JPH0215248Y2 - - Google Patents
Info
- Publication number
- JPH0215248Y2 JPH0215248Y2 JP12557185U JP12557185U JPH0215248Y2 JP H0215248 Y2 JPH0215248 Y2 JP H0215248Y2 JP 12557185 U JP12557185 U JP 12557185U JP 12557185 U JP12557185 U JP 12557185U JP H0215248 Y2 JPH0215248 Y2 JP H0215248Y2
- Authority
- JP
- Japan
- Prior art keywords
- holder
- guide
- filament
- annular groove
- wehnelt electrode
- 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
- 238000010894 electron beam technology Methods 0.000 claims description 16
- 239000012212 insulator Substances 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Electron Sources, Ion Sources (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12557185U JPH0215248Y2 (OSRAM) | 1985-08-16 | 1985-08-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12557185U JPH0215248Y2 (OSRAM) | 1985-08-16 | 1985-08-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6233156U JPS6233156U (OSRAM) | 1987-02-27 |
| JPH0215248Y2 true JPH0215248Y2 (OSRAM) | 1990-04-24 |
Family
ID=31018582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12557185U Expired JPH0215248Y2 (OSRAM) | 1985-08-16 | 1985-08-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0215248Y2 (OSRAM) |
-
1985
- 1985-08-16 JP JP12557185U patent/JPH0215248Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6233156U (OSRAM) | 1987-02-27 |
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