13〇6165 九、發明說明： 【發明所屬之技術領域】 本發明係關於-種可調式光源裝置及具可調式光源裝置 之自動光學檢測系'统，特別係關於-種能產生多角度及多 色度投射光之可調式光源裝置’該多角度及多色度投射光 可用來照明待檢測物。 【先前技術】 • 印刷電路板是電子、電腦及通信等產品之主要零組件， 為能因應消費市場上輕、薄、短、小之產品特性，及在高 密度及高可靠性的需求催化下，高階印刷電路板在目前的 电展趨勢已大夕使用盲孔（bhnd h()le或_)及埋孔（5如^ hole)之技術。該種盲孔及埋孔之印刷電路板，是藉由盲孔 將内部幾層之佈線板與表面之佈線連接，不須穿透整個板 子而浪費其他層佈線板之佈局空間，預估可較一般印刷電 路板之體積縮小20%。因此對電路板而言，無論是半成品 ，或成品之品質檢測工作都變的非常重要，特別是關於線 寬、孔徑、孔垂直度、孔真圓度及銅墊尺寸等都需要進行 量測及規格判讀。然本發明並不限於印刷電路板之鑽孔尺 寸之量測之應用，及以下習知技術描述之侷限，其他待檢 測物上目標件之尺寸量測及品質判別均為本發明之應用範 圍，例如檢測晶圓（wafer)上的錫球凸塊或基材之缺陷辨識。 圖1係習知綜型掃描視覺檢測系統之外觀示意圖。視覺檢 測系統10包含一可置放待檢測物（例如印刷電路板8〇)之固 定平臺90、一產生照射待檢測物光線之光源裝置丨7及—操 f M34288-113357 005672794 .5 - / 1306165 取待檢測物影像之視覺取像模組18，照射於印刷電路板8〇 之光線有部分被反射至視覺取像模組18内而形成影像。一 般視覺取像模組18至少包括收集反射光線之倍率鏡頭14， 及將光學訊號轉換為電氣訊號之訊號接收器16。又光源裝 置17之兩投射光源丨2分別會產生兩道對稱於印刷電路板8 〇 之投射光線，並於印刷電路板80之表面或鑽孔82形成一聚 焦光線84。為能改變該兩道投射光線之投射角度，可萨由 移動兩投射光源12於調整角度支架12〇上之固定位置或角 度而達成。 雖然藉由該調整角度支架120可改變投射光源12產生光 線之投射角度，然該投射角度之變換範圍相當有限而無法 /月楚照射某些鑽孔82 ’很容易受板面不平整（粗糙）而影燮取 像品質。投射光源之角度愈垂直，愈易受到受測物表面粗 棱而影響，因此造成明暗交錯之不佳影像。然角度愈水平， 又會因凹陷部分而無法產生反光之困境。圖2係投射光源12 產生光線照射雷射鑽孔内部之示意圖。由於部份光線IB進 行之方向恰好被鑽孔82之上緣或印刷電路板8〇粗糙表面所 阻擋，因此有相當部分之孔内壁821會因為受光不足而無法 反射足夠之光線121 ’從而造成視覺取像模組18接受到無法 开> 成正確鑽孔82影像之反射光線。若每次改變投射光源12 之固定角度以適應不同狀況都需要停機而以機械方式調 整。另外，印刷電路板80之表面顏色與光線121之色度亦會 影響鑽孔82之清晰成像，然習知視覺檢測系統1〇並無法針 對待檢測物之色彩特性而給予最佳化之投射光線。例如，13〇6165 IX. Description of the Invention: [Technical Field] The present invention relates to an adjustable light source device and an automatic optical detection system with an adjustable light source device, in particular, The illuminating light-adjustable light source device 'the multi-angle and multi-color projection light can be used to illuminate the object to be detected. [Prior Art] • Printed circuit boards are the main components of products such as electronics, computers, and communications. They are designed to meet the needs of light, thin, short, and small products in the consumer market, and under the catalysis of high density and high reliability. High-end printed circuit boards have used blind holes (bhnd h()le or _) and buried holes (5 such as ^ hole) technology in the current trend of electric show. The printed circuit board of the blind hole and the buried hole is connected with the wiring of the inner layer by the blind hole, and the layout space of the other layer wiring board is wasted without penetrating the entire board, and the estimated space can be compared. The size of a typical printed circuit board is reduced by 20%. Therefore, for the circuit board, whether it is a semi-finished product, or the quality inspection of the finished product becomes very important, especially regarding the line width, aperture, hole verticality, hole roundness and copper pad size, etc. Specification interpretation. However, the present invention is not limited to the application of the measurement of the drilling size of the printed circuit board, and the limitations of the following prior art descriptions. The size measurement and quality discrimination of the target member on other objects to be detected are all applicable to the scope of the present invention. For example, detecting the defect identification of a solder ball bump or a substrate on a wafer. Fig. 1 is a schematic view showing the appearance of a conventional scanning type visual inspection system. The visual inspection system 10 includes a fixed platform 90 on which a to-be-detected object (for example, a printed circuit board 8A) can be placed, a light source device 产生7 that generates light to illuminate the object to be detected, and a f M34288-113357 005672794 .5 - / 1306165 The visual image capturing module 18 that takes the image of the detected object, and the light that is irradiated on the printed circuit board 8 is partially reflected into the visual image capturing module 18 to form an image. The general vision imaging module 18 includes at least a magnification lens 14 for collecting reflected light and a signal receiver 16 for converting optical signals into electrical signals. The two projection light sources 丨2 of the light source device 17 respectively generate two projected rays symmetrical to the printed circuit board 8 and form a focused ray 84 on the surface of the printed circuit board 80 or the bore 82. In order to be able to change the projection angle of the two projected rays, the effect is achieved by moving the two projection light sources 12 at a fixed position or angle on the adjustment angle bracket 12. Although the angle of projection of the light generated by the projection light source 12 can be changed by the adjustment angle bracket 120, the range of conversion of the projection angle is rather limited and it is impossible to illuminate some of the drill holes 82' which is easily affected by unevenness of the board surface (rough). And the image quality. The more vertical the angle of the projection light source is, the more susceptible it is to the rough edges of the surface of the object to be measured, thus causing poor images of light and dark interlacing. However, the more horizontal the angle, the more difficult it is to cause reflection due to the concave portion. Figure 2 is a schematic illustration of the projection source 12 generating light to illuminate the interior of the laser bore. Since the direction of the partial light IB is exactly blocked by the upper edge of the drilled hole 82 or the rough surface of the printed circuit board 8, a considerable portion of the inner wall 821 of the hole may not reflect enough light 121' due to insufficient light to cause vision. The image capturing module 18 receives the reflected light that cannot be turned on and is correctly imaged by the borehole 82. If the fixed angle of the projection source 12 is changed each time to adapt to different conditions, it is necessary to stop and mechanically adjust. In addition, the surface color of the printed circuit board 80 and the chromaticity of the light ray 121 also affect the clear imaging of the drilled hole 82. However, it is known that the visual inspection system 1 无法 cannot optimize the projected light for the color characteristics of the object to be detected. . E.g,
Μ34288-113357 005672794 1306165 Λ d物上里測目標與背景（板面）之區域雖顏色不同但灰 度值（gray level)㈣，則會造成量測目標與背景在-般線 性知描（hne scan)攝影機中成像無法有效鑑別。 綜上所述，市;^ μ τ $ π 、 亟碎要一種能夠有效調整光源投射方 向兼顧光線色度之自動光學檢測系統，藉此可以確認印刷 電路板及其各疊層板材等待檢測物之品質。 【發明内容】 本發明之目的係提供—種可調式光源裝置及具可調式光 源裝置之自動光學檢測系統，可以針對待檢測物產生複數 角度或單角度之投射光，藉此完全改善待檢測物之表面影 像的成像品質’進而提昇品質檢測之準確度。 本發明之另—目的係提供—種光源色度可調整之自動光 學檢測系統，其係藉由調配紅、Μ、綠之發光單元之光線 強度而調配光源之色度，可以針對不㈣色之待檢測物產 生不同顏色之投射光’進而能從待檢測物被榻取之影像中 清楚辨識各加工部分。 為達上述目的，本發明揭示一種可調式光源裝置及具可 調式光源裝置之自動光學檢測系统，其係用於照明一待檢 測物之表面’並提供-線性掃描攝影機擷取該待檢測物影 像之光線。該光源裝置係包含複數個光產生器，並可以單 獨控制各光產生器所產生光線之色度及亮度。又各光產生 器發出之狹長帶狀光線係以不同之投射角度 物。另外，各光產生器係由複數個紅、綠、藍之發= 組成’故可分別調整該複數個發光單元發出紅、 、 、、求、藍光 1306165 線之強度而產生不同色度之 可以克服該待檢測物之粗糙 色度可調之該投射光線能用 及背景之顏色。 光線。藉由該多角度投射光線 表面不易正確成像之問題，而 來分辨該待檢測物上量測目標 該自動光學檢測系統係包含—可兩—# ^ , 3 r固疋待檢測物之平臺、 一視覺取像模組及該光源裝置，复中 r及視覺取像板組包括 一接受該待檢測物反射之光線而开彡占旦， 冰向开/成影像之線性掃描攝影 機。 可藉由-人機介面調整該各對光產生器發出光線之色 度，利用螢幕上紅、藍、綠之亮度數值設定拉軸或輸入搁 以混合為合適色度之光線並輪出。或者選擇該人機介面上 建議色度之色塊，該光產生器奋白包立丄< ^ m 土·« θ自動產生和該選擇色塊相 同色度之光線。 【實施方式】 圖3係本發明具可調式光源裳置之自動光學檢測系統之 示意圖。自動光學檢測系統30係包含一可固定待檢測物之 平臺90、-視覺取像模組7〇及—光源裝置31。視覺取⑽ 組70至少包括收集反射光線之倍率鏡頭71，及將光學訊號 轉換為電氣訊號之訊號接收器72。光源裝置”係包含複數 對光產生器，圖中標號311與312、321與322、331與332及 341與342分別為四對獨立控制之第一〜第四光產生器，並可 之色度及亮度。另 以單獨調整各對光產生器所產生光線 外 ，標號311、312、321、322、 331 ' 332、341 及 342也可 是單獨控制之光產生器 並不一定需要兩兩配對為四個被Μ34288-113357 005672794 1306165 The area of the target and the background (board surface) on the d object is different in color but the gray level (four), which will cause the measurement target and the background to be linearly visible (hne scan) Imaging in the camera cannot be effectively identified. In summary, the city; ^ μ τ $ π, smashing an automatic optical detection system that can effectively adjust the projection direction of the light source and the chromaticity of the light, thereby confirming that the printed circuit board and its laminated sheets are waiting for the detection object quality. SUMMARY OF THE INVENTION The object of the present invention is to provide an adjustable light source device and an automatic optical detection system with an adjustable light source device, which can generate a plurality of angles or single angles of projection light for the object to be detected, thereby completely improving the object to be detected. The image quality of the surface image' improves the accuracy of the quality inspection. Another object of the present invention is to provide an automatic optical detection system capable of adjusting the chromaticity of a light source, which adjusts the chromaticity of the light source by adjusting the light intensity of the red, green and green light-emitting units, and can be used for the color of the (four) color. The object to be detected generates different colors of projected light', and thus the processed portions can be clearly identified from the image in which the object to be detected is taken. In order to achieve the above object, the present invention discloses an adjustable light source device and an automatic optical detection system with an adjustable light source device for illuminating a surface of a to-be-detected object and providing a linear scanning camera for capturing the image of the object to be detected Light. The light source device includes a plurality of light generators, and the chromaticity and brightness of the light generated by each of the light generators can be individually controlled. Moreover, the narrow strips of light emitted by the respective light generators have different projection angles. In addition, each of the light generators is composed of a plurality of red, green, and blue hairs = so that the plurality of light-emitting units can respectively adjust the intensity of red, , , , and blue 1306165 lines to generate different chromaticities. The rough chromaticity of the object to be detected can be adjusted by the projected light and the color of the background. Light. By detecting the problem that the surface of the light is not easily imaged by the multi-angle projection, the automatic optical detection system of the object to be detected includes the platform of the object to be detected, which can be two-#^, 3 r The visual image capturing module and the light source device, the complex medium and the visual image capturing plate set comprise a linear scanning camera that receives the light reflected by the object to be detected and opens the image. The color of the light emitted by each pair of light generators can be adjusted by the human-machine interface, and the pull-axis or input is used to mix and match the light of the red, blue and green colors on the screen to the appropriate color and turn out. Alternatively, the color patch of the recommended color is selected on the man-machine interface, and the light generator is whitened and < ^ m soil·« θ automatically generates light of the same chromaticity as the selected color block. [Embodiment] Fig. 3 is a schematic view showing an automatic optical detecting system with an adjustable light source according to the present invention. The automatic optical inspection system 30 includes a platform 90 for fixing the object to be detected, a visual image capturing module 7A, and a light source device 31. The visual acquisition (10) group 70 includes at least a magnification lens 71 that collects reflected light and a signal receiver 72 that converts the optical signal into an electrical signal. The light source device includes a plurality of pairs of light generators, wherein the reference numerals 311 and 312, 321 and 322, 331 and 332, and 341 and 342 are respectively four pairs of independently controlled first to fourth light generators, and the chromaticity thereof And brightness. In addition to separately adjusting the light generated by each pair of light generators, the labels 311, 312, 321, 322, 331 '332, 341 and 342 may also be individually controlled light generators and do not necessarily need to be paired into four One being
M34288-U3357 005672794 1306165 控制模組。各對光產生器或各個光產生器發出之光線係以 不同之投射角度照射印刷電路板80，且每一對光產生器中 該兩光產生器產生之光線投射於印刷電路板8〇之方向可以 調整為相互對稱。並能分別點亮各對光產生器或各個光產 生器，以針對印刷電路板80之表面及鑽孔82之輪廓產生多 角度或單角度之最佳化投射光，藉此完全改善待檢測物之 表面影像的成像品質，進而提昇品質檢測之準確度。 • 參見圖4(a)，光產生器311係於一長條狀之基板42固定複 數個發光二極體元件41，每一發光二極體元件41内有可發 出紅、監、綠光線之晶粒，因此藉由控制各晶粒之供應電 流就能混合出需要色度之光線。當待檢測物之表面上有綠 色及藍色之兩個區域，若投射於待檢測物之光線固定為白 光時，則會於視覺取像模組7〇中成像之灰階影像檔中無法 分辨該兩個區域之困境。因此本發明之光源裝置31可以根 據檢測之需要，即時變換光產生器311與312發出藍光或綠 ® 光，從而使得該綠色及藍色之兩個區域於影像擋中為灰階 對比清晰可辨之對應兩個面積。 除此之外，如圖4(b)所示，也可將複數個紅光發光二極體 元件41R、綠光發光二極體元件41G及藍光發光二極體元件 41B分別固定於基板42,上以形成另一種光產生器3ιι，，並個 別控制該二類元件41R、41G及41B之電流以混合出預期色 度之光線。為能增加紅、藍、綠光線混合後之均勻性，可於 該三類元件41R、41G及41B前設置一均光片（diffuser)43，從 而使投射光線有著均勻之混色效果。M34288-U3357 005672794 1306165 Control module. The light emitted by each pair of light generators or the respective light generators illuminates the printed circuit board 80 at different projection angles, and the light generated by the two light generators in each pair of light generators is projected in the direction of the printed circuit board 8 Can be adjusted to be symmetrical to each other. And each pair of light generators or individual light generators can be respectively illuminated to generate multi-angle or single-angle optimized projection light for the surface of the printed circuit board 80 and the contour of the drilled hole 82, thereby completely improving the object to be detected. The image quality of the surface image improves the accuracy of the quality inspection. • Referring to FIG. 4( a ), the light generator 311 is fixed to a plurality of light-emitting diode elements 41 on a long substrate 42 , and each of the light-emitting diode elements 41 emits red, super, and green light. The crystal grains, therefore, the light of the desired chromaticity can be mixed by controlling the supply current of each of the crystal grains. When there are two areas of green and blue on the surface of the object to be detected, if the light projected on the object to be detected is fixed to white light, it will not be distinguishable in the gray image file imaged in the visual image capturing module 7〇. The dilemma of the two regions. Therefore, the light source device 31 of the present invention can instantly convert the light generators 311 and 312 to emit blue light or green light according to the need of detection, so that the two regions of the green and blue colors are clearly distinguishable in the image block. Corresponding to two areas. In addition, as shown in FIG. 4(b), a plurality of red light-emitting diode elements 41R, green light-emitting diode elements 41G, and blue light-emitting diode elements 41B may be respectively fixed to the substrate 42. The light is formed to form another light generator 3, and the currents of the two types of elements 41R, 41G, and 41B are individually controlled to mix the light of the desired chromaticity. In order to increase the uniformity of red, blue and green light mixing, a diffuser 43 can be arranged in front of the three types of elements 41R, 41G and 41B, so that the projected light has a uniform color mixing effect.
M34288-113357 005672794 1306165 圖5係本發明調整投射光線色度之人機介面5〇示意圖。為 能調整該各對光產生器發出光線之色度，可利用螢幕上 紅、藍、綠之亮度數值設定拉軸川、521及531或輸入搁 512、522及532以混合紅、藍、綠光為合適色度之光線並輸 出。或者選擇該人機介面50上建議色度之色塊54，人機介 面50上選定之色塊54轉換為電氣訊號，並經由控制匯流排 (例如RS232)，從而控制該光產生器產生和該選擇色塊μ相 同色度之光線。 本發明之技術内容及技術特點已揭示如上熟悉本 項技術之人士仍可能基於本發明之教示及揭示而作種種不 背離本發明精神之替換及修•。因此，本發明之保護範圍 應不限於實施例所揭示者，而應包括各種不f離本發明之 替換及修飾，並為以下之申請專利範圍所涵蓋。 【圖式簡單說明】 圖1係習知視覺檢測系統之外觀示意圖； 圖2係圖1十投射光源產生光線照射鑽孔内部之示意圖； 圖3係本發明具可調式光源裝置之自動光學檢測系統之 示意圖； 圖4(a)〜4(b)係本發明光產生器之上視圖；以及 圖5係本發明調整投射光線色度之人機介面示意圖。 【主要元件符號說明】 10 視覺檢測系統 12 14 倍率鏡頭 16 17 光源裝置 18 投射光源 訊號接收器 視覺取像模組M34288-113357 005672794 1306165 FIG. 5 is a schematic diagram of a human-machine interface of the present invention for adjusting the chromaticity of projected light. In order to adjust the chromaticity of the light emitted by each pair of light generators, the brightness values of red, blue and green on the screen can be used to set the pull axis, 521 and 531 or the input shelves 512, 522 and 532 to mix red, blue and green. Light is the light of the appropriate color and output. Alternatively, the color block 54 of the recommended color on the human interface 50 is selected, and the selected color block 54 on the human interface 50 is converted into an electrical signal, and controlled by the light bus (for example, RS232), thereby controlling the light generator to generate and Select the light with the same color of the color block μ. The technical content and technical features of the present invention have been disclosed to those skilled in the art, and it is possible to make various alternatives and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be construed as not limited by the scope of the invention, and the invention is intended to BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the appearance of a conventional visual inspection system; FIG. 2 is a schematic view showing the inside of a drilled light generated by a projection light source; FIG. 3 is an automatic optical detection system with an adjustable light source device according to the present invention; 4(a) to 4(b) are top views of the light generator of the present invention; and FIG. 5 is a schematic diagram of a human machine interface for adjusting the chromaticity of the projected light of the present invention. [Main component symbol description] 10 Visual inspection system 12 14 magnification lens 16 17 Light source device 18 Projection light source Signal receiver Visual image capture module
M34288-113357 005672794 1306165 31 光源裝置 41 發光二極體元件 42 基板 43 均光片 50 人機介面 54 色塊 70 視覺取像模組 71 倍率鏡頭 72 訊號接收器 80 印刷電路板 82 鑽孔 84 聚焦光線 90 平臺 42, 基板 41R 紅光發光二 極體元件 41G 綠光發光二 極體元件 41B 藍光發光二 極體元件 120 調整角度支架 121 光線 311、312、321、322、331、332、341、342 光產生器 511、521、531 紅、藍、綠之亮度數值設定拉軸 511、521、531 輸入欄 31Γ 光產生器 821 孔内壁M34288-113357 005672794 1306165 31 Light source device 41 Light-emitting diode element 42 Substrate 43 Homogenizer 50 Human interface 54 Color block 70 Visual image capture module 71 Magnification lens 72 Signal receiver 80 Printed circuit board 82 Drill hole 84 Focusing light 90 platform 42, substrate 41R red light emitting diode element 41G green light emitting diode element 41B blue light emitting diode element 120 adjusting angle bracket 121 light 311, 312, 321, 322, 331, 332, 341, 342 light The brightness values of the generators 511, 521, and 531 red, blue, and green are set to pull the shafts 511, 521, and 531. The input field 31 Γ the light generator 821 the inner wall of the hole