GB479471A - Improvements in or relating to cathode-ray tubes - Google Patents
Improvements in or relating to cathode-ray tubesInfo
- Publication number
- GB479471A GB479471A GB21860/36A GB2186036A GB479471A GB 479471 A GB479471 A GB 479471A GB 21860/36 A GB21860/36 A GB 21860/36A GB 2186036 A GB2186036 A GB 2186036A GB 479471 A GB479471 A GB 479471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- aug
- cathode
- electrode
- screwed
- 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
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 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
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
479,471. Cathode-ray tubes. FERNSEH AKT.-GES. Aug. 7, 1936, No. 21860. Convention date, Aug. 7, 1935. [Class 39 (i)] In a tube in which the beam is deflected magnetically in a region of low velocity, the beam is introduced into an accelerating field having equipotential surfaces convex to the screen through a tubular electrode maintained at the same potential as the negative end of the field. In the form shown in Fig. 1, the beam passes through a tubular anode 3 having an apertured spherical cap 4. The accelerating field is produced by a resistive coating 16 terminated by metallized portions 17 and 6 across which a potential drop is applied. The anode 3 is supported by an expanding ring contacting the coating 6. The beam is focused by the coil 8 which may be wound on the anode 3. A rectangular deflecting coil 20 is used. In a modification, Fig. 2, the beam is focused electrostatically by a ring electrode 11 inside thetube 3. A member 15 screwed into the recessed insulating collar 18 secures the tube 3 to its support 13, and the modulating electrode is also screwed into the collar 18.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE479471X | 1935-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB479471A true GB479471A (en) | 1938-02-07 |
Family
ID=6542419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21860/36A Expired GB479471A (en) | 1935-08-07 | 1936-08-07 | Improvements in or relating to cathode-ray tubes |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2128597A (en) |
| FR (1) | FR809279A (en) |
| GB (1) | GB479471A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB578273A (en) * | 1943-03-03 | 1946-06-21 | British Thomson Houston Co Ltd | Improvements in electron optical systems |
-
1936
- 1936-08-05 US US94433A patent/US2128597A/en not_active Expired - Lifetime
- 1936-08-07 FR FR809279D patent/FR809279A/en not_active Expired
- 1936-08-07 GB GB21860/36A patent/GB479471A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR809279A (en) | 1937-02-27 |
| US2128597A (en) | 1938-08-30 |
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