GB456331A - Improvements in or relating to braun tubes, preferably for television purposes - Google Patents
Improvements in or relating to braun tubes, preferably for television purposesInfo
- Publication number
- GB456331A GB456331A GB25754/36A GB2575436A GB456331A GB 456331 A GB456331 A GB 456331A GB 25754/36 A GB25754/36 A GB 25754/36A GB 2575436 A GB2575436 A GB 2575436A GB 456331 A GB456331 A GB 456331A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plates
- anode
- coating
- march
- reverse phase
- 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
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
456,331. Cathode ray tubes. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. March 4, 1935, No. 25754/36. Convention date, March 31, 1934. Addition to 423,427 and divided out of 457,757 and 6689/35 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 4, 1935. [Class 39 (i)] Cathode-ray tubes for television &c. and having one or both pairs of deflecting plates 13 .. 16 operated in reverse phase and negatively biassed relatively to the anode 12 as described in the parent Specification are provided with a coating 19 on the wall of the tube. The coating extends from near the anode 12 to near the picture screen and may be connected to the anode by a spring. The operation of the plates in reverse phase and ta negative bias may be carried out by transformers 35, 40 with centre tappings connected to adjustable tappings on a potentiometer 42 and enables the disturbing effect of the plates on the field of the electric lens 9, 12 to be compensated or the plates to act as additional concentrating means. The coating 19 ensures that the electrons after deflections again reach anode potential. Specifications 447,070, 452,650, and 457,757 are referred to.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2137353X | 1934-03-03 | ||
| DE456331X | 1934-03-31 | ||
| US8660A US2137353A (en) | 1934-03-03 | 1935-02-28 | Television tube |
| US213731A US2197899A (en) | 1934-03-03 | 1938-06-15 | Television tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB456331A true GB456331A (en) | 1936-11-04 |
Family
ID=32074463
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25754/36A Expired GB456331A (en) | 1934-03-03 | 1935-03-04 | Improvements in or relating to braun tubes, preferably for television purposes |
| GB6688/35A Expired GB457757A (en) | 1934-03-03 | 1935-03-04 | Television cathode ray tube |
| GB20744/36A Expired GB457846A (en) | 1934-03-03 | 1935-03-04 | Improvements in or relating to television tubes |
| GB25752/36A Expired GB457848A (en) | 1934-03-03 | 1935-03-04 | Improvements in or relating to television cathode ray tubes |
| GB25753/36A Expired GB456717A (en) | 1934-03-03 | 1935-03-04 | Improvements in or relating to braun tubes and circuits therefore, preferably for television purposes |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6688/35A Expired GB457757A (en) | 1934-03-03 | 1935-03-04 | Television cathode ray tube |
| GB20744/36A Expired GB457846A (en) | 1934-03-03 | 1935-03-04 | Improvements in or relating to television tubes |
| GB25752/36A Expired GB457848A (en) | 1934-03-03 | 1935-03-04 | Improvements in or relating to television cathode ray tubes |
| GB25753/36A Expired GB456717A (en) | 1934-03-03 | 1935-03-04 | Improvements in or relating to braun tubes and circuits therefore, preferably for television purposes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2197899A (en) |
| BE (2) | BE408183A (en) |
| FR (1) | FR786632A (en) |
| GB (5) | GB456331A (en) |
| NL (1) | NL51359C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE766496C (en) * | 1936-01-29 | 1952-04-10 | Aeg | Electron-optical image converter |
| US2572858A (en) * | 1947-06-03 | 1951-10-30 | Sylvania Electric Prod | Electron optical system |
-
0
- BE BE408184D patent/BE408184A/xx unknown
- BE BE408183D patent/BE408183A/xx unknown
- NL NL51359D patent/NL51359C/xx active
-
1935
- 1935-03-02 FR FR786632D patent/FR786632A/en not_active Expired
- 1935-03-04 GB GB25754/36A patent/GB456331A/en not_active Expired
- 1935-03-04 GB GB6688/35A patent/GB457757A/en not_active Expired
- 1935-03-04 GB GB20744/36A patent/GB457846A/en not_active Expired
- 1935-03-04 GB GB25752/36A patent/GB457848A/en not_active Expired
- 1935-03-04 GB GB25753/36A patent/GB456717A/en not_active Expired
-
1938
- 1938-06-15 US US213731A patent/US2197899A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2197899A (en) | 1940-04-23 |
| NL51359C (en) | |
| GB457757A (en) | 1936-12-04 |
| BE408184A (en) | |
| FR786632A (en) | 1935-09-06 |
| BE408183A (en) | |
| GB457848A (en) | 1936-12-04 |
| GB457846A (en) | 1936-12-04 |
| GB456717A (en) | 1936-11-04 |
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