DE602009001080D1 - Discharge vessel for discharge lamps of high intensity - Google Patents

Discharge vessel for discharge lamps of high intensity

Info

Publication number
DE602009001080D1
DE602009001080D1 DE602009001080T DE602009001080T DE602009001080D1 DE 602009001080 D1 DE602009001080 D1 DE 602009001080D1 DE 602009001080 T DE602009001080 T DE 602009001080T DE 602009001080 T DE602009001080 T DE 602009001080T DE 602009001080 D1 DE602009001080 D1 DE 602009001080D1
Authority
DE
Germany
Prior art keywords
light
emitting
portions
vessel
side end
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.)
Active
Application number
DE602009001080T
Other languages
German (de)
Inventor
Keiichiro Watanabe
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.)
NGK Insulators Ltd
Original Assignee
NGK Insulators 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 NGK Insulators Ltd filed Critical NGK Insulators Ltd
Publication of DE602009001080D1 publication Critical patent/DE602009001080D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
    • 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
    • H01J61/302—Vessels; Containers characterised by the material of the vessel
    • 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
    • H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

An object of the present invention is to improve the color temperature stability of light emission and maintain durability when repeating light-on and light-off, while narrowing light emission from the light-emitting vessel. A light-emitting container 1 for a high intensity discharge lamp includes: a light-emitting vessel 7 of a translucent polycrystalline ceramics having a substantially constant linear transmittance in a visible light region and having a central light-emitting portion 7e, thick portions 7d provided on both sides of the central light-emitting portion 7e and thicker than the central light-emitting portion 7e, respectively, and side end portions 7c provided on outer sides of the thick portions 7d, respectively; tubular portions 3 protruded from the side end portions, respectively; electrodes 5 provided in the inner space of the light-emitting vessel; electrode holding members 2 inserted through the tubular portions and holding the electrodes, respectively; a sealing material 4 sealing a space between the tubular portion and electrode holding member; and light-shielding films 11 for coating the outer surface 7b of the thick portions over full-circumference around a tube axis of the light-emitting vessel. The outer surfaces of the central light-emitting portion 7e, the side end portions 7c and the tubular portions 3 are not coated with the light-shielding film.
DE602009001080T 2008-09-04 2009-09-03 Discharge vessel for discharge lamps of high intensity Active DE602009001080D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008226796A JP5243153B2 (en) 2008-09-04 2008-09-04 Luminescent container for high-intensity discharge lamp

Publications (1)

Publication Number Publication Date
DE602009001080D1 true DE602009001080D1 (en) 2011-05-26

Family

ID=41692922

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602009001080T Active DE602009001080D1 (en) 2008-09-04 2009-09-03 Discharge vessel for discharge lamps of high intensity

Country Status (4)

Country Link
EP (1) EP2172961B1 (en)
JP (1) JP5243153B2 (en)
AT (1) ATE505809T1 (en)
DE (1) DE602009001080D1 (en)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05283050A (en) * 1992-03-30 1993-10-29 Toshiba Lighting & Technol Corp Projection illuminant device
JPH06342644A (en) * 1992-05-29 1994-12-13 Iwasaki Electric Co Ltd Reflection type high pressure discharge lamp
US5708328A (en) 1992-06-03 1998-01-13 General Electric Company Universal burn metal halide lamp
JPH07130336A (en) * 1993-10-29 1995-05-19 Matsushita Electron Corp Metal halide lamp
GB9707291D0 (en) 1997-04-04 1997-05-28 Gen Electric Ceramic metal halide arc lamp and method of making it
JP2004006198A (en) * 2002-07-26 2004-01-08 Ngk Insulators Ltd High pressure discharge lamp, lighting system, headlamp for automobile, and arc tube for high pressure discharge lamp
US20040056600A1 (en) * 2002-09-19 2004-03-25 Lapatovich Walter P. Electric lamp with condensate reservoir and method of operation thereof
CN100543923C (en) * 2002-09-06 2009-09-23 皇家飞利浦电子股份有限公司 Not mercurous metal halide lamp
JP2004227983A (en) * 2003-01-24 2004-08-12 Nec Lighting Ltd Ultrahigh-pressure mercury lamp
JP2006093045A (en) * 2004-09-27 2006-04-06 Toshiba Lighting & Technology Corp High-pressure discharge lamp and lighting system
DE102004056004A1 (en) * 2004-11-19 2006-05-24 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High pressure discharge lamp
JP4743847B2 (en) * 2005-05-18 2011-08-10 株式会社小糸製作所 Automotive headlamps
US7852006B2 (en) * 2005-06-30 2010-12-14 General Electric Company Ceramic lamp having molybdenum-rhenium end cap and systems and methods therewith
JP2007026921A (en) * 2005-07-19 2007-02-01 Koito Mfg Co Ltd Discharge bulb for automobile

Also Published As

Publication number Publication date
ATE505809T1 (en) 2011-04-15
EP2172961B1 (en) 2011-04-13
JP5243153B2 (en) 2013-07-24
JP2010062010A (en) 2010-03-18
EP2172961A1 (en) 2010-04-07

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