EP0403211A3 - Arc tube for a high pressure discharge lamp - Google Patents

Arc tube for a high pressure discharge lamp Download PDF

Info

Publication number
EP0403211A3
EP0403211A3 EP19900306357 EP90306357A EP0403211A3 EP 0403211 A3 EP0403211 A3 EP 0403211A3 EP 19900306357 EP19900306357 EP 19900306357 EP 90306357 A EP90306357 A EP 90306357A EP 0403211 A3 EP0403211 A3 EP 0403211A3
Authority
EP
European Patent Office
Prior art keywords
arc tube
high pressure
discharge lamp
pressure discharge
discharge chamber
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Withdrawn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
EP19900306357
Other languages
German (de)
French (fr)
Other versions
EP0403211A2 (en
Inventor
Kevin Hick
Barry Preston
Bruce Haywood Sharpe Rambaldini
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 EMI PLC
Original Assignee
Thorn EMI PLC
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 EMI PLC filed Critical Thorn EMI PLC
Publication of EP0403211A2 publication Critical patent/EP0403211A2/en
Publication of EP0403211A3 publication Critical patent/EP0403211A3/en
Withdrawn legal-status Critical Current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
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/827—Metal halide arc lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

An arc tube (12, 46, 48), provided for a high pressure discharge lamp, includes a discharge chamber (24) containing a fill. Electrical conductors (26, 28) extend into the discharge chamber (24) to form electrodes (32, 34). The electrical conductors (26, 28) are sealed in the arc tube (12, 46, 48) by a single pinch seal portion (30). At the interface (44) of the discharge chamber (24) and the pinch seal portion (30), the discharge chamber has at least in part a non-concave outline. This outline may be rectilinear or convex.
EP19900306357 1989-06-15 1990-06-11 Arc tube for a high pressure discharge lamp Withdrawn EP0403211A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8913798 1989-06-15
GB898913798A GB8913798D0 (en) 1989-06-15 1989-06-15 Arc tube for a high pressure discharge lamp

Publications (2)

Publication Number Publication Date
EP0403211A2 EP0403211A2 (en) 1990-12-19
EP0403211A3 true EP0403211A3 (en) 1991-07-10

Family

ID=10658499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900306357 Withdrawn EP0403211A3 (en) 1989-06-15 1990-06-11 Arc tube for a high pressure discharge lamp

Country Status (3)

Country Link
EP (1) EP0403211A3 (en)
JP (1) JPH0353445A (en)
GB (1) GB8913798D0 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219861A2 (en) * 1985-10-24 1987-04-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Process for manufacturing a metal halide high-pressure discharge lamp having a single pinch, and a lamp manufactured according to this process
EP0230051A1 (en) * 1986-01-15 1987-07-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High-pressure discharge lamp and method for its manufacture

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH067474B2 (en) * 1985-04-18 1994-01-26 東芝ライテック株式会社 Compact high pressure metal vapor discharge lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219861A2 (en) * 1985-10-24 1987-04-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Process for manufacturing a metal halide high-pressure discharge lamp having a single pinch, and a lamp manufactured according to this process
EP0230051A1 (en) * 1986-01-15 1987-07-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High-pressure discharge lamp and method for its manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 88 (E-490)[2535], 18th March 1987; & JP-A-61 240 561 (TOSHIBA) 25-10-1986 *

Also Published As

Publication number Publication date
EP0403211A2 (en) 1990-12-19
JPH0353445A (en) 1991-03-07
GB8913798D0 (en) 1989-08-02

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