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EP2495489A3 - LED traffic signal and optical element therefor - Google Patents

LED traffic signal and optical element therefor Download PDF

Info

Publication number
EP2495489A3
EP2495489A3 EP12157934.6A EP12157934A EP2495489A3 EP 2495489 A3 EP2495489 A3 EP 2495489A3 EP 12157934 A EP12157934 A EP 12157934A EP 2495489 A3 EP2495489 A3 EP 2495489A3
Authority
EP
European Patent Office
Prior art keywords
optical element
traffic signal
lighting device
light source
led traffic
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Withdrawn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
EP12157934.6A
Other languages
German (de)
French (fr)
Other versions
EP2495489A2 (en
Inventor
Eden Dubuc
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.)
Current Lighting Solutions LLC
Original Assignee
GE Lighting Solutions LLC
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 US13/040,874 external-priority patent/US8668351B2/en
Application filed by GE Lighting Solutions LLC filed Critical GE Lighting Solutions LLC
Priority to EP14196410.6A priority Critical patent/EP2881654A3/en
Publication of EP2495489A2 publication Critical patent/EP2495489A2/en
Publication of EP2495489A3 publication Critical patent/EP2495489A3/en
Withdrawn legal-status Critical Current

Links

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
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • 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
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • 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
    • F21V7/00—Reflectors for light sources
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Landscapes

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

Abstract

A lighting device includes a housing (28,68) having an open end and a geometrical axis and at least one light source (12,52) disposed along an optical axis. The lighting device further includes an outer optical element (10,50) having a focal point and closing the open end of the housing, the optical element comprising a converging outer surface and a diverging inner surface that cooperates with the light coming from the inner optical element. Additionally, the lighting device includes an inner optical element between the light source and the outer optical element, the inner optical element redirecting light from a light source that is offset from the focal point toward the outer optical element.
EP12157934.6A 2011-03-04 2012-03-02 LED traffic signal and optical element therefor Withdrawn EP2495489A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14196410.6A EP2881654A3 (en) 2011-03-04 2012-03-02 Lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/040,874 US8668351B2 (en) 2008-09-04 2011-03-04 LED traffic signal and optical element therefor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP14196410.6A Division EP2881654A3 (en) 2011-03-04 2012-03-02 Lighting device

Publications (2)

Publication Number Publication Date
EP2495489A2 EP2495489A2 (en) 2012-09-05
EP2495489A3 true EP2495489A3 (en) 2014-06-04

Family

ID=45774097

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12157934.6A Withdrawn EP2495489A3 (en) 2011-03-04 2012-03-02 LED traffic signal and optical element therefor
EP14196410.6A Withdrawn EP2881654A3 (en) 2011-03-04 2012-03-02 Lighting device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14196410.6A Withdrawn EP2881654A3 (en) 2011-03-04 2012-03-02 Lighting device

Country Status (2)

Country Link
EP (2) EP2495489A3 (en)
CN (2) CN102679207A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011054233B4 (en) * 2011-10-06 2019-06-19 HELLA GmbH & Co. KGaA Transformation optics assembly
CN103343910A (en) * 2013-07-25 2013-10-09 江西量一光电科技有限公司 LED bulb lamp
CN105371231A (en) * 2014-09-01 2016-03-02 鸿富锦精密工业（深圳）有限公司 Lighting device
CN106523980B (en) * 2015-09-11 2020-09-25 上海三思电子工程有限公司 LED signal lamp

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB157070A (en) * 1920-01-09 1921-12-22 Mckenzie Holland And Westingho Improvements in light projecting apparatus
DE4329332A1 (en) * 1992-09-01 1994-03-03 Koito Mfg Co Ltd Projection type headlamp that has reduced color edge zones
GB2329011A (en) * 1997-09-04 1999-03-10 Howells Railway Products Limit Light comprising a plurality of LEDs
US20020034081A1 (en) * 2000-09-18 2002-03-21 Koito Manufacturing Co., Ltd. Vehicle lamp
EP1302719A1 (en) * 2001-10-15 2003-04-16 Honda Giken Kogyo Kabushiki Kaisha Projector headlamp
WO2010028239A2 (en) * 2008-09-04 2010-03-11 Lumination Llc Led traffic signal and optical element therefor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864064B1 (en) 1996-10-16 2002-12-04 Koninklijke Philips Electronics N.V. Signal lamp with leds
AT409805B (en) * 1999-12-09 2002-11-25 Swarco Futurit Verkehrssignals LEDS-SIGNAL OPTICS
US6547423B2 (en) * 2000-12-22 2003-04-15 Koninklijke Phillips Electronics N.V. LED collimation optics with improved performance and reduced size
US6981784B2 (en) * 2002-05-30 2006-01-03 Gelcore, Llc Side projecting LED signal
US20050286145A1 (en) * 2004-06-25 2005-12-29 Swarco Futurit Verkehrssignalsysteme Ges.M.B.H. Invention concerning a condensor lens
CN100507610C (en) * 2006-05-29 2009-07-01 财团法人工业技术研究院 Leaded light lens and luminous diode packaging structure having same
CN201103852Y (en) * 2007-09-12 2008-08-20 张红现 Railway signal lamp head
CN101556004A (en) * 2008-04-07 2009-10-14 深圳市海洋王照明科技股份有限公司 Projection lamp and lampshade thereof
DE102008020171B4 (en) * 2008-04-22 2010-08-05 Trw Automotive Electronics & Components Gmbh Optical sensor device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB157070A (en) * 1920-01-09 1921-12-22 Mckenzie Holland And Westingho Improvements in light projecting apparatus
DE4329332A1 (en) * 1992-09-01 1994-03-03 Koito Mfg Co Ltd Projection type headlamp that has reduced color edge zones
GB2329011A (en) * 1997-09-04 1999-03-10 Howells Railway Products Limit Light comprising a plurality of LEDs
US20020034081A1 (en) * 2000-09-18 2002-03-21 Koito Manufacturing Co., Ltd. Vehicle lamp
EP1302719A1 (en) * 2001-10-15 2003-04-16 Honda Giken Kogyo Kabushiki Kaisha Projector headlamp
WO2010028239A2 (en) * 2008-09-04 2010-03-11 Lumination Llc Led traffic signal and optical element therefor

Also Published As

Publication number Publication date
EP2495489A2 (en) 2012-09-05
CN105757469A (en) 2016-07-13
CN102679207A (en) 2012-09-19
EP2881654A2 (en) 2015-06-10
EP2881654A3 (en) 2015-07-15

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