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

Multicolor illumination source having reduced cri variability and method Download PDF

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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
Application number
PCT/IB2007/053355
Other languages
French (fr)
Other versions
WO2008035245A2 (en
Inventor
M Gaines James
Original Assignee
Koninkl Philips Electronics Nv
M Gaines James
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 Koninkl Philips Electronics Nv, M Gaines James filed Critical Koninkl Philips Electronics Nv
Publication of WO2008035245A2 publication Critical patent/WO2008035245A2/en
Publication of WO2008035245A3 publication Critical patent/WO2008035245A3/en

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]

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 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 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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