GB691156A - Improvements in or relating to corpuscular ray apparatus - Google Patents

Improvements in or relating to corpuscular ray apparatus

Info

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
Application number
GB12509/51A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB691156A publication Critical patent/GB691156A/en
Expired legal-status Critical Current

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, 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.
GB12509/51A 1944-05-31 1951-05-28 Improvements in or relating to corpuscular ray apparatus Expired GB691156A (en)

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)

* Cited by examiner, † Cited by third party
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
NL92220C (en) * 1952-09-13
NL172506B (en) * 1952-09-16 Hollandse Plastic Ind CHEESE AGING ORGAN.
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CH279891A (en) 1951-12-31
NL89013C (en)
US2624022A (en) 1952-12-30
CH295522A (en) 1953-12-31

Similar Documents

Publication Publication Date Title
GB605341A (en) Electron focusing apparatus
GB691156A (en) Improvements in or relating to corpuscular ray apparatus
GB478410A (en) Improvements in or relating to cathode ray tubes
GB615553A (en) Improvements in or relating to devices for focusing an electron beam
GB564003A (en) Electron lens
GB516786A (en) Improvements in or relating to braun tubes
GB699830A (en) Improvements in magnetic electron lenses
GB735272A (en) Improvements in or relating to adjustable magnetic electron lenses
GB773240A (en) Improvements in or relating to arrangements for compensating for axial astigmatism in electron lenses
GB860557A (en) Improvements in or relating to electron beam discharge apparatus
GB766158A (en) A beam generating system for cathode-ray tubes employing an ion trap
GB592930A (en) Improvements in or relating to electronic discharge devices for producing ultra-highfrequency electrical oscillations
GB923649A (en) Klystron apparatus
GB855989A (en) Improvements relating to electron-optical devices
GB894569A (en) A device for compensating axial astigmatism of electron lenses
GB776515A (en) Improvements in or relating to ion trap arrangements
GB847266A (en) Improvements relating to electron lenses
GB745718A (en) Improvements in or relating to electromagnetic deflection systems for electron beams
GB657234A (en) Improvements in or relating to the focusing and positioning of the beam of a cathode-ray tube
GB893309A (en) Improvements in or relating to trochotron tubes
GB757755A (en) Improvements in magnetic focussing devices for cathode-ray tubes
GB868836A (en) Improvements in or relating to apparatus including a permanent magnet
GB834542A (en) Improvements in or relating to a cathode ray tube arrangement
GB731451A (en) Improvements in or relating to arrangements for use with cathode ray tubes
GB744127A (en) Improvements relating to circuit arrangements embodying cathode ray tubes