging fulcrum connecting element elastic element coil circuit coil switching circuit 13 1251112 35 Projection lens group 351 lens 352 body 353 bracket Di first direction d2 second direction