JP2600500B2 - Glass pipe end chamfering inspection equipment - Google Patents
Glass pipe end chamfering inspection equipmentInfo
- Publication number
- JP2600500B2 JP2600500B2 JP486991A JP486991A JP2600500B2 JP 2600500 B2 JP2600500 B2 JP 2600500B2 JP 486991 A JP486991 A JP 486991A JP 486991 A JP486991 A JP 486991A JP 2600500 B2 JP2600500 B2 JP 2600500B2
- Authority
- JP
- Japan
- Prior art keywords
- glass pipe
- light intensity
- microscope
- light
- glass
- 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.)
- Expired - Lifetime
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、ガラスパイプ端面面取
り検査装置に関し、特に光ファイバコネクタに使用され
る光ファイバ挿入用面取りのついた光ファイバガイド用
ガラスパイプに適用しうるガラスパイプ端面面取り検査
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass pipe end chamfering inspection apparatus, and more particularly, to a glass pipe end chamfering inspection applicable to an optical fiber guide glass pipe with an optical fiber insertion chamfer used in an optical fiber connector. Related to the device.
【０００２】[0002]
【従来の技術】従来のガラスパイプ端面面取りの検査
は、ガラスパイプ端面面取り部を顕微鏡にて人手で観察
して、面取りが正しくついているか検査していた。2. Description of the Related Art In a conventional inspection of glass pipe end chamfering, a glass pipe end chamfered portion is manually observed with a microscope to check whether the chamfer is properly formed.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来のガラス
パイプ端面面取り検査方法は、検査結果の判断を顕微鏡
を使ってガラスパイプ端面を観察して人手で行うので、
検査結果の信頼性が低く、一定時間当りの検査数を多く
できないという欠点があった。In the conventional glass pipe end chamfering inspection method described above, the inspection result is judged manually by observing the glass pipe end surface using a microscope.
There is a drawback that the reliability of the test result is low and the number of tests per fixed time cannot be increased.
【０００４】[0004]
【課題を解決するための手段】本発明のガラスパイプ端
面面取り検査装置は、光源と、前記光源からの集光され
た光により透過照明されたガラスパイプの軸方向からガ
ラスパイプ端面内周面取り部を観察する顕微鏡と、前記
顕微鏡の接眼部に接続される１次元光センサと、前記顕
微鏡と前記１次元光センサをガラスパイプの軸方向に動
かす一軸ステージと、前記１次元光センサに結像するガ
ラスパイプの端面の像の内周上の空気とガラスの界面お
よび面取り部分と他の部分との光強度差がもっとも大き
くなる位置に前記一軸ステージを移動し、前記１次元光
センサに結像するガラスパイプの端面の像の光強度が小
さく暗い部分の幅によりガラスパイプの面取りが適正か
否かを判断する制御装置とを含んで構成される。SUMMARY OF THE INVENTION A glass pipe end chamfering inspection apparatus according to the present invention comprises: a light source; and a glass pipe end surface inner peripheral chamfered portion in the axial direction of a glass pipe transmitted and illuminated by light condensed from the light source. A microscope for observing the microscope, a one-dimensional optical sensor connected to the eyepiece of the microscope, a one-axis stage for moving the microscope and the one-dimensional optical sensor in the axial direction of the glass pipe, and forming an image on the one-dimensional optical sensor The uniaxial stage is moved to the position on the inner periphery of the image of the end face of the glass pipe where the light intensity difference between the interface between the air and the glass and the chamfered portion and the other portion is largest, and the image is formed on the one-dimensional optical sensor. And a controller for determining whether or not the chamfer of the glass pipe is appropriate based on the width of the dark portion where the light intensity of the image of the end face of the glass pipe is small.
【０００５】[0005]
【実施例】次に、本発明の実施例について、図面を参照
して詳細に説明する。Next, embodiments of the present invention will be described in detail with reference to the drawings.
【０００６】図１は本発明の一実施例を示す構成図であ
る。FIG. 1 is a block diagram showing an embodiment of the present invention.
【０００７】図１に示す本実施例のガラスパイプ端面面
取り検査装置は、光源１と、光源１より出射される光を
集光するコンデンサレンズ２と、コンデンサレンズ２に
より透過照明されたガラスパイプ３の軸方向からガラス
パイプ３の端面内周面取り部を観察する顕微鏡４と、顕
微鏡４の接眼部に接続される１次元ＣＣＤカメラ５と、
顕微鏡４と１次元ＣＣＤカメラ５をガラスパイプ３の軸
方向に動かす一軸ステージ６と、１次元ＣＣＤカメラ５
を制御する１次元ＣＣＤコントローラ７と、一軸ステー
ジ６を駆動するステージコントローラ８と、１次元ＣＣ
Ｄコントローラ７とステージコントローラ８を制御し１
次元ＣＣＤカメラ５に結像するガラスパイプ３の端面の
内周上の空気とガラスの界面および面取り部分が他の部
分より暗くなりその光強度差がもっとも大きくなる位置
に一軸ステージ６を移動し、１次元ＣＣＤカメラ５によ
り検出される光強度分布において光強度が小さく光強度
が一定値以下の暗い部分の幅を求め、その幅の大きさに
よりガラスパイプ３の面取りが正しくついているかを判
断する制御装置９とを含んで構成される。A glass pipe end chamfering inspection apparatus of this embodiment shown in FIG. 1 comprises a light source 1, a condenser lens 2 for condensing light emitted from the light source 1, and a glass pipe 3 transmitted and illuminated by the condenser lens 2. A microscope 4 for observing the inner peripheral chamfer of the glass pipe 3 from the axial direction of the glass pipe 3, a one-dimensional CCD camera 5 connected to an eyepiece of the microscope 4,
A uniaxial stage 6 for moving the microscope 4 and the one-dimensional CCD camera 5 in the axial direction of the glass pipe 3;
One-dimensional CCD controller 7 for controlling the one-dimensional stage, a stage controller 8 for driving the one-axis stage 6, and a one-dimensional CC
D controller 7 and stage controller 8
The uniaxial stage 6 is moved to a position where the interface between the air and glass and the chamfered portion on the inner periphery of the end face of the glass pipe 3 which forms an image on the three-dimensional CCD camera 5 are darker than the other portions and the light intensity difference is the largest, In the light intensity distribution detected by the one-dimensional CCD camera 5, the width of a dark portion where the light intensity is small and the light intensity is equal to or less than a certain value is determined, and whether or not the chamfer of the glass pipe 3 is correctly attached is determined based on the width. And an apparatus 9.
【０００８】光源１より出た光はコンデンサレンズ２に
よって集められガラスパイプ３の面取りされている側に
対し反対側の端面より入射する。ガラスパイプ３の面取
りされている側の端面をみる位置に顕微鏡４があり、顕
微鏡４によりガラスパイプ３の端面の面取り部分を拡大
して１次元ＣＣＤカメラ５がとらえる。ガラスパイプ３
は透過照明されていることになる。The light emitted from the light source 1 is collected by the condenser lens 2 and enters the glass pipe 3 from the end face opposite to the chamfered side. The microscope 4 is located at a position where the end face of the glass pipe 3 on the chamfered side is viewed, and the one-dimensional CCD camera 5 captures the chamfered portion of the end face of the glass pipe 3 by the microscope 4. Glass pipe 3
Is transmitted light illumination.
【０００９】制御装置９は１次元ＣＣＤ５における光強
度分布を１次元ＣＣＤコントローラ７を通してとりこ
み、１次元ＣＣＤカメラ５でとらえるガラスパイプ３の
透過光強度分布において最も明るい部分と暗い部分の光
強度差が最も大きくなるようにステージコントローラ８
を介して一軸ステージ６を動かす。焦点位置においては
像のコントラストが最大になる、すなわち最も明るい部
分と暗い部分の光強度差が最大になるということは焦点
があったことになる。光強度差が最大になるように一軸
ステージ６を動かすのはオートフォーカスを行っている
ことになる。The control device 9 takes in the light intensity distribution in the one-dimensional CCD 5 through the one-dimensional CCD controller 7 and determines the difference in light intensity between the brightest part and the dark part in the transmitted light intensity distribution of the glass pipe 3 captured by the one-dimensional CCD camera 5. Stage controller 8 to be the largest
The one-axis stage 6 is moved via. At the focal position, the contrast of the image becomes maximum, that is, the light intensity difference between the brightest part and the dark part becomes maximum, which means that there is a focus. Moving the uniaxial stage 6 so that the light intensity difference is maximized means that autofocus is being performed.
【００１０】図２はガラスパイプ３の面取りされている
側の端部の拡大側面図である。図３は図２のＡ部を示
し、図４は焦点ずれの場合の１次元ＣＣＤカメラ５の受
光の光強度分布を示し、図５は焦点が合った場合の１次
元ＣＣＤカメラ５の受光の光強度分布を示す。図３
（ａ）、図４（ａ）および図５（ａ）はガラスパイプ３
の面取りが小さい場合、図３（ｂ）、図４（ｂ）および
図５（ｂ）は適正な面取りの場合、図３（ｃ）、図４
（ｃ）および図５（ｃ）は面取り角度が小さい場合であ
る。FIG. 2 is an enlarged side view of the chamfered end of the glass pipe 3. As shown in FIG. FIG. 3 shows part A of FIG. 2, FIG. 4 shows the light intensity distribution of the received light of the one-dimensional CCD camera 5 in the case of defocus, and FIG. 3 shows a light intensity distribution. FIG.
(A), FIG. 4 ( a ) and FIG. 5 (a) show the glass pipe 3
3 (b), 4 (b) and 5 (b) when the chamfer is small, FIGS. 3 (c) and 4 (b)
(C) and FIG. 5 (c) show the case where the chamfer angle is small.
【００１１】焦点がずれている場合は像がぼけることに
なるのでどの場合でも明るい部分と暗い部分の差が小さ
い。焦点があうと像のコントラストがよくなるので明暗
がはっきりする。When the focus is out of focus, the image is blurred, so that the difference between the bright part and the dark part is small in any case. When the focal point is in focus, the contrast of the image is improved, so that the contrast is clear.
【００１２】ガラスパイプを透過照明すると面取り部は
黒くみえるためその黒くみえる部分の幅で面取りの大き
さがわかる。一定の光強度で光強度分布を切り、光強度
が一定値より小さい暗い部分の幅ｘを面取りの大きさの
代表値とすると、図５（ａ）の面取りが少ない場合の幅
ｘは図５（ｂ）の適正面取りの場合の幅ｘより小さくな
る。このように幅ｘと値が適正であるかどうかにより面
取りの大きさを知ることができる。When the glass pipe is transmitted and illuminated, the chamfered portion looks black, and the size of the chamfer can be determined from the width of the blackened portion. Assuming that the light intensity distribution is cut at a constant light intensity and the width x of the dark portion where the light intensity is smaller than the constant value is a representative value of the size of the chamfer, the width x in FIG. The width becomes smaller than the width x in the case of the appropriate chamfering in FIG. Thus, the size of the chamfer can be known from the width x and whether the value is appropriate.
【００１３】図３（ｃ）のように端面に対する面取り角
度が小さい場合は面取りが光ファイバの挿入ガイドとし
て役を果たさなくなる。この場合の光強度分布は光が面
取り部で反射されず透過してくるようになり明るくなる
ため、図５（ｃ）に示されるように明るい部分と暗い部
分の差ｙが図３（ａ）、（ｂ）の端面の場合の光強度分
布を示す図５（ａ）、（ｂ）に比べて小さく、図５
（ａ）、（ｂ）と同じ一定の光強度で光強度分布を切っ
ても面取りの大きさの代表値であある幅ｘは０となり不
合格となる。When the chamfer angle with respect to the end face is small as shown in FIG. 3C, the chamfer does not serve as an optical fiber insertion guide. In this case, the light intensity distribution is
It becomes bright because it comes through and is not reflected by the taking part
Therefore, as shown in FIG.
3 (a) and 3 (b) when the difference y is the light intensity.
5 (a) and 5 (b) showing the cloth,
Even if the light intensity distribution is cut at the same constant light intensity as in (a) and (b) , the width x, which is a representative value of the size of the chamfer, becomes 0, which is a failure.
【００１４】[0014]
【発明の効果】本発明のガラスパイプ端面面取り検査装
置は、ガラスパイプを透過照明し面取りしてある側の端
面を顕微鏡にて拡大し１次元ＣＣＤカメラ等の光センサ
で光強度分布を測定することにより、ガラスパイプの面
取り検査を正確に行うことができるという効果がある。The glass pipe end chamfering inspection apparatus of the present invention transmits and illuminates the glass pipe and magnifies the chamfered end surface with a microscope, and measures the light intensity distribution with an optical sensor such as a one-dimensional CCD camera. This has the effect that the chamfering inspection of the glass pipe can be performed accurately.
【図１】本発明の一実施例の構成図である。FIG. 1 is a configuration diagram of an embodiment of the present invention.
【図２】第１図のガラスパイプ３の面取りされている側
の端部の拡大側面図である。FIG. 2 is an enlarged side view of the chamfered end of the glass pipe 3 of FIG.
【図３】図２のＡ部を示す図である。FIG. 3 is a diagram showing a part A of FIG. 2;
【図４】焦点ずれの場合の１次元ＣＣＤカメラ５の受光
の光強度分布を示す図である。FIG. 4 is a diagram showing a light intensity distribution of light received by the one-dimensional CCD camera 5 in the case of defocus.
【図５】焦点が合った場合の１次元ＣＣＤカメラ５の受
光の光強度分布を示す図である。FIG. 5 is a diagram showing a light intensity distribution of light received by the one-dimensional CCD camera 5 when the object is in focus.
１ 光源 ２ コンデンサレンズ ３ ガラスパイプ ４ 顕微鏡 ５ １次元ＣＣＤカメラ ６ 一軸ステージ ７ １次元ＣＣＤコントローラ ８ ステージコントローラ ９ 制御装置 １０ 光 DESCRIPTION OF SYMBOLS 1 Light source 2 Condenser lens 3 Glass pipe 4 Microscope 5 1D CCD camera 6 Uniaxial stage 7 1D CCD controller 8 Stage controller 9 Controller 10 Light
Claims (1)
より透過照明されたガラスパイプの軸方向からガラスパ
イプ端面内周面取り部を観察する顕微鏡と、前記顕微鏡
の接眼部に接続される１次元光センサと、前記顕微鏡と
前記１次元光センサをガラスパイプの軸方向に動かす一
軸ステージと、前記１次元光センサに結像するガラスパ
イプの端面の像の内周上の空気とガラスの界面および面
取り部分と他の部分との光強度差がもっとも大きくなる
位置に前記一軸ステージを移動し、前記１次元光センサ
に結像するガラスパイプの端面の像の光強度が小さく暗
い部分の幅によりガラスパイプの面取りが適正か否かを
判断する制御装置とを含むことを特徴とするガラスパイ
プ端面面取り検査装置。1. A light source, a microscope for observing the inner peripheral chamfer of the glass pipe from the axial direction of the glass pipe which is transmitted and illuminated by the light collected from the light source, and connected to an eyepiece of the microscope. A one-dimensional stage for moving the microscope and the one-dimensional optical sensor in the axial direction of the glass pipe; and air and glass on the inner circumference of the image of the end face of the glass pipe formed on the one-dimensional optical sensor. The uniaxial stage is moved to a position where the light intensity difference between the interface and the chamfered portion and the other portion is the largest, and the light intensity of the image of the end surface of the glass pipe formed on the one-dimensional optical sensor is small and the dark portion is dark. A control device for determining whether or not the chamfering of the glass pipe is appropriate based on the width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP486991A JP2600500B2 (en) | 1991-01-21 | 1991-01-21 | Glass pipe end chamfering inspection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP486991A JP2600500B2 (en) | 1991-01-21 | 1991-01-21 | Glass pipe end chamfering inspection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04236309A JPH04236309A (en) | 1992-08-25 |
| JP2600500B2 true JP2600500B2 (en) | 1997-04-16 |
Family
ID=11595683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP486991A Expired - Lifetime JP2600500B2 (en) | 1991-01-21 | 1991-01-21 | Glass pipe end chamfering inspection equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2600500B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6668959B2 (en) * | 2016-06-07 | 2020-03-18 | 日本電気硝子株式会社 | Tube glass inspection apparatus, tube glass inspection method, tube glass processing apparatus, and tube glass manufacturing method |
-
1991
- 1991-01-21 JP JP486991A patent/JP2600500B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04236309A (en) | 1992-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19961119 |