EP0087962A3 - Beam mode fluorescent lamp having dual cathodes with unipotential ends - Google Patents

Beam mode fluorescent lamp having dual cathodes with unipotential ends Download PDF

Info

Publication number
EP0087962A3
EP0087962A3 EP83301034A EP83301034A EP0087962A3 EP 0087962 A3 EP0087962 A3 EP 0087962A3 EP 83301034 A EP83301034 A EP 83301034A EP 83301034 A EP83301034 A EP 83301034A EP 0087962 A3 EP0087962 A3 EP 0087962A3
Authority
EP
European Patent Office
Prior art keywords
electrodes
lamp
beam mode
unipotential
anode
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.)
Withdrawn
Application number
EP83301034A
Other languages
German (de)
French (fr)
Other versions
EP0087962A2 (en
Inventor
Wojciech W. Byszewski
Joseph M. Proud
Bowman A. Budinger
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.)
Verizon Laboratories Inc
Original Assignee
GTE Laboratories Inc
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 GTE Laboratories Inc filed Critical GTE Laboratories Inc
Publication of EP0087962A2 publication Critical patent/EP0087962A2/en
Publication of EP0087962A3 publication Critical patent/EP0087962A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J63/00—Cathode-ray or electron-stream lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)

Abstract

A beam mode lamp has two thermionic electrodes (33, 34) which when energized by AC power function alternately as cathode and anode. Electrodes emitted from a cathode are shaped by the anode into electron beams (e) which excite a gaseous mixture into radiating ultraviolet light and secon­ ary electrons. A phosphor coating (37) on the envelope (31) of the lamp connects the ultraviolet radiation into visible light. During start the electrodes (33, 34) are connected in series. During operation the electrodes (33, 34) are discon­ nected from each other. The ends of each electrode are then connected making the two ends of an electrode at substan­ tially the same electrical potential. This arrangement results in improved luminous output efficacy and longer operating life of the lamp.
EP83301034A 1982-02-26 1983-02-25 Beam mode fluorescent lamp having dual cathodes with unipotential ends Withdrawn EP0087962A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35267682A 1982-02-26 1982-02-26
US352676 1982-02-26

Publications (2)

Publication Number Publication Date
EP0087962A2 EP0087962A2 (en) 1983-09-07
EP0087962A3 true EP0087962A3 (en) 1984-05-09

Family

ID=23386047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83301034A Withdrawn EP0087962A3 (en) 1982-02-26 1983-02-25 Beam mode fluorescent lamp having dual cathodes with unipotential ends

Country Status (2)

Country Link
EP (1) EP0087962A3 (en)
JP (1) JPS58157048A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751435A (en) * 1984-12-13 1988-06-14 Gte Laboratories Incorporated Dual cathode beam mode fluorescent lamp with capacitive ballast
JPH03116654U (en) * 1990-03-15 1991-12-03
RU2505744C2 (en) * 2012-03-06 2014-01-27 Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии) Electric lighting system (versions)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378724A (en) * 1965-08-03 1968-04-16 New Nippon Electric Co Two-filament arc discharge lamp having alternating discharge spots thereon
DE2151854A1 (en) * 1971-10-19 1973-04-26 Original Hanau Quarzlampen SWITCH ARRANGEMENT FOR ELECTRODE COIL OF DISCHARGE LAMPS

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378724A (en) * 1965-08-03 1968-04-16 New Nippon Electric Co Two-filament arc discharge lamp having alternating discharge spots thereon
DE2151854A1 (en) * 1971-10-19 1973-04-26 Original Hanau Quarzlampen SWITCH ARRANGEMENT FOR ELECTRODE COIL OF DISCHARGE LAMPS

Also Published As

Publication number Publication date
JPS58157048A (en) 1983-09-19
EP0087962A2 (en) 1983-09-07
JPH0454343B2 (en) 1992-08-31

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19830309

AK Designated contracting states

Designated state(s): DE FR GB NL

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): DE FR GB NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19841112

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BYSZEWSKI, WOJCIECH W.

Inventor name: PROUD, JOSEPH M.

Inventor name: BUDINGER, BOWMAN A.