JP2006120910A - 半導体発光素子用電源および照明装置 - Google Patents
半導体発光素子用電源および照明装置 Download PDFInfo
- Publication number
- JP2006120910A JP2006120910A JP2004308011A JP2004308011A JP2006120910A JP 2006120910 A JP2006120910 A JP 2006120910A JP 2004308011 A JP2004308011 A JP 2004308011A JP 2004308011 A JP2004308011 A JP 2004308011A JP 2006120910 A JP2006120910 A JP 2006120910A
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- Prior art keywords
- led
- light emitting
- semiconductor light
- emitting element
- current
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- 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
-
- 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
- H05B45/395—Linear regulators
- H05B45/397—Current mirror circuits
-
- 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]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
【解決手段】 電圧源11に、LED31と、LED31を変調駆動するスイッチング素子32と、LED31を流れる平均電流を検出する平均電流検出部12が接続されている。スイッチング素子32によってLED31を変調駆動すると、LED31が点滅あるいは光量が制御され、LED31は変調光を放出する。このLED31の変調駆動によって、LED31から放出される平均光量は低減するが、LED31を流れる平均電流を平均電流検出部12で検出し、LED31を流れる平均電流がほぼ一定となるように電圧源11の出力電圧を制御する。これによって、LED31の変調の有無にかかわらず、平均光量をほぼ一定に保つことができる。
【選択図】 図1
Description
Claims (6)
- 電流駆動型の半導体発光素子を変調駆動可能な半導体発光素子用電源において、電圧の制御が可能な電圧源と、前記半導体発光素子を流れる平均電流を検出する平均電流検出回路を有し、該平均電流検出回路によって検出した平均電流が略一定となるように前記電圧源の出力電圧を制御することを特徴とする半導体発光素子用電源。
- 前記電圧源の出力電圧は、最大出力電圧により制限されることを特徴とする請求項1に記載の半導体発光素子用電源。
- 前記平均電流検出回路は、電流検出用抵抗と、平均化回路と、増幅器を有することを特徴とする請求項1または請求項2に記載の半導体発光素子用電源。
- 前記半導体発光素子は、LEDであることを特徴とする請求項1ないし請求項3のいずれか1項に記載の半導体発光素子用電源。
- 請求項1ないし請求項4のいずれか1項に記載の半導体発光素子用電源と、該半導体発光素子用電源から供給される電流により発光する電流駆動型の半導体発光素子と、外部から与えられるデータに従って前記半導体発光素子に与える電流を制御する変調手段を有していることを特徴とする照明装置。
- 前記半導体発光素子用電源は、前記変調手段により前記半導体発光素子を変調駆動した場合でも、半導体発光素子の平均発光量がほぼ一定となるように出力電圧を制御することを特徴とする請求項5に記載の照明装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004308011A JP4646110B2 (ja) | 2004-10-22 | 2004-10-22 | 半導体発光素子用電源および照明装置 |
TW094136215A TW200627331A (en) | 2004-10-22 | 2005-10-17 | Power supply for semiconductor light emitting element, and lighting apparatus |
US11/667,981 US20080258641A1 (en) | 2004-10-22 | 2005-10-20 | Power Supply For Semiconductor Light Emitting Device And Illuminating Device |
PCT/JP2005/019316 WO2006043636A1 (ja) | 2004-10-22 | 2005-10-20 | 半導体発光素子用電源および照明装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004308011A JP4646110B2 (ja) | 2004-10-22 | 2004-10-22 | 半導体発光素子用電源および照明装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006120910A true JP2006120910A (ja) | 2006-05-11 |
JP4646110B2 JP4646110B2 (ja) | 2011-03-09 |
Family
ID=36203052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004308011A Expired - Fee Related JP4646110B2 (ja) | 2004-10-22 | 2004-10-22 | 半導体発光素子用電源および照明装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080258641A1 (ja) |
JP (1) | JP4646110B2 (ja) |
TW (1) | TW200627331A (ja) |
WO (1) | WO2006043636A1 (ja) |
Cited By (15)
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WO2007004530A1 (ja) * | 2005-06-30 | 2007-01-11 | Pioneer Corporation | 照明光通信装置および照明光通信方法 |
JP2008043001A (ja) * | 2006-08-02 | 2008-02-21 | Matsushita Electric Works Ltd | 配電システム |
JP2008146836A (ja) * | 2006-12-05 | 2008-06-26 | Aitec System:Kk | 照明装置 |
JP2008181969A (ja) * | 2007-01-23 | 2008-08-07 | Mitsubishi Electric Corp | 発光素子駆動装置およびそれを用いた表示装置 |
JP2009146713A (ja) * | 2007-12-13 | 2009-07-02 | Toshiba Lighting & Technology Corp | 防災照明用点灯装置及び防災照明装置 |
JP2009158507A (ja) * | 2007-12-25 | 2009-07-16 | Panasonic Electric Works Co Ltd | Led発光装置およびそれを用いた照明器具 |
JP2010283616A (ja) * | 2009-06-04 | 2010-12-16 | Panasonic Electric Works Co Ltd | 照明光通信装置 |
EP2424135A1 (en) | 2010-08-25 | 2012-02-29 | Panasonic Electric Works Co., Ltd | Illuminating light communication device |
JP2013048556A (ja) * | 2012-12-03 | 2013-03-07 | Panasonic Corp | 配電システム |
JP2014014119A (ja) * | 2010-08-25 | 2014-01-23 | Panasonic Corp | 照明光通信装置および照明光通信システム |
JP2015170530A (ja) * | 2014-03-07 | 2015-09-28 | パナソニックIpマネジメント株式会社 | 照明光通信装置 |
US9468053B1 (en) | 2015-04-03 | 2016-10-11 | Panasonic Intellectual Property Management Co., Ltd. | Lighting device, light apparatus, and signboard apparatus |
DE102016125457A1 (de) | 2015-12-25 | 2017-06-29 | Panasonic Intellectual Property Management Co., Ltd. | Beleuchtungslicht-Kommunikationsvorrichtung und Kommunikationsmodul |
JP2017536667A (ja) * | 2014-11-11 | 2017-12-07 | フィリップス ライティング ホールディング ビー ヴィ | 照明要素の駆動 |
JP2021087302A (ja) * | 2019-11-28 | 2021-06-03 | コーセル株式会社 | 電源装置 |
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US8076867B2 (en) | 2008-12-12 | 2011-12-13 | O2Micro, Inc. | Driving circuit with continuous dimming function for driving light sources |
US9030122B2 (en) | 2008-12-12 | 2015-05-12 | O2Micro, Inc. | Circuits and methods for driving LED light sources |
US9232591B2 (en) | 2008-12-12 | 2016-01-05 | O2Micro Inc. | Circuits and methods for driving light sources |
US9253843B2 (en) | 2008-12-12 | 2016-02-02 | 02Micro Inc | Driving circuit with dimming controller for driving light sources |
US8508150B2 (en) * | 2008-12-12 | 2013-08-13 | O2Micro, Inc. | Controllers, systems and methods for controlling dimming of light sources |
CN102014540B (zh) | 2010-03-04 | 2011-12-28 | 凹凸电子(武汉)有限公司 | 驱动电路及控制光源的电力的控制器 |
US8378588B2 (en) | 2008-12-12 | 2013-02-19 | O2Micro Inc | Circuits and methods for driving light sources |
US8330388B2 (en) * | 2008-12-12 | 2012-12-11 | O2Micro, Inc. | Circuits and methods for driving light sources |
US8339067B2 (en) * | 2008-12-12 | 2012-12-25 | O2Micro, Inc. | Circuits and methods for driving light sources |
US9386653B2 (en) | 2008-12-12 | 2016-07-05 | O2Micro Inc | Circuits and methods for driving light sources |
US8044608B2 (en) | 2008-12-12 | 2011-10-25 | O2Micro, Inc | Driving circuit with dimming controller for driving light sources |
US8466628B2 (en) | 2009-10-07 | 2013-06-18 | Lutron Electronics Co., Inc. | Closed-loop load control circuit having a wide output range |
US8698419B2 (en) | 2010-03-04 | 2014-04-15 | O2Micro, Inc. | Circuits and methods for driving light sources |
CN103391006A (zh) | 2012-05-11 | 2013-11-13 | 凹凸电子(武汉)有限公司 | 光源驱动电路、控制电力转换器的控制器及方法 |
US8111017B2 (en) | 2010-07-12 | 2012-02-07 | O2Micro, Inc | Circuits and methods for controlling dimming of a light source |
US8680787B2 (en) | 2011-03-15 | 2014-03-25 | Lutron Electronics Co., Inc. | Load control device for a light-emitting diode light source |
US8698404B2 (en) | 2011-03-24 | 2014-04-15 | Microsemi Corporation | Brightness control for LED lighting |
US8334898B1 (en) | 2011-07-26 | 2012-12-18 | ByteLight, Inc. | Method and system for configuring an imaging device for the reception of digital pulse recognition information |
US9287976B2 (en) | 2011-07-26 | 2016-03-15 | Abl Ip Holding Llc | Independent beacon based light position system |
US9723676B2 (en) | 2011-07-26 | 2017-08-01 | Abl Ip Holding Llc | Method and system for modifying a beacon light source for use in a light based positioning system |
US9444547B2 (en) | 2011-07-26 | 2016-09-13 | Abl Ip Holding Llc | Self-identifying one-way authentication method using optical signals |
EP2737779B1 (en) * | 2011-07-26 | 2020-02-19 | ABL IP Holding LLC | Self identifying modulated light source |
KR20160011908A (ko) * | 2014-07-23 | 2016-02-02 | 주식회사 솔루엠 | 전원장치 및 그의 구동방법 |
US9661704B2 (en) * | 2015-05-27 | 2017-05-23 | Panasonic Intellectual Property Management Co., Ltd. | Semiconductor light source drive device |
JP6593694B2 (ja) * | 2015-09-10 | 2019-10-23 | パナソニックIpマネジメント株式会社 | 可視光通信装置、及び、可視光通信装置の製造方法 |
JP6692071B2 (ja) * | 2016-07-26 | 2020-05-13 | パナソニックIpマネジメント株式会社 | 点灯装置、および照明器具 |
US10129939B1 (en) * | 2017-07-10 | 2018-11-13 | Dialog Semiconductor Inc. | High efficiency flicker attenuator for lighting |
CN111492596A (zh) | 2017-12-19 | 2020-08-04 | 松下电器(美国)知识产权公司 | 发送方法、接收方法、发送装置、以及接收装置 |
Citations (3)
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JP2002203988A (ja) * | 2000-12-28 | 2002-07-19 | Toshiba Lsi System Support Kk | 発光素子駆動回路 |
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US6636003B2 (en) * | 2000-09-06 | 2003-10-21 | Spectrum Kinetics | Apparatus and method for adjusting the color temperature of white semiconduct or light emitters |
DE10115388A1 (de) * | 2001-03-28 | 2002-10-10 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Ansteuerschaltung für ein LED-Array |
DE10225670A1 (de) * | 2002-06-10 | 2003-12-24 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Ansteuerschaltung für mindestens einen LED-Strang |
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2004
- 2004-10-22 JP JP2004308011A patent/JP4646110B2/ja not_active Expired - Fee Related
-
2005
- 2005-10-17 TW TW094136215A patent/TW200627331A/zh unknown
- 2005-10-20 US US11/667,981 patent/US20080258641A1/en not_active Abandoned
- 2005-10-20 WO PCT/JP2005/019316 patent/WO2006043636A1/ja active Application Filing
Patent Citations (3)
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JPH01173598A (ja) * | 1987-12-25 | 1989-07-10 | Nec Corp | 光量安定化回路 |
JP2001045747A (ja) * | 1999-07-28 | 2001-02-16 | Toko Inc | 発光ダイオード点灯回路 |
JP2002203988A (ja) * | 2000-12-28 | 2002-07-19 | Toshiba Lsi System Support Kk | 発光素子駆動回路 |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007004530A1 (ja) * | 2005-06-30 | 2007-01-11 | Pioneer Corporation | 照明光通信装置および照明光通信方法 |
JP2008043001A (ja) * | 2006-08-02 | 2008-02-21 | Matsushita Electric Works Ltd | 配電システム |
JP2008146836A (ja) * | 2006-12-05 | 2008-06-26 | Aitec System:Kk | 照明装置 |
JP2008181969A (ja) * | 2007-01-23 | 2008-08-07 | Mitsubishi Electric Corp | 発光素子駆動装置およびそれを用いた表示装置 |
JP2009146713A (ja) * | 2007-12-13 | 2009-07-02 | Toshiba Lighting & Technology Corp | 防災照明用点灯装置及び防災照明装置 |
JP2009158507A (ja) * | 2007-12-25 | 2009-07-16 | Panasonic Electric Works Co Ltd | Led発光装置およびそれを用いた照明器具 |
JP2010283616A (ja) * | 2009-06-04 | 2010-12-16 | Panasonic Electric Works Co Ltd | 照明光通信装置 |
US9451679B2 (en) | 2010-08-25 | 2016-09-20 | Panasonic Intellectual Property Management Co., Ltd. | Illuminating light communication device |
EP2424135A1 (en) | 2010-08-25 | 2012-02-29 | Panasonic Electric Works Co., Ltd | Illuminating light communication device |
JP2014014119A (ja) * | 2010-08-25 | 2014-01-23 | Panasonic Corp | 照明光通信装置および照明光通信システム |
JP2013048556A (ja) * | 2012-12-03 | 2013-03-07 | Panasonic Corp | 配電システム |
JP2015170530A (ja) * | 2014-03-07 | 2015-09-28 | パナソニックIpマネジメント株式会社 | 照明光通信装置 |
JP2017536667A (ja) * | 2014-11-11 | 2017-12-07 | フィリップス ライティング ホールディング ビー ヴィ | 照明要素の駆動 |
US9468053B1 (en) | 2015-04-03 | 2016-10-11 | Panasonic Intellectual Property Management Co., Ltd. | Lighting device, light apparatus, and signboard apparatus |
JP2016197556A (ja) * | 2015-04-03 | 2016-11-24 | パナソニックIpマネジメント株式会社 | 点灯装置、照明装置および看板装置 |
DE102016125457A1 (de) | 2015-12-25 | 2017-06-29 | Panasonic Intellectual Property Management Co., Ltd. | Beleuchtungslicht-Kommunikationsvorrichtung und Kommunikationsmodul |
US9814115B2 (en) | 2015-12-25 | 2017-11-07 | Panasonic Intellectual Property Management Co., Ltd. | Illumination light communication apparatus and communication module |
JP2021087302A (ja) * | 2019-11-28 | 2021-06-03 | コーセル株式会社 | 電源装置 |
JP7145141B2 (ja) | 2019-11-28 | 2022-09-30 | コーセル株式会社 | 電源装置 |
Also Published As
Publication number | Publication date |
---|---|
JP4646110B2 (ja) | 2011-03-09 |
TW200627331A (en) | 2006-08-01 |
WO2006043636A1 (ja) | 2006-04-27 |
US20080258641A1 (en) | 2008-10-23 |
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