M379804 * V f % k . ' .五、新型說明 【新型所屬之技術領域】 本創作係關於一種光學式位置偵測裝置’特別是，關於 一種可提高偵測準確度之光學式位置偵測裝置。 【先前技術】 - 目前觸控式面板依其使用技術的不同，可區分為電阻式 - 觸控面板、電容式觸控面板、聲波式觸控面板、紅外線式觸 Φ 控面板、及光學式觸控面板等種類。 圖1係用以說明顯示習知具有光學式觸控功能之顯示裝 置100之操作原理的結構示意圖。顯示裝置100包含—顯示 面板110、一紅外線LED光源120、二個光感測器13〇及135、 一反光板140、及一處理器150。反光板14〇用以反射來自紅 外線LED光源120的紅外光，使光線可集中於顯示面板ιι〇 之上。光感測态130及135設置於面板11〇的兩個角落用 ' 以擷取面板U0上的影像。當有物體(如手指或觸控筆）出現 • 於面板丨10上時，部份紅外光將被遮斷，使得光感測器13〇 及135所接收到的光訊號產生變化。光感測器13〇及可 將各種光訊號轉換為對應的電訊號，並傳送至處理器15〇。 處理器150接收並處理來自光感測器13〇及135的電訊號， 以產生此物體所對應的位置座標。 & 然而’光線在反射過程中通常會耗損部分能量，使得整 體亮度降低’進而使得域測H 13〇及13s的感測準確度^ 低。若要提供足夠的亮度，可能f要較多的統或較高ς供 4 應電流，使得整體耗電量增加。此外，為了提高光線反射量， 反射板140通常具有厚度的限制，目前已知反射板140的最 小厚度約為3·5毫米。 因此，有必要提供一種可有效率地提高照明亮度的光學 式位置偵測裝置。 【新型内容】 鑑於先前技術所存在的問題，本創作提供了一種可降低 尺寸限制、提高準確度、且減低成本之光學式位㈣測裝置。 根據本創作之，提供了—縣學式位置偵測裝 置，用以實現觸控式面板的魏。此辟式位置侧裝置包 ，-發光模組、-導光池、—光感測模組、及—影像處理 :二:3組用以產生一光線。導光模組係沿-感測區域 之邊緣而设置1具有至少—人光面及至少 =::=模組以接收光線，出光面係面向感測區域^ 用以_應=:'二=讀=模嫩且 以傳送至影做理縣。像號騎其轉換為電訊號 本創作之其他方面，部分將在 可由說明_得知，_本創作之實H述’而部分 :各方面將可利用後附之申請專利範 :二本創作 物合而理解並達成。t 了解，前述的^^出之元件 _均僅娜例1，雜__ ^从下列詳細 【實施方式】 本創作揭露一種光學式位置偵測裝置，具有較佳的偵測-準確度及較低的製作成本。參照以下之較佳實施例之敘述並 配合圖2至圖3之圖式，本創作之目的、實施例、特徵、及 優點將更為清楚。然以下實施例中所述之裝置、元件及方法 步驟，僅用以說明本創作，並非用以限制本創作的範圍。 圖2為根據本創作之一實施例所繪示之光學式位置偵測 裝置200的結構示意圖，其包含兩個光源22〇及225、一側 光光纖240、兩個光感測元件230及235、及一影像處理模組 250。光源220及225分別設置於側光光纖240的兩端，其以 紅外線光源為較佳，例如紅外線發光二極體，然不以此為限。 側光光纖240的兩端分別為入光面260及262，用以分別接 收光源220及225所產生的光線。側光光纖240的一側面為 出光面270、272、274，其中側光光纖240可用以傳導光線 並使光線自出光面270、272、274射出。在此實施例中，側 光光纖240係沿一矩形感測區域21〇的三邊而設置，且其出 光面270、272、274係面向感測區域21〇 ,以將光線導出至 感測區域210。側光光纖240為結構為熟此技藝者所習知， 如台冷葛麗思光纖有限公司所生產之各種侧光塑膠光纖，又 例如申請號為95144725號之發明名稱為“超亮側光塑膠光 纖”的台灣發明專利申請案亦描述一種侧光光纖結構。 需注意的是，本創作並不限制光源的數量，舉例來說， 光源的數量可只有一個，鄰設於側光光纖240的其中一入光 面260或262。此外，本創作亦不限制感測區域21〇的形狀， 其一般可由側光光纖240的設置方式而定義。舉例來說，感 測區域210可為多邊形或橢圓形。較佳地，本創作之側光光 • · . 纖240的厚度係小於2毫米，然不在此限。 -繼續參考圖2，光感測元件230及235分別設置於感測 區域210的兩角落，以不同角度分別擷取對應感測區域21〇 的影像訊號。在此實施例中’光感測元件230及235係分別 5又置於光源220及225的鄰近處。在其他實施例中，光感測 元件230及235可設置在其他角落處。需注意的是，本創作 並不限制光感測元件230及235的數量及位置，其可依實際 應用所需而調整。光感測元件230及235可例如為一互補式 金屬氧化物半導體影像感測器(CM 〇 s)或一電荷耦合元件影 像感測器(CCD)。 ^ 當一物體(如手指或觸控筆)位於感測區域21〇中時，部 分自側光光纖240之出光面27〇、272、274所射出的光線將 被遮蔽而無法到達光感測元件23〇及/或235 ’使得光感測元 件230及23S可藉此獲得對應的影像訊號。影像訊號一般 光學訊號，因此光感測元件23〇及235 t將所練到的影 峨轉換為電職後再傳送至·處理餘⑽。影像 额250可根據賴_物嫌崎算出 域210中的位置。一补氺…、 ^ -把定二影像處理模組250可藉由執行 特疋//、#法而计开出物體的位置座標，此 為熟此技藝者所習知之各種方法及設計，故不ί述 理模謂可例如-微處理器或―微控湘，财在=處 本創作之光學式位置_裝置200可更包含例如為液曰 顯不器的一髿示面板(圖未示），其設置於感測區域2丨0之下。 影像處理模組250所計算出之位置座標可利用各種習知的介 面傳至顯示面板的控制模組，以在顯示面板上之相對應位^ 處做出適當的反應。 圖3為根據本創作之另一實施例所繪示之光學式位置偵 測裝置300的結構示意圖，其包含三個光源32〇、322、及32扣 二個導光板340、342、及344、兩個光感測元件330及335、 及一影像處理模組350。光感測元件33〇、335及影像處理模 組350的工作原理與圖2所示實施例相似，故不贅述。光源 320、322、及324分別鄰設於導光板34〇、342、及344的入 光面360、362、及364，而導光板340、342、及344係沿一 矩形感測區域310的三邊而設置，且其出光面37〇、372、374 係面向感測區域310，以將光線導出至感測區域3〗〇。光源 320、322、及324所產生的光線可分別自入光面36〇、362、 及364進入導光板340、342、及344。光線進入導光板34〇、 342 '及344後可藉由折射、反射、及全反射等物理現象在導 光板340、342、及344中行進並自出光面370、372、374射 出至感測區域310。 導光板340、342、及344可為各種習知的導光結構，如 一般用於液晶顯示器之背光模組中的側光型導光板❶舉例來 說，每一導光板340、342、及344可分別具有反射片380、 382、及384於相對其出光面370、372、及374之另一面上， 用以將自導光板34〇、342、及344洩漏的光線反射回去，以 增加出光面370、372、及374的出光量。此外，每一導光板 340、342、及344也可分別具有設置於其出光面37〇、奶、 及3*74的擴散片（圖未示），用以使光線可經過折射等現象而 均勻地的自出光面370、372、及374射出。 由以上實施例可知，本創作之光學式位置偵測裝置係包 含-發光模組及-域職組，其巾發光·所含之光源的 數量並不受_ ’且域測模組所含之域測元件的數量亦 可依貫際應用所需進行調整。此外’本創作之光學式位置债 測裝置使關如側光光纖或導光板所組成的導光模組來替代 傳統光學式位置_裝置所賴敝光板，可有效地提升光 線在感測區域中的亮度及均勻度。因此，光_模組可具有 較佳的感測環境’因而可取得較佳的電訊紐，進而提升精 確度。另-方面，姆於魏光學式位置_裝置所使用之 $板具有財上的聞，本_的導絲峨纖或導光板) 2 低尺寸限制’且可依應用所需做成—體成型或是 成刀離式’不但有助於組裝，且可降低製作成本。 本創:之較佳實施例而已’並非用以限定 .明專j乾圍，凡其它未脫離本創作所揭示之精神 範 圍内r成之等效改變或修傳，均應包含在下述之申請專利 【圖式簡單說明】 作之二=與本1τ明ΐ結合並構成其一部分，用以說明本創 、才〔夕二r' /且連同說明書用以解釋本創作之原理。在此所 M379804 • I _ 圖1係用以說明顯示習知具有光學式觸控功能之顯示裝 置之操作原理的結構示意圖； 圖2為根據本創作之一實施例所繪示之光學式位置偵測 裝置的結構示意圖；以及 圖3為根據本創作之另一實施例所繪示之光學式位置偵M379804 * V f % k . ' . V. New description [New technical field] This is a kind of optical position detecting device. In particular, it relates to an optical position detecting device capable of improving detection accuracy. . [Prior Art] - Currently, the touch panel can be divided into a resistive type - a touch panel, a capacitive touch panel, an acoustic touch panel, an infrared touch panel, and an optical touch, depending on the technology used. Control panel and other types. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram showing the principle of operation of a conventional display device 100 having an optical touch function. The display device 100 includes a display panel 110, an infrared LED light source 120, two photo sensors 13A and 135, a reflector 140, and a processor 150. The reflector 14 is used to reflect infrared light from the infrared LED source 120 so that the light can be concentrated on the display panel. The light sensing states 130 and 135 are disposed at two corners of the panel 11A to capture images on the panel U0. When an object (such as a finger or a stylus) appears on the panel 丨 10, part of the infrared light will be blocked, causing the optical signals received by the photo sensors 13 135 and 135 to change. The photo sensor 13 can convert various optical signals into corresponding electrical signals and transmit them to the processor 15A. The processor 150 receives and processes the electrical signals from the photosensors 13A and 135 to generate position coordinates corresponding to the object. & However, the light usually consumes part of the energy during the reflection process, causing the overall brightness to decrease, which in turn makes the sensing accuracy of the domain measurements H 13 〇 and 13 s low. To provide sufficient brightness, it may be necessary to have more system or higher current supply, so that the overall power consumption increases. Further, in order to increase the amount of light reflection, the reflecting plate 140 generally has a thickness limit, and it is known that the minimum thickness of the reflecting plate 140 is about 3.5 mm. Therefore, it is necessary to provide an optical position detecting device which can efficiently increase the brightness of illumination. [New content] In view of the problems of the prior art, the present invention provides an optical position (four) measuring device which can reduce the size limitation, improve the accuracy, and reduce the cost. According to the present invention, a county-level position detecting device is provided for implementing the touch panel. The open position side device package, the light emitting module, the light guiding pool, the light sensing module, and the image processing: two: three groups are used to generate a light. The light guiding module is disposed along the edge of the sensing region and has at least one human face and at least =::= module to receive the light, and the light emitting surface faces the sensing region ^ for _ should =: 'two = Read = mold tender and send to the shadow of the county. The other aspects of the creation of the iconic ride into the telecommunications code, some of which will be described by the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Understand and achieve. t Understand that the above-mentioned components of the ^^ are only in the case of Example 1, and the __^ is from the following detailed [Embodiment] The present invention discloses an optical position detecting device with better detection-accuracy and comparison. Low production costs. The objects, embodiments, features, and advantages of the present invention will become more apparent from the description of the preferred embodiments of the appended claims. The apparatus, components, and method steps described in the following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. 2 is a schematic structural diagram of an optical position detecting device 200 according to an embodiment of the present invention, which includes two light sources 22 and 225, one side optical fiber 240, and two light sensing elements 230 and 235. And an image processing module 250. The light sources 220 and 225 are respectively disposed at two ends of the side optical fiber 240, and the infrared light source is preferably used, for example, an infrared light emitting diode, but not limited thereto. The two ends of the side optical fiber 240 are respectively the light incident surfaces 260 and 262 for respectively receiving the light generated by the light sources 220 and 225. One side of the side optical fiber 240 is a light exiting surface 270, 272, 274, wherein the side optical fiber 240 can be used to conduct light and emit light from the light exiting surfaces 270, 272, 274. In this embodiment, the side optical fiber 240 is disposed along three sides of a rectangular sensing area 21〇, and the light emitting surfaces 270, 272, and 274 face the sensing area 21〇 to guide the light to the sensing area. 210. The side optical fiber 240 is known to those skilled in the art, such as various side-light plastic optical fibers produced by Taihang Ge Lisi Optical Fiber Co., Ltd., and the invention name is "super bright side optical plastic optical fiber", for example, the application number is 95114725. The Taiwan invention patent application also describes a side optical fiber structure. It should be noted that the present invention does not limit the number of light sources. For example, the number of light sources may be only one, adjacent to one of the light incident surfaces 260 or 262 of the side optical fiber 240. Moreover, the present creation also does not limit the shape of the sensing region 21A, which can generally be defined by the manner in which the side optical fibers 240 are disposed. For example, the sensing area 210 can be polygonal or elliptical. Preferably, the side light of the present invention is less than 2 mm, but not limited thereto. - Continuing to refer to FIG. 2, the light sensing elements 230 and 235 are respectively disposed at two corners of the sensing area 210, and respectively capture image signals corresponding to the sensing area 21A at different angles. In this embodiment, the light sensing elements 230 and 235 are respectively placed adjacent to the light sources 220 and 225. In other embodiments, light sensing elements 230 and 235 can be disposed at other corners. It should be noted that this creation does not limit the number and position of the light sensing elements 230 and 235, which can be adjusted as needed for practical applications. The light sensing elements 230 and 235 can be, for example, a complementary metal oxide semiconductor image sensor (CM 〇 s) or a charge coupled device image sensor (CCD). ^ When an object (such as a finger or a stylus) is located in the sensing area 21, the light emitted from the light exiting surfaces 27, 272, 274 of the self-side optical fiber 240 will be blocked from reaching the light sensing element. 23〇 and/or 235' enable the light sensing elements 230 and 23S to obtain corresponding image signals. The image signal is generally an optical signal, so the light sensing elements 23 〇 and 235 t convert the reconstructed image into an electrical position and then transmit it to the processing remainder (10). The image amount 250 can calculate the position in the field 210 based on the image. For example, ^ - the fixed image processing module 250 can calculate the position coordinates of the object by performing the special / /, # method, which is a method and design known to those skilled in the art. The optical position of the present invention can be included in the optical position of the present invention. The device 200 can further include a display panel such as a liquid helium display device (not shown). ), which is disposed below the sensing area 2丨0. The position coordinates calculated by the image processing module 250 can be transmitted to the control module of the display panel by various conventional interfaces to make an appropriate reaction at the corresponding position on the display panel. 3 is a schematic structural diagram of an optical position detecting device 300 according to another embodiment of the present invention, which includes three light sources 32〇, 322, and 32, and two light guide plates 340, 342, and 344. Two light sensing components 330 and 335 and an image processing module 350. The working principles of the light sensing elements 33A, 335 and the image processing module 350 are similar to those of the embodiment shown in FIG. 2, and therefore will not be described again. The light sources 320, 322, and 324 are respectively disposed adjacent to the light incident surfaces 360, 362, and 364 of the light guide plates 34, 342, and 344, and the light guide plates 340, 342, and 344 are adjacent to the three rectangular sensing regions 310. It is disposed on the side, and its light-emitting surfaces 37〇, 372, and 374 face the sensing area 310 to guide the light to the sensing area 3〇. The light generated by the light sources 320, 322, and 324 can enter the light guide plates 340, 342, and 344 from the light entrance surfaces 36, 362, and 364, respectively. After entering the light guide plates 34, 342' and 344, the light can travel through the light guide plates 340, 342, and 344 by physical phenomena such as refraction, reflection, and total reflection, and are emitted from the light-emitting surfaces 370, 372, and 374 to the sensing region. 310. The light guide plates 340, 342, and 344 can be various conventional light guiding structures, such as side light type light guide plates generally used in backlight modules of liquid crystal displays. For example, each of the light guide plates 340, 342, and 344 The reflective sheets 380, 382, and 384 may be respectively disposed on the other side of the light emitting surfaces 370, 372, and 374 to reflect the light leaking from the light guide plates 34, 342, and 344 back to increase the light emitting surface. The amount of light emitted by 370, 372, and 374. In addition, each of the light guide plates 340, 342, and 344 may have a diffusion sheet (not shown) disposed on the light-emitting surface 37, milk, and 3*74, respectively, for making the light uniform through refraction or the like. The self-extracting surfaces 370, 372, and 374 of the ground are emitted. It can be seen from the above embodiments that the optical position detecting device of the present invention comprises a light-emitting module and a domain group, and the number of light sources included in the towel illumination is not affected by the _ ' and the domain test module The number of domain components can also be adjusted as needed for the application. In addition, the optical position measurement device of the present invention enables the light guide module composed of a side optical fiber or a light guide plate to replace the traditional optical position device, which can effectively enhance the light in the sensing area. Brightness and uniformity. Therefore, the light_module can have a better sensing environment, so that a better telecommunication number can be obtained, thereby improving the accuracy. On the other hand, the U-Wei optical position _ device used in the $ board has a financial news, the _ guide wire 导 fiber or light guide plate) 2 low size limit 'and can be made according to the application - body molding Or the knife-distribution type not only helps assembly, but also reduces production costs. The present invention is not limited to the preferred embodiments. Any other equivalent changes or modifications that do not depart from the spirit of the present disclosure should be included in the following application. Patent [Simple Description of the Drawings] The second part = combined with this 1 τ alum and constitutes a part thereof, which is used to explain the principle of the creation of the creation and the syllabus. M379804 • I _ FIG. 1 is a schematic structural diagram for explaining the operation principle of a conventional display device having an optical touch function; FIG. 2 is an optical position detection according to an embodiment of the present invention. Schematic diagram of the measuring device; and FIG. 3 is an optical position detection according to another embodiment of the present creation
測裝置的結構示意圖。 【主要元件符號說明】 100 顯示裝置 110 顯示面板 120 紅外線LED光源 130 > 135 光感測器 140 反光板 150 處理器 200 光學式位置偵測裝置 210 感測區域 220 ' 225 光源 230 ' 235 光感測元件 240 侧光光纖 250 影像處理模組 260 ' 262 入光面 270、272、274 出光面 300 光學式位置偵測裝置 310 感測區域 320 ' 322 ' 324 光源 330 ' 335 光感測元件 340、342、344 導光板 350 影像處理模組 360 ' 362 ' 364 入光面 M379804 * V · 370、372、374 出光面 380、382、384 反射 βSchematic diagram of the measuring device. [Description of main component symbols] 100 Display device 110 Display panel 120 Infrared LED light source 130 > 135 Light sensor 140 Reflector 150 Processor 200 Optical position detecting device 210 Sensing area 220 ' 225 Light source 230 ' 235 Light sense Measuring element 240 side optical fiber 250 image processing module 260 ' 262 light incident surface 270, 272, 274 light emitting surface 300 optical position detecting device 310 sensing area 320 ' 322 ' 324 light source 330 ' 335 light sensing element 340, 342, 344 light guide plate 350 image processing module 360 ' 362 ' 364 light entrance surface M379804 * V · 370, 372, 374 light surface 380, 382, 384 reflection β