EP2008018A2 - Dispositif et procede d'eclairage - Google Patents

Dispositif et procede d'eclairage

Info

Publication number
EP2008018A2
EP2008018A2 EP07755653A EP07755653A EP2008018A2 EP 2008018 A2 EP2008018 A2 EP 2008018A2 EP 07755653 A EP07755653 A EP 07755653A EP 07755653 A EP07755653 A EP 07755653A EP 2008018 A2 EP2008018 A2 EP 2008018A2
Authority
EP
European Patent Office
Prior art keywords
group
solid state
state light
point
light emitters
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.)
Ceased
Application number
EP07755653A
Other languages
German (de)
English (en)
Other versions
EP2008018A4 (fr
Inventor
Antony Paul Van De Ven
Gerald H. Negley
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.)
Cree Lighting USA LLC
Original Assignee
Cree LED Lighting Solutions Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38625563&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2008018(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US11/566,440 external-priority patent/US7213940B1/en
Application filed by Cree LED Lighting Solutions Inc filed Critical Cree LED Lighting Solutions Inc
Publication of EP2008018A2 publication Critical patent/EP2008018A2/fr
Publication of EP2008018A4 publication Critical patent/EP2008018A4/fr
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/62—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using mixing chambers, e.g. housings with reflective walls
    • 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]

Definitions

  • CRI Ra Color reproduction is typically measured using the Color Rendering Index (CRT).
  • CRI Ra is a relative measurement of how the color rendition of an illumination system compares to that of a reference illuminator (light source). For color temperatures below 5,000 K, a blackbody radiator is used, and for color temperatures above 5,000 K, a series of spectra defined by the CIE (Commission International de I'Eclairage) are used.
  • CRI Ra is the average of the differences in the shift in surface color of an object when lit by a particular lamp, relative to the surface color of the object when illuminated by the reference light source.
  • Luminescent materials can be categorized as being down-converting, i.e., a material which converts photons to a lower energy level (longer wavelength) or up-converting, i.e., a material which converts photons to a higher energy level (shorter wavelength).
  • a lighting device comprising: a first group of light emitting diodes; a first group of lumiphors; and a second group of light emitting diodes; at least one power line directly or switchably electrically connected to the lighting device, wherein: each of the first group of light emitting diodes, if illuminated, would emit light having a peak wavelength in the range of from 430 nm to 480 nm; each of the first group of lumiphors, if excited, would emit light having a dominant wavelength in the range of from about 555 nm to about 585 nm; each of the second group of light emitting diodes, if illuminated, would emit light having a dominant wavelength in the range of from 600 nm to 630 nm; and if power is supplied to each of the one or more power lines (e.g., by inserting into a standard 120 AC receptacle one or more power plugs which are electrically connected to one or more respective power lines),
  • the device can include additional 430 nm to 480 nm light emitting diodes which are not within the first group of light emitting diodes, and/or the device can include additional 555 nm to 585 nm lumiphors which are not within the first group of lumiphors, and/or the device can include additional 600 nm to 630 nm light emitting diodes which are not within the second group of light emitting diodes, wherein if any combination of such additional light emtting diodes were illuminated in addition to all of the light emitting diodes in the first group of light emitting diodes, all of the lumiphors in the first group of lumiphors and all of the light emitting diodes in the second group of light emitting diodes, would produce combined light having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is not within 10 MacAdam ellipses (or within 20 MacAdam ellipses
  • a lighting device comprising: a first group of light emitting diodes; a first group of lumiphors; a second group of light emitting diodes; and at least one power line directly or switchably electrically connected to the lighting device, wherein: each of the first group of light emitting diodes, if illuminated, would emit light having a peak wavelength in the range of from 430 nm to 480 nm; each of the first group of lumiphors, if excited, would emit light having a dominant wavelength in the range of from about 555 nm to about 585 nm; each of the second group of light emitting diodes, if illuminated, would emit light having a dominant wavelength in the range of from 600 run to 630 nm; and if power is supplied to each of the at least one power line, a mixture of light emitted from the first group of light emitting diodes, from the first group of lumiphors and from the second group of light emitting diodes
  • the device can include additional 430 ran to 480 nm light emitting diodes which are not connected to the at least one power line, and/or the device can include additional 600 nm to 630 nm light emitting diodes which are not connected to the at least one power line.
  • the first group of light emitting diodes consists of all of the 430 nm to 480 nm light emitting diodes in the device
  • the first group of lumiphors consists of all of the 555 nm to 585 nm lumiphors in the device
  • the second group of light emitting diodes consists of all of the 600 nm to 630 nm light emitting diodes in the device.
  • the device can include additional 430 nm to 480 nm light emitting diodes which are not connected to the at least one power line, and/or the device can include additional 600 run to 630 run light emitting diodes which are not connected to the at least one power line.
  • the lighting device can include additional 430 nm to 480 nm light emitting diodes which are not connected to any of the power lines (or are not connected to the power line) in the device, and in which, if such additional light emitting diodes were illuminated in addition to all of the light emitting diodes connected to the at least one power line, the combined light, in the absence of any additional light, would have x, y color coordinates which are not within the area on a 1931 CIE Chromaticity Diagram enclosed by the first, second, third, fourth and fifth line segments defined above.
  • Fig. 3 shows an enlarged portion of the 1976 Chromaticity Diagram, in order to show the blackbody locus in detail.
  • the one or more luminescent materials can be any desired luminescent material.
  • the one or more luminescent materials can be down-converting or up-converting, or can include a combination of both types.
  • the one or more luminescent materials can be selected from among phosphors, scintillators, day glow tapes, inks which glow in the visible spectrum upon illumination with ultraviolet light, etc.
  • two or more lurniphors can be provided, two or more of the lumiphors being spaced from each other, as described in U.S. Patent Application No. 60/761,310, filed on January 23, 2006, entitled "Shifting Spectral Content in LEDs by Spatially Separating Lumiphor Films" (inventors: Gerald H. Negley and

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

L'invention concerne un dispositif d'éclairage comprenant un premier groupe et un second groupe d'émetteurs de lumière à l'état solide. Ce dispositif émet de la lumière présentant une longueur d'onde respectivement comprise dans une plage allant de 430 nm à 480 nm et dans une plage allant de 600 nm à 630 nm, et comprend un premier groupe de lumiphores émettant de la lumière présentant une longueur d'onde dominante située dans la plage allant de 555 nm à 585 nm. Dans certains modes de réalisation, si un courant est fourni à la ligne électrique, une combinaison de (1) lumière sortant du dispositif d'éclairage émise par le premier groupe d'émetteurs et (2) lumière sortant du dispositif d'éclairage émise par le premier groupe de lumiphores produirait, en l'absence d'une lumière complémentaire quelconque, un sous-mélange de lumière présentant des coordonnées de couleur x et y comprises à l'intérieur d'une zone d'un diagramme de chromaticité CIE 1931 défini par des points présentant les coordonnées suivantes: (0.32, 0.40), (0.36, 0.48), (0.43, 0.45), (0.42, 0.42), (0.36, 0.38). L'invention concerne également un procédé d'éclairage associé.
EP07755653A 2006-04-18 2007-04-18 Dispositif et procede d'eclairage Ceased EP2008018A4 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US79285906P 2006-04-18 2006-04-18
US79352406P 2006-04-20 2006-04-20
US86813406P 2006-12-01 2006-12-01
US11/566,440 US7213940B1 (en) 2005-12-21 2006-12-04 Lighting device and lighting method
PCT/US2007/009462 WO2007123940A2 (fr) 2006-04-18 2007-04-18 Dispositif et procédé d'éclairage

Publications (2)

Publication Number Publication Date
EP2008018A2 true EP2008018A2 (fr) 2008-12-31
EP2008018A4 EP2008018A4 (fr) 2011-06-29

Family

ID=38625563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07755653A Ceased EP2008018A4 (fr) 2006-04-18 2007-04-18 Dispositif et procede d'eclairage

Country Status (7)

Country Link
EP (1) EP2008018A4 (fr)
JP (2) JP5244090B2 (fr)
KR (2) KR20090007451A (fr)
CN (2) CN102305374B (fr)
BR (1) BRPI0710463A2 (fr)
TW (1) TWI432677B (fr)
WO (1) WO2007123940A2 (fr)

Families Citing this family (16)

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US9084328B2 (en) 2006-12-01 2015-07-14 Cree, Inc. Lighting device and lighting method
US8513875B2 (en) 2006-04-18 2013-08-20 Cree, Inc. Lighting device and lighting method
CN102305374B (zh) * 2006-04-18 2015-04-22 科锐公司 照明装置及照明方法
US9441793B2 (en) 2006-12-01 2016-09-13 Cree, Inc. High efficiency lighting device including one or more solid state light emitters, and method of lighting
DE202007019100U1 (de) 2007-09-12 2010-09-02 Lumitech Produktion Und Entwicklung Gmbh LED-Modul, LED-Leuchtmittel und LED-Leuchte für die energieeffiziente Wiedergabe von weißem Licht
CN102313249B (zh) * 2010-07-01 2014-11-26 惠州元晖光电股份有限公司 可调白色的方法及其应用
CN103629554B (zh) * 2012-08-21 2016-07-06 展晶科技(深圳)有限公司 照明装置
JP2014096419A (ja) * 2012-11-07 2014-05-22 Stanley Electric Co Ltd 光電子デバイス
WO2016037994A1 (fr) 2014-09-12 2016-03-17 Philips Lighting Holding B.V. Ensemble d'éclairage, une bande à diodes électroluminescentes, un luminaire et un procédé de fabrication d'un ensemble d'éclairage
KR102071954B1 (ko) * 2015-06-24 2020-01-31 가부시끼가이샤 도시바 백색 광원 시스템
US10656019B2 (en) * 2016-07-22 2020-05-19 Nichia Corporation Method of determining chromaticity rank of light emitting device
JP6837255B2 (ja) * 2016-09-06 2021-03-03 Ｎｅｃソリューションイノベータ株式会社 エリアにおける各発光ツールの発光制御の設定方法、および発光制御方法
CN109541668B (zh) * 2018-12-03 2020-05-22 西安交通大学 一种无电源辐射监测装置及方法
KR102201460B1 (ko) 2019-05-20 2021-01-11 강원대학교 산학협력단 다공성 망간산화물 나노입자 및 그의 제조방법
KR102225230B1 (ko) 2019-05-20 2021-03-09 강원대학교 산학협력단 Co3O4 다공성 나노입자 및 그의 제조방법
KR200493989Y1 (ko) * 2020-12-17 2021-07-13 (주) 영진기획 정류 표지판 체결용 led 조명구 및 이를 구비한 정류 표지판

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JP4386693B2 (ja) * 2000-05-31 2009-12-16 パナソニック株式会社 Ｌｅｄランプおよびランプユニット
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Also Published As

Publication number Publication date
KR20130019027A (ko) 2013-02-25
KR20090007451A (ko) 2009-01-16
BRPI0710463A2 (pt) 2011-08-16
JP2009534794A (ja) 2009-09-24
WO2007123940A2 (fr) 2007-11-01
JP5244090B2 (ja) 2013-07-24
JP2013058487A (ja) 2013-03-28
CN101554088B (zh) 2011-08-03
TWI432677B (zh) 2014-04-01
TW200806924A (en) 2008-02-01
CN101554088A (zh) 2009-10-07
JP5622824B2 (ja) 2014-11-12
CN102305374B (zh) 2015-04-22
CN102305374A (zh) 2012-01-04
WO2007123940A3 (fr) 2008-12-31
EP2008018A4 (fr) 2011-06-29

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