GB419452A - Improvements in or relating to television - Google Patents
Improvements in or relating to televisionInfo
- Publication number
- GB419452A GB419452A GB13197/33A GB1319733A GB419452A GB 419452 A GB419452 A GB 419452A GB 13197/33 A GB13197/33 A GB 13197/33A GB 1319733 A GB1319733 A GB 1319733A GB 419452 A GB419452 A GB 419452A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mosaic
- photo
- ray
- electric
- collected
- 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
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
419,452. Television transmitters. ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex, and McGEE, J. D., 9, King's Avenue, Ealing, London. May 5, 1933, No. 13197. [Classes 39 (i) and 40 (iii).] The insulated elements of a mosaic screen 11 have on one side a coating of photo-electric material on which the picture is projected, and the opposite side is scanned by a cathode ray 21. The mosaic consists of short aluminium wires with a thin insulating coating of aluminium oxide covered by a conducting film of silver, Fig. 2 (not shown). The photo-electric emission from the screen is collected by an earthed grid 10. Each element of the mosaic thus receives a charge dependent on the strength of the incident light. When the cathode-ray is incident on an element, the latter reaches the negative potential at which its retarding effect on the ray so reduces its speed that the number of secondary electrons 22 equals the number of primary electrons, Fig. 3 (not shown). The number of secondary electrons emitted thus varies with the charge given photo-electrically to each element of the mosaic. The secondary emission is collected by a ring electrode 12, and the voltage across a resistance 18, connected between the electrode and earth, is applied to a valve 19.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB13197/33A GB419452A (en) | 1933-05-05 | 1933-05-05 | Improvements in or relating to television |
US723633A US2100259A (en) | 1933-05-05 | 1934-05-03 | Television |
FR772911D FR772911A (en) | 1933-05-05 | 1934-05-05 | Improvements to television devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB13197/33A GB419452A (en) | 1933-05-05 | 1933-05-05 | Improvements in or relating to television |
Publications (1)
Publication Number | Publication Date |
---|---|
GB419452A true GB419452A (en) | 1934-11-05 |
Family
ID=10018598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13197/33A Expired GB419452A (en) | 1933-05-05 | 1933-05-05 | Improvements in or relating to television |
Country Status (3)
Country | Link |
---|---|
US (1) | US2100259A (en) |
FR (1) | FR772911A (en) |
GB (1) | GB419452A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE739261C (en) * | 1937-05-15 | 1943-09-16 | Rca Corp | Operating method for a cathode ray transmitter tube with a mosaic screen and a fused-on secondary electron multiplier |
DE763126C (en) * | 1935-07-26 | 1952-05-23 | Rca Corp | Retaining image catcher with one-sided mosaic electrode |
DE889604C (en) * | 1936-12-12 | 1953-09-10 | Alfred Dr-Ing Bigalke | Image catcher tube with cathode ray scanning and built-in secondary electron multiplier |
DE753637C (en) * | 1938-03-29 | 1954-03-08 | Fernseh Gmbh | Method for operating image storage tubes, preferably with a storage electrode on one side |
DE918757C (en) * | 1937-06-26 | 1954-10-04 | Fernseh Gmbh | Saving image catcher tubes |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE754133C (en) * | 1935-08-14 | 1958-04-24 | Fernseh Gmbh | Mosaic electrode for storing image decomposition tubes |
GB469033A (en) * | 1936-01-16 | 1937-07-16 | Hans Gerhard Lubszynski | Improvements in and relating to television and like systems |
GB499828A (en) * | 1937-07-28 | 1939-01-30 | Baird Television Ltd | Improvements in or relating to electron discharge devices for use in television and like systems |
DE741899C (en) * | 1940-05-29 | 1943-11-18 | Fernseh Gmbh | Image transmitter tubes with a grid-shaped storage electrode acting as a control grid |
US2442287A (en) * | 1943-08-13 | 1948-05-25 | Pye Ltd | Means for reproducing X-ray images |
-
1933
- 1933-05-05 GB GB13197/33A patent/GB419452A/en not_active Expired
-
1934
- 1934-05-03 US US723633A patent/US2100259A/en not_active Expired - Lifetime
- 1934-05-05 FR FR772911D patent/FR772911A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE763126C (en) * | 1935-07-26 | 1952-05-23 | Rca Corp | Retaining image catcher with one-sided mosaic electrode |
DE889604C (en) * | 1936-12-12 | 1953-09-10 | Alfred Dr-Ing Bigalke | Image catcher tube with cathode ray scanning and built-in secondary electron multiplier |
DE739261C (en) * | 1937-05-15 | 1943-09-16 | Rca Corp | Operating method for a cathode ray transmitter tube with a mosaic screen and a fused-on secondary electron multiplier |
DE918757C (en) * | 1937-06-26 | 1954-10-04 | Fernseh Gmbh | Saving image catcher tubes |
DE753637C (en) * | 1938-03-29 | 1954-03-08 | Fernseh Gmbh | Method for operating image storage tubes, preferably with a storage electrode on one side |
Also Published As
Publication number | Publication date |
---|---|
US2100259A (en) | 1937-11-23 |
FR772911A (en) | 1934-11-08 |
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