EP2541132A3 - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

Info

Publication number
EP2541132A3
EP2541132A3 EP12172617.8A EP12172617A EP2541132A3 EP 2541132 A3 EP2541132 A3 EP 2541132A3 EP 12172617 A EP12172617 A EP 12172617A EP 2541132 A3 EP2541132 A3 EP 2541132A3
Authority
EP
European Patent Office
Prior art keywords
reflection area
light
vehicle lamp
partial reflection
reflector
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Withdrawn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
EP12172617.8A
Other languages
German (de)
French (fr)
Other versions
EP2541132A2 (en
Inventor
Kenichi Takada
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 EP2541132A2 publication Critical patent/EP2541132A2/en
Publication of EP2541132A3 publication Critical patent/EP2541132A3/en
Withdrawn legal-status Critical Current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
    • F21S41/30—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
    • F21S41/335—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with continuity 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/332—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with continuity at the junction between adjacent areas

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A vehicle lamp is provided with a projector lens 18, a light source 12a, and a reflector 14. A reflective surface 14a of the reflector 14 includes a partial reflection area 14aA and a general reflection area 14a0 other than the partial reflection area 14aA. A light distribution pattern PL0, PH0 to be formed by an irradiation light from the vehicle lamp is adapted to be formed by a reflected light on the general reflection area 14a0. The partial reflection area 14aA is configured such that a light from the light source 12a which is reflected on the partial reflection area 14aA is incident on the projector lens 18 as a diffusely reflected light.
EP12172617.8A 2011-06-27 2012-06-19 Vehicle lamp Withdrawn EP2541132A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011141954A JP5749584B2 (en) 2011-06-27 2011-06-27 Lighting fixtures for vehicles

Publications (2)

Publication Number Publication Date
EP2541132A2 EP2541132A2 (en) 2013-01-02
EP2541132A3 true EP2541132A3 (en) 2014-06-25

Family

ID=46319014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12172617.8A Withdrawn EP2541132A3 (en) 2011-06-27 2012-06-19 Vehicle lamp

Country Status (3)

Country Link
EP (1) EP2541132A3 (en)
JP (1) JP5749584B2 (en)
CN (1) CN102853358B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6101587B2 (en) 2013-07-18 2017-03-22 株式会社小糸製作所 Vehicle headlamp
DE102013215897B4 (en) * 2013-08-12 2015-05-13 Automotive Lighting Reutlingen Gmbh Method for calculating the surfaces of optical lenses
JP6981174B2 (en) * 2017-10-25 2021-12-15 トヨタ自動車株式会社 Vehicle headlight device
JP7269025B2 (en) * 2019-02-12 2023-05-08 株式会社小糸製作所 vehicle lamp

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2255625A (en) * 1991-04-20 1992-11-11 Bosch Gmbh Robert Headlight for vehicles
EP0561410A1 (en) * 1992-03-18 1993-09-22 Ichikoh Industries Limited Projector-type headlamp for vehicles
US20030189840A1 (en) * 2002-04-08 2003-10-09 Koito Manufacturing Co., Ltd. Vehicular headlamp
EP1426675A2 (en) * 2002-12-02 2004-06-09 Ichikoh Industries, Ltd. Vehicle headlamp, reflector for the vehicle headlamp, computer program for designing the reflector
US20070147062A1 (en) * 2005-12-28 2007-06-28 Koito Manufacturing Co., Ltd. Vehicle headlamp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4387157B2 (en) * 2003-10-23 2009-12-16 株式会社小糸製作所 Vehicle headlamp
CN100483013C (en) * 2004-01-09 2009-04-29 株式会社小糸制作所 Vehicular front headlamp
JP4339213B2 (en) * 2004-09-10 2009-10-07 株式会社小糸製作所 Vehicle headlamp
JP2008078001A (en) * 2006-09-22 2008-04-03 Koito Mfg Co Ltd Headlamp for automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2255625A (en) * 1991-04-20 1992-11-11 Bosch Gmbh Robert Headlight for vehicles
EP0561410A1 (en) * 1992-03-18 1993-09-22 Ichikoh Industries Limited Projector-type headlamp for vehicles
US20030189840A1 (en) * 2002-04-08 2003-10-09 Koito Manufacturing Co., Ltd. Vehicular headlamp
EP1426675A2 (en) * 2002-12-02 2004-06-09 Ichikoh Industries, Ltd. Vehicle headlamp, reflector for the vehicle headlamp, computer program for designing the reflector
US20070147062A1 (en) * 2005-12-28 2007-06-28 Koito Manufacturing Co., Ltd. Vehicle headlamp

Also Published As

Publication number Publication date
JP5749584B2 (en) 2015-07-15
CN102853358A (en) 2013-01-02
EP2541132A2 (en) 2013-01-02
CN102853358B (en) 2017-03-01
JP2013008636A (en) 2013-01-10

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