CA2575054C - Intelligent drive circuit for a light emitting diode (led) light engine - Google Patents

Intelligent drive circuit for a light emitting diode (led) light engine Download PDF

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Publication number
CA2575054C
CA2575054C CA2575054A CA2575054A CA2575054C CA 2575054 C CA2575054 C CA 2575054C CA 2575054 A CA2575054 A CA 2575054A CA 2575054 A CA2575054 A CA 2575054A CA 2575054 C CA2575054 C CA 2575054C
Authority
CA
Canada
Prior art keywords
led
light engine
led light
drive current
sensed
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.)
Expired - Lifetime
Application number
CA2575054A
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English (en)
French (fr)
Other versions
CA2575054A1 (en
Inventor
Garrett Young
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.)
Dialight Corp
Original Assignee
Dialight Corp
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 Dialight Corp filed Critical Dialight Corp
Publication of CA2575054A1 publication Critical patent/CA2575054A1/en
Application granted granted Critical
Publication of CA2575054C publication Critical patent/CA2575054C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
    • 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
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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
    • H05B45/18—Controlling the intensity of the light using temperature 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • 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
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
CA2575054A 2004-08-09 2005-03-29 Intelligent drive circuit for a light emitting diode (led) light engine Expired - Lifetime CA2575054C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/913,451 2004-08-09
US10/913,451 US7132805B2 (en) 2004-08-09 2004-08-09 Intelligent drive circuit for a light emitting diode (LED) light engine
PCT/US2005/010658 WO2006022867A2 (en) 2004-08-09 2005-03-29 Intelligent drive circuit for a light emitting diode (led) light engine

Publications (2)

Publication Number Publication Date
CA2575054A1 CA2575054A1 (en) 2006-03-02
CA2575054C true CA2575054C (en) 2010-10-05

Family

ID=35756750

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2575054A Expired - Lifetime CA2575054C (en) 2004-08-09 2005-03-29 Intelligent drive circuit for a light emitting diode (led) light engine

Country Status (7)

Country Link
US (2) US7132805B2 (enExample)
EP (1) EP1776847B1 (enExample)
JP (1) JP5430852B2 (enExample)
CN (1) CN100581011C (enExample)
AU (1) AU2005278108B2 (enExample)
CA (1) CA2575054C (enExample)
WO (1) WO2006022867A2 (enExample)

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EP1776847A2 (en) 2007-04-25
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WO2006022867A2 (en) 2006-03-02
CA2575054A1 (en) 2006-03-02
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EP1776847B1 (en) 2013-03-13
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WO2006022867A3 (en) 2007-08-02
CN101124703A (zh) 2008-02-13

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