EP0331928A2 - Réflecteur de phare de croisement pour véhicules automobiles - Google Patents

Réflecteur de phare de croisement pour véhicules automobiles Download PDF

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Publication number
EP0331928A2
EP0331928A2 EP89102305A EP89102305A EP0331928A2 EP 0331928 A2 EP0331928 A2 EP 0331928A2 EP 89102305 A EP89102305 A EP 89102305A EP 89102305 A EP89102305 A EP 89102305A EP 0331928 A2 EP0331928 A2 EP 0331928A2
Authority
EP
European Patent Office
Prior art keywords
point
reflection surface
region
reflector
legislator
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Withdrawn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
EP89102305A
Other languages
German (de)
English (en)
Other versions
EP0331928A3 (fr
Inventor
Wolfgang Dr. Bunse
Heinz Droste
Hans-Otto Dr. Ernst
Franz-Josef Kalze
Wolfgang Peitz
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
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 filed Critical Hella KGaA Huek and Co
Publication of EP0331928A2 publication Critical patent/EP0331928A2/fr
Publication of EP0331928A3 publication Critical patent/EP0331928A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas

Definitions

  • the invention relates to a reflector for dimmed or dimmable motor vehicle headlights, the reflection surface has an asymmetrical gusset area, an upper area and a lower area and the reflection surface is designed such that the desired light distribution is produced without a corrective lens.
  • Such a reflector is previously known from DE-AS 22 05 610.
  • the reflection surface of the reflector described there for dimmable or dimmed headlights has an asymmetrical gusset region, an upper region and a lower region.
  • a horizontal section through the reflector running through the central axis results in a hyperbola.
  • a vertical section through the reflector running through the central axis results in parabolic branches.
  • the reflection surface should be designed so that the desired light distribution is produced without a correcting lens.
  • the known design of the reflector however, only preforms the light beam, so that an optically effective and correcting lens or diffuser is still required to finally produce the desired light distribution.
  • Such lenses are complex and expensive. The use of such light panes frequently encounters difficulties in motor vehicles in which the lens is strongly inclined with respect to the vertical and strongly swept with respect to the direction of travel.
  • DE-OS 26 44 385 describes a dimmable headlamp, in which the desired light distribution essentially through the reflector, ie without corrective Lens that can be manufactured.
  • the reflecting surface of the reflector is however determined by a differential equation, the solutions of which are paraboloid sections.
  • the possibility of assembling a reflector with paraboloid sections, the light distribution of which corresponds to the desired light distribution, is restricted. So z. B. the displacement of individual spiral images compared to the other spiral images only possible in one direction perpendicular to the horizontal through the intersection.
  • the invention has for its object to provide a reflector whose light distribution in the horizontal and vertical region perpendicular to the central axis of the headlamp can be adapted as completely as possible to a desired light distribution, so that an optically effective lens is completely unnecessary.
  • the reflective surface in the asymmetrical gusset area Due to the inventive design of the reflective surface in the asymmetrical gusset area, the most complete possible illumination, in particular of the right-hand side of the road edge, is achieved without dazzling oncoming traffic.
  • the invention has the advantage over the prior art in particular that by completely dispensing with mathematical control areas such as paraboloids or hyperboloids for the design of the reflecting surface in the gusset area, the light distribution can be adapted almost arbitrarily to the desired light distribution, so that an optically effective lens is completely unnecessary .
  • the inclination and the sweeping of the lens of headlights equipped with such reflectors according to the invention have considerably more limits than the previously known ones.
  • a plane-parallel glass plate can be used as the lens, which, unlike in the prior art, does not have to have any optically effective means, so that such a headlight can be made simpler and less expensive than the prior art.
  • the specified point or the specified route or the specified zone is stored in the immediate vicinity of the point R 75 specified by the legislator.
  • the point R 75 is located 75 m from the reflector of the motor vehicle on the right edge of the road. This measure enables particularly intensive and uniform illumination of the area around point R 75.
  • the surface course of the reflection surface in the transition region of the upper region and the lower region is designed in such a way that each spiral image reflected at any point on the reflection surface overlaps as far as possible with the other spiral images and is stored in the immediate vicinity of the limit line prescribed by law .
  • each spiral image reflected at any point on the reflection surface overlaps as little as possible with the other spiral images and in immediate vicinity of the z.
  • B. is stored by the legislator predetermined limit line. This measure effectively prevents the left horizontal part from bending, the boundary line generated by the reflector together with the cover lens, with respect to the boundary line specified by the legislator.
  • the transition area can be offset from the upper area and the lower area and the asymmetrical gusset area can be arranged approximately opposite one another.
  • the surface profile of the reflection surface in the transition area can be selected independently of the surface profile of the reflection surface in the upper region and in the lower region, whereby steps can certainly arise at the transitions between the regions.
  • transition area paraboloidal it is advantageous to make the transition area paraboloidal, because this is a simple and inexpensive option and because in this case the spiral images largely overlap.
  • other configurations of the reflection surface in the transition area are also feasible.
  • the reflector according to the invention has an asymmetrical gusset area or sector (1), an upper reflector area (2), a lower reflector area (3) and a transition area or counter sector (4).
  • the asymmetrical gusset area (1) and the transition area (4) or the upper reflector area and the lower reflector area (3) are opposite each other arranged.
  • the outer boundary of the reflector according to FIG. 1 is circular. However, other outer reflector limits, e.g. B. rectangular reflector limits can be selected.
  • the position and dimensions of the individual areas 1-4, in particular of the asymmetrical gusset area (1) and the transition area (4), are dependent on a boundary line or light-dark boundary specified by the respective legislator, which determines the predetermined or desired light distribution the reflector according to the invention reflects reflected light on a screen arranged in front of the reflector.
  • the arrangement and outer dimensions of the areas 1-4 are adapted to the requirements of German law on the filing date.
  • FIG. 2 The spatial arrangement of the reflector regions 1-4 is shown in FIG. It can be seen that the reflector according to the invention according to FIGS. 1 and 2 has clear steps in the transition from one reflector region to the next.
  • FIG. 2 a coordinate cross of a coordinate system is shown in FIG. 2, which has a first spatial direction (X), a second spatial direction (Y) and a third spatial direction (Z).
  • the representation of FIG. 1 lies in a plane parallel to the plane spanned by the first spatial direction (X) and the second spatial direction (Y).
  • the third spatial direction (Z) is the direction in which the reflector according to the invention essentially reflects the light of an incandescent lamp in the push-through opening (5).
  • the third spatial direction (Z) is also the direction of travel of the motor vehicle.
  • the first spatial direction (X) and the second spatial direction (Y) also span the plane to which the observation screen of the spiral images according to FIGS. 3-6 is arranged in parallel.
  • the first spatial direction (X) and the second spatial direction (Y) are shown in dashed lines in FIG. Furthermore, the boundary line or light-dark boundary (G) prescribed by the German legislation is shown, which is characterized in that in FIG. 3 the boundary line (G) corresponds to the first spatial direction (X) to the left of the second spatial direction (Y) . Furthermore, the boundary line (G) with the first spatial direction (X) in FIG. (3) to the right of the second spatial direction (Y) encloses an angle specified by the legislator.
  • a first spiral image (W1) and a second spiral image (W2) are shown as representative of a large number of images of the filament of the incandescent lamp reflected by the asymmetrical gusset region (1) on the observation screen, which represent the multiplicity of those of the asymmetrical gusset region (1 ) reflected spiral images.
  • the boundary of the spiral images reflected by the asymmetrical gusset region (1) is thus limited by the first spiral image (W1), the second spiral image (W2) and the connecting lines drawn between the two spiral images.
  • the surface course of the reflection surface in the asymmetrical gusset region (1) is designed in such a way that each spiral image reflected at any point on the reflection surface is mounted with one and the same point in the immediate vicinity of the limit line specified by German law.
  • this point of the helix images lies on a predetermined path which is essentially parallel to the vertical plane passing through the central axis in the immediate vicinity Is close to the limit line specified by the German Congress.
  • the end points of the path (S) are determined by the respective point of the first spiral image (W1) and the second spiral image (W2).
  • FIG. 4 the same or equivalent drawing parts as in FIG. 3 are provided with the same reference numerals.
  • the transition region (4) is designed in such a way that each spiral image reflected at any point on the reflection surface overlaps as far as possible with the other spiral images and is mounted in the immediate vicinity of the limit line (G) specified by law.
  • the roadway of the motor vehicle in the distant area in front of the motor vehicle can be illuminated with high luminance in the direction of the central axis of the headlight, which corresponds to the third spatial direction (Z).
  • this measure enables a uniform decrease in the luminance from the center of the lane of the own lane, which is characterized by the intersection of the first spatial direction (X) and the second spatial direction (Y), to the left lane edge in FIG.
  • the transition area (4) thus essentially carries to illuminate the area from your own lane center to the left edge of the lane, whereby by arranging the third spiral pattern (W3) essentially on the limit line (G) specified by the legislator, an excessive and forbidden by the legislator dazzling oncoming traffic is avoided.
  • FIG. 5 the same or equivalent drawing parts as in FIGS. 3 and 4 are provided with the same reference numerals as in FIGS. 3 and 4. Furthermore, a fifth spiral image (W5) and a sixth spiral image (W6) is shown that, together with the connecting lines between these two spiral images (W5 and W6) in FIG. 5, delimits the area into which the plurality of the upper reflector area (2) of the reflected reflector according to the invention is arranged on the screen of Figure 5.
  • the upper reflector area is designed in such a way that each helical image reflected at any point in the upper reflector area (2), in particular the reflected helical images (W5 and W6) shown, is mounted in the immediate vicinity of the limit line (G) specified by German law is and that the angle of the long axis (A and A ') of the spiral images (W5 and W6) differs as little as possible from the horizontal, given by the first spatial direction (X). It should be taken into account that, due to the physical laws of reflection, the reflector according to the invention also does not allow the helix images to be rotated around the point, predetermined by the intersection of the first spatial direction (X) and the second spatial direction (Y).
  • the inventive design of the reflector makes it possible to cover the entire area Illuminate the lane width, in particular the own lane of the motor vehicle, with as uniform a luminance as possible, because the spiral images overlap less in the area of the perpendicular, given by the second spatial direction (Y), than in the area outside of the vertical, given by the first spatial direction (X).
  • this measure achieves the most uniform possible illumination of one's own lane center from the apron close to the motor vehicle headlight to almost the horizontal far from the motor vehicle headlight.
  • the inventive design of the upper reflector region (2) thus expands the light impression produced by the helical images reflected by the upper reflector region (2) compared to the prior art.
  • FIG. 6 the same or equivalent drawing parts as in FIGS. 3-5 are provided with the same reference numerals as in FIGS. 3-5.
  • a seventh spiral pattern (W7) and an eighth spiral pattern (W8) are shown in FIGS.
  • the spiral images (W7 and W8) again delimit an area in which the plurality of spiral images reflected by the lower reflector region (3) is arranged.
  • This lower reflector area (3) is essentially useless in the previously known conventional headlights for illuminating the roadway in front of the motor vehicle, because when a reflector is constructed from mathematical rain areas and without steps between the reflector areas, the helix images reflected by the lower reflector area are substantially above that the light-dark limit (G) specified by law.
  • G light-dark limit
  • reflection of the helix patterns is ensured only in areas below the limit line (G) prescribed by law and in such a way that each spiral image reflected at any point on the reflection surface is stored in the immediate vicinity of the limit line specified by law and that the angle of the long axes (A ⁇ and A ′′′) of the spiral images (W7 and W8) deviates as little as possible from the horizontal.
  • the lower reflector area (3) contributes to the illumination of the road ahead in front of the motor vehicle without any noteworthy losses, no corrective measures being necessary on the lens or cover lens of the headlight with the reflector according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP89102305A 1988-03-11 1989-02-10 Réflecteur de phare de croisement pour véhicules automobiles Withdrawn EP0331928A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3808086A DE3808086A1 (de) 1988-03-11 1988-03-11 Reflektor fuer abgeblendete oder abblendbare kraftfahrzeugscheinwerfer
DE3808086 1988-03-11

Publications (2)

Publication Number Publication Date
EP0331928A2 true EP0331928A2 (fr) 1989-09-13
EP0331928A3 EP0331928A3 (fr) 1990-06-20

Family

ID=6349451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89102305A Withdrawn EP0331928A3 (fr) 1988-03-11 1989-02-10 Réflecteur de phare de croisement pour véhicules automobiles

Country Status (6)

Country Link
US (1) US4945454A (fr)
EP (1) EP0331928A3 (fr)
JP (1) JPH01260702A (fr)
AU (1) AU622437B2 (fr)
DD (1) DD283670A5 (fr)
DE (1) DE3808086A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2740858A1 (fr) * 1995-11-08 1997-05-09 Valeo Vision Projecteur de vehicule automobile, comportant un miroir capable d'engendrer par lui-meme un faisceau a coupure en v
EP0832785A3 (fr) * 1996-09-26 1999-03-31 Hella KG Hueck & Co. Dispositif pour adapter l'éclairage et les phares d'un véhicule

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2517485B2 (ja) * 1991-01-23 1996-07-24 株式会社小糸製作所 車輌用前照灯の反射鏡
JP2610546B2 (ja) * 1991-01-25 1997-05-14 株式会社小糸製作所 車輌用前照灯の反射鏡
JP2750647B2 (ja) * 1992-08-14 1998-05-13 株式会社小糸製作所 車輌用前照灯の反射鏡
DE4228890B4 (de) * 1992-08-29 2006-03-16 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge
JP2681588B2 (ja) * 1993-01-18 1997-11-26 株式会社小糸製作所 照明灯具の反射鏡
JPH09237504A (ja) * 1996-02-23 1997-09-09 Patent Treuhand Ges Elektr Gluehlamp Mbh 下向き及び上向きライト用自動車前照灯
CA2200511C (fr) * 1996-03-20 2001-02-06 Myron K. Gordin Appareil d'eclairage a efficacite amelioree, reflecteur et methode correspondants
DE19639494A1 (de) 1996-09-26 1998-04-02 Hella Kg Hueck & Co Fahrzeugscheinwerfer
FR2760070B1 (fr) * 1997-02-21 1999-05-28 Valeo Vision Projecteur comportant une lampe a deux filaments pour engendrer un faisceau coupe et un faisceau non coupe
DE19844839B4 (de) * 1998-09-30 2010-07-22 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge
US6203176B1 (en) 1998-12-14 2001-03-20 Musco Corporation Increased efficiency light fixture, reflector, and method
FR2792999B1 (fr) * 1999-04-29 2001-09-14 Valeo Vision Projecteur bi-fonction a source unique et a optique fixe pour vehicule automobile
AT413753B (de) 1999-08-16 2006-05-15 Zizala Lichtsysteme Gmbh Fahrzeugscheinwerfer
US6412961B1 (en) * 2000-05-30 2002-07-02 Robert Andrew Hicks Rectifying mirror
FR2844867B1 (fr) * 2002-09-20 2005-07-08 Valeo Vision Dispositif projecteur de vehicule automobile a miroir et element de deviation conjugues avec coupure non plate
DE10318051A1 (de) * 2003-04-17 2004-11-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Halogenglühlampe
DE102004058750A1 (de) 2004-12-06 2006-06-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Einseitig gesockelte Hochdruckentladungslampe
DE102005029671A1 (de) * 2005-06-22 2006-12-28 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Kühlsystem für einen Scheinwerfer
DE102008056103A1 (de) * 2008-11-06 2010-05-12 Erco Gmbh Leuchte
USD608492S1 (en) * 2009-05-01 2010-01-19 Molex Incorporated Illumination device
USD608493S1 (en) * 2009-05-05 2010-01-19 Molex Incorporated Illumination device
US8917437B2 (en) 2012-07-18 2014-12-23 Magna Mirrors Of America, Inc. Mirror assembly with formed reflective element substrate

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2205610C3 (de) * 1972-02-07 1978-03-23 Westfaelische Metall Industrie Kg, Hueck & Co, 4780 Lippstadt Abblendbarer Fahrzeugscheinwerfer
DE2644385A1 (de) * 1976-10-01 1978-04-06 Westfaelische Metall Industrie Abblendbarer scheinwerfer
FR2460442A1 (fr) * 1979-06-29 1981-01-23 Cibie Projecteurs Nouvelle structure de projecteur, notamment de projecteur d'automobile
DE3226580A1 (de) * 1981-12-08 1983-06-16 Robert Bosch Gmbh, 7000 Stuttgart Scheinwerfer fuer kraftfahrzeuge
FR2536502B1 (fr) * 1982-11-19 1987-01-09 Cibie Projecteurs Projecteur de croisement pour vehicule automobile
FR2599121B1 (fr) * 1986-05-26 1988-09-16 Cibie Projecteurs Projecteur de croisement sans coupelle a concentration decalee
FR2600024B1 (fr) * 1986-06-17 1988-10-21 Cibie Projecteurs Projecteur additionnel a un projecteur de croisement pour vehicule automobile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2740858A1 (fr) * 1995-11-08 1997-05-09 Valeo Vision Projecteur de vehicule automobile, comportant un miroir capable d'engendrer par lui-meme un faisceau a coupure en v
EP0773400A1 (fr) * 1995-11-08 1997-05-14 Valeo Vision Projecteur de véhicule automobile, comportant un miroir capable d'engendrer par lui-même un faisceau à coupure en V
US5951156A (en) * 1995-11-08 1999-09-14 Valeo Vision Motor vehicle headlamp having a reflector capable of producing, by itself, a light beam with a V-shaped cut-off
EP0832785A3 (fr) * 1996-09-26 1999-03-31 Hella KG Hueck & Co. Dispositif pour adapter l'éclairage et les phares d'un véhicule

Also Published As

Publication number Publication date
DD283670A5 (de) 1990-10-17
DE3808086C2 (fr) 1992-03-05
EP0331928A3 (fr) 1990-06-20
US4945454A (en) 1990-07-31
AU3072389A (en) 1989-09-14
DE3808086A1 (de) 1989-09-28
JPH01260702A (ja) 1989-10-18
AU622437B2 (en) 1992-04-09

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