GB588120A - Improvements in and relating to electron microscopes - Google Patents
Improvements in and relating to electron microscopesInfo
- Publication number
- GB588120A GB588120A GB2367/45A GB236745A GB588120A GB 588120 A GB588120 A GB 588120A GB 2367/45 A GB2367/45 A GB 2367/45A GB 236745 A GB236745 A GB 236745A GB 588120 A GB588120 A GB 588120A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- erased
- screen
- electron
- viewing
- 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
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 230000000295 complement effect Effects 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 150000004820 halides Chemical class 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
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, image processing 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 or exposure control; Optical subsystems specially adapted therefor, e. g. microscopes for observing image on luminescent screen
-
- 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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/14—Screens on or from which an image or pattern is formed, picked up, converted or stored acting by discoloration, e.g. halide screen
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Electron Sources, Ion Sources (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
588,120. Electron microscopes. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 30, 1945, No. 2367. Convention date, Feb. 1, 1944. [Class 39 (i)] An electron microscope has a viewing screen 13, Fig. 1, comprising a thin layer of alkali halide, e.g. potassium chloride, crystals. For viewing purposes a beam of light 30, preferably monochromatic and of the same colour as the image, is projected on to the window 12, the reflected beam being magnified by a suitable lens system 31. The image is.erased by means of an auxiliary electron beam disposed in a side arm 11, In a modification, Fig. 2 (not shown), the image is viewed by transmitted light of a complementary colour. In this instance, the image may be erased by 'applying a potential difference between two thin semitransparent films of aluminium deposited on each side of the screen. The erasure may be accelerated by means of a heating coil disposed in a glass wall portion of the tube adjacent the screen. Alternatively, the image may be erased by infra-red rays.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US520609A US2422943A (en) | 1944-02-01 | 1944-02-01 | Electron microscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB588120A true GB588120A (en) | 1947-05-14 |
Family
ID=24073340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2367/45A Expired GB588120A (en) | 1944-02-01 | 1945-01-30 | Improvements in and relating to electron microscopes |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2422943A (en) |
| GB (1) | GB588120A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2562396A (en) * | 1947-03-15 | 1951-07-31 | Walt Inc De | Safety device for saws |
| US2890342A (en) * | 1954-09-29 | 1959-06-09 | Gen Electric | System for charge neutralization |
| US3170116A (en) * | 1960-06-20 | 1965-02-16 | Farrington Engineering Corp | Apparatus for measuring the intensity and particle velocity of a beam of electrically charged particles |
| US3461332A (en) * | 1965-11-26 | 1969-08-12 | Edward E Sheldon | Vacuum tubes with a curved electron image intensifying device |
| US9859097B2 (en) * | 2015-09-01 | 2018-01-02 | The Board Of Trustees Of The Leland Stanford Junior University | Vacuum tube electron microscope |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB445978A (en) * | 1935-03-26 | 1936-04-22 | Gen Electric Co Ltd | Improvements in or relating to cathode ray tubes for television and like purposes |
| US2163918A (en) * | 1935-06-14 | 1939-06-27 | Firm Of Fernseh Ag | Image screen for braun tubes |
| US2171970A (en) * | 1936-01-24 | 1939-09-05 | Rca Corp | Cathode ray tube |
| US2156813A (en) * | 1936-08-26 | 1939-05-02 | Robert J Kautz | Electronic camera |
| USRE22734E (en) * | 1938-02-03 | 1946-03-19 | Television receiving system | |
| BE432965A (en) * | 1938-02-25 | |||
| BE433790A (en) * | 1938-04-12 | |||
| BE441080A (en) * | 1939-10-07 | |||
| US2356633A (en) * | 1939-10-19 | 1944-08-22 | Ardenne Manfred Von | Electronic microscope |
-
1944
- 1944-02-01 US US520609A patent/US2422943A/en not_active Expired - Lifetime
-
1945
- 1945-01-30 GB GB2367/45A patent/GB588120A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2422943A (en) | 1947-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB662569A (en) | Improvements in or relating to electron optical systems | |
| GB1081034A (en) | Viewing system | |
| GB1031327A (en) | Cathode-ray tube optical information display device | |
| GB588120A (en) | Improvements in and relating to electron microscopes | |
| GB1334254A (en) | Optical display systems | |
| GB500119A (en) | Improvements in or relating to optical image producing arrangements | |
| GB547075A (en) | Television projection system | |
| GB1433333A (en) | Optical viewing devices | |
| FR2280094A1 (en) | Wide angle collimator for superimposition of display - has display screen and facing optical system on either side of semi-reflector | |
| GB1067149A (en) | Improvements relating to display screens | |
| GB657047A (en) | Improvements in or relating to cathode-ray tube display systems | |
| GB538622A (en) | Improvements in or relating to optical projection systems | |
| GB1043310A (en) | Optical system | |
| GB1219210A (en) | Improvements in or relating to the display of electrical intelligence | |
| GB835153A (en) | Improvements in and relating to optical systems for use in television, radar and thelike | |
| US2570219A (en) | Interferometer device having a permanently positioned interference pattern viewing screen | |
| GB1307883A (en) | Microscopes | |
| GB1450589A (en) | Correcting lens | |
| GB575060A (en) | Improvements in or relating to picture reproduction tubes especially for television | |
| GB644047A (en) | Improvements in or relating to systems for reproducing television images | |
| GB594883A (en) | Improvements in or relating to cathode ray tubes | |
| GB1496629A (en) | Image intensifier tube of the proximity focus type | |
| GB720532A (en) | Improvements in or relating to light modulating screens | |
| GB541155A (en) | Improvements relating to the optical projection of images | |
| GB521491A (en) | Improvements in or relating to view finders for photographic or cinematograph cameras |