EP0221416A2 - Projecteur de croisement ou de brouillard pour automobiles - Google Patents

Projecteur de croisement ou de brouillard pour automobiles Download PDF

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Publication number
EP0221416A2
EP0221416A2 EP19860114383 EP86114383A EP0221416A2 EP 0221416 A2 EP0221416 A2 EP 0221416A2 EP 19860114383 EP19860114383 EP 19860114383 EP 86114383 A EP86114383 A EP 86114383A EP 0221416 A2 EP0221416 A2 EP 0221416A2
Authority
EP
European Patent Office
Prior art keywords
lens
headlight according
headlamp
light
partial
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
EP19860114383
Other languages
German (de)
English (en)
Other versions
EP0221416B1 (fr
EP0221416A3 (en
Inventor
Gerhard Dipl.-Ing. Lindae
Richard Loewe
Peter Perthus
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Priority claimed from DE3602262A external-priority patent/DE3602262C2/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0221416A2 publication Critical patent/EP0221416A2/fr
Publication of EP0221416A3 publication Critical patent/EP0221416A3/de
Application granted granted Critical
Publication of EP0221416B1 publication Critical patent/EP0221416B1/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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing 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
    • F21S41/255—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
    • F21S41/20—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

Definitions

  • the invention relates to a headlamp for low beam or fog light of motor vehicles according to the preamble of claim 1. It is known with such headlamps that their light distribution is essentially determined by the shape of the reflector. In addition, it has already been proposed to suppress or even switch off the disturbing, inadmissible color fringe of the light beam by optical means as far as possible.
  • the one-piece arrangement of the means on the lens means that no devices are required which cause increased technical outlay and could possibly impair the function of the headlamp.
  • Claim 16 shows a way to obtain the surface scattering in the specified scattering range.
  • the micro-elements are arranged as a so-called grain or orange peel structure on at least one lens surface of the illumination optics (condenser) in order to thereby resolve the structure of the luminous element, which is imaged in the image window of the projector.
  • Micro elevations on a lens the imaging optics, ie on the projection lens, would be an unreasonable shortcoming in film projection technology.
  • the reflector is arranged instead of the condenser, and it is essential in comparison to the film projection technology that the micro elevations are used in a targeted manner within the projection optics.
  • Claim 18 shows a way to determine the structure of the pressing tool that forms the micro elevations in a technically simple manner.
  • the desired blurring of the light-dark boundary is achieved even if only a partial area of the lens surface has the micro elevations.
  • FIG. 1 a perspective illustration of a headlight for low beam of motor vehicles in the first embodiment of the lens
  • FIG. 2 shows an axial section in sections in the region of two partial surfaces of one side of the objective
  • Figure 3 is a front view of the lens in the second embodiment
  • Figure 4 shows the axial section through the lens in a third embodiment in a first modification
  • FIG. 5 shows the view of the objective in the direction of the reflected light beams in a third embodiment as well, but in a second modification.
  • FIG. 6 shows a greatly enlarged section of an axial section through an objective
  • 7 shows sections of the greatly enlarged axial section through a lens with an adjacent pressing tool in a first embodiment
  • Figure 8 as Figure 7, but in a second embodiment
  • FIGS. 9a to 9d the reduced front view of the objective with four different forms of formation of partial areas with a smooth surface.
  • a headlight for low beam of motor vehicles has a reflector 10, a light source 11 and an axis 12.
  • the rays (not shown) generated by the light source 11 form a light bundle by reflection on the reflector 10; in its beam path are arranged: the optically active edge 14 of a diaphragm 13 and in front of it an objective 15 made of pressed glass; this forms the edge 14 of the diaphragm 13 as the light-dark boundary of the low beam on the road.
  • the side of the objective facing away from the reflector 10 has a central, aspherical partial surface 16 and an upper and lower, also aspherical partial surface 17, 17 '; the asphere of the partial area 16 is different from that of the two partial areas 17, 17 '.
  • the adjacent sub-areas 16/17 and 16/17 ' touch in a line 18 which lies in one plane.
  • the line of contact between adjacent partial areas can lie in an arched or annular plane.
  • the partial areas 16, 17, 17 ' are optical means for influencing the light distribution and for correcting the color fringe from the light beam. This is achieved by changing the asphere.
  • the partial surfaces 16, 17 (and likewise 17 ′) with the same or different aspheres of the objective 15 are offset from one another in the direction of the axis 12 of the headlamp, and the step 19 resulting from the offset is rounded, i. H. the step 19 forms a round edge 20 with the partial surface 17 and a fillet 21 with the partial surface 16.
  • the one side 26 is non-rotationally symmetrical, with axial sections of this side 26 changing continuously in at least one parameter of the associated lens formula.
  • the lens formula so the changeable parameter is "c" and / or "q".
  • the shape of the asphere of the non-rotationally symmetrical side 26 of the objective 25 changes in such a way that a maximum deviation of zero angular degrees is reached at 90 degrees.
  • the lens 35 in FIG. 4 of the third embodiment and in a first modification has a convex side 37 and a plane side 36 facing the reflector 10 (FIG. 1); this has, as optical means, scattering profiles which are concave lenses 38 and convex lenses 39 which are arranged alternately and which are concentrated with respect to the axis 12 are arranged trically and rotationally.
  • scattering profiles which are concave lenses 38 and convex lenses 39 which are arranged alternately and which are concentrated with respect to the axis 12 are arranged trically and rotationally.
  • the objective can have a slightly curved side with the scattering profiles instead of the plane side; this side is expediently designed to be concave.
  • the lens 45 of the third embodiment and in the second modification according to FIG. 5 has on one side 46 linear and vertical scatter profiles 47, which are preferably cylindrical lenses.
  • the fourth embodiment in FIG. 6 shows the lens 55 made of pressed glass or plastic with the aspherical partial surface 56; this is formed by one-piece means 58, so-called micro elements, in particular micro elevations, known under the name "grain” or "orange peel structure". This results in a blurring (softening) of the light-dark boundary of the light beam on the road in the desired manner.
  • the angle 60, 60 ', which the tangent 59, 59' of a point 57, 57 'of the micro elevation 58 forms with the tangent 61, 61' of the associated point 57, 57 "of the ideal line 54 of the objective 55, is intended to be a specific range (e.g. ⁇ 5 degrees).
  • Figure 7 shows sections of a press tool 62 with its recess 63; this is formed as a smooth structure either by non-cutting processing such as indentation, driving in, or by machining such as eroding, grinding, sandblasting, shot peening.
  • the entirety of the recesses 63 form the micro elevations 58 on the aspherical side 56 of the objective 55.
  • the recess 63 'of the pressing tool 62' in FIG. 8 has a rough, completely irregular structure which is such that the glass or the plastic only partially covers the recesses of the recess 63 'and the micro elevations 58 are thereby formed .
  • FIGS. 9a to 9d show the aspherical side 56 of the objective 55 with the horizontal central plane 64 and the vertical central plane 65 of the objective 55.
  • the aspherical side each has a partial region 66 to 69 with a smooth surface that does not scatter the light passing through.
  • the partial region 66 is a horizontal central stripe with two horizontal boundaries 70 or a horizontal central stripe 67 with two arched boundaries 71, these being the smallest mutual distance in the horizontal central plane 64, or a circular surface 68 that is relative to the axis 12 of the objective 55 is arranged concentrically, or with respect to the axis 12 central rectangular surface 69 with horizontal narrow sides.
  • the horizontal center plane 64 and the vertical center plane 65 intersect in the axis 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP86114383A 1985-11-07 1986-10-17 Projecteur de croisement ou de brouillard pour automobiles Expired - Lifetime EP0221416B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3539452 1985-11-07
DE3539452 1985-11-07
DE3602262A DE3602262C2 (de) 1985-11-07 1986-01-25 Refraktorelement für einen Kraftfahrzeugscheinwerfer für Abblendlicht oder Nebellicht
DE3602262 1986-01-25

Publications (3)

Publication Number Publication Date
EP0221416A2 true EP0221416A2 (fr) 1987-05-13
EP0221416A3 EP0221416A3 (en) 1989-11-02
EP0221416B1 EP0221416B1 (fr) 1995-09-27

Family

ID=25837611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114383A Expired - Lifetime EP0221416B1 (fr) 1985-11-07 1986-10-17 Projecteur de croisement ou de brouillard pour automobiles

Country Status (3)

Country Link
US (2) US4796171A (fr)
EP (1) EP0221416B1 (fr)
JP (1) JP2509194B2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325254A3 (en) * 1988-01-20 1990-04-25 Ichikoh Industries Limited Projector-type head lamp for vehicles
WO2005050087A1 (fr) * 2003-11-21 2005-06-02 Zumtobel Staff Gmbh Lampe a element de sortie de lumiere transparent
EP2372236A1 (fr) * 2010-03-23 2011-10-05 Hella KGaA Hueck & Co. Elément optique destiné à l'agencement dans un phare de véhicule
EP2474779A4 (fr) * 2009-09-04 2015-09-09 Stanley Electric Co Ltd Luminaire de véhicule
EP3214364A1 (fr) * 2016-03-02 2017-09-06 Valeo Vision Lentille amelioree pour dispositif d'eclairage de vehicule automobile

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6486401A (en) * 1987-09-29 1989-03-31 Koito Mfg Co Ltd Head light of vehicle
JP2754690B2 (ja) * 1989-03-31 1998-05-20 市光工業株式会社 プロジェクタ型前照灯
JPH0817045B2 (ja) * 1989-10-06 1996-02-21 株式会社小糸製作所 自動車用ヘッドランプ
JP2655741B2 (ja) * 1990-06-25 1997-09-24 株式会社小糸製作所 投射型自動車用ヘッドランプ
US5667291A (en) 1995-05-23 1997-09-16 Surgical Acuity, Inc. Illumination assembly for dental and medical applications
JP3886672B2 (ja) 1999-07-12 2007-02-28 株式会社小糸製作所 車両用前照灯
US6565233B1 (en) * 1999-08-17 2003-05-20 Brian Edward Richardson Color, size and distribution module for projected light
FR2799269B1 (fr) * 1999-09-30 2001-12-21 Valeo Vision Procede pour la modification de repartition de lumiere d'eclairage, et projecteur et element dioptrique mettant en oeuvre ce procede
DE10226471B4 (de) * 2002-06-14 2007-03-22 Schott Ag Optische Linse mit Weichzeicheneffekt
FR2841512B1 (fr) * 2002-06-28 2005-01-07 Valeo Vision Dispositif projecteur pour vehicule automobile eclairant des points de portique
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
DE10309434B4 (de) * 2003-03-05 2016-11-24 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
FR2853394B1 (fr) * 2003-04-03 2006-03-10 Valeo Vision Dispositif de projection pour vehicule automobile eclairant des points de portique
DE102004018424B4 (de) * 2004-04-08 2016-12-08 Docter Optics Se Verfahren zur Herstellung einer Linse
US7563008B2 (en) * 2006-03-28 2009-07-21 Visteon Global Technologies, Inc. LED projector headlamps using single or multi-faceted lenses
JP4597890B2 (ja) * 2006-03-29 2010-12-15 株式会社小糸製作所 車両用前照灯の灯具ユニット
JP4782064B2 (ja) * 2007-04-10 2011-09-28 株式会社小糸製作所 車両用灯具ユニット
EP2147339A1 (fr) * 2007-05-14 2010-01-27 Heptagon OY Système d'éclairage
US7686486B2 (en) * 2007-06-30 2010-03-30 Osram Sylvania Inc. LED lamp module
JP5150235B2 (ja) * 2007-12-14 2013-02-20 スタンレー電気株式会社 ダイレクトプロジェクター型灯具の投影レンズ
FR2925656B1 (fr) * 2007-12-21 2013-08-23 Holophane Lentille de module d'eclairage de vehicule automobile
TWI338637B (en) * 2008-12-29 2011-03-11 Univ Nat Central Automobile lamp
JP5516854B2 (ja) * 2009-10-08 2014-06-11 スタンレー電気株式会社 車両用灯具
JP5510805B2 (ja) * 2010-03-01 2014-06-04 スタンレー電気株式会社 自動二輪車用プロジェクタ型ヘッドランプ
DE102010035767A1 (de) * 2010-08-20 2012-02-23 Automotive Lighting Reutlingen Gmbh Projektionsscheinwerfer mit gezielt abgeschwächtem Lichtintensitätsgradienten an der Hell-Dunkel-Grenze
CN102003679A (zh) * 2010-12-30 2011-04-06 江苏欣力光电有限公司 一种led灯用透镜
CN102109143A (zh) * 2010-12-30 2011-06-29 江苏欣力光电有限公司 一种大功率照明级led光源速导热封装结构
EP2500628B1 (fr) * 2011-03-14 2020-05-06 Stanley Electric Co., Ltd. Phare de véhicule
JP5798881B2 (ja) * 2011-10-24 2015-10-21 スタンレー電気株式会社 プロジェクタレンズ及びその製造方法並びにこのプロジェクタレンズを用いた自動車用ヘッドランプ
US9429657B2 (en) 2011-12-14 2016-08-30 Microsoft Technology Licensing, Llc Power efficient activation of a device movement sensor module
WO2014208655A1 (fr) * 2013-06-26 2014-12-31 市光工業株式会社 Luminaire de véhicule
DE102013112128B4 (de) 2013-11-05 2023-03-30 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
DE102014100904A1 (de) 2014-01-27 2015-07-30 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für Fahrzeuge
JP6663164B2 (ja) * 2014-02-24 2020-03-11 株式会社小糸製作所 車両用灯具ユニット
WO2016014785A1 (fr) * 2014-07-23 2016-01-28 Myotek Pacific Corp. Lentille de phare antibrouillard et ensemble
DE102020109869A1 (de) 2019-05-03 2020-11-05 Docter Optics Se Verfahren zur Herstellung eines optischen Elementes aus Glas
TWI726829B (zh) * 2020-11-17 2021-05-01 坦德科技股份有限公司 導光柱結構

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US1601688A (en) * 1923-05-08 1926-09-28 Harriett Melvina Nystrom Automobile headlight glass
US1539090A (en) * 1923-10-06 1925-05-26 Ernest S King Headlight
CH129718A (de) * 1927-07-06 1929-01-02 Eduard Liebherr Lichtfilter zur Verhütung der Blendwirkung von Scheinwerfern.
DE747935C (de) * 1938-02-17 1944-10-20 Elektrischer Fahrzeug-, insbesondere Kraftfahrzeugscheinwerfer
FR1024352A (fr) * 1950-09-06 1953-04-01 Machal Projecteurs Perfectionnements aux projecteurs routiers
CH377298A (de) * 1959-01-24 1964-05-15 Bosch Gmbh Robert Elektrischer Fahrzeugscheinwerfer
US3431449A (en) * 1966-08-05 1969-03-04 Arthur R Brown Non-glare sealed beam headlights
US3578966A (en) * 1969-11-05 1971-05-18 Sylvania Electric Prod Vehicle driving light
AU505317B2 (en) * 1976-08-23 1979-11-15 Thorn Electrical Industries Limited Suppression of colour fringing in lamps
FR2396240A1 (fr) * 1977-07-01 1979-01-26 Cibie Projecteurs Projecteur croisement-route de grande ouverture pour vehicule automobile
US4246631A (en) * 1978-05-23 1981-01-20 Lucas Industries Limited Vehicle headlamp
DE2907286C2 (de) * 1979-02-24 1983-09-29 Daimler-Benz Ag, 7000 Stuttgart Streuscheibe für einen Kraftfahrzeug-Scheinwerfer
US4446511A (en) * 1980-03-14 1984-05-01 General Electric Company Automotive lamp unit
DE3018808C2 (de) * 1980-05-16 1984-04-05 Walther-Glas GmbH, 3490 Bad Driburg Verfahren zur Herstellung von Streuscheiben
EP0103374B1 (fr) * 1982-08-20 1987-05-06 LUCAS INDUSTRIES public limited company Couvercle diffuseur pour projecteurs de véhicules à moteur
DE3245141C2 (de) * 1982-12-07 1994-09-22 Bosch Gmbh Robert Nebelscheinwerfer für Kraftfahrzeuge
FR2542422B1 (fr) * 1983-03-08 1985-08-23 Cibie Projecteurs Projecteur d'automobile a glace inclinee munie d'elements optiques redresseurs

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325254A3 (en) * 1988-01-20 1990-04-25 Ichikoh Industries Limited Projector-type head lamp for vehicles
WO2005050087A1 (fr) * 2003-11-21 2005-06-02 Zumtobel Staff Gmbh Lampe a element de sortie de lumiere transparent
EP2474779A4 (fr) * 2009-09-04 2015-09-09 Stanley Electric Co Ltd Luminaire de véhicule
EP2372236A1 (fr) * 2010-03-23 2011-10-05 Hella KGaA Hueck & Co. Elément optique destiné à l'agencement dans un phare de véhicule
EP3214364A1 (fr) * 2016-03-02 2017-09-06 Valeo Vision Lentille amelioree pour dispositif d'eclairage de vehicule automobile
FR3048485A1 (fr) * 2016-03-02 2017-09-08 Valeo Vision Lentille amelioree pour dispositif d'eclairage de vehicule automobile
US10190741B2 (en) 2016-03-02 2019-01-29 Valeo Vision Lens for lighting device for motor vehicles

Also Published As

Publication number Publication date
EP0221416B1 (fr) 1995-09-27
JP2509194B2 (ja) 1996-06-19
EP0221416A3 (en) 1989-11-02
JPS62113301A (ja) 1987-05-25
US5014173A (en) 1991-05-07
US4796171A (en) 1989-01-03

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