JPH0933445A - Lighting equipment for printed wiring board inspection equipment - Google Patents
Lighting equipment for printed wiring board inspection equipmentInfo
- Publication number
- JPH0933445A JPH0933445A JP7209236A JP20923695A JPH0933445A JP H0933445 A JPH0933445 A JP H0933445A JP 7209236 A JP7209236 A JP 7209236A JP 20923695 A JP20923695 A JP 20923695A JP H0933445 A JPH0933445 A JP H0933445A
- Authority
- JP
- Japan
- Prior art keywords
- wiring board
- printed wiring
- fluorescent tube
- mark
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007689 inspection Methods 0.000 title claims description 22
- 238000005286 illumination Methods 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 239000006071 cream Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Supply And Installment Of Electrical Components (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、印刷配線板におけ
る電子部品等の外観検査を行う検査装置において、該検
査を開始するためのテレビカメラと印刷配線板の相対基
準位置を決定するに際して、印刷配線板上に印刷されて
いる基準マーカを照明するための照明装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection apparatus for inspecting the appearance of an electronic component or the like on a printed wiring board, and when determining a relative reference position between a television camera and the printed wiring board for starting the inspection, the printing is performed. The present invention relates to an illuminating device for illuminating a reference marker printed on a wiring board.
【０００２】[0002]
【従来の技術】印刷配線板に塗布されたクリーム半田上
に載置されている、あるいは、半田付けされている電子
部品の外観検査をテレビカメラを使用して行う検査装置
にあっては、印刷配線板上をリング状の蛍光管によって
照明して電子部品を撮影していた。2. Description of the Related Art In an inspection apparatus that uses a television camera to inspect the appearance of electronic components mounted on or soldered to cream solder applied to a printed wiring board, a printing method is used. The electronic components were photographed by illuminating the wiring board with a ring-shaped fluorescent tube.
【０００３】また、前記した検査装置においては、検査
を開始するに当たってテレビカメラに対する印刷配線板
の位置決めを行い、その後に印刷配線板をコンピュータ
からの指令によってＸ−Ｙステージによって移動し、検
査を行う各電子部品をテレビカメラの真下に移動させて
撮影し、画像処理による電子部品のズレや反転、半田付
け状態を検査していた。In the above-described inspection apparatus, when starting the inspection, the printed wiring board is positioned with respect to the television camera, and then the printed wiring board is moved by the XY stage according to a command from the computer, and the inspection is performed. Each electronic component was moved to a position directly below a television camera and photographed, and the displacement, inversion, and soldering state of the electronic component were inspected by image processing.
【０００４】そして、前記Ｘ軸方向とＹ軸方向の位置決
めを行うには、印刷配線板に印刷されている基準点とな
るマークをテレビカメラの真下に移動し、該マークがテ
レビカメラにおける受光面の所定位置になるようにＸ−
Ｙステージを移動していた。In order to perform the positioning in the X-axis direction and the Y-axis direction, a mark serving as a reference point printed on the printed wiring board is moved to a position directly below the television camera, and the mark is moved to a light receiving surface of the television camera. X-
The Y stage was moving.
【０００５】[0005]
【発明が解決しようとする課題】ところで、前記した基
準点を示すマーク位置をテレビカメラで検出する場合に
おいて、リング状の蛍光管による照明のみでは輝度が不
足すると共に蛍光管からの光が乱反射して視認不足とな
り、正確にマーク位置の検出が行えないといった問題が
あった。By the way, when a mark position indicating the above-mentioned reference point is detected by a television camera, the luminance is insufficient with illumination by a ring-shaped fluorescent tube alone, and light from the fluorescent tube is irregularly reflected. And there is a problem that the mark position cannot be detected accurately.
【０００６】本発明は前記した問題点を解決せんとする
もので、その目的とするところは、光の直進性の高い発
光ダイオードをリング状に配置し、印刷配線板上の基準
点を示すマークを照明するようにしたので、該マークが
テレビカメラで認識しやすくなって基準位置の設定が容
易に行える印刷配線板検査装置用の照明装置を提供せん
とするにある。An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to arrange a light emitting diode having high linearity of light in a ring shape and to provide a mark indicating a reference point on a printed wiring board. Therefore, it is an object of the present invention to provide an illumination device for a printed wiring board inspection device in which the mark can be easily recognized by a television camera and a reference position can be easily set.
【０００７】また、前記発光ダイオードの光軸を印刷配
線板の一点に向けることによってマークに対する照明輝
度を高くしたので、よりマークの認識が良好となって基
準位置の設定が極めて正確に行える印刷配線板検査装置
用の照明装置を提供せんとするにある。Further, since the illumination brightness for the mark is increased by directing the optical axis of the light emitting diode to one point of the printed wiring board, the recognition of the mark becomes better, and the reference position can be set very accurately. It is to provide a lighting device for a board inspection device.
【０００８】[0008]
【課題を解決するための手段】本発明の印刷配線板検査
装置用の照明装置は前記した目的を達成せんとするもの
で、その手段は、テレビカメラのレンズ面を中心として
配置され、印刷配線板上を均一な照明を行うリング状の
蛍光管を有する印刷配線板検査装置であって、前記蛍光
管より前記テレビカメラのレンズ側に位置し、かつ、蛍
光管の内周より小さい略リング状に配置された多数の発
光ダイオードを具備したものである。SUMMARY OF THE INVENTION An illumination device for a printed wiring board inspection apparatus according to the present invention is intended to achieve the above-mentioned object, and the means is arranged around the lens surface of the television camera as a center, and the printed wiring is provided. A printed wiring board inspection device having a ring-shaped fluorescent tube for uniformly illuminating the board, the ring-shaped fluorescent tube being located closer to the lens side of the television camera than the fluorescent tube and smaller than the inner circumference of the fluorescent tube. It is equipped with a large number of light emitting diodes arranged in.
【０００９】また、前記多数の発光ダイオードは光軸が
前記印刷配線板の一点に向かうように傾けることが望ま
しく、さらに、発光ダイオードは高輝度発光ダイオード
であることが望ましい。The plurality of light emitting diodes are preferably tilted so that their optical axes are directed to one point of the printed wiring board, and the light emitting diodes are preferably high brightness light emitting diodes.
【００１０】[0010]
【発明の実施の態様】次に、本発明に係る印刷配線板検
査装置用の照明装置の実施の一態様を図面と共に説明す
る。１は検査装置本体に固定された固定板、２は該固定
板１と取付板３との間にボルト４によって挟持固定され
たＣＣＤテレビカメラにして、レンズ２ａが下向きに取
付けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a lighting device for a printed wiring board inspection apparatus according to the present invention will be described with reference to the drawings. 1 is a fixed plate fixed to the inspection apparatus main body, 2 is a CCD television camera fixed and fixed between the fixed plate 1 and the mounting plate 3 by bolts 4, and has a lens 2a mounted downward.
【００１１】５は前記固定板１に対して水平状態で固定
された支持板にして、前記テレビカメラ２のレンズ２ａ
と対応する位置に孔５ａが開口されている。６はスペー
サ７を介して取付けられた印刷配線板にして、中央に前
記孔５ａと同様に孔６ａが開口されている。そして、こ
の孔６ａの回りには高輝度の発光ダイオード、例えば、
赤色の発光ダイオード８が下向きに半田付けされてい
る。Reference numeral 5 denotes a support plate fixed in a horizontal state with respect to the fixed plate 1, and a lens 2a of the TV camera 2.
A hole 5a is opened at a position corresponding to. Reference numeral 6 denotes a printed wiring board mounted via a spacer 7, and a hole 6a is opened at the center similarly to the hole 5a. Around the hole 6a, a high-luminance light-emitting diode, for example,
The red light emitting diode 8 is soldered downward.
【００１２】この発光ダイオード８は前記孔６ａと同心
円状に２重に取付けられると共に、全ての発光ダイオー
ド８は後述する被検査用印刷配線板Ａ上の一点に光軸が
向かうように傾いて取付けられている。The light-emitting diodes 8 are mounted double in a concentric manner with the hole 6a, and all the light-emitting diodes 8 are mounted at a point on the printed wiring board A to be inspected so that the optical axis is directed to the point to be described later. Have been.
【００１３】９は前記固定板１に前記印刷配線板６より
下方に水平状態で取付けられたリング状蛍光管９ａを内
蔵した照明装置にして、この照明装置９のケースにも前
記印刷配線板６の孔６ａより大きい開口９ｂが形成され
ている。Reference numeral 9 denotes an illumination device having a ring-shaped fluorescent tube 9a mounted horizontally on the fixed plate 1 below the printed wiring board 6, and the printed wiring board 6 is also provided in the case of the illumination device 9. An opening 9b larger than the hole 6a is formed.
【００１４】Ａは被検査用印刷配線板にして、図示しな
いＸ−ＹステージによってＸ方向およびＹ方向にコンピ
ュータよりの指令によって移動する。そして、この被検
査印刷配線板Ａには、基準点を示すＸ字状のマークＡ1
が印刷されている。A is a printed wiring board to be inspected, and is moved by an instruction from a computer in an X direction and a Y direction by an XY stage (not shown). The printed wiring board A to be inspected has an X-shaped mark A 1 indicating a reference point.
Is printed.
【００１５】次に、前記した構成に基づいて動作を説明
するに、先ず、被検査用印刷配線板Ａに実装されている
電子部品の検査を行う場合には、テレビカメラ２の真下
に該被検査用印刷配線板ＡのマークＡ1 をＸ−Ｙステー
ジによって移動させて、テレビカメラ２によってマーク
Ａ1 を撮影して基準点を記憶する。Next, a description will be given of the operation based on the above-mentioned configuration. First, when an electronic component mounted on the printed wiring board A to be inspected is inspected, the electronic component is mounted immediately below the television camera 2. mark a 1 of the inspection printed wiring board a is moved by the X-Y stage, and stores the reference point by photographing the marks a 1 by the television camera 2.
【００１６】この時、蛍光管９ａによる照明では、周囲
とのコントラストが低くマークＡ1の抽出が困難なた
め、蛍光管９ａに代え発光ダイオード８を点灯する。こ
の発光ダイオード８は光の直進性が優れており、かつ、
発光ダイオード８の光軸をマークＡ1 の方向に傾けてい
るので、マークＡ1 は多数の発光ダイオード８よりの光
によって集中して照明され、従って、周囲とのコントラ
ストが高くなったマークＡ1 をテレビカメラ２で鮮明に
画像として捉えることができることにより、基準点の判
別がきわめて良好に行える。[0016] At this time, in the illumination by fluorescent tubes 9a, the contrast of the mark A 1 low extraction of the surrounding is difficult to light the light emitting diode 8 instead of the fluorescent tube 9a. The light emitting diode 8 has excellent straightness of light, and
Since inclined optical axis of the light emitting diode 8 in the direction of the mark A 1, marks A 1 is illuminated intensively to the light from multiple light-emitting diodes 8, therefore, marks A 1 became high contrast to the surrounding Can be clearly captured as an image by the television camera 2, so that the reference point can be determined very well.
【００１７】このように、基準点をテレビカメラ２で捉
えた後は、この基準点からのＸ，Ｙ方向の距離が予め判
っているので、コンピュータはＸ−Ｙステージにより被
検査用印刷配線板Ａ上の検査対象の電子部品をテレビカ
メラ２におけるレンズ２ａの真下に移動させて、電子部
品のズレ等を画像に捉えて正規の画像との比較を行って
検査が行えるものである。After the reference point is captured by the television camera 2, the distances in the X and Y directions from the reference point are known in advance, and the computer uses the XY stage to operate the printed wiring board for inspection. By moving the electronic component to be inspected on A just below the lens 2a of the television camera 2, the deviation or the like of the electronic component is captured in an image, and the image is compared with a regular image to perform inspection.
【００１８】なお、前記した発光ダイオードはマークＡ
1 の位置を検出した後は消灯し蛍光管９ａのみの照明で
も、電子部品の形状をテレビカメラ２で撮影する光量と
しては十分である。また、前記した実施例にあっては、
テレビカメラ２側を固定し被検査用印刷配線板Ａを移動
するものについて説明したが、テレビカメラ２側をＸ−
Ｙステージによって移動するようにしてもよい。It should be noted that the above-mentioned light emitting diode is marked with a mark A.
After detecting the position 1 , even if the light is turned off and only the fluorescent tube 9a is illuminated, the amount of light for photographing the shape of the electronic component with the television camera 2 is sufficient. In the above-described embodiment,
In the above description, the TV camera 2 side is fixed and the printed wiring board A to be inspected is moved.
You may make it move by a Y stage.
【００１９】[0019]
【発明の効果】本発明は前記した如く、印刷配線板の検
査開始時における基準点であるマーク位置の確認時にお
いて、蛍光管による照明以外に指向性の高い発光ダイオ
ードにより、マークを高輝度で照明することによって周
囲とのコントラストを高め安定した２値化画像を得る効
果を有するものである。As described above, according to the present invention, at the time of checking the mark position, which is the reference point at the start of the inspection of the printed wiring board, the mark has high brightness by means of a light-emitting diode having high directivity other than illumination by a fluorescent tube. The illumination has the effect of increasing the contrast with the surroundings and obtaining a stable binarized image.
【００２０】また、前記発光ダイオードの光軸をマーク
位置に集中するように傾けたので、マークはより一層高
輝度で照明されてより確認が容易になり、かつ、高輝度
発光ダイオードを使用することにより、よりマークの照
明が明るく行える等の効果を有するものである。In addition, since the optical axis of the light emitting diode is inclined so as to be concentrated on the mark position, the mark is illuminated with higher brightness so that the mark can be easily checked, and the high brightness light emitting diode is used. Thus, the mark can be illuminated more brightly.
【図１】本発明に係る印刷配線板検査装置用の照明装置
の斜視図である。FIG. 1 is a perspective view of a lighting device for a printed wiring board inspection device according to the present invention.
【図２】同上の側面図である。FIG. 2 is a side view of the same.
【図３】発光ダイオードの配列状態を示す底面図であ
る。FIG. 3 is a bottom view showing an arrangement state of light emitting diodes.
２ テレビカメラ ２ａ レンズ ８ 発光ダイオード ９ａ 蛍光管 2 TV camera 2a Lens 8 Light emitting diode 9a Fluorescent tube
Claims (3)
置され、印刷配線板上を均一な照明を行うリング状の蛍
光管を有する印刷配線板検査装置であって、前記蛍光管
より前記テレビカメラのレンズ側に位置し、かつ、蛍光
管の内周より小さい略リング状に配置された多数の発光
ダイオードを具備したことを特徴とする印刷配線板検査
装置の照明装置。1. A printed wiring board inspection device having a ring-shaped fluorescent tube which is arranged with the lens surface of the television camera as a center and uniformly illuminates the printed wiring board. An illumination device for a printed wiring board inspection device, comprising a large number of light-emitting diodes located on the lens side and arranged in a substantially ring shape smaller than the inner circumference of the fluorescent tube.
印刷配線板の一点に向かうように傾けたことを特徴とす
る請求項１記載の印刷配線板検査装置の照明装置。2. The illuminating device of the printed wiring board inspection apparatus according to claim 1, wherein the plurality of light emitting diodes are tilted so that their optical axes are directed toward one point of the printed wiring board.
ードであることを特徴とする請求項１記載の印刷配線板
検査装置の照明装置。3. The illumination device for a printed wiring board inspection device according to claim 1, wherein the light emitting diode is a high-intensity light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7209236A JP2775411B2 (en) | 1995-07-25 | 1995-07-25 | Lighting equipment for printed wiring board inspection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7209236A JP2775411B2 (en) | 1995-07-25 | 1995-07-25 | Lighting equipment for printed wiring board inspection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0933445A true JPH0933445A (en) | 1997-02-07 |
| JP2775411B2 JP2775411B2 (en) | 1998-07-16 |
Family
ID=16569621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7209236A Expired - Fee Related JP2775411B2 (en) | 1995-07-25 | 1995-07-25 | Lighting equipment for printed wiring board inspection equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2775411B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000121563A (en) * | 1998-10-08 | 2000-04-28 | Victor Co Of Japan Ltd | Appearance inspecting device |
| EP1291708A1 (en) * | 2001-09-07 | 2003-03-12 | Contrast Lighting Services, Inc. | Wide area lighting effects system |
| US7290893B2 (en) | 2004-04-07 | 2007-11-06 | Gekko Technology Limited | Lighting apparatus |
| US7331681B2 (en) | 2001-09-07 | 2008-02-19 | Litepanels Llc | Lighting apparatus with adjustable lenses or filters |
| WO2008114486A1 (en) * | 2007-02-21 | 2008-09-25 | Panasonic Corporation | Lighting device for image capturing in electronic component mounting apparatus |
| US7429117B2 (en) | 2001-09-07 | 2008-09-30 | Litepanels Llc | Camera-mounted dimmable lighting apparatus |
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|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000121563A (en) * | 1998-10-08 | 2000-04-28 | Victor Co Of Japan Ltd | Appearance inspecting device |
| US7318652B2 (en) | 2001-09-07 | 2008-01-15 | Litepanels Llc | Versatile stand-mounted wide area lighting apparatus |
| US7510290B2 (en) | 2001-09-07 | 2009-03-31 | Litepanels Llc | Stand-mounted light panel for natural illumination in film, television or video |
| US6824283B2 (en) | 2001-09-07 | 2004-11-30 | Contrast Lighting Services, Inc. | Wide area fluorescent lighting apparatus |
| US9097957B2 (en) | 2001-09-07 | 2015-08-04 | Litepanels, Ltd | Versatile lighting apparatus and associated kit |
| US6749310B2 (en) | 2001-09-07 | 2004-06-15 | Contrast Lighting Services, Inc. | Wide area lighting effects system |
| EP1291708A1 (en) * | 2001-09-07 | 2003-03-12 | Contrast Lighting Services, Inc. | Wide area lighting effects system |
| US7331681B2 (en) | 2001-09-07 | 2008-02-19 | Litepanels Llc | Lighting apparatus with adjustable lenses or filters |
| US7604361B2 (en) | 2001-09-07 | 2009-10-20 | Litepanels Llc | Versatile lighting apparatus and associated kit |
| US7429117B2 (en) | 2001-09-07 | 2008-09-30 | Litepanels Llc | Camera-mounted dimmable lighting apparatus |
| US7303308B2 (en) | 2004-04-07 | 2007-12-04 | Gekko Technology Limited | Lighting apparatus |
| US7690801B2 (en) | 2004-04-07 | 2010-04-06 | Gekko Technology Limited | Lighting apparatus |
| US7290893B2 (en) | 2004-04-07 | 2007-11-06 | Gekko Technology Limited | Lighting apparatus |
| WO2008114486A1 (en) * | 2007-02-21 | 2008-09-25 | Panasonic Corporation | Lighting device for image capturing in electronic component mounting apparatus |
| US8845114B2 (en) | 2007-02-21 | 2014-09-30 | Panasonic Corporation | Lighting device for image capturing in electronic component mounting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2775411B2 (en) | 1998-07-16 |
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