M328164 八、新型說明： 【新型所屬之技術領域】 本創作係有關一種印刷電路板的自動光學影像檢測系統，特別是 一種應用於軟性印刷電路板之自動光學影像檢測系統。 【先前技術】 習知印刷電路板(PCB)或軟性印刷電路板（FPC)之自動光學影像檢 測系統(AOI)的技術發展已久，且有多家相關的自動光學影像檢測系統儀 器製造商製作出多種不同的檢測機臺。一般印刷電路板或軟性印刷電路板 通常會在表面貼上一層保護膜，用現有的自動光學影像檢測系統檢測時， 會因為印刷電路板或軟性印刷電路板貼附之保護膜，產生反光或受測表面 不平整的影響，導致取得的影像不佳。 一般光學影像檢測系統用於檢測印刷電路板或軟性印刷電路板其結 構包含取像系統及軟體演算系統，先由取像系統取得高對比的影像後，經 由軟體演算法偵測缺陷的位置及大小，再判斷缺陷的種類。第i圖所示為 習知軟性印刷電路板之自動光學影像檢測系統。其自動光學影像檢測系統 包含籠形結構20、滚輪3〇、燈具40及攝影機5〇，其中籠形結構20用於 整2軟性印刷電路板10且該籠形結構2〇係設於自動光學影像檢測系統的 適當部位；若進行檢測軟性印刷電路板10，其軟性印刷電路板10會隨著 滾輪30傳送經由該籠形結構20予以整平，而多個燈具40則位於籠形結 ，2〇内部適當位置，前述燈具40之光源穿過籠形結構20的間隙照射欲 檢測之軟性印刷電路1〇即可適時配合各攝影機％進行連續取像的檢測 作業。 然而’上述之自動光學影像檢測系統，其籠形結構20及攝影機50 所伯的體積過大’而攝影機％使賴數量過多會造成製作、調整及維修 成本的支曰加，另一方面，籠形結構20雜整平軟性印刷電路板10增加檢 5 M328164 測品質，但對於一般印刷電路板或軟性印刷電路板表面之保護膜反光的問 題無法有效改善而影響檢測的效果。 【新型内容】 為了解決上述問題，本創作印刷電路板之自動光學影像檢測系統 係利用自動光學影像檢測系統之若干裝置的排列組合以減少受測物 表面反光的干擾進而增進檢測品質。 本創作另一目的係利用印刷電路板之自動光學影像檢測系統若 干裝置的排列組合以減少習知自動光學影像檢測系統的體積。 為了達到上述目的，本創作一實施例印刷電路板之自動光學影 像檢測系統，包含：多個取像裝置設置於立板上，其中取像裝置包括多個 線性取像元件，將一影像由一光訊號轉換成一電子訊號；多個鏡頭設置於 線性取像元件刖方用以定焦取得一影像；及多個濾光片係設置於鏡頭前方 用以過濾反射光；多個照明裝置係對稱設置於一固定座上，而固定座係連 接立板上，其中多個照明裝置包含：至少一光源係連接具有線型之光纖之 輸入端；及多個透鏡具有柱狀之結構分別連接線型之光纖之輸出端；及一 移動平臺設置於照明裝置之下方用以固定印刷電路板；其中多個透鏡及多 個鏡頭分別形成第一光轴及第二光轴，而第一光軸對稱設置形成一夾角4〇 度至60度投光於印刷電路板且第一光軸之夾角的中點係為鏡頭的第二光 轴，而第二光軸垂直於移動平臺用以取像於印刷電路板。 【實施方式】 第2圖所示為本創作一實施例印刷電路板之自動光學影像檢測 系統方塊圖。於本實施例中，自動光學影像檢測系統包括取像裴置 100、照明裝置200、210、移動平臺3〇〇及控制器400，其中照明裝置2〇〇、 210其係對稱設置於取像裝置100之兩側，而取像裝置1〇〇係設置於移動 6 M328164 平臺300上方用以攝取影像；此外，取像裝置100、照明裝置200、210 及移動平臺300乃分別透過控制線410、420、430、440連接控制器400 ; 電源供應器500係提供電力至控制器4〇〇用以產生控制訊號，進而驅動取 像裝置100、照明裝置200、210、移動平臺300及控制器400的作動；其 中，控制器400係為可程式控制器(PLC)或電腦，用以控制該自動光學檢 測系統。 本實施例中，取像裝置1〇〇包含線性取像元件110、鏡頭12〇及濾 光片130,而對稱之照明裝置2〇〇、210分別包含光源220、230及具有柱 狀之透鏡240、250，其中取像裝置100之線性取像元件no係將感測影像 由光訊號轉換成電子訊號，而鏡頭120設置於線性取像元件11〇前方以定 焦取得影像；此外，濾光片130設置於鏡頭120前方用以過濾光線。照明 裝置200、210係利用線型之光纖(圖中未示)用以傳導光源220、230 ;又， 光源220、230輸出端分別設置柱狀之透鏡24〇、25〇，藉以聚光投射於印 刷電路板(圖中未示)的表面。 接續上述，係說明本創作成像之原理，照明裝置2〇〇、21〇前 方柱狀之透鏡240、250經聚光後，其柱狀之透鏡240、250的光軸(圖中 未示)夾角呈40度至60度之間，對稱投光於印刷電路板，而線性取像元 件110之鏡頭120前端設置濾、光片130 ;另一方面，移動平臺3〇〇設置多 個貫穿移動平臺300的穿孔(圖中未示），利用真空裝置31〇連接移動平臺 3〇〇的穿孔，將產生的真空用以吸附移動平臺3〇〇上的印刷電路板(圖中未 不）；又，移動平臺300表面設置一黑色不反光層（圖中未示)處理以減少反 光產生，因此，本創作經由上述若干裝置組成後可取得如印刷電路板之銅 箔線路的清晰影像並可進行印刷電路板之缺陷自動檢測。 第3圖、第4圖及第5圖所示分別為本創作另一實施例印刷 電路板之自動光學影像檢測系統正視圖、俯視圖及側視圖。於本實施 例中，自動光學影像檢測系統包括取像裝置6〇〇、61〇、照明裝置7〇〇、 710、720、730及移動平臺800，其中照明裝置7〇〇、71〇、72〇、73〇係固 設於固定架740，而取像裝置_、61G係利用一固定座_固設於立板 7 M328164 900上用以攝取影像，而取像裝置600、610的第一光軸Ll、L2係垂直於 移動平臺800 ;此外，移動平臺8〇〇係設置於照明裝置7〇〇、71〇、72〇、 730之下方，進行X軸及γ軸方向的線性移動。 接續上述，取像裝置6〇〇、610分別包含線性取像元件620、630、 鏡頭640'650及濾光片660、670 ;其中，線性取像元件620、630係將一 影像由一光訊號轉換成一電子訊號，而鏡頭640、650係與連接線性取像 70件620、630，用以定焦取得一影像；此外，濾光片660、670分別設置 於鏡頭640、650前方用以過濾光線。本實施例中，照明裝置7〇〇、71〇、 720、730包含柱狀之透鏡(圖中未示)及光源(圖中未示），而具有柱狀的透 鏡連接線型之光纖(圖中未示)之一輸出端；又，照明裝置7〇〇、71〇與照明 裝置720、730係對稱設置於固定架74〇，而照明裝置72〇、73〇其柱狀之 透鏡分別具有第一光轴Ll、L2 ;取像裝置600、010之鏡頭040、650分 別具有第二光軸L3、L4，其中，第一光轴Ll、L2形成夾角0從40度至 60度的範圍内，對稱投光於印刷電路板或軟性印刷電路板(圖中未示其照 明裝置7〇〇、71〇之第一光軸乙1、1^2)且第一光軸〇、1^2之夾角0的中點 係為鏡頭640、650之第二光軸L3、L4係垂直於移動平臺800。 請續參第3圖及第5圖所示，本實施例中印刷電路板之自動光學影 像檢測系統另設置一紅綠藍取像元件680固設於立板上，當取像裝置 600、610偵測印刷電路板的缺陷時，需要進行判斷印刷電路板缺陷的種類 時，紅綠藍取像元件680係產生彩色之影像藉以進行印刷電路板缺陷的判 斷，進一步釐清缺陷的種類。此外，本創作之線性取像元件62〇、63〇係 為一電荷耦合元件(CCD)，或其他能攝取影像之線性取像元件，而印刷電 路板係為貼附保護膜之軟性印刷電路板或塗有綠漆之印刷電路板。 根據本創作之精神，取像裝置係利用線性取像元件裝置鏡頭取 像，並於鏡頭前端設置濾光片；移動平臺係設置有多個穿孔，貫穿移動平 臺並利用真空吸附裝置將平臺上的印刷電路板試片吸平，且移動平臺表面 設置一黑色不反光層處理以減少反光的產生；而對稱的照明裝置分別具有 光源及柱狀之透鏡，其中光源係以線型的光纖傳導，光源輸出端前方柱狀 8 M328164 的透鏡用以聚光於印刷電路板上。因此本創作係可應用於取得高對比的軟 性印刷電路板令的銅箔線路影像，並可用來作缺陷檢測；軟性印刷電路板 檢驗的規格為單面印刷且線寬/線距在3 mil(75um)以上。若當印刷電路板 塗有綠漆則線性取像元件所使用的濾光片需更換為綠色的濾光片，而欲檢 驗軟性印刷電路板則濾光片可更換使用紅色層膜的濾光片；換言之，本創 作線性取像元件的濾光片係與待測之印刷電路板的顏色一致以攝取最佳 的檢驗影像。 第6圖所示為本創作又一實施例印刷電路板之自動光學影像檢 測系統示意圖。本創作係與第3圖相同，僅具有單一之取像裝置 690 ’而本創作係適用於檢測小面積的印刷電路板或檢測特定區域 之印刷電路板；再者，本實施例之自動光學影像檢測系統可應用於檢 測其它易反光之材質；此外，自動光學影像檢測系統可以減少不必要的 體積及節省使用空間。 以上所述之實施例僅係為說明本創作之技術思想及特點，其 目的在使熟習此項技藝之人士能夠瞭解本創作之内容並據以實 施’當不能以之限定本創作之專利範圍，即大凡依本創作所揭示 之精神所作之均等變化或修飾，仍應涵蓋在本創作之專利範圍 内0 【圖式簡單說明】 第1圖所示為習知軟性印刷電路板之自動光學影像檢測系統。 第2圖所示為本創作一實施例印刷電路板之自動光學影像檢測系統 方塊圖。 第3圖所示為根據本創作另一實施例印刷電路板之自動光學影像檢 測系統正視圖。 第4圖所不為根據本創作另一實施例印刷電路板之自動光學影像檢 9 M328164 測系統側視圖。 第5圖所示為根據本創作另一實施例印刷電路板之自動光學影像檢 測系統俯視圖。 第6圖所示為根據本創作又一實施例印刷電路板之自動光學影像檢 測系統示意圖。M328164 VIII. New Description: [New Technology Field] This creation is about an automatic optical image detection system for printed circuit boards, especially an automatic optical image detection system applied to flexible printed circuit boards. [Prior Art] The technology of the automatic optical image inspection system (AOI) of the printed circuit board (PCB) or the flexible printed circuit board (FPC) has been developed for a long time, and has been produced by a number of related automatic optical image detection system instrument manufacturers. A variety of different inspection machines. Generally, a printed circuit board or a flexible printed circuit board usually has a protective film on the surface. When it is detected by the existing automatic optical image detecting system, it may be reflected or affected by the protective film attached to the printed circuit board or the flexible printed circuit board. Measuring the effects of surface irregularities results in poor image quality. The general optical image detecting system is used for detecting a printed circuit board or a flexible printed circuit board. The structure thereof comprises an image capturing system and a software calculation system. After obtaining a high contrast image by the image capturing system, the position and size of the defect are detected by a software algorithm. Then judge the type of defect. Figure i shows an automated optical image detection system for a conventional flexible printed circuit board. The automatic optical image detecting system comprises a cage structure 20, a roller 3〇, a lamp 40 and a camera 5〇, wherein the cage structure 20 is used for the whole 2 flexible printed circuit board 10 and the cage structure 2 is attached to the automatic optical image. Detecting the appropriate portion of the system; if the flexible printed circuit board 10 is tested, the flexible printed circuit board 10 will be leveled as the roller 30 is transported through the cage structure 20, and the plurality of lamps 40 are located in the cage, 2〇 When the light source of the lamp 40 is irradiated through the gap of the cage structure 20 to illuminate the soft printed circuit 1 to be detected, the camera can perform the continuous image capturing operation in accordance with each camera%. However, the above-mentioned automatic optical image detecting system has a cage structure 20 and a large volume of the camera 50, and the camera% makes the amount of the camera too large, which causes the manufacturing, adjustment and maintenance costs to be increased. On the other hand, the cage shape Structure 20 Miscellaneous Flat Flexible Printed Circuit Board 10 increases the quality of inspection 5 M328164, but the problem of reflective film on the surface of a general printed circuit board or a flexible printed circuit board cannot be effectively improved and affects the detection effect. [New content] In order to solve the above problems, the automatic optical image detecting system of the present printed circuit board utilizes the arrangement and combination of several devices of the automatic optical image detecting system to reduce the interference of the surface reflection of the object to be tested and thereby improve the detection quality. Another object of the present invention is to reduce the volume of conventional automated optical image detection systems by using an array of automated optical image detection systems for printed circuit boards. In order to achieve the above object, an automatic optical image detecting system for a printed circuit board according to an embodiment of the present invention includes: a plurality of image capturing devices disposed on a vertical plate, wherein the image capturing device includes a plurality of linear image capturing components, and one image is The optical signal is converted into an electronic signal; a plurality of lenses are disposed on the linear image capturing component for focusing to obtain an image; and a plurality of filters are disposed in front of the lens for filtering the reflected light; and the plurality of lighting devices are symmetrically disposed. And a fixed seat is connected to the vertical plate, wherein the plurality of illumination devices comprise: at least one light source is connected to the input end of the optical fiber having a line type; and the plurality of lenses have a columnar structure respectively connected to the optical fiber of the line type An output end; and a mobile platform disposed under the illumination device for fixing the printed circuit board; wherein the plurality of lenses and the plurality of lenses respectively form the first optical axis and the second optical axis, and the first optical axis is symmetrically disposed to form an angle 4 to 60 degrees of light projection on the printed circuit board and the midpoint of the angle between the first optical axes is the second optical axis of the lens, and the second optical axis is perpendicular to the mobile platform Take on a printed circuit board. [Embodiment] Fig. 2 is a block diagram showing an automatic optical image detecting system of a printed circuit board according to an embodiment of the present invention. In this embodiment, the automatic optical image detecting system includes an image capturing device 100, illumination devices 200, 210, a mobile platform 3A, and a controller 400, wherein the illumination devices 2, 210 are symmetrically disposed on the image capturing device. The image capturing device 1 is disposed above the mobile 6 M328164 platform 300 for capturing images; and the image capturing device 100, the lighting device 200, 210, and the mobile platform 300 are respectively transmitted through the control lines 410 and 420. , 430, 440 are connected to the controller 400; the power supply 500 provides power to the controller 4 for generating a control signal, thereby driving the operation of the image capturing device 100, the lighting device 200, 210, the mobile platform 300, and the controller 400. The controller 400 is a programmable controller (PLC) or a computer for controlling the automatic optical detection system. In this embodiment, the image capturing device 1A includes a linear image capturing component 110, a lens 12A, and a filter 130, and the symmetrical lighting devices 2, 210 include a light source 220, 230 and a columnar lens 240, respectively. 250, wherein the linear image capturing component no of the image capturing device 100 converts the sensing image into an electronic signal by the optical signal, and the lens 120 is disposed in front of the linear image capturing component 11 to obtain an image by focusing; and further, the filter 130 is disposed in front of the lens 120 for filtering light. The illuminating devices 200 and 210 use a linear optical fiber (not shown) for conducting the light sources 220 and 230. Further, the output ends of the light sources 220 and 230 are respectively provided with columnar lenses 24 〇 and 25 〇 for collecting and projecting on the printing. The surface of the board (not shown). Following the above, the principle of the present imaging is explained. The angles of the optical axes (not shown) of the cylindrical lenses 240 and 250 after the illuminating device 2〇〇, 21〇 front cylindrical lenses 240 and 250 are condensed. Between 40 degrees and 60 degrees, the light is symmetrically projected on the printed circuit board, and the front end of the lens 120 of the linear image capturing component 110 is provided with a filter and a light sheet 130. On the other hand, the mobile platform 3 is provided with a plurality of through moving platforms 300. Perforation (not shown), using a vacuum device 31〇 to connect the perforations of the mobile platform 3〇〇, and the generated vacuum is used to adsorb the printed circuit board on the mobile platform 3〇〇 (not shown); A black non-reflective layer (not shown) is disposed on the surface of the platform 300 to reduce the occurrence of reflection. Therefore, the present invention can form a clear image of a copper foil line such as a printed circuit board and can perform a printed circuit board through the above-mentioned several devices. The defect is automatically detected. 3, 4, and 5 are respectively a front view, a plan view, and a side view of an automatic optical image detecting system of a printed circuit board according to another embodiment of the present invention. In the embodiment, the automatic optical image detecting system includes the image capturing device 6〇〇, 61〇, the lighting device 7〇〇, 710, 720, 730 and the moving platform 800, wherein the lighting device 7〇〇, 71〇, 72〇 The 73 〇 system is fixed to the fixing frame 740, and the image taking device _, 61G is fixed to the vertical plate 7 M328164 900 by a fixing seat _ for capturing images, and the first optical axis of the image capturing device 600, 610 L1 and L2 are perpendicular to the moving platform 800. Further, the moving platform 8 is disposed below the illumination devices 7A, 71A, 72B, and 730, and linearly moves in the X-axis and γ-axis directions. In the above, the image capturing devices 6A and 610 respectively include linear image capturing elements 620 and 630, a lens 640'650, and filters 660 and 670. The linear image capturing elements 620 and 630 respectively use an image by an optical signal. Converted into an electronic signal, and the lens 640, 650 is connected with the linear image 70 pieces 620, 630 for focusing to obtain an image; in addition, the filters 660, 670 are respectively disposed in front of the lens 640, 650 for filtering light . In this embodiment, the illumination devices 7A, 71A, 720, and 730 include a columnar lens (not shown) and a light source (not shown), and have a columnar lens connection type fiber (in the figure) One of the output terminals is not shown; further, the illumination devices 7A, 71A and the illumination devices 720, 730 are symmetrically disposed on the fixed frame 74A, and the illumination devices 72, 73, and their columnar lenses respectively have the first The optical axes L1, L2; the lenses 040, 650 of the image capturing devices 600, 010 respectively have second optical axes L3, L4, wherein the first optical axes L1, L2 form an angle of 0 from 40 degrees to 60 degrees, symmetrical Projecting on a printed circuit board or a flexible printed circuit board (the first optical axis B1, 1^2 of the illumination device 7〇〇, 71〇 is not shown) and the angle between the first optical axis 1 and 1^2 is 0. The midpoint of the second optical axes L3, L4 of the lenses 640, 650 is perpendicular to the mobile platform 800. Referring to FIG. 3 and FIG. 5, in the embodiment, the automatic optical image detecting system of the printed circuit board is further provided with a red, green and blue image capturing component 680 fixed on the vertical plate, and the image capturing device 600 and 610. When detecting a defect in a printed circuit board, when it is necessary to determine the type of defect of the printed circuit board, the red, green, and blue image capturing element 680 generates a color image to judge the defect of the printed circuit board, and further clarifies the type of the defect. In addition, the linear image capturing elements 62〇, 63〇 of the present invention are a charge coupled device (CCD), or other linear image capturing device capable of taking images, and the printed circuit board is a flexible printed circuit board with a protective film attached thereto. Or printed circuit boards coated with green paint. According to the spirit of the present invention, the image taking device adopts a linear image capturing device device to take a lens, and a filter is arranged at the front end of the lens; the mobile platform is provided with a plurality of perforations, runs through the mobile platform and uses a vacuum adsorption device to The test piece of the printed circuit board is flat, and a black non-reflective layer is disposed on the surface of the moving platform to reduce the generation of reflection; and the symmetrical illumination device respectively has a light source and a columnar lens, wherein the light source is guided by a linear optical fiber, and the light source is output. The lens of the front column 8 M328164 is used to condense on the printed circuit board. Therefore, this creation can be applied to the copper foil line image of the high-contrast flexible printed circuit board, and can be used for defect detection; the flexible printed circuit board inspection specifications are single-sided printing and the line width/line spacing is 3 mil ( 75um) or more. If the printed circuit board is coated with green paint, the filter used for the linear image taking component needs to be replaced with a green filter, and if the flexible printed circuit board is to be tested, the filter can be replaced with a filter with a red film. In other words, the filter of the linear imaging element of the present invention is consistent with the color of the printed circuit board to be inspected to take the best inspection image. Fig. 6 is a schematic view showing an automatic optical image detecting system of a printed circuit board according to still another embodiment of the present invention. This creation is the same as that of Fig. 3, and has only a single image taking device 690'. The present invention is suitable for detecting a small area printed circuit board or a printed circuit board for detecting a specific area; further, the automatic optical image of the embodiment The inspection system can be used to detect other materials that are easy to reflect; in addition, the automatic optical image detection system can reduce unnecessary volume and save space. The embodiments described above are merely illustrative of the technical spirit and characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the 'when the scope of the patent cannot be limited by this, That is, the equivalent changes or modifications made by the spirit of this creation should still be covered by the scope of this patent. 0 [Simple description of the drawing] Figure 1 shows the automatic optical image detection of the conventional flexible printed circuit board. system. Fig. 2 is a block diagram showing an automatic optical image detecting system of a printed circuit board according to an embodiment of the present invention. Figure 3 is a front elevational view of an automated optical image sensing system for a printed circuit board in accordance with another embodiment of the present invention. Figure 4 is a side view of an automated optical image inspection of a printed circuit board according to another embodiment of the present invention. Fig. 5 is a plan view showing an automatic optical image detecting system of a printed circuit board according to another embodiment of the present invention. Fig. 6 is a view showing an automatic optical image detecting system of a printed circuit board according to still another embodiment of the present invention.
【主要元件符號說明】 10 軟性印刷電路板 20 籠形結構 30 滾輪 40 燈具 50 攝影機 100 取像裝置 110 線性取像元件 120 鏡頭 130 濾光片 200、210 照明裝置 220、230 光源 240、250 透鏡 300 移動平臺 310 真空裝置 400 控制器 410、420、430、440 控制線 500 電源 600、610 取像裝置 620、630 線性取像元件 640 、 650 鏡頭 M328164 660 、 670 濾光片 680 紅綠藍取像元件 690 取像裝置 700、710、720、730 照明裝置 740 固定架 800 移動平臺 900 立板 910 固定座 U、L2 第一光軸 L3、L4 第二光軸 Θ 第一光軸夾角 11[Main component symbol description] 10 Flexible printed circuit board 20 Cage structure 30 Roller 40 Lamp 50 Camera 100 Image capturing device 110 Linear image capturing device 120 Lens 130 Filter 200, 210 Lighting device 220, 230 Light source 240, 250 Lens 300 Mobile platform 310 Vacuum device 400 Controller 410, 420, 430, 440 Control line 500 Power supply 600, 610 Image capture device 620, 630 Linear image capture component 640, 650 Lens M328164 660, 670 Filter 680 Red green blue image capture component 690 image taking device 700, 710, 720, 730 lighting device 740 fixing frame 800 moving platform 900 vertical plate 910 fixing seat U, L2 first optical axis L3, L4 second optical axis Θ first optical axis angle 11