GB634652A - Improvements in or relating to television and like pick-up tubes - Google Patents
Improvements in or relating to television and like pick-up tubesInfo
- Publication number
- GB634652A GB634652A GB30974/46A GB3097446A GB634652A GB 634652 A GB634652 A GB 634652A GB 30974/46 A GB30974/46 A GB 30974/46A GB 3097446 A GB3097446 A GB 3097446A GB 634652 A GB634652 A GB 634652A
- Authority
- GB
- United Kingdom
- Prior art keywords
- behind motion
- electrode
- corrected
- tubes
- behind
- 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B13/00—Diaphragms; Spacing elements
- C25B13/04—Diaphragms; Spacing elements characterised by the material
- C25B13/08—Diaphragms; Spacing elements characterised by the material based on organic materials
-
- 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
- H01J31/34—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 cathode potential, e.g. orthicon
- H01J31/36—Tubes with image amplification section, e.g. image-orthicon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
634,652. Electron image tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 17, 1946, No. 30974. Convention date, Nov. 28, 1945. [Class 39 (i)] In an orthicon tube, shading due to non- uniform landing of the beam on the target 3 is minimized by balancing the behind motion of the electron produced by the deflection coils 12 against the behind motion produced by the decelerating electrode 26. This is achieved in Fig. 4 by mounting the deflection coils on a rack 28 operated by a pinion 29 so that the position of the coils can be varied. In this way behind motion due to the non-homogensity of the deflecting field can be corrected ; behind motion due to misalignment of the electrode is corrected by the coil 14 as described in Specification 616,700. The decelerating electrode 26 may be in the form of a ring, as in Fig. 4, or in the form of a grid, Fig. 6 (not shown). Specification 634,639 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US634652XA | 1945-11-28 | 1945-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB634652A true GB634652A (en) | 1950-03-22 |
Family
ID=22049384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30974/46A Expired GB634652A (en) | 1945-11-28 | 1946-10-17 | Improvements in or relating to television and like pick-up tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB634652A (en) |
-
1946
- 1946-10-17 GB GB30974/46A patent/GB634652A/en not_active Expired
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