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AOC-06-32-TW 置；以及 ’而計 〜-處理電路’與触置感測器構成訊號連接關係 昇出指向件之絕對位置者。 【實施方式】 首先’請參閱第-圖所示’本發明之光學式定位輪 法’其步驟係包括有： (a )利用如雷射二極體之光源（2 〇)及散光元件 5)產生線性光束（2 〇); (b)線性光束（2 〇 )以平行於顯示幕（3 〇)表面之 方向照射，照射到如觸控筆或手指之指向件（4⑻而反射； (c )以至少兩感測方向交錯之位置感測器（$ 〇， PSD ’ Position Sensing Detect〇r)，透過成像元件（6〇)接 收照射到指向件（4 0 )之反射光，得知指向件（4 〇 )至 少兩方向之相對位置；其中’如第二圖所示，位置感測器。 0)之動作原理’乃當光束射人受光部時，在光之入射位置 上產生與光能量成比例之電荷，產生之電荷則化為光電流通 過P層（P層為全面均等電阻值之電阻層），此一光電流與電 極間之距離（電阻值）成反比例分，而分別從各電極取出； 因此’假設電極間之距離為L ’總光電流為】，被分割從電極 取出之電流為I】、Is，位置感測器之中心與光束入射位置之 距離為 X，則成立 I丨=I(L-2X)/2L 及 I2=I(L+2X)/2L，故 Ι,/ΐΗΐ^Ο/αβχ)，而只要求出從電極取出之電流比， 即可得知光束之入射位置（與光能量大小無關）；以及 (d)依據至少兩位置感測器（5 〇)對指向件（4 〇) 之感測結果，由處理電路（7Q)依幾何肋計算出指向件 -6- 1329832The AOC-06-32-TW is placed; and the 'measurement circuit' is connected to the touch sensor to form a signal connection relationship. [Embodiment] First, please refer to the 'optical positioning wheel method of the present invention' as shown in the figure - the steps include: (a) using a light source (2 〇) such as a laser diode and an astigmatism element 5) Produce a linear beam (2 〇); (b) a linear beam (2 〇) illuminates in a direction parallel to the surface of the display (3 〇), illuminating a pointing object such as a stylus or finger (4 (8) and reflecting; (c) A position sensor ($ 〇, PSD ' Position Sensing Detect〇r) staggered in at least two sensing directions receives the reflected light that is incident on the pointing member (40) through the imaging element (6〇), and learns the pointing member ( 4 〇) The relative position of at least two directions; where 'as shown in the second figure, the position sensor. 0) The principle of action 'When the beam hits the light receiving part, it produces light energy at the incident position of the light. The charge of the ratio is generated as a photocurrent passing through the P layer (the P layer is a resistive layer of a comprehensive equal resistance value), and the distance between the photocurrent and the electrode (resistance value) is inversely proportional to the respective electrodes. Take out; therefore 'assuming the distance between the electrodes is L 'total photocurrent 】, the current taken out from the electrode is I], Is, the distance between the center of the position sensor and the incident position of the beam is X, then I 丨 = I (L - 2X) / 2L and I2 = I (L + 2X)/2L, so Ι, /ΐΗΐ^Ο/αβχ), and as long as the current ratio taken from the electrode is obtained, the incident position of the beam (independent of the amount of light energy) can be known; and (d) according to at least two The position sensor (5 〇) senses the result of the pointing piece (4 〇), and the processing circuit (7Q) calculates the pointing piece based on the geometric ribs-6-1332932
AOC-06-32-TW (4 Ο )之絕對位置者。 又，本發明之光學式定位輸入裝置，係包括有： -諸如雷射二極體之光源（丄Q)，設置於—顯示幕（3 0)表面之一側； -散光元件（1 5 )，相對該光源（i 〇 )設置於顯示 幕（3 0)表面之一側’俾以於顯示幕（3 〇)表面形成線 性光束（2 0); 一指向件（40)，如觸控筆或手指； Φ 至少兩位置感測器（50)，以感測方向交錯之態樣設 置於該顯示幕（3 0)表面之側邊，另於感測路徑加設有成 像元件（6 0 )，用以感測出指向件（4 Q )至少兩方向之相 對位置；以及 一處理電路（7 Q )’與該位置感測器（5 G )構成訊 號連接關係’而計算出指向件（4 〇)之絕對位置者。 基於如是之構成，本發明之光學式定位輸入裝置，完全 無機械動作’僅間單之位置感财式，且不需複雜之訊號 | 處理電路，而建或外加於資訊電子產品齡幕，亦不受 尺寸大小之限制；是以，本發明具有構造及電路簡易之功效。 「、综上所述，本發明所揭示之技術手段，確具「新穎性」、 進步性」及可供產業利用」等發明專利要件，祈請鈞 局惠賜專利，以勵發明，無任德感。 惟’上述所揭露之圖式、說明’僅為本發明之較佳實施 例’大凡Μ此項技藝人士’依本案精神範賴作之修飾或 等效變化，仍應包括本案申請專利範圍内。 1329832The absolute position of AOC-06-32-TW (4 Ο ). Moreover, the optical positioning input device of the present invention comprises: - a light source such as a laser diode (丄Q), disposed on one side of the surface of the display screen (30); - an astigmatism element (15) Relative to the light source (i 〇) disposed on one side of the surface of the display screen (30) to form a linear beam (2 0) on the surface of the display screen (3 ;); a pointing member (40) such as a stylus Or a finger; Φ at least two position sensors (50) are disposed on the side of the surface of the display screen (30) in a state in which the sensing directions are staggered, and an imaging element (60) is additionally disposed on the sensing path. For sensing the relative position of the pointing member (4 Q ) in at least two directions; and a processing circuit (7 Q )' and the position sensor (5 G ) forming a signal connection relationship 'to calculate the pointing member (4) 〇) The absolute position. Based on the configuration, the optical positioning input device of the present invention has no mechanical action at all, and only requires a complicated position signal processing circuit, and does not require complicated signal processing circuits, but is built or added to the information electronic product age screen. It is not limited by the size; therefore, the invention has the advantages of simple structure and circuit. "In summary, the technical means disclosed in the present invention have "innovation, progress" and available for industrial use, etc., and pray for the patent to encourage the invention. German sense. It is to be understood that the above-mentioned drawings and descriptions are merely preferred embodiments of the present invention. The modifications or equivalent variations of the skilled person in the spirit of the present invention should still be included in the scope of the patent application. 1329832
AOC-06-32-TW 【圖式簡單說明】 第一圖係本發明之結構說明圖。 第二圖係位置感測器之動作原理說明圖。AOC-06-32-TW [Simple description of the drawings] The first figure is a structural explanatory diagram of the present invention. The second figure is an explanatory diagram of the action principle of the position sensor.
【主要元件符號說明】 (1〇)光源 (15)散光元件 (2 0)線性光束 (3 0 )顯示幕 (4 0 )指向件 (5 0)位置感測器 (6 0)成像元件 (7 0)處理電路[Main component symbol description] (1〇) light source (15) astigmatism component (2 0) linear beam (3 0 ) display screen (4 0 ) pointing component (50) position sensor (60) imaging component (7 0) Processing circuit
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