GB426138A - Braun tube - Google Patents
Braun tubeInfo
- Publication number
- GB426138A GB426138A GB26800/33A GB2680033A GB426138A GB 426138 A GB426138 A GB 426138A GB 26800/33 A GB26800/33 A GB 26800/33A GB 2680033 A GB2680033 A GB 2680033A GB 426138 A GB426138 A GB 426138A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rays
- anode
- screen
- produced
- tube
- 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
- H01J29/48—Electron guns
- H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/48—Electron guns
- H01J2229/50—Plurality of guns or beams
- H01J2229/507—Multi-beam groups, e.g. number of beams greater than number of cathodes
Landscapes
- Electrolytic Production Of Metals (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
426,138. Cathode - ray tubes. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, and SCHLESINGER, K., 39, Friedrichstrasse, Friedrichshagen, both in Berlin. Sept. 29, 1933, Nos. 26800 and 26801. Convention dates, Oct. 1, 1932 and Sept. 8, 1933. [Classes 39 (i) and 40 (iii)] [See also Group XXXVI] Braun tubes for use in television or as oscillographs have two or more cathode rays which are produced by a corresponding number of cathodes, are parallel to the axis of the tube between the cathodes and the deflecting devices, and are predeflected on entry into the deflecting devices so that they produce independent images on different parts of the picture-receiving screen of the tube and cannot be deflected outside these parts. The electrode systems for the separate rays have corresponding parts connected together or structurally united. Two rays may be produced by cathodes 2, 2<1>, Wehnelt cylinders 7, 71, a low-voltage anode 9 with apertures 11, 111 and preferably with concentrating cylinders 10, 10<1> and a high-voltage anode 13 with apertures 19, 19<1>. One plate 20, 201 of the first pair of deflecting plates for each ray is negatively biassed so that the rays are predeflected to scan the separate areas a, b of the screen. The other plates 22, 23 of this first pair are inclined at 20-60 to the axis of the tube. The second pair of plates 26, 27 are common to the rays and curved as shown. Current and potential curves of the same operation may thus be produced simultaneously on the areas a, b. In colour television, separate images in basic colours produced on the different parts of the screen are superimposed on a viewing screen by inclined reflectors, the deflecting systems for the different rays being connected to the same oscillation generators. Mutual repulsion of the rays when they are moving slowly before passing the anode 9 is compensated by the attraction of auxiliary electrodes such as one or more knife-edges 33 on the anode 9. Semi-cylinders 32, 32<1> screen the rays from the high-voltage leads 31. The cathodes may each have an indirectly-heated equipotential surface of hollow reflector form with the emissive area at the centre. Wehnelt cylinders may be arranged between the anodes 9, 13 and maintained slightly negative relatively to the anode 9. The predeflection of the ray avoids the " ion-cross " effect in gas-filled tubes and may be produced before entry into the plates 20, 20<1>, 22, 23. A ring-shaped auxiliary electrode at or above the potential of the anode 13 may be placed above the plates 26, 27 and part of the wall of the tube between the auxiliary electrode and the screen may be metallized and made slightly negative with respect to the auxiliary electrode. A coating on the wall of the tube at constant or earth potential prevents disturbances due to the action on one ray of wall charges produced by the other ray. The Specification as open to inspection under Sect. 91 comprises also a modification in which the rays are screened by cylindrical elements below the anode 9. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE426138X | 1932-10-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB426138A true GB426138A (en) | 1935-03-28 |
Family
ID=6477152
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22182/34A Expired GB427765A (en) | 1932-10-01 | 1933-09-29 | Braun tube |
GB26800/33A Expired GB426138A (en) | 1932-10-01 | 1933-09-29 | Braun tube |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22182/34A Expired GB427765A (en) | 1932-10-01 | 1933-09-29 | Braun tube |
Country Status (3)
Country | Link |
---|---|
US (1) | US2083203A (en) |
FR (1) | FR762225A (en) |
GB (2) | GB427765A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746453C (en) * | 1940-10-26 | 1944-08-03 | Aeg | Braun tube with two systems for generating and deflecting an electron beam each |
DE1002477B (en) * | 1951-11-28 | 1957-02-14 | Philips Nv | Electron beam tubes with two or more electrode systems |
DE1228346B (en) * | 1961-07-12 | 1966-11-10 | Werk Signal Sicherungstech Veb | Multiple cathode ray tubes for displaying numbers or letters |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734147A (en) * | 1956-02-07 | beckers | ||
DE747903C (en) * | 1935-12-14 | 1953-02-23 | Julius Pintsch K G | Tube arrangement for fanning ultra high frequency electromagnetic vibrations |
US2440250A (en) * | 1940-04-04 | 1948-04-27 | Int Standard Electric Corp | Radio location system |
US2471373A (en) * | 1942-09-30 | 1949-05-24 | Rca Corp | Pulse echo recognition system |
FR902126A (en) * | 1943-06-11 | 1945-08-20 | Fast telegraph device | |
US2615087A (en) * | 1944-04-17 | 1952-10-21 | Rines Robert Harvey | Color television system |
US2480848A (en) * | 1944-07-11 | 1949-09-06 | Geer Charles Willard | Color television device |
NL75746C (en) * | 1945-07-07 | |||
FR957706A (en) * | 1946-12-26 | 1950-02-24 | ||
US2560994A (en) * | 1948-04-05 | 1951-07-17 | Color Television Inc | Scanning system for motion picture films |
NL75718C (en) * | 1948-07-09 | 1954-08-16 | ||
US2520728A (en) * | 1949-06-09 | 1950-08-29 | Du Mont Allen B Lab Inc | Cathode-ray tube deflection sensitivity correction circuit |
US2660612A (en) * | 1949-12-14 | 1953-11-24 | Jr Frank M Wood | Color television receiving system |
US2999185A (en) * | 1950-01-09 | 1961-09-05 | Harry R Lubcke | Television device |
CA523198A (en) * | 1951-02-15 | 1956-03-27 | Electric And Musical Industries Limited | Cathode ray tubes |
US3011090A (en) * | 1952-06-24 | 1961-11-28 | Rca Corp | Plural beam tube |
US2678405A (en) * | 1952-07-23 | 1954-05-11 | Rca Corp | Multibeam convergence controlling system |
US3037136A (en) * | 1953-05-04 | 1962-05-29 | Fairchild Camera Instr Co | Cathode ray tube |
NL203026A (en) * | 1954-12-23 | |||
DE1051416B (en) * | 1955-01-17 | 1959-02-26 | Loewe Opta Ag | Electron beam tubes, preferably television picture tubes |
US2951244A (en) * | 1955-10-20 | 1960-08-30 | Donahue John | Three coordinate orthographic display system |
DE1156521B (en) * | 1961-09-05 | 1963-10-31 | Heraeus Gmbh W C | Electron beam gun for heating metals |
GB1101153A (en) * | 1965-07-28 | 1968-01-31 | M O Company Ltd | Improvements in or relating to cathode ray tubes |
US3624285A (en) * | 1968-08-16 | 1971-11-30 | Us Navy | High-resolution television system |
US3678318A (en) * | 1969-06-02 | 1972-07-18 | Sony Corp | Cathode ray tube having divergent deflection plates for converging three beams |
US3928785A (en) * | 1971-11-23 | 1975-12-23 | Adrian W Standaart | Single gun, multi-screen, multi-beam, multi-color cathode ray tube |
JPS5067549A (en) * | 1973-10-15 | 1975-06-06 | ||
US3890528A (en) * | 1974-03-29 | 1975-06-17 | Gte Sylvania Inc | Common focusing electrode for plurality of beams and having same plurality of internal shields |
US4754324A (en) * | 1982-02-19 | 1988-06-28 | Raytheon Company | Multi-color image display apparatus |
CA1231785A (en) * | 1982-02-19 | 1988-01-19 | Raytheon Company | Multi-color image display apparatus |
US4772095A (en) * | 1983-07-15 | 1988-09-20 | Switchcraft, Inc. | Symmetrical beamsplitter |
US4709261A (en) * | 1983-12-05 | 1987-11-24 | Raytheon Company | Color image display system for producing and combining two similarly-oriented color component images and an inverted color component image |
US4737843A (en) * | 1984-04-09 | 1988-04-12 | Raytheon Company | Color image display system for producing and combining four color component images each inverted in at least one aspect relative to the other images |
-
1933
- 1933-09-29 GB GB22182/34A patent/GB427765A/en not_active Expired
- 1933-09-29 US US691561A patent/US2083203A/en not_active Expired - Lifetime
- 1933-09-29 GB GB26800/33A patent/GB426138A/en not_active Expired
- 1933-09-30 FR FR762225D patent/FR762225A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE746453C (en) * | 1940-10-26 | 1944-08-03 | Aeg | Braun tube with two systems for generating and deflecting an electron beam each |
DE1002477B (en) * | 1951-11-28 | 1957-02-14 | Philips Nv | Electron beam tubes with two or more electrode systems |
DE1228346B (en) * | 1961-07-12 | 1966-11-10 | Werk Signal Sicherungstech Veb | Multiple cathode ray tubes for displaying numbers or letters |
Also Published As
Publication number | Publication date |
---|---|
GB427765A (en) | 1935-04-29 |
FR762225A (en) | 1934-04-07 |
US2083203A (en) | 1937-06-08 |
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