BE429637A - - Google Patents
Info
- Publication number
- BE429637A BE429637A BE429637DA BE429637A BE 429637 A BE429637 A BE 429637A BE 429637D A BE429637D A BE 429637DA BE 429637 A BE429637 A BE 429637A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
- H01J37/10—Lenses
- H01J37/14—Lenses magnetic
- H01J37/141—Electromagnetic lenses
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Eyeglasses (AREA)
- Electron Beam Exposure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE517680X | 1937-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE429637A true BE429637A (en:Method) |
Family
ID=6549644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE429637D BE429637A (en:Method) | 1937-08-16 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2209669A (en:Method) |
| BE (1) | BE429637A (en:Method) |
| FR (1) | FR841823A (en:Method) |
| GB (1) | GB517680A (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE759837C (de) * | 1940-05-07 | 1954-06-28 | Manfred Von Ardenne | Magnetische Linse fuer Elektronenmikroskope mit einem unsymmetrisch zur Spulenmitte liegenden Polschuhsystem |
| US2418432A (en) * | 1944-05-01 | 1947-04-01 | Rca Corp | Magnetic electron lens system |
| US2648036A (en) * | 1946-03-12 | 1953-08-04 | Us Navy | Adjustable focusing coil |
| US3509503A (en) * | 1967-02-27 | 1970-04-28 | Nippon Electron Optics Lab | Objective lens pole pieces |
| US4541890A (en) * | 1982-06-01 | 1985-09-17 | International Business Machines Corporation | Hall ion generator for working surfaces with a low energy high intensity ion beam |
-
0
- BE BE429637D patent/BE429637A/xx unknown
-
1938
- 1938-08-03 GB GB22983/38A patent/GB517680A/en not_active Expired
- 1938-08-06 US US223458A patent/US2209669A/en not_active Expired - Lifetime
- 1938-08-08 FR FR841823D patent/FR841823A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2209669A (en) | 1940-07-30 |
| GB517680A (en) | 1940-02-06 |
| FR841823A (fr) | 1939-05-31 |