GB485264A - Improvements in electron-microscopy and apparatus therefor - Google Patents
Improvements in electron-microscopy and apparatus thereforInfo
- Publication number
- GB485264A GB485264A GB25732/37A GB2573237A GB485264A GB 485264 A GB485264 A GB 485264A GB 25732/37 A GB25732/37 A GB 25732/37A GB 2573237 A GB2573237 A GB 2573237A GB 485264 A GB485264 A GB 485264A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- electron
- tube
- cathode
- produced
- 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
- 238000001493 electron microscopy Methods 0.000 title abstract 2
- 238000010894 electron beam technology Methods 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
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
- H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
- H01J31/503—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output with an electromagnetic electron-optic system
-
- 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
- H01J31/49—Pick-up adapted for an input of electromagnetic radiation other than visible light and having an electric output, e.g. for an input of X-rays, for an input of infrared radiation
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
485,264. Electron-microscopy; cathoderay tubes. ZEISS IKON AKT.-GES. Sept. 22, 1937, No. 25732. Convention date, Oct. 2, 1936. [Classes 39 (i) and 40 (iii)] For microscopically examining objects by means of electron-discharge apparatus, an image of the object is produced on a photocathode by means of short-wave radiation, and this image is magnified electron-optically. With the apparatus shown in Fig. 1, the object 1 is illuminated with ultra-violet light from a mercury lamp 3, and an image is formed by an optical system 4 on a photo-cathode 5 on the inner side of a quartz window 6, at one end of an electron-discharge tube 11. Magnetic lenses 7, 8 cause the emitted electrons to produce a magnified image of the object on a fluorescent screen 9 on a transparent plate at the other end of the tube 11. A potential difference of about 50,000 volts exists between the cathode 5 and the anode 12 on the inside of the tube. In the arrangement shown in Fig. 2, the object 22 is illuminated with rays produced by an X-ray tube 20, and an image is projected by the X-rays on to a thin metal window 23 in a vacuum tube 25. The electrons liberated at the window are concentrated by magnetic lenses 27, 28 on to a cathode 29 comprising a mosaic plate in the form of a subdivided metal layer. The charge image produced at the cathode is scanned by an oscillating electron beam 30 which is utilized, as in known television apparatus, to control an electron beam in a cathode-ray receiver of the Braun tube type, and thereby to produce a magnified image of the object on the fluorescent screen or equivalent device in the Braun tube. Fig. 3 (not shown) illustrates diagrammatically the means for coupling the scanning-device shown in Fig. 2 to the cathoderay receiver.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE485264X | 1936-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB485264A true GB485264A (en) | 1938-05-17 |
Family
ID=6543260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25732/37A Expired GB485264A (en) | 1936-10-02 | 1937-09-22 | Improvements in electron-microscopy and apparatus therefor |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2219113A (en) |
| GB (1) | GB485264A (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899557A (en) * | 1959-08-11 | Apparatus for producing shadowgraphs | ||
| US2442287A (en) * | 1943-08-13 | 1948-05-25 | Pye Ltd | Means for reproducing X-ray images |
| US2696522A (en) * | 1944-01-22 | 1954-12-07 | Robert H Rines | Visual reproduction of distant objects |
| US2833854A (en) * | 1944-02-03 | 1958-05-06 | Rines Robert Harvey | Electric system |
| US2863941A (en) * | 1944-03-18 | 1958-12-09 | Rines Robert Harvey | Radio picture system and apparatus |
| US2443025A (en) * | 1945-07-30 | 1948-06-08 | Gen Electric | Cathode-ray apparatus |
| US2545524A (en) * | 1945-08-29 | 1951-03-20 | Rca Corp | Schmidt television projection system |
| US2525832A (en) * | 1946-02-20 | 1950-10-17 | Sheldon Edward Emanuel | Tube with composite photocathode for conversion and intensification of x-ray images |
| FR964594A (en) * | 1947-05-20 | 1950-08-18 | ||
| US2527913A (en) * | 1947-08-06 | 1950-10-31 | Radio Industrie Sa | Photoelectric device |
| US2555424A (en) * | 1948-03-09 | 1951-06-05 | Sheldon Edward Emanuel | Apparatus for fluoroscopy and radiography |
| US2804561A (en) * | 1948-03-09 | 1957-08-27 | Sheldon Edward Emanuel | X-ray camera |
| US2690516A (en) * | 1948-03-09 | 1954-09-28 | Shcldon Edward Emanuel | Method and device for producing neutron images |
| US2670401A (en) * | 1948-06-15 | 1954-02-23 | Weinberg Marvin | X-ray diagnostic apparatus |
| US2593925A (en) * | 1948-10-05 | 1952-04-22 | Sheldon Edward Emanuel | Device for color projection of invisible rays |
| US2692299A (en) * | 1948-12-11 | 1954-10-19 | Westinghouse Electric Corp | Image contrast intensifier |
| NL145709B (en) * | 1949-03-31 | Philips Nv | ELECTRICAL SWITCH ELEMENT. | |
| US2700116A (en) * | 1950-02-11 | 1955-01-18 | Edward E Sheldon | Device for intensification of X-ray images |
| US2739258A (en) * | 1950-05-19 | 1956-03-20 | Edward E Sheldon | System of intensification of x-ray images |
| US2803770A (en) * | 1950-09-18 | 1957-08-20 | Fernseh Gmbh | Electron discharge tube apparatus |
| US2724737A (en) * | 1951-01-29 | 1955-11-22 | Alsede W Hogan | Electric color image formation and control |
| US2973445A (en) * | 1951-03-09 | 1961-02-28 | Machlett Lab Inc | Device for detection, conversion, and amplification of x-ray images |
| US2894159A (en) * | 1951-06-01 | 1959-07-07 | Sheldon Edward Emanuel | Electronic system for x-ray images |
| US2826632A (en) * | 1951-06-05 | 1958-03-11 | Rca Corp | Television pickup tube system |
| US2817781A (en) * | 1954-05-27 | 1957-12-24 | Sheldon Edward Emanuel | Image storage device |
| US2906879A (en) * | 1956-07-25 | 1959-09-29 | Farrand Optical Co Inc | Imaging apparatus |
-
1937
- 1937-09-22 GB GB25732/37A patent/GB485264A/en not_active Expired
- 1937-10-02 US US167051A patent/US2219113A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2219113A (en) | 1940-10-22 |
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