EP0108915A1 - Abgeblendeter Scheinwerfer für Kraftfahrzeuge - Google Patents

Abgeblendeter Scheinwerfer für Kraftfahrzeuge Download PDF

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Publication number
EP0108915A1
EP0108915A1 EP83109995A EP83109995A EP0108915A1 EP 0108915 A1 EP0108915 A1 EP 0108915A1 EP 83109995 A EP83109995 A EP 83109995A EP 83109995 A EP83109995 A EP 83109995A EP 0108915 A1 EP0108915 A1 EP 0108915A1
Authority
EP
European Patent Office
Prior art keywords
lens
diaphragm
focal point
reflector
edges
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Withdrawn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
EP83109995A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wilhelm Röhling
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.)
Westfaelische Metall Industrie KG Hueck and Co
Original Assignee
Westfaelische Metall Industrie KG Hueck and Co
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 Westfaelische Metall Industrie KG Hueck and Co filed Critical Westfaelische Metall Industrie KG Hueck and Co
Publication of EP0108915A1 publication Critical patent/EP0108915A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof

Definitions

  • the invention relates to a dimmed headlight for motor vehicles with an ellipsoidal reflector that bundles the light into a focal spot, a light source arranged in the inner focal point of the reflector, a projection lens arranged with its focal point in the outer focal point of the reflector, and a diaphragm arranged in the focal spot, the two of which are located as a horizontally extending light-dark boundary that lies at the height of the optical axis of the reflector.
  • An incandescent lamp with an incandescent filament is used as the light source. Due to the size of the filament (no point light source), the light in the outer focal point of the reflector is not collected to a focal point but to a focal spot.
  • the diaphragm edge which runs essentially horizontally and is to be imaged as a light-dark boundary, has a step or a kink that is also to be imaged
  • the collection of the light by the reflector to a focal spot and not to a focal point is advantageous.
  • the reflector produces a light spot in its outer focal point, which reflects a longer section of the substantially horizontal diaphragm edge as a light-dark boundary.
  • This light spot is advantageously designed in that the reflector is made wider in the horizontal section than in the vertical section. As a result, the focal spot is stretched in the horizontal direction, whereby a longer aperture edge section can be imaged.
  • the object of the invention is to shield the spectral rays going up beyond the light-dark boundary.
  • This object is achieved in that the diaphragm has two - viewed in the light exit direction - mutually spaced edges and the distance of the diaphragm edges is equal or slightly larger than the distance of the focal points from the outermost blue and the outermost red spectral rays, which is the Aperture edge facing away from the lens is arranged in or - seen in the light exit direction - slightly in front of the lens focal point of the red spectral beam and the other diaphragm edge is arranged in or slightly behind the lens focal point of the blue spectral beam.
  • Such an aperture only lets light fall on the upper half of the projection lens, the red spectral colors of which emerge parallel or converging to the horizontal plane and such light falls on the lower half of the projection lens, whose blue spectral colors emerge parallel or diverging to the horizontal plane.
  • the diaphragm is made in one piece and has a fillet between the two imaging edges.
  • This embodiment has the advantage that the distance between the diaphragm edges is fixed and can only be changed by force.
  • the fillet prevents reflections from occurring on a surface lying between the two edges of the diaphragm.
  • the screen consists of two individual lamellae arranged one behind the other.
  • Such an embodiment has the advantage that by arranging spacers of different thicknesses between the slats, an aperture for different versions of the Projection lenses can be created. It has proven to be advantageous to arrange the diaphragm edges at a distance of approximately 2.5 mm for a glass lens with a focal length of 35 mm.
  • the two diaphragm edges arranged at a distance from one another run in an arc shape with an arc that is open to the light source.
  • the helical light source 3 which runs horizontally and transversely to the optical axis 1 of the reflector 2, is arranged in the inner reflector focal point 4.
  • the rays 5, 6 emerging from the direction of the reflector focal point 4 from the incandescent filament 3 meet in the outer reflector focal point 7 and are directed by the projection lens 8 in such a way that they emerge from the lens parallel to the central axis 1.
  • the light beam is split into its spectral beams.
  • Three of these spectral beams are shown in FIG. 1, namely the red spectral beam 9, the blue spectral beam 11 and the one approximately in the center the green spectral beam 10 running therebetween.
  • the green spectral beam 10 would emerge from the lens approximately parallel to the optical axis 1, while the red spectral beams 9 emerge diverging and the blue spectral beams 11 converging to the central axis 1.
  • the red spectral rays 9 generated by the upper lens half and the blue spectral rays 11 generated by the lower lens half emerge from the headlamp with respect to the road and are visible above the light-dark boundary.
  • the beam 12 generated by such spiral parts, which lie between the inner focal point 4 and the apex 13 of the reflector 2 is not shielded by the diaphragm 14. These rays 12 are so diverging from the optical axis 1 that the blue spectral colors emerge inclined to the road.
  • the beam 16 is shielded from the diaphragm 14, while the beam 15 strikes the lens 8 at such an angle that even the red spectral beam emerges in a manner converging with the optical axis 1.
  • FIG. 2 shows a headlight which differs from the headlight in FIG. 1 only by the aperture 17.
  • the diaphragm 17 has two diaphragm edges 18 and 19 lying one behind the other in the direction of the optical axis.
  • the diaphragm edges are arranged opposite the outer reflector focal point 7 in such a way that all the rays from the lower reflector half whose red spectral beam 9 and all the rays from the upper reflector half whose blue spectral beam 11 emerge from the lens 8 rising relative to the horizontal plane are shielded.
  • FIG. 4 gives an explanation of the exact location of the two diaphragm edges 18, 19.
  • a beam incident on the lens 8 from the outside parallel to the optical axis 1 is broken down into the spectral beams 9, 10 and 11.
  • the point at which the red spectral beam 9 intersects with the optical axis is the lens focal point of the red one Spectral beam, and the point at which the blue spectral beam 11 intersects with the optical axis 1 is the lens focal point of the blue spectral beam.
  • the diaphragm 17 with its diaphragm edges 18, 19 is arranged to run.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP83109995A 1982-11-11 1983-10-06 Abgeblendeter Scheinwerfer für Kraftfahrzeuge Withdrawn EP0108915A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823241713 DE3241713A1 (de) 1982-11-11 1982-11-11 Abgeblendeter scheinwerfer fuer kraftfahrzeuge
DE3241713 1982-11-11

Publications (1)

Publication Number Publication Date
EP0108915A1 true EP0108915A1 (de) 1984-05-23

Family

ID=6177860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109995A Withdrawn EP0108915A1 (de) 1982-11-11 1983-10-06 Abgeblendeter Scheinwerfer für Kraftfahrzeuge

Country Status (6)

Country Link
EP (1) EP0108915A1 (ja)
JP (1) JPS5999601A (ja)
AU (1) AU2070083A (ja)
DD (1) DD213981A5 (ja)
DE (1) DE3241713A1 (ja)
ES (1) ES284463Y (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2754039A1 (fr) * 1996-10-02 1998-04-03 Valeo Vision Projecteur du genre elliptique pour vehicule automobile, comportant un cache de coupure perfectionne, et procede de fabrication du cache
EP1584862A1 (fr) * 2004-04-09 2005-10-12 Valeo Vision Projecteur lumineux pour véhicule automobile avec faisceau à coupure, et ensemble de cache pour un tel projecteur
EP1170547B2 (fr) † 2000-07-07 2011-12-14 Valeo Vision Projecteur du genre elliptique notamment pour éclairage de route à photométrie basse améliorée
AT516836B1 (de) * 2015-04-10 2016-09-15 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung mit Strahlenblende sowie Kraftfahrzeugscheinwerfer
EP2244007B1 (fr) 2009-04-24 2017-03-15 Valeo Vision Dispositif optique pour véhicule automobile
WO2018069235A1 (de) * 2016-10-14 2018-04-19 Covestro Deutschland Ag Vorrichtung zur reduzierung des farbsaums
CN108139061A (zh) * 2015-10-23 2018-06-08 Zkw集团有限责任公司 用于机动车大灯的用于产生无成像误差的光分布的微型投影光模块
DE102005005562B4 (de) * 2004-03-02 2021-04-01 Zkw Group Gmbh Fahrzeugscheinwerfer für Kurvenlicht

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566878B1 (fr) * 1984-06-27 1986-07-18 Cibie Projecteurs Perfectionnements aux projecteurs automobiles emettant un faisceau coupe, notamment un faisceau de croisement
DE3516813A1 (de) * 1985-05-10 1986-11-13 Hella KG Hueck & Co, 4780 Lippstadt Abgeblendeter fahrzeugscheinwerfer
DE3516812A1 (de) * 1985-05-10 1986-11-13 Hella KG Hueck & Co, 4780 Lippstadt Abgeblendeter fahrzeugscheinwerfer
DE3525041C2 (de) * 1985-07-13 1994-06-16 Bosch Gmbh Robert Abblendlicht-oder Nebellichtscheinwerfer für Kraftfahrzeuge
JPH046081Y2 (ja) * 1986-02-21 1992-02-20
JP2691712B2 (ja) * 1987-06-17 1997-12-17 日産自動車 株式会社 プロジェクタ型の自動車用前照灯
JPH02103801A (ja) * 1988-10-12 1990-04-16 Stanley Electric Co Ltd プロジエクタ型前照灯
DE4102586C2 (de) * 1990-01-31 2000-07-06 Honda Motor Co Ltd Scheinwerfer
DE4141717A1 (de) * 1991-12-18 1993-07-01 Bayerische Motoren Werke Ag Scheinwerfer fuer kraftfahrzeuge
DE102005021695B4 (de) * 2005-05-11 2014-10-09 Hella Kgaa Hueck & Co. Projektionsscheinwerfer für Fahrzeuge
DE102013106569B4 (de) * 2013-06-24 2024-03-28 HELLA GmbH & Co. KGaA Scheinwerfer für Fahrzeuge mit einer drehbaren Blendenwelle, die Korrekturkanten zum Ausgleich von Abbildungsfehlern einer Linse aufweist

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR45488E (fr) * 1934-11-28 1935-09-12 Système de phare non éblouissant pour automobiles et autres applications
US3737653A (en) * 1972-02-14 1973-06-05 Sylvania Electric Prod Automotive headlight
DE2636137A1 (de) * 1976-08-11 1978-02-16 Thorn Electrical Ind Ltd Gluehlampe mit optischem system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR45488E (fr) * 1934-11-28 1935-09-12 Système de phare non éblouissant pour automobiles et autres applications
US3737653A (en) * 1972-02-14 1973-06-05 Sylvania Electric Prod Automotive headlight
DE2636137A1 (de) * 1976-08-11 1978-02-16 Thorn Electrical Ind Ltd Gluehlampe mit optischem system

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2754039A1 (fr) * 1996-10-02 1998-04-03 Valeo Vision Projecteur du genre elliptique pour vehicule automobile, comportant un cache de coupure perfectionne, et procede de fabrication du cache
EP1170547B2 (fr) † 2000-07-07 2011-12-14 Valeo Vision Projecteur du genre elliptique notamment pour éclairage de route à photométrie basse améliorée
DE102005005562B4 (de) * 2004-03-02 2021-04-01 Zkw Group Gmbh Fahrzeugscheinwerfer für Kurvenlicht
EP1584862A1 (fr) * 2004-04-09 2005-10-12 Valeo Vision Projecteur lumineux pour véhicule automobile avec faisceau à coupure, et ensemble de cache pour un tel projecteur
FR2868828A1 (fr) * 2004-04-09 2005-10-14 Valeo Vision Sa Projecteur lumineux pour vehicule automobile avec faisceau a coupure, et ensemble de cache pour un tel projecteur
US7347602B2 (en) 2004-04-09 2008-03-25 Valeo Vision Headlight for a motor vehicle with a cut-off beam, and a shield assembly for such a headlight
CN100559068C (zh) * 2004-04-09 2009-11-11 瓦雷欧·维申公司 用于机动车的头灯以及这种头灯的防护罩组件
EP2244007B1 (fr) 2009-04-24 2017-03-15 Valeo Vision Dispositif optique pour véhicule automobile
AT516836A4 (de) * 2015-04-10 2016-09-15 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung mit Strahlenblende sowie Kraftfahrzeugscheinwerfer
AT516836B1 (de) * 2015-04-10 2016-09-15 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung mit Strahlenblende sowie Kraftfahrzeugscheinwerfer
CN108139061A (zh) * 2015-10-23 2018-06-08 Zkw集团有限责任公司 用于机动车大灯的用于产生无成像误差的光分布的微型投影光模块
CN108139061B (zh) * 2015-10-23 2020-07-10 Zkw集团有限责任公司 用于机动车大灯的用于产生无成像误差的光分布的微型投影光模块
WO2018069235A1 (de) * 2016-10-14 2018-04-19 Covestro Deutschland Ag Vorrichtung zur reduzierung des farbsaums
CN109996990A (zh) * 2016-10-14 2019-07-09 科思创德国股份有限公司 用于减少彩色边纹的装置
US10619815B2 (en) 2016-10-14 2020-04-14 Covestro Deutschland Ag Device for reducing color fringing
CN109996990B (zh) * 2016-10-14 2021-12-28 科思创德国股份有限公司 用于减少彩色边纹的装置

Also Published As

Publication number Publication date
ES284463Y (es) 1986-01-16
AU2070083A (en) 1984-05-17
DD213981A5 (de) 1984-09-26
JPS5999601A (ja) 1984-06-08
DE3241713A1 (de) 1984-05-17
ES284463U (es) 1985-06-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19850124

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Inventor name: ROEHLING, WILHELM