WO2002052901A3 - Temperature dependent color control for a luminaire with a multicolored array of leds - Google Patents

Temperature dependent color control for a luminaire with a multicolored array of leds Download PDF

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Publication number
WO2002052901A3
WO2002052901A3 PCT/IB2001/002519 IB0102519W WO02052901A3 WO 2002052901 A3 WO2002052901 A3 WO 2002052901A3 IB 0102519 W IB0102519 W IB 0102519W WO 02052901 A3 WO02052901 A3 WO 02052901A3
Authority
WO
WIPO (PCT)
Prior art keywords
leds
luminaire
color coordinates
temperature dependent
color control
Prior art date
Application number
PCT/IB2001/002519
Other languages
French (fr)
Other versions
WO2002052901A2 (en
Inventor
Subramanian Muthu
Original Assignee
Koninkl 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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Priority to DE60122005T priority Critical patent/DE60122005T2/en
Priority to JP2002553872A priority patent/JP4263484B2/en
Priority to EP01272182A priority patent/EP1348318B1/en
Publication of WO2002052901A2 publication Critical patent/WO2002052901A2/en
Publication of WO2002052901A3 publication Critical patent/WO2002052901A3/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • 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
    • H05B45/22—Controlling the colour of the light using optical feedback
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Abstract

The present invention describes a method and luminaire for drivi ng an array of LEDS with at least one LED in each of a plurality of colors in a luminaire. This method controls the light output and color of the LEDs by measuring color coordinates for each LED light source for different temperatures, storing the expressions of the color coordinates as a function of the temperatures, deriving equations for the color coordinates as a function of temperature, calculating the color coordinates and lumen output fractions on-line, and controlling the light output and color of said LEDs based upon the calculated color coordinates and lumen output fractions.
PCT/IB2001/002519 2000-12-27 2001-12-12 Temperature dependent color control for a luminaire with a multicolored array of leds WO2002052901A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60122005T DE60122005T2 (en) 2000-12-27 2001-12-12 TEMPERATURE-DEPENDING COLOR CONTROL FOR MULTI-COLORED LED MATRIX
JP2002553872A JP4263484B2 (en) 2000-12-27 2001-12-12 Lighting fixture with multi-colored array of LEDs
EP01272182A EP1348318B1 (en) 2000-12-27 2001-12-12 Temperature dependent color control for a luminaire with a multicolored array of leds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/749,170 US6411046B1 (en) 2000-12-27 2000-12-27 Effective modeling of CIE xy coordinates for a plurality of LEDs for white LED light control
US09/749,170 2000-12-27

Publications (2)

Publication Number Publication Date
WO2002052901A2 WO2002052901A2 (en) 2002-07-04
WO2002052901A3 true WO2002052901A3 (en) 2003-04-10

Family

ID=25012574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/002519 WO2002052901A2 (en) 2000-12-27 2001-12-12 Temperature dependent color control for a luminaire with a multicolored array of leds

Country Status (7)

Country Link
US (1) US6411046B1 (en)
EP (1) EP1348318B1 (en)
JP (1) JP4263484B2 (en)
KR (1) KR100805396B1 (en)
CN (1) CN1190653C (en)
DE (1) DE60122005T2 (en)
WO (1) WO2002052901A2 (en)

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