GB693678A - Improvements in television camera tubes - Google Patents

Improvements in television camera tubes

Info

Publication number
GB693678A
GB693678A GB26276/51A GB2627651A GB693678A GB 693678 A GB693678 A GB 693678A GB 26276/51 A GB26276/51 A GB 26276/51A GB 2627651 A GB2627651 A GB 2627651A GB 693678 A GB693678 A GB 693678A
Authority
GB
United Kingdom
Prior art keywords
caesium
coating
wall
nov
photo
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
GB26276/51A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB693678A publication Critical patent/GB693678A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
    • H01J31/30—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at anode potential, e.g. iconoscope
    • H01J31/32—Tubes with image amplification section, e.g. image-iconoscope, supericonoscope
    • 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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
    • 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
    • H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

693,678. Television pick-up tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 9, 1951 (Nov. 13, 1950], No. 26276/51. Class 39(i) A television camera tube for producing electron-optical image magnification by photo-emission and electrical acceleration of electrons comprising a scanning electrode system provided on the same side of the image electrode as the electron-optical projection means and arranged in a side branch of the tube, is characterised in that a metal wall coating 17 is applied as a conductive layer to the inner wall of the side branch in order to avoid unequal potential distribution and at its end 18 nearer the electrode system is of a metal which binds caesium vapour. The coating 17 may be of aluminium and the coating 18 is preferably of gold but may be of silver; a deposit 11 of caesium binding material may be applied to the wall of the main part of the envelope. The photo-cathode may comprise a thin transparent layer 9 of indium covered with a layer 10 of silver or antimony and caesium.
GB26276/51A 1950-11-13 1951-11-09 Improvements in television camera tubes Expired GB693678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL295267X 1950-11-13

Publications (1)

Publication Number Publication Date
GB693678A true GB693678A (en) 1953-07-01

Family

ID=19782948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26276/51A Expired GB693678A (en) 1950-11-13 1951-11-09 Improvements in television camera tubes

Country Status (7)

Country Link
US (1) US2713129A (en)
BE (1) BE507061A (en)
CH (1) CH295267A (en)
DE (1) DE954071C (en)
FR (1) FR1045054A (en)
GB (1) GB693678A (en)
NL (2) NL79449C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329853A (en) * 1965-06-16 1967-07-04 Rca Corp Image orthicon with cesium getter adjacent electron multiplier

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1936419A (en) * 1930-06-03 1933-11-21 Gen Electric Photo-electric tube
US1831314A (en) * 1930-06-14 1931-11-10 G M Lab Inc Photoelectric tube
GB445485A (en) * 1934-10-24 1936-04-14 James Dwyer Mcgee Improvements in or relating to television transmitting apparatus
US2189988A (en) * 1937-09-28 1940-02-13 Rca Corp Photoelectric device
US2273639A (en) * 1938-10-25 1942-02-17 Rca Corp Selectivity control circuit
GB567650A (en) * 1943-03-19 1945-02-26 Cinema Television Ltd Improvements in or relating to alloys

Also Published As

Publication number Publication date
FR1045054A (en) 1953-11-24
NL79449C (en)
DE954071C (en) 1956-12-13
US2713129A (en) 1955-07-12
BE507061A (en)
NL157248B (en)
CH295267A (en) 1953-12-15

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