GB794603A - Improvements in or relating to electron precision oscillographs - Google Patents
Improvements in or relating to electron precision oscillographsInfo
- Publication number
- GB794603A GB794603A GB29149/55A GB2914955A GB794603A GB 794603 A GB794603 A GB 794603A GB 29149/55 A GB29149/55 A GB 29149/55A GB 2914955 A GB2914955 A GB 2914955A GB 794603 A GB794603 A GB 794603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deflection
- electron
- spot
- recording
- lenses
- 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
- 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
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/121—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen tubes for oscillography
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Electron Beam Exposure (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
794,603. Cathode-ray tubes. ARDENNE M. VON. Oct. 13, 1955 [May 20, 1955], No. 29149/55. Class 39(1). An electron precision, micro-or high-speedoscillograph for internal photography includes electron optical means for reducing the initial cross-section of the electron beam to provide a recording spot of 1 to 10 Á with a scanned area of more than 5À10<SP>6</SP> times that of the recording spot, in order to keep the errors of deflection for large angles within the order of magnitude of a few microns. The beam aperture αL at the spot may be about 5À10<SP>-5</SP> to 2À10<SP>-4</SP> radian for a recording surface of about 10 x 10 cm.<SP>2</SP>. A diaphragm with an aperture smaller than 5À10<SP>-4</SP> radians on the recording spot side is preferably disposed at, or adjacent to, the focus of the final lens. The diaphragm is preferably rendered free of electrostatic charges. It may be e.g. made of platinum, and adapted to be heated to a high temperature e.g. over 500C. There may be one or more electron lenses of short focal length for reducing the cross-over of the beam to a diameter of 1 to 10Á and an associated main lens for projecting the image on to the recording surface. The main lens is strongly screened. Electrostatic or magnetic lenses may be used. The dimensions and optical distances of suitable lenses are given. The length of the deflection field may be more than 15 per cent of the distance of the deflection system from the screen. High speed oscillograms are recorded on fine-grained photographic material for subsequent evaluation by means of a measuring microscope. A non-granular fluorescent screen may be provided for centering and focussing the instrument. Tables are given showing deflection sensitivities and deflection errors in practical cases.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA22708A DE1018145B (en) | 1955-05-20 | 1955-05-20 | Precision electron beam oscillograph |
Publications (1)
Publication Number | Publication Date |
---|---|
GB794603A true GB794603A (en) | 1958-05-07 |
Family
ID=6925252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29149/55A Expired GB794603A (en) | 1955-05-20 | 1955-10-13 | Improvements in or relating to electron precision oscillographs |
Country Status (5)
Country | Link |
---|---|
US (1) | US2898467A (en) |
CH (1) | CH335756A (en) |
DE (1) | DE1018145B (en) |
GB (1) | GB794603A (en) |
NL (1) | NL197896A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR84703E (en) * | 1958-08-25 | 1965-07-12 | ||
US3187093A (en) * | 1960-09-24 | 1965-06-01 | Optische Ind De Oude Delft Nv | Electronic and photographic image intensification |
GB1246740A (en) * | 1968-12-27 | 1971-09-15 | Sony Corp | Color picture tube |
GB201913978D0 (en) * | 2019-09-27 | 2019-11-13 | Ocado Innovation Ltd | A cogwheel |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1932084A (en) * | 1929-08-14 | 1933-10-24 | Westinghouse Electric & Mfg Co | Cathode ray oscillograph |
DE751509C (en) * | 1938-06-03 | 1954-01-25 | Manfred Von Ardenne | Electron beam oscilloscope |
DE895811C (en) * | 1938-09-20 | 1953-11-05 | Telefunken Gmbh | Cathode ray tube |
US2352043A (en) * | 1940-01-15 | 1944-06-20 | Ardenne Manfred Von | Diaphragm for electron optical apparatus |
US2330930A (en) * | 1941-04-30 | 1943-10-05 | Rca Corp | Scanning type of electron microscope |
BE475636A (en) * | 1941-09-19 | |||
US2418432A (en) * | 1944-05-01 | 1947-04-01 | Rca Corp | Magnetic electron lens system |
US2464396A (en) * | 1948-01-30 | 1949-03-15 | Rca Corp | Art of focusing electron microscopes, etc. |
-
0
- NL NL197896D patent/NL197896A/xx unknown
-
1955
- 1955-05-20 DE DEA22708A patent/DE1018145B/en active Pending
- 1955-06-02 CH CH335756D patent/CH335756A/en unknown
- 1955-10-13 GB GB29149/55A patent/GB794603A/en not_active Expired
-
1956
- 1956-03-28 US US574524A patent/US2898467A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE1018145B (en) | 1957-10-24 |
US2898467A (en) | 1959-08-04 |
NL197896A (en) | |
CH335756A (en) | 1959-01-31 |
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