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GB847266A - Improvements relating to electron lenses - Google Patents

Improvements relating to electron lenses

Info

Publication number
GB847266A
GB847266A GB28674/57A GB2867457A GB847266A GB 847266 A GB847266 A GB 847266A GB 28674/57 A GB28674/57 A GB 28674/57A GB 2867457 A GB2867457 A GB 2867457A GB 847266 A GB847266 A GB 847266A
Authority
GB
United Kingdom
Prior art keywords
specimen
lens
aperture
pole
plate
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
GB28674/57A
Inventor
Michael Edward Haine
Thomas Mulvey
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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
Priority to DENDAT1251828D priority Critical patent/DE1251828B/de
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to DEM38843A priority patent/DE1096061B/en
Priority to FR1203259D priority patent/FR1203259A/en
Priority to CH6380758A priority patent/CH364373A/en
Priority to US760397A priority patent/US2950390A/en
Publication of GB847266A publication Critical patent/GB847266A/en
Priority to GB44299/61A priority patent/GB1004873A/en
Priority to US159374A priority patent/US3140488A/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 or ion-optical arrangement
    • H01J37/10—Lenses
    • H01J37/14—Lenses magnetic
    • H01J37/141—Electromagnetic lenses
    • 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
    • H01J37/20—Means for supporting or positioning the object or the material; Means for adjusting diaphragms or lenses associated with the support
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C13/00—Proximity fuzes; Fuzes for remote detonation
    • F42C13/04—Proximity fuzes; Fuzes for remote detonation operated by radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/505—Systems of measurement based on relative movement of target using Doppler effect for determining closest range to a target or corresponding time, e.g. miss-distance indicator

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

847,266. X-ray tubes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 22, 1958 [Sept. 11, 1957], No. 28674/57. Class 39(1). An electron lens for an X-ray type analyser comprises an annular magnet assembly in which one pole is formed by the edge of a small aperture 8 in a transverse plate 4<SP>1</SP>, and the other pole is formed by a cylinder whose internal diameter D is large compared to the working distance of the specimen 7<SP>1</SP>; the latter is supported beyond the apertured plate 4<SP>1</SP> and outside the magnetic structure. The working distance is the distance between the focal point where the specimen is located, and the last working surface of the lens. In the form shown, the plate 4<SP>1</SP> has a part of reduced thickness 3 round the aperture 8. The specimen is mounted on a rotatable carrier 9 fixed to a spindle 10, and the X-rays are projected through an aperture 12. The lens is used in the apparatus described in Specification 847,264.
GB28674/57A 1957-09-11 1957-09-11 Improvements relating to electron lenses Expired GB847266A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DENDAT1251828D DE1251828B (en) 1957-09-11
DEM38843A DE1096061B (en) 1957-09-11 1958-09-05 Electron lens
FR1203259D FR1203259A (en) 1957-09-11 1958-09-10 Electronic lens enhancements
CH6380758A CH364373A (en) 1957-09-11 1958-09-10 X-ray spectral analysis device
US760397A US2950390A (en) 1957-09-11 1958-09-11 Electron lenses
GB44299/61A GB1004873A (en) 1957-09-11 1961-12-11 A system responsive to the distance between two objects in relative motion
US159374A US3140488A (en) 1957-09-11 1961-12-14 Miss distance indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR846971A FR1283259A (en) 1960-12-15 1960-12-15 Device for measuring the distance of two objects of which at least one is mobile

Publications (1)

Publication Number Publication Date
GB847266A true GB847266A (en) 1960-09-07

Family

ID=8744787

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28674/57A Expired GB847266A (en) 1957-09-11 1957-09-11 Improvements relating to electron lenses

Country Status (2)

Country Link
FR (1) FR1283259A (en)
GB (1) GB847266A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1232567A (en) * 1969-02-21 1971-05-19

Also Published As

Publication number Publication date
FR1283259A (en) 1962-02-02

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