31S656 五、發明説明（） A7 'B7 經濟部中央標準局員工消費合作社印製 5 — 1發明領域及背景 A. 發明領域 本發明係爲一種光學掃描器的改良裝置，尤指一種可 使燈管承載裝置與光電轉換器承載裝置呈同步異向傳動， 同時可維持光程不變的掃描裝置。 B. 發明背景 習知的光學掃描裝置爲維持光程不變，一般有兩種設 計：單一及互動式傳動。單一式傳動的設計如圖1所示，即 所有的光學組件，包括燈管1 0 3，反射鏡1 0 6，1 〇 4 , 105，光電轉換裝置108，及鏡頭107等都安排在同一個承 載器102 (carriage)中。當位置固定後，其相對的位置 並不改變，以保持其光程的穩定。在掃描時，文件101放置 於機台的上方，光學承載器102則安裝在一固定的軌道111 上，由馬達（未示於圖）轉動帶動裝置109並帶動一傳動元 件110 (如皮帶，鋼索），而使光學承載器102前後移動以 進行文件的掃描。 因爲主要的光學元件皆放置在同一個光學承載器上’ 所以此_設計的、體積大重量重，且承載器的成本高’所須 的馬達動力也較高。而且，因掃描文件須移動光學承載 器，所以整個機體難以縮小。若希望縮小光學承載器的體 積時.，則光程須縮小。然而，如果光程縮小’則鏡頭的, (請先閲讀背面之注意事項再填寫本頁} 訂 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） ^1θ65β Α7 -------；_Β7五、發明説明（） 角必須加大。相對地，影像亮度均匄度逛亦增大。因 此，就縮小機體而言，單一傳動式並非理想的設計》 另一種互動式傳動的掃描器如圖2所示。圖2爲一下視 圖，顯示其光學組件的相對位置。光學元件如燈管2 0 5及反 射鏡204固定在一燈管承載裝置202上，另外的反射鏡則安 裝在另一承載裝置201上，光電轉換裝置203固定在機體 上。當文件放置於上方欲掃描時，燈管承載裝置202便往前 移動。垠據帶動裝置減半原理當燈管承載裝置2 0 2往前移 動Υ距離時，反射鏡承載裝置20 1亦同時向前移動1/2Υ距 離，以維持光程不變。互動式傳動的掃描器比單一傳動式 的掃描器體積小。然而，爲維持光程不變，互動式傳動的 掃描器之元件的構造十分複雜，且組裝費時。另外，由於 掃描時，內部所有的反射鏡皆在移動，而反射鏡移動時的 偏光I會增大並造成影像的色偏或偏向，進而影響影像 的淸析度。 (請先閱讀背面之注意事項再填寫本頁) 、vs 經濟部中央標準局員工消费合作社印裝 5 ~ 2發明目的及槪述 基於上述之問題，本發明之主要目的在提供一種影像 愚質盈定，體積小，重量輕且結構簡單的光學掃描裝置。 本發明之另一目的在提供一種可使光程增長U改善鏡 頭-5^#^應，並提高影像品質之光學掃描裝置。 本發明之又一目的在提供一種構造簡單，組裝容易的 光學掃描裝置》 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） B7 五、發明説明（） 本發明之再一目的在提供一種可使用低動力馬達傳動 的光學掃描裝置。 > 基於上述之目的，本發明主要包含：燈管承載裝置， 複數個交射鏡，光電轉換器承載裝置及同歩異向傳動裝 奮。同步異向傳動裝置包含一閉路式迴路的傳動元件，當 馬達帶動帶動裝置時，傳動元件使燈管承載裝置及光電轉 換器承載裝置呈同步異向移動。由於傳動元件的.迴路設 計，可簡化掃描器的內部結構，並縮小體積。而且，本發 明的反射鏡爲月定式可使反射影像的品質更爲穩定。 5 — 3圖式之簡單說明 圖1爲一側面剖面圖，顯示單一傳動式掃描裝置之架 構。 圖2爲一下視圖，顯示互動傳動式掃描裝置之架構。 圖3爲一側面剖面圖，顯示本發明之最佳實施例的架 構。 圖4爲一側面剖面圖，顯示本發明之另一最佳實施例的 架構。 經濟部中央標準局員工消費合作社印裝 (請先閱讀背面之注意事項再填寫本頁) 圖5爲一側面剖面圖，顯示本發明之另一最佳實施例的 架構。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 經濟部中央橾準局員工消費合作社印製 313656 A7 __；______B7五、發明説明（） 5 ~ 4本發明之詳細說明 Μ了簡化習知之掃描器的內部結構，本發明徹底地改 良了習知之傳動元件的構造。本發明之最佳實施例顯示於 圖3。本發明主要包含：燈管承載裝置301，第二反射鏡 Γ 3 0 3、第三反射鏡3 04，光電轉換器承載裝置3 02，及同~步 異向傳動裝置3 0 5，3 0 6。 燈管承載裝置301內具有一燈管310及第一反射鏡 311，第一反射鏡311的角度剛好可將掃描的影像反射到第 二反射鏡3 03 »第二反射鏡3 03再將影像反射到第三反射鏡 3〇4。爲使光程不變，並保持影像的穩定^第二、第三反射 鏡303，304分別固定於機台上方及下方的反射角，即第一 反射鏡3 11與第二反射鏡3 03的反射角。第三反射鏡3 04所 呈的角度可恰好將影像反射到光電轉換器承載裝置3 02。光 電轉換器承載裝置3 02內具有一光電轉換裝置313，如CCD 或CIS等，及一鏡頭3 12。影像由第三反射鏡3 0 4反射到鏡 頭3 12，再由光電轉換裝置3 13攝取其影像，將之轉換爲電 子訊號。 燈管承載裝置301與光電轉換器承載裝置302分別安裝 在機台內上方及下方的支撐元件3 0 7，3 0 8上，使其可前後 滑動。支撐元件3 07，3 08可爲任何具有支撐及滑動功能的 元件，如滑動軸或滑動桿等。燈管承載裝置301及光電轉換 器承載裝置302靠一同步異向傳動裝置3 0 5，3 06使其可呈 (請先閱讀背面之注意事項再填寫本頁) 訂 蜱！ 尺度適用中國國家標準（CNS)A4規格（ 210X297公楚） 經濟部中央樣準局員工消费合作社印製 A7 B7 五、發明説明（） 同步異向移動。同步異向傳動裝置包含四個帶動裝置305， 如滑輪，及一傳動元件3 06。帶動裝置分別位於機台內部周 圍的四個角落，由馬達（未示於圖）傳動，並帶動傳動元 件306，如皮帶，鋼索等。傳動元件呈閉路式迴路環繞於四 個帶動裝置3 0 5上。馬達轉動時帶動帶動裝置3 0 5，帶動裝 置305的轉動使傳動元件306帶動燈管承載裝置30 1及光電 轉換器承載裝置3 02，使之呈同步異向移動。 掃描文件時，文件330放置於機台340的上方。馬達驅 ' 動帶動裝置305並牽動傳動元件3 06，使燈管承載裝置301 由位置A向位置B移動。此時，由於傳動元件3 06爲一閉路 式迴路，因此光電轉換器承載裝置3 02則從位置B向位置A 移動。如此，兩者的移動方式便爲同步異向。當燈管承載 裝置301與光電轉換器承載裝置3 02移動時，其光程仍然保 持不變，因爲第二反射鏡3 03與第三反射鏡3 04固定於機台 34〇內的上方及下方的反射角，且燈管承載裝置301與光電 轉換器承載裝置302的位置永遠呈同步異向移動，如此便可 確保光程在每個文件的位置上保持等距。 圖4顯示本發明的另一最佳實施例。圖4與圖3的差別僅 在傳動元件上。凡熟悉此項技藝之人士皆知道，本發明之 同步異向傳動裝置可有許多種變化，且仍能達成同樣之功 效’圖4及圖5即爲二種可能的例子。如圖4所示，同步異向 傳動裝置包含四個帶動裝置，如滑輪4051，405 2'， 本紙張尺度適用中國國家標準（CNS ) A4規格（2丨0X297公釐） 产II (請先閲讀背面之注意事項再填寫本頁) 訂 線- 313656 經濟部中央榡準局貝工消費合作杜印製 五、發明説明（） 40 5 3，4054及一傳動元件406。帶動裝置中只有第一滑輪 4051及第四滑輪4054爲主動滑輪，並受馬達（未示於圖） 驅動，其餘全爲被動滑輪。且第一滑輪4051與第四滑輪 4054不會同時受馬達驅動，當其中一滑輪爲主動滑輪時， 另一個便爲被動滑輪。第一滑輪4051與第四滑輪4 0 5 4之間 並不須要傳動元件406連接。傳動元件406由第一滑輪 405 1的一端連接第二滑輪4〇52，第三滑輪40 5 3，最後到 第四滑輪405 4。 傳動元件406的兩端可爲一裝設有彈簧的裝置，或具有 伸縮功能的裝置。當滑輪405 1受馬達驅動時，滑輪405 1作 逆時針方向轉動，使傳動元件406將位於位置B的燈管承載 裝置401拉向位置A的方向。藉由此拉力，位於下方的光電 轉換器承載裝置402便由位置A移向位置B，兩者呈同步異 向的方向移動。反之，在回復原位時，第四滑輪4054便由 馬達（未示於圖）驅動，作順時針方向轉動，傳動元件406 便將光電轉換器承載裝置402由位置B移向位置A，同時帶 動燈管承載裝置401，使之由位置A移向位置B，兩者亦成 同步異向的方向移動。其餘之裝置的動作，位置與功能等 皆與圖3所描述的相似，不再贅述。 圖5與圖4相近，其傳動元件501爲馬蹄型的皮帶或鋼 索。不同的是，圖5中的第一滑輪502及第二滑輪503皆爲 被動滑輪，而受主動滑輪5 04的控制。當主動滑輪向逆時針 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） A7 B7 五、發明説明（） 方向旋轉時，第一滑輪5 02及第二滑輪503皆向順時針方向 轉動。此時：第一滑輪502上所環繞的皮帶便拉向第二滑輪 5 0 3 ’同時使位於傳動元件501上的燈管承載裝置5 05及光 電轉換器承載裝置506呈同步異向移動。 綜上所述，由於本發明的同步異向傳動裝置的設計可 簡化掃描器的內部結構，所以組裝容易，並且容易縮小掃 描器的體積。也因爲整體的結構簡單，傳動的馬達動力可 以很小’掃描器的重量也可以減輕。就掃描的影像品質而 言，由於本發明將內部的兩片反射鏡固定於機台內，所以 反射影像的品質更爲穩定。 以上所述僅爲本發明之較佳實施例而已，且已達廣泛 之實用功效，凡依本發明申請專利範圍所作之均等變化與 修飾，皆仍屬本發明專利涵蓋之範圍內》 (請先閲讀背面之注意事項再填寫本頁) 訂 狳！ 經濟部中央標準局員工消費合作社印製 張 一紙 本 適 準 標 家31S656 V. Description of the invention () A7 'B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy 5-1 Field of invention and background A. Field of invention The present invention is an improved device for optical scanners, especially a lamp tube The carrying device and the photoelectric converter carrying device are synchronously driven in opposite directions, and at the same time, the scanning device can maintain the same optical path. B. Background of the Invention In order to maintain the optical path unchanged, the conventional optical scanning devices generally have two designs: single and interactive transmission. The design of the single drive is shown in Figure 1, that is, all the optical components, including the lamp tube 103, the reflector 106, 104, 105, the photoelectric conversion device 108, and the lens 107 are arranged in the same Carrier 102 (carriage). When the position is fixed, its relative position does not change to maintain the stability of its optical path. During scanning, the document 101 is placed above the machine, the optical carrier 102 is installed on a fixed rail 111, and the driving device 109 is rotated by a motor (not shown) and drives a transmission element 110 (such as a belt, a steel cable ), And move the optical carrier 102 back and forth to scan the document. Because the main optical components are placed on the same optical carrier, the motor power required for this design, large volume, heavy weight, and high cost of the carrier is also high. Moreover, because the scanned document has to move the optical carrier, it is difficult to shrink the entire body. If you want to reduce the volume of the optical carrier, the optical path must be reduced. However, if the optical path is shortened, then the lens, (please read the precautions on the back before filling in this page) The paper size of the order is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ^ 1θ65β Α7 --- ----; _ B7 V. Description of the invention () The angle must be increased. Relatively, the brightness of the image is also increased. Therefore, in terms of shrinking the body, a single transmission type is not an ideal design. Another interactive type The driven scanner is shown in Figure 2. Figure 2 is a view showing the relative position of its optical components. Optical elements such as lamp tube 2 05 and reflector 204 are fixed on a lamp carrier 202, and the other reflector It is installed on another carrying device 201, and the photoelectric conversion device 203 is fixed on the body. When the document is placed on the upper side to be scanned, the lamp carrying device 202 moves forward. According to the principle of halving the driving device, the lamp carrying device is halved. When 2 0 2 moves forward by a distance of Υ, the mirror carrying device 20 1 also moves forward by a distance of 1/2 Υ to keep the optical path unchanged. The scanner with an interactive drive is smaller than the scanner with a single drive. However, , To maintain The optical path is unchanged, and the structure of the components of the interactively driven scanner is very complicated and time-consuming to assemble. In addition, because all the internal mirrors are moving during scanning, the polarized light I when the mirror is moving will increase and cause The color shift or deviation of the image will affect the resolution of the image. (Please read the precautions on the back before filling out this page), vs. Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5 ~ 2 The purpose of the invention and the description are based on the above Problem, the main purpose of the present invention is to provide an optical scanning device with stable image quality, small size, light weight and simple structure. Another object of the present invention is to provide an improved lens that can increase the optical path -5 ^ # ^ 应, and improve the image quality of the optical scanning device. Another object of the present invention is to provide a simple structure, easy to assemble the optical scanning device "This paper scale is applicable to China National Standards (CNS) A4 specifications (210X297 mm) B7 5. Description of the invention () Another object of the present invention is to provide an optical scanning device which can be driven by a low-power motor. ≫ Based on the above purpose The present invention mainly includes: a lamp tube carrying device, a plurality of cross mirrors, a photoelectric converter carrying device and a synchronizing counter-direction transmission device. The synchronous counter-direction transmission device includes a closed-circuit transmission element. When the motor drives the driving device At this time, the transmission element causes the lamp tube carrier and the photoelectric converter carrier to move synchronously in opposite directions. Due to the circuit design of the transmission element, the internal structure of the scanner can be simplified and the volume can be reduced. Moreover, the reflector of the present invention is a month The fixed format can make the quality of the reflected image more stable. 5-3 Brief description of the drawings. FIG. 1 is a side cross-sectional view showing the structure of a single transmission scanning device. FIG. 2 is a view below showing the structure of an interactive transmission scanning device Fig. 3 is a side sectional view showing the structure of the preferred embodiment of the present invention. Fig. 4 is a side sectional view showing the structure of another preferred embodiment of the present invention. Printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling in this page). Figure 5 is a side cross-sectional view showing the structure of another preferred embodiment of the present invention. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm). 313656 A7 is printed by the Employee Consumer Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economy __; ______B7 5. Description of the invention () 5 ~ 4 The detailed description of the invention has been simplified The internal structure of the conventional scanner, the present invention completely improves the structure of the conventional transmission element. The preferred embodiment of the present invention is shown in FIG. The invention mainly includes: a lamp tube carrying device 301, a second reflecting mirror Γ 3 0 3, a third reflecting mirror 3 04, a photoelectric converter carrying device 3 02, and a same-step different-direction driving device 3 0 5, 3 0 6 . The lamp tube carrying device 301 has a lamp tube 310 and a first reflecting mirror 311. The angle of the first reflecting mirror 311 is just right to reflect the scanned image to the second reflecting mirror 3 03 »The second reflecting mirror 3 03 then reflects the image To the third mirror 30. In order to keep the optical path unchanged and keep the image stable ^ The second and third mirrors 303, 304 are fixed at the reflection angles above and below the machine, namely the first mirror 311 and the second mirror 303 Angle of reflection. The angle formed by the third mirror 30 4 can reflect the image to the photoelectric converter bearing device 30 2. The photoelectric converter carrying device 302 has a photoelectric conversion device 313, such as CCD or CIS, and a lens 312. The image is reflected by the third mirror 30 4 to the lens 3 12, and then the photoelectric conversion device 3 13 captures its image and converts it into an electronic signal. The lamp tube carrying device 301 and the photoelectric converter carrying device 302 are respectively installed on the upper and lower supporting elements 307 and 308 in the machine table so that they can slide back and forth. The supporting elements 3 07 and 3 08 can be any elements with supporting and sliding functions, such as sliding shafts or sliding rods. The lamp bearing device 301 and the photoelectric converter bearing device 302 can be submitted by a synchronous counter-direction transmission device 3 0 5, 3 06 (please read the precautions on the back before filling this page) Order Tick! The standard is applicable to the Chinese National Standard (CNS) A4 specification (210X297 Gongchu). Printed by the Employees Consumer Cooperative of the Central Bureau of Samples of the Ministry of Economic Affairs A7 B7 V. Description of invention () Synchronous heterogeneous movement. The synchronous counter-direction transmission device includes four driving devices 305, such as pulleys, and a transmission element 306. The driving devices are located at the four corners around the inside of the machine, and are driven by a motor (not shown), and drive the driving elements 306, such as belts and steel cables. The transmission element surrounds the four driving devices 305 in a closed circuit. When the motor rotates, the driving device 305 is driven, and the rotation of the driving device 305 causes the transmission element 306 to drive the lamp tube carrying device 301 and the photoelectric converter carrying device 302 to make it move in a synchronous and opposite direction. When scanning the document, the document 330 is placed above the machine 340. The motor drives the driving device 305 and pulls the transmission element 306 to move the lamp carrier 301 from position A to position B. At this time, since the transmission element 306 is a closed circuit, the photoelectric converter carrier 302 moves from position B to position A. In this way, the two movements are synchronized and opposite. When the lamp tube carrying device 301 and the photoelectric converter carrying device 3 02 move, their optical paths remain unchanged, because the second reflecting mirror 3 03 and the third reflecting mirror 30 4 are fixed above and below the machine table 34. The angle of reflection, and the position of the lamp tube carrying device 301 and the photoelectric converter carrying device 302 will always move synchronously in opposite directions, so as to ensure that the optical path is kept equidistant at the position of each file. Figure 4 shows another preferred embodiment of the present invention. The difference between Figure 4 and Figure 3 is only in the transmission element. Anyone familiar with this art knows that the synchronous counter-drive device of the present invention can have many variations and still achieve the same effect. Figures 4 and 5 are two possible examples. As shown in Figure 4, the synchronous counter-direction transmission device includes four driving devices, such as pulleys 4051, 405 2 ', the paper size is applicable to the Chinese National Standard (CNS) A4 specifications (2 丨 0X297mm) Production II (please read first Note on the back and then fill out this page) Threading-313656 Printed by the Central Bureau of Economics of the Ministry of Economic Affairs, Beigong Consumer Co., Ltd. V. Description of invention () 40 5 3, 4054 and a transmission element 406. In the driving device, only the first pulley 4051 and the fourth pulley 4054 are active pulleys and are driven by a motor (not shown), and the rest are all passive pulleys. Moreover, the first pulley 4051 and the fourth pulley 4054 are not driven by the motor at the same time. When one of the pulleys is the active pulley, the other is the passive pulley. It is not necessary that the transmission element 406 is connected between the first pulley 4051 and the fourth pulley 4 0 5 4. The transmission element 406 is connected to the second pulley 4052, the third pulley 4053, and finally the fourth pulley 4054 by one end of the first pulley 4051. Both ends of the transmission element 406 may be a device equipped with a spring, or a device having a telescopic function. When the pulley 4051 is driven by the motor, the pulley 4051 rotates counterclockwise, causing the transmission element 406 to pull the lamp carrier 401 at the position B toward the direction of the position A. By this pulling force, the photoelectric converter carrying device 402 located below moves from position A to position B, and the two move in a synchronous and opposite direction. Conversely, when returning to its original position, the fourth pulley 4054 is driven by a motor (not shown) and rotates clockwise, and the transmission element 406 moves the photoelectric converter carrying device 402 from position B to position A while driving The lamp carrying device 401 is moved from position A to position B, and the two also move in a synchronous and opposite direction. The actions, positions and functions of the remaining devices are similar to those described in FIG. 3 and will not be repeated here. Fig. 5 is similar to Fig. 4, and its transmission element 501 is a horseshoe-shaped belt or cable. The difference is that the first pulley 502 and the second pulley 503 in Fig. 5 are both passive pulleys and are controlled by the active pulley 504. When the active pulley is counterclockwise (please read the precautions on the back before filling in this page), the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) A7 B7 5. Invention description () Both the pulley 502 and the second pulley 503 rotate clockwise. At this time, the belt around the first pulley 502 is pulled toward the second pulley 503 'and the lamp carrier 50 05 and the photoelectric converter carrier 506 located on the transmission element 501 move synchronously in opposite directions. In summary, since the design of the synchronous counter-transmission device of the present invention can simplify the internal structure of the scanner, it is easy to assemble and it is easy to reduce the size of the scanner. Also because the overall structure is simple, the power of the transmission motor can be very small and the weight of the scanner can also be reduced. As far as the quality of the scanned image is concerned, since the present invention fixes the two internal mirrors in the machine, the quality of the reflected image is more stable. The above are only the preferred embodiments of the present invention and have achieved a wide range of practical effects. Any changes and modifications made in accordance with the scope of the patent application of the present invention are still within the scope of the patent of the present invention "(please first Read the precautions on the back and then fill out this page) Order madaga! Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs