GB588119A - Improvements in and relating to electron microscopes - Google Patents
Improvements in and relating to electron microscopesInfo
- Publication number
- GB588119A GB588119A GB2366/45A GB236645A GB588119A GB 588119 A GB588119 A GB 588119A GB 2366/45 A GB2366/45 A GB 2366/45A GB 236645 A GB236645 A GB 236645A GB 588119 A GB588119 A GB 588119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- vibrated
- fluorescent
- rod
- electron microscopes
- 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
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/22—Optical or photographic arrangements associated with the tube
- H01J37/224—Luminescent screens or photographic plates for imaging ; Apparatus specially adapted therefor, e.g. cameras, TV-cameras, photographic equipment, exposure control; Optical subsystems specially adapted therefor, e.g. microscopes for observing image on luminescent screen
Abstract
588,119. Electron microscopes. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 30, 1945, No. 2366. Convention date, Feb. 1, 1944. [Class 39 (i)] The fluorescent screen of an electron microscope is vibrated ina direction transverse to the impinging electron beam, longitudinal movement of the screen being prevented by guide members 39, Fig. 2. The screen comprises a frame 30 of circular or rectangular shape supporting a transparent window 31 on which the fluorescent material is deposited, and is actuated by a rod 35 passing through a bellows 37. The external end of the rod 35 may be constituted by an armature, Fig. 1 (not shown), which is vibrated by means of a coil traversed by alternating current at a frequency of at least twenty cycles per second so as to eliminate " flicker." If the image is to be photographed, however, the screen may be vibrated manually at a lower frequency during the exposure. The screen may consist of a single layer of fluorescent particles.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US520610A US2408287A (en) | 1944-02-01 | 1944-02-01 | Electron microscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB588119A true GB588119A (en) | 1947-05-14 |
Family
ID=24073344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2366/45A Expired GB588119A (en) | 1944-02-01 | 1945-01-30 | Improvements in and relating to electron microscopes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2408287A (en) |
| BE (1) | BE480178A (en) |
| FR (1) | FR948342A (en) |
| GB (1) | GB588119A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2444700A (en) * | 1945-10-26 | 1948-07-06 | Rca Corp | Method of operating electron guns |
| DE1235455B (en) * | 1962-07-05 | 1967-03-02 | Philips Electronic Pharma | electron microscope |
| US3397336A (en) * | 1967-03-06 | 1968-08-13 | Raytheon Co | Target rotatable by tubular member of deformable, shape-retaining material |
-
0
- BE BE480178D patent/BE480178A/xx unknown
-
1944
- 1944-02-01 US US520610A patent/US2408287A/en not_active Expired - Lifetime
-
1945
- 1945-01-30 GB GB2366/45A patent/GB588119A/en not_active Expired
-
1947
- 1947-06-25 FR FR948342D patent/FR948342A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR948342A (en) | 1949-07-28 |
| BE480178A (en) | |
| US2408287A (en) | 1946-09-24 |
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