GB491448A - Improvements in or relating to electron discharge devices - Google Patents
Improvements in or relating to electron discharge devicesInfo
- Publication number
- GB491448A GB491448A GB6054/37A GB605437A GB491448A GB 491448 A GB491448 A GB 491448A GB 6054/37 A GB6054/37 A GB 6054/37A GB 605437 A GB605437 A GB 605437A GB 491448 A GB491448 A GB 491448A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mosaic
- focused
- photo
- class
- group
- 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
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000008054 signal transmission Effects 0.000 abstract 1
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
- H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
- H01J31/52—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output having grid-like image screen through which the electron ray or beam passes and by which the ray or beam is influenced before striking the luminescent output screen, i.e. having "triode action"
-
- 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
- H01J31/40—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having grid-like image screen through which the electron ray passes and by which the ray is influenced before striking the output electrode, i.e. having "triode action"
Landscapes
- Electron Sources, Ion Sources (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
491,448. Supply systems for vacuum and low-pressure discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 1, 1937, No. 6054. Convention date, Feb. 29, 1936. [Class 38 (iv)] [Also in Group XL] In television transmission a picture is focused on to a mosaic 33 of photo-electric elements insulated from each other and acting as a control grid for a cloud of electrons from a cathode source 2 of extended area ; the electron emission from the mosaic due to the picture varies the potential of the elements and thereby the number of electrons passing through the mosaic to form an electron image which is focused on to a fluorescent screen or on a double-sided mosaic 38 used in signal transmission. A suitably biassed grid 54 collects the secondaries emitted from the mosaic 38. An impulse generator 49 supplies the deflecting coils 47 and also the biassing current for the photo-electric mosaic 33. Specifications 315,362, [Class 40 (iii)], 472,859, and 472,861, [both in Group XL], are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66342A US2237896A (en) | 1936-02-29 | 1936-02-29 | Electronic device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB491448A true GB491448A (en) | 1938-09-01 |
Family
ID=22068874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6054/37A Expired GB491448A (en) | 1936-02-29 | 1937-03-01 | Improvements in or relating to electron discharge devices |
Country Status (3)
Country | Link |
---|---|
US (1) | US2237896A (en) |
FR (1) | FR816459A (en) |
GB (1) | GB491448A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2611820A (en) * | 1947-02-18 | 1952-09-23 | Rca Corp | Pickup tube beam-interrupting circuit |
US2817785A (en) * | 1950-03-03 | 1957-12-24 | Ben J Chromy | Vacuum tube and electric signalling apparatus |
US2786157A (en) * | 1951-05-09 | 1957-03-19 | Pye Ltd | Television pick-up tubes |
US2875360A (en) * | 1953-05-25 | 1959-02-24 | Westinghouse Electric Corp | Image intensifier |
-
1936
- 1936-02-29 US US66342A patent/US2237896A/en not_active Expired - Lifetime
-
1937
- 1937-01-19 FR FR816459D patent/FR816459A/en not_active Expired
- 1937-03-01 GB GB6054/37A patent/GB491448A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR816459A (en) | 1937-08-09 |
US2237896A (en) | 1941-04-08 |
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