CN104459510A - LED array junction temperature quick on-line detecting device - Google Patents
LED array junction temperature quick on-line detecting device Download PDFInfo
- Publication number
- CN104459510A CN104459510A CN201410802751.5A CN201410802751A CN104459510A CN 104459510 A CN104459510 A CN 104459510A CN 201410802751 A CN201410802751 A CN 201410802751A CN 104459510 A CN104459510 A CN 104459510A
- Authority
- CN
- China
- Prior art keywords
- light
- led array
- junction temperature
- led
- detecting unit
- 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.)
- Granted
Links
Landscapes
- Spectrometry And Color Measurement (AREA)
Abstract
The invention relates to an LED array junction temperature quick on-line detecting device which comprises a driving current source, a temperature control box, a light obtaining unit, a multi-spectral-information detecting unit and a computer. The driving current source provides driving currents with different pulse widths and amplitude values needed by detecting for an LED array. The temperature control box provides controllable environment temperature for the LED array. The light obtaining unit is designed to be in three modes. The light obtaining unit obtains jam-free light between a plurality of light sources in the LED array and provides the jam-free light for the multi-spectral-information detecting unit. LED junction temperature is detected through spectroscopy, and the spectral information of the light sources is obtained and is transmitted to the computer. The computer carries out analysis and processing, and the corresponding junction temperature of the detected LED array is obtained. The LED array junction temperature detecting device is small, portable, low in cost and suitable for carrying out on-line quick detecting on LED array product junction temperature on a production line, and the device can be used for carrying out quick and accurate spectrum detection on other multiple light source points.
Description
Technical field
The present invention relates to a kind of miniaturization LED photovoltaic pick-up unit, specifically a kind of LED array junction temperature quick online detection device.
Background technology
At present, large power white light LED, as a kind of New Solid lighting source, is compared with fluorescent light with traditional incandescent lamp, halogen tungsten lamp, has energy-conserving and environment-protective, volume is little, the life-span is long, the plurality of advantages such as anti-vibration, instantaneous starting.Large power white light LED becomes the development trend of modern illumination, is more and more widely used in the various lighting fields such as room lighting, road lighting, automotive lighting, floodlighting and plaza lighting, has boundless development prospect.But the electric energy of input LED, all can not change into light, only have an appointment 30% can be converted into luminous energy release, the energy of about 70% is also had to be converted into heat energy, this part heat energy needs to be gone out by heat transfer or heat radiation, if it is bad that the radiator structure of chip does, the heat that PN junction produces can not shed in time, and the temperature of chip will raise rapidly.LED junction temperature raises, and not only can affect the photochromic electrical quantity of device, affect light efficiency, more seriously can affect the life and reliability of LED.
Conventional LED junction temperature detection method can be divided into two large classes: contact type measurement and non-contact measurement.For tens of LED shaped article to hundreds of LED strip parallel-connection structures, its distinguishing feature is that power consumption is large, heat is concentrated, junction temperature is high.The principal element affecting heavy-power LED product property indices (as luminescence efficiency, luminosity, colourity etc.) is the working junction temperature of each chip in LED product under duty, is also the key factor affecting LED product reliability and serviceable life.Therefore, in Measurement accuracy LED product, the junction temperature of each chip has important practical significance.Because work heat dissipation environment when LED works independently is not identical with its working environment in the LED product of series parallel structure, therefore cannot directly with the working junction temperature of the single LEDs working junction temperature as LED under series parallel structure, directly in LED product, online detection must be carried out to the working junction temperature of each chip of LED, effectively could predict its mission life, if when using the forward voltage method in contact junction temperature detection method or inverse current method to detect each LED junction temperature in LED array, need to carry out contact type measurement to single LEDs, destroy integrality when LED array normally works and work heat dissipation environment, the junction temperature of each single LEDs when its test result also accurately cannot reflect that LED lamp normally works.Therefore, forward voltage method and inverse current method are not all suitable for detecting each junction temperature of chip in LED array.
In disclosed in Dec, 2009 China " a kind of detection method of LED illumination lamp chips junction temperature ", (application number is 200910055335.2), this technology carries out junction temperature measurement by the luminescence feature detecting LED with the rule of variations injunction temperature, compared to contact junction temperature measurement method, ensure that the integrality of LED array in testing process, be more suitable for the junction temperature detecting each LED chip in LED array.But how to obtain the spectral information without crosstalk of each LED fast, need to study.
Be in " the LED lamp junction temperature measurement device " of 201110307991.4 in China Patent No., also disclose and adopt the method detecting spectrum to carry out junction temperature detection, this device adopts the corresponding LEDs of an optical fiber, luminous for LED institute collection is entered single channel spectrometer, when the luminescent spectrum of disposable acquisition four LEDs, just need 4 spectrometers, then go to control optical fiber by physical construction and move, obtain the luminescent spectrum of other LED in array.This apparatus structure is complicated, with high costs, is unfavorable for the production application of low cost and obtains the result of detection fast.
Summary of the invention
The object of the invention is to overcome current LED array junction temperature detection device complex structure, deficiency with high costs, and provide one can solve Problems existing in existing junction temperature detection device, and structure is simple, cost is low, accurately fast, efficiently portable miniaturization LED array junction temperature quick online detection device.
To achieve these goals, the technical measures that the present invention takes are: provide a kind of LED array junction temperature quick online detection device, comprise drive current source, temperature control box, light acquiring unit, multispectral information detecting unit and computing machine, described drive current source provides the drive current of the different pulse widths needed for detection, different amplitude for LED array; Described temperature control box provides controlled environment temperature for LED array, and described light acquiring unit is designed with three kinds of forms, is respectively light acquiring unit X, light acquiring unit Y, light acquiring unit Z; In light acquiring unit acquisition LED array, glitch-free light between plurality of LEDs light source, is supplied to multispectral information detecting unit; Described multispectral information detecting unit utilizes spectroscopic methodology to carry out junction temperature detection, obtains the spectral information of each light source, is sent in computing machine by transmission line by the spectral information of CCD by interface; Described computing machine draws the spectral information of the corresponding junction temperature of detected LED array after being undertaken analyzing and process by software.
Described light acquiring unit X is made up of the diaphragm sequentially arranged, collimating mirror, cemented doublet A, positive lens and cemented doublet head B, the light that many aligned LED array send is after diaphragm, collimating mirror, transmission-type cemented doublet A, positive lens, transmission-type cemented doublet B, the light sent by LED array reduces the size being condensed to applicable spectral information detecting unit and detecting, be supplied to the multispectral information detecting unit of LED, reduce in the process of optically focused and do not produce crosstalk between LED luminescent spectrum.
Described light acquiring unit Y is made up of parabolic mirror, plane mirror, ellipsoidal mirror M, ellipsoidal mirror N, the light that LED array sends after the light source colimated light system be made up of parabolic mirror and ellipsoidal mirror with parallel light emergence, each road light, in the process of reflection, does not produce crosstalk each other; Beam-expanding system again through being made up of ellipsoidal mirror M and ellipsoidal mirror N, the spacing of multi beam directional light is narrowed down to the size that applicable spectral information detecting unit detects by beam-expanding system, and the process ZhongLEDGe road light reducing optically focused does not produce crosstalk each other.
Described light acquiring unit Z adopts the All-in-One bifurcation fiber adding diaphragm, arranges be supplied to the multispectral information detecting unit of LED by becoming a line after LED institute emission collection.
Described multispectral information detecting unit is disposable is undertaken 1 ~ 16 LEDs light source collimating, light splitting, after focusing, spectrum face presents the spectral information of non-interfering multiple light courcess; The light-sensitive surface of charge coupled device ccd is placed on the imaging spectral face of grating by described multispectral information detecting unit, obtains the spectral information of multiple light courcess.
Described multispectral information detecting unit adopts full frame transfevent surface array charge-coupled device CCD, gathers spectral information, or and in input path, adds the break-make that electronic shutter controls light path.
In LED array described in the present invention, each light source point is carried out a row close-packed arrays at output terminal by LED chip light acquiring unit after light obtains, and each light source point of output terminal does not produce crosstalk, then send into the multispectral information detecting unit of LED and carry out the disposable detection of spectrum.
Multispectral information detecting unit described in the present invention main beam splitter used is flattened field concave grating, CCD used is the CCD of full frame transfevent, the switch of light-path is controlled by mechanical shutter, when shutter is opened time, CCD carries out photosensitive to light signal, time shutter closes, CCD carries out Charger transfer, can obtain the spectral information of LED multi-path like this.
In technical scheme of the present invention, the spectral information of CCD is sent in computing machine by interface, after computer software processes, draws the spectral information that corresponding LED is luminous, utilize spectroscopic methodology to carry out junction temperature analysis and detection.
LED array junction temperature quick online detection device beneficial effect of the present invention is:
1. the invention provides a kind of LED array junction temperature detection device of portable, low cost, be conducive to that junction temperature is fast carried out to the LED array product on production line and detect, the application of each size LED manufacturer can be popularized.
2. pick-up unit of the present invention can disposable by the spectral information of multiple light courcess point without crosstalk ground dispersion (Dispersion) on area array CCD, CCD once reads the spectral information that can obtain multiple light courcess point, therefore also can be used for carrying out spectral detection fast and accurately to other multiple light courcess point.
Accompanying drawing explanation
Fig. 1 is LED array junction temperature quick online detection apparatus structure schematic diagram of the present invention.
Fig. 2 is the structural representation of the present invention a kind of smooth acquiring unit X used.
Fig. 3 is the structural representation of the present invention a kind of smooth acquiring unit Y used.
Fig. 4 is the structural representation of the present invention a kind of smooth acquiring unit Z used.
Fig. 5 is the light path schematic diagram of optical spectroscopic element used in the multispectral information detecting unit of the present invention.
Fig. 6 is that smooth acquisition device of the present invention is incident at six road optical fiber the spectrum picture that CCD produces simultaneously.
Fig. 7 be under pulsed drive of the present invention LED light spectrum peak wavelength with variations injunction temperature figure.
In above-mentioned figure: 1-LED array, 2-temperature control box, 3-light acquiring unit, the multispectral information detecting unit of 4-, 5-transmission line, 6-computing machine, 7-drive current source; 11-diaphragm, 12-collimating mirror, 13-cemented doublet A, 14-positive lens, 15-cemented doublet B; 21-parabolic mirror, 22-plane mirror, 23-ellipsoidal mirror M, 24-ellipsoidal mirror N; 31-cylindrical diaphragm, 32-head fibre cladding, 33-quartz bare fibre, 34-afterbody fibre cladding; 40-optical spectroscopic element, 41-electronic shutter, 42-first slit, 43-second slit, 44-light source information one, 45-light source information two.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but enforcement of the present invention is not limited thereto.
Embodiment 1: the invention provides a kind of LED array junction temperature quick online detection device, its structure as shown in Figure 1.Comprise drive current source 7, temperature control box 2, light acquiring unit 3, multispectral information acquisition unit 4 and computing machine 6.Described drive current source 7 provides the drive current of the different pulse widths needed for detection, different amplitude for LED array 1; Described temperature control box 2 provides controlled environment temperature for LED array 1, LED array light acquiring unit 3 to obtain in LED array glitch-free light between 6 LEDs illuminating sources, then multispectral information detecting unit 4 is supplied to, obtain the spectral information of 6 LEDs illuminating sources, by transmission line 5, the spectral information of CCD is sent in computing machine 6 by interface; Computing machine draws the spectral information of the corresponding junction temperature of detected LED array after carrying out the analysis and treament of spectral information by software.
In the embodiment of the present invention, light acquiring unit 3 takes light acquiring unit X as shown in Figure 2, as a kind of technical scheme, light acquiring unit 3 adopts transmission-type image forming job principle, be made up of the diaphragm 11 sequentially arranged, collimating mirror 12, cemented doublet A13, positive lens 14 and cemented doublet B15, the light that 6 aligned LEDs send is reduced the size being condensed to applicable multispectral information detecting unit 4 and detecting, reduce in the process of optically focused and do not produce crosstalk between LED luminescent spectrum.
In the embodiment of the present invention, in multispectral information detecting unit 4, optical spectroscopic element 40 used is flattened field concave grating, as shown in Figure 5.Input path is added the break-make that electronic shutter 41 controls light path.When electronic shutter 41 is opened, the light that the multiple light courcess at slit place sends as the first slit 42, second slit 43 etc. carries out collimating through optical spectroscopic element 40, light splitting, after focusing, spectrum face presents the spectral information of the multiple light courcess of not crosstalk mutually as light source information 1, light source information 2 45 etc., in the embodiment of the present invention, CCD used is total-frame transfer type matrix CCD.Total-frame transfer type matrix CCD is placed on the imaging spectral face of grating, opto-electronic conversion can be carried out to the spectral information of multiple light courcess, close electronic shutter 41, when entering total-frame transfer type matrix CCD without spectral information, the charge signal transfer on total-frame transfer type matrix CCD exports, uploads in computing machine 6.
Embodiment 2: the invention provides a kind of LED array junction temperature quick online detection device, its structure as shown in Figure 1.Unlike in the embodiment of the present invention, light acquiring unit 3 takes light acquiring unit Y as shown in Figure 3, is made up of parabolic mirror 21, ellipsoidal mirror 22, ellipsoidal mirror M23 and ellipsoidal mirror N24.The light that LED array 1 sends is with parallel light emergence after the light source colimated light system be made up of parabolic mirror 21 and ellipsoidal mirror 22, and each road light, in the process of reflection, does not produce crosstalk each other.Beam-expanding system again through being made up of ellipsoidal mirror M23 and ellipsoidal mirror N24, the spacing of multi beam directional light is narrowed down to the size that applicable multispectral information detecting unit 4 detects by beam-expanding system, and the process ZhongLEDGe road light reducing optically focused does not produce crosstalk each other.In the embodiment of the present invention, take frame transfer type area array CCD, spectral information is gathered, because frame transfer type CCD is with electric charge storage region, therefore in the technical program, do not need electronic shutter 41 to control the shutoff of light path.
Embodiment 3: the invention provides a kind of LED array junction temperature quick online detection device, its structure as shown in Figure 1.Unlike in the present embodiment, light acquiring unit 3 takes light acquiring unit Z as shown in Figure 4, uses the six directions one bifurcation fiber.There are 6 head fibre-optical splices the six directions one bifurcation fiber one end, and each head fibre-optical splice, as shown in below enlarged drawing on the left of Fig. 4, comprises head fibre cladding 32, comprises a quartzy bare fibre 33 in head fibre cladding 32; The other end of the six directions one bifurcation fiber only has an afterbody fibre-optical splice, and afterbody fibre-optical splice, as shown in enlarged drawing on the right side of Fig. 4, comprises 6 vertical, compact arranged quartzy bare fibres 33 in afterbody fibre cladding 34.In the present embodiment, LED array 1 can arrange by distributing, and the light signal that LED sends, after cylindrical diaphragm 31, enters 6 head fibre-optical splices of the six directions one bifurcation fiber, when the other end (afterbody) outgoing of the six directions one bifurcation fiber, become the compact arranged light signal of row.In technical scheme of the present invention, multispectral information detecting unit 4 one-tenth one is arranged compact arranged light signal carry out light splitting after one-time imaging on CCD pixel, each spectral information can good discrimination in CCD image planes.Become a line to arrange by after LED institute emission collection, between optical fiber, spacing reduces, and fiber outlet is placed on the optical slot place of grating.
As shown in Figure 6, Fig. 6 be 6, slit place arbitrary source after optical spectroscopic element 40 on total-frame transfer type matrix CCD formed energygram, respective wavelength place gray scale is larger, and this wavelength place energy is higher.
In the present embodiment, 70 DEG C are increased to gradually by 30 DEG C by the environment temperature increment in units of 10 DEG C changing temperature control box 2, the curve that the peak wavelength that can obtain the luminescent spectrum of 6 tunnel independence LED increases with environment temperature, as shown in Figure 7, in Fig. 7, horizontal ordinate is environment temperature (DEG C), and ordinate is peak wavelength (nm).
Claims (6)
1. a LED array junction temperature quick online detection device, comprise drive current source, temperature control box, light acquiring unit, multispectral information detecting unit and computing machine, it is characterized in that: described drive current source provides the drive current of the different pulse widths needed for detection, different amplitude for LED array; Described temperature control box provides controlled environment temperature for LED array, and described light acquiring unit is designed with three kinds of forms, is respectively light acquiring unit X, light acquiring unit Y, light acquiring unit Z; In light acquiring unit acquisition LED array, glitch-free light between plurality of LEDs light source, is supplied to multispectral information detecting unit; Described multispectral information detecting unit utilizes spectroscopic methodology to carry out junction temperature detection, obtains the spectral information of each light source, is sent in computing machine by transmission line by the spectral information of CCD by interface; Described computing machine draws the spectral information of the corresponding junction temperature of detected LED array after being undertaken analyzing and process by software.
2. LED array junction temperature quick online detection device according to claim 1, it is characterized in that: described light acquiring unit X is by the diaphragm sequentially arranged, collimating mirror, cemented doublet A, positive lens and cemented doublet head B form, the light that many aligned LED array send is through diaphragm, collimating mirror, transmission-type cemented doublet A, positive lens, after transmission-type cemented doublet B, the light sent by LED array reduces the size being condensed to applicable spectral information detecting unit and detecting, be supplied to the multispectral information detecting unit of LED, reduce in the process of optically focused and do not produce crosstalk between LED luminescent spectrum.
3. LED array junction temperature quick online detection device according to claim 1, it is characterized in that: described light acquiring unit Y is made up of parabolic mirror, plane mirror, ellipsoidal mirror M, ellipsoidal mirror N, the light that LED array sends after the light source colimated light system be made up of parabolic mirror and ellipsoidal mirror with parallel light emergence, each road light, in the process of reflection, does not produce crosstalk each other; Beam-expanding system again through being made up of ellipsoidal mirror M and ellipsoidal mirror N, the spacing of multi beam directional light is narrowed down to the size that applicable spectral information detecting unit detects by beam-expanding system, and the process ZhongLEDGe road light reducing optically focused does not produce crosstalk each other.
4. LED array junction temperature quick online detection device according to claim 1, it is characterized in that: described light acquiring unit Z adopts the All-in-One bifurcation fiber adding diaphragm, arrange becoming a line after LED institute emission collection and be supplied to the multispectral information detecting unit of LED.
5. LED array junction temperature quick online detection device according to claim 1, it is characterized in that: described multispectral information detecting unit is disposable is undertaken 1 ~ 16 LEDs light source collimating, light splitting, after focusing, spectrum face presents the spectral information of non-interfering multiple light courcess; The light-sensitive surface of charge coupled device ccd is placed on the imaging spectral face of grating by described multispectral information detecting unit, obtains the spectral information of multiple light courcess.
6. LED array junction temperature quick online detection device according to claim 1, it is characterized in that: described multispectral information detecting unit adopts full frame transfevent surface array charge-coupled device CCD, spectral information is gathered, or and in input path, adds the break-make that electronic shutter controls light path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802751.5A CN104459510B (en) | 2014-12-18 | 2014-12-18 | A kind of LED array junction temperature quick online detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802751.5A CN104459510B (en) | 2014-12-18 | 2014-12-18 | A kind of LED array junction temperature quick online detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104459510A true CN104459510A (en) | 2015-03-25 |
| CN104459510B CN104459510B (en) | 2018-05-11 |
Family
ID=52905869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410802751.5A Expired - Fee Related CN104459510B (en) | 2014-12-18 | 2014-12-18 | A kind of LED array junction temperature quick online detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104459510B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015134A (en) * | 2017-05-23 | 2017-08-04 | 山东大学 | A kind of test system of LED light Electrothermal Properties and its application |
| CN107024648A (en) * | 2017-04-17 | 2017-08-08 | 东南大学 | LED junction temperature measurement device and method based on impulse method |
| CN107560753A (en) * | 2017-09-28 | 2018-01-09 | 清华大学 | Vehicle axles single-point temperature measuring equipment and method based on visible ray and infrared multispectral |
| CN107560737A (en) * | 2017-09-28 | 2018-01-09 | 清华大学 | A kind of vehicle axles multiple point temperature measurement device and method based on infrared multispectral |
| CN107782453A (en) * | 2017-09-28 | 2018-03-09 | 清华大学 | Vehicle axles multiple point temperature measurement device and method based on visible ray and infrared multispectral |
| CN108169847A (en) * | 2018-03-13 | 2018-06-15 | 杭州艾芯智能科技有限公司 | A kind of large field of view scan imaging optical system |
| CN108414915A (en) * | 2018-06-13 | 2018-08-17 | 苏州晶品新材料股份有限公司 | The lossless real-time chip of LED light source can debate measuring device |
| CN108680849A (en) * | 2018-07-06 | 2018-10-19 | 中国电子技术标准化研究院 | A kind of measurement method and device of electronic device junction temperature |
| CN109596963A (en) * | 2018-12-18 | 2019-04-09 | 中国电子科技集团公司第十三研究所 | It is a kind of for detecting the impulse modulation device of junction temperature |
| WO2019237414A1 (en) * | 2018-06-13 | 2019-12-19 | 苏州晶品新材料股份有限公司 | Lossless real-time measurement method for junction temperature of led light source |
| TWI696823B (en) * | 2018-08-02 | 2020-06-21 | 南韓商宰體有限公司 | Slit light source and vision inspection apparatus having the same |
| CN113390612A (en) * | 2021-06-04 | 2021-09-14 | 盐城东紫光电科技有限公司 | MiniLED detection equipment with point-to-point multi-optical-path optical component |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269858A (en) * | 2010-06-02 | 2011-12-07 | 北京智朗芯光科技有限公司 | Automatic focusing system and automatic focusing method |
| CN103134591B (en) * | 2011-12-02 | 2016-05-04 | 北京智朗芯光科技有限公司 | Nearly vertical incidence wideband polarization spectrometer and optical measuring system |
| CN103175624A (en) * | 2011-12-22 | 2013-06-26 | 中国计量学院 | Non-contact LED junction temperature measurement method and device |
| CN104019908A (en) * | 2014-06-16 | 2014-09-03 | 常州工学院 | LED junction temperature or average LED array junction temperature measuring method |
-
2014
- 2014-12-18 CN CN201410802751.5A patent/CN104459510B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024648A (en) * | 2017-04-17 | 2017-08-08 | 东南大学 | LED junction temperature measurement device and method based on impulse method |
| CN107015134B (en) * | 2017-05-23 | 2019-08-09 | 山东大学 | A kind of test macro and its application of LED light Electrothermal Properties |
| CN107015134A (en) * | 2017-05-23 | 2017-08-04 | 山东大学 | A kind of test system of LED light Electrothermal Properties and its application |
| CN107560737A (en) * | 2017-09-28 | 2018-01-09 | 清华大学 | A kind of vehicle axles multiple point temperature measurement device and method based on infrared multispectral |
| CN107782453A (en) * | 2017-09-28 | 2018-03-09 | 清华大学 | Vehicle axles multiple point temperature measurement device and method based on visible ray and infrared multispectral |
| CN107560753B (en) * | 2017-09-28 | 2024-01-09 | 清华大学 | Vehicle wheel axle single-point temperature measuring device and method based on visible light and infrared multispectral |
| CN107560753A (en) * | 2017-09-28 | 2018-01-09 | 清华大学 | Vehicle axles single-point temperature measuring equipment and method based on visible ray and infrared multispectral |
| CN108169847A (en) * | 2018-03-13 | 2018-06-15 | 杭州艾芯智能科技有限公司 | A kind of large field of view scan imaging optical system |
| CN108414915A (en) * | 2018-06-13 | 2018-08-17 | 苏州晶品新材料股份有限公司 | The lossless real-time chip of LED light source can debate measuring device |
| WO2019237416A1 (en) * | 2018-06-13 | 2019-12-19 | 苏州晶品新材料股份有限公司 | Led light source nondestructive real-time chip visual measuring device |
| WO2019237414A1 (en) * | 2018-06-13 | 2019-12-19 | 苏州晶品新材料股份有限公司 | Lossless real-time measurement method for junction temperature of led light source |
| CN108680849A (en) * | 2018-07-06 | 2018-10-19 | 中国电子技术标准化研究院 | A kind of measurement method and device of electronic device junction temperature |
| CN108680849B (en) * | 2018-07-06 | 2024-03-22 | 中国电子技术标准化研究院 | Method and device for measuring junction temperature of electronic device |
| TWI696823B (en) * | 2018-08-02 | 2020-06-21 | 南韓商宰體有限公司 | Slit light source and vision inspection apparatus having the same |
| CN109596963B (en) * | 2018-12-18 | 2021-09-21 | 中国电子科技集团公司第十三研究所 | Pulse modulation device for detecting junction temperature |
| CN109596963A (en) * | 2018-12-18 | 2019-04-09 | 中国电子科技集团公司第十三研究所 | It is a kind of for detecting the impulse modulation device of junction temperature |
| CN113390612A (en) * | 2021-06-04 | 2021-09-14 | 盐城东紫光电科技有限公司 | MiniLED detection equipment with point-to-point multi-optical-path optical component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104459510B (en) | 2018-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104459510A (en) | LED array junction temperature quick on-line detecting device | |
| CN205539686U (en) | Burnt spectromicroscope of small -size scanning copolymerization | |
| US8823406B2 (en) | Systems and methods for simultaneous optical testing of a plurality of devices under test | |
| CN204301972U (en) | A kind of device testing LED chip optical property parameter | |
| CN100592095C (en) | LED parameter test method | |
| CN101566500A (en) | Device and method for testing LED light source intensity space distribution characteristic | |
| CN104330172B (en) | A kind of wavefront measurement chip based on electrically-controlled liquid crystal convergence lenticule | |
| CN102798515B (en) | Light fixture spatial spectral distribution rapid measurement device and method | |
| CN201229204Y (en) | LED light source intensity space distribution characteristic test device | |
| CN206772438U (en) | Absorption and fluorescence spectrum detecting device based on mobile intelligent terminal | |
| CN103175624A (en) | Non-contact LED junction temperature measurement method and device | |
| CN102495040B (en) | Raman spectrometer chip adopting arrayed waveguide grating | |
| CN103592590B (en) | The test macro that a kind of LED component photoelectric heat is integrated and method | |
| CN109507158A (en) | Fluorescence signal detection device and method | |
| CN102768199A (en) | Miniature spectrograph for rapidly measuring material transmittance or reflectivity | |
| CN108188042A (en) | Apply the full-automatic online light transmittance detecting system in Mobile phone screen glass production line | |
| KR101380700B1 (en) | A test table with solar cells for light-emitting components and a test method thereof | |
| CN111323408A (en) | External quantum efficiency detection system and detection method for light emitting element under micro-area | |
| CN103558558B (en) | A kind of silicon solar cell conversion efficiency detection device and detection method | |
| CN110736425B (en) | Laser projection point coordinate measuring device and measuring method thereof | |
| TWI740416B (en) | Light source device and instant uniformity monitoring system for a light source device | |
| CN115291071A (en) | LED array photo-thermal integrated detection device and method based on phase-locked amplifier | |
| CN212255079U (en) | External quantum efficiency detection system of light emitting component under micro-area | |
| CN101114027A (en) | Compound eye lens detector | |
| CN108195468A (en) | Micro spectrometer based on photonic crystal light-dividing principle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 Termination date: 20201218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |