GB421603A - Improvements relating to cathode-ray tubes for television - Google Patents
Improvements relating to cathode-ray tubes for televisionInfo
- Publication number
- GB421603A GB421603A GB18120/33A GB1812033A GB421603A GB 421603 A GB421603 A GB 421603A GB 18120/33 A GB18120/33 A GB 18120/33A GB 1812033 A GB1812033 A GB 1812033A GB 421603 A GB421603 A GB 421603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deflecting
- plates
- potential
- pair
- distortion
- 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
- 238000007689 inspection Methods 0.000 abstract 1
- 238000012216 screening 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
-
- 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
- H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
- H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution 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
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/74—Deflecting by electric fields only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/26—Push-pull amplifiers; Phase-splitters therefor
- H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
- H04N3/04—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture also apertures covered by lenses
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Details Of Television Scanning (AREA)
- Particle Accelerators (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
421,603. Television. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, and SCHLESINGER, K., 39, Friedrichstrasse, Friedrichshagen, both in Berlin. June 26, 1933, Nos. 18120 and 18121. Convention dates, June 27, 1932 and Aug. 12, 1932. [Classes 39 (i) and 40 (iii)] Distortion due to current between a cathoderay and deflecting-plates is eliminated (a) by reducing the resistance of the circuit of the deflecting plates to such a value that the potential developed across it by the leakage current is less than 1 per cent of the maximum deflection potential, or (b) by making the potential of the deflecting plates at most equal to that of the cathode rays, or (c) by placing in front of the deflecting plates 2 an openwork screening grid 11, which may be cylindrical or flat and negatively biassed or conductively connected to the earthed deflecting-plate. When a diaphragm with a negative potential relatively to the anode is provided between the two pairs of deflecting-plates, Fig. 5, the diaphragm is so dimensioned that in the position of maximum deflection the ray is still sufficiently away from the edge to avoid edge field distortion. To avoid image-form distortion from differential deflecting-action by the second pair of deflecting plates 33, 34, due to the ray leaving the first pair at speeds varying with the deflection, the second pair of plates are tilted. The Specification as open to inspection under Sect. 91 describes also energizing the deflecting- plates in opposite phase. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE421603X | 1932-06-27 | ||
| DE1933R0089182 DE694605C (en) | 1932-06-27 | 1933-11-11 | Method for deflecting the cathode ray in cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB421603A true GB421603A (en) | 1934-12-27 |
Family
ID=40874717
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18120/33A Expired GB421603A (en) | 1932-06-27 | 1933-06-26 | Improvements relating to cathode-ray tubes for television |
| GB30462/34A Expired GB423427A (en) | 1932-06-27 | 1933-06-26 | Improvements relating to cathode-ray tubes more particularly for television |
| GB32402/34A Expired GB447070A (en) | 1932-06-27 | 1934-11-10 | Deflecting methods for cathode ray tubes |
| GB18970/36A Expired GB452844A (en) | 1932-06-27 | 1934-11-26 | Improvements in or relating to cathode ray tubes |
| GB33882/34A Expired GB452650A (en) | 1932-06-27 | 1934-11-26 | Improvements in and relating to cathode ray tubes |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30462/34A Expired GB423427A (en) | 1932-06-27 | 1933-06-26 | Improvements relating to cathode-ray tubes more particularly for television |
| GB32402/34A Expired GB447070A (en) | 1932-06-27 | 1934-11-10 | Deflecting methods for cathode ray tubes |
| GB18970/36A Expired GB452844A (en) | 1932-06-27 | 1934-11-26 | Improvements in or relating to cathode ray tubes |
| GB33882/34A Expired GB452650A (en) | 1932-06-27 | 1934-11-26 | Improvements in and relating to cathode ray tubes |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2226991A (en) |
| BE (1) | BE406492A (en) |
| DE (1) | DE694605C (en) |
| FR (4) | FR757658A (en) |
| GB (5) | GB421603A (en) |
| NL (1) | NL46049C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE739047C (en) * | 1935-09-30 | 1943-09-09 | Fernseh Gmbh | Deflection coil system for electron beam tubes |
| DE923686C (en) * | 1935-11-13 | 1955-02-21 | Interessengemeinschaft Fuer Ru | Deflection systems for cathode ray tubes |
| GB468394A (en) * | 1936-01-14 | 1937-07-05 | Gen Electric Co Ltd | Improvements in time bases for cathode ray tubes |
| DE909234C (en) * | 1936-12-16 | 1954-04-15 | Zeiss Ikon Ag | Arrangement to achieve a distortion-free deflection geometry with Braun tubes |
| DE747207C (en) * | 1937-09-03 | 1944-09-15 | Lorenz C Ag | Toggle circuit for generating symmetrical deflection voltages or deflection currents |
| DE756688C (en) * | 1937-09-18 | 1954-01-25 | Aeg | Braun tubes, especially for measuring or television purposes, with two or more pairs of deflector plates rotated against one another |
| US2597363A (en) * | 1951-06-29 | 1952-05-20 | Ibm | Cathode-ray storage tube |
| US2745038A (en) * | 1954-10-26 | 1956-05-08 | Rca Corp | Semiconductor signal translating circuit |
| US3873878A (en) * | 1970-07-31 | 1975-03-25 | Tektronix Inc | Electron gun with auxilliary anode nearer to grid than to normal anode |
| US4933598A (en) * | 1986-12-27 | 1990-06-12 | Sony Corporation | Cathode-ray tube with internal insulated electrical conductors |
-
1933
- 1933-06-26 GB GB18120/33A patent/GB421603A/en not_active Expired
- 1933-06-26 GB GB30462/34A patent/GB423427A/en not_active Expired
- 1933-06-27 FR FR757658D patent/FR757658A/en not_active Expired
- 1933-11-11 DE DE1933R0089182 patent/DE694605C/en not_active Expired
-
1934
- 1934-11-08 NL NL71353A patent/NL46049C/xx active
- 1934-11-09 FR FR45389D patent/FR45389E/en not_active Expired
- 1934-11-10 GB GB32402/34A patent/GB447070A/en not_active Expired
- 1934-11-21 US US754048A patent/US2226991A/en not_active Expired - Lifetime
- 1934-11-26 GB GB18970/36A patent/GB452844A/en not_active Expired
- 1934-11-26 GB GB33882/34A patent/GB452650A/en not_active Expired
- 1934-11-26 FR FR45728D patent/FR45728E/en not_active Expired
- 1934-11-27 BE BE406492D patent/BE406492A/xx unknown
-
1935
- 1935-03-02 FR FR46068D patent/FR46068E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR45728E (en) | 1935-11-18 |
| BE406492A (en) | 1934-12-31 |
| FR757658A (en) | 1933-12-29 |
| GB447070A (en) | 1936-05-11 |
| GB452650A (en) | 1936-08-26 |
| NL46049C (en) | 1939-07-15 |
| US2226991A (en) | 1940-12-31 |
| GB423427A (en) | 1935-01-28 |
| GB452844A (en) | 1936-08-26 |
| DE694605C (en) | 1940-08-05 |
| FR46068E (en) | 1936-02-15 |
| FR45389E (en) | 1935-07-26 |
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