GB445464A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB445464A GB445464A GB2566434A GB2566434A GB445464A GB 445464 A GB445464 A GB 445464A GB 2566434 A GB2566434 A GB 2566434A GB 2566434 A GB2566434 A GB 2566434A GB 445464 A GB445464 A GB 445464A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- tube
- rays
- cathode
- axis
- 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
- 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
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/24—Supports for luminescent material
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
445,464. Cathode-ray tubes. FERRANTI, Ltd., and TAYLOR, M. K., Hollinwood, Lancashire. Sept. 6, 1934, No. 25664. [Classes 39 (i) and 40 (iii)] A double-ended , tube for television has a single screen c intercepting cathode rays which are emitted from two sources a at opposite ends of the tube and which are controlled by devices b. The screen c may be inclined to the axis of the tube as shown for viewing normally, or may be normal to the axis and viewed obliquely. In the dual scanning of the screen by the two rays, the spots may coincide to brighten the image or may be out of phase to produce interlaced lines and so reduce flicker, and one ray may be displaced relatively to the other by a magnetic bias. An elastic screen such as a mica sheet may be rolled up and inserted through either end of the tube : the screen is of diameter corresponding to the enlarged central part of the tube and springs into plane form inside the tube. The screen is coated on both sides with fluorescent material before or after insertion into the tube or is of bi-refringent material such as mica stressed by electrostatic charges set up by the rays and modulating polarized light passed through the screen. Distortion due to departure of the screen from planar form may be corrected by the viewing lens. Specification 423,696 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2566434A GB445464A (en) | 1934-09-06 | 1934-09-06 | Improvements in or relating to cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2566434A GB445464A (en) | 1934-09-06 | 1934-09-06 | Improvements in or relating to cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB445464A true GB445464A (en) | 1936-04-06 |
Family
ID=10231306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2566434A Expired GB445464A (en) | 1934-09-06 | 1934-09-06 | Improvements in or relating to cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB445464A (en) |
-
1934
- 1934-09-06 GB GB2566434A patent/GB445464A/en not_active Expired
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