GB671902A - Improvements in or relating to television pick-up tubes - Google Patents
Improvements in or relating to television pick-up tubesInfo
- Publication number
- GB671902A GB671902A GB21628/50A GB2162850A GB671902A GB 671902 A GB671902 A GB 671902A GB 21628/50 A GB21628/50 A GB 21628/50A GB 2162850 A GB2162850 A GB 2162850A GB 671902 A GB671902 A GB 671902A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrons
- cathode
- flooding
- potential
- mosaic
- 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
- 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
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
- H01J31/30—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at anode potential, e.g. iconoscope
- H01J31/32—Tubes with image amplification section, e.g. image-iconoscope, supericonoscope
-
- 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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/021—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof arrangements for eliminating interferences in the tube
Abstract
671,902. Cathode-ray tubes. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Sept. 1, 1950 [Sept. 2, 1949], No. 21628/50. Class 39 (i). A television pick-up tube of the kind in which an electron image of the picture to be transmitted is projected on a storage target has the target flooded with slow electrons, the intensity and velocity of the flooding electrons being such that the mean potential and the peak potential of the target are sufficiently low to allow the derivation of a high video signal current. Preferably the flooding beam is as homogeneous as possible and has a velocity corresponding to a potential of 3 to 10 volts. In Fig. 2 electrons from the photo-cathode 1 charge the mosaic 2 which is scanned by a high velocity beam 3 and flooded by a conical beam of slow electrons from the gun 4. To overcome distortion caused by the edges of the mosaic being charged by the flooding beam auxiliary linear electrodes 12, 13 may be provided near the edges of the mosaic; electrode 13 is preferably at the potential of the cathode of the gun 4 and electrode 12 positive to it. An illuminated photo-cathode may be used instead of the gun 4 as a source of flooding electrons.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR996931T | 1949-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB671902A true GB671902A (en) | 1952-05-14 |
Family
ID=9558276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21628/50A Expired GB671902A (en) | 1949-09-02 | 1950-09-01 | Improvements in or relating to television pick-up tubes |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR996931A (en) |
| GB (1) | GB671902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1127394B (en) * | 1952-07-05 | 1962-04-12 | Fernseh Gmbh | Image storage tubes for fast scanning electrons, the storage electrode of which is sprinkled with a stream of slow photoelectrons |
-
1949
- 1949-09-02 FR FR996931D patent/FR996931A/en not_active Expired
-
1950
- 1950-09-01 GB GB21628/50A patent/GB671902A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1127394B (en) * | 1952-07-05 | 1962-04-12 | Fernseh Gmbh | Image storage tubes for fast scanning electrons, the storage electrode of which is sprinkled with a stream of slow photoelectrons |
Also Published As
| Publication number | Publication date |
|---|---|
| FR996931A (en) | 1951-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB795627A (en) | Improvements in or relating to storage tubes | |
| GB743431A (en) | Improvements in or relating to picture and/or picture signal producing electron discharge tubes | |
| GB671902A (en) | Improvements in or relating to television pick-up tubes | |
| GB770459A (en) | X-ray image intensifier system | |
| GB562149A (en) | Improvements in television pick-up tubes | |
| GB464919A (en) | Improvements in or relating to television transmitting and the like systems | |
| GB450973A (en) | Improvements in or relating to cathode-ray tubes | |
| GB475047A (en) | Improvements in or relating to electron discharge devices | |
| GB495707A (en) | Improvements in or relating to focussing systems for use in electric discharge tubes | |
| GB610288A (en) | Television scanning systems | |
| GB420667A (en) | Improvements in and relating to cathode ray tubes for television purposes | |
| GB463896A (en) | Improvements in or relating to oscillights or cathode ray tubes | |
| GB490391A (en) | Improvements in or relating to television and like systems | |
| GB452125A (en) | Improvements in and relating to cathode ray tubes | |
| GB683603A (en) | Improvements in or relating to electron discharge pick-up tubes suitable for use in television | |
| GB677983A (en) | Improvements relating to cathode ray tube apparatus | |
| GB451959A (en) | A system, or method, of scanning an image: for use in conjunction with any moving spot scanning device, for television or the like | |
| SU132726A1 (en) | Kinescope | |
| GB480691A (en) | Improvements in or relating to electron discharge devices | |
| GB656069A (en) | Improvements in or relating to television transmitting apparatus | |
| GB736280A (en) | Improvements in or relating to television camera tubes | |
| GB686448A (en) | Improvements in or relating to electron discharge tubes used in television | |
| GB736987A (en) | Improvements to or relating to cathode ray pick-up tubes or the like | |
| GB455084A (en) | Improvements in or relating to cathode ray tubes and circuits therefor | |
| GB708434A (en) | Improvements in or relating to electron microscopes |