1282409 玖、發明說明： 【發明所屬之技術領域】 本發明係關於一種影像擷取系統，更明確地說，係關 於一種用於軟性印刷電路板缺陷檢測之影像擷取系統。 【先前技術】 自動光學檢測系統(AOI)主要的結構為取像系統及 軟體演算系統。其可先由取像系統取得高對比的銅箔線 * 路影像後，再經由軟體演算法判斷缺陷的位置。應用於 印刷電路板(Printed Circuit Board，PCB)的 AOI 發展已 久，且已有數家相關的AOI儀器製造商。然而，軟性印 刷電路板(Flexible Printed Circuit Board，FPC)通常會在 表面貼上一層保護膜，以現行的A0I儀器來檢測FPc B守，會因為保護膜的反光太強或表面不平整等影響，導 致所取得的影像品質不佳且具有反光現象而無法檢測。 基於上述理由及下文所述之其它理由，熟習本技術 的人士於閱讀且瞭解本說明書後便會明白，本技術需要 =種經改良之用於軟性印刷電路板缺陷檢測之影像擷取 • 系統以克服上述問題。 【發明内容】 本發明的目的係提供一種用於軟性印刷電路板缺 陷檢測之影像擷取系統，其可取得高對比的軟性印刷電 路板的線路影像，提供作為缺陷檢測之用。 為達上述目的，本發明提供一種用於軟性印刷電路 板缺陷檢測之影像擷取系統，包括··一照明系統，用以 為一待檢測軟性印刷電路板提供照明，其具有至少兩個 光源、分別與該等至少兩個光源連接的至少兩條光纖、 5BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an image capture system, and more particularly to an image capture system for defect detection of flexible printed circuit boards. [Prior Art] The main structure of the automatic optical inspection system (AOI) is an image taking system and a software calculation system. The image of the defect can be determined by the software algorithm after obtaining the high contrast copper foil line image. AOIs for Printed Circuit Boards (PCBs) have been around for a long time and there are several related AOI instrument manufacturers. However, the Flexible Printed Circuit Board (FPC) usually has a protective film on the surface, and the current A0I instrument detects the FPC B, which may be affected by the reflection of the protective film or the unevenness of the surface. The resulting image is of poor quality and is reflective and cannot be detected. Based on the above reasons and other reasons described below, those skilled in the art will understand, after reading and understanding the present specification, that the present technology requires an improved image capture system for flexible printed circuit board defect detection. Overcome the above problems. SUMMARY OF THE INVENTION An object of the present invention is to provide an image capture system for flexible printed circuit board defect detection that can obtain a line image of a high contrast flexible printed circuit board for use as a defect detection. To achieve the above object, the present invention provides an image capturing system for defect detection of a flexible printed circuit board, comprising: an illumination system for providing illumination for a flexible printed circuit board to be inspected, having at least two light sources, respectively At least two optical fibers connected to the at least two light sources, 5
較佳地，該取像鏡頭係一焦距為8〇mm 的定焦取像鏡頭。 1282409 以及分別與該等至少兩條光纖連接的至少兩個聚光構 件；一取像模組，用以取得該待檢測軟性印刷電路板的 光學影像，其具有一相機、一裝設於該相機前方的取像 鏡頭、以及一裝設於該取像鏡頭前方的濾鏡，該取像模 組係固設於該待檢測軟性印刷電路板的上方；以及一移 動平台，其上置放該待檢測軟性印刷電路板以便移動^ 待檢測軟性印刷電路板，該移動平台的表面會預作不反 光處理’並且在该移動平口表面上設置複數個透氣孔， 藉由一真空吸附裝置透過該等複數個透氣孔將該移動平 台上的待測軟性印刷電路板平坦貼附至該移動平台表 面，以供檢測使用。 σ又 較佳地，該照明系統中的該等至少兩個光源為白光 光源。 較佳地，該照明系統中的該等至少兩個聚光構 分別被連接至該等至少兩條光纖的輪出端。 你 較佳地，該照明系統中的該等至少兩個聚光 柱狀聚焦透鏡。 糸 車父佳地，該照明系統的至少兩條投光路徑對 取像鏡頭之光軸且會以一預設夾角對該待檢測軟性印= 電路板進行投光。 制 較佳地，該等預設夾角介於20度至3〇度之間 較佳地，該預設失角的最佳角度為25度。 較佳地，該取像模組中的相機為線型€(：1：>相 較佳地，該取像模組中的濾鏡為紅色濾、鏡。* 而光圈為F5.6 1282409 植動平台可程式化移動，可使該取像r Ξ仔到銅祕見75微米以上之軟性印刷電路板的掃 之光=地°亥私動平台之移動方向垂直於該取像鏡頭 敷移動平台預作不反光處理，可於其上塗 【實施方式】 的問題及其它問題。有關 實施例之附圖來加以說明，不過==2發明較佳 技術的人士於閱讀且瞭解τ面日^瞭㈣係’熟習本 時獲致相同功效。、 ρ可修改本發明，同 參考第一圖，係根據本發明之 :檢:之:象擷取系統(簡稱影像操；^ ®该衫像擷取系統100包含：— ）木構 模組102 ;及-移動平台103，其中、：照明系统1二取像 Μ為-待檢測軟性印刷電路fell提供昭明’，、為，用 的照明，該照明系統101具有至少兩個光源5'、ϋ充份 :個光源5會分別連接至少兩條光 =寺至少 光纖6投向該待檢測軟性;^= 11 ’该照明系統101進-步包括至少 P 路板 別連接至該等至少兩條光纖6，該等聚光構件f = 8，分 光纖輪出端7處， 電路板^上：取像模請，其係固 7 1282409 性印刷電路板的上方，用 11的光學影像，該取像模^檢測軟性印刷電路板 設一取像鏡頭2,因為待於 /、有一相機1，其前方裝 會黏著-保護膜而產生極^的^印==板的表面通常 光，該取像鏡頭2前方合梦一 ”，w慮除此不必要的反 的光線，從而改良該取ϋ又2鏡3 ’用以據除不必要 一移動平台1〇3，且所取得之影像的品質； 印刷，綱檢測軟性 Ξ動平台103產生不必要的反二=’不為反避光免/ 的# 私動平纟103上的待檢測軟性印刷電路板n 解^二f會於檢測期間折簸而使其表面變得不平整。為 題’在該移動平台103的表面上會設置複數個透 i彳圖未示）’藉由一真空吸附裝置（圖未示）透過該等複 口透氣孔來吸附該待檢測軟性印刷電路板n，便可將 位於孩私動平台1〇3上的待檢測軟性印刷電路板11平坦 貼附至該移動平台103表面，從而讓取像模組1〇2可獲得 良子口口貝的衫像’改良檢測的效果。上述透氣孔與真空吸 附裝置均屬一般技術，不另贅述。 於本發明的較佳實施例中，本發明之照明系統1(η 的至少兩條投光路徑9對稱於該取像鏡頭2之光軸4且會 以一預設夾角1〇對該待檢測軟性印刷電路板U進行投 光。較佳地，該預設夾角10介於20度與30度之間；最 佳地，該預設夾角10為25度。 於本發明的較佳實施例中，該等至少兩個光源5包 1282409 括任何形狀且可發出任何可見光線的光源，該等至少雨 個光源5係白光光源。 於本發明的較佳實施例中，該等至少兩個聚光構件 8係柱狀聚焦透鏡。 於本發明的較佳實施例中，該取像模組中的相機為線 型CCD相機。 、於本發明的較佳實施例中，該取像模組中的濾鏡3 為紅色滤、鏡。 φ 於本發明的較佳實施例中，該取像鏡頭2係一焦距為 80mm而光圈為F56的定焦取像鏡頭。 、於本發明的較佳實施例中，該移動平台103係於水 平方向中移動’且其移動方向垂直於該取像鏡頭2之光 轴。 於本發明的較佳實施例中，為對該移動平台103預 作不反光處理，可於其上塗敷一層黑色塗料。 以上所述僅為本發明之實施例，並非用以限定本發 明之=請專利範圍；凡其它未脫離本發明所揭示之精神 _ 下所70成之等效改變或修飾，均應包含在下述之申請真 利範圍内。 k τ月寻 1282409 【圖式簡單說明】 第一圖係根據本發明實施例的影像擷取系統架構。Preferably, the image taking lens is a fixed focus lens having a focal length of 8 〇 mm. 1282409 and at least two concentrating members respectively connected to the at least two optical fibers; an image capturing module for obtaining an optical image of the flexible printed circuit board to be detected, having a camera and a camera mounted thereon a front taking image lens and a filter mounted in front of the image capturing lens, the image capturing module is fixed on the soft printed circuit board to be detected; and a moving platform on which the object is placed Detecting a flexible printed circuit board for moving the flexible printed circuit board to be inspected, the surface of the moving platform is pre-processed without reflection and providing a plurality of vent holes on the surface of the moving flat surface, through a vacuum adsorption device A venting hole flatly attaches the soft printed circuit board to be tested on the moving platform to the surface of the moving platform for detection. σ Further preferably, the at least two light sources in the illumination system are white light sources. Preferably, the at least two concentrating structures in the illumination system are respectively connected to the rounded ends of the at least two optical fibers. Preferably, the at least two concentrating cylindrical focusing lenses in the illumination system.车 The father of the car, at least two light projecting paths of the illumination system take the optical axis of the image capturing lens and project the soft printed circuit board to be detected at a preset angle. Preferably, the predetermined angles are between 20 and 3 degrees. Preferably, the preferred angle of the predetermined corners is 25 degrees. Preferably, the camera in the image capturing module is a line type (:1:> preferably, the filter in the image capturing module is a red filter, a mirror. * and the aperture is F5.6 1282409 The movable platform can be programmed to move, so that the image can be swept to the copper. The scanning light of the soft printed circuit board above 75 micrometers = the moving direction of the ground private platform is perpendicular to the image capturing mobile platform. Pre-made non-reflective treatment, the problems of the [Embodiment] and other problems can be applied thereto. The drawings of the embodiments are described, but those who have the preferred technology of the invention read and understand the τ face day ^ (4) The same effect can be obtained by the familiarity. The ρ can modify the present invention, and the first figure is the same according to the present invention: the inspection: the image capturing system (referred to as the image manipulation system; The method includes: -) a wood structure module 102; and - a mobile platform 103, wherein: the illumination system 1 is a picture-to-be-detected flexible printed circuit fell providing illumination, the illumination system 101 has At least two light sources 5', ϋ 份: one light source 5 will be connected to at least two lights respectively = At least the optical fiber 6 is directed to the softness to be detected; ^=11' the illumination system 101 further comprises at least a P-plane connected to the at least two optical fibers 6, the concentrating members f = 8, the sub-fiber round-out 7 places, on the circuit board ^: take the image, please fasten the top of the 7 1282409 printed circuit board, use 11 optical image, the image capture mode ^ detect the flexible printed circuit board set up an image lens 2, because In /, there is a camera 1, the front of it will be attached to the protective film to produce the extreme ^ ^ = = = the surface of the board is usually light, the image of the lens 2 in front of a dream, "when necessary to eliminate this unnecessary The light, thereby improving the pick-up and the 2 mirror 3', is used to eliminate the unnecessary movement of the platform 1〇3, and the quality of the image obtained; the printing, the detection of the soft tilting platform 103 produces unnecessary anti-two = ' The soft printed circuit board to be detected on the #私动平纟103, which is not anti-avoidance/free, will be folded during the detection to make the surface uneven. The title is 'on the mobile platform 103. a plurality of transparent images (not shown) may be disposed on the surface of the liquid through a vacuum adsorption device (not shown) The transparent flexible printed circuit board 11 on the child's private platform 1〇3 can be flatly attached to the surface of the mobile platform 103, so that the image can be taken. The module 1〇2 can obtain the effect of improving the detection of the shirt image of the good mouth mouth. The above-mentioned venting holes and vacuum adsorption devices are common technologies, and are not further described. In a preferred embodiment of the invention, the illumination of the invention The system 1 (at least two light projecting paths 9 of η are symmetric with respect to the optical axis 4 of the image taking lens 2 and project the flexible printed circuit board U to be detected at a predetermined angle of 1 。. Preferably, the The preset angle 10 is between 20 degrees and 30 degrees; optimally, the preset angle 10 is 25 degrees. In a preferred embodiment of the invention, the at least two light sources 5 include 1282409 including any shape and emit any visible light source, and at least the rain source 5 is a white light source. In a preferred embodiment of the invention, the at least two concentrating members 8 are cylindrical focusing lenses. In a preferred embodiment of the invention, the camera in the image capture module is a linear CCD camera. In the preferred embodiment of the present invention, the filter 3 in the image capturing module is a red filter and a mirror. φ In the preferred embodiment of the present invention, the image taking lens 2 is a fixed focus lens having a focal length of 80 mm and an aperture of F56. In the preferred embodiment of the present invention, the moving platform 103 is moved in the horizontal direction and its moving direction is perpendicular to the optical axis of the taking lens 2. In a preferred embodiment of the invention, a layer of black paint may be applied to the mobile platform 103 prior to non-reflective processing. The above is only the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes or modifications of the above 70% without departing from the spirit of the present invention should be included in the following. The application is within the real range. k τ月寻 1282409 [Simplified Schematic] The first figure is an image capturing system architecture according to an embodiment of the present invention.
[主要元件符號說明] 1 相機 2 鏡頭 3 濾鏡 4 光轴 5 光源 6 光纖 7 光纖輸出端 8 聚光構件 9 投光路徑 10 夾角 11 軟性印刷電路板 100 影像擷取系統 101 照明系統 102 取像模組 103 移動平台[Main component symbol description] 1 Camera 2 Lens 3 Filter 4 Optical axis 5 Light source 6 Optical fiber 7 Optical fiber output terminal 8 Concentrating member 9 Projection path 10 Angle 11 Flexible printed circuit board 100 Image capturing system 101 Lighting system 102 Image capturing Module 103 mobile platform