EP1052449A2 - Projecteur pour véhicules - Google Patents

Projecteur pour véhicules Download PDF

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Publication number
EP1052449A2
EP1052449A2 EP20000109700 EP00109700A EP1052449A2 EP 1052449 A2 EP1052449 A2 EP 1052449A2 EP 20000109700 EP20000109700 EP 20000109700 EP 00109700 A EP00109700 A EP 00109700A EP 1052449 A2 EP1052449 A2 EP 1052449A2
Authority
EP
European Patent Office
Prior art keywords
reflector
lens
brightening
headlight according
light
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
EP20000109700
Other languages
German (de)
English (en)
Other versions
EP1052449B1 (fr
EP1052449A3 (fr
Inventor
Franz-Josef Kalze
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 EP1052449A2 publication Critical patent/EP1052449A2/fr
Publication of EP1052449A3 publication Critical patent/EP1052449A3/fr
Application granted granted Critical
Publication of EP1052449B1 publication Critical patent/EP1052449B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • 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
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • 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
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • 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
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
    • F21W2102/18—Arrangement or contour of the emitted light for regions other than high beam or low beam for overhead signs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/20—Illuminance distribution within the emitted light

Definitions

  • the invention relates to a headlight for vehicles with a bowl-shaped reflector, with a light source assigned to the reflector, with a lens arranged in the beam path of the reflector, which lens from the Reflector collects reflected light and a convex facing away from the reflector Has side, and with a screen surrounding the lens
  • Such a headlight for vehicles is known from DE 41 27 403 C2.
  • the Headlights have a plastic housing, the front Opening is completed by a translucent lens.
  • a light unit is arranged inside the housing and has an ellipsoidal shape Reflector, a lens and an aperture arranged between the lens and reflector having.
  • the light unit is used to generate a dimmed light.
  • the Lens is surrounded by a screen, which is held on the housing.
  • Such Visors are often on the side facing the lens with a reflective surface.
  • the screens shield the one hand View into the headlight interior and on the other hand they give it Headlights have a homogeneous, brilliant appearance.
  • the disadvantage here is that when the headlights are switched on, the active light emission only through the small one Dimensional lens is determined and thus perceived as dazzling becomes.
  • the headlight known from DE 197 04 4766 A1 there is between one ellipsoidal reflector and a lens an annular brightening reflector arranged.
  • the fill-in reflector directs light rays that come directly from a inner focal point of the reflector arranged light source emerge from the lens past. This means that when you look at the headlight appears at switched on light source not only illuminates its light source but also the additional brightening reflector, so that overall a larger area is illuminated is as the area of the lens and the subjective glare is reduced.
  • the brightening reflector between the lens and the ellipsoidal reflector the view of a holder supporting the lens, the Aperture and the light source located in the inner focal point of the reflector. So that the headlamp is homogeneous brilliant in this area too Appearance, the holder and the bezel must be elegantly designed and be provided with a reflective surface. Through this reflective Surface of the holder can dazzle the oncoming traffic arise.
  • the lens itself can be viewed as a light source / illuminant.
  • the projection of this light source represents an independent optical system (brightening of the surroundings through lens projection).
  • the reflector, the light source and the lens provide the main light beam.
  • the luminance generated from the brightening reflector (surrounding reflector) creates a low, homogeneous level of glare in the oncoming traffic area.
  • the oncoming driver therefore does not define the lens, but the entire surface of the lens and fill-in reflector as the light-active surface.
  • the prerequisite for a pleasant appearance for oncoming traffic is the homogeneity of the luminance distribution over the entire illuminating surface of the brightening reflector.
  • the headlight for vehicles has a light unit (15), which in one Headlight housing, not shown, is arranged.
  • the light unit (15) can be rigidly connected to the headlight housing or in the The headlight housing can be mounted so as to be adjustable about at least one axis.
  • the Light unit (15) has an ellipsoidal reflector (1), in the interior of which Burning location a light source (2) is arranged.
  • a light source (2) Incandescent lamp or a gas discharge lamp are used.
  • the lamp is in one in the Peak area of the reflector (1) introduced opening (16) and through a socket (17) is held on the reflector (1).
  • the lens (3) is over one Lens holder (18) connected to the front edge of the reflector (1).
  • the Lens (3) has a flat side (19) facing the reflector (1) and one Reflector (1) facing away from the convex side (4)
  • the ellipsoidal reflector (1) is provided on its front with a reflective surface (20) by a Freeform surface is determined.
  • the freeform surface cannot be mathematical Function are described, but is chosen freely.
  • From the light source (2) outgoing light rays (21) reflected by the reflector (1) produce a Main light beam (12) with one imaged by the aperture (14) Cut-off line (22).
  • the main light beam (12) can be symmetrical or serve asymmetrical low beam.
  • Light rays (21) run with respect to the optical axis (9) of the light unit (15) inclined downwards at an angle (a).
  • the lens (3) with its convex side (4) dips through one Receiving opening (24) of a paraboloid-shaped brightening reflector (5).
  • the brightening reflector (5) borders on the edge area of its receiving opening (24) convex side (4) of the lens (3) and is with this edge area on the Lens holder (8) attached.
  • Brightening reflector (5) is a reflection surface (6), which is a in each radial section paraboloidal line describes.
  • the paraboloid-shaped brightening reflector (5) has a focal area assigned to the lens (3), which in the inside and / or is arranged outside the lens (3).
  • the paraboloid-shaped brightening reflector (5) has at least one optical axis (23) which is parallel to the optical axis (9) of the light unit (15) runs.
  • the brightening reflector (5) shown in Figure 2 surrounds the lens (3) at a distance and is attached to the headlight housing, not shown.
  • the convex Side (4) of the lens (3) has a roughness in the micro area Parts of the light diffuse outwards, while other parts enter the lens totally reflect so that they come out on the other side of the lens.
  • This light components deflected by the lens (3) are those on the reflection surface (6) of the Lightening reflector (5) light rays (7), which a secondary light beam (13) produce.
  • the brightening reflector (5) shown in FIGS. 1 and 2 is thus to the light unit (15) aligned that its secondary light beam (13) at least for the most part is arranged above the main light beam (12). From the fill reflector (5) generated luminance levels do not create any disturbing effects for oncoming traffic Glare.
  • the headlight shows a pleasant for the oncoming traffic Appearance, since not only the lens (3) but also the lens (3) completely surrounding fill-in reflector (5) is illuminated.
  • FIG. 2 there is a circumferential line (8) on the convex side (4) of the lens (3) shown, through which optical axes (23) run, which together a Form a cylinder whose central axis coincides with the optical axis (9) of the light unit (15) coincides.
  • the optical axes (23) are from the paraboloid lines formed, which result in radial sections through the brightening reflector (5).
  • the brightening reflector (5) can be placed in a large screen of a headlight several light units can be integrated. Such screens are either on Headlight housing or a lens attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP20000109700 1999-05-10 2000-05-08 Projecteur pour véhicules Expired - Lifetime EP1052449B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19921511 1999-05-10
DE1999121511 DE19921511A1 (de) 1999-05-10 1999-05-10 Scheinwerfer für Fahrzeuge

Publications (3)

Publication Number Publication Date
EP1052449A2 true EP1052449A2 (fr) 2000-11-15
EP1052449A3 EP1052449A3 (fr) 2003-01-29
EP1052449B1 EP1052449B1 (fr) 2004-08-25

Family

ID=7907589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000109700 Expired - Lifetime EP1052449B1 (fr) 1999-05-10 2000-05-08 Projecteur pour véhicules

Country Status (4)

Country Link
EP (1) EP1052449B1 (fr)
AT (1) ATE274673T1 (fr)
DE (2) DE19921511A1 (fr)
ES (1) ES2224958T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1422470A1 (fr) * 2002-11-22 2004-05-26 Valeo Vision Dispositif projecteur pour véhicule automobile avec plage éclairante élargie
DE10306890A1 (de) * 2003-02-18 2004-08-26 Hella Kg Hueck & Co. Scheinwerfer für Fahrzeuge
EP3168528A1 (fr) * 2015-11-11 2017-05-17 Stanley Electric Co., Ltd. Dispositif d'éclairage de véhicule
EP2999920B1 (fr) 2012-05-15 2018-10-03 Musco Corporation Appareil, procédé et système pour étapes de visée et d'interruption indépendantes dans l'éclairage d'une zone cible
US10139069B2 (en) * 2014-12-24 2018-11-27 Shanghai Koito Automotive Lamp Co., Ltd Partially aluminized lens for automotive lamp

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127403C2 (de) 1990-08-17 1994-02-24 Koito Mfg Co Ltd Kraftfahrzeugscheinwerfer mit einer Sichtblendenanordnung
DE19704467A1 (de) 1997-02-06 1998-08-13 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3519271C1 (de) * 1985-05-30 1986-08-28 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Abgeblendeter Fahrzeugscheinwerfer nach dem Projektionsprinzip
US4949226A (en) * 1988-06-24 1990-08-14 Koito Seisakusko Co., Ltd. Projector-type lighting device of expanded outline appearance for use as a vehicular headlamp or the like
JP2610088B2 (ja) * 1993-03-08 1997-05-14 株式会社小糸製作所 補助ランプ内蔵自動車用ヘッドランプ
DE19655357B4 (de) * 1996-05-25 2009-01-15 Automotive Lighting Reutlingen Gmbh Fahrzeug-Scheinwerfer
DE19704426B4 (de) * 1997-02-06 2005-12-15 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip
DE19814478A1 (de) * 1997-07-10 1999-01-14 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127403C2 (de) 1990-08-17 1994-02-24 Koito Mfg Co Ltd Kraftfahrzeugscheinwerfer mit einer Sichtblendenanordnung
DE19704467A1 (de) 1997-02-06 1998-08-13 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1422470A1 (fr) * 2002-11-22 2004-05-26 Valeo Vision Dispositif projecteur pour véhicule automobile avec plage éclairante élargie
FR2847656A1 (fr) * 2002-11-22 2004-05-28 Valeo Vision Dispositif projecteur avec plage eclairante elargie
DE10306890A1 (de) * 2003-02-18 2004-08-26 Hella Kg Hueck & Co. Scheinwerfer für Fahrzeuge
EP2999920B1 (fr) 2012-05-15 2018-10-03 Musco Corporation Appareil, procédé et système pour étapes de visée et d'interruption indépendantes dans l'éclairage d'une zone cible
US10139069B2 (en) * 2014-12-24 2018-11-27 Shanghai Koito Automotive Lamp Co., Ltd Partially aluminized lens for automotive lamp
EP3239601B1 (fr) * 2014-12-24 2020-05-27 Hasco Vision Technology Co., Ltd. Lentille partiellement aluminisée pour lampe d'automobile
EP3168528A1 (fr) * 2015-11-11 2017-05-17 Stanley Electric Co., Ltd. Dispositif d'éclairage de véhicule
US10352520B2 (en) 2015-11-11 2019-07-16 Stanley Electric Co., Ltd. Vehicle lighting fixture

Also Published As

Publication number Publication date
DE19921511A1 (de) 2000-11-16
EP1052449B1 (fr) 2004-08-25
ES2224958T3 (es) 2005-03-16
ATE274673T1 (de) 2004-09-15
EP1052449A3 (fr) 2003-01-29
DE50007538D1 (de) 2004-09-30

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