GB460477A - Improvements in or relating to cathode ray tubes and means for operating the same - Google Patents
Improvements in or relating to cathode ray tubes and means for operating the sameInfo
- Publication number
- GB460477A GB460477A GB3775/36A GB377536A GB460477A GB 460477 A GB460477 A GB 460477A GB 3775/36 A GB3775/36 A GB 3775/36A GB 377536 A GB377536 A GB 377536A GB 460477 A GB460477 A GB 460477A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ray
- current
- feb
- magnitude
- relating
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
-
- 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
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
460,477. Cathode-ray tubes. ROCOAVSKI, W. and BECKER, F. A. Feb. 7, 1936, No. 3775. Convention date, Feb. 11, 1935. [Class 39 (i)] A means is provided for concentrating the ray in dependence up on the magnitude either of the ray cur rent or of a voltage derived from the ray or, in the case where a concentrating means independent of the magnitude of the ray current already exists of the voltage used for controlling the ray In one form, a con centrating lens system 3, 4, 6 independent of the ray current is provided, and an additional electrode 5 is biassed by a variable amount from the resistance 7 through which passes a current from the anode 2 proportional to the ray current. The arrangement is such that the concentration due to the electrode 5 increases with the ray current. The lenses be magnetic instead. In a tube having a constant concentration system the control voltage may be utilized directly or through an amplifier to provide additional concentration.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE460477X | 1935-02-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB460477A true GB460477A (en) | 1937-01-28 |
Family
ID=6539731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3775/36A Expired GB460477A (en) | 1935-02-11 | 1936-02-07 | Improvements in or relating to cathode ray tubes and means for operating the same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2161316A (en) |
| AT (1) | AT148930B (en) |
| FR (2) | FR460477A (en) |
| GB (1) | GB460477A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE898456C (en) * | 1937-12-18 | 1953-11-30 | Fernseh Gmbh | Arrangement for automatic image brightness control in circuits with cathode ray tubes for image reproduction, especially television transmission equipment |
| US2420514A (en) * | 1944-05-25 | 1947-05-13 | Gen Electric | Electron lens structure |
| FR937437A (en) * | 1946-12-24 | 1948-08-17 | Csf | Variable magnification electron microscope voltage divider |
| FR937296A (en) * | 1947-06-21 | 1948-08-12 | Csf | Improvements to focusing devices, for electron microscopes |
| US2658164A (en) * | 1950-11-03 | 1953-11-03 | Du Mont Allen B Lab Inc | Focus circuit for cathode-ray tubes |
| US2700743A (en) * | 1951-10-05 | 1955-01-25 | John H Park | Intensification of an electron beam from cold-cathode discharge |
| NL250365A (en) * | 1959-04-10 | |||
| US2983842A (en) * | 1959-06-23 | 1961-05-09 | Zenith Radio Corp | Electrode system |
| US3863091A (en) * | 1972-12-29 | 1975-01-28 | Hitachi Ltd | Electron gun assembly with improved unitary lens system |
-
1913
- 1913-07-17 FR FR460477A patent/FR460477A/en not_active Expired
-
1936
- 1936-01-30 AT AT148930D patent/AT148930B/en active
- 1936-02-07 GB GB3775/36A patent/GB460477A/en not_active Expired
- 1936-02-10 FR FR801794D patent/FR801794A/en not_active Expired
- 1936-02-12 US US63564A patent/US2161316A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR460477A (en) | 1913-12-03 |
| US2161316A (en) | 1939-06-06 |
| FR801794A (en) | 1936-08-17 |
| AT148930B (en) | 1937-03-10 |
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