GB485111A - Improvements in or relating to cathode-ray tubes - Google Patents
Improvements in or relating to cathode-ray tubesInfo
- Publication number
- GB485111A GB485111A GB3122436A GB3122436A GB485111A GB 485111 A GB485111 A GB 485111A GB 3122436 A GB3122436 A GB 3122436A GB 3122436 A GB3122436 A GB 3122436A GB 485111 A GB485111 A GB 485111A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- electrode
- ray tubes
- relating
- external
- 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
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
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
-
- 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
- H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
Landscapes
- Cold Cathode And The Manufacture (AREA)
Abstract
485,111. Cathode-ray tubes. FERRANTI, Ltd., and WILSON, J. C. Nov. 16, 1936, No. 31224. [Class 39 (i)] The modulating electrode e, Fig. 1, is of conical shape and of circular cross-section. The cathode b of hair-pin shape has the bight disposed just within the aperture f at the small end of the electrode e, the base of which is disposed towards the anode c. In the modification shown in Fig. 2, the external and internal surfaces of the electrode e are generated by the revolution about an axis of two exponential curves, the external surface being concave.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3122436A GB485111A (en) | 1936-11-16 | 1936-11-16 | Improvements in or relating to cathode-ray tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3122436A GB485111A (en) | 1936-11-16 | 1936-11-16 | Improvements in or relating to cathode-ray tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB485111A true GB485111A (en) | 1938-05-16 |
Family
ID=10319889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3122436A Expired GB485111A (en) | 1936-11-16 | 1936-11-16 | Improvements in or relating to cathode-ray tubes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB485111A (en) |
-
1936
- 1936-11-16 GB GB3122436A patent/GB485111A/en not_active Expired
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