GB605572A - Improvements in or relating to circuit arrangements embodying cathode ray tubes - Google Patents

Improvements in or relating to circuit arrangements embodying cathode ray tubes

Info

Publication number
GB605572A
GB605572A GB19378/45A GB1937845A GB605572A GB 605572 A GB605572 A GB 605572A GB 19378/45 A GB19378/45 A GB 19378/45A GB 1937845 A GB1937845 A GB 1937845A GB 605572 A GB605572 A GB 605572A
Authority
GB
United Kingdom
Prior art keywords
coils
centre
ray tubes
relating
cathode ray
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
GB19378/45A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB19378/45A priority Critical patent/GB605572A/en
Priority to FR936015D priority patent/FR936015A/en
Priority to US715670A priority patent/US2467009A/en
Publication of GB605572A publication Critical patent/GB605572A/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
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses

Landscapes

  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

605,572. Cathode-ray tubes. BULL, E. W., and PEMBERTON, M. E. July 28, 1945, No. 19378. [Class 39 (i)] In a cathode-ray tube, pin-cushion or barrel distortion, produced owing to the centre of curvature of the fluorescent or mosaic screen not coinciding with the centre of deflection of the beam, is corrected by providing between the screen and the centre of deflection a field, independent of the deflecting field, which increases in intensity outwardly from the axis of the beam when undeflected. A circular yoke 15, preferably laminated, is positioned in front of the deflecting coils 11, 12, and provided with four coils 16 wound in series about symmetrically disposed segments of the yoke. The angle over which each.coil 16 is wound may be varied and the current in each coil may be adjusted. The coils are fed with steady and/or varying current or voltage such as of saw-tooth form. Electrodes disposed inside the tube may be used instead of and corresponding to the coils 16. Specifications 466,826, 471,103 and 486,467 are referred to.
GB19378/45A 1945-07-28 1945-07-28 Improvements in or relating to circuit arrangements embodying cathode ray tubes Expired GB605572A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB19378/45A GB605572A (en) 1945-07-28 1945-07-28 Improvements in or relating to circuit arrangements embodying cathode ray tubes
FR936015D FR936015A (en) 1945-07-28 1946-11-19 Device for circuit containing a cathode ray tube
US715670A US2467009A (en) 1945-07-28 1946-12-12 Circuit arrangement embodying cathode-ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19378/45A GB605572A (en) 1945-07-28 1945-07-28 Improvements in or relating to circuit arrangements embodying cathode ray tubes

Publications (1)

Publication Number Publication Date
GB605572A true GB605572A (en) 1948-07-27

Family

ID=10128355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19378/45A Expired GB605572A (en) 1945-07-28 1945-07-28 Improvements in or relating to circuit arrangements embodying cathode ray tubes

Country Status (3)

Country Link
US (1) US2467009A (en)
FR (1) FR936015A (en)
GB (1) GB605572A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834901A (en) * 1954-05-06 1958-05-13 Rca Corp Cathode ray tube adjunct
US2943219A (en) * 1955-09-19 1960-06-28 Philco Corp Beam positioning apparatus for cathode ray tubes
US2892962A (en) * 1955-10-07 1959-06-30 Karl F Ross Electronic lens system
US3035199A (en) * 1957-11-29 1962-05-15 Gen Dynamics Corp Lens deflection in the electro optical system of a cathode ray tube
US2944173A (en) * 1958-07-17 1960-07-05 Hazeltine Research Inc Cathode-ray tube scanning apparatus
US3023343A (en) * 1960-01-11 1962-02-27 Ibm Information recording and display apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB385358I5 (en) * 1935-10-31
US2157182A (en) * 1935-12-31 1939-05-09 Rca Corp Cathode ray deflecting device
US2165803A (en) * 1936-04-25 1939-07-11 Rca Corp Cathode ray deflecting device
NL59153C (en) * 1938-04-25
DE972332C (en) * 1938-11-24 1959-07-02 Fernseh Gmbh Electromagnetic deflection device for cathode ray tubes, especially for televisions
US2230111A (en) * 1938-11-30 1941-01-28 Fernseh Ag Deflecting device for cathode ray tubes
US2406740A (en) * 1944-02-14 1946-09-03 Farnsworth Television & Radio Keystone correction apparatus

Also Published As

Publication number Publication date
FR936015A (en) 1948-07-07
US2467009A (en) 1949-04-12

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