GB393471A - Improvements in and relating to light-sensitive devices - Google Patents

Improvements in and relating to light-sensitive devices

Info

Publication number
GB393471A
GB393471A GB29513/32A GB2951332A GB393471A GB 393471 A GB393471 A GB 393471A GB 29513/32 A GB29513/32 A GB 29513/32A GB 2951332 A GB2951332 A GB 2951332A GB 393471 A GB393471 A GB 393471A
Authority
GB
United Kingdom
Prior art keywords
cathode
anode
oct
caesium
thomson
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
GB29513/32A
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 GB393471A publication Critical patent/GB393471A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

393,471. Photo-electric cells. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Thomson, H. E. ; 1520, Nott Street, Schenectady, New York, U.S.A.) Oct. 21, 1932, .No. 29513. Convention date, Oct. 23, 1931. [Class 39 (i).] A gas-filled cell has a cathode in the form of a plate 4, an anode consisting of a flat helix 7 surrounding the cathode, and two plane grid electrodes 9 arranged one on each side of the anode and connected with the cathode directly or through a source of potential 14 lower than that of the anode so as to act as collectors of ions and prevent bombardment of the cathode. The filling may be argon at a pressure of 20 to 300 microns. The cathode may be coated with silver by electroplating, chemical deposition, or electric sputtering, and the coating oxidized by passing a glow discharge between the cathode and anode in an oxidizing atmosphere ; caesium is distilled from a pellet in a capsule 8, and excess caesium is removed.
GB29513/32A 1931-10-23 1932-10-21 Improvements in and relating to light-sensitive devices Expired GB393471A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US393471XA 1931-10-23 1931-10-23

Publications (1)

Publication Number Publication Date
GB393471A true GB393471A (en) 1933-06-08

Family

ID=21904989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29513/32A Expired GB393471A (en) 1931-10-23 1932-10-21 Improvements in and relating to light-sensitive devices

Country Status (1)

Country Link
GB (1) GB393471A (en)

Similar Documents

Publication Publication Date Title
GB406353A (en) Improvements in or relating to cathode ray tubes and the like
GB441250A (en) Improvements in and relating to oxide coated cathodes for gaseous electric discharge devices
GB594338A (en) Photo-electric electron multiplier
GB393471A (en) Improvements in and relating to light-sensitive devices
GB400406A (en) Improvements in and relating to electric valve circuits
GB353394A (en) Improvements in light sensitive electric discharge devices
GB364006A (en) Improvements in and relating to photo-electric apparatus
GB363103A (en) Improvements in and relating to photo-electric apparatus
GB477916A (en) Improvements in or relating to electric discharge tubes containing secondary electron-emitting means
GB415994A (en) Improvements relating to photo-electric tubes
GB479733A (en) Improvements in or relating to the manufacture of activated electrodes for photo-electric cells or secondary electron multipliers
GB567441A (en) Improvements in or relating to electron discharge devices comprising a photo-electric cathode and one or more secondary electron emitting electrodes
GB502835A (en) Improvements in or relating to photo-electric cells
GB570199A (en) Improvements in or relating to photoelectric cells
GB455899A (en) Preparation of the light-sensitive electrode of photo-electric cells
GB375639A (en) Improvements in or relating to photo-electric cells
GB279937A (en) Improvements in or relating to photo-electric cells
GB429725A (en) Improvements in or relating to photo-sensitive electric discharge devices and circuit arrangements incorporating the same
GB379893A (en) Improvements in or relating to photo-electric devices
GB303476A (en)
GB468146A (en) Improvements in or relating to photoelectric cells
GB344499A (en) Improvements relating to light sensitive electric cells
GB553841A (en) Improvements in or relating to space discharge devices such as photoelectric cells
GB426205A (en) Improvements in and relating to photo-electric cells and the like
GB389097A (en) Improvements in or relating to photoelectric cells