NL49865C - - Google Patents
Info
- Publication number
- NL49865C NL49865C NL49865DA NL49865C NL 49865 C NL49865 C NL 49865C NL 49865D A NL49865D A NL 49865DA NL 49865 C NL49865 C NL 49865C
- Authority
- NL
- Netherlands
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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Electron Beam Exposure (AREA)
- Electron Sources, Ion Sources (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE479420X | 1936-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL49865C true NL49865C (en:Method) |
Family
ID=6542410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL49865D NL49865C (en:Method) | 1936-08-05 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2202620A (en:Method) |
| GB (1) | GB479420A (en:Method) |
| NL (1) | NL49865C (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3387158A (en) * | 1965-04-14 | 1968-06-04 | Sony Corp | Focus magnet assembly for cathode ray tubes |
| GB2195203A (en) * | 1986-09-12 | 1988-03-30 | Philips Electronic Associated | Magnetic lens assembly and electron beam pattern generator |
-
0
- NL NL49865D patent/NL49865C/xx active
-
1937
- 1937-08-05 GB GB21632/37A patent/GB479420A/en not_active Expired
- 1937-08-13 US US158875A patent/US2202620A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB479420A (en) | 1938-02-04 |
| US2202620A (en) | 1940-05-28 |