^ 1294988 九、發明說明： 【發明所屬之技術領域】 本發明係提供一種可依據光感測器感測光線之結果控 制欲輸出之影像晝面之背投影系統，尤指一種可依據裝設 於反射鏡後方之光感測器感測光線之結果控制欲輸出之影 像畫面之背投影系統。 【先前技術】 近年來隨著用戶需求增加、製造成本下降、技術不斷創 新與新產品相繼問世，使得平面顯示產品的普及率不停攀 升’由於平面顯示產品的大型化障礙逐漸被先進的技術所 克服’大尺寸平面產品的定位從過去昂貴的專業設備，逐 漸轉變為現今大眾化影音產品，並發展出如家庭劇院等用 途。而應用於平面顯示產品之投影技術作用在於提供更大 尺寸與更具震減果的視覺體驗，各項投影技術的應用也 從前投影市場(fnmt p_etiGn display)延伸至f投影顯示 器(:_ection display)市場。背投影顯示器相對於傳統 的引投办.4不$疋一種新式的顯像技術，其顯示原理是將 投影機放置於螢幕後面，將顯示的影像由後端投射到榮幕 ㈣=A%顯μ對於抵抗環境光干擾的性能較佳， 比’無論在㈣物卜皆能繼的影像晝 二投㈣μ之顯轉幕具有高對比、高均勾 性、兩解析度、寬廣的視角、較㈣郷 1294988 等優點，在大型平面顯示產品的市場上極具競爭力。 請參閱第1圖與第2圖，第1圖為習知一背投影系統 10之外觀示意圖，第2圖為習知背投影系統10之内部元 件示意圖。背投影系統1〇係可為一背投影陰極射線管 (Cathode Ray Tube, CRT)顯示器、一背投影數位光源處理 (Digital light Processing，DLP)顯示器、一背投影石夕液晶 (Liquid Crystal on Silicon，LCOS)顯示器、或為一背投影液 _ 晶顯示器（Liquid Crystal display，LCD)等，端視其影像發射 源之類型。背投影系統10包含一殼體12，用來包覆内部 元件，一反射鏡14，安裝於殼體12内，一影像發射源16， 安裝於殼體12内且設置於反射鏡14之一侧，用來將一影 像晝面投射至反射鏡14，一影像接收面18，安裝於殼體 12上，用來接收反射鏡14反射影像發射源“所投射之影 像晝面’以顯示該影像晝面，以及複數個光感測器2〇，安 _ 裝於殼體12内且配置於影像接收面18之四周，用來感測 反射鏡14反射影像發射源16所投射之影像晝面之光線。 影像發射源16可為單一光源之發射源或為包含複數個光 源之發射源，影像發射源16可投射出影像晝面至反射鏡 14，而反射鏡14便會將影像發射源16所投射出之影像書 面反射至影像接收面18，而於影像接收面18上呈現該影 像晝面。 -1294988 若影像發射源16為包含複數個光源之發射源，例如由 二只CRT投影官所組成，則便有檢查甚或調整匯聚成像於 影像接收面18之影像晝面之必要，而設置於影像接收面 18之邊框上的光感測器2〇可感測投射至影像接收面18周 遭之光線，而背投影系統10可依據光感測器20所感測光 線之結果進行影像匯聚檢測之工作，而對之後欲輸出之影 像晝面進行影像調整之動作。此種光感測器2〇配置於影像 接收面18周遭之方式的好處在於避免光感測器2〇遮擋住 投射至影像接收面18之光線，進而遮蔽掉原來應該呈現在 影像接收面18上之影像晝面，而影響影像晝面之觀賞。然 而其缺點在於光感測器20之配置位置會受到投射至影像 接收面18之光線的光行進路線之限制，且由於光感測器 20僅能排列於影像接收面18之周圍，故造成光感測器20 只能檢查影像晝面最邊緣之匯聚狀況，而不能有效地檢查 整個影像晝面之匯聚狀況，且就算在影像接收面18之周圍 配置更多的光感測器2〇，對於整個影像晝面的匯聚檢查仍 無太大之裨益。 【發明内容】 本發明係提供一種可依據裝設於反射鏡後方之光感測 器感測光線之結果控制欲輸出之影像畫面之背投影系統， 以解決上述之問題。 1294988 含有一反射鏡，其具有透光性， 本發明之中請專利範圍係揭露1 測光線之結果控制欲輸出之影像晝 σ依據光感測器感 之背投影系統，其包 反射鏡之-侧，用來將—影像晝面^發射源，安裝於該 像接收面，用來接收該反射:至該反射鏡’一影 旦查而 鞔反射該影像發射源所投射之 衫像畫面’以顯示該影像晝面，— 夕一光感測器，安奘於 該反射鏡之另-侧，絲感_影像發射源投射至該反射 鏡之影像晝面中穿透該反射鏡之光線，以及—控制模組， 柄合於該光感難，絲依據該域難感測光線之結果 控制該影像發射源投射下一影像晝面。 本發明背投影系統之特點在於可依據裝設於反射鏡後 方之光感測器感測光線之結果控制欲輸出之影像畫面，如 此一來便可於不遮擋住投射至影像接收面之光線的前提 下，有效地檢查整個影像晝面之匯聚狀況。 【實施方式】 請參閱第3圖、第4圖與第5圖，第3圖為本發明一 背投影系統5〇之外觀示意圖，第4圖為本發明背投影系統 50之内部元件示意圖，第5圖為本發明背投影系統50之 功能方塊不思圖。月投影糸統5 〇係可為一为才又衫陰極射線 管顯示器、一背投影數位光源處理顯示器、一背投影矽液 晶顯示器、或為一背投影液晶顯示器等，端視其影像發射 -1294988 一 、&。月投影系統50包含一殼體52，用來包覆内部 ^ 一反射鏡54，安裝於殼體52内，其具有透光性， 衫像發射源56，安裝於殼體52内且設置於反射鏡54之 •丨 ___ m 1 太^ 1294988 IX. Description of the invention: [Technical field of the invention] The present invention provides a rear projection system capable of controlling an image to be outputted according to the result of sensing light by a light sensor, in particular, a device can be installed according to The result of sensing the light by the light sensor behind the mirror controls the rear projection system of the image to be output. [Prior Art] In recent years, with the increase in user demand, the decrease in manufacturing costs, the continuous innovation of technology and the emergence of new products, the popularity of flat display products has been rising. 'Because of the large-scale obstacles of flat display products, it has gradually been advanced technology. Overcoming the positioning of large-scale flat products has gradually changed from expensive professional equipment in the past to today's popular audio-visual products, and has developed applications such as home theaters. The projection technology applied to flat display products is to provide a larger size and more visually stunning visual experience. The application of various projection technologies extends from the front projection market (fnmt p_etiGn display) to the f projection display (:_ection display). market. The rear projection display is compared to the traditional pilot office. 4 is not a new development technology, the display principle is to place the projector behind the screen, the displayed image is projected from the back end to the honor screen (4) = A% display μ is better for resisting ambient light interference, and has higher contrast, higher uniformity, two resolutions, wide viewing angle, and better than the image that can be succeeded in the fourth (four) object.郷1294988 and other advantages, very competitive in the market of large flat display products. Referring to Figures 1 and 2, Figure 1 is a schematic diagram of the appearance of a conventional rear projection system 10, and Figure 2 is a schematic diagram of the internal components of the conventional rear projection system 10. The rear projection system 1 can be a rear projection cathode ray tube (CRT) display, a rear projection digital light processing (DLP) display, and a rear projection liquid crystal on silicon (Liquid Crystal on Silicon, LCOS) display, or a back projection liquid crystal display (LCD), etc., depending on the type of image transmission source. The rear projection system 10 includes a housing 12 for covering internal components, a mirror 14 mounted in the housing 12, and an image emitting source 16 mounted in the housing 12 and disposed on one side of the mirror 14. The image capturing surface 18 is mounted on the housing 12 for receiving the mirror 14 to reflect the image emitting source "projected image surface" to display the image. And a plurality of light sensors 2A mounted in the casing 12 and disposed around the image receiving surface 18 for sensing the light reflected by the mirror 14 from the image projected by the image emitting source 16 The image source 16 can be a single source or a source comprising a plurality of sources. The image source 16 can project an image plane to the mirror 14, and the mirror 14 projects the image source 16. The image is reflected in writing to the image receiving surface 18, and the image is displayed on the image receiving surface 18. -1294988 If the image emitting source 16 is a source containing a plurality of light sources, for example, composed of two CRT projection officers, Then there is a check or even an adjustment The image sensor 2 is disposed on the frame of the image receiving surface 18, and the light sensor 2 disposed on the frame of the image receiving surface 18 can sense the light incident on the image receiving surface 18, and the rear projection system 10 can be based on The light sensor 20 senses the result of the light to perform image convergence detection, and performs image adjustment on the image surface to be outputted later. The light sensor 2 is disposed on the image receiving surface 18 The advantage is that the light sensor 2 is prevented from blocking the light projected onto the image receiving surface 18, thereby obscuring the image surface which should be present on the image receiving surface 18, and affecting the viewing of the image surface. However, the disadvantage is that the light The position of the sensor 20 is limited by the light travel path of the light projected onto the image receiving surface 18, and since the light sensor 20 can only be arranged around the image receiving surface 18, the light sensor 20 is only It is possible to check the convergence of the outermost edges of the image surface, and it is not possible to effectively check the convergence of the entire image surface, and even if more light sensors are disposed around the image receiving surface 18〇 The present invention provides a method for controlling the back of an image to be output according to the result of sensing light by a light sensor mounted behind the mirror. Projection system to solve the above problems. 1294988 contains a mirror, which has light transmissivity, and the patent scope of the present invention discloses that the result of measuring light is controlled by the image to be output 昼σ according to the back of the light sensor a projection system, on the side of the package mirror, for mounting an image-emitting surface to the image receiving surface for receiving the reflection: to the mirror, a shadow is detected and reflected by the image The image of the shirt image projected by the source is used to display the image surface, and the illuminating sensor is mounted on the other side of the mirror, and the silky image source is projected into the image plane of the mirror. The light that penetrates the mirror, and the control module, the handle is difficult to be combined with the light, and the wire controls the image source to project the next image plane according to the result of the hard-to-sensing light. The rear projection system of the present invention is characterized in that the image to be output is controlled according to the result of sensing the light by the light sensor installed behind the mirror, so that the light projected onto the image receiving surface can be blocked. Under the premise, effectively check the convergence of the entire image. [Embodiment] Please refer to FIG. 3, FIG. 4 and FIG. 5, FIG. 3 is a schematic diagram of the appearance of a rear projection system 5 of the present invention, and FIG. 4 is a schematic diagram of internal components of the rear projection system 50 of the present invention. 5 is a functional block diagram of the rear projection system 50 of the present invention. The monthly projection system can be used for a cathode ray tube display, a rear projection digital light source processing display, a rear projection 矽 liquid crystal display, or a rear projection liquid crystal display, etc., and its image transmission -1294988 First, & The monthly projection system 50 includes a housing 52 for enclosing the internal mirror 54 and mounted in the housing 52. The housing 52 has a light transmissive property. The shirt image is mounted on the housing 52 and is disposed in the housing 52. Mirror 54•丨___ m 1 too
，用來將一影像晝面投射至反射鏡54，一影像接收面 58，安裝於殼體52上，其可為一方形顯示幕，用來接收反 2鏡54反射影像發射源56所投射之影像晝面，以顯示該 衫像晝面，以及至少一光感測器6〇，安裝於反射鏡抖之 另一侧，用來感測影像發射源56投射至反射鏡54之影像 晝面中穿透反射鏡54之光線，其係可為—光電感測器。如 第5圖所示，背投影系統5〇另包含一控制模組幻，用來 依據光感測器60感測光線之結果控制影像發射源56投射 下衫像晝面’一類比多工器（analog multiplexer) 64，用 來接收至少一光感測器60感測光線之資料，以及一類比數 位轉換裔（analog如digital c〇nverter) %，用來接收類比多 工器64所傳來之資料，並將該資料轉換成數位資料並傳送 至控制模組62 〇 卜〜像發射源56係安裝於反射鏡54與影像接收 面58之間’其可為單_光源之發射源或為包含複數個光源 之發射源，影像發射源56包含有-影像晝面產生器68 /、 用=將由控制模組62所傳來之影像信號轉化為一相對應 ^影像晝面，以及—投影鏡頭組7G，用來接收且調整景Γ像 旦面產生器68所產生之影像畫面’並將該調整過後之影像 1294988 晝面投射至反射鏡54。影像發射源56可投射出影像書面 至反射鏡54，而反射鏡54便會將影像發射源56所投射出 之影像晝面反射至影像接收面58，而於影像接收面58上 呈現該影像晝面。 於此，對本發明背投影系統50之工作原理作—說明， 首先控制模組62會輸出一影像信號至影像畫面產生器 68,而影像畫面產生器68會將該影像信號轉化為一相對應 • 之影像晝面，之後投影鏡頭組70便會接收且調整影像書面 產生器68所產生之影像畫面，並將該調整過後之影像書面 投射至反射鏡54，而反射鏡54便會將影像發射源56所投 射出之影像晝面反射至影像接收面58,而於影像接收面％ 上呈現該影像晝面。而於投射影像畫面至反射鏡54之過程 中，由於反射鏡54係具有透光性，而光感測器60係安裝 於反射鏡54之另一侧’故其可感測到影像發射源56投射 φ 至反射鏡54之影像畫面中穿透反射鏡54之光線，而各光 感測器60在感受到不同的穿透光時，會因各穿透光顏色與 亮度之不同、穿透光照射於光感測器60之面積不同等，而 產生不同之输出電壓，進而輸出相對應之感測資料至類比 多工器64,之後類比多工器64再將該資料傳輸至類比數 位轉換斋66 ’而類比數位轉換器66便會將該類比資料轉 換成數位資料並傳送至控制模組62，當控制模組62接收 到類比數位轉換器66所傳來之數位資料時，會依據各光感 11 1294988 矣》60感劂光線之結果檢視目前影像發射源允所投射之 匯聚狀況'影像發射源％所發射光線之亮度是 弱自平衡是否偏移等，再適時地調整之後欲輸出之 • ^晝面’而控制影像發射源56投射下—影像畫面，至於 里疋方式可為控制模組62依據光感測器6〇感測光線之結 調整投_独7G，藉以調整影像晝面社小或位置， =為控制彳歧62依據光感測|| 6G感測光線之結果調整影 鲁 患面產生器68所產生影像晝面之亮度等。 此外，根據幾何光學之特性，影像發射源56所發射光 線至反射鏡54之人射角會等於反射鏡54反射人射光之反 射角因此影像發射源56投射影像畫面至反射鏡54上之 各位置係可對應至反射鏡54反射影像晝面至影像接收面 上之各位置，也就是說觀看者於影像接收面58上觀看 到影2晝面的各個位置係可對應到反射鏡54上之各個位 • f，猎以對應到設置於反射鏡54另一侧之光感測器60的 TI又置位置因此光感測器6 〇感測光線之結果係可代表影像 接收面58所接收之影像晝面於相對應位置之檢測結果。 而本發明光感測器60安裝之個數與位置，可端視設計 而求而疋，舉例來說若希望背投影系統5〇自我匯聚檢測之 精確度提高的話，則可於反射鏡54之另一侧相對應於影像 接收面58之各方位的位置分別安裝數個光感測器6〇，但 12 1294988 精確度與安裝光感測器60所需增加之成本兩者間則需作 一考量。 综上所述，由於本發明之光感測器6〇係裴設於反射鏡 54後方，如此一來便可於不遮擋住投射至影像接收面％ 之光線的前提下，有效地檢查整個影像晝面之匯聚狀況或 是影像發射源56的亮度是否減弱、白平衡是否偏移等；再 者，配置在光感測器60前方之反射鏡54會過濾掉大量的 _雜政S使得光感測器60在匯聚檢測時能有更好的檢測品質。 相較於習知之背投影系統，本發明之背投影系統可於 光感測器不遮擋住投射至影像接收面之光線的前提下，有 效地檢查整個影像晝面之匯聚狀況或是影像發射源的亮度 是否減弱、白平衡是否偏移等，而可改善習知光感測器之 配置位置所造成僅能檢查影像晝面最邊緣之狀態，而不能 •有效地檢查整個影像晝面之狀態的缺憾。 —、上所述僅為本發明之較佳實施例，凡依本發明申請專 利乾圍所做之均等變化與修飾，皆應屬本發日月專利之涵蓋範圍。 【圖式簡單說明】 ^ 1圖為f知f投料m卜觀示㈣。 第2圖為習知背投影系統之㈣元件示意圖。 13 .1294988 第3圖為本發明背投影系統之外觀示意圖。 第4圖為本發明背投影系統之内部元件示意圖。 第5圖為本發明背投影系統之功能方塊示意圖。 【主要元件符號說明】 10、50 背投影系統 12、52 殼體 14、54 反射鏡 16、56 影像發射源 18、58 影像接收面 20 ^ 60 光感測器 62 控制模組 64 類比多工器 66 類比數位轉換器 68 影像晝面產生器 70 投影鏡頭組The image receiving surface 58 is mounted on the housing 52. The image receiving surface 58 is a square display screen for receiving the projection of the reflective image source 56 by the inverse mirror 54. The image is displayed on the side of the image to display the image of the shirt, and at least one light sensor 6 is mounted on the other side of the mirror for sensing that the image source 56 is projected into the image plane of the mirror 54. The light that penetrates the mirror 54 can be an optical sensor. As shown in FIG. 5, the rear projection system 5 〇 further includes a control module phantom for controlling the image emission source 56 to project the lower hood like the multiplexer according to the result of the light sensor 60 sensing the light. (analog multiplexer) 64, configured to receive at least one light sensor 60 to sense light, and an analogous digital conversion (analog such as digital c〇nverter) % for receiving the analog multiplexer 64 The data is converted into digital data and transmitted to the control module 62. The image source 56 is mounted between the mirror 54 and the image receiving surface 58. It may be a single source or a source of light source. The source of the plurality of light sources, the image source 56 includes an image buffer generator 68 /, converts the image signal transmitted by the control module 62 into a corresponding image plane, and - the projection lens group 7G is used to receive and adjust the image frame generated by the scene generator 68 and project the adjusted image 1294988 onto the mirror 54. The image source 56 can project the image to the mirror 54 and the mirror 54 will reflect the image projected by the image source 56 to the image receiving surface 58 and present the image on the image receiving surface 58. surface. Herein, the operation principle of the rear projection system 50 of the present invention is described. First, the control module 62 outputs an image signal to the image frame generator 68, and the image frame generator 68 converts the image signal into a corresponding image. After the image is scanned, the projection lens set 70 then receives and adjusts the image image produced by the image writer 68, and projects the adjusted image in writing to the mirror 54, and the mirror 54 will emit the image. The projected image of the image is reflected to the image receiving surface 58 and the image surface is presented on the image receiving surface %. In the process of projecting the image image to the mirror 54, since the mirror 54 is translucent, and the photo sensor 60 is mounted on the other side of the mirror 54, it can sense the image emission source 56. Projecting φ to the light passing through the mirror 54 in the image frame of the mirror 54, and when the light sensor 60 senses different penetrating light, the light penetrates the light due to the difference in color and brightness of each penetrating light. The area of the light sensor 60 is different, and different output voltages are generated, and the corresponding sensing data is output to the analog multiplexer 64, and then the analog multiplexer 64 transmits the data to the analog digital conversion. 66' and the analog-to-digital converter 66 converts the analog data into digital data and transmits it to the control module 62. When the control module 62 receives the digital data transmitted by the analog-to-digital converter 66, it depends on the light. Sense 11 1294988 矣》60 劂 劂 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的 的^昼面' The control image transmission source 56 projects the image-down image, and the control module 62 adjusts the projection of the light sensor according to the light sensor 6〇, so as to adjust the image size or position. = for the control 62 62 62 according to the light sensing | | 6G sense the result of the light to adjust the brightness of the image produced by the shadow face generator 68 and so on. In addition, according to the characteristics of the geometrical optics, the angle of incidence of the light emitted by the image source 56 to the mirror 54 is equal to the angle of reflection of the mirror 54 reflecting the human light, so the image source 56 projects the image onto each of the mirrors 54. Corresponding to each position of the mirror 54 reflecting the image plane to the image receiving surface, that is, each position of the viewer viewing the image on the image receiving surface 58 can correspond to each of the mirrors 54. The position f is hunted to correspond to the TI position of the photo sensor 60 disposed on the other side of the mirror 54. Therefore, the result of the photo sensor 6 〇 sensing the light can represent the image received by the image receiving surface 58. The detection result of the surface at the corresponding position. However, the number and position of the optical sensor 60 of the present invention can be viewed from the perspective of the design. For example, if the accuracy of the self-convergence detection of the rear projection system 5 is increased, the mirror 54 can be used. The other side is mounted with a plurality of photosensors 6 at positions corresponding to the respective positions of the image receiving surface 58, but the accuracy of 12 1294988 and the cost of installing the photosensor 60 are required to be Consideration. In summary, since the photo sensor 6 of the present invention is disposed behind the mirror 54, the entire image can be effectively inspected without blocking the light projected onto the image receiving surface. Whether the brightness of the image emitting source 56 is weakened, whether the white balance is shifted, or the like; in addition, the mirror 54 disposed in front of the photo sensor 60 filters out a large amount of _zas S to make the light sense The detector 60 can have a better quality of detection during convergence detection. Compared with the conventional rear projection system, the rear projection system of the present invention can effectively check the convergence state of the entire image surface or the image transmission source under the premise that the light sensor does not block the light projected onto the image receiving surface. Whether the brightness is weakened, whether the white balance is shifted, or the like can improve the state in which the position of the conventional photo sensor can only check the state of the edge of the image, but cannot effectively check the state of the entire image. The above description is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made by the patent application according to the present invention should be covered by the patent of the present invention. [Simple description of the figure] ^ 1 picture shows f knowing f feeding m (view) (4). Figure 2 is a schematic diagram of the components of the (4) conventional rear projection system. 13 .1294988 Fig. 3 is a schematic view showing the appearance of the rear projection system of the present invention. Figure 4 is a schematic diagram of the internal components of the rear projection system of the present invention. Figure 5 is a functional block diagram of the rear projection system of the present invention. [Main component symbol description] 10, 50 Rear projection system 12, 52 Housing 14, 54 Mirror 16, 56 Image source 18, 58 Image receiving surface 20 ^ 60 Light sensor 62 Control module 64 Analog multiplexer 66 Analog-to-Digital Converter 68 Image Facet Generator 70 Projection Lens Set