GB519111A - Improvements in and relating to cathode ray tubes - Google Patents

Improvements in and relating to cathode ray tubes

Info

Publication number
GB519111A
GB519111A GB1715238A GB1715238A GB519111A GB 519111 A GB519111 A GB 519111A GB 1715238 A GB1715238 A GB 1715238A GB 1715238 A GB1715238 A GB 1715238A GB 519111 A GB519111 A GB 519111A
Authority
GB
United Kingdom
Prior art keywords
electrode
cathode
diameter
distance
apertured
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
GB1715238A
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.)
Pye Electronic Products Ltd
Original Assignee
Pye 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 Pye Ltd filed Critical Pye Ltd
Priority to GB1715238A priority Critical patent/GB519111A/en
Publication of GB519111A publication Critical patent/GB519111A/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
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

519,111. Cathode-ray tubes. PYE, Ltd., and LIEBMANN, G. June 9, 1938, No. 17152. Drawings to Specification. [Class 39 (i)] In a cathode-ray tube having an apertured modulating electrode in front of an emissive cathode the diameter of the aperture in the electrode is not greater than 1 mm., and if this diameter is a the distance from the emissive surface from the further face of the apertured electrode is less than a and preferably about a/2. A further apertured electrode may be spaced at a distance of approximately a from the modulating electrode, and the diameter of the aperture in this electrode is about 2a, and the thickness of this electrode is about a/2, that of the modulating electrode being about a/4. A further electrode may be situated at a distance of about 10a from the second. Numerical examples are given. The construction and arrangement of the electrodes, apart from the particular ratios set forth, are the same as those described in Specification 503,074. Specification 503,125 also is referred to.
GB1715238A 1938-06-09 1938-06-09 Improvements in and relating to cathode ray tubes Expired GB519111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1715238A GB519111A (en) 1938-06-09 1938-06-09 Improvements in and relating to cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1715238A GB519111A (en) 1938-06-09 1938-06-09 Improvements in and relating to cathode ray tubes

Publications (1)

Publication Number Publication Date
GB519111A true GB519111A (en) 1940-03-18

Family

ID=10090195

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1715238A Expired GB519111A (en) 1938-06-09 1938-06-09 Improvements in and relating to cathode ray tubes

Country Status (1)

Country Link
GB (1) GB519111A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458962A (en) * 1944-10-18 1949-01-11 Hartford Nat Bank & Trust Co Cathode-ray tube
US2509053A (en) * 1947-11-08 1950-05-23 Bell Telephone Labor Inc Space current device employing mutually bombarded electrodes
US2523099A (en) * 1947-09-12 1950-09-19 Hartford Nat Bank & Trust Co Electric discharge tube comprising a directional electron beam
US2542108A (en) * 1947-10-25 1951-02-20 Emi Ltd Mounting of electrode structures in envelopes
FR2237308A1 (en) * 1973-07-09 1975-02-07 Hughes Aircraft Co

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458962A (en) * 1944-10-18 1949-01-11 Hartford Nat Bank & Trust Co Cathode-ray tube
US2523099A (en) * 1947-09-12 1950-09-19 Hartford Nat Bank & Trust Co Electric discharge tube comprising a directional electron beam
US2542108A (en) * 1947-10-25 1951-02-20 Emi Ltd Mounting of electrode structures in envelopes
US2509053A (en) * 1947-11-08 1950-05-23 Bell Telephone Labor Inc Space current device employing mutually bombarded electrodes
FR2237308A1 (en) * 1973-07-09 1975-02-07 Hughes Aircraft Co

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