NL190741A - - Google Patents
Info
- Publication number
- NL190741A NL190741A NL190741DA NL190741A NL 190741 A NL190741 A NL 190741A NL 190741D A NL190741D A NL 190741DA NL 190741 A NL190741 A NL 190741A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/64—Magnetic lenses
- H01J29/66—Magnetic lenses using electromagnetic means only
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electron Sources, Ion Sources (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2859363X | 1953-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL190741A true NL190741A (en:Method) |
Family
ID=7999854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL190741D NL190741A (en:Method) | 1953-09-24 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2859363A (en:Method) |
| NL (1) | NL190741A (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3984687A (en) * | 1975-03-17 | 1976-10-05 | International Business Machines Corporation | Shielded magnetic lens and deflection yoke structure for electron beam column |
| JPS5842935B2 (ja) * | 1978-04-07 | 1983-09-22 | 日本電子株式会社 | 走査電子顕微鏡等の対物レンズ |
| JPS5945171B2 (ja) * | 1979-12-28 | 1984-11-05 | 日本電子株式会社 | 電子レンズ |
| US4555646A (en) * | 1981-10-07 | 1985-11-26 | Varian Associates, Inc. | Adjustable beam permanent-magnet-focused linear-beam microwave tube |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2369782A (en) * | 1943-04-01 | 1945-02-20 | Rca Corp | Electron lens system |
| US2418349A (en) * | 1945-12-13 | 1947-04-01 | Rca Corp | Method of and means for correcting for distortion in electron lens systems |
| US2469165A (en) * | 1946-10-29 | 1949-05-03 | Rca Corp | Correction device for electron lenses |
-
0
- NL NL190741D patent/NL190741A/xx unknown
-
1954
- 1954-09-16 US US456463A patent/US2859363A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2859363A (en) | 1958-11-04 |