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GB2517455B - Lighting Apparatus - Google Patents

Lighting Apparatus

Info

Publication number
GB2517455B
GB2517455B GB1314907.5A GB201314907A GB2517455B GB 2517455 B GB2517455 B GB 2517455B GB 201314907 A GB201314907 A GB 201314907A GB 2517455 B GB2517455 B GB 2517455B
Authority
GB
United Kingdom
Prior art keywords
lighting apparatus
lighting
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 - Fee Related
Application number
GB1314907.5A
Other versions
GB2517455A (en
GB201314907D0 (en
Inventor
Edwin Dale Kenneth
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.)
Harvard Engineering PLC
Original Assignee
Harvard Engineering PLC
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 Harvard Engineering PLC filed Critical Harvard Engineering PLC
Priority to GB1314907.5A priority Critical patent/GB2517455B/en
Publication of GB201314907D0 publication Critical patent/GB201314907D0/en
Publication of GB2517455A publication Critical patent/GB2517455A/en
Application granted granted Critical
Publication of GB2517455B publication Critical patent/GB2517455B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
    • 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
    • H05B45/24—Controlling the colour 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]
    • H05B45/20—Controlling the colour of the light
    • H05B45/28—Controlling the colour 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/382—Switched mode power supply [SMPS] with galvanic isolation between input and output
    • 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
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
GB1314907.5A 2013-08-20 2013-08-20 Lighting Apparatus Expired - Fee Related GB2517455B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1314907.5A GB2517455B (en) 2013-08-20 2013-08-20 Lighting Apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1314907.5A GB2517455B (en) 2013-08-20 2013-08-20 Lighting Apparatus

Publications (3)

Publication Number Publication Date
GB201314907D0 GB201314907D0 (en) 2013-10-02
GB2517455A GB2517455A (en) 2015-02-25
GB2517455B true GB2517455B (en) 2016-11-02

Family

ID=49301977

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1314907.5A Expired - Fee Related GB2517455B (en) 2013-08-20 2013-08-20 Lighting Apparatus

Country Status (1)

Country Link
GB (1) GB2517455B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4000352B1 (en) 2019-07-19 2023-09-06 Signify Holding B.V. Improved balance control for 2-channel cct dimming

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015205808A1 (en) * 2015-03-31 2016-10-06 Osram Gmbh Circuit arrangement for operating at least a first and exactly a second cascade of LEDs
GB2546977A (en) * 2016-01-29 2017-08-09 Global Design Solutions Ltd A lamp unit
EP4021149A1 (en) * 2020-12-22 2022-06-29 Textron Systems Corporation Light appartus with parallel-arranged leds and per-led drivers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5736881A (en) * 1994-12-05 1998-04-07 Hughes Electronics Diode drive current source
WO2001001385A1 (en) * 1999-06-29 2001-01-04 Welles Reymond Ac powered led circuits for traffic signal displays
WO2012164511A1 (en) * 2011-06-03 2012-12-06 Osram Ag A method of driving led lighting sources and related device
US20130063035A1 (en) * 2011-09-12 2013-03-14 Juno Manufacturing, LLC Dimmable led light fixture having adjustable color temperature
US20130207559A1 (en) * 2011-12-20 2013-08-15 Lumenetix, Inc. Linear bypass electrical circuit for driving led strings
EP2704532A2 (en) * 2012-08-29 2014-03-05 Osram Sylvania Inc. Current sharing circuit for LED lighting
EP2760254A1 (en) * 2013-01-25 2014-07-30 Dialog Semiconductor Inc. Adjusting color temperature in a dimmable LED lighting system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5736881A (en) * 1994-12-05 1998-04-07 Hughes Electronics Diode drive current source
WO2001001385A1 (en) * 1999-06-29 2001-01-04 Welles Reymond Ac powered led circuits for traffic signal displays
WO2012164511A1 (en) * 2011-06-03 2012-12-06 Osram Ag A method of driving led lighting sources and related device
US20130063035A1 (en) * 2011-09-12 2013-03-14 Juno Manufacturing, LLC Dimmable led light fixture having adjustable color temperature
US20130207559A1 (en) * 2011-12-20 2013-08-15 Lumenetix, Inc. Linear bypass electrical circuit for driving led strings
EP2704532A2 (en) * 2012-08-29 2014-03-05 Osram Sylvania Inc. Current sharing circuit for LED lighting
EP2760254A1 (en) * 2013-01-25 2014-07-30 Dialog Semiconductor Inc. Adjusting color temperature in a dimmable LED lighting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4000352B1 (en) 2019-07-19 2023-09-06 Signify Holding B.V. Improved balance control for 2-channel cct dimming

Also Published As

Publication number Publication date
GB2517455A (en) 2015-02-25
GB201314907D0 (en) 2013-10-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20190820