BE725861A - - Google Patents
Info
- Publication number
- BE725861A BE725861A BE725861DA BE725861A BE 725861 A BE725861 A BE 725861A BE 725861D A BE725861D A BE 725861DA BE 725861 A BE725861 A BE 725861A
- Authority
- BE
- Belgium
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
- H01J29/62—Electrostatic lenses
- H01J29/626—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields
- H01J29/628—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields co-operating with or closely associated to an electron gun
-
- 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
- H01J29/48—Electron guns
- H01J29/485—Construction of the gun or of parts thereof
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6717636A NL6717636A (en) | 1967-12-22 | 1967-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE725861A true BE725861A (en) | 1969-06-20 |
Family
ID=19802089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE725861D BE725861A (en) | 1967-12-22 | 1968-12-20 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3497763A (en) |
| BE (1) | BE725861A (en) |
| DE (1) | DE1812024A1 (en) |
| FR (1) | FR1596367A (en) |
| GB (1) | GB1177319A (en) |
| NL (1) | NL6717636A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1180966B (en) * | 1959-11-10 | 1964-11-05 | Robert Thomas Lewis | Frame for films, especially slides |
| DE1284656B (en) * | 1964-03-03 | 1968-12-05 | Philipp Hans Juergen | Change frame for slides |
| JPS4819097B1 (en) * | 1969-07-23 | 1973-06-11 | ||
| US4130775A (en) * | 1977-01-17 | 1978-12-19 | Tektronix, Inc. | Charge image charge transfer cathode ray tube having a scan expansion electron lens system and collimation electrode means |
| NL178374C (en) * | 1977-11-24 | 1986-03-03 | Philips Nv | ELECTRON RADIUS TUBE WITH NON-ROTATION SYMETRIC ELECTRON LENS BETWEEN FIRST AND SECOND GRID. |
| NL175002C (en) * | 1977-11-24 | 1984-09-03 | Philips Nv | CATHODE JET TUBE WITH AT LEAST AN ELECTRON GUN. |
| US4399388A (en) * | 1980-10-16 | 1983-08-16 | Tokyo Shibaura Denki Kabushiki Kaisha | Picture tube with an electron gun having non-circular aperture |
| US4558253A (en) * | 1983-04-18 | 1985-12-10 | Rca Corporation | Color picture tube having an inline electron gun with asymmetric focusing lens |
| US4608515A (en) * | 1985-04-30 | 1986-08-26 | Rca Corporation | Cathode-ray tube having a screen grid with asymmetric beam focusing means and refraction lens means formed therein |
| FR2705164B1 (en) * | 1993-05-10 | 1995-07-13 | Thomson Tubes & Displays | Color image tube with electron guns in line with astigmatic lenses. |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2919381A (en) * | 1956-07-25 | 1959-12-29 | Farrand Optical Co Inc | Electron lens |
| NL108855C (en) * | 1956-09-07 | |||
| US2988660A (en) * | 1958-07-02 | 1961-06-13 | Gen Dynamics Corp | Electro optical system in a cathode ray tube |
| US3349269A (en) * | 1963-11-29 | 1967-10-24 | Stromberg Carlson Corp | Astigmatic lens arrangement for cathode ray tubes |
| US3373310A (en) * | 1964-07-17 | 1968-03-12 | E H Res Lab Inc | Cathode ray tube selective deflection amplifier using a quadrupole lens of critical length |
| US3376449A (en) * | 1967-01-20 | 1968-04-02 | Ion Physics Corp | Electrostatic quadrapole lens assembly with transverse intermediate termination elements of resistive material joining together the quadrapole electrodes for preventing beam aberration |
-
1967
- 1967-12-22 NL NL6717636A patent/NL6717636A/xx unknown
-
1968
- 1968-11-30 DE DE19681812024 patent/DE1812024A1/en active Pending
- 1968-12-06 US US781746A patent/US3497763A/en not_active Expired - Lifetime
- 1968-12-19 GB GB60381/68A patent/GB1177319A/en not_active Expired
- 1968-12-20 BE BE725861D patent/BE725861A/xx unknown
- 1968-12-23 FR FR1596367D patent/FR1596367A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3497763A (en) | 1970-02-24 |
| DE1812024A1 (en) | 1969-12-04 |
| FR1596367A (en) | 1970-06-15 |
| GB1177319A (en) | 1970-01-07 |
| NL6717636A (en) | 1969-06-24 |