WO2003083900A1 - Halogen headlight lamp for an automobile - Google Patents

Halogen headlight lamp for an automobile Download PDF

Info

Publication number
WO2003083900A1
WO2003083900A1 PCT/IB2003/001123 IB0301123W WO03083900A1 WO 2003083900 A1 WO2003083900 A1 WO 2003083900A1 IB 0301123 W IB0301123 W IB 0301123W WO 03083900 A1 WO03083900 A1 WO 03083900A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamp
cup
halogen headlight
lamp bulb
shaped component
Prior art date
Application number
PCT/IB2003/001123
Other languages
French (fr)
Inventor
Rolf Gervelmeyer
Original Assignee
Philips Intellectual Property & Standards Gmbh
Koninklijke Philips Electronics N.V.
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 Intellectual Property & Standards Gmbh, Koninklijke Philips Electronics N.V. filed Critical Philips Intellectual Property & Standards Gmbh
Priority to AU2003209951A priority Critical patent/AU2003209951A1/en
Priority to EP03745360A priority patent/EP1540704A1/en
Publication of WO2003083900A1 publication Critical patent/WO2003083900A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source

Definitions

  • the invention relates to a halogen headlight lamp for an automobile comprising at least a lamp bulb and an antiglare screen which is indetachably fastened to the end of the lamp bulb facing the road in the mounted position of the lamp.
  • Halogen headlight lamps for automobiles are provided with opaque screens because of legal requirements stipulating that a direct irradiation of oncoming traffic by the light issuing from the halogen headlight lamp must be prevented.
  • the relevant antiglare screen has been realized for decades by means of a usually single-layer or multiple-layer coat of paint which is provided in a dipping process on that end of the lamp bulb which faces the road, and accordingly the oncoming traffic, in the mounted position of the lamp, followed by a burning-in of the coat of paint on the lamp bulb.
  • an at least partial damage of the paint coat cannot be fully excluded. Cracks or even a partial flaking-off of portions of the paint coat can jeopardize the required permanence of an antiglare screen.
  • the present-day headlight design involves a danger, at least for certain forms of headlights, that the antiglare screen mentioned above is not sufficient on its own for fulfilling the requirements. For this reason some manufacturers use so-termed cups which are additionally placed or mounted in front of the lamp.
  • so-termed cups which are additionally placed or mounted in front of the lamp.
  • Such a solution is described, for example, in US 5,975,731, wherein the light hindering the oncoming traffic is eliminated by a reflecting component which is mechanically fastened to the headlight in front of the lamp by means of two strips.
  • a fastening by means of a strip has the disadvantage that the latter inevitably causes a partial shadow effect, the elimination of which again requires an additional expenditure.
  • the antiglare screen is formed by a cup-shaped component which has received substantially its final shape already at the moment of its fastening to the lamp bulb.
  • the cup-shaped component may thus be readily adapted with its inner contour to the shape of the lamp bulb and the relevant kind of fastening.
  • the shape and design of the outer contour of the antiglare screen may be implemented in a plurality of manners. Depending on the intended application of the lamp, for example in a certain type of vehicle from a certain automobile manufacturer, this opens up the possibility of incorporating the lamp into the overall relevant design concept of the vehicle, or at least of adapting it thereto.
  • the coloring of the antiglare screen may be harmonized with the color of the car body or the logo or symbol of the automobile manufacturer may be integrated in a high-grade manner.
  • the function of the component which primarily serves to ensure the antiglare protection may be extended in that it is used in particular as a carrier of information and data, so that it can be basically included in the vehicle management, should this be desired.
  • Partial shadow effects are avoided by the stepless nature of the fastening.
  • the solution according to the invention renders it possible in principle to achieve an improvement in the antiglare protection, given a suitable shaping of the cup-shaped component itself or a fastening of an additional cup to the cup-shaped component.
  • the solution according to the invention in addition renders it possible to manufacture the antiglare screen separately, possibly beforehand, so that it can be connected to the lamp bulb by suitable means in a technological step.
  • a plurality of possibilities is available for the concrete choice of the type of fastening, so that the simplest and least expensive fastening type may be chosen, for example taking into account all aspects of the manufacture and the relevant operational parameters.
  • the fastening between the cup-shaped component and the lamp bulb is achieved by means of a connection based on material properties, exertion of force, and/or interlocking arrangements. It is furthermore preferred, in particular for achieving a simple and inexpensive manufacture of the halogen headlight lamp, that the interconnection can be achieved by mechanical fastening means such as snap mechanisms or screw threads and/or by adhesion.
  • Known adhesives may be used as the adhesives for the manufacture of the reliable connection, which adhesives should be in particular resistant to high temperatures and attuned to the chosen material combination and to the loads exerted during lamp life.
  • a commercially available so-termed high-temperature ceramic adhesive is suitable, comprising in particular metal and/or ceramic refractive materials.
  • These adhesives which are often in the form of pastes, form high-temperature-resistant adhesive joints upon curing. Examples that may be mentioned are a high-temperature adhesive on aluminum basis with the commercial designation Polytec 950 and a high-temperature adhesive on steel basis with the commercial designation Polytec 954.
  • the latter adhesive is resistant up to approximately 870 °C.
  • Preferred materials for the cup-shaped opaque component are metal, ceramic material, high-temperature synthetic resin, and/or glass. The choice of the respective material is determined fundamentally by the envisaged manufacture, the application of the lamp, and the desired functions.
  • a particular embodiment of the invention relates to the fact that visually and/or technically readable data and/or information can be stored on and/or in the outer surface of the opaque cup-shaped component.
  • the functionality of the opaque antiglare screen is enhanced thereby, i.e. an additional user advantage is immediately obtained by this arrangement.
  • the object of the invention is additionally achieved by means of an antiglare screen of a halogen headlight lamp with a lamp bulb, wherein the opaque antiglare screen is a cup-shaped component which has received substantially its final shape at the moment of its fastening to the lamp bulb.
  • cup and "cup-shaped” within the scope of the invention relate in particular to the shape of a hollow cylinder which is closed at one end; however, similar geometric shapes are not excluded thereby.
  • Fig. 1 is a diagrammatic cross-sectional view of a halogen headlight lamp with an opaque antiglare screen
  • Fig. 2 is a diagrammatic cross-sectional view of a snap fastening between a lamp bulb of a halogen headlight lamp and an opaque antiglare screen
  • Fig. 3 is a diagrammatic cross-sectional view of a snap-adhesive fastening between a lamp bulb of a halogen headlight lamp and an opaque antiglare screen.
  • Fig. 1 is a diagrammatic cross-sectional view of a halogen headlight lamp 1 according to the invention with an opaque antiglare screen 3.
  • the antiglare screen 3 which is undetachably fastened to that end of the lamp bulb 2 which faces the road in the mounted state of the lamp, consists of a cup-shaped component. This component is a steel or aluminum stamped part which has already received substantially its final shape at the moment of its fastening to the lamp bulb 2.
  • Fig. 2 shows a portion of a cylindrical region of a lamp bulb 2 of a halogen headlight lamp for an automobile and a cylindrical portion of an opaque antiglare screen 3 in a diagrammatic cross-sectional view.
  • the region of the glass bulb shown has a lenticular projection 4 at its outer surface which snaps into a recess 5 of corresponding size and shape provided in the inner side of the antiglare screen.
  • the antiglare screen formed as a cup- shaped component is preferably of a resilient construction in the region of its recess, so that an interlocking, resilient interconnection, a so-called snap connection, is obtained.
  • FIG. 3 shows a portion of a cylindrical region of a lamp bulb 2 of a halogen headlight lamp for an automobile.
  • the region of the glass bulb shown has a recess 6 in its outer surface, into which recess a projection 7 of corresponding size and shape arranged at the inner side of the antiglare screen is snapped in.
  • the strength and reliability of the connection may be enhanced by the use of an adhesive, so that a snap-adhesive joint is obtained.
  • Several such connections may be distributed over the circumference.
  • Alternative shapes are possible in principle for the shape of the mutually mating projection 7 and recess 6.

Abstract

The invention relates to a halogen headlight lamp for an automobile comprising at least a lamp bulb (2) and an antiglare screen (3) which is indetachably fastened to the end of the lamp bulb facing the road in the mounted position of the lamp, wherein the antiglare screen (3) is formed by a cup-shaped component which has substantially received its final shape already at the moment of its fastening to the lamp bulb (2).

Description

Halogen headlight lamp for an automobile
The invention relates to a halogen headlight lamp for an automobile comprising at least a lamp bulb and an antiglare screen which is indetachably fastened to the end of the lamp bulb facing the road in the mounted position of the lamp.
Halogen headlight lamps for automobiles are provided with opaque screens because of legal requirements stipulating that a direct irradiation of oncoming traffic by the light issuing from the halogen headlight lamp must be prevented. The relevant antiglare screen has been realized for decades by means of a usually single-layer or multiple-layer coat of paint which is provided in a dipping process on that end of the lamp bulb which faces the road, and accordingly the oncoming traffic, in the mounted position of the lamp, followed by a burning-in of the coat of paint on the lamp bulb. A constant antiglare screen in the sense indicated above, which is guaranteed to be permanent throughout the life of the halogen headlight lamp, has only been possible until now with great effort and high expenditure in the case of lamps manufactured in a mass manufacturing process, in spite of major efforts by the industry, and has accordingly been in the focus of the development efforts of all relevant lamp manufacturers involved for years. Depending on the manufacturer and/or on the respective loads, for example strong impact loads or thermal loads, an at least partial damage of the paint coat cannot be fully excluded. Cracks or even a partial flaking-off of portions of the paint coat can jeopardize the required permanence of an antiglare screen.
For certain lamp types or applications, there is a demand in the automobile industry for the technical element which until now only had to realize the antiglare protection to fulfill further additional functions. Such new functions may be in the field of novel design possibilities, or may serve to provide carriers of technical and/or user-specific information.
The present-day headlight design involves a danger, at least for certain forms of headlights, that the antiglare screen mentioned above is not sufficient on its own for fulfilling the requirements. For this reason some manufacturers use so-termed cups which are additionally placed or mounted in front of the lamp. Such a solution is described, for example, in US 5,975,731, wherein the light hindering the oncoming traffic is eliminated by a reflecting component which is mechanically fastened to the headlight in front of the lamp by means of two strips. Such a fastening by means of a strip has the disadvantage that the latter inevitably causes a partial shadow effect, the elimination of which again requires an additional expenditure.
It is an object of the invention to provide a halogen headlight lamp and an antiglare screen for such a halogen headlight lamp whereby it is safeguarded that the required impermeability to light is ensured throughout the life of the halogen headlight lamp, while the latter can be manufactured in a technically simple and inexpensive manner.
The object of the invention is achieved in that the antiglare screen is formed by a cup-shaped component which has received substantially its final shape already at the moment of its fastening to the lamp bulb. The cup-shaped component may thus be readily adapted with its inner contour to the shape of the lamp bulb and the relevant kind of fastening. The shape and design of the outer contour of the antiglare screen may be implemented in a plurality of manners. Depending on the intended application of the lamp, for example in a certain type of vehicle from a certain automobile manufacturer, this opens up the possibility of incorporating the lamp into the overall relevant design concept of the vehicle, or at least of adapting it thereto. For example, the coloring of the antiglare screen may be harmonized with the color of the car body or the logo or symbol of the automobile manufacturer may be integrated in a high-grade manner.
The function of the component which primarily serves to ensure the antiglare protection may be extended in that it is used in particular as a carrier of information and data, so that it can be basically included in the vehicle management, should this be desired.
Partial shadow effects are avoided by the stepless nature of the fastening. The solution according to the invention renders it possible in principle to achieve an improvement in the antiglare protection, given a suitable shaping of the cup-shaped component itself or a fastening of an additional cup to the cup-shaped component.
The solution according to the invention in addition renders it possible to manufacture the antiglare screen separately, possibly beforehand, so that it can be connected to the lamp bulb by suitable means in a technological step. Here, too, a plurality of possibilities is available for the concrete choice of the type of fastening, so that the simplest and least expensive fastening type may be chosen, for example taking into account all aspects of the manufacture and the relevant operational parameters.
It is preferred in this connection that the fastening between the cup-shaped component and the lamp bulb is achieved by means of a connection based on material properties, exertion of force, and/or interlocking arrangements. It is furthermore preferred, in particular for achieving a simple and inexpensive manufacture of the halogen headlight lamp, that the interconnection can be achieved by mechanical fastening means such as snap mechanisms or screw threads and/or by adhesion. Known adhesives may be used as the adhesives for the manufacture of the reliable connection, which adhesives should be in particular resistant to high temperatures and attuned to the chosen material combination and to the loads exerted during lamp life. For a material combination of metal and glass, or ceramic material and glass, for example, a commercially available so-termed high-temperature ceramic adhesive is suitable, comprising in particular metal and/or ceramic refractive materials. These adhesives, which are often in the form of pastes, form high-temperature-resistant adhesive joints upon curing. Examples that may be mentioned are a high-temperature adhesive on aluminum basis with the commercial designation Polytec 950 and a high-temperature adhesive on steel basis with the commercial designation Polytec 954. The latter adhesive is resistant up to approximately 870 °C. Preferred materials for the cup-shaped opaque component are metal, ceramic material, high-temperature synthetic resin, and/or glass. The choice of the respective material is determined fundamentally by the envisaged manufacture, the application of the lamp, and the desired functions.
A particular embodiment of the invention relates to the fact that visually and/or technically readable data and/or information can be stored on and/or in the outer surface of the opaque cup-shaped component. The functionality of the opaque antiglare screen is enhanced thereby, i.e. an additional user advantage is immediately obtained by this arrangement.
The object of the invention is additionally achieved by means of an antiglare screen of a halogen headlight lamp with a lamp bulb, wherein the opaque antiglare screen is a cup-shaped component which has received substantially its final shape at the moment of its fastening to the lamp bulb.
The terms "cup" and "cup-shaped" within the scope of the invention relate in particular to the shape of a hollow cylinder which is closed at one end; however, similar geometric shapes are not excluded thereby.
The invention will be explained in more detail below with reference to an embodiment. In the drawing: Fig. 1 is a diagrammatic cross-sectional view of a halogen headlight lamp with an opaque antiglare screen,
Fig. 2 is a diagrammatic cross-sectional view of a snap fastening between a lamp bulb of a halogen headlight lamp and an opaque antiglare screen, and Fig. 3 is a diagrammatic cross-sectional view of a snap-adhesive fastening between a lamp bulb of a halogen headlight lamp and an opaque antiglare screen.
Fig. 1 is a diagrammatic cross-sectional view of a halogen headlight lamp 1 according to the invention with an opaque antiglare screen 3. The antiglare screen 3, which is undetachably fastened to that end of the lamp bulb 2 which faces the road in the mounted state of the lamp, consists of a cup-shaped component. This component is a steel or aluminum stamped part which has already received substantially its final shape at the moment of its fastening to the lamp bulb 2. Fig. 2 shows a portion of a cylindrical region of a lamp bulb 2 of a halogen headlight lamp for an automobile and a cylindrical portion of an opaque antiglare screen 3 in a diagrammatic cross-sectional view. The region of the glass bulb shown has a lenticular projection 4 at its outer surface which snaps into a recess 5 of corresponding size and shape provided in the inner side of the antiglare screen. The antiglare screen formed as a cup- shaped component is preferably of a resilient construction in the region of its recess, so that an interlocking, resilient interconnection, a so-called snap connection, is obtained. There is some clearance between the cylindrical inner side of the antiglare screen and the outer surface of the lamp bulb 2. This clearance renders it possible inter alia to mount the antiglare screen 3 to the end of the lamp bulb 2 facing the road in a simple and reliable manner. Fig. 3 shows a portion of a cylindrical region of a lamp bulb 2 of a halogen headlight lamp for an automobile. The region of the glass bulb shown has a recess 6 in its outer surface, into which recess a projection 7 of corresponding size and shape arranged at the inner side of the antiglare screen is snapped in. In addition to this so-called snap connection between the recess 6 and the projection 7, the strength and reliability of the connection may be enhanced by the use of an adhesive, so that a snap-adhesive joint is obtained. Several such connections may be distributed over the circumference. Alternative shapes are possible in principle for the shape of the mutually mating projection 7 and recess 6.

Claims

1. A halogen headlight lamp for an automobile comprising at least a lamp bulb (2) and an antiglare screen (3) which is indetachably fastened to the end of the lamp bulb facing the road in the mounted position of the lamp, characterized in that the opaque antiglare screen (3) is formed by a cup-shaped component which has received substantially its final shape already at the moment of its fastening to the lamp bulb (2).
2. A halogen headlight lamp as claimed in claim 1 , characterized in that the fastening between the cup-shaped component and the lamp bulb (2) is achieved by means of a connection based on material properties, exertion of force, and/or interlocking arrangements.
3. A halogen headlight lamp as claimed in claim 2, characterized in that the interconnection is achieved by mechanical fastening means such as snap mechanisms or screw threads, and/or by adhesion.
4. A halogen headlight lamp as claimed in claim 1 , characterized in that the cup- shaped component consists of metal, ceramic material, synthetic resin resistant to high temperatures, and/or glass.
5. A halogen headlight lamp as claimed in claim 1, characterized in that visually and/or technically readable data and/or information can be stored on and/or in the outer surface of the opaque cup-shaped component.
6. An antiglare screen for a halogen headlight lamp comprising a lamp bulb, characterized in that the opaque antiglare screen (3) is a cup-shaped component which has received substantially its final shape at the moment of its fastening to the lamp bulb (2).
7. A lighting unit comprising a halogen headlight lamp for an automobile as claimed in one of the preceding claims 1 to 5.
PCT/IB2003/001123 2002-03-28 2003-03-24 Halogen headlight lamp for an automobile WO2003083900A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003209951A AU2003209951A1 (en) 2002-03-28 2003-03-24 Halogen headlight lamp for an automobile
EP03745360A EP1540704A1 (en) 2002-03-28 2003-03-24 Halogen headlight lamp for an automobile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10213911A DE10213911A1 (en) 2002-03-28 2002-03-28 Halogen headlight lamp for an automobile
DE10213911.3 2002-03-28

Publications (1)

Publication Number Publication Date
WO2003083900A1 true WO2003083900A1 (en) 2003-10-09

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ID=28458426

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/001123 WO2003083900A1 (en) 2002-03-28 2003-03-24 Halogen headlight lamp for an automobile

Country Status (5)

Country Link
EP (1) EP1540704A1 (en)
AU (1) AU2003209951A1 (en)
DE (1) DE10213911A1 (en)
TW (1) TW200306398A (en)
WO (1) WO2003083900A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006034500A1 (en) * 2004-09-23 2006-03-30 Luxim Corporation Plasma lamp systems and methods
WO2006081804A1 (en) * 2005-02-04 2006-08-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Light unit provided with reflector
US7919923B2 (en) 2000-07-31 2011-04-05 Luxim Corporation Plasma lamp with dielectric waveguide
US8125153B2 (en) 2000-07-31 2012-02-28 Luxim Corporation Microwave energized plasma lamp with dielectric waveguide
US8602616B2 (en) 2008-11-14 2013-12-10 Koninklijke Philips N.V. Lamp for a headlight of a motor vehicle
ES2600168A1 (en) * 2015-08-06 2017-02-07 Regner & Asociados Sl Anti-glare lighting system without reflector for vehicles that have to travel on public roads (Machine-translation by Google Translate, not legally binding)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011000217A1 (en) * 2011-01-19 2012-07-19 Hella Kgaa Hueck & Co. Lighting device for headlight for vehicle, has lighting component that is bonded to fastening region at opening edge of pot-shaped housing by using lock

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757105A (en) * 1971-10-04 1973-09-04 Jack N Mccarthy Electric light device
FR2416550A1 (en) * 1978-02-03 1979-08-31 Fnac LIGHTING BULB COVER
FR2549577A1 (en) * 1983-07-18 1985-01-25 Rossi Dante Anti-dazzle dipped beam
US5180224A (en) * 1992-02-27 1993-01-19 Svehaug Oswald C Tail light cover
DE29809764U1 (en) * 1997-12-24 1999-04-29 Jungsberger Nicola Elisabeth D Dimmer hood for attenuating the light emitted by a lighting fixture to illuminate indoor and outdoor facilities
US5975731A (en) 1996-07-11 1999-11-02 Valeo Vision Vehicle headlight with reflective mask
US20010004319A1 (en) * 1999-12-14 2001-06-21 Koito Manufacturing Co., Ltd. Bulb applied with a glare protection paint and a vehicular lighting fixture equipped therewith

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757105A (en) * 1971-10-04 1973-09-04 Jack N Mccarthy Electric light device
FR2416550A1 (en) * 1978-02-03 1979-08-31 Fnac LIGHTING BULB COVER
FR2549577A1 (en) * 1983-07-18 1985-01-25 Rossi Dante Anti-dazzle dipped beam
US5180224A (en) * 1992-02-27 1993-01-19 Svehaug Oswald C Tail light cover
US5975731A (en) 1996-07-11 1999-11-02 Valeo Vision Vehicle headlight with reflective mask
DE29809764U1 (en) * 1997-12-24 1999-04-29 Jungsberger Nicola Elisabeth D Dimmer hood for attenuating the light emitted by a lighting fixture to illuminate indoor and outdoor facilities
US20010004319A1 (en) * 1999-12-14 2001-06-21 Koito Manufacturing Co., Ltd. Bulb applied with a glare protection paint and a vehicular lighting fixture equipped therewith

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7919923B2 (en) 2000-07-31 2011-04-05 Luxim Corporation Plasma lamp with dielectric waveguide
US7940007B2 (en) 2000-07-31 2011-05-10 Luxim Corporation Plasma lamp with dielectric waveguide integrated with transparent bulb
US8110988B2 (en) 2000-07-31 2012-02-07 Luxim Corporation Plasma lamp with dielectric waveguide
US8125153B2 (en) 2000-07-31 2012-02-28 Luxim Corporation Microwave energized plasma lamp with dielectric waveguide
US8203272B2 (en) 2000-07-31 2012-06-19 Luxim Corporation Plasma lamp with dielectric waveguide integrated with transparent bulb
WO2006034500A1 (en) * 2004-09-23 2006-03-30 Luxim Corporation Plasma lamp systems and methods
WO2006081804A1 (en) * 2005-02-04 2006-08-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Light unit provided with reflector
US7876032B2 (en) 2005-02-04 2011-01-25 Osram Gesellschaft Mit Beschraenkter Haftung Light unit provided with reflector
US8602616B2 (en) 2008-11-14 2013-12-10 Koninklijke Philips N.V. Lamp for a headlight of a motor vehicle
ES2600168A1 (en) * 2015-08-06 2017-02-07 Regner & Asociados Sl Anti-glare lighting system without reflector for vehicles that have to travel on public roads (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
EP1540704A1 (en) 2005-06-15
TW200306398A (en) 2003-11-16
AU2003209951A1 (en) 2003-10-13
DE10213911A1 (en) 2003-10-23

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