GB887517A - Improvements relating to electron microscopes - Google Patents

Improvements relating to electron microscopes

Info

Publication number
GB887517A
GB887517A GB37012/57A GB3701257A GB887517A GB 887517 A GB887517 A GB 887517A GB 37012/57 A GB37012/57 A GB 37012/57A GB 3701257 A GB3701257 A GB 3701257A GB 887517 A GB887517 A GB 887517A
Authority
GB
United Kingdom
Prior art keywords
layer
membrane
coated
film
gun
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
GB37012/57A
Inventor
Michael Edward Haine
Peter Alex Einstein
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 NL233650D priority Critical patent/NL233650A/xx
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB37012/57A priority patent/GB887517A/en
Priority to US776012A priority patent/US3051860A/en
Priority to DEM39739A priority patent/DE1200970B/en
Publication of GB887517A publication Critical patent/GB887517A/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
    • H01J37/22—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
    • 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
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/45—Charge-storage screens exhibiting internal electric effects caused by electromagnetic radiation, e.g. photoconductive screen, photodielectric screen, photovoltaic screen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S313/00—Electric lamp and discharge devices
    • Y10S313/07—Bombardment induced conductivity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Radiation (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Conversion Of X-Rays Into Visible Images (AREA)

Abstract

887,517. Electron microscopes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 25, 1958 [Nov. 27, 1957], No. 37012/57. Class 39(1) An intensifier plate comprises a thin, tightly stretched, electrically insulating plastic membrane 2 coated on one side with a film 1 of ' bombardment-induced-conductivity' material such as selenium. The film 1 is preferably, deposited on a metal layer 5 coated on the membrane 2; on the free face of the film 1 an anisotropically conducting layer 6 with high tranverse resistance is formed from gold smoke. The free face of the membrane is coated with a metal layer 4, on to which a high energy image beam is directed. The beam penetrates through the layers 4, 5 and membrane 2 into layer 1 thus increasing its conductivity. A low energy beam from electron gun 7 scans layer 6, and the layer 5 is held at the same potential as the gun to provide a datum to layer 1 at which the electron beam is repelled from the target. Between scans charge leaks away through the conductive parts of layer 1 and its replacement by the beam induces capacitatively a charge on layer 5; an amplified signal of which may be observed across load resistor 10 on cathode ray tube 16. Any charge collecting on layer 4 and membrane 2 is led away to earth. Electrostatic guard rings 13, 14 at +3 and +50 volts respectively may be provided to minimise the effects due to stray electrons. In a modification the plate 5 is kept at a high potential with respect to that of the gun cathode so that selenium layer will stabilise at the second secondary emission cross-over point. Specification 887,516 is referred to.
GB37012/57A 1957-11-27 1957-11-27 Improvements relating to electron microscopes Expired GB887517A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL233650D NL233650A (en) 1957-11-27
GB37012/57A GB887517A (en) 1957-11-27 1957-11-27 Improvements relating to electron microscopes
US776012A US3051860A (en) 1957-11-27 1958-11-24 Image scanner for electron microscopes
DEM39739A DE1200970B (en) 1957-11-27 1958-11-26 Electron image intensifier screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB37012/57A GB887517A (en) 1957-11-27 1957-11-27 Improvements relating to electron microscopes

Publications (1)

Publication Number Publication Date
GB887517A true GB887517A (en) 1962-01-17

Family

ID=10392996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37012/57A Expired GB887517A (en) 1957-11-27 1957-11-27 Improvements relating to electron microscopes

Country Status (4)

Country Link
US (1) US3051860A (en)
DE (1) DE1200970B (en)
GB (1) GB887517A (en)
NL (1) NL233650A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1327117A (en) * 1962-03-30 1963-05-17 Csf New field emission cold cathode triode
US3345514A (en) * 1963-10-19 1967-10-03 Hitachi Ltd Television camera combined with an electron microscope and having a plurality of cathodoconductive targets
US3370168A (en) * 1964-01-14 1968-02-20 Hitachi Ltd Anode aperture plate for a television camera tube in an electron microscope comprising a stainless steel foil
US3455683A (en) * 1964-08-05 1969-07-15 Bausch & Lomb Method of making reticle using a three-layer photoelectric element
US3360671A (en) * 1965-04-26 1967-12-26 Gen Electrodynamics Corp Vidicon with connected conductive coatings on both sides of faceplate
US3373353A (en) * 1965-09-30 1968-03-12 Navy Usa Electron beam scanning system for quality control of materials
FR1491300A (en) * 1966-05-05 1967-08-11 Thomson Houston Comp Francaise Improvements to secondary emission conduction targets and electron tubes incorporating them
FR1494817A (en) * 1966-06-24 1967-09-15 Thomson Houston Comp Francaise Improvements to targets with internal conduction by secondary emission and to electron tubes equipped with such targets
DE1564658B2 (en) * 1966-07-13 1971-04-29 Siemens AG, 1000 Berlin u 8000 München METHOD OF FOCUSING THE OBJECTIVE LENS OF A BODY OF CULAR BEAM MICROSCOPE, IN PARTICULAR AN ELECTRON MICROSCOPE
US3448377A (en) * 1967-10-12 1969-06-03 Atomic Energy Commission Method utilizing an electron beam for nondestructively measuring the dielectric properties of a sample
GB1286454A (en) * 1968-08-24 1972-08-23 Cambridge Scientific Instr Ltd Surface potential analysis by electron beams
DE3117893A1 (en) * 1981-05-06 1982-12-02 Siemens AG, 1000 Berlin und 8000 München Combined image intensifier/television camera tube
JPH0945271A (en) * 1995-08-03 1997-02-14 Hitachi Ltd Electron microscope equipped with image pick-up device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB677983A (en) * 1947-04-22 1952-08-27 Electrical & Musical Ind Ltd Improvements relating to cathode ray tube apparatus
US2544754A (en) * 1947-12-04 1951-03-13 Bell Telephone Labor Inc Electron camera tube
US2544755A (en) * 1948-01-29 1951-03-13 Bell Telephone Labor Inc Electron camera tube
GB665877A (en) * 1948-02-03 1952-01-30 Emi Ltd Improvements in or relating to circuit arrangements embodying cathode ray tubes
US2804561A (en) * 1948-03-09 1957-08-27 Sheldon Edward Emanuel X-ray camera
US2654853A (en) * 1949-02-28 1953-10-06 Rca Corp Photoelectric apparatus
US2878416A (en) * 1953-08-10 1959-03-17 Pye Ltd Television camera tubes

Also Published As

Publication number Publication date
US3051860A (en) 1962-08-28
NL233650A (en)
DE1200970C2 (en) 1966-04-28
DE1200970B (en) 1965-09-16

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