GB494791A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB494791A
GB494791A GB26211/37A GB2621137A GB494791A GB 494791 A GB494791 A GB 494791A GB 26211/37 A GB26211/37 A GB 26211/37A GB 2621137 A GB2621137 A GB 2621137A GB 494791 A GB494791 A GB 494791A
Authority
GB
United Kingdom
Prior art keywords
electrode
cathode
control electrode
electrodes
stem
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
GB26211/37A
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Publication of GB494791A publication Critical patent/GB494791A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
    • 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
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun

Abstract

494,791. Cathode - ray tubes. ELECTRICAL RESEARCH PRODUCTS, Inc. Sept. 28, 1937, No. 26211. Convention date, Oct. 10, 1936. [Class 39 (i)] The electrode system of a cathode-ray tube comprises a control electrode 30 enclosing an indirectly-heated cathode 28 with a flat emissive end, and elongated focusing electrode 32 enclosing the control electrode and a spoolshaped collimating electrode 33 arranged within the focusing electrode with its end near the middle thereof and having a bore of the same diameter as the aperture of the control electrode ; the distance of the cathode surface from the control electrode, the thickness of the control electrode, and the diameter of the opening of the control electrode are in the ratios 1 : 3 : 6; the distance of the electrode 33 from the electrode 30 is rather less than the diameter of the opening in the electrode. The cathode 28 and electrodes 30, 32 are mounted on an insulating disc 25, the two latter being held in position by a ridge 27 on the disc, which is supported from a stem 20 ; the electrode 32 may also be supported by rods from a collar on the stem. The neck of the tube comprises an inner portion 16 and an outer portion 17 ; the stem 20 is sealed to the portion 17 while the electrode 32 is held in place by a gauge 37 afterwards removed, fitting into the portion 16. The deflecting electrodes 46, 47 (not shown), 48, 49 are mounted on an insulating slab 44 carried by rods 39, 40, secured to a collar 38 on the portion 16. The rods 39, 40 also carry an anode 43 projecting into the space between the electrodes 32 and the portion 16 of the envelope. The leads to these electrodes are sealed through a joint between the flared end 19 of the portion 17 of the stem and the body 12 of the tube, which has a non-reflecting conducting lining 15 ; springs 55, 56 on the rods 39, 40 make contact with the lining 15. The terminals 59 of the deflecting electrodes and anodes are carried on a ring 60, the other terminals 57 being carried on a cap 58.
GB26211/37A 1936-10-10 1937-09-28 Improvements in or relating to electron discharge devices Expired GB494791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US104963A US2139678A (en) 1936-10-10 1936-10-10 Electron discharge device

Publications (1)

Publication Number Publication Date
GB494791A true GB494791A (en) 1938-11-01

Family

ID=22303382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26211/37A Expired GB494791A (en) 1936-10-10 1937-09-28 Improvements in or relating to electron discharge devices

Country Status (5)

Country Link
US (1) US2139678A (en)
BE (1) BE423568A (en)
FR (1) FR827560A (en)
GB (1) GB494791A (en)
NL (2) NL49663C (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432037A (en) * 1943-08-20 1947-12-02 Kreisler Mfg Corp Jacques Electron gun positioning means
US2467506A (en) * 1944-08-04 1949-04-19 Farnsworth Res Corp Electron gun
US2460608A (en) * 1945-01-12 1949-02-01 Rauland Corp Cathode-ray tube
FR957984A (en) * 1946-10-24 1950-03-02
US2559037A (en) * 1948-02-12 1951-07-03 Zenith Radio Corp Electron discharge device of the focussed-beam type
US2606300A (en) * 1950-01-19 1952-08-05 Zenith Radio Corp Electron discharge device
US2656481A (en) * 1950-12-13 1953-10-20 Du Mont Allen B Lab Inc Electron gun centering device for cathode-ray tubes
US2597363A (en) * 1951-06-29 1952-05-20 Ibm Cathode-ray storage tube
US2658161A (en) * 1952-01-09 1953-11-03 Rauland Corp Image-reproducing device
US2945143A (en) * 1958-04-03 1960-07-12 Shapiro Jack Compact cathode ray tube
US2971118A (en) * 1958-11-10 1961-02-07 Sylvania Electric Prod Electron discharge device
US3289028A (en) * 1963-10-03 1966-11-29 Gen Electric Appendage electron gun for light valve projection apparatus
US4082977A (en) * 1976-05-24 1978-04-04 Zenith Radio Corporation Electron gun for cathode ray tube detachable from base support

Also Published As

Publication number Publication date
NL84342C (en)
BE423568A (en)
US2139678A (en) 1938-12-13
NL49663C (en)
FR827560A (en) 1938-04-28

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