WO2004057923A1 - Sensing light emitted from multiple light sources - Google Patents
Sensing light emitted from multiple light sources Download PDFInfo
- Publication number
- WO2004057923A1 WO2004057923A1 PCT/IB2003/005983 IB0305983W WO2004057923A1 WO 2004057923 A1 WO2004057923 A1 WO 2004057923A1 IB 0305983 W IB0305983 W IB 0305983W WO 2004057923 A1 WO2004057923 A1 WO 2004057923A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- light
- lock
- light signal
- photodetector
- Prior art date
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]
- H05B45/10—Controlling the intensity of the light
- H05B45/12—Controlling the intensity 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]
- H05B45/30—Driver circuits
- H05B45/305—Frequency-control circuits
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/539,980 US7432668B2 (en) | 2002-12-20 | 2003-12-12 | Sensing light emitted from multiple light sources |
AU2003286348A AU2003286348A1 (en) | 2002-12-20 | 2003-12-12 | Sensing light emitted from multiple light sources |
JP2004561856A JP4818610B2 (en) | 2002-12-20 | 2003-12-12 | Method and apparatus for sensing light emitted from a plurality of light sources |
EP03777092.2A EP1579732B1 (en) | 2002-12-20 | 2003-12-12 | Sensing light emitted from multiple light sources |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43524302P | 2002-12-20 | 2002-12-20 | |
US60/435,243 | 2002-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004057923A1 true WO2004057923A1 (en) | 2004-07-08 |
Family
ID=32682197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2003/005983 WO2004057923A1 (en) | 2002-12-20 | 2003-12-12 | Sensing light emitted from multiple light sources |
Country Status (7)
Country | Link |
---|---|
US (1) | US7432668B2 (en) |
EP (1) | EP1579732B1 (en) |
JP (1) | JP4818610B2 (en) |
CN (1) | CN100482011C (en) |
AU (1) | AU2003286348A1 (en) |
TW (1) | TWI343658B (en) |
WO (1) | WO2004057923A1 (en) |
Cited By (17)
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US7026769B2 (en) | 2003-12-18 | 2006-04-11 | Joon Chok Lee | Luminary control system adapted for reproducing the color of a known light source |
WO2007004108A1 (en) * | 2005-06-30 | 2007-01-11 | Koninklijke Philips Electronics N.V. | Method and system for controlling the output of a luminaire |
WO2007066264A1 (en) * | 2005-12-09 | 2007-06-14 | Koninklijke Philips Electronics N.V. | Device for determining characteristics of a lighting unit |
WO2007121574A1 (en) | 2006-04-21 | 2007-11-01 | Tir Technology Lp | Method and apparatus for light intensity control |
US7317288B2 (en) | 2005-09-02 | 2008-01-08 | Au Optronics Corporation | Controlling method and system for LED-based backlighting source |
WO2008083695A1 (en) * | 2006-12-20 | 2008-07-17 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Device and method for measuring the intensity of the light of a first group of light sources of a lighting unit |
WO2009019655A2 (en) | 2007-08-07 | 2009-02-12 | Koninklijke Philips Electronics N.V. | Method and apparatus for discriminating modulated light in a mixed light system |
EP2028913A1 (en) * | 2007-08-21 | 2009-02-25 | Zumtobel Lighting GmbH | Lighting assembly with light source and sensor for capturing light given off by the light source |
WO2009040705A3 (en) * | 2007-09-28 | 2009-06-25 | Tir Technology Lp | Method and apparatus for light intensity control with drive current modulation |
EP2091301A1 (en) | 2008-02-07 | 2009-08-19 | Ledon Lighting Jennersdorf GmbH | Light measurement system comprising LEDs |
WO2010068845A1 (en) * | 2008-12-12 | 2010-06-17 | Microchip Technology Incorporated | Led brightness control by variable frequency modulation |
WO2010068853A1 (en) * | 2008-12-12 | 2010-06-17 | Microchip Technology Incorporated | Three-color rgb led color mixing and control by variable frequency modulation |
EP2254391A2 (en) | 2009-05-22 | 2010-11-24 | Zumtobel Lighting GmbH | Lighting assembly with at least one LED light source |
US8390205B2 (en) | 2010-09-01 | 2013-03-05 | Osram Sylvania Inc. | LED control using modulation frequency detection techniques |
US8461502B2 (en) | 2007-09-21 | 2013-06-11 | Continental Automotive Gmbh | Method and device for controlling the light power emitted by an LED light source |
US8729815B2 (en) | 2012-03-12 | 2014-05-20 | Osram Sylvania Inc. | Current control system |
EP2837521A3 (en) * | 2013-07-23 | 2015-07-29 | Delphi Technologies, Inc. | Vehicle instrument panel with light source diagnostics |
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US8710770B2 (en) | 2011-07-26 | 2014-04-29 | Hunter Industries, Inc. | Systems and methods for providing power and data to lighting devices |
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US11272599B1 (en) | 2018-06-22 | 2022-03-08 | Lutron Technology Company Llc | Calibration procedure for a light-emitting diode light source |
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US3328686A (en) * | 1964-08-31 | 1967-06-27 | Weston Instruments Inc | D.c. analog spectrum analyzer |
US3439283A (en) * | 1966-02-04 | 1969-04-15 | Gen Electric | Frequency shift keyed discriminating circuits |
US3439269A (en) * | 1966-12-30 | 1969-04-15 | Weston Instruments Inc | Multichannel analog analyzer |
US3876946A (en) * | 1973-10-31 | 1975-04-08 | Singer Co | Radio frequency digital fourier analyzer |
EP0296609A2 (en) * | 1987-06-26 | 1988-12-28 | Nec Corporation | An apparatus for discriminating an optical signal from others and an apparatus for tuning an optical wavelength filter used in the same |
US5172058A (en) * | 1990-12-28 | 1992-12-15 | Compagnie Generale D'automatisme Cga-Hbs | Non-destructive eddy current testing device with signal compensation for signal propagation delay |
US6055251A (en) * | 1993-09-17 | 2000-04-25 | Canon Kabushiki Kaisha | Method and apparatus for frequency modulating a semiconductor laser, and an optical communication system using the same |
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US6965205B2 (en) * | 1997-08-26 | 2005-11-15 | Color Kinetics Incorporated | Light emitting diode based products |
US7064498B2 (en) * | 1997-08-26 | 2006-06-20 | Color Kinetics Incorporated | Light-emitting diode based products |
JP3696839B2 (en) * | 2001-03-14 | 2005-09-21 | 松下電器産業株式会社 | Lighting device |
US6753661B2 (en) * | 2002-06-17 | 2004-06-22 | Koninklijke Philips Electronics N.V. | LED-based white-light backlighting for electronic displays |
US6998594B2 (en) * | 2002-06-25 | 2006-02-14 | Koninklijke Philips Electronics N.V. | Method for maintaining light characteristics from a multi-chip LED package |
-
2003
- 2003-12-12 JP JP2004561856A patent/JP4818610B2/en not_active Expired - Fee Related
- 2003-12-12 AU AU2003286348A patent/AU2003286348A1/en not_active Abandoned
- 2003-12-12 US US10/539,980 patent/US7432668B2/en not_active Expired - Fee Related
- 2003-12-12 WO PCT/IB2003/005983 patent/WO2004057923A1/en active Application Filing
- 2003-12-12 EP EP03777092.2A patent/EP1579732B1/en not_active Expired - Lifetime
- 2003-12-12 CN CNB2003801065910A patent/CN100482011C/en not_active Expired - Fee Related
- 2003-12-17 TW TW092135784A patent/TWI343658B/en not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US3328686A (en) * | 1964-08-31 | 1967-06-27 | Weston Instruments Inc | D.c. analog spectrum analyzer |
US3439283A (en) * | 1966-02-04 | 1969-04-15 | Gen Electric | Frequency shift keyed discriminating circuits |
US3439269A (en) * | 1966-12-30 | 1969-04-15 | Weston Instruments Inc | Multichannel analog analyzer |
US3876946A (en) * | 1973-10-31 | 1975-04-08 | Singer Co | Radio frequency digital fourier analyzer |
EP0296609A2 (en) * | 1987-06-26 | 1988-12-28 | Nec Corporation | An apparatus for discriminating an optical signal from others and an apparatus for tuning an optical wavelength filter used in the same |
US5172058A (en) * | 1990-12-28 | 1992-12-15 | Compagnie Generale D'automatisme Cga-Hbs | Non-destructive eddy current testing device with signal compensation for signal propagation delay |
US6055251A (en) * | 1993-09-17 | 2000-04-25 | Canon Kabushiki Kaisha | Method and apparatus for frequency modulating a semiconductor laser, and an optical communication system using the same |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7026769B2 (en) | 2003-12-18 | 2006-04-11 | Joon Chok Lee | Luminary control system adapted for reproducing the color of a known light source |
WO2007004108A1 (en) * | 2005-06-30 | 2007-01-11 | Koninklijke Philips Electronics N.V. | Method and system for controlling the output of a luminaire |
US7317288B2 (en) | 2005-09-02 | 2008-01-08 | Au Optronics Corporation | Controlling method and system for LED-based backlighting source |
CN100456354C (en) * | 2005-09-02 | 2009-01-28 | 友达光电股份有限公司 | Light source device, light source system and method of improvement light source uniform luminescence |
WO2007066264A1 (en) * | 2005-12-09 | 2007-06-14 | Koninklijke Philips Electronics N.V. | Device for determining characteristics of a lighting unit |
WO2007121574A1 (en) | 2006-04-21 | 2007-11-01 | Tir Technology Lp | Method and apparatus for light intensity control |
EP2016807A1 (en) * | 2006-04-21 | 2009-01-21 | TIR Technology LP | Method and apparatus for light intensity control |
EP2016807A4 (en) * | 2006-04-21 | 2011-02-16 | Koninkl Philips Electronics Nv | Method and apparatus for light intensity control |
WO2008083695A1 (en) * | 2006-12-20 | 2008-07-17 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Device and method for measuring the intensity of the light of a first group of light sources of a lighting unit |
WO2009019655A3 (en) * | 2007-08-07 | 2010-01-28 | Koninklijke Philips Electronics N.V. | Method and apparatus for discriminating modulated light in a mixed light system |
US8552659B2 (en) | 2007-08-07 | 2013-10-08 | Koninklijke Philips N.V. | Method and apparatus for discriminating modulated light in a mixed light system |
WO2009019655A2 (en) | 2007-08-07 | 2009-02-12 | Koninklijke Philips Electronics N.V. | Method and apparatus for discriminating modulated light in a mixed light system |
DE102007039388A1 (en) | 2007-08-21 | 2009-02-26 | Zumtobel Lighting Gmbh | Lighting arrangement with light source and sensor for detecting the light indicated by the light source |
EP2028913A1 (en) * | 2007-08-21 | 2009-02-25 | Zumtobel Lighting GmbH | Lighting assembly with light source and sensor for capturing light given off by the light source |
US8461502B2 (en) | 2007-09-21 | 2013-06-11 | Continental Automotive Gmbh | Method and device for controlling the light power emitted by an LED light source |
WO2009040705A3 (en) * | 2007-09-28 | 2009-06-25 | Tir Technology Lp | Method and apparatus for light intensity control with drive current modulation |
DE102009008079A1 (en) | 2008-02-07 | 2009-11-12 | Ledon Lighting Jennersdorf Gmbh | Lighting control apparatus, system and method for LED lighting systems |
EP2091301A1 (en) | 2008-02-07 | 2009-08-19 | Ledon Lighting Jennersdorf GmbH | Light measurement system comprising LEDs |
EP2824994A3 (en) * | 2008-12-12 | 2015-03-11 | Microchip Technology Incorporated | LED brightness control by variable frequency modulation |
WO2010068853A1 (en) * | 2008-12-12 | 2010-06-17 | Microchip Technology Incorporated | Three-color rgb led color mixing and control by variable frequency modulation |
WO2010068845A1 (en) * | 2008-12-12 | 2010-06-17 | Microchip Technology Incorporated | Led brightness control by variable frequency modulation |
US8339058B2 (en) | 2008-12-12 | 2012-12-25 | Microchip Technology Incorporated | Three-color RGB LED color mixing and control by variable frequency modulation |
US8339068B2 (en) | 2008-12-12 | 2012-12-25 | Microchip Technology Incorporated | LED brightness control by variable frequency modulation |
DE102009022244A1 (en) | 2009-05-22 | 2011-01-27 | Ledon Lighting Gmbh | Lighting arrangement with at least one light source |
EP2254391A2 (en) | 2009-05-22 | 2010-11-24 | Zumtobel Lighting GmbH | Lighting assembly with at least one LED light source |
US8390205B2 (en) | 2010-09-01 | 2013-03-05 | Osram Sylvania Inc. | LED control using modulation frequency detection techniques |
US8729815B2 (en) | 2012-03-12 | 2014-05-20 | Osram Sylvania Inc. | Current control system |
EP2837521A3 (en) * | 2013-07-23 | 2015-07-29 | Delphi Technologies, Inc. | Vehicle instrument panel with light source diagnostics |
Also Published As
Publication number | Publication date |
---|---|
TW200423433A (en) | 2004-11-01 |
US20060061288A1 (en) | 2006-03-23 |
CN1729721A (en) | 2006-02-01 |
CN100482011C (en) | 2009-04-22 |
EP1579732B1 (en) | 2014-06-18 |
JP4818610B2 (en) | 2011-11-16 |
TWI343658B (en) | 2011-06-11 |
EP1579732A1 (en) | 2005-09-28 |
US7432668B2 (en) | 2008-10-07 |
AU2003286348A1 (en) | 2004-07-14 |
JP2006511081A (en) | 2006-03-30 |
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