GB747756A - Improvements in electrostatic lenses and electron guns therewith - Google Patents

Improvements in electrostatic lenses and electron guns therewith

Info

Publication number
GB747756A
GB747756A GB9946/54A GB994654A GB747756A GB 747756 A GB747756 A GB 747756A GB 9946/54 A GB9946/54 A GB 9946/54A GB 994654 A GB994654 A GB 994654A GB 747756 A GB747756 A GB 747756A
Authority
GB
United Kingdom
Prior art keywords
electrode
electrodes
april
aperture
therewith
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
GB9946/54A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB747756A publication Critical patent/GB747756A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Particle Accelerators (AREA)

Abstract

747,756. Electron lenses. GENERAL ELECTRIC CO. April 5, 1954 [April 3, 1953], No. 9946/54. Class 39 (1). The outer electrodes 1, 2 of a unipotential lens project into the middle member 3, preferably with reduced diameter, and are provided with re-entrant parts 29, preferably with a curve concave to the interior of the lens, terminating in apertures 28 defining the passage for the beam. Preferably the distance of projection y is greater than the difference in radii x. A beam limiting aperture 33 is provided in a fieldfree region within electrode 2, and an exit aperture is provided at 34. Electrode 2 is supported by flanges 2a, 6a on anode 6 which, together with accelerating electrode 7, control electrode 9 and cathode 21, is set at an angle for iontrapping. Electrode 9 has a thinned-out central aperture 20 and a reinforcing rib 23 as described in Specification 747,755. The electrodes are spaced by stubs fused into glass rods, and disc 19 carries spring supports engaging the envelope wall and connecting the electrodes 1, 2 and 6 to the wall coating.
GB9946/54A 1953-04-03 1954-04-05 Improvements in electrostatic lenses and electron guns therewith Expired GB747756A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US346674A US2888588A (en) 1953-04-03 1953-04-03 Electron gun structure

Publications (1)

Publication Number Publication Date
GB747756A true GB747756A (en) 1956-04-11

Family

ID=23360523

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9945/54A Expired GB747755A (en) 1953-04-03 1954-04-05 Improvements in electrode structures for beam discharge devices
GB9946/54A Expired GB747756A (en) 1953-04-03 1954-04-05 Improvements in electrostatic lenses and electron guns therewith

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9945/54A Expired GB747755A (en) 1953-04-03 1954-04-05 Improvements in electrode structures for beam discharge devices

Country Status (4)

Country Link
US (2) US2888588A (en)
BE (1) BE527842A (en)
FR (1) FR1098838A (en)
GB (2) GB747755A (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903612A (en) * 1954-09-16 1959-09-08 Rca Corp Positive ion trap gun
US2982878A (en) * 1954-11-23 1961-05-02 Rca Corp Electrode support
US2810851A (en) * 1955-07-01 1957-10-22 Johnson And Hoffman Mfg Corp Electrodes for electron gun units
US2939980A (en) * 1956-01-30 1960-06-07 Sylvania Electric Prod Image reproduction device structure
US2853639A (en) * 1956-02-27 1958-09-23 Westinghouse Electric Corp Cathode ray tube
US2840739A (en) * 1956-10-12 1958-06-24 Thomas Electronics Inc Cathode ray tube gun assembly
US2913612A (en) * 1956-10-29 1959-11-17 Gen Electric Cathode ray tube
US3008064A (en) * 1957-10-28 1961-11-07 Rauland Corp Cathode-ray tube
US2935635A (en) * 1957-11-18 1960-05-03 Philco Corp Cathode ray tube display system
US3205391A (en) * 1957-11-18 1965-09-07 Multi Tron Lab Inc Negative-lens type deflection magnifying means for electron beam in cathode ray tubes
US2922072A (en) * 1957-12-05 1960-01-19 Sylvania Electric Prod Image reproduction device
US2942128A (en) * 1958-05-28 1960-06-21 Johnson And Hoffman Mfg Corp Electrodes for electron gun unit
US3027479A (en) * 1958-06-27 1962-03-27 Rca Corp Electron guns
US2971108A (en) * 1958-09-26 1961-02-07 Sylvania Electric Prod Electron discharge device
US3020434A (en) * 1958-12-08 1962-02-06 Philco Corp Self shielding electron gun and cathode ray tube system including same
US3080500A (en) * 1959-06-22 1963-03-05 Philco Corp Cathode ray system
US3005123A (en) * 1959-07-16 1961-10-17 Griffiths Electronics Inc Electron gun construction
US3017531A (en) * 1959-12-16 1962-01-16 Gen Electric Electron gun electrode supports
US3200469A (en) * 1960-01-28 1965-08-17 Rca Corp Spherical grids and methods of making same
US3036238A (en) * 1960-04-29 1962-05-22 Sylvania Electric Prod High resolution c.r. tube
NL271319A (en) * 1960-11-14
US3255374A (en) * 1961-05-17 1966-06-07 Sylvania Electric Prod Electron discharge device with apertured grid electrode of spherical shape
NL294992A (en) * 1962-07-06
NL162243C (en) * 1970-09-04 1980-04-15 Philips Nv TELEVISION CAMERA TUBE.
US3870002A (en) * 1970-09-04 1975-03-11 Philips Corp Television camera tube with three electrode focusing lens
JPS5021074B1 (en) * 1973-01-10 1975-07-19
US3887830A (en) * 1973-09-07 1975-06-03 Raytheon Co Cathode ray tube with magnetic beam alignment means
US4049991A (en) * 1976-10-08 1977-09-20 Gte Sylvania Incorporated Longitudinal rib embossment in tri-apertured, substantially planar electrode
US4049990A (en) * 1976-10-08 1977-09-20 Gte Sylvania Incorporated CRT in-line gun electrode having strengthening ribs
US4319160A (en) * 1979-11-15 1982-03-09 North American Philips Consumer Electronics Corp. One piece astigmatic grid for color picture tube electron gun and method of making same
US4604548A (en) * 1980-05-29 1986-08-05 Rca Corporation Electron gun with afterglow eliminator
US4645469A (en) * 1980-08-04 1987-02-24 North American Philips Consumer Electronics Corp. Beam shaping CRT electrode and method of fabricating same
US4370592A (en) * 1980-10-29 1983-01-25 Rca Corporation Color picture tube having an improved inline electron gun with an expanded focus lens
US4595858A (en) * 1984-12-03 1986-06-17 Rca Corporation Reinforcing means for a cup-shaped electron gun electrode
US4952840A (en) * 1989-03-20 1990-08-28 Rca Licensing Corp. Strengthening means for a sidewall of a cup-shaped member for an electron gun assembly of a CRT

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB458746A (en) * 1935-03-19 1936-12-21 John Edgar Keyston Improvements in and relating to cathode ray tubes
US2135941A (en) * 1935-04-09 1938-11-08 Rca Corp Electrode structure
US2173498A (en) * 1935-11-16 1939-09-19 Loewe Opta Gmbh Hot cathode arrangement for a cathode ray tube
BE431236A (en) * 1937-11-24
US2217168A (en) * 1938-02-19 1940-10-08 Bell Telephone Labor Inc Electron discharge device
US2391780A (en) * 1943-10-13 1945-12-25 Rca Corp Electron discharge device
US2436265A (en) * 1945-07-27 1948-02-17 Du Mont Allen B Lab Inc Cathode-ray tube
US2443916A (en) * 1947-06-27 1948-06-22 Rca Corp Cathode-grid assembly for cathode-ray tubes
US2540621A (en) * 1948-02-19 1951-02-06 Rca Corp Electron gun structure
US2666162A (en) * 1949-10-21 1954-01-12 Commw Scient Ind Res Org Electronic counting device
US2581446A (en) * 1949-10-31 1952-01-08 Cons Eng Corp Supporting means for vacuum electrodes
US2582454A (en) * 1950-05-13 1952-01-15 Du Mont Allen B Lab Inc Cathode grid assembly
US2627047A (en) * 1951-07-03 1953-01-27 Rauland Corp Cathode-ray tube electrode
BE513449A (en) * 1951-08-11
US2638559A (en) * 1952-01-19 1953-05-12 Nat Video Corp Electrostatic lens for cathode-ray tubes

Also Published As

Publication number Publication date
US2888588A (en) 1959-05-26
BE527842A (en)
GB747755A (en) 1956-04-11
US2732511A (en) 1956-01-24
FR1098838A (en) 1955-08-22

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