IN2014CN02633A - - Google Patents

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Publication number
IN2014CN02633A
IN2014CN02633A IN2633CHN2014A IN2014CN02633A IN 2014CN02633 A IN2014CN02633 A IN 2014CN02633A IN 2633CHN2014 A IN2633CHN2014 A IN 2633CHN2014A IN 2014CN02633 A IN2014CN02633 A IN 2014CN02633A
Authority
IN
India
Prior art keywords
phosphor layer
lens member
lens
portions
reference plane
Prior art date
Application number
Other languages
English (en)
Inventor
Andrew J Ouderkirk
Ravi K Sura
Nicholas T Gabriel
Huang Chin Hung
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of IN2014CN02633A publication Critical patent/IN2014CN02633A/en

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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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/14—Covers for frames; Frameless shades
    • F21V1/16—Covers for frames; Frameless shades characterised by the material
    • F21V1/17—Covers for frames; Frameless shades characterised by the material the material comprising photoluminescent substances
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/08—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
    • F21V3/12—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
    • 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
    • F21V5/10—Refractors for light sources comprising photoluminescent material
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • F21V7/26—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material the material comprising photoluminescent substances
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • F21V7/30—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings the coatings comprising photoluminescent substances
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0095—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ultraviolet radiation
    • 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
    • F21Y2101/00—Point-like light sources
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Led Device Packages (AREA)
  • Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
IN2633CHN2014 2011-10-14 2012-06-14 IN2014CN02633A (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161547364P 2011-10-14 2011-10-14
PCT/US2012/042367 WO2013055412A1 (en) 2011-10-14 2012-06-14 Lens assembly for remote phosphor led device

Publications (1)

Publication Number Publication Date
IN2014CN02633A true IN2014CN02633A (de) 2015-06-26

Family

ID=48082258

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2633CHN2014 IN2014CN02633A (de) 2011-10-14 2012-06-14

Country Status (9)

Country Link
US (1) US9625123B2 (de)
EP (1) EP2766656A4 (de)
JP (1) JP6041885B2 (de)
KR (1) KR20140082793A (de)
CN (1) CN103842715B (de)
BR (1) BR112014008846A2 (de)
IN (1) IN2014CN02633A (de)
TW (1) TW201316567A (de)
WO (1) WO2013055412A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104541382B (zh) 2012-06-01 2017-05-17 3M创新有限公司 使用远程荧光粉led和直接发射led组合的混合灯泡
US9559272B2 (en) 2012-09-13 2017-01-31 3M Innovative Properties Company Efficient lighting system with wide color range
US9863595B2 (en) 2013-08-28 2018-01-09 Sharp Kabushiki Kaisha Light-emitting unit with optical plate reflecting excitation light and transmitting fluorescent light, and light-emitting device, illumination device, and vehicle headlight including the unit
JP6258083B2 (ja) * 2013-08-28 2018-01-10 シャープ株式会社 発光ユニット、発光装置、照明装置および車両用前照灯
CN103615672B (zh) * 2013-10-28 2019-09-10 杨毅 光源
US20150267908A1 (en) * 2014-03-18 2015-09-24 GE Lighting Solutions, LLC Integration of light emitting diode (led) optical reflectors with multilayer dielectric thin film coating into heat dissipation paths
US10741735B2 (en) 2014-06-02 2020-08-11 3M Innovative Properties Company LED with remote phosphor and shell reflector
CN105222072A (zh) * 2014-10-24 2016-01-06 成都世纪光合作用科技有限公司 远程大功率可调光照明装置
DE102015001723A1 (de) 2015-02-05 2016-08-11 Sergey Dyukin Die Methode der Verbesserung der Charakteristiken von Leuchtgeräten mit einer Stirnseitenbeleuchtung des Lichtleiters, die den Luminophor beinhalten, der mit Halbleiterstrukturen beleuchtet wird.
DE102015213858A1 (de) 2015-07-22 2017-01-26 Osram Gmbh Beleuchtungsvorrichtung
FR3054023B1 (fr) * 2016-07-13 2019-06-28 Valeo Vision Dispositif de signalisation pour vehicule automobile, et feu de signalisation muni d’un tel dispositif
WO2019240993A1 (en) * 2018-06-13 2019-12-19 Nthdegree Technologies Worldwide Inc. Printed leds and wavelength conversion area on objects to provide optical security feature
CN111509113B (zh) * 2020-03-13 2021-04-27 纳晶科技股份有限公司 一种led封装结构及其发光方法、发光装置
KR20210136720A (ko) * 2020-05-08 2021-11-17 삼성전자주식회사 발광 장치

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5882774A (en) 1993-12-21 1999-03-16 Minnesota Mining And Manufacturing Company Optical film
US6967778B1 (en) 1998-01-13 2005-11-22 3M Innovative Properties Co. Optical film with sharpened bandedge
US6808658B2 (en) 1998-01-13 2004-10-26 3M Innovative Properties Company Method for making texture multilayer optical films
JP3640153B2 (ja) * 1999-11-18 2005-04-20 松下電工株式会社 照明光源
CA2437059A1 (en) * 2001-02-21 2002-09-26 Wavien, Inc. Illumination system using filament lamps
EP1930959B1 (de) 2002-08-30 2019-05-08 GE Lighting Solutions, LLC Beschichtete Leuchtdiode mit erhöhter Effizienz
US7245072B2 (en) * 2003-01-27 2007-07-17 3M Innovative Properties Company Phosphor based light sources having a polymeric long pass reflector
US20040159900A1 (en) * 2003-01-27 2004-08-19 3M Innovative Properties Company Phosphor based light sources having front illumination
CN1742390A (zh) * 2003-01-27 2006-03-01 3M创新有限公司 具有非平面短通反射器的基于荧光粉的光源及其制造方法
US7091653B2 (en) 2003-01-27 2006-08-15 3M Innovative Properties Company Phosphor based light sources having a non-planar long pass reflector
TW200520241A (en) 2003-12-02 2005-06-16 3M Innovative Properties Co Methods of making phosphor based light sources having an interference reflector
US20060291186A1 (en) * 2005-06-09 2006-12-28 Oryon Technologies, Llc Electroluminescent lamp with graphical overlay
JP2007081234A (ja) * 2005-09-15 2007-03-29 Toyoda Gosei Co Ltd 照明装置
KR100726970B1 (ko) * 2005-12-23 2007-06-14 한국광기술원 다이크로익 필터를 이용한 발광 장치
KR100804735B1 (ko) * 2006-03-23 2008-02-19 연세대학교 산학협력단 프레넬 렌즈 및 이를 이용한 ｌｅｄ 조명 장치
US7703945B2 (en) 2006-06-27 2010-04-27 Cree, Inc. Efficient emitting LED package and method for efficiently emitting light
US7330314B1 (en) 2007-02-28 2008-02-12 Corning Incorporated Color combiner for solid-state light sources
US7621677B2 (en) 2007-08-21 2009-11-24 Ylx Corp. Optical coupler for a light emitting device with enhanced output brightness
DE102007059548A1 (de) * 2007-09-28 2009-04-02 Osram Opto Semiconductors Gmbh Optoelektronisches Bauelement und Auskoppellinse für ein optoelektronisches Bauelement
JP5211667B2 (ja) * 2007-12-07 2013-06-12 ソニー株式会社 照明装置及び表示装置
WO2009134433A2 (en) 2008-05-02 2009-11-05 Light Prescriptions Innovators, Llc Remote-phosphor led downlight
US8858032B2 (en) * 2008-10-24 2014-10-14 Cree, Inc. Lighting device, heat transfer structure and heat transfer element
US8169135B2 (en) * 2008-12-17 2012-05-01 Lednovation, Inc. Semiconductor lighting device with wavelength conversion on back-transferred light path
JP5607399B2 (ja) * 2009-03-24 2014-10-15 株式会社半導体エネルギー研究所 Ｓｏｉ基板の作製方法
JP2012526347A (ja) 2009-05-07 2012-10-25 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 蛍燐光体及び二色性のフィルターを備えたライティングデバイス
US20110012147A1 (en) 2009-07-15 2011-01-20 Koninklijke Philips Electronics N.V. Wavelength-converted semiconductor light emitting device including a filter and a scattering structure
US8118454B2 (en) 2009-12-02 2012-02-21 Abl Ip Holding Llc Solid state lighting system with optic providing occluded remote phosphor
EP2524165B1 (de) * 2010-01-15 2020-04-15 Express Imaging Systems, LLC Vorrichtung, verfahren zum ändern der lichtquellenfarbtemperatur mit reduzierten optischen filtrierungsverlusten
US8104908B2 (en) * 2010-03-04 2012-01-31 Xicato, Inc. Efficient LED-based illumination module with high color rendering index
TWI476959B (zh) * 2010-04-11 2015-03-11 Achrolux Inc 轉移均勻螢光層至一物件上之方法及所製得之發光結構
CN103038568A (zh) 2010-04-16 2013-04-10 弗莱克斯照明第二有限责任公司 包括膜基光导的前照明装置
CN103299422B (zh) 2010-12-29 2016-11-02 3M创新有限公司 具有宽带输出和可控颜色的远程荧光粉led装置
KR101913878B1 (ko) 2010-12-29 2018-10-31 쓰리엠 이노베이티브 프로퍼티즈 컴파니 원격 인광체 ｌｅｄ 소자를 위한 인광체 반사기 조립체

Also Published As

Publication number Publication date
KR20140082793A (ko) 2014-07-02
EP2766656A4 (de) 2015-06-17
EP2766656A1 (de) 2014-08-20
CN103842715B (zh) 2016-11-23
TW201316567A (zh) 2013-04-16
US20140218938A1 (en) 2014-08-07
JP2014528655A (ja) 2014-10-27
US9625123B2 (en) 2017-04-18
JP6041885B2 (ja) 2016-12-14
WO2013055412A1 (en) 2013-04-18
CN103842715A (zh) 2014-06-04
BR112014008846A2 (pt) 2017-04-25

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