GB691156A - Improvements in or relating to corpuscular ray apparatus - Google Patents
Improvements in or relating to corpuscular ray apparatusInfo
- Publication number
- GB691156A GB691156A GB12509/51A GB1250951A GB691156A GB 691156 A GB691156 A GB 691156A GB 12509/51 A GB12509/51 A GB 12509/51A GB 1250951 A GB1250951 A GB 1250951A GB 691156 A GB691156 A GB 691156A
- Authority
- GB
- United Kingdom
- Prior art keywords
- secured
- pole piece
- slots
- cover
- magnetic
- 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
- H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
- H01J37/10—Lenses
- H01J37/14—Lenses magnetic
- H01J37/143—Permanent magnetic lenses
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
- D05B57/10—Shuttles
- D05B57/14—Shuttles with rotary hooks
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Electron Sources, Ion Sources (AREA)
- Lens Barrels (AREA)
Abstract
691,156. Cathode-ray tubes. SIEMENS & HALSKE AKT.-GES. May 28,1951 [Oct. 1, 1948], No. 12509/51. Class 39(i). In a magnetic lens, an axially adjustable magnetic element is concentrically arranged between the inner pole piece and a surrounding cylindrical permanent magnet. A lower pole piece 6, together with the magnetic member 17 with which it may be integral, is secured to the base plate 7 of a cylindrical magnet and the pole piece 5 is secured through stirrups to the cover 2. The member 8 is axially adjustable against springs 14, 15 by the rod 16 and has guiding projections 9, 10 sliding in slots in a collar on the cover 2. The lens is short-circuited when the faces 18, 19 are in contact. In another form, the elements 22, 24, Fig. 2b, are screwed on to the pole pieces 21, 23, and they are rotated to adjust the gap therebetween by pins 28 which engage in slots therein and are secured to a frame 29 adjustable against springs by a rod extending through the tube wall. The arrangement may be applied to electron microscopes.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE295522X | 1944-05-31 | ||
| DE279891X | 1944-06-15 | ||
| DE11048X | 1948-10-01 | ||
| DE61248X | 1948-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB691156A true GB691156A (en) | 1953-05-06 |
Family
ID=27430271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12509/51A Expired GB691156A (en) | 1944-05-31 | 1951-05-28 | Improvements in or relating to corpuscular ray apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2624022A (en) |
| CH (2) | CH279891A (en) |
| GB (1) | GB691156A (en) |
| NL (1) | NL89013C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL92251C (en) * | 1948-10-01 | |||
| US2717080A (en) * | 1951-11-26 | 1955-09-06 | Sundstrand Magnetic Products C | Magnetic separator |
| NL91356C (en) * | 1952-09-13 | |||
| NL85499C (en) * | 1952-09-16 | |||
| US3818394A (en) * | 1966-06-10 | 1974-06-18 | Hitachi Ltd | Electron lens for electron microscope and the like |
| US3509503A (en) * | 1967-02-27 | 1970-04-28 | Nippon Electron Optics Lab | Objective lens pole pieces |
| US5382936A (en) * | 1992-06-02 | 1995-01-17 | The United States Of America As Represented By The Secretary Of The Army | Field augmented permanent magnet structures |
| JP2880647B2 (en) * | 1994-06-29 | 1999-04-12 | ジューキ株式会社 | Bobbin case |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2163157A (en) * | 1937-07-22 | 1939-06-20 | Bell Telephone Labor Inc | Electron discharge apparatus |
| DE973258C (en) * | 1938-03-08 | 1959-12-31 | Siemens Ag | Magnetic pole shoe lens with a small focal length for electron-optical enlargements in electron microscopes |
-
0
- NL NL89013D patent/NL89013C/xx active
-
1949
- 1949-04-20 CH CH279891D patent/CH279891A/en unknown
-
1951
- 1951-05-28 GB GB12509/51A patent/GB691156A/en not_active Expired
- 1951-07-30 CH CH295522D patent/CH295522A/en unknown
- 1951-11-30 US US259071A patent/US2624022A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH279891A (en) | 1951-12-31 |
| CH295522A (en) | 1953-12-31 |
| NL89013C (en) | |
| US2624022A (en) | 1952-12-30 |
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