GB8820104D0 - Improvements relating to temperature control arrangements for light emitting semiconductor junction device - Google Patents

Improvements relating to temperature control arrangements for light emitting semiconductor junction device

Info

Publication number
GB8820104D0
GB8820104D0 GB888820104A GB8820104A GB8820104D0 GB 8820104 D0 GB8820104 D0 GB 8820104D0 GB 888820104 A GB888820104 A GB 888820104A GB 8820104 A GB8820104 A GB 8820104A GB 8820104 D0 GB8820104 D0 GB 8820104D0
Authority
GB
United Kingdom
Prior art keywords
light emitting
temperature control
emitting semiconductor
improvements relating
junction device
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.)
Withdrawn
Application number
GB888820104A
Other versions
GB2224374A (en
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB8820104A priority Critical patent/GB2224374A/en
Publication of GB8820104D0 publication Critical patent/GB8820104D0/en
Publication of GB2224374A publication Critical patent/GB2224374A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/024—Arrangements for thermal management
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/06808—Stabilisation of laser output parameters by monitoring the electrical laser parameters, e.g. voltage or current
    • 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
    • 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
    • H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
GB8820104A 1988-08-24 1988-08-24 Temperature control of light-emitting devices Withdrawn GB2224374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8820104A GB2224374A (en) 1988-08-24 1988-08-24 Temperature control of light-emitting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8820104A GB2224374A (en) 1988-08-24 1988-08-24 Temperature control of light-emitting devices

Publications (2)

Publication Number Publication Date
GB8820104D0 true GB8820104D0 (en) 1988-09-28
GB2224374A GB2224374A (en) 1990-05-02

Family

ID=10642640

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8820104A Withdrawn GB2224374A (en) 1988-08-24 1988-08-24 Temperature control of light-emitting devices

Country Status (1)

Country Link
GB (1) GB2224374A (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992019014A1 (en) * 1991-04-15 1992-10-29 Honeywell Inc. Semiconductor light source temperature control
JP2975160B2 (en) * 1991-05-27 1999-11-10 三菱化学株式会社 Emission spectrum control system
CA2091302A1 (en) * 1992-03-11 1993-09-12 Ichiro Yoshida Semiconductor laser and process for fabricating the same
EP0618653B1 (en) * 1993-03-30 1997-07-16 Nec Corporation Frequency stabilization method of semiconductor laser and frequency-stabilized light source
EP0834206A1 (en) * 1995-06-23 1998-04-08 Coherent, Inc. Temperature correction circuit for wavelength stabilization in a laser diode
DE10042022A1 (en) 2000-08-08 2002-03-07 Infineon Technologies Ag Method and device for measuring the temperature of the laser-active region of a semiconductor laser diode
DE50108316D1 (en) * 2001-06-27 2006-01-12 Alcatel Sa Power circuit for generating a constant LED signal
CN1653297B (en) 2002-05-08 2010-09-29 佛森技术公司 High efficiency solid-state light source and methods of use and manufacture
EP1576859A2 (en) 2002-09-16 2005-09-21 First Flower & Fruit Company A/S Led system for producing light
EP1678442B8 (en) 2003-10-31 2013-06-26 Phoseon Technology, Inc. Led light module and manufacturing method
GB0402974D0 (en) 2004-02-11 2004-03-17 Bhagat Peter Apparatus for the control of lighting and associated methods
US7018114B2 (en) * 2004-02-21 2006-03-28 Finisar Corporation Power optimization for operation of optoelectronic device with thermoelectric cooler
TWI312583B (en) 2004-03-18 2009-07-21 Phoseon Technology Inc Micro-reflectors on a substrate for high-density led array
US7816638B2 (en) * 2004-03-30 2010-10-19 Phoseon Technology, Inc. LED array having array-based LED detectors
TWI302756B (en) 2004-04-19 2008-11-01 Phoseon Technology Inc Imaging semiconductor structures using solid state illumination
KR101249025B1 (en) * 2004-10-22 2013-03-29 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Method for driving a led based lighting device
JP4800324B2 (en) 2004-12-30 2011-10-26 フォーセン テクノロジー インク Exposure equipment
ATE406783T1 (en) * 2005-03-08 2008-09-15 Sony Ericsson Mobile Comm Ab CIRCUIT AND METHOD FOR MONITORING THE TEMPERATURE OF A LIGHT-LIGHT DIODE
WO2006094590A1 (en) * 2005-03-08 2006-09-14 Sony Ericsson Mobile Communications Ab Electric circuit and method for monitoring a temperature of a light emitting diode
DE102006033233A1 (en) * 2006-07-18 2008-01-24 Austriamicrosystems Ag Light emitting diode operating method involves determining temperature of diode representing temperature signal by measuring and evaluating flux voltage of diode in activated operating condition for lighting or signaling purposes
DE102006056148B4 (en) * 2006-11-28 2016-10-27 Siemens Aktiengesellschaft Method for monitoring the operation of a traffic signal system and traffic control traffic signal system
DE102007044438A1 (en) * 2007-09-18 2009-03-19 Osram Opto Semiconductors Gmbh Circuit arrangement for operating a pulse laser diode and method for operating a pulse laser diode
CN101926223A (en) 2008-01-28 2010-12-22 Nxp股份有限公司 System and method for estimating junction temperature of light emitting diode
GB2457101A (en) * 2008-02-04 2009-08-05 Hao-Chin Pai LED driver circuit with current, voltage, and temperature regulation
WO2010049882A2 (en) * 2008-10-30 2010-05-06 Nxp B.V. Lighting unit with temperature protection
NL1038825C2 (en) * 2011-05-19 2012-11-20 Hermannus Gerhardus Maria Silderhuis Electric supply assembly for at least one led.
WO2014198707A1 (en) * 2013-06-10 2014-12-18 University Of Neuchatel Narrow linewidth semiconductor laser and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705316A (en) * 1971-12-27 1972-12-05 Nasa Temperature compensated light source using a light emitting diode
FR2526237B1 (en) * 1982-04-30 1986-02-28 Cit Alcatel SEMICONDUCTOR LASER THERMAL CONTROL DEVICE
JPS62502300A (en) * 1985-09-24 1987-09-03 ベル・コミュニケ−ションズ・リサ−チ・インコ−ポレ−テッド Injection laser temperature stabilizer

Also Published As

Publication number Publication date
GB2224374A (en) 1990-05-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)