200914980 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種色輪，尤其涉及一種可改善處理器與濾 光片之間時序同步問題之色輪。 【先前技術】 目前，投影儀主要分為LCD式、DLP式（Digital Light Processing )及LCos式三種，其中DLP投影儀採用 DMD(Digital Micromirror Device)微鏡片反射技術，並採用色 輪（Color Wheel)以完成對色彩之分離和處理。 於DMD投影系統中，光源發出之白光藉由聚焦透鏡聚 焦於色輪上，色輪主要係由紅、綠、藍等彩色濾光片之組合， 藉由高速馬達使彩色濾光片組轉動，以將白光進行分色，然 後將特定顏色之光束發射到DMD表面上。DMD表面由與圖 元數量對應之小反射鏡組成，這些小反射鏡根據視頻訊號之 控制而轉動，當小反射鏡轉動到其反射光束經過投影儀之透 , 鏡時，表示該圖元點打開，當小反射鏡轉動到其反射光束偏 離投影儀之透鏡時，表示該圖元點關閉，打開和關閉之時間 比表不該圖元之党度。當紅光射到DMD表面上時，DMD上 之鏡片按照紅色視頻訊號將這些小鏡子旋轉到開或關，使得 需要顯示之反射光束經過投影儀之透鏡投影到大螢幕上，綠 色和藍色光及視頻訊號亦係如此工作，人體視覺系統集中投 影出來之紅、綠、藍畫面便看到了一全彩色圖像。 請參閱圖1，其為先前之一種色輪1〇〇。該色輪1〇〇包 括濾光片組10、固定件20、馬達31以及粘貼於固定件2〇 200914980 側壁之時標（Timing Mark) 40、感測器30及處理器25。濾、 光片組10包括有紅色濾光片12、綠色濾光片14和藍色濾光 片16，三者都為扇形並構成一圓盤。濾光片組10固設於固 定件20上，馬達30帶動固定件20之轉動，從而驅動三色濾 光片組10轉動。時標40用於幫助投影儀系統識別當前三色 濾光片組10中紅色濾光片12、綠色濾光片14和藍色濾光片 16之位置。當時標40設置於固定件20之側壁且對應濾光片 組10為紅色濾光片12段時，感測器30不間斷地發射光束 17至固定件20之侧壁上，光束17剛好射到時標40上時， 該光束17被時標40吸收，此刻，光束17不會反射至感測器 30,因此感測器30便知道所述色輪圓盤之傳動到紅色濾光片 12位置，即此刻投影出來之視頻圖像為紅色，並將當前色輪 圓盤之位置情況傳達至處理器25，處理器25根據色輪圓盤 之轉動情況控制DMD上之鏡片旋轉到開或關，經過投影鏡 頭將各色彩合成後將影像投射至螢幕。由於，色輪1〇〇之濾 光片組10之各色濾光片之間之位置事先已分佈好，處理器 25知道一單色濾光片之位置便可推斷出整個濾光片組10之 轉動位置，以便處理器25精準地切換各顏色之時機。可見， 於高速旋轉之濾光片組10中，投影儀器對色輪100當前顏色 之識別直接影響著成像之色彩品質。 先前技術之時標40 —般採用反射率低之黑色吸光介質 片做成，惟，黑色吸光介質片之反射率再低亦會有少量反射， 如此將影響感測器30之靈敏度，影響處理器25進行後續之 色彩合成處理，容易出現處理器與濾光片組之間時序不同步 200914980 之問題，從而造成晝質不清晰，色彩不畔明。 【發明内容】 7个砰明 有鐾於此，有必要握徂 間時序同步問題同時散處理器與遽光片組之 器及處=輪所= 組、固定件、馬達、感測 濾光片。所述岐件包第^包括複數個不同顏色之扇形 表面及設於第-表面與第^面、與第—表面相對之第〆 片組固定於所述固定件G表::間之側壁。所述多色Μ 片=二於帶動固定件旋轉以驅動多色滤光 束到固定件之側壁上，接二I之侧壁設置’用於發2 把當前多色滤先片组之/ 側壁反射回來之光束 理哭#^ H立置情況傳達至所述處理器，所述處 理态根據多色濾光片組之 固定件之側壁上開設有—貫穿二控：色彩合成處理:= 丁 At 貝牙開口，該貫穿開口於馬達帶動 下’月b轉動到與感測器發射之光束相對準。 相對於先前技術，所述色輪之固定件之側壁上開設^貫 貫穿開口全部吸收感測器發射出之光束，而不會 進过再反射ΐ感測器，提高了感測器之靈敏度，使感 =更準確地把切多色濾光片叙之位置傳達至處理器，以 便處理器精準地切換各顏色之時機，從而可有效避免晝 清晰i色彩不鮮明問題。同時，馬達旋轉時，該蚊i側壁 上之貝穿開Π隨著-起轉動’從而形成擾流，大大提 之散熱效果。 輪 200914980 【實施方式】 以下將結合附圖對本發明作進一步之詳細說明。 請參閱圖2，為本發明實施例之色輪200，其包括濾光 片組50、固定件60、馬達70、感測器90及處理器55。 本實施例中，所述濾光片組50包括複數個不同顏色之 扇形濾光片有紅色濾光片52、綠色濾光片54和藍色濾光片 56,實際應用中，所述濾光片50亦可為四色濾光片RGB+W， 其中W表示白色；六色濾光片RGBRGB等，並不限於本實 施例。 所述固定件60為一中空之筒狀結構，其包括第一表面 61、與第一表面61相對之第二表面62及設於第一表面61 與第二表面之間之侧壁63。所述濾光片組50可以藉由膠合 之方式固定於固定件60之第二表面62上，亦可以藉由螺合 之方式固定於固定件60之第二表面62上。所述固定件600 之側壁63上開設有一貫穿開口 80，本實施例中，所述貫穿 開口 80之位置對應於紅色濾光片52段位置，實際應用中， k 該貫穿開口80之位置亦可對應於綠色濾光片54段或藍色濾 光片56段位置，並不限於本實施例。 所述馬達70設置於固定件60之第一表面61侧且遠離 濾光片組50。所述馬達70用於帶動固定件60旋轉以驅動濾 光片組50旋轉。 所述感測器90正對開設有貫穿開口 80之固定件60之 側壁63設置，用於垂直地發射光束27到固定件60之侧壁 63上，並接收反射回來之光束27。所述光束27可以為紅外 10 200914980 光、Ί·、外光或雷射中之〆種。優選地，所述光束27為一紅外 線光。本實施例中，所述貫穿開口 8〇之尺寸大於所述光束 27之直徑。所述感測器9〇不間斷地發射光束27至固定件6〇 之側壁63上，光束27剛好射到貫穿開口 80上時，該光束 27被貫穿開口 80吸收，此刻，光束27不會反射至感測器9〇, 因此感測器90便知道所述濾光片組5〇之傳動到紅色濾光片 52位置，即此刻投影出來之視頻圖像為紅色，並將當前色輪 2⑴3之濾光片組50之轉動位置情況傳達至處理器55進行後 績之色彩合成處理。 、抑所述處理器55與所述感測器90電性連接，用於接收感 測态90傳達過來之濾光片組5〇之轉動位置情況，由於，色 輪200之濾光片組5〇之各色濾光片之間之位置事先已分饰 好，處理器55知道一單色濾光片之位置便可 片，5〇之轉動位置，如此，處理器55精準地 時機。使得處理器55與濾光片組50之間時序同步。 下面結合上述結構以詳細敍述本發明之工作原理：鬲達 7〇轉動時帶動所述固定件60及設置於固定件6〇第二表面& 上之濾光片組50同步旋轉，同時，所述感測器9〇不間斷地 發射光束27 ’並接收反射回來之光束27，當固定件之伯 置轉到所述貫穿開口 80對準光束27之位置時，貫穿開 吸收該發射光束’使得感測器9 0感應不到反射光訊U。1賓 施例中，所述貫穿開口 80之位置對應於紅色濾光°片八立 置，因此，感測器90便知道此時多色濾光片組5〇轉動 所述濾光片組50之各色濾光片之間之位置事先已分佈好，處 11 200914980 理器55知道一單色濾光片之位置便可推斷出整個濾光片組 50之轉動位置，感測器60把多色濾光片組50之轉動位置情 況傳達至處理器55，並以此作為控制多色濾光片組50與 DMD (圖未示）進行同步以及光調製之依據，從而達到準確 之彩色光合成。 相對於先前技術，所述色輪之固定件之侧壁上開設一貫 穿開口，該貫穿開口全部吸收感測器發射出之光束，而不會 使所述光束再反射至感測器，提高了感測器之靈敏度，使感 測器更準確地把當前多色濾光片組之位置傳達至處理器，以 便處理器精準地切換各顏色之時機，從而可有效避免晝質不 清晰，色彩不鮮明問題。同時，馬達旋轉時，該固定件侧壁 上之貫穿開口隨著一起轉動，從而形成擾流，大大提高色輪 之散熱效果。 綜上所述，本發明符合發明專利要件，爰依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施 方式，本發明之範圍並不以上述實施方式為限，舉凡 熟悉本案技藝之人士援依本發明之精神所作之等效修 飾或變化，皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係一種先前之色輪結構示意圖； 圖2係本發明實施例之色輪結構示意圖。 【主要元件符號說明】 色輪 100,200 光束 17,27 濾光片組 10，50 紅色濾光片 12，52 12 200914980 綠色滤光片 14 >54 藍色濾光 16，56 處理器 25，55 固定件 20 >60 第一表面 61 第二表面 62 侧壁 63 馬達 31 >70 貫穿開口 80 感測器 30，90 時標 40 13BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color wheel, and more particularly to a color wheel that can improve the timing synchronization problem between a processor and a filter. [Prior Art] At present, projectors are mainly divided into LCD type, DLP type (Digital Light Processing) and LCos type. Among them, DLP projector adopts DMD (Digital Micromirror Device) microlens reflection technology and adopts Color Wheel. To complete the separation and processing of colors. In the DMD projection system, the white light emitted by the light source is focused on the color wheel by a focusing lens, and the color wheel is mainly composed of a combination of color filters such as red, green, and blue, and the color filter group is rotated by the high speed motor. To separate the white light, then a specific color beam is emitted onto the DMD surface. The DMD surface consists of small mirrors corresponding to the number of primitives. These small mirrors rotate according to the control of the video signal. When the small mirror rotates to the reflected beam passing through the projector, the mirror indicates that the pixel is open. When the small mirror rotates to the lens whose reflected beam deviates from the projector, it indicates that the pixel point is closed, and the opening and closing time is longer than the party indicating the primitive. When red light hits the surface of the DMD, the lens on the DMD rotates the small mirrors on or off according to the red video signal, so that the reflected beam that needs to be displayed is projected onto the large screen through the lens of the projector, green and blue light and video. The signal is also working like this, and the red, green and blue images that are collectively projected by the human visual system see a full-color image. Please refer to FIG. 1 , which is a previous color wheel 1 〇〇. The color wheel 1 includes a filter set 10, a fixing member 20, a motor 31, and a Timing Mark 40 attached to the side wall of the fixing member 2, 200914980, a sensor 30, and a processor 25. The filter and light sheet set 10 includes a red color filter 12, a green color filter 14 and a blue color filter 16, all of which are fan-shaped and constitute a disk. The filter set 10 is fixed to the fixing member 20, and the motor 30 drives the rotation of the fixing member 20 to drive the three-color filter set 10 to rotate. The time scale 40 is used to assist the projector system in identifying the positions of the red color filter 12, the green color filter 14, and the blue color filter 16 in the current three color filter group 10. When the target 40 is disposed on the side wall of the fixing member 20 and the corresponding filter group 10 is the red filter 12 segment, the sensor 30 continuously emits the light beam 17 to the side wall of the fixing member 20, and the light beam 17 just hits When the time scale 40 is on, the light beam 17 is absorbed by the time scale 40. At this moment, the light beam 17 is not reflected to the sensor 30, so the sensor 30 knows the position of the color wheel disk to the red color filter 12. That is, the video image projected at this moment is red, and the position of the current color wheel disc is transmitted to the processor 25, and the processor 25 controls the rotation of the lens on the DMD to be turned on or off according to the rotation of the color wheel disc. After the color is combined by the projection lens, the image is projected onto the screen. Since the position between the color filters of the color filter group 10 of the color wheel 1 is distributed in advance, the processor 25 knows the position of a monochromatic filter to infer the entire filter group 10. The position is rotated so that the processor 25 can precisely switch the timing of each color. It can be seen that in the high-speed rotating filter group 10, the recognition of the current color of the color wheel 100 by the projection instrument directly affects the color quality of the image. The prior art time scale 40 is generally made of a black light absorbing medium sheet having a low reflectance. However, the black absorbing medium sheet has a low reflectance and a small amount of reflection, which affects the sensitivity of the sensor 30 and affects the processor. 25 Subsequent color synthesis processing is prone to the problem that the timing of the processor and the filter group is not synchronized with 200914980, resulting in unclear quality and unclear color. [Summary of the Invention] 7 砰 鐾 鐾 , , , , , , , , , 7 7 7 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序 时序. The cymbal package includes a plurality of fan-shaped surfaces of different colors and a first gusset group disposed on the first surface and the second surface opposite to the first surface, and is fixed to the side wall of the fixing member G::. The multi-color = piece=2 is driven to rotate the fixing member to drive the multi-color filter beam to the side wall of the fixing member, and the side wall of the second I is disposed for sending 2 the current multi-color filter group/side wall reflection The beam is returned to the processor, and the processing state is transmitted to the processor according to the side wall of the fixing member of the multi-color filter group - through two controls: color synthesis processing: = Ding At A tooth opening that is rotated by the motor to 'cury b' to be aligned with the beam emitted by the sensor. Compared with the prior art, the sidewalls of the fixing members of the color wheel all open the light beam emitted by the sensor, and do not enter the re-reflecting sensor, thereby improving the sensitivity of the sensor. Sense = more accurately conveys the position of the cut multi-color filter to the processor, so that the processor can accurately switch the timing of each color, so as to effectively avoid the problem that the color is not clear. At the same time, when the motor rotates, the shell on the side wall of the mosquito i passes through the opening and turns to form a spoiler, which greatly improves the heat dissipation effect. Wheels 200914980 [Embodiment] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings. Referring to FIG. 2, a color wheel 200 according to an embodiment of the present invention includes a filter set 50, a fixture 60, a motor 70, a sensor 90, and a processor 55. In this embodiment, the filter set 50 includes a plurality of fan filters of different colors, a red filter 52, a green filter 54, and a blue filter 56. In practical applications, the filter The sheet 50 may also be a four-color filter RGB+W, where W represents white, a six-color filter RGBRGB, etc., and is not limited to this embodiment. The fixing member 60 is a hollow cylindrical structure including a first surface 61, a second surface 62 opposite to the first surface 61, and a side wall 63 disposed between the first surface 61 and the second surface. The filter set 50 can be fixed to the second surface 62 of the fixing member 60 by gluing, or can be fixed to the second surface 62 of the fixing member 60 by screwing. A through opening 80 is defined in the side wall 63 of the fixing member 600. In this embodiment, the position of the through opening 80 corresponds to the position of the red filter 52. In practical applications, the position of the through opening 80 is also Corresponding to the position of the green filter 54 segment or the blue color filter 56 segment, it is not limited to this embodiment. The motor 70 is disposed on the first surface 61 side of the fixing member 60 and away from the filter group 50. The motor 70 is used to drive the fixing member 60 to rotate to drive the filter set 50 to rotate. The sensor 90 is disposed opposite the side wall 63 of the fixture 60 having a through opening 80 for vertically emitting the beam 27 onto the side wall 63 of the fixture 60 and receiving the reflected beam 27. The beam 27 can be of the infrared 10 200914980 light, Ί·, external light or laser. Preferably, the beam 27 is an infrared light. In this embodiment, the through opening 8 is larger in size than the diameter of the light beam 27. The sensor 9 emits the light beam 27 to the side wall 63 of the fixing member 6 without interruption. When the light beam 27 just hits the through opening 80, the light beam 27 is absorbed by the through opening 80. At this moment, the light beam 27 does not reflect. To the sensor 9〇, the sensor 90 knows the position of the filter group 5〇 to the red filter 52, that is, the video image projected at this moment is red, and the current color wheel 2(1)3 The rotational position of the filter set 50 is transmitted to the processor 55 for color synthesis processing of the subsequent performance. The processor 55 is electrically connected to the sensor 90 for receiving the rotational position of the filter set 5〇 transmitted by the sensing state 90, because the filter set 5 of the color wheel 200 The position between the color filters of the cymbal has been previously decorated, and the processor 55 knows that the position of a monochromatic filter can be sliced, and the position of rotation of the cymbal is 5, so that the processor 55 has an accurate timing. The timing between the processor 55 and the filter set 50 is synchronized. In the following, the working principle of the present invention will be described in detail in conjunction with the above structure: the fixing member 60 and the filter group 50 disposed on the second surface & The sensor 9 〇 continuously emits the light beam 27 ′ and receives the reflected light beam 27, and when the fixture is placed at the position where the through-opening 80 is aligned with the light beam 27, the absorption beam is absorbed through the opening The sensor 90 does not sense the reflected light U. In the case of the embodiment, the position of the through opening 80 corresponds to the red filter, and the sensor 90 knows that the multicolor filter set 5 turns the filter set 50 at this time. The position between the filters of the respective colors has been distributed in advance, and the position of a monochromatic filter can be inferred from the position of a monochromatic filter, and the position of the entire filter group 50 can be inferred. The rotational position of the filter set 50 is communicated to the processor 55 and serves as a basis for controlling the multi-color filter set 50 to be synchronized with the DMD (not shown) and to modulate the light to achieve accurate color light synthesis. Compared with the prior art, a through opening is formed in the sidewall of the fixing member of the color wheel, and the through opening totally absorbs the light beam emitted by the sensor without re-reflecting the light beam to the sensor, thereby improving The sensitivity of the sensor enables the sensor to more accurately convey the position of the current multi-color filter set to the processor, so that the processor can accurately switch the timing of each color, thereby effectively avoiding unclear enamel and unclear colors. problem. At the same time, when the motor rotates, the through openings on the side wall of the fixing member rotate together, thereby forming a spoiler, which greatly improves the heat dissipation effect of the color wheel. In summary, the present invention complies with the requirements of the invention patent, and proposes a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a structure of a color wheel of the prior art; FIG. 2 is a schematic view showing the structure of a color wheel according to an embodiment of the present invention. [Main component symbol description] Color wheel 100, 200 Beam 17, 27 Filter group 10, 50 Red filter 12, 52 12 200914980 Green filter 14 > 54 Blue filter 16, 56 Processor 25, 55 Fixed Piece 20 > 60 First surface 61 Second surface 62 Side wall 63 Motor 31 > 70 Through opening 80 Sensor 30, 90 Time scale 40 13