CA941876A - Discharge lamps having improved thermionic cathodes - Google Patents

Discharge lamps having improved thermionic cathodes

Info

Publication number
CA941876A
CA941876A CA105,098A CA105098A CA941876A CA 941876 A CA941876 A CA 941876A CA 105098 A CA105098 A CA 105098A CA 941876 A CA941876 A CA 941876A
Authority
CA
Canada
Prior art keywords
discharge lamps
thermionic cathodes
improved thermionic
improved
cathodes
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
CA105,098A
Other versions
CA105098S (en
Inventor
Maurice G. Clarke
Norman Burgess
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.)
Thorn Lighting Ltd
Original Assignee
Thorn Lighting 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 Thorn Lighting Ltd filed Critical Thorn Lighting Ltd
Application granted granted Critical
Publication of CA941876A publication Critical patent/CA941876A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0735—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode
    • H01J61/0737—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material
CA105,098A 1970-02-11 1971-02-11 Discharge lamps having improved thermionic cathodes Expired CA941876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6662/70A GB1294383A (en) 1970-02-11 1970-02-11 Discharge lamps having improved thermionic cathodes

Publications (1)

Publication Number Publication Date
CA941876A true CA941876A (en) 1974-02-12

Family

ID=9818525

Family Applications (1)

Application Number Title Priority Date Filing Date
CA105,098A Expired CA941876A (en) 1970-02-11 1971-02-11 Discharge lamps having improved thermionic cathodes

Country Status (3)

Country Link
US (1) US3700951A (en)
CA (1) CA941876A (en)
GB (1) GB1294383A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916241A (en) * 1972-06-14 1975-10-28 Gte Sylvania Inc High pressure electric discharge lamp and electrode therefor
US3988629A (en) * 1974-10-07 1976-10-26 General Electric Company Thermionic wick electrode for discharge lamps
GB8303074D0 (en) * 1983-02-04 1983-03-09 Gen Electric Co Plc Electric discharge lamps
US4806826A (en) * 1986-12-16 1989-02-21 Gte Products Corporation High pressure sodium vapor discharge device
DE4026301A1 (en) * 1990-08-20 1992-02-27 Siemens Ag ELECTRON EMITTER OF A X-RAY TUBE
BE1007595A3 (en) * 1993-10-07 1995-08-16 Philips Electronics Nv HIGH-metal halide discharge LAMP.
CN104183460A (en) * 2013-05-28 2014-12-03 海洋王照明科技股份有限公司 Ceramic halogen lamp electrode and ceramic halogen lamp
CN104183457A (en) * 2013-05-28 2014-12-03 海洋王照明科技股份有限公司 Ceramic halogen lamp electrode

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953625A (en) * 1930-04-04 1934-04-03 Gen Scientific Corp Electrode for luminous positive column gaseous conducting devices
US2175345A (en) * 1935-07-12 1939-10-10 Gen Electric Electric gaseous discharge device
US2900554A (en) * 1951-06-01 1959-08-18 Rca Corp Sleeve for indirectly heated cathode
GB1137124A (en) * 1964-12-23 1968-12-18 Nat Res Dev Thermionic electron emitter
US3548242A (en) * 1967-05-16 1970-12-15 Sylvania Electric Prod High pressure electric discharge device and cathode

Also Published As

Publication number Publication date
GB1294383A (en) 1972-10-25
US3700951A (en) 1972-10-24

Similar Documents

Publication Publication Date Title
CA940999A (en) Discharge lamp thermionic cathode containing emission material
CA941876A (en) Discharge lamps having improved thermionic cathodes
CA934432A (en) Cathode for separable discharge tube
CA957007A (en) Electric filament lamp or discharge lamp
CA933998A (en) Metal-halide discharge lamps
CA896453A (en) Fluorescent phosphors
CA958065A (en) Electric filament lamp or discharge lamp
CA927901A (en) Mercury-vapor lamp
CA942371A (en) Secondary electron emissive electrode
CA923959A (en) Oblong discharge lamp
CA728769A (en) Thermionic cathodes
CA828293A (en) Thermionic cathodes for electron discharge devices
CA800111A (en) Electron discharge lamps
CA850241A (en) Discharge lamps
CA818010A (en) Electron discharge device cathodes
CA841729A (en) Arc discharge lamp
CA847491A (en) Discharge lamp
CA834877A (en) Discharge lamp
CA835861A (en) Strontium-barium halophosphate phosphor
CA805266A (en) Thermionic cathode
CA881083A (en) Glow discharge cathode
CA928373A (en) Thermionic hollow cathodes for gas discharge devices
CA915307A (en) Electron discharge tubes
CA875709A (en) Electron discharge tubes
CA843558A (en) Plasma cathode