GB491758A - Improvements in or relating to electron image dissecting apparatus - Google Patents
Improvements in or relating to electron image dissecting apparatusInfo
- Publication number
- GB491758A GB491758A GB27279/37A GB2727937A GB491758A GB 491758 A GB491758 A GB 491758A GB 27279/37 A GB27279/37 A GB 27279/37A GB 2727937 A GB2727937 A GB 2727937A GB 491758 A GB491758 A GB 491758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- stop
- relating
- respect
- electron image
- 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
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/42—Image pick-up tubes having an input of visible light and electric output with image screen generating a composite electron beam which is deflected as a whole past a stationary probe to simulate a scanning effect, e.g. Farnsworth pick-up tube
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
491,758. Image dissectors. ZEISS IKON AKT.-GES. Oct. 7, 1937, No. 27279. Convention date, Nov. 13, 1936. Drawings to Specification. [Class 39 (i)] The stop-like anode of an image dissector is made like an electron lens comprising two or more apertured electrodes and means are provided for varying the potential of one or more electrodes for controlling the effective aperture of the stop. Preferably three electrodes are provided, the inner one being at a variable negative potential with respect to the photoelectric cathode. In another form four electrodes are formed into closely spaced pairs ; preferably the inner adjacent electrodes of the two pairs are conductively connected to enable them to be maintained at the same negative potential with respect to the cathode. The electrodes may be apertured discs mounted together in an insulating ring which rests on the envelope.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE491758X | 1936-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB491758A true GB491758A (en) | 1938-09-08 |
Family
ID=6544310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27279/37A Expired GB491758A (en) | 1936-11-13 | 1937-10-07 | Improvements in or relating to electron image dissecting apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2160672A (en) |
| FR (1) | FR827114A (en) |
| GB (1) | GB491758A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2817785A (en) * | 1950-03-03 | 1957-12-24 | Ben J Chromy | Vacuum tube and electric signalling apparatus |
| US3688026A (en) * | 1970-10-29 | 1972-08-29 | Le Elektrotekhnichesky I Svyaz | Method and system for the dot-pattern recording of half-tone images |
| US4827125A (en) * | 1987-04-29 | 1989-05-02 | The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services | Confocal scanning laser microscope having no moving parts |
-
1937
- 1937-09-24 FR FR827114D patent/FR827114A/en not_active Expired
- 1937-10-07 GB GB27279/37A patent/GB491758A/en not_active Expired
- 1937-11-10 US US173895A patent/US2160672A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2160672A (en) | 1939-05-30 |
| FR827114A (en) | 1938-04-20 |
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