EP0492722A3 - Grid controlled gas discharge lamp - Google Patents

Grid controlled gas discharge lamp Download PDF

Info

Publication number
EP0492722A3
EP0492722A3 EP19910203345 EP91203345A EP0492722A3 EP 0492722 A3 EP0492722 A3 EP 0492722A3 EP 19910203345 EP19910203345 EP 19910203345 EP 91203345 A EP91203345 A EP 91203345A EP 0492722 A3 EP0492722 A3 EP 0492722A3
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
gas discharge
controlled gas
grid controlled
grid
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.)
Granted
Application number
EP19910203345
Other versions
EP0492722A2 (en
EP0492722B1 (en
Inventor
Klaas Vegter
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0492722A2 publication Critical patent/EP0492722A2/en
Publication of EP0492722A3 publication Critical patent/EP0492722A3/en
Application granted granted Critical
Publication of EP0492722B1 publication Critical patent/EP0492722B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
    • 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
    • H01J61/10—Shields, screens, or guides for influencing the discharge
    • 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
EP19910203345 1990-12-27 1991-12-18 Grid controlled gas discharge lamp Expired - Lifetime EP0492722B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63437090A 1990-12-27 1990-12-27
US634370 1990-12-27

Publications (3)

Publication Number Publication Date
EP0492722A2 EP0492722A2 (en) 1992-07-01
EP0492722A3 true EP0492722A3 (en) 1992-12-30
EP0492722B1 EP0492722B1 (en) 1995-05-10

Family

ID=24543502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910203345 Expired - Lifetime EP0492722B1 (en) 1990-12-27 1991-12-18 Grid controlled gas discharge lamp

Country Status (3)

Country Link
EP (1) EP0492722B1 (en)
JP (1) JPH04294047A (en)
DE (1) DE69109644T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5150018A (en) * 1991-08-12 1992-09-22 North American Philips Corporation Gas discharge lamp with grid and control circuits therefor
SE515637C2 (en) * 2000-01-24 2001-09-17 Auralight Ab Security structure for fluorescent lamps

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA685386A (en) * 1964-04-28 Takayama Kazuo Electrical discharge tube
EP0115444A2 (en) * 1983-02-01 1984-08-08 GTE Laboratories Incorporated Beam mode lamp with voltage modifying electrode

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60232657A (en) * 1984-05-02 1985-11-19 Hitachi Ltd Low pressure mercury vapor discharge lamp
JPH0640478B2 (en) * 1985-02-20 1994-05-25 富士通機電株式会社 Hot cathode discharge lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA685386A (en) * 1964-04-28 Takayama Kazuo Electrical discharge tube
EP0115444A2 (en) * 1983-02-01 1984-08-08 GTE Laboratories Incorporated Beam mode lamp with voltage modifying electrode

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 087 (E-393)5 April 1986 & JP-A-60 232 657 ( HITACHI SEISAKUSHO ) 19 November 1985 *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 023 (E-473)22 January 1987 & JP-A-61 193 353 ( FUJITSU KIDEN LTD ) 27 August 1986 *

Also Published As

Publication number Publication date
DE69109644T2 (en) 1996-01-25
EP0492722A2 (en) 1992-07-01
DE69109644D1 (en) 1995-06-14
EP0492722B1 (en) 1995-05-10
JPH04294047A (en) 1992-10-19

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