CN100510659C - Method for controlling LED light source junction temperature and LED regulation light source made thereof - Google Patents
Method for controlling LED light source junction temperature and LED regulation light source made thereof Download PDFInfo
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- CN100510659C CN100510659C CNB2005100508537A CN200510050853A CN100510659C CN 100510659 C CN100510659 C CN 100510659C CN B2005100508537 A CNB2005100508537 A CN B2005100508537A CN 200510050853 A CN200510050853 A CN 200510050853A CN 100510659 C CN100510659 C CN 100510659C
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Abstract
Disclosed a control method of LED light source junction temperature and the LED correcting light source processed by said method belongs to the light radiometric technique and the optical technique. The invention is characterized in that: supplying the power to the LED light source with a nominal current; scaling the LED light source and recording its junction voltage; when the LED is working, keeping its junction voltage at the level of scaling voltage; controlling the junction temperature via controlling the junction voltage of LED light source. In addition, the LED correcting light source with said method comprises a LED light source base mounted on the heat dissipation base which has a fit connection with the temperature-controlled cryostat. The characters of LED correcting light source is that its two pins are connected to the constant-current source and the voltmeter. And the LED standard light source can control the junction temperature via controlling the LED junction voltage, to realizing the accurate control of the LED junction temperature. So the LED can operate stably and the invention can apply the fine adjustment of variable LED photometric, chroma and radicalization apparatus.
Description
Technical field
The invention belongs to light and radiometric technique field, the LED regulation light source that is specially a kind of control method of led light source junction temperature and makes.
Background technology
Semiconductor light-emitting-diode (LED) has obtained huge development and application after 20th century, invented the sixties, and might become 21 century the light source of application prospect is arranged most.Aspect light and actinometry, although comparatively perfect system has all been set up in International Commission on Illumination (CIE) and world major country laboratory, but measurement for light, color and the radiation of LED, but all run into bigger challenge, originally the luminosity of excellent performance, colourity and radiometry evaluation system have shown bigger measurement discreteness in more occasion, this has brought difficulty for the flavor evaluation of LED and large-scale popularization use, has restricted the development of the industry with huge prospect to a certain extent.Trace it to its cause, mainly be aspect the characteristics of luminescence, to have very big difference, thereby introduced error to measurement as the tungsten lamp and the led light source that have basic regulation light source now.
Therefore the realization of high performance LED regulation light source becomes the accurately the most key technology of measurement of the LED characteristics of luminescence.High performance LED regulation light source is mainly used in calibration LED luminosity, colourity and radiancy instrument, thereby lays the foundation for the accurate measurement of the LED characteristics of luminescence.Yet the LED regulation light source of high stable is except the condition of work that needs constant current, also to keep the constant of its PN junction temperature, but because junction temperature is difficult to directly measure, therefore generally be difficult to realize its accurate control, thereby brought difficulty for the realization of high performance LED regulation light source.
Summary of the invention
The object of the invention is to overcome the above-mentioned problems in the prior art, design provides a kind of LED regulation light source of high stable, be used for the close adjustment of all kinds of LED luminosity, colourity and radiancy instrument and system, online LED measuring system in both having can be used for producing also can be used for laboratory LED measuring system.
The control method of described a kind of led light source junction temperature, it is characterized in that: demarcate under the electric current at certain the led light source constant current is powered, when being calibrated, led light source writes down junction voltage at that time, magnitude of voltage when making its junction voltage remain on calibration when LED works is controlled its junction temperature indirectly by the mode of control LED junction voltage.
The control method of described a kind of led light source junction temperature is characterized in that by controllable temperature refrigerator control led light source environment temperature or pin temperature the magnitude of voltage when making the LED junction voltage remain on calibration.
According to the LED regulation light source that said method makes, led light source connects and to be arranged on the radiating seat, and radiating seat and controllable temperature refrigerator are connected, and two pins that it is characterized in that led light source are drawn and then linked to each other with constant current source, voltage table.
Described a kind of LED regulation light source touches with contact tube respectively after two pins that it is characterized in that led light source are drawn, and contact tube links to each other with wiring board, is connected with constant current source, voltage table by wiring board.
Described a kind of LED regulation light source is characterized in that two pins of led light source are drawn by insulation sleeve.
Described a kind of LED regulation light source is characterized in that led light source is arranged in the inner bag, and the inner bag outer end is provided with gland bonnet, has the optical fiber coupling aperture on the gland bonnet, and optical fiber coupling aperture and optical fiber are connected.
Described LED regulation light source is characterized in that led light source is arranged in the inner bag, and the inner bag fit on is provided with refrigerating chamber, and the refrigerating chamber outer wall cooperates with radiating seat, and the end cooperates with gland bonnet.
Described LED regulation light source is characterized in that filling in the inner bag high reflecting material.
Described LED regulation light source is characterized in that the radiating seat fit on is provided with heat-insulation layer.
Described LED regulation light source is characterized in that being provided with on the radiating seat temperature sensor.
Above-mentioned LED standard sources, rational in infrastructure, novel, control its junction temperature indirectly by the mode of control LED junction voltage, thereby realized the accurate control of LED junction temperature, make LEI) steady operation.Can be used for the close adjustment of all kinds of LED luminosity, colourity and radiancy instrument and system quickly and easily, online LED measuring system in can be used for producing also can be used for laboratory LED measuring system.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the optical fiber structure synoptic diagram.
Embodiment
A kind of control method of led light source junction temperature, carry out according to the following steps:
To led light source constant current power supply, write down junction voltage at that time when led light source is calibrated under certain demarcation electric current, the magnitude of voltage when making its junction voltage remain on calibration when LED works is controlled its junction temperature indirectly by the mode of control LED junction voltage.By controllable temperature refrigerator control led light source environment temperature or pin temperature, the magnitude of voltage when making the LED junction voltage remain on calibration.Because for a PN junction, under certain working current situation, its junction temperature and junction voltage are one-to-one correspondences only, and therefore permanent junction voltage just means that also junction temperature keeps constant.
The LED regulation light source that makes according to said method, as shown in the figure, led light source 12 places in the columniform stainless steel inner container 10, inner bag 10 outer snug fit are provided with refrigerating chamber 9, gland bonnet 13 usefulness screws and refrigerating chamber 9 is fixed together and with inner bag 10 sealing, have optical fiber coupling aperture 21 on the gland bonnet 13, its position faces led light source 12 tops, 20 1 of optical fiber are fixed on the gland bonnet 13 by SMA connector 19, the optically-coupled of led light source 12 being sent by optical fiber coupling aperture 21, the other end links to each other with surveying instrument etc., and the photoconduction that led light source 12 is sent goes out.Inner bag 10, gland bonnet 13 and optical fiber coupling aperture 21 have formed an annular seal space, the high reflecting material 11 of remaining space with neutral spectral reflectivity in the chamber, as filling with barium sulphate and making led light source 12 fixing, form the optically focused fiber coupler of an integration type, more light that sent by led light source 12 are coupled in the optical fiber 20 efficiently, and seldom change the spectral composition of output light.9 outer being close to of refrigerating chamber are provided with radiating seat 8, both are fixed together by holding screw 14, and radiating seat 8 usefulness platinum (Pt) 1000 are made, and a temperature sensor 7 is installed in the radiating seat 8, outside the radiating seat 8 is one deck heat-insulation layer 16, and heat-insulation layer 16 usefulness gib screws 15 are fixing with radiating seat 8.The cooling piece of controllable temperature refrigerator 5 is attached on the end face of radiating seat 8, and heating radiator 4 and fan 3 are housed.The refrigeration temperature control circuit of controllable temperature refrigerator 5 adopts the PID ratio to regulate control, carries out preliminary temperature control according to the temperature value of temperature sensor 7, and its concrete structure does not belong to protection scope of the present invention for existing general known technology, does not repeat them here.
Two pins of led light source 12 are drawn and are contacted with two contact tubes 18 respectively from installing inside by insulation sleeve 6, and contact tube 18 links to each other with wiring board 17 and is screwed on device.Two pins of led light source 12 are connected with external circuit four lines by wiring board 17, a pair ofly be connected the led light source 12 constant current work under the electric current of demarcating that makes with precision DC constant current source 2, a pair ofly be connected the measurement that is used for the LED junction voltage with precision digital voltage table 1, and the environment temperature of regulating led light sources 12 by controllable temperature refrigerator 5, magnitude of voltage when making its junction voltage remain on calibration, promptly control its junction temperature indirectly by the mode of control led light source 12 junction voltages, realize the accurate control of led light source 12 junction temperatures, thereby obtain the LED regulation light source of high stable.Can be used for the close adjustment of all kinds of LED luminosity, colourity and radiancy instrument and system quickly and easily, online LED measuring system in can be used for producing also can be used for laboratory LED measuring system.
Claims (5)
1, a kind of control method of led light source junction temperature, it is characterized in that: under certain specific currents, the led light source constant current is powered, when being calibrated, led light source writes down junction voltage at that time, by controllable temperature refrigerator control led light source environment temperature or pin temperature, magnitude of voltage when making the LED junction voltage remain on calibration is controlled its junction temperature indirectly by the mode of control LED junction voltage.
2, the LED regulation light source that a kind of method according to claim 1 makes, led light source (12) connection is arranged on the radiating seat (8), radiating seat (8) is connected with controllable temperature refrigerator (5), two pins that it is characterized in that led light source (12) are drawn back and constant current source (2), voltage table (1) links to each other, led light source (12) is arranged in the inner bag (10), inner bag (10) outer end is provided with gland bonnet (13), have optical fiber coupling aperture (21) on the gland bonnet (13), optical fiber coupling aperture (21) is connected with optical fiber (20), inner bag (10) fit on is provided with refrigerating chamber (9), refrigerating chamber (9) outer wall cooperates with radiating seat (8), fill high reflecting material (11) in the inner bag (10), the outer heat-insulation layer (16) that is provided with of radiating seat (8), temperature sensor (7) is set in the radiating seat (8), the cooling piece of controllable temperature refrigerator (5) is attached on the end face of radiating seat (8), by the environment temperature that controllable temperature refrigerator (5) is regulated led light source (12), and the magnitude of voltage when making its junction voltage remain on calibration.
3, LED regulation light source as claimed in claim 2, after drawing, two pins that it is characterized in that led light source (12) touch with contact tube (18) respectively, contact tube (18) links to each other with wiring board (17), is connected with constant current source (2), voltage table (1) by wiring board (17).
4,, it is characterized in that two pins of led light source (12) are drawn by insulation sleeve (6) as claim 2 or 3 described LED regulation light sources.
5, the LED regulation light source of stating as claim 2 is characterized in that refrigerating chamber (9) end and gland bonnet (13) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100508537A CN100510659C (en) | 2005-07-26 | 2005-07-26 | Method for controlling LED light source junction temperature and LED regulation light source made thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100508537A CN100510659C (en) | 2005-07-26 | 2005-07-26 | Method for controlling LED light source junction temperature and LED regulation light source made thereof |
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| CN1738507A CN1738507A (en) | 2006-02-22 |
| CN100510659C true CN100510659C (en) | 2009-07-08 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102009022611B4 (en) * | 2009-05-26 | 2012-03-08 | Instrument Systems Optische Messtechnik Gmbh | Kalibrierstrahlungsquelle |
| CN101793359B (en) * | 2010-02-20 | 2013-03-13 | 杭州远方光电信息股份有限公司 | Working method of LED lamp capable of constant light emitting |
| CN102494794A (en) * | 2011-12-01 | 2012-06-13 | 赖瑞琦 | Temperature measurement method of LED (Light-emitting Diode) lamp |
| CN103487611B (en) * | 2013-09-22 | 2015-12-23 | 中国科学院半导体研究所 | For testing fixture and the clamp assembly of LED array light source performance |
| WO2016165269A1 (en) * | 2015-04-13 | 2016-10-20 | 杭州远方光电信息股份有限公司 | Apparatus for measuring optical properties of object |
| CN104792710B (en) * | 2015-04-13 | 2018-08-03 | 杭州远方光电信息股份有限公司 | A kind of object optical characteristic measuring device |
| CN105021291B (en) * | 2015-08-07 | 2018-06-01 | 广州赛西标准检测研究院有限公司 | LED module calorifics interface measuring system and its measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2408571Y (en) * | 1999-12-07 | 2000-11-29 | 浙江大学 | Luminous diode chip and epitaxy chip light intensity measurer |
| CN1591260A (en) * | 2003-08-25 | 2005-03-09 | Tdk株式会社 | Method and apparatus for managing temperature of light emitting element, and lighting apparatus |
| CN2859480Y (en) * | 2005-07-26 | 2007-01-17 | 潘建根 | A LED calibration illuminating source |
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2005
- 2005-07-26 CN CNB2005100508537A patent/CN100510659C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2408571Y (en) * | 1999-12-07 | 2000-11-29 | 浙江大学 | Luminous diode chip and epitaxy chip light intensity measurer |
| CN1591260A (en) * | 2003-08-25 | 2005-03-09 | Tdk株式会社 | Method and apparatus for managing temperature of light emitting element, and lighting apparatus |
| CN2859480Y (en) * | 2005-07-26 | 2007-01-17 | 潘建根 | A LED calibration illuminating source |
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