GB415143A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB415143A GB415143A GB560833A GB560833A GB415143A GB 415143 A GB415143 A GB 415143A GB 560833 A GB560833 A GB 560833A GB 560833 A GB560833 A GB 560833A GB 415143 A GB415143 A GB 415143A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- plates
- ray
- 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/74—Deflecting by electric fields only
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
415,143. Cathode ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex, and McGEE, J. D., 9, King's Avenue, Ealing, London. Feb. 23, 1933, No. 5608. [Class 39 (i).] In a cathode-ray tube with the screen 7 disposed at an acute angle to the mean direction 8 of the ray and with two sets 9, 11 of raydeflecting means at different distances from the screen, the set 11 nearer the screen 7 comprises a pair of plates so shaped and disposed that the ray is deflected to scan a keystoneshaped area in a plane normal to the axis 8, and so a rectangular area on the screen 7, when saw-tooth oscillations of constant amplitude and frequency are applied to the set 9 and similar oscillations to the set 11. The plates 11 may be rectangles on opposite sides of the axis 8 and in planes inclined to each other so as to intersect in a line 13 below and parallel to the axis 8. The set 9 comprises parallel rectangular plates. The screen 7 comprises a fluorescent layer on a glass plate for use in television receiver or a photoelectric mosaic for use in transmitters, the image being received or projected from the side of the screen facing the cathode ray. The anode 5, the focusing electrode 4 and the modulating electrode 3 around the cathode 2 are cylinders of equal diameter. In a modification, the plates 11 are trapeziums in parallel planes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB560833A GB415143A (en) | 1933-02-23 | 1933-02-23 | Improvements in or relating to cathode ray tubes |
| FR768962D FR768962A (en) | 1933-02-23 | 1934-02-22 | Improvements to cathode ray lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB560833A GB415143A (en) | 1933-02-23 | 1933-02-23 | Improvements in or relating to cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB415143A true GB415143A (en) | 1934-08-23 |
Family
ID=9799283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB560833A Expired GB415143A (en) | 1933-02-23 | 1933-02-23 | Improvements in or relating to cathode ray tubes |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR768962A (en) |
| GB (1) | GB415143A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB386699I5 (en) * | 1936-01-24 | |||
| DE909234C (en) * | 1936-12-16 | 1954-04-15 | Zeiss Ikon Ag | Arrangement to achieve a distortion-free deflection geometry with Braun tubes |
-
1933
- 1933-02-23 GB GB560833A patent/GB415143A/en not_active Expired
-
1934
- 1934-02-22 FR FR768962D patent/FR768962A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR768962A (en) | 1934-08-17 |
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