201019189 ' 六、發明說明： - 【發明所屬之技術領域】 本發明是有關於一種感測系統（sensing system )，且特別 是有關於一種具有一反射元件（reflective element)之感測系 統。 【先前技術】 觸控系統（touch system)已經有許多相關專利加以揭露， 例如美國專利號第4/782,328號與第6,803,906之專利。上述兩 篇專利所揭露之觸控系統各自都需要至少兩個感測器 ❿ （sensor) ’使得上述各篇專利所揭露之觸控系統的生產成本 (cost of production)較高。以下將以上述兩篇專利的其中之 一作說明。 請參考圖1，其繪示習知之一種觸控螢幕系統的示意圖。 美國專利號第4,782,328號之專利所揭露之觸控螢幕系統 (touch screen system) 100 包括一面板（panei) no、一第一 光感測器（photosensor) 120、一第二光感測器130與一處理 器（processor)140。面板110具有一觸控螢幕區域（touch screen 〇 area) 112 ’其外型為一矩形。第一光感測器120與第二光感 測器130配置於觸控螢幕區域112之一邊（boundary) 112a的 相對兩端，且第一光感測器120的感測範圍 (sensing range ) 與第二光感測器130的感測範圍分別涵蓋觸控螢幕區域112。 此外，第一光感測器120與第二光感測器13〇電性連接至處理 器 140。 當一指示物（pointer) 150觸控上述觸控螢幕區域112時， 第一光感測器120與第二光感測器130分別沿著一第一感測路 線（sensing path ) 162與一第二感測路線164感測指示物15 0。 處理器140根據第一感測路線丨62與第二感測路線164計算指 201019189 示物150所在之位置。 ' 然而’習知之觸控螢幕系統100必須具有兩個光感測器 120與130’所以，習知之觸控螢幕系統1〇〇的生產成本較高。 【發明内容】 本發明提供一種感測糸統’其生產成本較低。 本發明提出一種感測系統，適於感測一指示物並計算指示 物之位置。感測系統包括一面板、一反射元件、一影像感測器 (image sensor)與一處理器。面板具有一第一平面（plane)、 一位於第一平面之第一區域（area)與一位於第一平面之第三 ❹ 區域。第三區域位於第一區域内。第一區域的形狀為四邊形而 具有依序連接之一第一邊、一第二邊、一第三邊與一第四邊。 第三區域的形狀為四邊形，且第三區域的面積（叫助阳 measure)小於第一區域的面積。 反射元件配置於第一邊且位於第一平面上。反射元件之一 第二平面實質上垂直第一平面，且第二平面為一鏡面反射面 (reflective mirrorplane)。第二平面映照（mirr〇r)第—區域 以形成-第二區域，且第二平面映照第三區域以形成—第四區 域。影像感測器配置於第三邊與第四邊所相交之一角落且位於 第-平面上。影像制ϋ之感測範圍涵蓋第三區域與第四區 域。經過影像感測器、垂直第二平面且位於第—平面上的一炉 想線（imaginary Une )位於第三區域與第四區域之外^ 電性連接影像感測器。 益 绝一^日不物鄰近第二區域，且指示物相對於反射元件形成- image) ’使得指示物與第—鏡像位於 之感測範圍内時，影像感測器麵指示物 像 且處理器計算指示物所在之位置。 兄1冢 201019189 在本發明之-實施例中，上述之影像感測器沿著—第 測路線感郝讀肖沿著—第二_路線賴第—鏡像， 理器根據第-感測路、線與第二感測路線計算指示物所在之位 置。 在本發明之-實施例中，上述之第一區域的形狀為矩形。 此外，第三區域的形狀可為矩形’且第三區域的四邊的 -平行或重合第-區域之第三邊。另外，第三區域的中讀 -區域的中心、重合’或者第三區域的這些邊的其中之二分別201019189 ' VI. Description of the Invention: - Technical Field of the Invention The present invention relates to a sensing system, and more particularly to a sensing system having a reflective element. [Prior Art] A touch system has been disclosed in a number of related patents, such as U.S. Patent Nos. 4/782,328 and 6,803,906. The touch systems disclosed in the above two patents each require at least two sensors ’ so that the touch system disclosed in each of the above patents has a higher cost of production. The following will be explained in one of the above two patents. Please refer to FIG. 1 , which illustrates a schematic diagram of a conventional touch screen system. The touch screen system 100 disclosed in U.S. Patent No. 4,782,328 includes a panel (panei) no, a first photosensor 120, and a second photosensor 130. A processor 140. The panel 110 has a touch screen 〇 area 112 ′ which has a rectangular shape. The first photo sensor 120 and the second photo sensor 130 are disposed at opposite ends of one of the boundary 112a of the touch screen area 112, and the sensing range of the first photo sensor 120 is The sensing range of the second photo sensor 130 covers the touch screen area 112, respectively. In addition, the first photo sensor 120 and the second photo sensor 13 are electrically connected to the processor 140. When a pointer 150 touches the touch screen area 112, the first photo sensor 120 and the second photo sensor 130 respectively follow a first sensing path 162 and a first The second sensing route 164 senses the indicator 150. The processor 140 calculates the position of the finger 15019 according to the first sensing route 62 and the second sensing route 164. However, the conventional touch screen system 100 must have two photo sensors 120 and 130'. Therefore, the conventional touch screen system 1 has a high production cost. SUMMARY OF THE INVENTION The present invention provides a sensing system that has a low production cost. The present invention provides a sensing system adapted to sense an indicator and calculate the position of the indicator. The sensing system includes a panel, a reflective component, an image sensor and a processor. The panel has a first plane, a first area located in the first plane, and a third area located in the first plane. The third area is located in the first area. The first area has a quadrangular shape and has a first side, a second side, a third side and a fourth side connected in sequence. The shape of the third region is a quadrangle, and the area of the third region (called the positive measure) is smaller than the area of the first region. The reflective element is disposed on the first side and on the first plane. One of the reflective elements has a second plane that is substantially perpendicular to the first plane and a second plane that is a reflective mirror plane. The second plane maps (mirr〇r) the first region to form a second region, and the second plane reflects the third region to form a fourth region. The image sensor is disposed at a corner intersecting the third side and the fourth side and is located on the first plane. The sensing range of the image system covers the third area and the fourth area. An imaginary Une passing through the image sensor, the second plane perpendicular to the first plane and located on the first plane is located outside the third area and the fourth area, and is electrically connected to the image sensor. The image sensor surface indicator image and the processor are formed when the indicator and the first image are within the sensing range of the detector. Calculate the location of the indicator. In the embodiment of the present invention, the image sensor described above is along the path of the first measurement path along the second line of the image, according to the first sense path, The line and the second sensing route calculate the location of the indicator. In an embodiment of the invention, the first region is rectangular in shape. Further, the shape of the third region may be a rectangle ' and the four sides of the third region - parallel or coincide with the third side of the first region. In addition, the center of the third region, the center of the region, the coincidence or the two of the sides of the third region are respectively
合第-區域之第三邊與第二邊。再者，第三區域的形狀 矩形之四邊形。 在本發明之-實施例中，上述之處理器具有第： 邊所相距之-第-距離「D1」的資訊，並且處理器計算指: 物所在之位置包括下列步驟。首先，確定第一感測路線與第三 的ϊ 一二度(angie)「Ai」。接著’確定第二感測路 線與第三邊之間的第二角度「A2」。接著，將兩倍的m除以 tanAl與tanA2之和以計算出指示物與第四邊 距離「D2丨。 乐一 ，在本發明之-實施例中，上述之感測系統更包括—第一線 性光源（linear light source)與一第二線性光源。第性光 ^己置於第二邊且位於第—平面上，且第—線性光源相對於反 射讀形H鏡像。第二線性光源配置於第三邊且』於第 ΐ平Ϊ上且第二紐総㈣於反射元件形成—第三鏡像。 第四邊相對於反射元件形成—細鏡像。反射元件、第一線性 光源、第二線性光源與第四邊環繞第一區域。反射元件、第二 鏡像、第三鏡像與第四鏡像環繞第二區域。至少 光源、至少部分第二鏡像與至少部分第三鏡像位；; 201019189 之感測範圍内。 - 在本發明之一實施例中’上述之感測系統更包括一第一光 源、一第一反射體（reflector)與一第二反射體。第一光源位 於影像感測器旁。第一反射體配置於第二邊且位於第一平面 上。第一反射體相對於反射元件形成一第二鏡像。第一反射體 具有一第一回復反射表面（retro-reflective surface )，且第一 回復反射表面適於反射第一光源所發出之光線。第二反射體配 置於第三邊且位於第一平面上。第二反射體相對於反射元件形 成一第三鏡像。第二反射體具有一第二回復反射表面，且第二 _ 回復反射表面適於反射第一光源所發出之光線。第四邊相對於 反射元件形成一第四鏡像。反射元件、第一反射體、第二反射 體與第四邊環繞第一區域。反射元件、第二鏡像、第三鏡像與 第四鏡像環繞第二區域。至少部分第一反射體、至少部分第二 鏡像與至少部分第三鏡像位於影像感測器之感測範圍内。 在本發明之一實施例中，上述之第一光源適於發出不可見 光’影像感測器具有一影像感測視窗（image-sensing window ) 與一濾波器（filter)，濾波器配置於影像感測視窗之前，且濾 ❹ 波器過濾不可見光之外的其他光線使得不可見光通過濾波 器。此外’第一光源為紅外光發光二極體（infrared light emitting diode，IR LED ) ’且遽波器為紅外光通濾波器（iR_pass filter )。 在本發明之一實施例中，上述之感測系統更包括一第一光 源’其配置於第一平面上方（above)且位於第三區域外。第 —光源相對於反射元件形成一第二鏡像。第一光源與第二鏡像 位於衫像感測器之感測fe圍之外。指示物具有一反光表面 (reflective surface)。第一光源適於發出不可見光（invisible light)，且第一截像藉由第一光源照射指示物之反光表面而形 201019189 成。 在本發明之一實施例中，上述之指示物具有一發光裝置。 第一鏡像藉由發光裝置所發出之光線而形成。 藉由反射元件與影像感測器的配置，本發明之實施例之感 測系統的處理器得以計舁指示物所在之位置。因此，與習知技 術相較，本實施例之感測系統可採用一個影像感測器，使得本 實施例之感測系統的生產成本較低。 為讓本發明之實施例的上述特徵和優點能更明顯易懂，下 文特舉實施例，並配合所附圖式，作詳細說明如下。 ® 【實施方式】 [第一實施例] 圖2繪示本發明第一實施例之一種感測系統的立體示意 圖，圖3繪示圖2之感測系統運作時的俯視示意圖。請參考圖 2與圖3 ’感測系統200適於感測一指示物270並計算指示物 . 270之位置（詳見下述）。感測系統200包括一面板21〇、— 反射元件220、一第一線性光源230、一第二線性光源240、 —影像感測器250與一處理器260。面板210例如為一白板 O (whiteboard)或一觸控榮幕（touch screen)，其具有一第― 平面214、一位於第一平面214的第一區域212與一位於第— 平面214之第三區域216。第三區域216位於第一區域212内。 第一區域212的形狀為四邊形，其例如為矩形，且第一區域 212具有依序連接之一第一邊212a、一第二邊212b、一第二 邊212c與一第四邊212d。第三區域216的形狀為四邊形，^ 例如為矩形，且第三區域216的面積小於第一區域212的^ 積。在本實施例中，第三區域216的四邊的其中之一平行第— 區域212之第三邊212c，且第二區域216的中心與第一區域 201019189 212的中心重合。综言之，第三區域216與第一區域212之間 • 有一間隔（Nerval) II且間隔II環繞第三區域216。 曰 反射元件220配置於第一邊212a且位於第一平面214 上。反射元件220之一第二平面222實質上垂直第一平面214, 且第二平面222為一鏡面反射面。第二平面222映照第—區域 212以形成一第一區域212’’且第二平面222映照第三區域a 以形成一第四區域216’。反射元件220例如為一平面反射鏡 (plane mirror)，但不以此為限定。第一線性光源23〇配置於 第二邊212b且位於第一平面214上’且第一線性光源23〇相 ❿ 對於反射元件220形成一第二鏡像230,。 第·一線性光源240配置於第三邊212c且位於第一平面214 上，且第二線性光源240相對於反射元件220形成一第三鏡像 240’。第四邊212d相對於反射元件220形成一第四鏡像 212d’。反射元件220、第一線性光源230、第二線性光源24〇 與第四邊212d環繞第一區域212。反射元件220、第二鏡像 230,、第三鏡像240’與第四鏡像212d，環繞第二區域212,。 影像感測器250配置於第三邊212c與第四邊212d所相交 ⑩ 之一角洛C1且位於第一平面214上，影像感測器25〇之感測 範圍涵蓋三區域216與第四區域216’。至少部分第一線性光源 230、至少部分第二鏡像230’與至少部分第三鏡像240,位於影 像感測器250之感測範圍内。在本實施例中，部分第一線性光 源230、第二鏡像230’與部分第三鏡像240’位於影像感測器 250之感測範圍内。本實施例之影像感測器250的視角（fleid angle) G1可小於90度。此外，經過影像感測器250、垂直反 射元件220之第二平面222且位於第一平面214上的一假想線 N1 (此實施例中假想線N1重合第四邊212 d與第四鏡像212 d，） 201019189 位於第三區域216與第四區域216,之外。換言之，假想線N1 ’ 不會穿過第三區域216與第四區域216,的内部。另外，處理器 260電性連接影像感測器250。 以下對於本實施例之感測系統200的運作方式作說明。圖 4繪示圖3之處理器計算指示物所在之位置的示意圖，圖5繪 示圖3之影像感測器之影像感測視窗的示意圖。請參考圖3、 圖4與圖5，當指示物270 (可參見圖2)鄰近第三區域216， 且指示物270相對於反射元件220形成一第一鏡像270，，使得 指示物270與第一鏡像270,位於影像感測器250之感測範圍内 ® 時’影像感測器250感測指示物270與第一鏡像270,，且處理 器260計算指示物270所在之位置。進言之，本實施例之影像 感測器250沿著一第一感測路線282感測指示物270與沿著一 第二感測路線284感測第一鏡像270,，且處理器260根據第一 感測路線282與第二感測路線284計算指示物270所在之位 置。 在此必須說明的是’在本實施例中，指示物270之鄰近第 一區域212的一部分是指示物270的一尖端272(可見圖2)、 ❷ 第一鏡像27〇’之鄰近第二區域212’的一部分是第一鏡像270’ 之一尖端272’。此外’由於假想線N1不會穿過第三區域216 與第四區域216’的内部’所以指示物270的尖端272、第一鏡 像270’的尖端272’與影像感測器250不會共線。 詳言之，在本實施例中，影像感測器250具有一影像感測 視窗252。當指示物270並未鄰近第一區域212時，第一線性 光源230、第一鏡像230’與第三鏡像240’所發出的光線會於影 像感測視® 252上形成亮度（brightness )較高的亮區（bright zone ) 254 ’此即為主要的感測區塊（primary sensing z〇ne )。 201019189 當指示物270鄰近第一區域212時，影像感測器25〇沿著第一 感測路線282感測指示物270，影像感測視窗252上的亮區254 會出現一第一暗紋（〇bscure une) 252a，且影像感測器250輸 出一第一電性訊號。處理器260接收上述第一電性訊號並根據 第一暗紋252a在影像感測視窗252上的位置以確定第一感測 路線282與第三邊212c之間的第一角度A1。換言之，處理器The third side and the second side of the first-area. Furthermore, the shape of the third region is a rectangular quadrilateral. In an embodiment of the invention, the processor has information of a -th distance "D1" from the side: and the processor calculates that the location of the object includes the following steps. First, determine the first sensing route and the third one (angie) "Ai". Next, 'the second angle "A2" between the second sensing line and the third side is determined. Next, the double m is divided by the sum of tanAl and tanA2 to calculate the distance between the pointer and the fourth side "D2". In the embodiment of the present invention, the above sensing system further includes - first a linear light source and a second linear light source. The first light is placed on the second side and lies on the first plane, and the first linear light source is mirrored relative to the reflective read H. The second linear light source is configured On the third side and on the second flat and the second button (four) forming a third mirror image on the reflective element. The fourth side is formed with a fine mirror image relative to the reflective element. The reflective element, the first linear light source, the second The linear light source and the fourth side surround the first area. The reflective element, the second mirror image, the third mirror image and the fourth mirror image surround the second region. At least the light source, at least part of the second mirror image and at least part of the third mirror image; In the embodiment of the invention, the sensing system further includes a first light source, a first reflector and a second reflector. The first light source is located next to the image sensor. The first reflector is arranged in the first Two sides are located on the first plane. The first reflector forms a second mirror image with respect to the reflective element. The first reflector has a first retro-reflective surface, and the first retroreflective surface is adapted to reflect Light emitted by the first light source. The second reflector is disposed on the third side and is located on the first plane. The second reflector forms a third mirror image with respect to the reflective element. The second reflector has a second retroreflective surface. And the second _ reflex surface is adapted to reflect the light emitted by the first light source. The fourth side forms a fourth image with respect to the reflective element. The reflective element, the first reflector, the second reflector and the fourth side surround the first The reflective element, the second mirror image, the third mirror image, and the fourth mirror image surround the second region. At least a portion of the first reflector, at least a portion of the second mirror image, and at least a portion of the third mirror image are located within a sensing range of the image sensor. In an embodiment of the invention, the first light source is adapted to emit an invisible light. The image sensor has an image-sensing window and a filter. (filter), the filter is disposed in front of the image sensing window, and the filter filter filters the light other than the invisible light to pass the invisible light through the filter. In addition, the first light source is an infrared light emitting diode. Diode, IR LED ) 'and the chopper is an infrared light pass filter (iR_pass filter). In an embodiment of the invention, the sensing system further includes a first light source' disposed above the first plane ( Above and located outside the third region. The first light source forms a second image with respect to the reflective element. The first light source and the second image are located outside the sensing fe of the shirt image sensor. The indicator has a reflective surface. The first light source is adapted to emit invisible light, and the first intercept is formed by the first light source illuminating the reflective surface of the indicator. In an embodiment of the invention, the indicator has a light emitting device. The first image is formed by the light emitted by the illumination device. By the configuration of the reflective element and the image sensor, the processor of the sensing system of an embodiment of the present invention can count the location of the pointer. Therefore, compared with the prior art, the sensing system of the present embodiment can employ an image sensor, so that the sensing system of the embodiment has a lower production cost. The above features and advantages of the embodiments of the present invention will become more apparent and understood. [Embodiment] [First Embodiment] Fig. 2 is a perspective view showing a sensing system according to a first embodiment of the present invention, and Fig. 3 is a top plan view showing the operation of the sensing system of Fig. 2. Referring to Figures 2 and 3, the sensing system 200 is adapted to sense an indicator 270 and calculate the position of the indicator 270 (see below). The sensing system 200 includes a panel 21, a reflective component 220, a first linear light source 230, a second linear light source 240, an image sensor 250, and a processor 260. The panel 210 is, for example, a whiteboard or a touch screen having a first plane 214, a first area 212 on the first plane 214, and a third on the first plane 214. Area 216. The third region 216 is located within the first region 212. The first region 212 has a quadrangular shape, for example, a rectangular shape, and the first region 212 has a first side 212a, a second side 212b, a second side 212c and a fourth side 212d. The shape of the third region 216 is a quadrangle, for example, a rectangle, and the area of the third region 216 is smaller than the sum of the first region 212. In the present embodiment, one of the four sides of the third region 216 is parallel to the third side 212c of the first region 212, and the center of the second region 216 coincides with the center of the first region 201019189 212. In summary, between the third region 216 and the first region 212, there is a space (Nerval) II and the space II surrounds the third region 216. The reflective element 220 is disposed on the first side 212a and on the first plane 214. One of the second planes 222 of the reflective element 220 is substantially perpendicular to the first plane 214 and the second plane 222 is a specularly reflective surface. The second plane 222 reflects the first region 212 to form a first region 212'' and the second plane 222 reflects the third region a to form a fourth region 216'. The reflective element 220 is, for example, a plane mirror, but is not limited thereto. The first linear light source 23 is disposed on the second side 212b and located on the first plane 214' and the first linear light source 23 is opposite to the reflective element 220 to form a second mirror image 230. The first linear light source 240 is disposed on the third side 212c and on the first plane 214, and the second linear light source 240 forms a third image 240' with respect to the reflective element 220. The fourth side 212d forms a fourth mirror image 212d' with respect to the reflective element 220. The reflective element 220, the first linear light source 230, the second linear light source 24A and the fourth side 212d surround the first region 212. The reflective element 220, the second image 230, the third image 240' and the fourth image 212d surround the second region 212. The image sensor 250 is disposed on the third side 212c and the fourth side 212d at an angle 10 and located on the first plane 214. The sensing range of the image sensor 25 includes the three regions 216 and the fourth region 216. '. At least a portion of the first linear light source 230, at least a portion of the second image 230', and at least a portion of the third image 240 are located within the sensing range of the image sensor 250. In this embodiment, a portion of the first linear light source 230, the second image 230', and a portion of the third image 240' are located within the sensing range of the image sensor 250. The angle of view G1 of the image sensor 250 of the present embodiment may be less than 90 degrees. In addition, an imaginary line N1 passing through the image sensor 250, the second plane 222 of the vertical reflective element 220 and located on the first plane 214 (in this embodiment, the imaginary line N1 coincides with the fourth side 212 d and the fourth mirror 212 d ,) 201019189 is located outside of the third area 216 and the fourth area 216. In other words, the imaginary line N1' does not pass through the inside of the third area 216 and the fourth area 216. In addition, the processor 260 is electrically connected to the image sensor 250. The mode of operation of the sensing system 200 of the present embodiment will be described below. 4 is a schematic diagram of the processor of FIG. 3 for calculating the position of the pointer, and FIG. 5 is a schematic diagram of the image sensing window of the image sensor of FIG. 3. Referring to FIG. 3, FIG. 4 and FIG. 5, when the indicator 270 (see FIG. 2) is adjacent to the third area 216, and the indicator 270 forms a first image 270 with respect to the reflective element 220, the indicator 270 and the indicator A mirror image 270, located within the sensing range of image sensor 250, 'image sensor 250 senses indicator 270 and first image 270, and processor 260 calculates the location of indicator 270. In other words, the image sensor 250 of the present embodiment senses the indicator 270 along a first sensing route 282 and senses the first image 270 along a second sensing route 284, and the processor 260 according to the first A sense route 282 and a second sense route 284 calculate the location of the indicator 270. It must be noted here that 'in this embodiment, a portion of the indicator 270 adjacent to the first region 212 is a tip 272 of the indicator 270 (see FIG. 2), and a second region adjacent to the first mirror 27〇' A portion of 212' is a tip 272' of the first image 270'. In addition, since the imaginary line N1 does not pass through the interior of the third region 216 and the fourth region 216', the tip 272 of the indicator 270, the tip 272' of the first mirror 270' and the image sensor 250 are not collinear . In particular, in the present embodiment, image sensor 250 has an image sensing window 252. When the indicator 270 is not adjacent to the first area 212, the light emitted by the first linear light source 230, the first mirror image 230' and the third mirror image 240' will form a brightness on the image sensing view 252. High bright zone 254 'This is the primary sensing z〇ne. 201019189 When the indicator 270 is adjacent to the first area 212, the image sensor 25 感 senses the indicator 270 along the first sensing route 282, and a bright line 254 on the image sensing window 252 exhibits a first dark line ( 〇bscure une) 252a, and the image sensor 250 outputs a first electrical signal. The processor 260 receives the first electrical signal and determines a first angle A1 between the first sensing route 282 and the third side 212c according to the position of the first dark line 252a on the image sensing window 252. In other words, the processor
Ο 26〇可藉由内建的方式而具有暗紋於影像感測視窗252上的位 置與介於感測路線與第三邊212c之間的角度的對應關係的資 訊，使得上述確定第一角度A1的工作得以執行。 同理’影像感測器250會沿著第二感測路線284感測第一 鏡像270’ ’影像感測視窗252上的亮區254會有一第二暗紋 252b，且影像感測器25〇輸出一第二電性訊號。處理器26〇接 收上述第二電性訊號並根據第二暗紋252b在影像感測視窗 M2上的位置以確定第二感測路線284與第三邊21仏之間的 第一角度A2。在此必須說明的是，第一線性光源23〇與第二 線性光源240的亮度越強，則影像感測視窗252上的第一暗紋 252a與第二暗紋252b越明顯。 々一此外，處理器260可藉由内建的方式具有第一邊212&與 第三邊212c所相距之一第一距離D1的資訊。在本實施例中， 第三邊212c是作為直角座標系（Cartesian c〇〇rdinate system) 之X轴，第四邊212d是作為直角座標系之γ軸，且角落C1 的座‘為（〇, 〇)。指示物270之X座標為指示物27〇與第四 邊U2d所相距之一第二距離D2，且指示物與第一鏡像 謂’之中點位於第一邊212&上，所以m等於⑽搞ai+d2. tanA2)/2^il此’處理器260可將兩倍的D1除以恤八丨與tanA2 之和以計算出指示物270與第四邊212d所相距之第二距離 11 201019189 D2。換言之，指示物270之座標（D2, D2.tanAl )可經由上述 ' 計算方式得以求出。在此必須說明的是，上述之指示物270在 直角座標系之座標的計算方式是用以舉例，設計者可依照設計 需求採用別種座標系統以計算指示物之座標，本發明於此不作 限定。 藉由反射元件220與影像感測器250的配置，本實施例之 感測系統200之處理器260得以計算指示物270所在之位置。 因此，與習知技術相較，本實施例之感測系統200可採用一個 影像感測器250，使得本實施例之感測系統200的生產成本較 ® 低。 [第二實施例] 圖ό纟會示本發明第二實施例之一種感測系統的俯視示意 圖。請參考圖3與圖6 ’本實施例之感測系統300與第一實施 例之感測系統200的不同之處在於，感測系統3〇〇之面板31〇 之第三區域316的這些邊的其中之二分別重合第一區域312之 第三邊312c與第二邊312b。綜言之，第三區域316與第一區 域312之間有一間隔12且間隔π為L形。 ⑩ [第三實施例] 圖7繪示本發明第三實施例之一種感測系統的俯視示意 圖。請參考圖3與圖7 ’本實施例之感測系統4〇〇與第一實施 例之感測系統200的不同之處在於，感測系統4〇〇之面板41〇 之第三區域416的形狀可為非矩形之四邊形。 [第四實施例] 圖8繪不本發明第四實施例之一種感測系統的立體示意 圖。請參考圖2與圖8 ’感測系統500與感測系統200的不同 之處在於，感測系統5〇〇省略第一線性光源23〇與第二線性光 12 201019189 源240的配置。感測系統500包括一第一光源530 ’其配置於 面板510之第一平面514上方且位於第三區域516外。第一光 源530相對於反射元件520形成第二鏡像530’。第一光源530 與第二鏡像530’位於影像感測器550之感測範圍之外。指示物 570具有一反光表面572，反光表面572的反光材料例如符合 歐規EN471之規格，但是不以此為限。 第一光源530適於發出不可見光，例如為紅外光，其波長 約為940奈米（nm)。指示物570之相對於反射元件520所 形成之第一鏡像（未繪示）藉由第一光源530照射指示物570 ❹ 之反光表面572而形成。影像感測器550可具有一濾波器 (filter) 556，其配置於影像感測視窗552之前。指示物570 可反射不可見光至渡波器556，滤波器556過遽其他光線使得 影像感測視窗552接收指示物570所反射之不可見光。此外， 影像感測器550亦可感測指示物570的第一鏡像（未繪示）。 在此必須說明的是，第三區域516可為非矩形之四邊形， 但是並未以圖面繪示。 [第五實施例] 籲圖9繪示本發明第五實施例之一種感測系統的立體示意 圖。請參考圖2與圖9，感測系統600與感測系統200的不同 之處在於’感測系統600可省略配置第一線性光源230與第二 線性光源240。指示物670具有一發光裝置672，且第一鏡像 (未繪示）藉由藉由發光裝置672所發出之光線而形成。影像 感測器650可感測指示物670及其相對於反射元件620所形成 之第一鏡像（未緣示）。 在此必須說明的是，第三區域616可為非矩形之四邊形， 但是並未以圖面緣示。 13 201019189 [第六實施例] 圖ίο繪不本發明第六實施例之一種感測系統運作時的俯 視示意圖。請參考圖3與圖1〇，感測系統7〇〇與感測系統2〇〇 的不同之處在於，感測系統700可省略配置第一線性光源23〇 與第二線性光源240。感測系統7〇〇更包括一第一光源79〇、 一第一反射體730與一第二反射體74〇。第一光源79〇位於影 像感測器750旁。第一光源790，例如為紅外光發光二極體， 適於發出不可見光，例如為紅外光。影像感測器75〇可具有一 濾波器756，例如為紅外光通濾波器，其可讓紅外光通過且配 ® 置於影像感測視窗752之前。 第一反射體730配置於面板710之第一區域712的第二邊 712b且位於面板710之第一平面714上。第一反射體730相 對於反射元件720形成第二鏡像730，。第一反射體730具有一 第一回復反射表面732，且第一回復反射表面732適於反射第 一光源790所發出之光線。亦即，第一反射體73〇的材質可為 回復反射材料（retro-reflective material)。 第二反射體740配置於面板710之第一區域712的第三邊 ❹ 712c且位於面板710之第一平面714上。第二反射體740相 對於反射元件720形成第三鏡像740，。第二反射體740具有一 第二回復反射表面742，且第二回復反射表面742適於反射第 一光源790所發出之光線。亦即，第二反射體740的材質也可 為回復反射材料（retro-reflective material)。 面板710之第一區域712的第四邊712d相對於反射元件 720形成第四鏡像712d’。反射元件720、第一反射體730、第 二反射體740與第四邊712d環繞第一區域712。反射元件 720、第二鏡像730’、第三鏡像740,與第四鏡像712d’環繞第 201019189 二區,:12’。至少部分第一反射體73〇、至少部分第二鏡像73〇, 與至少部分第三鏡像74〇，位於影像感測器75〇之感測範圍内。 ΟThe information of the correspondence between the position on the image sensing window 252 and the angle between the sensing route and the third side 212c can be made by the built-in method, so that the first angle is determined. The work of A1 was carried out. Similarly, the image sensor 250 will sense the first image 270 ′ along the second sensing path 284. The bright area 254 on the image sensing window 252 has a second dark line 252b, and the image sensor 25〇 A second electrical signal is output. The processor 26 receives the second electrical signal and determines a first angle A2 between the second sensing path 284 and the third side 21A according to the position of the second dark line 252b on the image sensing window M2. It should be noted that the stronger the brightness of the first linear light source 23A and the second linear light source 240, the more obvious the first dark line 252a and the second dark line 252b on the image sensing window 252. In addition, the processor 260 can have information of the first side 212 & the first distance D1 from the third side 212c by a built-in method. In the present embodiment, the third side 212c is the X-axis of the Cartesian crested system, the fourth side 212d is the γ-axis of the Cartesian coordinate system, and the seat ' of the corner C1 is (〇, 〇). The X coordinate of the indicator 270 is a second distance D2 between the pointer 27 〇 and the fourth side U2d, and the pointer and the first image are located at the first side 212 & the m is equal to (10) Ai+d2. tanA2)/2^il This processor 260 can divide twice the D1 by the sum of the shirt and tanA2 to calculate the second distance between the indicator 270 and the fourth side 212d. 11 201019189 D2 . In other words, the coordinates (D2, D2.tanAl) of the indicator 270 can be found by the above calculation method. It should be noted that the calculation of the coordinates of the above-mentioned indicator 270 in the rectangular coordinate system is for example. The designer can use other coordinate systems to calculate the coordinates of the indicator according to the design requirements, which is not limited herein. By the configuration of the reflective element 220 and the image sensor 250, the processor 260 of the sensing system 200 of the present embodiment can calculate the position of the pointer 270. Therefore, the sensing system 200 of the present embodiment can employ an image sensor 250 such that the manufacturing cost of the sensing system 200 of the present embodiment is lower than that of the ®. [Second Embodiment] Fig. 1 is a plan view showing a sensing system of a second embodiment of the present invention. Please refer to FIG. 3 and FIG. 6 'The sensing system 300 of the present embodiment is different from the sensing system 200 of the first embodiment in that the sides of the third region 316 of the panel 31 of the sensing system 3 are Two of them overlap the third side 312c and the second side 312b of the first area 312, respectively. In summary, there is a space 12 between the third region 316 and the first region 312 and the spacing π is L-shaped. [Third Embodiment] Fig. 7 is a plan view showing a sensing system of a third embodiment of the present invention. Please refer to FIG. 3 and FIG. 7 'The sensing system 4 of the present embodiment is different from the sensing system 200 of the first embodiment in that the third area 416 of the panel 41 of the sensing system 4 is The shape can be a non-rectangular quadrilateral. [Fourth Embodiment] Fig. 8 is a perspective view showing a sensing system which is not a fourth embodiment of the present invention. Referring to FIG. 2 and FIG. 8 'the sensing system 500 is different from the sensing system 200 in that the sensing system 5 omits the configuration of the first linear light source 23 〇 and the second linear light 12 201019 189 source 240 . The sensing system 500 includes a first light source 530' disposed above the first plane 514 of the panel 510 and outside of the third region 516. The first light source 530 forms a second image 530' with respect to the reflective element 520. The first light source 530 and the second image 530' are located outside the sensing range of the image sensor 550. The indicator 570 has a reflective surface 572, and the reflective material of the reflective surface 572 meets, for example, the specifications of the European standard EN471, but is not limited thereto. The first source 530 is adapted to emit invisible light, such as infrared light, having a wavelength of about 940 nanometers (nm). A first image (not shown) of the indicator 570 formed relative to the reflective element 520 is formed by the first source 530 illuminating the reflective surface 572 of the indicator 570 。. The image sensor 550 can have a filter 556 disposed in front of the image sensing window 552. The indicator 570 can reflect invisible light to the wave 556, and the filter 556 can illuminate other light such that the image sensing window 552 receives the invisible light reflected by the indicator 570. In addition, the image sensor 550 can also sense a first image (not shown) of the indicator 570. It must be noted here that the third region 516 may be a non-rectangular quadrilateral, but is not shown in the drawing. [Fifth Embodiment] FIG. 9 is a perspective view showing a sensing system according to a fifth embodiment of the present invention. Referring to FIGS. 2 and 9, the sensing system 600 differs from the sensing system 200 in that the sensing system 600 can omit the configuration of the first linear light source 230 and the second linear light source 240. The indicator 670 has a light-emitting device 672, and the first image (not shown) is formed by the light emitted by the light-emitting device 672. Image sensor 650 can sense indicator 670 and its first image (not shown) formed relative to reflective element 620. It must be noted here that the third region 616 may be a non-rectangular quadrilateral, but is not shown in the figure. 13 201019189 [Sixth embodiment] Fig. 1 is a schematic plan view showing a state in which a sensing system of a sixth embodiment of the present invention is in operation. Referring to FIG. 3 and FIG. 1A, the sensing system 7A is different from the sensing system 2A in that the sensing system 700 can omit the configuration of the first linear light source 23A and the second linear light source 240. The sensing system 7 further includes a first light source 79A, a first reflector 730 and a second reflector 74A. The first light source 79 is located beside the image sensor 750. The first light source 790, for example, an infrared light emitting diode, is adapted to emit invisible light, such as infrared light. Image sensor 75A may have a filter 756, such as an infrared light pass filter, that allows infrared light to pass through and is placed in front of image sensing window 752. The first reflector 730 is disposed on the second side 712b of the first region 712 of the panel 710 and on the first plane 714 of the panel 710. The first reflector 730 forms a second mirror image 730 with respect to the reflective element 720. The first reflector 730 has a first retroreflective surface 732 and the first retroreflective surface 732 is adapted to reflect the light emitted by the first source 790. That is, the material of the first reflector 73A may be a retro-reflective material. The second reflector 740 is disposed on the third side 712c of the first region 712 of the panel 710 and on the first plane 714 of the panel 710. The second reflector 740 forms a third mirror 740 with respect to the reflective element 720. The second reflector 740 has a second retroreflective surface 742 and the second retroreflective surface 742 is adapted to reflect the light emitted by the first source 790. That is, the material of the second reflector 740 may also be a retro-reflective material. The fourth side 712d of the first region 712 of the panel 710 forms a fourth mirror image 712d' with respect to the reflective element 720. The reflective element 720, the first reflector 730, the second reflector 740 and the fourth side 712d surround the first region 712. The reflective element 720, the second image 730', the third image 740, and the fourth image 712d' surround the second zone of 201019189, 12'. At least a portion of the first reflector 73〇, at least a portion of the second mirror image 73〇, and at least a portion of the third mirror image 74〇 are located within a sensing range of the image sensor 75A. Ο
例如為紅外光發光二極體的第一光源790發出紅外光，且 第一反射體730的第一回復反射表面732與第二反射體740的 第二回復反射表面742會將紅外光反射。換言之，反射紅外光 的第:回復反射表面732與第二回復反射表面742的功用如同 第一實施例之第一線性光源23〇與第二線性光源24〇的功用， 故於此不再贅述。因此，指示物（未緣示）及其第一鏡像（未 繪示）會於影像感測器750的影像感測視窗752上分別形成第 一暗紋（未繪示）與第二暗紋（未繪示），相關欽述可 一實施例的内容，於此不再贅述。 β在此必須說明的是，第三區域716可為非矩形之四邊形， 但是並未以圖面繪示。 / 本發明之實施例之感測系統至少具有以下或其他優點。蘚 由反射兀件與影像感測器的配置，本發明之實施 : 的處理器得以計算指示物所在之位置。因此，與習 較，本實施例之感測系統可採用一個影像感測器， =目 例之感測系統的生產成本較低。 、施 雖然本發明已以實施例揭露如上，然其並非用以限κ 明’任何熟習此技藝者，在不脫離*發明之精神和範=本$ 可作些許之更動與潤飾，因此本發明之保護範:，當 請專利範®所狀者轉。 ^後附之申 【圖式簡單說明】For example, the first light source 790 of the infrared light emitting diode emits infrared light, and the first retroreflective surface 732 of the first reflector 730 and the second retroreflective surface 742 of the second reflector 740 reflect infrared light. In other words, the functions of the first reflecting light reflecting surface 732 and the second returning reflecting surface 742 reflecting the infrared light are the same as those of the first linear light source 23 〇 and the second linear light source 24 第一 of the first embodiment, and thus will not be described herein. . Therefore, the indicator (not shown) and the first image (not shown) form a first dark line (not shown) and a second dark line on the image sensing window 752 of the image sensor 750, respectively. The content of an embodiment is not described here. β must be described here, the third area 716 may be a non-rectangular quadrilateral, but is not shown in the drawing. / The sensing system of an embodiment of the invention has at least the following or other advantages.藓 By the configuration of the reflective element and the image sensor, the processor of the present invention can calculate the position of the pointer. Therefore, and in comparison, the sensing system of the present embodiment can employ an image sensor, and the sensing system of the target system has a lower production cost. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention to any skilled person, and the invention may be modified and retouched without departing from the spirit and scope of the invention. Protection Fan: When you apply for Patent Model®. ^ Attached to the application [Simplified illustration]
圖 圖 1繪示習知之一種觸控螢幕系統的示意圖。 2繪示本發明第一實施例之一種感測系統的立體示土 15 201019189 圖3繪示圖2之感測系統運作時的俯視示意圖。 圖4緣示圖3之處理器計算指示物所在之位置的示意圖。 圖5繪示圖3之影像感測器之影像感測視窗的示意圖。 圖6繪示本發明第二實施例之一種感測系統的俯視示意 圖。 圖7繪示本發明第三實施例之一種感測系統的俯視示意 圖。 圖8繪示本發明第四實施例之一種感測系統的立體示意 圖。 ❿ 圖9繪示本發明第五實施例之一種感測系統的立體示意 圖。 圖10纟會示本發明第六實施例之一種感測系統運作時的俯 視示意圖。 【主要元件符號說明】 100:觸控螢幕系統 110、210、310、410、510、710 :面板 ' 112:觸控螢幕區域 φ 112a、212a、212b、212c、212d、312b、312c、712b、712c、 712d :邊 120、130 :光感測器 140、260、：處理器 150、270、570、670 :指示物 162、164、282、284 :感測路線 200、300、400、500、600、700 :感測系統 212、212,、216、216,、312、316、416、516、616、712、 716 :區域 201019189 214、222、514、714 :平面 • 220、520、620、720 :反射元件 230、240 :線性光源 212d，、230,、240,、270,、530,、712d，、730,、740,：鏡 像 250、550、650、750 :影像感測器 252、552、752 :影像感測視窗 252a、252b :暗紋 254 :亮區 ® 272、272’ ：尖端 530、790 :光源 556、756:濾波器 572 :反光表面 672 :發光裝置 730、740 :反射體 732、742 :回復反射表面 Al、A2 :角度 ❿ C1 :角落FIG. 1 is a schematic diagram of a conventional touch screen system. 2 is a perspective view showing a sensing system of a sensing system according to a first embodiment of the present invention. 15 201019189 FIG. 3 is a schematic top view showing the operation of the sensing system of FIG. 2 . 4 is a schematic diagram of the processor of FIG. 3 calculating the position of the pointer. FIG. 5 is a schematic diagram of an image sensing window of the image sensor of FIG. 3. FIG. Figure 6 is a top plan view of a sensing system in accordance with a second embodiment of the present invention. Figure 7 is a top plan view of a sensing system in accordance with a third embodiment of the present invention. Figure 8 is a perspective view showing a sensing system of a fourth embodiment of the present invention. Figure 9 is a perspective view showing a sensing system of a fifth embodiment of the present invention. Fig. 10A is a schematic plan view showing the operation of a sensing system in accordance with a sixth embodiment of the present invention. [Main component symbol description] 100: touch screen system 110, 210, 310, 410, 510, 710: panel '112: touch screen area φ 112a, 212a, 212b, 212c, 212d, 312b, 312c, 712b, 712c 712d: sides 120, 130: light sensors 140, 260, processor 150, 270, 570, 670: indicators 162, 164, 282, 284: sensing routes 200, 300, 400, 500, 600, 700: sensing system 212, 212, 216, 216, 312, 316, 416, 516, 616, 712, 716: region 201019189 214, 222, 514, 714: plane • 220, 520, 620, 720: reflection Elements 230, 240: linear light sources 212d, 230, 240, 270, 530, 712d, 730, 740, mirrors 250, 550, 650, 750: image sensors 252, 552, 752: Image Sensing Window 252a, 252b: Dark Line 254: Bright Area® 272, 272': Tip 530, 790: Light Source 556, 756: Filter 572: Reflective Surface 672: Light Emitting Device 730, 740: Reflector 732, 742: Reverberating surface Al, A2: angle ❿ C1: corner
Dl、D2 :距離 G1 :視角 II、12 :間隔 N1 :假想線 17Dl, D2: distance G1: angle of view II, 12: interval N1: imaginary line 17