EP2719941B1 - Vehicular headlamp comprising a projection lens - Google Patents

Vehicular headlamp comprising a projection lens Download PDF

Info

Publication number
EP2719941B1
EP2719941B1 EP13188294.6A EP13188294A EP2719941B1 EP 2719941 B1 EP2719941 B1 EP 2719941B1 EP 13188294 A EP13188294 A EP 13188294A EP 2719941 B1 EP2719941 B1 EP 2719941B1
Authority
EP
European Patent Office
Prior art keywords
light
projection lens
irradiation surface
light emitting
vehicular headlamp
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.)
Not-in-force
Application number
EP13188294.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2719941A1 (en
Inventor
Hidetada Tanaka
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.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
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 Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Publication of EP2719941A1 publication Critical patent/EP2719941A1/en
Application granted granted Critical
Publication of EP2719941B1 publication Critical patent/EP2719941B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/143Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/151Light emitting diodes [LED] arranged in one or more lines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25Projection lenses
    • F21S41/255Lenses with a front view of circular or truncated circular outline
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32Optical layout thereof
    • F21S41/321Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]
EP13188294.6A 2012-10-12 2013-10-11 Vehicular headlamp comprising a projection lens Not-in-force EP2719941B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012226737A JP6095937B2 (ja) 2012-10-12 2012-10-12 車輌用前照灯

Publications (2)

Publication Number Publication Date
EP2719941A1 EP2719941A1 (en) 2014-04-16
EP2719941B1 true EP2719941B1 (en) 2019-03-13

Family

ID=49356254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13188294.6A Not-in-force EP2719941B1 (en) 2012-10-12 2013-10-11 Vehicular headlamp comprising a projection lens

Country Status (3)

Country Link
EP (1) EP2719941B1 (ja)
JP (1) JP6095937B2 (ja)
CN (1) CN103727475B (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6421488B2 (ja) * 2014-08-01 2018-11-14 スタンレー電気株式会社 車両用灯具
JP6376453B2 (ja) * 2014-08-22 2018-08-22 スタンレー電気株式会社 レンズ体及び車両用灯具
JP6347178B2 (ja) * 2014-08-25 2018-06-27 スタンレー電気株式会社 レンズ体及び車両用灯具
JP6376450B2 (ja) * 2014-08-01 2018-08-22 スタンレー電気株式会社 レンズ体及び車両用灯具
JP6415242B2 (ja) * 2014-10-22 2018-10-31 株式会社小糸製作所 車両用灯具
JP6604030B2 (ja) * 2015-05-13 2019-11-13 市光工業株式会社 車両用灯具
JP6693052B2 (ja) * 2015-06-02 2020-05-13 市光工業株式会社 車両用灯具
JP2018120802A (ja) * 2017-01-26 2018-08-02 本田技研工業株式会社 車両用照明装置
JP7015701B2 (ja) * 2018-01-31 2022-02-03 株式会社小糸製作所 車両用灯具
JP6564497B2 (ja) * 2018-05-25 2019-08-21 スタンレー電気株式会社 レンズ連結体及び車両用灯具
CN112483990B (zh) * 2019-09-12 2022-04-15 比亚迪股份有限公司 一种前照灯装置及车辆

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417301A (en) * 1987-07-11 1989-01-20 Koito Mfg Co Ltd Head lamp for vehicle
US4857794A (en) * 1986-09-03 1989-08-15 Koito Seisakusho Co., Ltd. Single-filament headlamp unit capable of throwing both upper and lower beams
JP2003059313A (ja) * 2001-08-15 2003-02-28 Koito Mfg Co Ltd 車両用灯具
JP2003100114A (ja) * 2001-09-19 2003-04-04 Koito Mfg Co Ltd 車両用灯具
US7281833B2 (en) * 2002-10-18 2007-10-16 Ichikoh Industries, Ltd. LED vehicle lamp including reflector with paraboloidal sections
FR2853392B1 (fr) * 2003-04-04 2006-06-16 Sli Miniature Lighting Sa Feu arriere, en particulier feu stop pour vehicule automobile
JP2006049189A (ja) * 2004-08-06 2006-02-16 Koito Mfg Co Ltd 車両用前照灯
CN2829103Y (zh) * 2005-05-09 2006-10-18 葛世潮 高效率发光二极管
JP2007213877A (ja) 2006-02-08 2007-08-23 Koito Mfg Co Ltd 車両用前照灯
JP4795094B2 (ja) * 2006-04-24 2011-10-19 株式会社小糸製作所 車両用前照灯
FR2928717B1 (fr) * 2008-03-11 2010-03-26 Valeo Vision Dispositif d'eclairage pour vehicule automobile.
JP5457219B2 (ja) * 2010-02-16 2014-04-02 株式会社小糸製作所 光学ユニット
JP2011249056A (ja) * 2010-05-25 2011-12-08 Stanley Electric Co Ltd 二輪車用前照灯
EP2500628B1 (en) * 2011-03-14 2020-05-06 Stanley Electric Co., Ltd. Vehicle headlamp
JP5692520B2 (ja) * 2011-03-14 2015-04-01 スタンレー電気株式会社 灯具ユニット
DE102011109434A1 (de) * 2011-08-04 2012-06-06 Daimler Ag Verfahren und Beleuchtungsvorrichtung zum Konstanthalten einer Lichtemissionsrichtung eines Leuchtmoduls eines Fahrzeugs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN103727475A (zh) 2014-04-16
EP2719941A1 (en) 2014-04-16
CN103727475B (zh) 2017-04-12
JP2014078463A (ja) 2014-05-01
JP6095937B2 (ja) 2017-03-15

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