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WO2008035245A3 - Multicolor illumination source having reduced cri variability and method - Google Patents

Multicolor illumination source having reduced cri variability and method Download PDF

Info

Publication number
WO2008035245A3
WO2008035245A3 PCT/IB2007/053355 IB2007053355W WO2008035245A3 WO 2008035245 A3 WO2008035245 A3 WO 2008035245A3 IB 2007053355 W IB2007053355 W IB 2007053355W WO 2008035245 A3 WO2008035245 A3 WO 2008035245A3
Authority
WO
WIPO (PCT)
Prior art keywords
leds
variability
cri
illumination source
reduced
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
PCT/IB2007/053355
Other languages
French (fr)
Other versions
WO2008035245A2 (en
Inventor
M Gaines James
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2008035245A2 publication Critical patent/WO2008035245A2/en
Publication of WO2008035245A3 publication Critical patent/WO2008035245A3/en
Anticipated expiration legal-status Critical
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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Control Of El Displays (AREA)

Abstract

The variability of the CRI among white light lamps obtained by mixing the light from multicolor LEDs (e.g., R, A, G, B or R, G, B LEDs) is reduced and the absolute value of CRI is increased by selecting the LEDs for each color to have a minimum difference and/or distribution of peak wavelengths, such as by choosing the LEDs from selected pre-sorted bins of LEDs having a designated range of peak wavelengths for each color.
PCT/IB2007/053355 2006-09-22 2007-08-22 Multicolor illumination source having reduced cri variability and method Ceased WO2008035245A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82659906P 2006-09-22 2006-09-22
US60/826,599 2006-09-22

Publications (2)

Publication Number Publication Date
WO2008035245A2 WO2008035245A2 (en) 2008-03-27
WO2008035245A3 true WO2008035245A3 (en) 2008-05-29

Family

ID=39102926

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/053355 Ceased WO2008035245A2 (en) 2006-09-22 2007-08-22 Multicolor illumination source having reduced cri variability and method

Country Status (1)

Country Link
WO (1) WO2008035245A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010003653B4 (en) * 2010-04-06 2018-05-24 Osram Gmbh A method for producing a light mixing box in which a number of light-emitting diodes is statistically determined, corresponding lighting device and set of lighting devices
US8896197B2 (en) 2010-05-13 2014-11-25 Cree, Inc. Lighting device and method of making

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6132072A (en) * 1996-06-13 2000-10-17 Gentex Corporation Led assembly
DE10233050A1 (en) * 2002-07-19 2004-02-05 Osram Opto Semiconductors Gmbh Light emitting diode source especially for white light has blue LED and gallium nitride uv diode irradiating a fluorescent material
WO2005022030A2 (en) * 2003-08-29 2005-03-10 Koninklijke Philips Electronics N.V. Color-mixing lighting system
US20060057753A1 (en) * 2004-09-11 2006-03-16 Schardt Craig R Methods for producing phosphor based light sources
EP1643554A2 (en) * 2004-09-30 2006-04-05 Osram Opto Semiconductors GmbH Light emitting diode assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6132072A (en) * 1996-06-13 2000-10-17 Gentex Corporation Led assembly
DE10233050A1 (en) * 2002-07-19 2004-02-05 Osram Opto Semiconductors Gmbh Light emitting diode source especially for white light has blue LED and gallium nitride uv diode irradiating a fluorescent material
WO2005022030A2 (en) * 2003-08-29 2005-03-10 Koninklijke Philips Electronics N.V. Color-mixing lighting system
US20060057753A1 (en) * 2004-09-11 2006-03-16 Schardt Craig R Methods for producing phosphor based light sources
EP1643554A2 (en) * 2004-09-30 2006-04-05 Osram Opto Semiconductors GmbH Light emitting diode assembly

Also Published As

Publication number Publication date
WO2008035245A2 (en) 2008-03-27

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