GB501058A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB501058A
GB501058A GB22958/37A GB2295837A GB501058A GB 501058 A GB501058 A GB 501058A GB 22958/37 A GB22958/37 A GB 22958/37A GB 2295837 A GB2295837 A GB 2295837A GB 501058 A GB501058 A GB 501058A
Authority
GB
United Kingdom
Prior art keywords
cathode
lens
ray tubes
cylindrical
rods
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
GB22958/37A
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.)
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 GB22958/37A priority Critical patent/GB501058A/en
Priority to US225679D priority patent/US2223908A/en
Publication of GB501058A publication Critical patent/GB501058A/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

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

501,058. Cathode - ray tubes. BULL, C. S. Aug. 21, 1937, No. 22958. [Class 39 (i)] An electron beam is focused into a small spot by constraining electrons emitted from a rod-like cathode first into a sheet-like form by means of a cylindrical lens and then using a further lens to reduce the sheet-like beam to a spot on a luminescent or mosaic screen. The cathode may be a filament 8 placed between the rods 9 acting as a control electrode, which receives say a television signal. A flat boxshaped electrode 10 with the rods 9 forms the cylindrical lens and the second lens may be a spherical one formed by the electrodes 11, 12. A slotted diaphragm 13 stops electrons on the edge of the beam. The cathode may be indirectly heated and it may be enclosed in a box-shaped control electrode. The second lens may be cylindrical. The electrostatic lenses may be made by parallel plates. The cathode may be supplied with current intermittently, i.e. only during " black out " periods of the tube. Magnetic lenses may be used. Specification 434,111 is referred to.
GB22958/37A 1937-08-21 1937-08-21 Improvements in or relating to cathode ray tubes Expired GB501058A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB22958/37A GB501058A (en) 1937-08-21 1937-08-21 Improvements in or relating to cathode ray tubes
US225679D US2223908A (en) 1937-08-21 1938-08-19 Cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22958/37A GB501058A (en) 1937-08-21 1937-08-21 Improvements in or relating to cathode ray tubes

Publications (1)

Publication Number Publication Date
GB501058A true GB501058A (en) 1939-02-21

Family

ID=10187814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22958/37A Expired GB501058A (en) 1937-08-21 1937-08-21 Improvements in or relating to cathode ray tubes

Country Status (2)

Country Link
US (1) US2223908A (en)
GB (1) GB501058A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840754A (en) * 1954-09-01 1958-06-24 Rca Corp Electron beam tube
US6140956A (en) * 1997-06-25 2000-10-31 Cellutrac, Inc. Vehicle tracking and security system incorporating simultaneous voice and data communication
US6522265B1 (en) 1997-06-25 2003-02-18 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB609480A (en) * 1944-09-30 1948-10-01 Otto Ernst Heinrich Klemperer Improvements in or relating to a electron discharge apparatus in which a flattened or ribbon-shaped electron beam is employed
US2630543A (en) * 1950-12-22 1953-03-03 John M Cage Cathode-ray tube
NL187314B (en) * 1953-05-15 Toyama Chemical Co Ltd ANTIBACTERIAL PREPARATION, AS WELL AS A SUBSTITUTED IN SITE 1 7- (3-AMINOPYRROLIDINO) -6-FLUOR-4-OXO-1,4-DIHYDRO-1,8-NAPHTYRIDINE-3-CARBONIC ACID DERIVATE.
US2728007A (en) * 1953-07-01 1955-12-20 Rca Corp Cathode ray tube gun structure
US2813215A (en) * 1954-09-15 1957-11-12 Rca Corp Electron beam tube
US2813209A (en) * 1954-09-30 1957-11-12 Rca Corp Electron beam tube
US3207946A (en) * 1960-12-27 1965-09-21 Raytheon Co Electron gun for generating laminar electron flow
NL7208728A (en) * 1971-07-28 1973-12-28

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840754A (en) * 1954-09-01 1958-06-24 Rca Corp Electron beam tube
US6140956A (en) * 1997-06-25 2000-10-31 Cellutrac, Inc. Vehicle tracking and security system incorporating simultaneous voice and data communication
US6320535B1 (en) 1997-06-25 2001-11-20 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication
US6522265B1 (en) 1997-06-25 2003-02-18 Navox Corporation Vehicle tracking and security system incorporating simultaneous voice and data communication

Also Published As

Publication number Publication date
US2223908A (en) 1940-12-03

Similar Documents

Publication Publication Date Title
GB505632A (en) Improvements in and relating to cathode-ray tubes
GB480948A (en) Improvements in or relating to cathode ray tubes
GB501058A (en) Improvements in or relating to cathode ray tubes
GB556046A (en) Improvements relating to electron guns such as are used in cathode ray tubes
GB803221A (en) Improvements relating to electron guns
GB479064A (en) Improvements in and relating to cathode ray devices
GB878219A (en) Improvements in or relating to cathode ray tubes
GB487241A (en) Cathode ray tubes for intensity-controlled illumination
GB505751A (en) Improvements in or relating to cathode ray tubes
GB601948A (en) Improvements in or relating to cathode-ray tubes
GB538021A (en) Cathode ray tube devices
GB450973A (en) Improvements in or relating to cathode-ray tubes
GB453223A (en) Improvements in or relating to cathode ray tubes, preferably for television purposes
GB495707A (en) Improvements in or relating to focussing systems for use in electric discharge tubes
GB481430A (en) Improvements in or relating to cathode ray tubes
GB442724A (en) Braun tube
US2185378A (en) Electron gun for cathode ray tubes
GB455084A (en) Improvements in or relating to cathode ray tubes and circuits therefor
GB470496A (en) Television tube
GB474442A (en) Improvements in or relating to cathode ray tubes and apparatus embodying the same
GB486915A (en) Television receiving tube
GB825898A (en) Improvements in or relating to electric circuit arrangements incorporating cathode ray tubes
GB503954A (en) Improvements in and relating to cathode ray tubes
GB467611A (en) Improvements in or relating to cathode ray tubes and apparatus comprising them
GB470004A (en) Improvements in or relating to cathode ray tubes