NL60423C - - Google Patents
Info
- Publication number
- NL60423C NL60423C NL96951A NL96951A NL60423C NL 60423 C NL60423 C NL 60423C NL 96951 A NL96951 A NL 96951A NL 96951 A NL96951 A NL 96951A NL 60423 C NL60423 C NL 60423C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/024—Electron guns using thermionic emission of cathode heated by electron or ion bombardment or by irradiation by other energetic beams, e.g. by laser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Solid Thermionic Cathode (AREA)
- X-Ray Techniques (AREA)
- Electron Tubes For Measurement (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2528/39A GB524240A (en) | 1939-01-25 | 1939-01-25 | Improvements in or relating to cathodes for electron discharge devices |
| GB1257939 | 1939-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL60423C true NL60423C (ko) | 1948-01-15 |
Family
ID=9741152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL96951A NL60423C (ko) | 1939-01-25 | 1940-02-16 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2239416A (ko) |
| FR (1) | FR864040A (ko) |
| GB (1) | GB524240A (ko) |
| NL (1) | NL60423C (ko) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2443324A (en) * | 1942-11-07 | 1948-06-15 | Charles Schiffman | Electronic tube |
| US2423998A (en) * | 1943-04-30 | 1947-07-15 | Farnsworth Television & Radio | Electron discharge device |
| US2852685A (en) * | 1945-01-26 | 1958-09-16 | John R Tolmie | Ion source for calutrons |
| GB624832A (en) * | 1947-07-10 | 1949-06-16 | Cinema Television Ltd | Improvements in or relating to circuits for cathode ray tubes and methods of operating the same |
| US2552047A (en) * | 1949-04-19 | 1951-05-08 | Rca Corp | Electron discharge device with temperature-stabilized cathode |
| US2635207A (en) * | 1950-12-01 | 1953-04-14 | Bell Telephone Labor Inc | Electron discharge device of the cavity resonator type |
| US2928972A (en) * | 1954-04-09 | 1960-03-15 | Varian Associates | Electron tube apparatus |
| US2815465A (en) * | 1955-05-31 | 1957-12-03 | Raytheon Mfg Co | Heater assemblies for vacuum tubes |
| US2912616A (en) * | 1956-02-07 | 1959-11-10 | Itt | Pulsed-cathode electron gun |
| US3441767A (en) * | 1967-02-01 | 1969-04-29 | Sylvania Electric Prod | Tensioned directly heated cathode having improved temperature characteristics |
| US3777200A (en) * | 1971-05-14 | 1973-12-04 | Nasa | High powered arc electrodes |
| WO2008047269A2 (en) * | 2006-10-17 | 2008-04-24 | Philips Intellectual Property & Standards Gmbh | Emitter for x-ray tubes and heating method therefore |
| JP2010251718A (ja) * | 2009-03-27 | 2010-11-04 | Canon Anelva Corp | 加熱装置の温度制御方法及び記憶媒体 |
| US9251987B2 (en) | 2012-09-14 | 2016-02-02 | General Electric Company | Emission surface for an X-ray device |
| CN211238153U (zh) | 2020-03-20 | 2020-08-11 | 西门子爱克斯射线真空技术(无锡)有限公司 | X射线管和x射线成像设备 |
-
1939
- 1939-01-25 GB GB2528/39A patent/GB524240A/en not_active Expired
-
1940
- 1940-01-24 US US315375A patent/US2239416A/en not_active Expired - Lifetime
- 1940-02-16 NL NL96951A patent/NL60423C/xx active
- 1940-02-27 FR FR864040D patent/FR864040A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2239416A (en) | 1941-04-22 |
| FR864040A (fr) | 1941-04-22 |
| GB524240A (en) | 1940-08-01 |