GB587125A - Improvements in or relating to cathode ray tubes for use in television reception - Google Patents
Improvements in or relating to cathode ray tubes for use in television receptionInfo
- Publication number
- GB587125A GB587125A GB1189044A GB1189044A GB587125A GB 587125 A GB587125 A GB 587125A GB 1189044 A GB1189044 A GB 1189044A GB 1189044 A GB1189044 A GB 1189044A GB 587125 A GB587125 A GB 587125A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- oven
- recondensation
- ray tubes
- cathode ray
- 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)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
587,125. Cathode-ray tubes. COMPANIA PARA LA FABRICACION DE CONTADORES Y MATERIAL INDUSTRIAL, SOC. ANON., and VITEAU, P. June 22, 1944, No. 11890. [Class 39 (i)] A cathode ray tube 1 for reproducing visual signals includes a small quantity of an alkaline metal, e.g. caesium, which is volatilized by heat from an electric oven 6 and condensed on a rectangular area of the flat mirror 2, cooled as indicated by circulation of air or water, forming a uniform thin opaque layer 8. The beam from the gun causes momentary evaporation at the point of impact giving a shadow 'image of the signal modulating the beam which may be reproduced on a screen by transmitted light or reflected light as in Figs. 3 and 4 (not shown). The mean power of the beam and the temperatures of the oven and cooled surface may be regulated so that the speed of recondensation corresponds to the duration of an image, or, for obtaining persistent images, so that the time of recondensation is long. The temperature of the oven is about 100 to 200‹ C. and the persistance of the image may be <1>/5oth of a second to some seconds.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR962782D FR962782A (en) | 1942-12-15 | ||
| GB1189044A GB587125A (en) | 1944-06-22 | 1944-06-22 | Improvements in or relating to cathode ray tubes for use in television reception |
| US651401A US2479458A (en) | 1942-12-15 | 1946-03-01 | Image receiving cathodic tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1189044A GB587125A (en) | 1944-06-22 | 1944-06-22 | Improvements in or relating to cathode ray tubes for use in television reception |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB587125A true GB587125A (en) | 1947-04-15 |
Family
ID=9994529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1189044A Expired GB587125A (en) | 1942-12-15 | 1944-06-22 | Improvements in or relating to cathode ray tubes for use in television reception |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB587125A (en) |
-
1944
- 1944-06-22 GB GB1189044A patent/GB587125A/en not_active Expired
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