CN201429463Y - Lumen efficiency test device of LED lamp - Google Patents
Lumen efficiency test device of LED lamp Download PDFInfo
- Publication number
- CN201429463Y CN201429463Y CN2009200776549U CN200920077654U CN201429463Y CN 201429463 Y CN201429463 Y CN 201429463Y CN 2009200776549 U CN2009200776549 U CN 2009200776549U CN 200920077654 U CN200920077654 U CN 200920077654U CN 201429463 Y CN201429463 Y CN 201429463Y
- Authority
- CN
- China
- Prior art keywords
- light fixture
- led light
- lumen
- led lamp
- matrix type
- 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
Links
Images
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model relates to a lumen efficiency test device of a LED lamp, which comprises a tested LED lamp, wherein a large-area matrix lumen photoelectric detector is arranged at the side of a luminous surface in an opposite direction; temperature sensors are arranged on the back surface of each photoelectric detector; the photoelectric output signal end of each photoelectric detector and the temperature signal output end of each temperature sensor are respectively and oppositely connected with the signal output end of a multi analog/digital conversion circuit; a digitized power supply withhigh precision is arranged; the power output end of the digitized power supply with high precision is connected with the tested LED lamp, and the signal output end is connected with a computer; and the signal output end of the multi analog/digital conversion circuit is connected with the computer. The total luminous flux of the LED lamp can be measured in real time by the lumen efficiency test device of a LED lamp, the responding speed is high, and the repeatability of measuring data is good; the operation of the lumen efficiency test device of a LED lamp is convenient and fast; the lumen efficiency test device of a LED lamp can be used for measuring the related technical parameters of various LED lamps with different calibers and even huge size and different window shapes; and the lumenefficiency test device of a LED lamp can be widely used for the test field of the energy-saving performance/ luminous efficiency of various LED lamps.
Description
Technical field
The utility model belongs to fields of measurement, relates in particular to the method for testing of optical devices such as a kind of LED of being used for light fixture.
Background technology
LED light fixture luminous efficiency (also claiming electrical efficiency) is to estimate the actual energy-conservation parameter of light fixture, is meant the total light flux of LED light fixture output and the ratio of gross electric capacity consumption, and its parameter unit is a lumens/watt.The key of this parameter testing is the total light flux of LED light fixture output is tested.
The test of light source output total light flux, the most frequently used method is to use the spheric photometer of being made up of various diameter integrating spheres, for example, the day for announcing is on August 6th, 2008, notification number is to disclose a kind of " the full-automatic light of a kind of great power LED, Testing device of electrical parameter " in the Chinese patent of CN 201096613Y, it comprises display, Test Host, frame, slideway, workpiece packing tube, integrating sphere, and Test Host connects display, integrating sphere, motor.It is characterized in that being equipped with on the slideway radio-frequency generator.The frequency of wherein selected radio-frequency generator is best between 20～200Hz.The utility model has the advantages that this device is in use easy and simple to handle, effectively solve card road phenomenon in the LED testing process.
And for example, open day is on May 13rd, 2009, publication number is to disclose a kind of " method of testing of the instantaneous luminous flux of LED and device under the PWM Driving technique " in the Chinese invention patent application of CN101430223A, and it also adopts the integrating sphere method that the luminous flux of LED to be measured is measured.
As seen, the test of the total light flux of in the prior art pointolite being exported has had the technical scheme of comparative maturity, but it can not be applied to the test of light fixture total light flux, because the caliber size of light fixture very big (for " point " light source), and the profile of light fixture light stream output window is different.
In addition, in integration sphere light source system, exist than big-difference between the spectral distribution of LED product and spatial light intensity distribution and working standard lamp, can bring bigger measuring error.
At present, to the test of light fixture output total light flux, application distribution photometer method more generally, it has been listed in national optics dosage council specified test, and has some companies to produce distribution photometer products.
The measuring principle of distribution photometer is based on the measurement of light fixture direction luminous intensity, test data by light fixture all directions luminous intensity, through the total light flux data that space integral is calculated and the derivation light fixture is exported, in fact this is a kind of indirect space integral measuring method.
Distribution photometer system is not particularly limited profile, size and the beam angle of LED product, is very crucial but keep stable (in fact the relating to the stability of photoluminescence of light fixture) of LED product self temperature.
As seen, the measuring principle of distribution photometer, determined it not measure in real time to the light fixture total light flux, simultaneously, this measuring method all has very high requirement to operant level of precision, test environment and the tester of the stability of lamp luminescence, each moving component of test macro or the like.
In addition, distribution photometer cost height, test process is long, and experimental implementation condition harshness is repeatable poor, especially because the factors such as parasitic light that proving installation itself and test environment are produced can cause very big measuring error, is difficult to spread to common laboratory.
The utility model content
Technical problem to be solved in the utility model provides a kind of LED light fixture method for testing lumen efficiency, it directly receives the total light flux of LED light fixture output, can measure in real time different bores, the different various LED light fixtures of window shape, its measuring system is cheap, response speed is fast, the favorable repeatability of test data, easy to operate, quick, spread to common laboratory easily.
Technical scheme of the present invention is: a kind of LED light fixture luminous efficiency proving installation is provided, comprise tested LED light fixture, it is characterized in that: in the light-emitting area side of light fixture to be measured, be provided with in opposite directions one measure-alike with LED light fixture light output window/close or shape is identical/close, closely arrange and the large-area matrix type lumen photodetection module that constitutes by several pieces photodetectors; At the front end of large-area matrix type lumen photodetection module, the light fixture fringe radiation luminous flux collector of a toroidal is set, millimeter level gap is arranged between the bottom surface of described fringe radiation luminous flux collector and the matrix type lumen photodetection module; The light-receiving back side at each photodetector is provided with temperature sensor; Around the gap of light fixture fringe radiation luminous flux collector and large-area matrix type lumen photodetection module, cooling fan is set; Temperature sensor is connected with temperature control circuit, and the output terminal of temperature control circuit is connected with cooling fan, constitutes closed loop temperature control link; The temperature signal output terminal of the photocurrent of each matrix unit photodetector or photovoltage output signal end and each temperature sensor is distinguished corresponding connection with the signal input part of multichannel mould/number conversion circuit in the matrix type lumen photodetection module; One high-precision digital power supply is set, and its power take-off is connected with tested LED light fixture, and its signal output part is connected with computing machine; Multichannel mould/number conversion circuit signal output terminal is connected with computing machine.
The inside surface of above-mentioned fringe radiation luminous flux collector is provided with the reflector layer of visible range high reflectance, its floorage is slightly less than or near the size of large-area matrix type lumen photodetection module, its aperture area that is connected with tested LED light fixture greater than or near the bore of tested light fixture, and place the front end of large-area matrix lumen of light electric explorer with toroidal.
The reflector layer of above-mentioned fringe radiation luminous flux collector inside surface is visible range high reflectance sticking film or plated film.
Further, described large-area matrix type lumen photodetection module is closely arranged by the silicon single crystal photodetector of two slices centimetres of magnitudes and constitute at least.
On described each sheet silicon single crystal photodetector, cover and be provided with luminosity function coupling light filter and neutral variable optical attenuator.
Its luminosity function coupling light filter is coloured glass or the resistant to elevated temperatures coloured polyester film that is complementary with transmitted spectrum, but also the applied optics film plating process is made.
Its neutral variable optical attenuator is neutral light intensity attenuation glass or adopts the surface to have the high grid that absorbs the black paint proper density, but also the applied optics film plating process is made.
Electrically insulated from one another between the silicon single crystal photodetector of above-mentioned each matrix unit of large-area matrix type lumen photodetection module.
Compared with the prior art, the utility model has the advantages that:
1. the matrix type lumen photodetection module that adopts several pieces monocrystalline photodetectors to constitute, directly receive the total light flux of LED light fixture output, can measure in real time the light fixture total light flux, its response speed is fast, the favorable repeatability of test data, easy to operate, quick, compare with the distribution photometer method, its equipment manufacturing cost is cheap, spreads to common laboratory easily;
2. its large-area matrix type lumen photodetection module has identical/close size or identical/close shape with LED light fixture light output window, can realize the measurement to the different various LED light fixture correlation technique parameters of different bores even huge size, window shape;
3. applied range not only can be used for the test of LED light fixture, also applicable to the generally test of light fixture.
Description of drawings
Fig. 1 is the formation synoptic diagram of this proving installation;
Fig. 2 is a large-area matrix type lumen photodetection module cross-sectional view;
Fig. 3 is a large-area matrix type lumen photodetection module flat structural representation;
Fig. 4 is a light fixture output light stream near field distribution dividing region synoptic diagram;
Fig. 5 is the wiring diagram of multichannel mould/number conversion circuit.
1 is tested LED light fixture among the figure, 2 is light fixture fringe radiation luminous flux collector, and 3 is large-area matrix type lumen photodetection module, and 4 is temperature sensor, 5 and 6 is the circuit board of large-area matrix lumen of light electric explorer subassembly, 7 is cooling fan, and 8 is power supply, and 9 is computing machine, 21 is neutral variable optical attenuator, 22 are luminosity function coupling light filter, and 23 is the silicon single crystal photodetector, and 24 is substrate.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Among Fig. 1, test macro comprises tested LED light fixture 1, light fixture fringe radiation luminous flux collector 2, large-area matrix type lumen photodetection module 3, temperature sensor 4, the circuit board 5 and 6 of large-area matrix lumen of light electric explorer subassembly, cooling fan 7, power supply 8, computing machine 9.
As seen from the figure, in the light-emitting area side of light fixture to be measured, be provided with in opposite directions one measure-alike with LED light fixture light output window/close or shape is identical/close, closely arrange and the large-area matrix type lumen photodetection module that constitutes by several pieces photodetectors; Front end in large-area matrix type lumen photodetection module, be provided with the light fixture fringe radiation luminous flux collector of a toroidal, be used for the light stream that tested light fixture edge is dispersed is converged to matrix type lumen of light electric explorer, to reduce the loss of overflowing of tested light fixture edge light stream.
Light fixture fringe radiation luminous flux collector can be styles such as square, circle, its floorage is slightly less than or near large-area matrix photodetector size, its aperture area that is connected with tested light fixture greater than or near the bore of tested light fixture, and place the front end of large-area matrix lumen of light electric explorer, and make its bottom surface and matrix detector that a millimeter level gap be arranged with toroidal.
Adopt inside surface to have the made light fixture fringe radiation luminous flux collector of high reflectance, the material of making can application surface has the metal material of visible range high reflectance directly to be made, and also can adopt method manufacturings such as having high reflectivity film stickup, plated film.
The light-receiving back side at each photodetector is provided with temperature sensor; Around the gap of light fixture fringe radiation luminous flux collector and large-area matrix type lumen photodetection module, be provided with cooling fan; Temperature sensor is connected with temperature control circuit, and the output terminal of temperature control circuit is connected with cooling fan, constitutes closed loop temperature control link; The temperature signal output terminal of the photocurrent of each matrix unit photodetector or photovoltage output signal end and each temperature sensor is distinguished corresponding connection with the signal input part of multichannel mould/number conversion circuit in the matrix type lumen photodetection module; Multichannel mould/number conversion circuit signal output terminal is connected with computing machine.
The temperature sensor data of each matrix unit, can show in real time through after the processing of temperature control circuit/the data preservation, and can be by the running of control cooling fan, reduce the temperature rise of each matrix unit photodetector that light fixture energising work causes, make its working temperature stable, reduce test error because of temperature variation produced.
Because silicon single crystal photodetector responsiveness can reduce along with the rising of temperature, 1 ℃ of temperature variation, big appointment causes the variation of 0.1% sensitive detection parts photoelectric response rate, so should keep the temperature stabilization of matrix lumen of light electric explorer as far as possible.
In addition, the temperature signal of above-mentioned photocurrent or photovoltage output signal and each temperature sensor can scan chronologically by multichannel analog to digital conversion circuit or corresponding A/D conversion-single-chip microcomputer sensing circuit, and finish the A/D conversion, sends into computing machine and carries out data processing.
Power supply can adopt the digitizing power supply of high stability, and it to the light fixture power supply, directly sends the real time power consumption data of light fixture into computing machine on the one hand simultaneously.
Data read-processing-control-software for display has been installed in the computing machine, has been handled and the demonstration test data.
Because the reading of the test of the photoelectric characteristic of silicon single crystal photodetector and lumen calibration test, photosignal and temperature signal, A/D signal transformation, temperature is controlled and digitizing power supply etc. is prior art, so its concrete connection line, principle of work or signal Processing/control procedure are no longer narrated at this.
Among Fig. 2, large-area matrix type lumen photodetection module is by the closely arrangement/splicing and constituting of the silicon single crystal photodetector 23 of at least two slices centimetres of magnitudes, and the gap of its splicing is less than 0.2mm.
On the surface of monocrystalline photodetector 23, cover and be provided with neutral variable optical attenuator 21, in order to adjust the light intensity of light fixture irradiation large-area matrix lumen photoelectric detector, make proving installation be in the linear work dynamic range; Its neutral variable optical attenuator can adopt neutral light intensity attenuation glass or adopt the surface to be coated with the grid that height absorbs the proper density of 3M black paint, but also the applied optics film plating process is made.
On each sheet monocrystalline photodetector 23, also cover and be provided with luminosity function coupling light filter 22, coloured glass or resistant to elevated temperatures coloured polyester film that its light filter can adopt transmitted spectrum to be complementary, but also the applied optics film plating process is made.
The monocrystalline photodetector of above-mentioned each unit all will make it have the photoelectric response rate of identical or uniformity through photoelectric characteristic test and lumen calibration test.
The size of the quantity of matrix type lumen of light electrical resistivity survey measurement unit (being the quantity of silicon single crystal photodetector), required splicing area, corresponding with tested light fixture light output window, also can be suitably greater than the light output window size of tested light fixture.
The monocrystalline photodetector is arranged on the substrate 24, and temperature sensor 4 is used to detect the temperature of matrix lumen of light electric explorer.
Mutual electrical insulation between each matrix unit of above-mentioned matrix photodetection module.
Because the photoelectric detector that is adopted has time fast-response energy, so can obtain the transient test data of the total lumen output of light fixture simultaneously.
Because silicon single crystal photodetector, neutral variable optical attenuator, luminosity function coupling light filter, photoelectric characteristic test and lumen calibration test are prior art, so no longer describe in detail.
It shown in Fig. 3 the wiring board of large-area matrix photodetection module, it is attached to and is labeled as among Fig. 2 on 24 the substrate, what provide among this figure is 8 * 15 matrixes, the size of matrix need be determined according to the principle of " size of required area; corresponding with tested light fixture light output window also can make local light output window size greater than tested light fixture " during actual the use.
During actual the test, add up by the photosignal data that each matrix unit photodetector is received, just can obtain the total light flux lumen of LED light fixture output,, can obtain the luminous efficiency of LED light fixture of the gross electric capacity consumption of total light flux lumen divided by the LED light fixture.
Its concrete computing method are as follows:
The total light flux lumen data F of LED light fixture output is the result of the photosignal data accumulation that receives by each matrix unit:
F＝∑Amn
Amn is the matrix unit of photodetector in the formula;
m＝1，2，3，...；
n＝1，2，3，...。
LED light fixture luminous efficiency (actual energy-conservation evaluating) η:
η=F/P (lumens/watt)
P is the gross electric capacity consumption of LED light fixture in the formula.
Fig. 4 has provided the march into the arena division of distributed areas of light fixture output light stream, is example shown in scheming, and is described further:
(1) light fixture output total light flux test:
F＝∑Amn
Amn is the matrix unit of photodetector in the formula;
m＝1，2，3，...8
n＝1，2，3，...15
(2) light fixture output near field light stream areal distribution test:
(1) central area:
F
0＝∑Amn
m＝4，5
n＝6，7，8，9，10
(2) external zones:
F
2＝∑
1Amn+∑
2Amn+∑
3Amn+∑
4Amn
Wherein:
∑
1Amn m＝2，3，4，5，6，7 n＝3，4，5
∑
2Amn m＝2，3，4，5，6，7 n＝11，12，13
∑
3Amn m＝2，3 n＝6，7，8，9，10
∑
4Amn m＝6，7 n＝6，7，8，9，10
(3) marginarium:
F
3＝∑′
1Amn+∑′
2Amn+∑′
3Amn+∑′
4Amn
Wherein:
∑′
1Amn m＝1，2，3，4，5，6，7，8 n＝1，2
∑′
2Amn m＝1，2，3，4，5，6，7，8 n＝1，2
∑′
3Amn m＝1 n＝1，2，3，…15
∑′
4Amn m＝8 n＝1，2，3，…15
From foregoing description as can be seen, because the utility model can carry out cutting apart refinement and can measure/comment each unit of cutting apart refinement separately to the whole light-emitting zone of light fixture, so survey its light distribution situation for the light fixture separated regions of different purposes, this is the application of an initiative.
For example, to being used for the light fixture under the concentrated illumination occasion of requirement, can detect the near field distribution situation of its light intensity, to being used to disperse illumination or requiring light fixture under the balanced illumination occasion, the far-field distribution situation of its light intensity can be surveyed, for some special-purpose or be applicable to the light fixture of specific occasion, even the light distribution situation of certain or some appointed areas can be measured, pass judgment on for the detection and the performance of the light fixture of various different purposes, brought a kind of brand-new means of testing and assessment method.
In Fig. 5, provided the wiring diagram of multi-analog input/translation circuit, as seen from the figure, the output photosignal of each silicon single crystal photodetector in the large-area matrix type lumen photodetection module, import input mux AD7501 chronologically, send into MC14433 behind AD7650 amplification, capacitance-resistance filter, MC14433 is in continuously conversion regime automatically, its output terminal Q
0～Q
3, DS1～DS3 directly is connected with the P1 mouth of singlechip CPU 8031, end signal EOC is connected to 8031 INTI mouth, single-chip microcomputer adopts the interrupt mode reading of data.
Testing arrangement of the present utility model directly receives the total light flux that the LED light fixture is exported, can be to the light fixture total light flux Measure in real time, its fast response time, the favorable repeatability of test data, easy to operate, quick, with a minute lighting Degree meter method is compared, and its equipment manufacturing cost is cheap, spreads to easily common laboratory, can realize different bores even huge The measurement of the various LED light fixture correlation technique parameters that size, window shape are different, applied range, not only available In the test of LED light fixture, also applicable to the generally test of light fixture.
The utility model can be widely used in the field tests of the energy-efficient performance/luminous efficiency of various light fixtures.
Claims (8)
1. a LED light fixture luminous efficiency proving installation comprises tested LED light fixture, it is characterized in that:
In the light-emitting area side of light fixture to be measured, be provided with in opposite directions one measure-alike with LED light fixture light output window/close or shape is identical/close, closely arrange and the large-area matrix type lumen photodetection module that constitutes by several pieces photodetectors;
At the front end of large-area matrix type lumen photodetection module, the light fixture fringe radiation luminous flux collector of a toroidal is set, millimeter level gap is arranged between the bottom surface of described fringe radiation luminous flux collector and the matrix type lumen photodetection module;
The light-receiving back side at each photodetector is provided with temperature sensor;
Around the gap of light fixture fringe radiation luminous flux collector and large-area matrix type lumen photodetection module, cooling fan is set;
Temperature sensor is connected with temperature control circuit, and the output terminal of temperature control circuit is connected with cooling fan, constitutes closed loop temperature control link;
The temperature signal output terminal of the photocurrent of each matrix unit photodetector or photovoltage output signal end and each temperature sensor is distinguished corresponding connection with the signal input part of multichannel mould/number conversion circuit in the matrix type lumen photodetection module;
One high-precision digital power supply is set, and its power take-off is connected with tested LED light fixture, and its signal output part is connected with computing machine;
Multichannel mould/number conversion circuit signal output terminal is connected with computing machine;
2. according to the described LED light fixture of claim 1 luminous efficiency proving installation, it is characterized in that the inside surface of described fringe radiation luminous flux collector is provided with the reflector layer of visible range high reflectance, its floorage is slightly less than or near the size of large-area matrix type lumen photodetection module, its aperture area that is connected with tested LED light fixture greater than or near the bore of tested light fixture, and place the front end of large-area matrix lumen of light electric explorer with toroidal.
3. according to the described LED light fixture of claim 2 luminous efficiency proving installation, the reflector layer that it is characterized in that described fringe radiation luminous flux collector inside surface is visible range high reflectance sticking film or plated film.
4. according to the described LED light fixture of claim 1 luminous efficiency proving installation, it is characterized in that described large-area matrix type lumen photodetection module closely arranged by the silicon single crystal photodetector of two slices centimetres of magnitudes and constitute at least.
5. according to the described LED light fixture of claim 4 luminous efficiency proving installation, it is characterized in that covering is provided with luminosity function coupling light filter and neutral variable optical attenuator on described each sheet silicon single crystal photodetector.
6. according to the described LED light fixture of claim 5 luminous efficiency proving installation, it is characterized in that described luminosity function coupling light filter is coloured glass or the resistant to elevated temperatures coloured polyester film that is complementary with transmitted spectrum, but also the applied optics film plating process is made.
7. according to the described LED light fixture of claim 5 luminous efficiency proving installation, it is characterized in that described neutral variable optical attenuator is neutral light intensity attenuation glass or adopts the surface to have the high grid that absorbs the black paint proper density, but also the applied optics film plating process is made.
8. according to the described LED light fixture of claim 4 luminous efficiency proving installation, it is characterized in that electrically insulated from one another between the silicon single crystal photodetector of described each matrix unit of large-area matrix type lumen photodetection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200776549U CN201429463Y (en) | 2009-06-30 | 2009-06-30 | Lumen efficiency test device of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200776549U CN201429463Y (en) | 2009-06-30 | 2009-06-30 | Lumen efficiency test device of LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201429463Y true CN201429463Y (en) | 2010-03-24 |
Family
ID=42033202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200776549U Expired - Fee Related CN201429463Y (en) | 2009-06-30 | 2009-06-30 | Lumen efficiency test device of LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201429463Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252829A (en) * | 2011-04-25 | 2011-11-23 | 北京大学 | Method for measuring internal quantum efficiency and light extraction efficiency of LED |
| CN102507150A (en) * | 2011-10-20 | 2012-06-20 | 上海太阳能电池研究与发展中心 | On-line real-time detection device of optical parameters, color parameters and electrical parameters of light emitting diode (LED) lamp |
| CN103743544A (en) * | 2013-12-23 | 2014-04-23 | 常州市武进区半导体照明应用技术研究院 | Thermal matching detection method of LED module group and light fixture and assembling method thereof |
| CN109297592A (en) * | 2018-11-14 | 2019-02-01 | 北京敏视达雷达有限公司 | A kind of method and relevant apparatus of stabilized light source |
-
2009
- 2009-06-30 CN CN2009200776549U patent/CN201429463Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252829A (en) * | 2011-04-25 | 2011-11-23 | 北京大学 | Method for measuring internal quantum efficiency and light extraction efficiency of LED |
| CN102252829B (en) * | 2011-04-25 | 2013-03-06 | 北京大学 | Method for measuring internal quantum efficiency and light extraction efficiency of LED |
| CN102507150A (en) * | 2011-10-20 | 2012-06-20 | 上海太阳能电池研究与发展中心 | On-line real-time detection device of optical parameters, color parameters and electrical parameters of light emitting diode (LED) lamp |
| CN103743544A (en) * | 2013-12-23 | 2014-04-23 | 常州市武进区半导体照明应用技术研究院 | Thermal matching detection method of LED module group and light fixture and assembling method thereof |
| CN103743544B (en) * | 2013-12-23 | 2016-04-06 | 常州市武进区半导体照明应用技术研究院 | A kind of LED module and the hot matching detection method of light fixture and assembly method thereof |
| CN109297592A (en) * | 2018-11-14 | 2019-02-01 | 北京敏视达雷达有限公司 | A kind of method and relevant apparatus of stabilized light source |
| CN109297592B (en) * | 2018-11-14 | 2021-06-29 | 北京敏视达雷达有限公司 | Method for stabilizing light source and related device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101581770B (en) | Method for testing lumen efficiency of LED lamps | |
| CN101290340B (en) | LED solar simulator | |
| CN101430223B (en) | LED instantaneous light flux test method and apparatus in PWM activation technology | |
| CN103267588B (en) | Junction temperature testing method based on temperature variation of LED (light-emitting diode) relative spectrum | |
| CN201212842Y (en) | Large power LED junction temperature measurement device | |
| US8705023B2 (en) | Testing apparatus and method for testing light emitting diode lamp | |
| CN109839364A (en) | A kind of gas sensor probe and detection device based on multiple spot reflecting helix optical path | |
| US8670112B2 (en) | Testing apparatus for testing light emitting diode lamp and method for operating the same | |
| CN201429463Y (en) | Lumen efficiency test device of LED lamp | |
| CN103411702B (en) | The device of method non-cpntact measurement junction temperature of white LED is shifted using peak wavelength | |
| CN204514571U (en) | The photochromic space distribution testing apparatus of a kind of COB optical assembly | |
| CN101699235B (en) | Analysis and test system and test method for junction temperature of semiconductor lamp | |
| CN102507150A (en) | On-line real-time detection device of optical parameters, color parameters and electrical parameters of light emitting diode (LED) lamp | |
| CN202854290U (en) | Thermoelectric performance measuring apparatus | |
| CN208224466U (en) | A kind of quick LED lamp bead photoelectric parameter integrated test system | |
| CN107976632B (en) | Photoelectric conversion efficiency testing device and method | |
| CN106061046A (en) | Underwater illumination lamp based on transmission turbidity measurement principle, and light adjustment method for underwater illumination lamp | |
| CN117664860A (en) | Semi-integrating sphere type LED spectrum adjustable light source device | |
| CN203376143U (en) | LED lamp temperature characteristic detection device | |
| KR20120078595A (en) | An apparatus and a method for measuring automatically optical properties of a led module using a integrating sphere | |
| CN201600237U (en) | Light source test device | |
| CN208313829U (en) | Light source intensity adjustable multiband transmission light information acquisition device | |
| CN103605085A (en) | LED thermal characteristic test method based on structure function | |
| CN201828524U (en) | Colorimetric system based on LED (light-emitting diode) lamp multi-light-path switching | |
| MX2012009654A (en) | Portable spectrophotometer and method for characterising solar collector tubes. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20160630 |