201118690 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種觸控裝置，且特別是有關於一種光學 觸控裝置及其定位方法。 【先前技術】 觸控功能已成為現今許多電子裝置必備功能之一，而觸控 裝置即為實現觸控功能所需之常見電子元件。目前觸控襞置的 種類主要包括電阻式、電容式、光學式等，電子裝置可根據不 同的觸控需求而搭配不同種類的觸控裝置。 鲁圖1為習知一種光學觸控裝置之結構示意圖。請參照圖 1 ’ I知光學觸控裝置100包括一導光模組110、一光源模組 120以及一影像偵測模組130。其中，導光模組11〇包括沿一 矩形軌跡之四個邊依次排列的反光條112a、U2b、112c、112d， 且上述矩形執跡内的區域為一感測區域114。此外，光源模組 120包括發光元件122a、122b、122c，其中發光元件122a設 置於反光條112a與反光條112b的相鄰兩端之間，發光元件 122b設置於反光條112b與反光條112c的相鄰兩端之間，而 φ 發光元件l22c設置於反光條112a與反光條112d的相鄰兩端 之間。光源模組120用以提供光線至反光條U2a、112b、112c、 112d，而反光條U2a、112b、112c、112d用以反射光源模組 120提供的光線。另外’影像偵測模組13〇包括影像偵測元件 132a、132b、132c，其中影像偵測元件132a設置於反光條112a 與反光條112b的相鄰兩端之間，影像偵測元件132b設置於反 光條112b與反光條112c的相鄰兩端之間，而影像偵測元件 132c設置於反光條112a與反光條li2d的相鄰兩端之間。 承上述’影像偵測模組130用於偵測感測區域114内是否 有觸控點（即遮光物），並計算出觸控點的位置。此光學觸控 201118690 1點觸控的功能。舉例來說，當感測區域…内 有兩侧_時，每—影像_元件⑽、132 =侦暗點。理論上’藉由這些影像偵測科上' 點可算出兩個觸控點 ⑽、膨測元件201118690 VI. Description of the Invention: [Technical Field] The present invention relates to a touch device, and more particularly to an optical touch device and a positioning method thereof. [Prior Art] Touch function has become one of the essential functions of many electronic devices today, and the touch device is a common electronic component required for implementing touch functions. At present, the types of touch devices mainly include resistive, capacitive, optical, etc., and electronic devices can be matched with different types of touch devices according to different touch requirements. Lutu 1 is a schematic structural view of an optical touch device. The optical touch device 100 includes a light guiding module 110, a light source module 120, and an image detecting module 130. The light guiding module 11A includes reflective strips 112a, U2b, 112c, and 112d arranged in sequence along four sides of a rectangular track, and the area in the rectangular trace is a sensing area 114. In addition, the light source module 120 includes light-emitting elements 122a, 122b, and 122c, wherein the light-emitting elements 122a are disposed between adjacent ends of the reflective strips 112a and the reflective strips 112b, and the light-emitting elements 122b are disposed between the reflective strips 112b and the reflective strips 112c. Between the opposite ends, the φ light-emitting element 1222 is disposed between the adjacent ends of the reflective strip 112a and the reflective strip 112d. The light source module 120 is configured to provide light to the reflective strips U2a, 112b, 112c, 112d, and the reflective strips U2a, 112b, 112c, 112d are used to reflect the light provided by the light source module 120. In addition, the image detecting module 13A includes image detecting elements 132a, 132b, and 132c. The image detecting element 132a is disposed between the adjacent ends of the reflective strip 112a and the reflective strip 112b, and the image detecting element 132b is disposed on The reflective strip 112b is disposed between adjacent ends of the reflective strip 112c, and the image detecting element 132c is disposed between adjacent ends of the reflective strip 112a and the reflective strip li2d. The image detection module 130 is configured to detect whether there is a touch point (ie, a shade) in the sensing area 114, and calculate the position of the touch point. This optical touch 201118690 1-point touch function. For example, when there are two sides in the sensing area..., each image_component (10), 132 = dark point. In theory, two touch points (10) and expansion elements can be calculated by using these points on the image detection section.
舉例來》兒，如圖2所不，當感測區域114内有兩個觸控 A、B時，影像偵測元件132a會偵測到暗點Ai、B ^ 測元件132b會偵測到暗點Α2、Β2，而影像偵測元件二上 侧到暗點A3、Β3，其中暗點Ah Α2、Α3是觸控點 的，而暗點m、Β2、Β3是觸控點Β造成的。然而，因 Α1與暗點Β1重疊，所以影像偵測元件132a只會偵測到二個 暗點。如此，在利用重心的算法來計算暗點A1與暗點bi 位置時，將會產生誤差，亦即產生所謂的重心偏移。 承上述’當利用影像偵測元件132a、132b所偵測到的睥 點A1、B1、A2、B2來计算觸控點a、B的位置時，可辑由 線L1與直線L2來算出其中一個觸控點的位置，並藉由直 L1與直線L3來算出另一個觸控點的位置。但上述之重心偏移 的問題可能會導致計算出的兩個點A，、B，的位置與實際觸押 點A、B的位置有較大的誤差。同樣地’利用影像偵^元^ 132a、132c所偵測到的暗點Α1、Bl、A3、B3來計算觸押點 A、B的位置時，亦會產生相同的問題。 ‘ 此外，當利用影像彳貞測元件132b、132c所偵測到的暗點 A2、B2、A3 ' B3來計算觸控點A、B的位置時，可利用直線 L2與直線L5來計算出其中一個觸控點的位置，並利用直線 L3與直線L4來計算出另一個觸控點的位置。然而，直線L2 201118690 與直線L5斜率過於相近，且直線L3與直線L4的斜率過於相 近，如此可能會導致計算出的兩個點A，，、B”的位置與實際觸 控點A、B的位置有較大的誤差。 不 此外，習知光學觸控裝置1〇〇存在一定的盲區 zone)。此處的盲區是指影像偵測模組13〇的影像偵測元件 132b、132c無法偵測到觸控點所造成的暗點，從而無法 出觸控點之位置的區域。舉例來說，如圖3所示，影像 件132b的視野（fleld〇fview，F〇v)涵蓋反光條m⑽，For example, as shown in FIG. 2, when there are two touches A and B in the sensing area 114, the image detecting component 132a detects the dark spot Ai, and the B measuring component 132b detects the dark. Click Α2, Β2, and the image detecting component is from the upper side to the dark point A3, Β3, wherein the dark points Ah Α 2, Α 3 are touch points, and the dark points m, Β 2, Β 3 are caused by the touch points. However, since Α1 overlaps with the dark spot Β1, the image detecting element 132a detects only two dark spots. Thus, when the algorithm of the center of gravity is used to calculate the positions of the dark point A1 and the dark point bi, an error will occur, that is, a so-called center of gravity shift occurs. When the positions of the touch points a and B are calculated by using the defects A1, B1, A2, and B2 detected by the image detecting elements 132a and 132b, the line L1 and the line L2 can be calculated to calculate one of them. The position of the touch point, and the position of the other touch point is calculated by the straight L1 and the straight line L3. However, the above-mentioned problem of the center of gravity shift may cause a large error between the calculated positions of the two points A, B, and the positions of the actual touch points A and B. Similarly, when the dark spots B 1, B1, A3, and B3 detected by the image detecting elements 132a and 132c are used to calculate the positions of the touch points A and B, the same problem occurs. In addition, when the positions of the touch points A and B are calculated using the dark spots A2, B2, and A3 'B3 detected by the image sensing elements 132b and 132c, the straight line L2 and the straight line L5 can be used to calculate the position. The position of one touch point, and the position of the other touch point is calculated by using the straight line L3 and the straight line L4. However, the straight line L2 201118690 is too close to the straight line L5, and the slope of the straight line L3 and the straight line L4 is too close, which may result in the calculated position of the two points A,, B" and the actual touch points A, B. There is a large error in the position. In addition, the conventional optical touch device 1 has a certain blind zone. The blind spot here means that the image detecting components 132b and 132c of the image detecting module 13 cannot detect. To the dark spot caused by the touch point, the area where the touch point is located cannot be obtained. For example, as shown in FIG. 3, the field of view of the image member 132b (fleld〇fview, F〇v) covers the reflective strip m(10),
但反光條112 a與反絲i丨2 d之間存有間隙以設置影像債測元 件mc。由於影像制元件132c無法反射光線，料影像侈 測兀件132b無法偵測到在區域150⑽觸控點C，所以區域 150即為所谓的盲區。此外，當觸控點〇剛好部分位於區域 15〇内時，影像價測$ 13〇b將無法精確地债測到的觸控^ 所造成的暗點’如此亦將無法精確地計算出雛點㈣位置。 另外’影像偵測元件132c在偵測時亦有類似的f 【發明内容】 喂 本發明提供—種光學觸控裝置，以精確 置’並有效賴盲區之問題。 輕點的位 算觸—種絲職裝置之定㈣法，叫確地計 异觸控點的位置，並有效解決盲區之問題。 為達上述優點，本發明提出一種光學觸控裝置，1 二光源模組、第-影像偵測元件、-第二影像偵測元件二 -第二影像_元件以及一鏡面元件。框 第二壁以及一第四壁。第一壁與第三壁相 ’框體所圍的區域為一感測區域。光源模組用 捉供九線至感測區域。第一影像偵測元件設置於第_壁與第 201118690 二壁的相鄰兩端之間，且視野涵蓋第三壁與第四壁。第二影像 偵測元件設置於第二壁與第三壁的相鄰兩端之間，且視野涵蓋 第一壁與第四壁。第三影像偵測元件設置於第一壁與第四壁的 相鄰兩端之間，且視野涵蓋第二壁與第三壁。鏡面元件設置於 第四壁。其中，鏡面元件適於使位於感測區域内之一觸控點形 成一虛像，而第一影像偵測元件與第二影像偵測元件適於偵測 觸控點及虛像之光學資訊。 在本發明之一實施例中，上述之光源模組包括一第一發光However, there is a gap between the reflective strip 112a and the counter wire i丨2d to set the image debt measuring element mc. Since the image forming element 132c is unable to reflect light, the material image detecting element 132b cannot detect the touch point C in the area 150 (10), so the area 150 is a so-called blind spot. In addition, when the touch point is located in the area 15〇, the image price of $13〇b will not accurately detect the dark point caused by the touch^, so it will not be able to accurately calculate the point. (4) Location. In addition, the image detecting component 132c has a similar f when detected. [Invention] The present invention provides an optical touch device for accurately placing and effectively solving the problem of blind spots. The light point of the touch - the setting of the silk device (4) method, is to accurately determine the location of the touch point, and effectively solve the problem of the blind spot. To achieve the above advantages, the present invention provides an optical touch device, a second light source module, a first image detecting component, a second image detecting component 2 - a second image sensor component, and a mirror component. Frame Second wall and a fourth wall. The area surrounded by the first wall and the third wall is a sensing area. The light source module captures the nine lines to the sensing area. The first image detecting element is disposed between the first wall and the adjacent ends of the second wall of the 201118690, and the field of view covers the third wall and the fourth wall. The second image detecting element is disposed between the adjacent ends of the second wall and the third wall, and the field of view covers the first wall and the fourth wall. The third image detecting element is disposed between adjacent ends of the first wall and the fourth wall, and the field of view covers the second wall and the third wall. The mirror element is disposed on the fourth wall. The mirror component is adapted to form a virtual image in one of the sensing regions, and the first image detecting component and the second image detecting component are adapted to detect optical information of the touch point and the virtual image. In an embodiment of the invention, the light source module includes a first light emitting
元件、一第二發光元件以及一第三發光元件。第一發光元件設 置於第一壁與第二壁的相鄰兩端之間。第二發光元件設置於第 二壁與第三壁的相鄰兩端之間。第三發光元件設置於第一璧與 第四壁的相鄰兩端之間。 在本發明之一實施例中，上述之光學觸控裝置更包括一第 一導光元件、一第二導光元件以及一第三導光元件。其中，第 =導光元件設置於第-壁，第二導光元件設置於第三壁，而第 二導光元件設置於第三壁。 在本發明之-實施例中，上述之第一導光元件、第二導光 疋件與第三導光元件分別為—反光條，第—發光元件、第二發 =件與第三發光元件朝向感酿域發光，而第—導光元件、 第^光元件與第三導光元件用於將傳遞至第—導光元件、第 -導件與第三導光元件的光線反射域測區域。 域的 第 开株ii發明之-實施例巾，上述之第—導光元件、第二導光 凡倾第三導光元件分別為—導光條，且分職有面向感測區 二出光面以及與*光面相鄰的—人光面，第-發光元件、 糸-杜件與第三發光元件分別朝向第—導光元件、第二導 疋與第三導光元件的入光面發光，且光線係由第-導光元 201118690 ^域第二導光元件與第三導光元件的㈣面出射而傳遞至感測 元件ίΐ制之—實_巾，上述之第―發光元件、第二發光 j二發光兀件分別為發光二極體（lightemittingdi〇de)。 旦Μ象福、目f發明之一實施例中，上述之第一影像偵測元件、第二 ===?第三景彡像制元❹社括叫貞測單元與電 連接至偵測早元之一數位訊號處理單元。 在本發明之一實施例中，上述之光學觸控裝置更包括一其 二ΐΓΐ體、光源模組、第一影像偵測元件、第二影像偵測 兀件以及第三影像偵測元件設置於基板。 為達上述優點，本發明另提出一種光學觸控裝置之定位方 法，其適用於上述之光學觸控裝置。此光學觸控裝置之定位方 法包括：藉由鏡面元件使位於感測區域的一觸控點形成一虛 像用第-f嫌彳貞測元件、帛二影像彳貞測元件以及第三影像 偵’則元件偵測觸控點造成之暗點的位置，以得到一第一光學資 並利用第—影像偵測元件以及第二影像偵測元件债測虛& =成之暗點的位置以得到一第二光學資訊；以及根據第一光學 貪訊以及第二光學資訊判斷位於感測區域内的觸控點之位置。 本發明之光學觸控裝置及其定位方法中，由於導光模組的 鏡面7L件能產生虛像資訊，所以第一影像偵測元件以及第二影 像偵測元件可以偵測到較多有效且可用的光學資訊，從而能精 確地計算觸控點位置，並有效避免盲區之問題。 為讓本發明之上述和其他目的、特徵和優點能更明顯易 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4為本發明一實施例之光學觸控裝置的結構示意圖。請 201118690 參照圖4，本實施例之 光源模組220、一第―旦二觸控裝置200包括一框體21〇、-件234、-第：与傻福=偵測疋件232、一第二影像價測元 實施例中，框體2ω例 ^件218。在本 一第二壁202、一第三辟⑽科框體其包括一第一壁2〇!、 與第三壁203相對，一第土二壁^及盘一第四壁綱。第一壁加 210第-壁2〇卜第-壁2〇2 /、弟四壁204相對，而框體 的區域為-域一2f92^紅壁加及第四壁2(Η所圍An element, a second illuminating element, and a third illuminating element. The first illuminating element is disposed between adjacent ends of the first wall and the second wall. The second light emitting element is disposed between adjacent ends of the second wall and the third wall. The third light emitting element is disposed between adjacent ends of the first and fourth walls. In an embodiment of the invention, the optical touch device further includes a first light guiding element, a second light guiding element and a third light guiding element. Wherein, the = light guiding element is disposed on the first wall, the second light guiding element is disposed on the third wall, and the second light guiding element is disposed on the third wall. In the embodiment of the present invention, the first light guiding element, the second light guiding element and the third light guiding element are respectively - a reflective strip, a first light emitting element, a second hair emitting part and a third light emitting element Light-emitting toward the sensational field, and the first light-guiding element, the second light-emitting element, and the third light-guiding element are used to reflect the light-reflecting area of the light-transmitting element, the first- and third-light-conducting elements . In the first embodiment of the invention, the first light guiding element and the second light guiding third light guiding element are respectively - light guiding strips, and the divided surfaces are facing the sensing area And a human light surface adjacent to the *glossy surface, the first light-emitting element, the 糸-du piece, and the third light-emitting element respectively illuminating toward the light-into-light surface of the first light guiding element, the second guiding light, and the third light guiding element And the light is transmitted from the (four) plane of the second light guiding element and the third light guiding element by the first light guiding element 201118690, and is transmitted to the sensing element, the first light emitting element, the first light emitting element The two illuminating elements are respectively light emitting diodes (light emitting diodes). In one embodiment of the invention, the first image detecting component, the second===?, the third scene, the image detecting unit, and the detecting unit are electrically connected to the detecting early. One-digit digital signal processing unit. In an embodiment of the present invention, the optical touch device further includes a second body, a light source module, a first image detecting component, a second image detecting component, and a third image detecting component disposed on the optical touch device. Substrate. In order to achieve the above advantages, the present invention further provides a positioning method of an optical touch device, which is suitable for the above optical touch device. The positioning method of the optical touch device includes: forming, by the mirror component, a touch point located in the sensing area to form a virtual image using the first-th detecting component, the second image detecting component, and the third image detecting The component detects the position of the dark point caused by the touch point to obtain a first optical resource and uses the first image detecting component and the second image detecting component to measure the position of the dark point of the virtual image and the image is obtained. a second optical information; and determining a position of the touch point located in the sensing area according to the first optical greed and the second optical information. In the optical touch device and the positioning method thereof, since the mirror surface 7L of the light guiding module can generate virtual image information, the first image detecting component and the second image detecting component can detect more effective and available. Optical information, so that the location of the touch point can be accurately calculated and the problem of blind spots can be effectively avoided. The above and other objects, features and advantages of the present invention will become more <RTIgt; Embodiments FIG. 4 is a schematic structural view of an optical touch device according to an embodiment of the present invention. Referring to FIG. 4, the light source module 220 and the second-and-two-touch device 200 of the embodiment include a frame 21〇, a piece 234, a first: and a stupid=detection element 232, a first In the embodiment of the second image price measuring element, the frame 2ω is a piece 218. In the second wall 202 and the third frame (10), the frame body comprises a first wall 2 〇!, opposite to the third wall 203, a first earth wall 2 and a disk 4 wall. The first wall plus 210 first wall 2 〇 第 - wall 2 〇 2 /, the fourth wall 204 is opposite, and the area of the frame is - domain - 2f92 ^ red wall plus the fourth wall 2
而分杜加件又置於框體210之第四壁綱，且鏡 像，而第該感測區軸之—雜點形成一虛 二元件232、第二影像輸牛234以及第 應:像之光用以偵測位於感測區域219之觸控點及對 在本實關中，光學觸控裝置2〇〇更可包括一基板（圖未 不），而框體210、光源模、组22〇、第一影像偵測元件、第二 影像偵測元件⑽第三影像_元件可設置於基板上。 此外，在本實施例中，光學觸控裝置2〇〇更可包括一第一 導光讀212、-第二導光元件2M、—第三導光元件216。 第一導光元件212、第二導光元件214與第三導光元件216分 別設置於框體210之第一壁201、第二壁202、第三壁2〇3。 第一導光元件212、第二導光元件214與第三導光元件216例 如分別為一反光條，其用於將傳遞至第一導光元件212、第二 導光元件214與第三導光元件216的光線反射至感測區域219。 上述之光源模組220包括一第一發光元件222、一第二發 光元件224以及一第三發光元件226。第一發光元件222、第 一發光元件224與第二發光元件226例如分別為一發光二極 201118690 體，但不以此為限。本實 置於框體2H)之第m元件222例如是設 第一導光元件212m; I 咐目鄰兩端之間（即 224 #：r〇r:f}：： 的二=:間(即第二導光元件214舆—第^ H 第一發光兀件226例如是設置於框體210 ^一壁201與第第四壁綱的相鄰兩端之間（即第一導光元 與Ϊ面元件218的相鄰兩端之間）。在本實施例中，第 :==二發光元件214與第三發光元件-朝向 a上述第一影像偵測元件232設置於框體210之第一壁201 與第二壁202的相鄰兩端之間（即第一導光元件212與第二導 光讀214的相鄰_之間），且第一影像制元件232的視 好’函蓋框體210之第三壁203與第四壁204 (即第三導光元件 216與鏡面元件218)。第二影像彳貞測元件234設置於框體21〇 之第二壁202與第三壁203的相鄰兩端之間（即第二導光元件 214與第二導光元件216的相鄰兩端之間），且第二影像偵測 元件234的視野涵蓋框體210之第一壁201與第四壁2〇4 (即 第一導光元件212與鏡面元件218)。第三影像偵測元件236 設置於框體210之第一壁201與第第四壁204的相鄰兩端之間 (即第一導光元件212與鏡面元件218的相鄰兩端之間），且 第三影像偵測元件236的視野涵蓋框體210之第二壁2〇2與第 三壁203 (即篥二導光元件214與第三導光元件216)。 更詳細地說’第一壁201與第二壁202的相鄰兩端之間例 如設有開口，以供設置第一發光元件222及第一影像摘測元件 232。第二壁202與第三壁203的相鄰兩端之間例如設有開口， 201118690 以供设置第二發先元件224與第二影像憤測元件234。第一壁 201與第四壁204的相鄰兩端之間例如設有開口，以供設置第 三發光元件226與第三影像偵測元件236。 此外’第一影像偵测元件232、第二影像偵測元件234以 及第三影像偵測元件236分別包括一偵測單元237與電性連接 至偵測單元237之一數位訊號處理單元238。上述之第一影像 偵測兀件232、第二影像偵測元件234與第三影像偵測元件236 的視野即為偵測單元237的視野。此外，數位訊號處理單元The sub-dual component is placed on the fourth wall of the frame 210 and mirrored, and the first of the sensing area axes forms a virtual two component 232, a second imagery 234, and a photo: The light is used to detect the touch point located in the sensing area 219, and in the actual touch, the optical touch device 2 can further include a substrate (not shown), and the frame 210, the light source module, and the group 22〇 The first image detecting component and the second image detecting component (10) may be disposed on the substrate. In addition, in this embodiment, the optical touch device 2 can further include a first light guiding read 212, a second light guiding element 2M, and a third light guiding element 216. The first light guiding element 212, the second light guiding element 214 and the third light guiding element 216 are respectively disposed on the first wall 201, the second wall 202, and the third wall 2〇3 of the frame 210. The first light guiding element 212, the second light guiding element 214 and the third light guiding element 216 are respectively, for example, a reflective strip for transmitting to the first light guiding element 212, the second light guiding element 214 and the third guiding Light from the light element 216 is reflected to the sensing region 219. The light source module 220 includes a first light emitting element 222, a second light emitting element 224, and a third light emitting element 226. The first light-emitting element 222, the first light-emitting element 224, and the second light-emitting element 226 are respectively a light-emitting diode 201118690 body, but not limited thereto. The mth element 222 that is actually placed in the frame 2H) is, for example, provided with the first light guiding element 212m; I 之间 between the two ends (ie, 224 #:r〇r:f}:: two =: That is, the second light guiding element 214—the first light emitting element 226 is disposed between the adjacent ends of the frame 210 and the fourth wall and the fourth wall (ie, the first light guide and In the present embodiment, the first:==two-light-emitting elements 214 and the third light-emitting elements-toward a first image detecting element 232 disposed on the frame 210 Between one wall 201 and the adjacent ends of the second wall 202 (ie, between the adjacent first light guiding element 212 and the second light guiding read 214), and the first image forming element 232 is a good one. The third wall 203 and the fourth wall 204 of the cover frame 210 (ie, the third light guiding element 216 and the mirror element 218). The second image sensing element 234 is disposed on the second wall 202 and the third side of the frame 21 Between adjacent ends of the wall 203 (ie, between the adjacent ends of the second light guiding element 214 and the second light guiding element 216), and the field of view of the second image detecting element 234 covers the first of the frame 210 Wall 201 and fourth wall 2〇4 (ie a light guiding element 212 and a mirror element 218). The third image detecting element 236 is disposed between the adjacent ends of the first wall 201 and the fourth wall 204 of the frame 210 (ie, the first light guiding element 212 and Between the two adjacent ends of the mirror element 218, and the field of view of the third image detecting element 236 covers the second wall 2〇2 and the third wall 203 of the frame 210 (ie, the second light guiding element 214 and the third guiding Light element 216). In more detail, an opening is provided between adjacent ends of the first wall 201 and the second wall 202 for providing the first light-emitting element 222 and the first image-sampling element 232. An opening, for example, is provided between the wall 202 and the adjacent ends of the third wall 203, 201118690 for providing the second first element 224 and the second image inversion element 234. The first wall 201 is adjacent to the fourth wall 204. An opening is provided between the two ends for providing the third light-emitting element 226 and the third image detecting element 236. Further, the first image detecting component 232, the second image detecting component 234, and the third image detecting component The 236 includes a detecting unit 237 and a digital signal processing unit 238 electrically connected to the detecting unit 237. The first image detecting Wu member 232, a second image detecting element 234 and the third image field of view of the detecting element 236 is the field of view detection unit 237. In addition, the digital signal processing unit
238用以處理對應之偵測單元237的偵測訊號，並將偵測訊號 ，遞至中央處理單元（圖未示），以藉由此中央處理單元計 异出觸控點的位置。上述之偵測訊號例如是偵測單元237所偵 測到之暗點的位置。 下文將具體描述適用於上述之光學觸控裝置200之光學 ^控裝置的《位方法，並將配合圖式具體說明光學觸控裝置 0及其定位方法如何避免因多個觸控點所造成的暗點重疊， 導致定位不精確的問題。 ，用於上述之光學觸織置之光學觸控裝置的定位 万法包括以下步驟： 虎後^心兄面元件218使位於感測區域219的一觸控點形成 及第^用第—影像偵測元件232、第二影像侧元件234 =像偵測元# 236 _觸控點造成之暗點的位置，以: 像#測-資訊’並利用第—影像制元件232以及第二 風次、1、70 3 4 _虛像造成之暗點的位置，以制-第二 予貝矾，以及根據第一光學資訊 ' 測區,9内的觸控點之位置。…―先子貝訊判斷位的 μ參照圖5,以本實施例之光學觸控裝置2〇〇及其定位; 201118690 法定位位於感測區域219的兩個觸控點E、 ^鏡面元件训的設置，位於感測== 偵測元件Λ 彳讀232、第二影像 F 第二衫像_元件236可偵測到觸㈣Ε、 F所造成的暗點，從而得到一第一觸^一 的暗點=貞二47制到麵E1、F1所造成 係關於觸控點E、的是說’第—光學資訊 的光學資訊。 第—先學賴_於虛像仏 承上述，在其中一影像偵測元 點E37%3並^=232^貞測到之由虛像E1、F1所造成的暗 能谓測到有效可用；第一影像伽元件232雖不 二光學資訊偵測到有效可用的第 E3 . F3 ( 232 元件234或第m,:先予貝§fL)，配合第二影像偵測 E' E、F的位置 即第—光㈣訊）來精確地計算出觸控點 此外’本實施例之光學 決習知技術所提到之盲裝 及其疋位方法亦可解 測元件234為例，由於網^門4 °月參照圖6 ’以第二影像偵 盲區）内，所以第^ 位在區域250 (即習知技術的238 is configured to process the detection signal of the corresponding detection unit 237, and send the detection signal to a central processing unit (not shown) to thereby determine the position of the touch point by the central processing unit. The above detection signal is, for example, the position of the dark point detected by the detecting unit 237. The "bit method" applicable to the optical control device of the optical touch device 200 described above will be specifically described below, and the optical touch device 0 and its positioning method are specifically described in conjunction with the drawings to avoid the problem caused by multiple touch points. Dark spots overlap, causing inaccurate positioning problems. The method for positioning the optical touch device for the above optical touch weaving includes the following steps: the tiger rear face element 218 forms a touch point in the sensing area 219 and uses the first image detection The measuring element 232 and the second image side element 234 are located at the position of the dark point caused by the detecting element #236_touch point, and are: like #测-信息', and using the first image component 232 and the second wind, 1, 70 3 4 _ The position of the dark point caused by the virtual image, the system - the second pre-beat, and the position of the touch point within the measurement area according to the first optical information. ― 先 先 判断 判断 判断 判断 参照 参照 参照 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学The setting is located in the sensing == detecting component 彳 reading 232, the second image F, the second shirt image _ component 236 can detect the dark spots caused by the touch (four) Ε, F, thereby obtaining a first touch Dark point = 贞 2 47 system to face E1, F1 caused by the touch point E, is the optical information of the first - optical information. The first is to learn the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The image gamma element 232 detects the E3. F3 (the 232 element 234 or the mth, the first çf sfL), and the position of the second image detection E' E, F is the same as the optical information detected. - Light (4)) to accurately calculate the touch point. In addition, the blind mounting method and the clamping method mentioned in the optical decision technique of the present embodiment can also be used as the example of the detecting component 234, since the mesh door 4 ° The month is referred to in Figure 6 'with the second image detection blind zone', so the ^ position is in the area 250 (ie, the prior art
234 G 9,Λ ^ 置此外，因觸控點H的一 1八h + ，内，所以第二影像 。刀位在&域234 G 9, Λ ^ Set, in addition, due to the touch point H of one 18 h + , inside, so the second image. Tool position in & field
所造成的暗點的位置 ：:確債測到觸控點G 罝也扰疋况，第一影像偵測元件234不能 201118690 制到有效可用的第-光學資訊。然而，因觸控點g、h 成虛像GhHl’所以第二影像谓測元件234可偵測到虛像 m所造成的暗點G2、H2，而第一影像偵測元件2 虛像G1、m所造成的暗點G3、H3。也就是說 測元件232及第二影像侧元件234可摘測到有效可用的= 光學資訊。如此，可藉由第-影像偵測元件说所伯測到之二 點G3、H3的位置，配合第二影像偵測元件故所偵測到之二 點G2、H2的位置來精確地計算出觸控點g、h的位置 曰 村配合第—影像偵測元件232或第三影像制元件236所偵 測到之觸控點G、Η造成的暗點的位置（即第一光學資訊 算_” G、Η的位置。因此’本實施例之光學觸 二 2GG及其撞^法可有效解決f知技賴糾之 的問題。 基於上述，相較於習知光學觸控裝置1〇〇，本實施例之光 J觸控裝及狀位方法，因設有鏡面元件川以使位於 =則區域219内的觸控點能形成虛像，所以第—影像偵測元件 2二第二影像偵測元件234能債測到虛像所造成的暗點。也 ^ Γί ’第一影像債測元件232與第二影像偵測元件234可獲 于夕的光子=貝戒’以利精確計算出觸控點的位置。 ，7為本發明另一實施例之光學觸控裝置的結構示意 二π >照圖7，本實施例的光學觸控裝置2〇似與上述之光 :控農置2G0的區別在於，光學觸控震置2撕的第一導光 =212a、第二導光元件21如與第三導光元件214&分別為一 :條。，具體地’第一導光元件212a、第二導光元件21如與 '一導光το件216a分別具有面向感測區域219的一出光面32 以及與出絲32相鄰的—人光面34。在本實施例巾，第一發 201118690 光元件222、第二發光元件224與第三發光元件226係分別朝 向第一導光元件212a、第二導光元件214a與第三導光元件 216a的入光面34發光。光源模組220所發出的光線由第一導 光元件212a、第二導光元件214a與第三導光元件216a的入光 面34入射第一導光元件212a、第二導光元件214a與第三導光 元件216a，而第一導光元件212a、第二導光元件21扣與第三 導光元件216a會將光線轉換成線光源，且線光源會從出光面 32出射而傳遞至感測區域219。此光學觸控裝置2〇加的觸控 點定位方法及優點均與光學觸控裝置2〇〇相同，在此不再 • 述。 ^綜上所述，本發明之光學觸控裝置及其定位方法中，第一 衫像偵測元件與第二影像偵測元件可偵測到由鏡面元件產生 =觸控點之虛像，以獲得更多的光學資訊，如此有利於精確計 算出觸控點的位置並解決盲區的問題。 雖然本發明已以較佳實施例揭露如上，然其並非用以限定 本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍 内，當可作些許之更動與潤飾，因此本發明之保護範圍當視後 • 附之申請專利範圍所界定者為準。 【圖式簡單說明】 圖1為習知一種光學觸控裝置之結構示意圖。 圖2為圖1所示之光學觸控裝置之感測區内的兩觸控點 所造成的暗點重疊的示意圖。 圖3為圖1所示之光學觸控裝置的盲區之示意圖。 圖4為本發明一實施例之光學觸控裝置之結構示意圖。 圖5為圖4所示之光學觸控裝置之感測區内的兩觸控點 所造成的暗點重疊的示意圖。 201118690 圖6為圖4所示之光學觸控裝置如何解決習知技術之盲區 問題的示意圖。 圖7為本發明另一實施例之光學觸控裝置之結構示意圖。 【主要元件符號說明】 100 :習知光學觸控裝置 110 :導光模組 112a、112b、112c、112d :反光條 114 .感測區域 120 :光源模組 • 122a、122b、122c :發光元件 130 :影像偵測模組 132a、132b、132c :影像偵測元件 150、250 :區域 200、200a :光學觸控裝置 210 :框體 201 :第一壁 202 :第二壁 ^ 203 :第三壁 204 :第四壁 212、212a :第一導光元件 214、214a :第二導光元件 216、216a :第三導光元件 218 鏡面元件 219 感測區域 220 光源模組 222 第一發光元件 15 201118690 224 :第二發光元件 226 :第三發光元件 232 :第一影像偵測元件 234 :第二影像偵測元件 236 :第三影像偵測元件 237 :偵測單元 238 :數位訊號處理單元 32 :出光面 34 :入光面 • A、B、C、D、E、F、G、H:觸控點 A，、A”、B,、B” ：點 A卜 A2、A3、B卜 B2、B3、E2、E3、F2、F3、G2、G3 H2、H3 :暗點The position of the dark spot caused by the detection of the touch point G is also disturbed, and the first image detecting element 234 cannot make effective optical-optic information. However, since the touch points g and h are virtual images GhH1', the second image sensing component 234 can detect the dark spots G2 and H2 caused by the virtual image m, and the first image detecting element 2 is caused by the virtual images G1 and m. Dark spots G3, H3. That is to say, the measuring component 232 and the second image side component 234 can measure the effectively available = optical information. In this way, the position of the two points G3 and H3 detected by the first image detecting component can be accurately calculated by the position of the two points G2 and H2 detected by the second image detecting component. The position of the touch points g and h is matched with the position of the dark point caused by the touch point G and the 侦测 detected by the first image detecting component 232 or the third image forming component 236 (ie, the first optical information calculation _ "G, Η position. Therefore, the optical touch 2GG of this embodiment and its collision method can effectively solve the problem of the knowledge of the knowledge. Based on the above, compared with the conventional optical touch device, In the optical J touch device and the position method of the embodiment, since the mirror element is provided to enable the touch point located in the area 219 to form a virtual image, the second image detection component 2 and the second image detection The component 234 can measure the dark spot caused by the virtual image. Also, the first image debt detecting component 232 and the second image detecting component 234 can obtain the photon of the eve = the ring to facilitate accurate calculation of the touch point. The position of the optical touch device according to another embodiment of the present invention is two π > The optical touch device 2 of the embodiment is similar to the above-mentioned light: the control of the agricultural device 2G0, in that the first touch light of the optical touch is 2, the second light guide element 21, and the third light guide element 21 The elements 214 & are respectively a strip. Specifically, the first light guiding element 212a and the second light guiding element 21 have a light emitting surface 32 facing the sensing region 219 and the light emitting portion 216a, respectively. The adjacent light-light surface 34 of the wire 32. In the present embodiment, the first light-emitting element 222, the second light-emitting element 224, and the third light-emitting element 226 are directed toward the first light guiding element 212a and the second light guiding body, respectively. The light incident surface 234a and the light incident surface 34 of the third light guiding element 216a emit light. The light emitted by the light source module 220 is incident on the light incident surface of the first light guiding element 212a, the second light guiding element 214a and the third light guiding element 216a. The first light guiding element 212a, the second light guiding element 214a and the third light guiding element 216a are incident, and the first light guiding element 212a, the second light guiding element 21 and the third light guiding element 216a convert light into a line The light source and the line source are emitted from the light exit surface 32 and transmitted to the sensing area 219. The optical touch device 2 The method and the advantages of the touch point positioning are the same as those of the optical touch device, and are not described here. In summary, in the optical touch device and the positioning method thereof, the first shirt image The detecting component and the second image detecting component can detect the virtual image generated by the mirror component = touch point to obtain more optical information, which is convenient for accurately calculating the position of the touch point and solving the blind spot problem. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the patent application scope. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a conventional optical touch device. FIG. 2 is a schematic diagram showing the overlap of dark spots caused by two touch points in the sensing area of the optical touch device shown in FIG. 1. FIG. 3 is a schematic view of a blind spot of the optical touch device shown in FIG. 1. 4 is a schematic structural view of an optical touch device according to an embodiment of the invention. FIG. 5 is a schematic diagram showing the overlap of dark spots caused by two touch points in the sensing area of the optical touch device shown in FIG. 4. 201118690 FIG. 6 is a schematic diagram of how the optical touch device shown in FIG. 4 solves the blind spot problem of the prior art. FIG. 7 is a schematic structural diagram of an optical touch device according to another embodiment of the present invention. [Main component symbol description] 100: conventional optical touch device 110: light guiding module 112a, 112b, 112c, 112d: reflective strip 114. sensing area 120: light source module • 122a, 122b, 122c: light emitting element 130 Image detection modules 132a, 132b, 132c: image detecting elements 150, 250: regions 200, 200a: optical touch device 210: frame 201: first wall 202: second wall ^ 203: third wall 204 4th wall 212, 212a: first light guiding element 214, 214a: second light guiding element 216, 216a: third light guiding element 218 mirror element 219 sensing area 220 light source module 222 first light emitting element 15 201118690 224 The second light-emitting element 226: the third light-emitting element 232: the first image detecting component 234: the second image detecting component 236: the third image detecting component 237: the detecting unit 238: the digital signal processing unit 32: the light-emitting surface 34: Into the light surface • A, B, C, D, E, F, G, H: touch point A,, A”, B,, B”: point A, A2, A3, B, B2, B3, E2, E3, F2, F3, G2, G3 H2, H3: dark spots
El、F卜G卜H1 :虛像 LI、L2、L3、L4、L5 :直線El, F Bu G Bu H1: virtual image LI, L2, L3, L4, L5: straight line