WO2012085822A3 - System and method for illumination control - Google Patents

System and method for illumination control Download PDF

Info

Publication number
WO2012085822A3
WO2012085822A3 PCT/IB2011/055784 IB2011055784W WO2012085822A3 WO 2012085822 A3 WO2012085822 A3 WO 2012085822A3 IB 2011055784 W IB2011055784 W IB 2011055784W WO 2012085822 A3 WO2012085822 A3 WO 2012085822A3
Authority
WO
WIPO (PCT)
Prior art keywords
target color
color temperatures
light sources
illumination control
illumination
Prior art date
Application number
PCT/IB2011/055784
Other languages
French (fr)
Other versions
WO2012085822A2 (en
Inventor
Jorrit Ernst DE VRIES
Egbert Lenderink
Dirk Jan VAN KAATHOVEN
Ralph Kurt
Original Assignee
Koninklijke Philips Electronics N.V.
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 N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2012085822A2 publication Critical patent/WO2012085822A2/en
Publication of WO2012085822A3 publication Critical patent/WO2012085822A3/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
    • H05B45/22—Controlling the colour of the light using optical feedback
    • 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
    • H05B45/28—Controlling the colour of the light using temperature feedback

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Systems and methods of illumination are provided. At least four solid state light sources are operable to emit light through a reflector. A plurality of target color points are identified based on respective target color temperatures of each of the plurality of target color points. The operation of an illumination system is controlled to generate a mixed white light by adjusting duty cycles of the light sources monotonically relative to the respective target color temperatures across a continuous range of color temperatures.
PCT/IB2011/055784 2010-12-22 2011-12-19 System and method for illumination control WO2012085822A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201061426185P 2010-12-22 2010-12-22
US61/426,185 2010-12-22

Publications (2)

Publication Number Publication Date
WO2012085822A2 WO2012085822A2 (en) 2012-06-28
WO2012085822A3 true WO2012085822A3 (en) 2012-11-29

Family

ID=45567052

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2011/055784 WO2012085822A2 (en) 2010-12-22 2011-12-19 System and method for illumination control

Country Status (1)

Country Link
WO (1) WO2012085822A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103836583A (en) * 2012-11-26 2014-06-04 康源医疗设备股份有限公司 LED color temperature adjusting and light mixing structure
US9839090B2 (en) * 2014-05-27 2017-12-05 The University Of Hong Kong Correlated colour temperature control system and method
CN107809814B (en) * 2016-09-08 2020-11-10 天津工业大学 Four-channel LED dimming system for synthesizing white light with high color rendering index
EP3915337B1 (en) * 2019-01-21 2023-11-15 Signify Holding B.V. Dynamic user interface
CN117615481B (en) * 2024-01-24 2024-04-09 杭州罗莱迪思科技股份有限公司 Dynamic correction color mixing system and method for influence of self-adaptive temperature on color coordinates

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6211626B1 (en) 1997-08-26 2001-04-03 Color Kinetics, Incorporated Illumination components
US6016038A (en) 1997-08-26 2000-01-18 Color Kinetics, Inc. Multicolored LED lighting method and apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GUOXING HE AND LIHONG ZHENG: "Color temperature tunable white-light light-emitting diode clusters with high color rendering index", APPLIED OPTICS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, DC; US, vol. 49, no. 24, 20 August 2010 (2010-08-20), pages 4670 - 4676, XP001556824, ISSN: 0003-6935, DOI: 10.1364/AO.49.004670 *
INGO SPEIER AND MARC SALSBURY: "Color temperature tunable white light LED system", SIXTH INTERNATIONAL CONFERENCE ON SOLID STATE LIGHTING, 63371F (SEPTEMBER 12, 2006), vol. 6337, 12 September 2006 (2006-09-12), San Diego, CA, US, pages 63371F-1 - 63371F-12, XP002684408, DOI: 10.1117/12.679688 *

Also Published As

Publication number Publication date
WO2012085822A2 (en) 2012-06-28

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