JPH049252B2 - - Google Patents
Info
- Publication number
- JPH049252B2 JPH049252B2 JP22867682A JP22867682A JPH049252B2 JP H049252 B2 JPH049252 B2 JP H049252B2 JP 22867682 A JP22867682 A JP 22867682A JP 22867682 A JP22867682 A JP 22867682A JP H049252 B2 JPH049252 B2 JP H049252B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- hole
- printed board
- defect
- defect detection
- 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
Links
- 230000007547 defect Effects 0.000 claims description 48
- 239000000758 substrate Substances 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 26
- 238000007689 inspection Methods 0.000 claims description 19
- 238000005286 illumination Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 description 23
- 230000002950 deficient Effects 0.000 description 12
- 239000010410 layer Substances 0.000 description 12
- 239000004020 conductor Substances 0.000 description 11
- 238000007747 plating Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22867682A JPS59125695A (ja) | 1982-12-28 | 1982-12-28 | プリント板のスル−ホ−ル検査装置 |
| US06/554,543 US4560273A (en) | 1982-11-30 | 1983-11-23 | Method and apparatus for inspecting plated through holes in printed circuit boards |
| DE8383307291T DE3377527D1 (en) | 1982-11-30 | 1983-11-30 | Method and apparatus for inspecting plated through holes in printed circuit boards |
| EP83307291A EP0111404B1 (en) | 1982-11-30 | 1983-11-30 | Method and apparatus for inspecting plated through holes in printed circuit boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22867682A JPS59125695A (ja) | 1982-12-28 | 1982-12-28 | プリント板のスル−ホ−ル検査装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59125695A JPS59125695A (ja) | 1984-07-20 |
| JPH049252B2 true JPH049252B2 (enrdf_load_stackoverflow) | 1992-02-19 |
Family
ID=16880061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22867682A Granted JPS59125695A (ja) | 1982-11-30 | 1982-12-28 | プリント板のスル−ホ−ル検査装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59125695A (enrdf_load_stackoverflow) |
-
1982
- 1982-12-28 JP JP22867682A patent/JPS59125695A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59125695A (ja) | 1984-07-20 |
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