FR855209A - Perfectionnement aux lentilles électroniques - Google Patents

Perfectionnement aux lentilles électroniques

Info

Publication number
FR855209A
FR855209A FR855209DA FR855209A FR 855209 A FR855209 A FR 855209A FR 855209D A FR855209D A FR 855209DA FR 855209 A FR855209 A FR 855209A
Authority
FR
France
Prior art keywords
further training
electronic lenses
lenses
electronic
training
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
Other languages
English (en)
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR855209A publication Critical patent/FR855209A/fr
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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
    • H01J29/66—Magnetic lenses using electromagnetic means only

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
FR855209D 1938-06-28 1939-05-24 Perfectionnement aux lentilles électroniques Expired FR855209A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19093/38A GB516478A (en) 1938-06-28 1938-06-28 Improvements in or relating to magnetic electron lenses

Publications (1)

Publication Number Publication Date
FR855209A true FR855209A (fr) 1940-05-06

Family

ID=10123665

Family Applications (1)

Application Number Title Priority Date Filing Date
FR855209D Expired FR855209A (fr) 1938-06-28 1939-05-24 Perfectionnement aux lentilles électroniques

Country Status (5)

Country Link
US (1) US2294123A (fr)
CA (1) CA432539A (fr)
DE (1) DE754660C (fr)
FR (1) FR855209A (fr)
GB (1) GB516478A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469165A (en) * 1946-10-29 1949-05-03 Rca Corp Correction device for electron lenses
GB664813A (en) * 1947-08-29 1952-01-16 Emi Ltd Improvements relating to apparatus embodying electron discharge tubes
US2892962A (en) * 1955-10-07 1959-06-30 Karl F Ross Electronic lens system
US3163794A (en) * 1960-06-20 1964-12-29 Philco Corp Deflection yoke with separable portions for crt with constricted neck
US3165677A (en) * 1960-08-30 1965-01-12 Gen Instrument Corp Television tube deflection coil assembly with separable yoke sections

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB462683A (en) * 1935-09-12 1937-03-12 Alfred Henry Gilbert Improvements in or relating to methods of mounting deflecting and focussing means for cathode-ray tubes and the like

Also Published As

Publication number Publication date
CA432539A (fr) 1946-01-15
DE754660C (de) 1953-03-09
GB516478A (en) 1940-01-03
US2294123A (en) 1942-08-25

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