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EP0094519A2 - Projecteur non-éblouissant pour véhicule - Google Patents

Projecteur non-éblouissant pour véhicule Download PDF

Info

Publication number
EP0094519A2
EP0094519A2 EP83103844A EP83103844A EP0094519A2 EP 0094519 A2 EP0094519 A2 EP 0094519A2 EP 83103844 A EP83103844 A EP 83103844A EP 83103844 A EP83103844 A EP 83103844A EP 0094519 A2 EP0094519 A2 EP 0094519A2
Authority
EP
European Patent Office
Prior art keywords
lens
reflector
prismatic
focal point
axial longitudinal
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.)
Granted
Application number
EP83103844A
Other languages
German (de)
English (en)
Other versions
EP0094519B1 (fr
EP0094519A3 (en
Inventor
Hans-Otto Dr. Ernst
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co, Westfaelische Metall Industrie KG Hueck and Co filed Critical Hella KGaA Huek and Co
Publication of EP0094519A2 publication Critical patent/EP0094519A2/fr
Publication of EP0094519A3 publication Critical patent/EP0094519A3/de
Application granted granted Critical
Publication of EP0094519B1 publication Critical patent/EP0094519B1/fr
Expired 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass

Definitions

  • DE-OS 24 46 521 describes a dimmed vehicle headlight in which a reflector is used which in the axial longitudinal sections forms a section of ellipses which are congruent at an apex and the associated focal point and whose eccentricity is different from the vertical axial Longitudinal section increases to the horizontal axial longitudinal section.
  • a screen is arranged which creates the light-dark boundary with its upper edge.
  • a convex converging lens is arranged, which lies with its focal plane in the focal point of the ellipse resulting in the vertical axial section of the reflector.
  • a reflector section T is arranged to the side and above the reflector axis, which T for greater illumination of the Side areas.
  • a disadvantage of This headlamp design is that the side reflector sections arranged between the screen and the convex lens can only be attached accurately and functionally reliably in relation to the main reflector with great effort.
  • the distance between the converging lens and the screen is in practice predetermined by the difference in eccentricity between the elliptical sections resulting in the horizontal and vertical longitudinal sections of the main reflector. In practice, this distance is too small to obtain a sufficiently large reflection surface.
  • the object of the invention is to improve the light distribution of the known headlights described above so that an increased illumination of the road edges and the areas immediately in front of the vehicle is achieved.
  • the headlamp should be structurally improved in such a way that the components causing the lateral road illumination can be manufactured and assembled more easily and with a greater tolerance.
  • the invention therefore relates to a headlamp with a cup-shaped reflector, the inner reflection surface in the axial longitudinal sections each forming a section of ellipses, of which an apex and the associated focal point are congruent and whose eccentricity from the vertical axial longitudinal section to the horizontal axial longitudinal section increases and with a screen arranged in the vertical plane of the second focal point of the ellipse resulting in the vertical axial longitudinal section of the reflector and producing the light-dark boundary and a convex converging lens arranged in the second focal point of the ellipse resulting in the horizontal axial longitudinal section of the reflector, the Base area is rectangular.
  • the object is achieved in that the base of the lens is an upright rectangle, the sides of which in a ratio? 1.2: 1 stand and that a prismatic lens is arranged to the side of the lens, which is directly from the glow lamp collects emerging light in the vertical direction and directs it overall downwards and deflects it in the horizontal direction towards the lens axis.
  • the prismatic lens can be made wider, so that direct light strikes it from a larger solid angle.
  • the arrangement of the prismatic lens next to the convex lens has the further advantage over the prior art that the illuminated optical lens, which in addition to directing light also has the function of a signal surface, is enlarged.
  • headlamps not only have the task of illuminating the field in front of the vehicle so that the driver can see well, they also have the function of a signal lamp that signals oncoming traffic that a vehicle is approaching.
  • the converging lens as a plano-convex converging lens and to arrange it with its flat surface at least approximately in the outer focal point of the ellipse section resulting in the horizontal axial section of the reflection surface of the reflector.
  • the lens can thus be made particularly narrow and the diaphragm edge is imaged in the central region of the lens, as a result of which a sharper image is achieved.
  • the prismatic lens is advantageously made of plastic because of the simpler and more precise manufacture. It is also advantageous to arrange a prismatic lens on both sides of the convex lens so that the light distribution in front of the vehicle is symmetrical as far as necessary and advantageously. So that the light from the incandescent lamp strikes the two prismatic disks on the side of the lens as perpendicular as possible, they are at an obtuse angle to each other. Furthermore is it is advantageous to design the two prismatic discs in one piece and to glue the lens into a central opening of the prismatic disc.
  • FIG. 1 shows the reflector 1 forming a semi-ellipse with the semi-axes a and b and with the inner focal point F and the outer focal point F1.
  • a screen 2 is arranged in the vertical plane of the focal point F1, the upper, substantially horizontal edge of which creates the cut-off line.
  • FIG. 2 shows the horizontal section of the reflector 1 with the semiaxes a1 and b1 and the focal point F.
  • the semiaxes a1 and b1 are larger than the semiaxes a and b in vertical section.
  • the cuts between the horizontal and vertical cuts of the reflector also have semi-ellipses that continuously merge. All ellipses have a congruent focal point F and a congruent vertex S.
  • the convex converging lens 3 is arranged in the outer second focal point F2 of the ellipse of the reflector 1 which results in the horizontal axial longitudinal section. The focal length of this converging lens 3 corresponds to the distance between F1 and F2.
  • the convex converging lens 3 is rectangular in the base 4 such that it forms an upright rectangle, the sides of which in a ratio of -> 1.2: 1 stand.
  • Wing-like prismatic disks 7 and 8 are arranged on the side surfaces 5 and 6 of the lens, which deflect the light emerging directly from the incandescent lamp arranged in the focal point F.
  • the light beams 9 are bundled approximately parallel to one another by prisms 10 and the entire light bundle is inclined toward the roadway.
  • the beams 11 are deflected towards the central axis X of the headlight, which is also the central axis of the reflector 1, by prisms 12. However, the rays 11 still diverge after the deflection, so that a larger side scatter is achieved.
  • the wing-shaped prismatic discs 7 and 8 are made in one piece.
  • the lens 3 is inserted into a central opening of the one-piece prismatic lens.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP83103844A 1982-05-18 1983-04-20 Projecteur non-éblouissant pour véhicule Expired EP0094519B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3218703 1982-05-18
DE19823218703 DE3218703A1 (de) 1982-05-18 1982-05-18 Abgeblendeter fahrzeugscheinwerfer

Publications (3)

Publication Number Publication Date
EP0094519A2 true EP0094519A2 (fr) 1983-11-23
EP0094519A3 EP0094519A3 (en) 1984-11-28
EP0094519B1 EP0094519B1 (fr) 1986-10-15

Family

ID=6163938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103844A Expired EP0094519B1 (fr) 1982-05-18 1983-04-20 Projecteur non-éblouissant pour véhicule

Country Status (6)

Country Link
EP (1) EP0094519B1 (fr)
JP (1) JPS58209802A (fr)
AU (1) AU1448783A (fr)
DD (1) DD209890A5 (fr)
DE (1) DE3218703A1 (fr)
ES (1) ES279983Y (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3729515A1 (de) * 1986-09-03 1988-03-10 Koito Mfg Co Ltd Einfadenlampen-scheinwerfereinheit fuer fern- und abblendlicht
EP0208895A3 (en) * 1985-07-13 1989-03-22 Robert Bosch Gmbh Dipped beam head light or fog light for motor vehicles
EP0212211A3 (en) * 1985-08-17 1990-01-10 Hella Kg Hueck & Co. Dipped-beam headlamp with an elliptical reflector
EP0433840A1 (fr) * 1989-12-21 1991-06-26 Bayerische Motoren Werke Aktiengesellschaft Projecteur de véhicule automobile
EP0581048A1 (fr) * 1992-07-28 1994-02-02 Bayerische Motoren Werke Aktiengesellschaft Projecteur de véhicule automobile
WO2009137960A1 (fr) * 2008-05-13 2009-11-19 Guo Tinglin Phare de véhicule
FR3008772A1 (fr) * 2013-07-19 2015-01-23 Koito Mfg Co Ltd Lampe pour vehicule

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3718642C1 (de) * 1987-06-04 1988-10-20 Friemann & Wolf Gmbh Abgeblendeter Fahrzeugscheinwerfer fuer Grubenfahrzeuge
US6220736B1 (en) 1997-07-10 2001-04-24 Robert Bosch Gmbh Headlight for a vehicle
DE19740315C1 (de) 1997-09-13 1999-02-18 Bosch Gmbh Robert Kraftfahrzeugscheinwerfer mit einer Linsenanordnung
FR2770618B1 (fr) * 1997-11-04 2000-02-04 Valeo Vision Projecteur du genre elliptique a plage eclairante agrandie
DE19813597A1 (de) * 1998-03-27 1999-09-30 Volkswagen Ag Beleuchtungseinrichtung. insbesondere Scheinwerfer nach dem Projektionsprinzip für Kraftfahrzeuge
DE19814479B4 (de) * 1998-04-01 2008-04-30 Automotive Lighting Reutlingen Gmbh Fahrzeugscheinwerfer nach dem Projektionsprinzip
DE19814480B4 (de) 1998-04-01 2006-07-20 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip
DE19841557B4 (de) * 1998-09-11 2008-01-10 Automotive Lighting Reutlingen Gmbh Fahrzeugscheinwerfer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1353573A (en) * 1919-06-17 1920-09-21 Esmarian Garabed Demountable rim
US1393573A (en) * 1920-10-21 1921-10-11 John A Ritter Headlamp
GB320693A (en) * 1929-04-08 1929-10-24 Sidney Philip Holloway An improvement in glare free headlamps for motor cars, lorries and similar vehicles
DE6913127U (de) * 1968-04-15 1969-08-07 Sylvania Electric Prod Kraftfahrzeugscheinwerfer
GB1463313A (en) * 1973-05-25 1977-02-02 Lucas Electrical Ltd Vehicle lamp assembly
GB1476297A (en) * 1973-09-29 1977-06-10 Lucas Electrical Ltd Motor vehicle lamp assemblies

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208895A3 (en) * 1985-07-13 1989-03-22 Robert Bosch Gmbh Dipped beam head light or fog light for motor vehicles
EP0212211A3 (en) * 1985-08-17 1990-01-10 Hella Kg Hueck & Co. Dipped-beam headlamp with an elliptical reflector
DE3729515A1 (de) * 1986-09-03 1988-03-10 Koito Mfg Co Ltd Einfadenlampen-scheinwerfereinheit fuer fern- und abblendlicht
EP0433840A1 (fr) * 1989-12-21 1991-06-26 Bayerische Motoren Werke Aktiengesellschaft Projecteur de véhicule automobile
EP0581048A1 (fr) * 1992-07-28 1994-02-02 Bayerische Motoren Werke Aktiengesellschaft Projecteur de véhicule automobile
WO2009137960A1 (fr) * 2008-05-13 2009-11-19 Guo Tinglin Phare de véhicule
FR3008772A1 (fr) * 2013-07-19 2015-01-23 Koito Mfg Co Ltd Lampe pour vehicule
US9772082B2 (en) 2013-07-19 2017-09-26 Koito Manufacturing Co., Ltd. Vehicular lamp

Also Published As

Publication number Publication date
JPS58209802A (ja) 1983-12-06
EP0094519B1 (fr) 1986-10-15
DE3218703A1 (de) 1983-11-24
EP0094519A3 (en) 1984-11-28
AU1448783A (en) 1983-11-24
DD209890A5 (de) 1984-05-23
ES279983U (es) 1984-12-16
ES279983Y (es) 1985-06-16

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