TW571567B

TW571567B - Light-guide device

Info

Publication number: TW571567B
Application number: TW91116321A
Authority: TW
Inventors: Jen-Shou Tseng
Original assignee: Veutron Corp
Priority date: 2002-07-23
Filing date: 2002-07-23
Publication date: 2004-01-11

Abstract

A light-guide device have one light-guide tube being used for leading light to scanning area and leading light to scan head, so that to avoid light-scattering and to isolate the interference of light.

Description

571567 五、發明說明（1) 本發明是有關於一種導光裝置，且特別是有關於一種隔絕雜光干擾以及避免光散射之導光管。 ^ 隨著電腦性能的大幅進步，以及網際網路與多媒體技術的高度發展，一般文件或圖片的影像輸入作業，均需透過例如光學掃描器相關週邊設備來擷取文字或圖案的影像，並將影像透過類比/數位轉換器（A/D converter)轉換成數位訊號輸出，有助於使用者在電腦或其他的電子產品上進行景> 像棺案之顯示、辨識、編輯、儲存及輸出等動作。在掃描系統之中’掃描模組之光源與第一反射鏡片是顯露在外的，因此影響掃描品質的要素之一，即是光源投射至文件之光線是否能集中在掃描區域上，以及文件的影像是否能避免雜光的干擾而投射至第一片反射鏡上。請參照第1圖，其繪不習知掃描模組i 〇〇中光源與第一片反射鏡之相關配置圖，其中光源1 20係配置在殼體丨丨〇之光源承載座118上，第一片反射鏡130、第二片反射鏡132、第三片反射鏡1 3 4、鏡頭1 4 0以及感光元件丨5 〇係配置在殼體丨j 〇内，殼體11 0具有一透光狹縫11 2，可以允許光投射到殼體 110的内部。由上往下看，可清楚看到光源12〇以及透光狹縫112下之第一片反射鏡130，而光源12〇例如是一日光燈管，其長邊與文件160的寬度相當，而透光狹縫112有足夠的寬度，能使反射之光線投射至第一片反射鏡上。如第1圖所示，光源1 2 〇投射之光線必須為一線性光，才能使光線投射至文件160時，形成一掃描線（Scan571567 V. Description of the invention (1) The present invention relates to a light guide device, and more particularly to a light guide tube for preventing stray light interference and avoiding light scattering. ^ With the dramatic advancement of computer performance and the high development of the Internet and multimedia technology, image input operations for general documents or pictures need to capture images of text or patterns through peripheral devices such as optical scanners, and The image is converted into digital signal output through the analog / digital converter, which helps users to perform scenes on a computer or other electronic products> display, identification, editing, storage, and output of coffins action. In the scanning system, the light source and the first reflecting lens of the scanning module are exposed. Therefore, one of the factors affecting the scanning quality is whether the light projected by the light source onto the document can be concentrated on the scanning area and the image of the document. Whether it can avoid the interference of stray light and project it onto the first mirror. Please refer to FIG. 1, which depicts the relevant configuration diagram of the light source and the first reflector in the scanning module i 〇〇, where the light source 120 is arranged on the light source support 118 of the housing 丨丨〇, A mirror 130, a second mirror 132, a third mirror 1 34, a lens 140, and a light receiving element 丨 5 〇 are arranged in the housing 丨 j 〇, the housing 110 has a light transmission The slit 112 can allow light to be projected to the inside of the housing 110. Looking from the top to the bottom, the light source 12o and the first reflector 130 under the light-transmitting slit 112 can be clearly seen. The light source 12o is, for example, a daylight tube, whose long side is equal to the width of the document 160, and is transparent. The light slit 112 has a sufficient width to allow the reflected light to be projected onto the first mirror. As shown in Figure 1, the light projected by the light source 120 must be a linear light, so that when the light is projected onto the document 160, a scan line (Scan

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五、發明說明（2) 1 ine) 置有_ 為使光線不發散出去，故習知在光源1 2 〇的上方配聚光透鏡1 2 2，如此能使光線能集中在文件1 6 〇之上’並且形成更咼亮度之掃描線。雖然光線經由透鏡1 2 2 達到聚光的效果，但仍不能確保光不會散射到周圍。同樣，如第1圖所示，習知的透光狹縫丨丨2周圍並沒有避免雜光干擾的裝置，因此反射之光線均有可能經由透光狹縫進入殼體110中，而投射到第一片反射鏡13〇上，影響影像的品質。因光線至此本發明的目的在提出至第為文件上片反射達本發一掃描模組上殼體具有一透第二導配置於配置於為一文件鏡、一光源係感光元光管所光源與文件與達本發進行掃鏡頭、配置於件係配種 ’以避免光散射，並引鏡上，以避免雜光進入明之上述目的，提出一，而掃描模組具有一光光狹縫，導光裝置係由構成。其中，第—導光文件之間，而第二導光透光狹縫之間。明之上述目的，提出一描’其主要係由一鉍體導光裝置，可以引導導光線經由透光狹縫殼體中。種導光裝源以及一一第一導管係與殼管係與殼光裝置係由一第一導光管係種掃描模、一光源裝置所構，而反射係與殼體導光管所，而第二置，適用於殼體，且該光管以及一體連接，且體連接，且組，適於對、多個反射成。其中’ 鏡、鏡頭、連接，且導組成，其中導光管配置一感光元件以及—導光殼體中，用以照射文件置於殼體中。導光裝置第一導光管以及一第二配置於光源與文件之間V. Description of the invention (2) 1 ine) With _ In order to prevent the light from diffusing, it is known to arrange a condenser lens 1 2 2 above the light source 1 2 0, so that the light can be concentrated in the document 1 6 0 Up 'and form a scan line with more brightness. Although the light is focused through the lens 1 2 2, it is still not guaranteed that the light will not be scattered to the surroundings. Similarly, as shown in FIG. 1, there is no device to prevent stray light interference around the conventional light-transmitting slits 丨 2, so reflected light may enter the housing 110 through the light-transmitting slits and be projected onto The first mirror 130 affects the image quality. Because of the light so far, the purpose of the present invention is to reflect the first document. The upper housing of a scanning module has a transparent second guide configured to be arranged as a document mirror and a light source. Scan the lens with the document and Dabongfa, configure it on the parts to match the light to avoid light scattering, and guide the lens to prevent stray light from entering the above-mentioned purpose. A scanning module is provided with a light slit. The optical device is composed of. Among them, between the first light guide file and the second light guide between the light-transmitting slits. In order to solve the above-mentioned purpose, a description is proposed, which is mainly composed of a bismuth body light guide device, which can guide light through a transparent slit housing. A light guide installation source and a first conduit system and a shell tube system and a shell light device are constituted by a first light guide system scan mode and a light source device, and a reflection system and a housing light guide device. The second set is suitable for the housing, and the light pipe is integrated with the body, and is connected to the body, and the group is suitable for multiple reflections. Among them, a mirror, a lens, a connection, and a light guide, and the light guide tube is provided with a photosensitive element and a light guide case, which is used to illuminate the document and placed in the case. Light guide device A first light guide tube and a second light guide are arranged between the light source and the document

571567 五、發明說明（3) 於文件與透光狹缝之間。依照本發明之一較佳實施例，導光管内部例如為一中空狀’且導光管之内壁具有一反射層。此外，更包括一聚光透鏡，配置於第一導光管内。依照本發明之一較佳實施例，更包括一導光體，配置於導光管内部。另外，第一導光管靠近文件之一端與第二導光管靠近文件之一端可以連接，且導光管亦可與掃描模組一體成形。為讓本發明之上述目的、特徵、和優點能更明顯易懂，下文特舉一較佳實施例，並配合所附圖式，作詳細說明如下：圖式之標不說明· 1 0 0、2 0 0 :掃描模組 I 1 0 :殼體 II 2 :透光狹縫 11 8 :光源承載座 1 2 0 :光源 122、140 :透鏡 130、132、134 :反射鏡 1 5 0 :感光元件 1 6 0 :文件 2 1 0 :導光裝置 212 、 218 :導光管 214 :導光體571567 V. Description of the invention (3) Between the document and the light-transmitting slit. According to a preferred embodiment of the present invention, the inside of the light guide tube is, for example, a hollow shape 'and the inner wall of the light guide tube has a reflective layer. In addition, a condenser lens is further arranged in the first light guide tube. According to a preferred embodiment of the present invention, a light guide body is further disposed inside the light guide tube. In addition, one end of the first light guide tube near the document and one end of the second light guide tube near the document may be connected, and the light guide tube may be integrally formed with the scanning module. In order to make the above-mentioned objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is given below in conjunction with the accompanying drawings to describe in detail as follows: The symbols of the drawings are not explained. 1 0 0, 2 0 0: Scanning module I 1 0: Housing II 2: Light-transmitting slit 11 8: Light source holder 1 2 0: Light source 122, 140: Lens 130, 132, 134: Mirror 1 50: Photosensitive element 1 6 0: Document 2 1 0: Light guide 212, 218: Light guide tube 214: Light guide

9501twf.ptd 第6頁 571567 五、發明說明（4) 2 1 6 :反射層較佳實施例請參照第2圖’其繪示本發明一較佳實施例之一種掃描模組的示意圖。掃描模組2 〇〇主要係由一殼體丨丨〇、一光源120、三個反射鏡130、132、134、一鏡頭140、一感光元件150以及一導光裝置210所構成。其中，殼體u〇具有一透光狹縫112，而光源120配置在殼體11〇之光源承載座 11 8上’用以照射一文件1 6 〇。此外，反射鏡j 3 〇、j 3 2、 134、鏡頭140以及感光元件150配置在殼體no中，而導光裝置210配置於殼體11〇上，其係由二導光管212、218所組成，導光管218配置於光源120與文件160之間，而導光管 2 1 2配置於文件1 6 0與透光狹缝11 2之間。如第2圖所示，光源1 2 0投射至文件1 6 0所反射之光線經由透光狹縫11 2進入殼體内，並依序投射在第一片反射鏡130、第二片反射鏡132以及第三片反射鏡134，再經由鏡頭1 4 0聚焦後，成像在感光元件1 5 〇上。同樣，如第2圖所示，導光管2 1 2、2 1 8内部例如為一中空狀’當光源1 2 〇之光線投射至文件1 6 0時，藉由導光管 2 1 8，使光線能集中在文件1 6 0上，並加強照射光之亮度，而導光管212能引導反射光經由透光狹縫112進入殼體110 内’並投射在第一片反射鏡1 3 0上。如此能使光不會發散出去’且能避免雜光的干擾。請同時參照第2圖以及第3圖，其中第3圖繪示本發明一較佳實施例之導光裝置的内部剖視圖。為使導光管9501twf.ptd Page 6 571567 V. Description of the invention (4) 2 1 6: Reflective layer Preferred embodiment Please refer to FIG. 2 ′ for a schematic diagram of a scanning module according to a preferred embodiment of the present invention. The scanning module 200 is mainly composed of a casing, a light source 120, three reflecting mirrors 130, 132, 134, a lens 140, a photosensitive element 150, and a light guiding device 210. Among them, the housing u0 has a light-transmitting slit 112, and the light source 120 is disposed on the light source support base 118 of the housing 110 to illuminate a document 160. In addition, the mirrors j 3 0, j 3 2, 134, the lens 140, and the light receiving element 150 are disposed in the casing no, and the light guide device 210 is disposed on the casing 11, which is composed of two light guide tubes 212, 218 As a result, the light guide tube 218 is disposed between the light source 120 and the document 160, and the light guide tube 2 12 is disposed between the document 160 and the light-transmitting slit 112. As shown in FIG. 2, the light reflected by the light source 120 projected on the document 160 enters the housing through the light-transmitting slit 11 2 and is sequentially projected on the first mirror 130 and the second mirror. 132 and the third reflecting mirror 134 are focused by the lens 140 and formed on the photosensitive element 150. Similarly, as shown in FIG. 2, the inside of the light guide tube 2 1 2, 2 1 8 is, for example, a hollow shape. When the light from the light source 1 2 0 is projected to the document 160, the light guide tube 2 1 8 The light can be concentrated on the document 160, and the brightness of the irradiated light can be enhanced, and the light guide tube 212 can guide the reflected light into the housing 110 through the light-transmitting slit 112 'and be projected on the first mirror 1 3 0 on. In this way, the light will not be emitted 'and the interference of stray light can be avoided. Please refer to FIG. 2 and FIG. 3 at the same time, wherein FIG. 3 illustrates an internal cross-sectional view of a light guide device according to a preferred embodiment of the present invention. For the light guide

9501twf.ptd 第7頁 571567 五、發明說明（5) 2 1 2、2 1 8有更佳的導光效果，導光管2 1 8内部例如配置有一聚光透鏡122，且導光管212、218内壁上例如具有一反射層2 1 6，以增加照射光的亮度。當然，導光管2 1 2、2 1 8 的内部例如具有一導光體2 1 4，可進一步提昇集光效果。換言之，導光管不僅具有導光的作用，且具有提高亮度之功能。請參照第4圖，其繪示本發明一較佳實施例之導光裝置的示意圖。針對導光裝置2 1 0之外形，亦可使導光管 212、218兩端相連接，其中，導光裝置210中導光管218靠近文件160之一端與導光管212靠近文件160之一端連接起來，能進一步加強配置上的方便性。熟悉此技藝者，亦可使導光管與掃描模組之殼體一體成形，減少製作的成本。綜上所述’本發明一種掃描模組至少具有下列優點： 1·本發明之掃描模組，藉由導光裝置中之導光管，可加強光源之光線更能集中在文件上。 2·本發明之掃描模組，藉由導光裝置中之導光管，可引導光線經由透光狹縫進入殼體内。 3.本發明之掃描模組，可避免雜光的干擾，實用性高，且製作成本低廉。雖然本發明已以一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;^發明之精，和範圍内，當可作各種之更動與潤飾，因此本發明之：護範圍當視後附之申請專利範圍所界定者為準。 μ9501twf.ptd Page 7 571567 V. Description of the invention (5) 2 1 2, 2 1 8 has a better light guide effect. The light guide tube 2 1 8 is configured with a condenser lens 122, and the light guide tube 212, A reflective layer 2 1 6 is provided on the inner wall of 218 to increase the brightness of the irradiated light. Of course, the light guides 2 1 2 and 2 1 8 have, for example, a light guide 2 1 4 inside, which can further improve the light collection effect. In other words, the light guide tube not only has the function of guiding light, but also has the function of improving brightness. Please refer to FIG. 4, which illustrates a schematic diagram of a light guide device according to a preferred embodiment of the present invention. For the shape of the light guide device 210, the two ends of the light guide tube 212 and 218 can also be connected, where the light guide tube 218 in the light guide device 210 is near one end of the document 160 and the light guide tube 212 is near one end of the document 160. Connected to further enhance the convenience of configuration. Those skilled in this art can also integrate the light guide tube and the housing of the scanning module into one body, reducing the cost of production. In summary, a scanning module of the present invention has at least the following advantages: 1. The scanning module of the present invention can strengthen the light from the light source to focus on the document through the light guide tube in the light guide device. 2. The scanning module of the present invention can guide light into the casing through the light-transmitting slit through the light guide tube in the light guide device. 3. The scanning module of the present invention can avoid the interference of stray light, has high practicability, and has low manufacturing cost. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. 'Any person skilled in the art will not depart from; ^ the essence of the invention, and the scope, can be modified and retouched, Therefore, the scope of protection of the present invention shall be determined by the scope of the attached patent application. μ

571567 圖式簡單說明第1圖繪示習知掃描模組中光源與第一片反射鏡相關配置圖；第2圖繪示本發明一較佳實施例之一種掃描模組的示意圖；第3圖繪示本發明一較佳實施例之導光裝置的示意圖；以及第4圖繪示本發明一較佳實施例之導光裝置的内部剖視圖。571567 Brief description of the drawings Figure 1 shows the related configuration diagram of the light source and the first reflector in the conventional scanning module; Figure 2 is a schematic diagram of a scanning module according to a preferred embodiment of the present invention; Figure 3 A schematic diagram of a light guide device according to a preferred embodiment of the present invention is shown; and FIG. 4 is an internal cross-sectional view of the light guide device according to a preferred embodiment of the present invention.

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Claims

571567 六、申請專利範圍 1 · 一種導光裝置，適用於一掃描模組上，而該掃描模組具有一光源以及一殼體，且該殼體具有一透光狹縫，該導光裝置至少包括·· 一第一導光管，與該殼體連接，該第一導光管係配置於該光源與該文件之間；以及一第二導光管，與該殼體連接，該第二導光管係配置於該文件與該透光狹縫之間。 2. 如申請專利範圍第1項所述之導光裝置，其中該第一導光管之内壁具有一反射層。 3. 如申請專利範圍第1項所述之導光裝置，其中該第二導光管之内壁具有一反射層。 4. 如申請專利範圍第1項所述之導光裝置，其中更包括一導光體，配置於該第一導光管内。 5. 如申請專利範圍第1項所述之導光裝置，其中更包括一導光體，配置於該第二導光管内。 6. 如申請專利範圍第1項所述之導光裝置，其中該第一導光管内部係為一中空狀。 7. 如申請專利範圍第1項所述之導光裝置，其中該第二導光管内部係為一中空狀。 8. 如申請專利範圍第1項所述之導光裝置，其中更包括一聚光透鏡，配置於該第一導光管内。 9. 如申請專利範圍第1項所述之導光裝置，其中該第一導光管靠近該文件之一端與該第二導光管靠近該文件之一端連接。571567 6. Scope of patent application 1 · A light guide device is suitable for a scanning module, and the scanning module has a light source and a housing, and the housing has a light-transmitting slit, and the light guide device is at least It includes: a first light guide tube connected to the housing, the first light guide tube is arranged between the light source and the file; and a second light guide tube connected to the housing, the second The light guide tube is arranged between the document and the light-transmitting slit. 2. The light guide device according to item 1 of the scope of patent application, wherein the inner wall of the first light guide tube has a reflective layer. 3. The light guide device according to item 1 of the scope of patent application, wherein the inner wall of the second light guide tube has a reflective layer. 4. The light guide device according to item 1 of the scope of the patent application, further comprising a light guide body arranged in the first light guide tube. 5. The light guide device according to item 1 of the scope of patent application, further comprising a light guide body disposed in the second light guide tube. 6. The light guide device according to item 1 of the scope of patent application, wherein the inside of the first light guide tube is hollow. 7. The light guide device according to item 1 of the scope of patent application, wherein the inside of the second light guide tube is hollow. 8. The light guide device according to item 1 of the patent application scope, further comprising a condenser lens disposed in the first light guide tube. 9. The light guide device according to item 1 of the scope of patent application, wherein the end of the first light guide tube near the document is connected to the end of the second light guide tube near the document.

9501twf.ptd 第10頁 571567 六、申請專利範圍 1 〇 ·如申請專利範圍第1項所述之導光裝置，其中該第一導光管係與該掃描模組一體成形。 11.如申請專利範圍第1項所述之導光裝置，其中該第二導光管係與該掃描模組一體成形。 1 2. —種掃描模組，適於對一文件進行掃描，至少包括：一殼體，該殼體具有一透光狹縫；一光源，配置於該殼體中；複數個反射鏡，配置於該殼體中；一鏡頭，配置於該殼體中；一感光元件，配置於該殼體中；以及一導光裝置，與該殼體連接，該導光裝置具有一第一導光管以及一第二導光管，其中該第一導光管係配置於該光源與該文件之間，而該第二導光管係配置於該文件與該透光狹縫之間。 1 3.如申請專利範圍第1 2項所述之掃描模組，其中該第一導光管之内壁係具有一反射層。 1 4.如申請專利範圍第1 2項所述之掃描模組，其中該第二導光管之内壁係具有一反射層。 1 5.如申請專利範圍第1 2項所述之掃描模組，其中更包括一導光體，配置於該第一導光管内。 1 6.如申請專利範圍第1 2項所述之掃描模組，其中更包括一導光體，配置於該第二導光管内。 1 7.如申請專利範圍第1 2項所述之掃描模組，其中該9501twf.ptd Page 10 571567 6. Scope of patent application 1 〇 The light guide device described in item 1 of the scope of patent application, wherein the first light guide tube is integrally formed with the scanning module. 11. The light guide device according to item 1 of the scope of patent application, wherein the second light guide tube is integrally formed with the scanning module. 1 2. A scanning module adapted to scan a document, at least including: a casing having a light-transmitting slit; a light source disposed in the casing; a plurality of reflectors disposed In the casing; a lens disposed in the casing; a photosensitive element disposed in the casing; and a light guide device connected to the casing, the light guide device having a first light guide tube And a second light pipe, wherein the first light pipe is arranged between the light source and the document, and the second light pipe is arranged between the document and the light-transmitting slit. 1 3. The scanning module according to item 12 of the scope of patent application, wherein the inner wall of the first light guide tube has a reflective layer. 1 4. The scanning module according to item 12 of the scope of patent application, wherein the inner wall of the second light guide tube has a reflective layer. 1 5. The scanning module according to item 12 of the scope of patent application, further comprising a light guide body disposed in the first light guide tube. 16. The scanning module according to item 12 of the patent application scope, further comprising a light guide body disposed in the second light guide tube. 1 7. The scanning module according to item 12 of the scope of patent application, wherein the

9501twf.ptd 第11頁 571567 六、申請專利範圍第一導光管内部係為一中空狀。 1 8.如申請專利範圍第1 2項所述之掃描模組，其中該第二導光管内部係為一中空狀。 1 9.如申請專利範圍第1 2項所述之掃描模組，其中更包括一聚光透鏡，配置於該第一導光管内。 2 0 .如申請專利範圍第1 2項所述之掃描模組，其中該第一導光管靠近該文件之一端與該第二導光管靠近該文件之一端連接。9501twf.ptd Page 11 571567 6. Scope of patent application The inside of the first light guide tube is hollow. 1 8. The scanning module according to item 12 of the scope of patent application, wherein the inside of the second light guide tube is hollow. 19. The scanning module according to item 12 of the scope of patent application, further comprising a condenser lens disposed in the first light guide tube. 20. The scanning module according to item 12 of the scope of the patent application, wherein the end of the first light guide tube near the document is connected to the end of the second light guide tube near the document.

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