GB499848A - Improvements relating to the control of electronic rays - Google Patents

Improvements relating to the control of electronic rays

Info

Publication number
GB499848A
GB499848A GB11695/37A GB1169537A GB499848A GB 499848 A GB499848 A GB 499848A GB 11695/37 A GB11695/37 A GB 11695/37A GB 1169537 A GB1169537 A GB 1169537A GB 499848 A GB499848 A GB 499848A
Authority
GB
United Kingdom
Prior art keywords
electron
mirror
electrons
lens
reflected
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
GB11695/37A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB499848A publication Critical patent/GB499848A/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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/60—Mirrors

Landscapes

  • Electron Beam Exposure (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

499,848. Cathode-ray tubes. BRITISH THOMSON-HOUSTON CO:, Ltd. April 23, 1937, No. 11695. Void. Convention date, April 25, 1936. [Class 39 (i)] Relates to systems for the electron-optical reproduction of a visible image in which an electron beam is reflected by a structure referred to as an electron mirror such as is described in Specifications 458,015 and 460,288. In Fig. 1, an electron beam 5 passing through a lens 6 is reflected from an electron mirror consisting of a plate 2 and diaphragm 3 provided with a bias voltage. A homogeneous magnetic field 4 is provided to cause the incident and reflected beams to take the path shown, making an angle 0 with each other, and it is stated this arrangement "increases the efficiency of the electron yield as the surface of the mirror can be more fully utilized without the picture being distorted." In Fig. 2, electron rays from an object 8 pass through a lens 9 and, after reflection from the mirror 10, through a further lens 11 on to a receiver 12. It is stated that " all electrons issuing from the object 8 are employed for reproduction no matter whether this is a surface itself emitting electrons, a foil that is having the rays pass through it or a surface that is reflecting electrons, in which case the primary and secondary electrons can have different speeds throughout."
GB11695/37A 1936-04-25 1937-04-23 Improvements relating to the control of electronic rays Expired GB499848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE499848X 1936-04-25

Publications (1)

Publication Number Publication Date
GB499848A true GB499848A (en) 1939-01-30

Family

ID=6545529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11695/37A Expired GB499848A (en) 1936-04-25 1937-04-23 Improvements relating to the control of electronic rays

Country Status (2)

Country Link
US (1) US2163787A (en)
GB (1) GB499848A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918752C (en) * 1941-02-25 1954-10-04 Emi Ltd Arrangement for image separation tubes

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506659A (en) * 1941-04-11 1950-05-09 Csf Electron discharge tube
US2442848A (en) * 1942-03-09 1948-06-08 Farnsworth Res Corp Electron control tube
US2489156A (en) * 1943-03-09 1949-11-22 Westinghouse Electric Corp Oscillation generator of the reflex type
US2572494A (en) * 1946-06-28 1951-10-23 Rca Corp Velocity selection in electron tubes
BE481554A (en) * 1947-06-26
US2653993A (en) * 1948-04-29 1953-09-29 Rca Corp Simultaneous color television optical system
US2937315A (en) * 1955-08-01 1960-05-17 Kaiser Ind Corp Electronic device
BE569609A (en) * 1957-07-22
US3013179A (en) * 1958-05-01 1961-12-12 Gen Electric System for producing high charge density electron beam
US4739218A (en) * 1985-04-18 1988-04-19 Schwartz Samuel A Short cathode ray tube
US6617779B1 (en) 2001-10-04 2003-09-09 Samuel A. Schwartz Multi-bend cathode ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918752C (en) * 1941-02-25 1954-10-04 Emi Ltd Arrangement for image separation tubes

Also Published As

Publication number Publication date
US2163787A (en) 1939-06-27

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