WO2008129487A3 - High pressure discharge lamp and vehicle headlight - Google Patents
High pressure discharge lamp and vehicle headlight Download PDFInfo
- Publication number
- WO2008129487A3 WO2008129487A3 PCT/IB2008/051493 IB2008051493W WO2008129487A3 WO 2008129487 A3 WO2008129487 A3 WO 2008129487A3 IB 2008051493 W IB2008051493 W IB 2008051493W WO 2008129487 A3 WO2008129487 A3 WO 2008129487A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- high pressure
- discharge lamp
- pressure discharge
- discharge
- vehicle headlight
- Prior art date
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
- H01J61/30—Vessels; Containers
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
-
- 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
- H01J61/045—Thermic screens or reflectors
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The invention relates to a high pressure discharge lamp (10) and a vehicle headlight (100) comprising the high pressure discharge lamp. The high pressure discharge lamp according to the invention comprises a discharge vessel (12) comprising electrodes (16, 18) for creating a discharge arc (20) and for defining a longitudinal axis (30) connecting the electrodes. The discharge arc is displaced with respect to the longitudinal axis at a distance on a displacement axis (32) arranged perpendicular to the longitudinal axis. The high pressure discharge lamp further comprises a reflective surface (40; 42; 44; 46; 50; 52) for reflecting light emitted by a discharge arc towards a light-transmission window (60; 62) of the discharge vessel while substantially preventing the reflected light to pass through the discharge arc. The effect of the measures according to the invention is that the reflective surface is arranged to redirect the reflected light away from the discharge arc towards the light-transmission window, thus improving an efficiency of the high pressure discharge lamp.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07106796.1 | 2007-04-24 | ||
EP07106796 | 2007-04-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008129487A2 WO2008129487A2 (en) | 2008-10-30 |
WO2008129487A3 true WO2008129487A3 (en) | 2008-12-18 |
Family
ID=39760920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2008/051493 WO2008129487A2 (en) | 2007-04-24 | 2008-04-18 | High pressure discharge lamp and vehicle headlight |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2008129487A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6010022B2 (en) * | 2010-05-26 | 2016-10-19 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | Gas discharge lamp |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19814788A1 (en) * | 1998-04-02 | 1999-10-07 | Bosch Gmbh Robert | Headlamp for cars with dipped beam and main beam |
DE19843418A1 (en) * | 1998-09-22 | 2000-03-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High-pressure discharge lamp and associated lighting system |
US6445129B1 (en) * | 1996-03-16 | 2002-09-03 | Robert Bosch Gmbh | Gas discharge lamp, in particular for motor-vehicle headlights |
WO2006021910A2 (en) * | 2004-08-26 | 2006-03-02 | Philips Intellectual Property & Standards Gmbh | Lamp with reflective coating |
US20070018581A1 (en) * | 2005-07-20 | 2007-01-25 | Koito Manufacturing Co., Ltd. | Discharge bulb and automobile headlamp |
-
2008
- 2008-04-18 WO PCT/IB2008/051493 patent/WO2008129487A2/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6445129B1 (en) * | 1996-03-16 | 2002-09-03 | Robert Bosch Gmbh | Gas discharge lamp, in particular for motor-vehicle headlights |
DE19814788A1 (en) * | 1998-04-02 | 1999-10-07 | Bosch Gmbh Robert | Headlamp for cars with dipped beam and main beam |
DE19843418A1 (en) * | 1998-09-22 | 2000-03-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High-pressure discharge lamp and associated lighting system |
WO2006021910A2 (en) * | 2004-08-26 | 2006-03-02 | Philips Intellectual Property & Standards Gmbh | Lamp with reflective coating |
US20070018581A1 (en) * | 2005-07-20 | 2007-01-25 | Koito Manufacturing Co., Ltd. | Discharge bulb and automobile headlamp |
Also Published As
Publication number | Publication date |
---|---|
WO2008129487A2 (en) | 2008-10-30 |
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