GB446254A - Improvements in or relating to television and like receivers - Google Patents
Improvements in or relating to television and like receiversInfo
- Publication number
- GB446254A GB446254A GB2155434A GB2155434A GB446254A GB 446254 A GB446254 A GB 446254A GB 2155434 A GB2155434 A GB 2155434A GB 2155434 A GB2155434 A GB 2155434A GB 446254 A GB446254 A GB 446254A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- ray
- cathode
- picture
- varied
- 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
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
- H04N5/7425—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
446,254. Cathode-ray tubes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 23, 1934, No. 21554. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 28, 1935]. [Classes 39 (i) and 40 (iii)] The screen of a cathode-ray tube for television &c. reception comprises a substance having optical characteristics varied by the cathode-ray to control radiation from a local source and so produce the picture. Light from an arc lamp 9 and filter 13 passes successively through a condenser 10, the screen 8 and an objective 11 before reaching the viewing screen 12. The screen 8 is of, or prepared with, phosphorus and absorbs light according to the intensity of the scanning cathode-ray 7. In a modification, the lamp 9 is a source of ultra-violet rays and the screen 12 is fluorescent. In other modifications, the refractive index of the screen 8, which may be a mica sheet, is varied by heating due to the ray 7 and these variations are converted into the picture by the Toepler- Schlieren method or by inserting the screen 8 between crossed Nicol prisms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2155434A GB446254A (en) | 1934-07-23 | 1934-07-23 | Improvements in or relating to television and like receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2155434A GB446254A (en) | 1934-07-23 | 1934-07-23 | Improvements in or relating to television and like receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB446254A true GB446254A (en) | 1935-01-28 |
Family
ID=10164852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2155434A Expired GB446254A (en) | 1934-07-23 | 1934-07-23 | Improvements in or relating to television and like receivers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB446254A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE887520C (en) * | 1936-07-09 | 1953-08-24 | Pierre Marie Gabriel Toulon | Receiving arrangement for the reproduction of televised images |
-
1934
- 1934-07-23 GB GB2155434A patent/GB446254A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE887520C (en) * | 1936-07-09 | 1953-08-24 | Pierre Marie Gabriel Toulon | Receiving arrangement for the reproduction of televised images |
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