GB913475A - Improvements in or relating to cathode-ray tubes - Google Patents
Improvements in or relating to cathode-ray tubesInfo
- Publication number
- GB913475A GB913475A GB13543/60A GB1354360A GB913475A GB 913475 A GB913475 A GB 913475A GB 13543/60 A GB13543/60 A GB 13543/60A GB 1354360 A GB1354360 A GB 1354360A GB 913475 A GB913475 A GB 913475A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spherical
- electrodes
- cathode
- screen
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005684 electric field Effects 0.000 abstract 2
- 230000001133 acceleration Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
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
- H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
Abstract
913,475. Cathode-ray tubes. ABTRONICS Inc. April 19, 1960 [April 16, 1959], No. 13543/60. Class 39 (1). In a cathode-ray tube, a plurality of electrodes 26, 36, 31, Fig. 2, are disposed between beam deflecting means 19 and screen 14 to establish substantially semi-spherical electrical fields symmetrically about the axis of the tube with lines of force radiating from a point on the axis between the deflecting means and the screen to provide post-deflection acceleration and additional radial deflection. As shown, the electrodes 26, 36, 31 include partspherical solid portions and part-spherical grids 51-53 having a common centre of curvature 29. The grids 51-53 may be omitted and grid 51 may be replaced by a part-spherical film of secondary electron-emissive material to obtain increased beam current. In an alternative arrangement, the beam is caused to cross the tube axis by a field produced between partspherical electrodes 61, 64, Fig. 3. Electrode 64 may be connected to screen 14 to establish a field free region within flared portion 67 of this electrode. The spherical electrical fields may be distorted slightly by variation of electrode shapes or potentials to compensate for distortions which might otherwise occur.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US806886A US3042832A (en) | 1959-04-16 | 1959-04-16 | High-sensitivity cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB913475A true GB913475A (en) | 1962-12-19 |
Family
ID=25195054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13543/60A Expired GB913475A (en) | 1959-04-16 | 1960-04-19 | Improvements in or relating to cathode-ray tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3042832A (en) |
| DE (1) | DE1222170B (en) |
| GB (1) | GB913475A (en) |
| NL (1) | NL250540A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL267802A (en) * | 1960-08-08 | |||
| FR1455405A (en) * | 1965-09-03 | 1966-04-01 | Csf | Improvements to cathode ray tubes incorporating a quadrupole electronic lens and a post-acceleration device |
| US3313969A (en) * | 1966-03-25 | 1967-04-11 | Boeing Co | Charged particle deflecting apparatus having hemispherical electrodes |
| GB1227828A (en) * | 1967-07-18 | 1971-04-07 | ||
| US3617909A (en) * | 1969-12-23 | 1971-11-02 | Us Army | Electrostatic lens and feed-through |
| US3717786A (en) * | 1970-07-20 | 1973-02-20 | Tektronix Inc | Post-deflection acceleration storage tube |
| JPS5023949B1 (en) * | 1970-09-08 | 1975-08-12 | ||
| US5807832A (en) * | 1987-06-09 | 1998-09-15 | Biotech Australia Pty Limited | Oral delivery of biologically active substances bound to vitamin B12 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB452012A (en) * | 1935-02-13 | 1936-08-13 | Frederick Hermes Nicoll | Improvements in and relating to cathode ray tubes |
| FR800863A (en) * | 1935-04-19 | 1936-07-21 | Cfcmug | Electrostatic deflection system for cathode ray oscillographs |
| US2114572A (en) * | 1936-06-01 | 1938-04-19 | Radio Inventions Inc | Cathode ray ture system |
| NL97277C (en) * | 1940-03-13 | |||
| US2315367A (en) * | 1940-07-31 | 1943-03-30 | Rca Corp | Cathode-ray tube |
| GB739068A (en) * | 1952-08-09 | 1955-10-26 | Emi Ltd | Improvements in or relating to cathode ray tube arrangements |
| US2827592A (en) * | 1956-03-14 | 1958-03-18 | Du Mont Allen B Lab Inc | Post-acceleration cathode ray tube |
-
0
- NL NL250540D patent/NL250540A/xx unknown
-
1959
- 1959-04-16 US US806886A patent/US3042832A/en not_active Expired - Lifetime
-
1960
- 1960-04-16 DE DEA34447A patent/DE1222170B/en active Pending
- 1960-04-19 GB GB13543/60A patent/GB913475A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL250540A (en) | |
| DE1222170B (en) | 1966-08-04 |
| US3042832A (en) | 1962-07-03 |
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