EP0937942A3 - Projection type motor vehicle headlamp - Google Patents

Projection type motor vehicle headlamp Download PDF

Info

Publication number
EP0937942A3
EP0937942A3 EP98121941A EP98121941A EP0937942A3 EP 0937942 A3 EP0937942 A3 EP 0937942A3 EP 98121941 A EP98121941 A EP 98121941A EP 98121941 A EP98121941 A EP 98121941A EP 0937942 A3 EP0937942 A3 EP 0937942A3
Authority
EP
European Patent Office
Prior art keywords
reflector
light
generated
motor vehicle
projection type
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
EP98121941A
Other languages
German (de)
French (fr)
Other versions
EP0937942B1 (en
EP0937942A2 (en
Inventor
Heike Eichler
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.)
Marelli Automotive Lighting Reutlingen Germany 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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0937942A2 publication Critical patent/EP0937942A2/en
Publication of EP0937942A3 publication Critical patent/EP0937942A3/en
Application granted granted Critical
Publication of EP0937942B1 publication Critical patent/EP0937942B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
    • F21S41/645—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices by electro-optic means, e.g. liquid crystal or electrochromic devices
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

Der Scheinwerfer weist eine Lichtquelle (12), einen Reflektor (10), eine Linse (16), durch die vom Reflektor (10) reflektiertes Licht hindurchtritt, und zwei Blendenvorrichtungen (20,30) zwischen dem Reflektor (10) und der Linse (16) auf. Die beiden Blendenvorrichtungen (20,30) sind zwischen einer ersten Stellung für Abblendlicht und einer zweiten Stellung für Fernlichtt bewegbar. In der ersten Stellung wird durch eine erste Blendenvorrichtung (20) ein Teil des vom Reflektor (10) reflektierten Lichts abgeschirmt und eine Helldunkelgrenze des Abblendlichtbündels erzeugt und durch eine zweite Blendenvorrichtung (30) wird ein Teil des an der ersten Blendenvorrichtung (20) vorbeigelangenden Lichts abgeschirmt um die vom Abblendlichtbündel erzeugten maximalen Beleuchtungsstärkewerte zu reduzieren. In der zweiten Stellung sind die beiden Blendenvorrichtungen (20,30) aus dem Strahlengang des vom Reflektor (10) reflektierten Lichts entfernt und aus dem Scheinwerfer tritt ein Fernichtbündel mit großer Reichweite aus, durch das hohe maximale Beleuchtungsstärkewerte erzeugt werden.

Figure 00000001
The headlight has a light source (12), a reflector (10), a lens (16) through which light reflected by the reflector (10) passes, and two diaphragm devices (20, 30) between the reflector (10) and the lens ( 16) on. The two diaphragm devices (20, 30) can be moved between a first position for low beam and a second position for high beam. In the first position, a portion of the light reflected by the reflector (10) is shielded by a first aperture device (20) and a light-dark boundary of the low beam is generated, and a portion of the light passing the first aperture device (20) is generated by a second aperture device (30) shielded to reduce the maximum illuminance values generated by the low beam. In the second position, the two diaphragm devices (20, 30) are removed from the beam path of the light reflected by the reflector (10) and a long-range light beam emerges from the headlight, through which high maximum illuminance values are generated.
Figure 00000001
EP98121941A 1998-02-20 1998-11-19 Projection type motor vehicle headlamp Expired - Lifetime EP0937942B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19807153A DE19807153A1 (en) 1998-02-20 1998-02-20 Headlights for vehicles according to the projection principle
DE19807153 1998-02-20

Publications (3)

Publication Number Publication Date
EP0937942A2 EP0937942A2 (en) 1999-08-25
EP0937942A3 true EP0937942A3 (en) 2001-10-24
EP0937942B1 EP0937942B1 (en) 2007-06-27

Family

ID=7858401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121941A Expired - Lifetime EP0937942B1 (en) 1998-02-20 1998-11-19 Projection type motor vehicle headlamp

Country Status (4)

Country Link
US (1) US6312147B2 (en)
EP (1) EP0937942B1 (en)
JP (1) JP4460666B2 (en)
DE (2) DE19807153A1 (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933414B4 (en) * 1999-07-16 2005-02-03 Automotive Lighting Reutlingen Gmbh Headlight for motor vehicles
JP2001110211A (en) * 1999-10-12 2001-04-20 Koito Mfg Co Ltd Head lamp for vehicle
FR2809797B1 (en) * 2000-05-31 2002-08-23 Valeo Vision ELLIPTICAL PROJECTOR FOR INFRARED MOTOR VEHICLE WITH REDUCED SIZE
FR2811408B1 (en) † 2000-07-07 2002-10-18 Valeo Vision ELLIPTICAL PROJECTOR IN PARTICULAR FOR IMPROVED LOW PHOTOMETRY ROAD LIGHTING
JP2002184219A (en) * 2000-12-18 2002-06-28 Koito Mfg Co Ltd Vehicle head light
DE10125460C2 (en) * 2001-05-25 2003-06-12 Hella Kg Hueck & Co Motor vehicle headlights based on the projection principle with an adjustable aperture arrangement
EP1283390B1 (en) 2001-08-10 2008-10-22 Ichikoh Industries, Ltd. Two-light headlamp
DE10216177A1 (en) * 2002-04-12 2003-11-13 Hella Kg Hueck & Co Projecting module for motor vehicle headlamp has reflector with source of light and lens set up in beam alignment with it and high-beam screen for lens
US20040202004A1 (en) * 2003-04-09 2004-10-14 Guide Corporation, A Delaware Corporation Bifunctional headlamp having a rotating shield with integral actuator
US20040213010A1 (en) * 2003-04-22 2004-10-28 Guide Corporation Bi-functional headlamp having a linear shifting sleeve with integral actuator
US7036969B2 (en) * 2003-12-04 2006-05-02 Guide Corporation Adverse weather headlamp system
DE10361234A1 (en) * 2003-12-24 2005-07-28 Hella Kgaa Hueck & Co. Automobile headlight has single light bulb with motor driven screening unit to prove dipped and full beam operation
US20050152151A1 (en) * 2004-01-14 2005-07-14 Guide Corporation Adverse weather automatic sign light shield
FR2866413B1 (en) * 2004-02-13 2006-06-30 Valeo Vision ELLIPTICAL PROJECTOR EQUIPPED WITH A SCREEN OF OCCULTATION IN TRANSPARENT MATTER.
AT502161B1 (en) * 2004-03-02 2007-05-15 Zizala Lichtsysteme Gmbh VEHICLE HEADLIGHTS FOR CURVED LIGHT
WO2005100088A2 (en) 2004-04-08 2005-10-27 Federal-Mogul Corporation Projector lamp headlight with chromatic aberration correction
FR2868828B1 (en) * 2004-04-09 2007-03-16 Valeo Vision Sa LUMINOUS PROJECTOR FOR A MOTOR VEHICLE WITH A CUT-OFF BEAM, AND A CACHE ASSEMBLY FOR SUCH A PROJECTOR
DE102004034838B4 (en) * 2004-07-19 2015-07-23 Daimler Ag Vehicle headlight system with variable beam shape
FR2873788B1 (en) * 2004-07-30 2006-10-13 Valeo Vision Sa ELLIPTICAL OPTICAL MODULE WITH OCCULTOR FOR MOTOR VEHICLE
JP2006182100A (en) * 2004-12-27 2006-07-13 Koito Mfg Co Ltd Vehicular lighting system
US7140759B1 (en) * 2005-02-01 2006-11-28 Jen Mao Wang Light beam adjusting device for vehicle
JP4527623B2 (en) * 2005-07-21 2010-08-18 株式会社小糸製作所 Vehicle lighting
US7357545B2 (en) * 2005-08-10 2008-04-15 Visteon Global Technologies, Inc. Multi-focal lens for bi-functional headlamp
US7410282B2 (en) * 2005-10-25 2008-08-12 Visteon Global Technologies, Inc. Bi-functional headlight module
KR101358702B1 (en) * 2006-04-21 2014-02-07 코닌클리케 필립스 엔.브이. Lamp unit for an adaptive front lighting system for a vehicle
JP4389895B2 (en) * 2006-04-21 2009-12-24 市光工業株式会社 Vehicle headlamp
JP4749968B2 (en) * 2006-07-31 2011-08-17 株式会社小糸製作所 Vehicle headlamp
US7775699B2 (en) * 2006-07-31 2010-08-17 Visteon Global Technologies, Inc. Projector lamp having enhanced low to high beam contrast ratio
JP2008177024A (en) * 2007-01-18 2008-07-31 Ichikoh Ind Ltd Headlamp for vehicle
JP4743124B2 (en) * 2007-01-18 2011-08-10 市光工業株式会社 Vehicle headlamp
DE102008025463A1 (en) * 2008-05-28 2009-12-10 Delvis Gmbh Radiating unit i.e. Xenon-lamp, for head light i.e. motor vehicle head light, has shadowing devices superimposed to radiating surfaces, where shadowing devices are controlled for variable optical shadowing of radiating surfaces
DE102009027711A1 (en) 2008-08-13 2010-04-01 Saia-Burgess Murten Ag Adjusting device for adjusting screen in headlamp of motor vehicle, has three tolerance reduction units reducing tolerances in clutch between drive shaft and adjusting component, where drive shaft is provided in electric drive
JP5395410B2 (en) * 2008-11-19 2014-01-22 株式会社小糸製作所 Vehicle headlamp
AT509830B1 (en) * 2010-04-22 2012-07-15 Zizala Lichtsysteme Gmbh HEADLIGHTS FOR VEHICLES
KR20120061682A (en) * 2010-12-03 2012-06-13 현대자동차주식회사 Beam pattern changing sturcture of head lamp
CN102829416B (en) * 2011-06-14 2015-07-22 财团法人工业技术研究院 Lamp light source of light-emitting diode with multiple light shape output
JP5454526B2 (en) * 2011-07-25 2014-03-26 トヨタ自動車株式会社 Vehicle light distribution control device and method
US9108566B2 (en) * 2013-03-14 2015-08-18 Federal-Mogul Corporation Multi-pattern headlamp assembly and system
FR3022327B1 (en) * 2014-06-16 2016-06-10 Valeo Vision ROTARY LIGHTING AND / OR SIGNALING MODULE
KR101916724B1 (en) * 2016-12-27 2018-11-08 엘지전자 주식회사 Lamp for vehicle and method for controlling the same
CN110497839A (en) * 2019-08-15 2019-11-26 广汽蔚来新能源汽车科技有限公司 Automobile and its car light

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002576A1 (en) * 1990-01-30 1991-08-01 Bosch Gmbh Robert HEADLIGHTS FOR MOTOR VEHICLES
DE4102586A1 (en) * 1990-01-31 1991-08-01 Honda Motor Co Ltd HEADLIGHT
DE19537838A1 (en) * 1995-10-11 1997-04-17 Bosch Gmbh Robert Motor vehicle headlamp design

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5161875A (en) * 1989-11-28 1992-11-10 Stanley Electric Company, Ltd. Head lamp for cornering operation
JP2765643B2 (en) * 1992-06-03 1998-06-18 株式会社小糸製作所 Projection type automotive headlamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002576A1 (en) * 1990-01-30 1991-08-01 Bosch Gmbh Robert HEADLIGHTS FOR MOTOR VEHICLES
DE4102586A1 (en) * 1990-01-31 1991-08-01 Honda Motor Co Ltd HEADLIGHT
DE19537838A1 (en) * 1995-10-11 1997-04-17 Bosch Gmbh Robert Motor vehicle headlamp design

Also Published As

Publication number Publication date
EP0937942B1 (en) 2007-06-27
US20010021113A1 (en) 2001-09-13
EP0937942A2 (en) 1999-08-25
US6312147B2 (en) 2001-11-06
JP4460666B2 (en) 2010-05-12
DE59814042D1 (en) 2007-08-09
JPH11283405A (en) 1999-10-15
DE19807153A1 (en) 1999-08-26

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