CN203479981U - LED characteristic test experiment apparatus - Google Patents
LED characteristic test experiment apparatus Download PDFInfo
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- CN203479981U CN203479981U CN201320559091.3U CN201320559091U CN203479981U CN 203479981 U CN203479981 U CN 203479981U CN 201320559091 U CN201320559091 U CN 201320559091U CN 203479981 U CN203479981 U CN 203479981U
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000002474 experimental method Methods 0.000 title claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 238000005286 illumination Methods 0.000 claims abstract description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 17
- 230000003595 spectral effect Effects 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
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- 239000003086 colorant Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
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- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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Abstract
The utility model provides a LED characteristic test experiment apparatus. A power supply, a circuit and an optical path are integrated in one box body. A power supply area on an experiment table surface comprises a direct current interface, a constant current source output interface, a constant current source adjusting knob, a high voltage source output interface and a high voltage source adjusting knob. A circuit area comprises a circuit area power supply interface, a connection port of a resistor unit, a variable resistor unit, a resistor adjusting knob, a PWM pulse output interface, a PWM adjusting knob and a current adjusting knob. An instrument area comprises an instrument area power supply interface, a voltmeter, a voltmeter input interface, a voltage shift switch, an ammeter, an ammeter input interface, a current shift switch, an illuminometer header, an illumination value input interface, an illumination shift switch and an illuminometer zero setting knob. An optical path area comprises a fixed sleeve supporting seat, a precision rotating platform pedestal and an input interface of a light emitting diode. Various kinds of power supplies, a constant current source and a pulse generator in the box body are connected with corresponding interfaces on the experiment table surface. A light source and a light detector assembly are installed on the supporting seat.
Description
Technical field
The utility model relates to a kind of LED characteristic test experimental device, from ABC angles such as the operating voltage of research LED luminous light intensity, LED and electric currents, be used for carrying out LED forward, oppositely, the test experiments of angle, spectrum and time resolution characteristics.
Background technology
Semiconductor light-emitting-diode (LED) is a kind of important optoelectronic device, and it all has application very widely in scientific research and industrial and agricultural production.Though light emitting diode is little, a not easy thing of its every light of Measurement accuracy and radiation parameter.At present, test worldwide comparison also has larger difference.Given this, CIE (International Commission on Illumination) TC2-34 group is studied this, and the technical report proposing has formed CIE127-1997 file.Photoelectric device specialty branch of Chinese Optical photoelectron employer's organization, according to actual conditions domestic and that industry is inner, has tentatively formulated industry standard " LED test method ", and the portion in industry of rising for 2002 tries.The method of testing relating to is applicable to ultraviolet/visible light/infrarede emitting diode and assembly thereof, and its chip testing can be with reference to carrying out.
At present, in teaching, be badly in need of a kind of experimental provision and do LED characteristic test experiment to student, make student by theory and practice combination.By the forward of test LED, oppositely, angle, spectrum and time resolution characteristics, allow student understand and be familiar with LED correlation properties and method of testing thereof.
Summary of the invention
The purpose of this utility model is to provide a kind of LED characteristic test experimental device, can conveniently test the forward of LED, oppositely, angle, spectrum and time resolution characteristics, understand and be familiar with LED correlation properties and method of testing thereof.
The technical solution of the utility model is: a kind of LED characteristic test experimental device of the present utility model comprises power unit, circuit part, instrument part and light path part, its power unit, circuit part and light path part are integrated in a casing, on casing experiment table top, arrange power supply area, circuit region, gauge field and light path district; Power supply area comprise ± 5V direct supply interface, constant current source output interface and constant current source adjusting knob, high-voltage power supply output interface and high-voltage power supply adjusting knob thereof; Circuit region comprises connector, variohm unit and resistor adjusting knob thereof, pwm pulse output interface, PWM adjusting knob, the current adjusting knob of circuit region power interface, resistance unit; Gauge field comprises gauge field power interface, voltage table, voltage table input interface, voltage Gear-shift switch, reometer, reometer input interface and electric current Gear-shift switch, illuminometer gauge outfit, brightness value input interface, illumination Gear-shift switch and illuminometer zeroing knob; Light path district comprises the input interface of fixed muffle bearing, precision rotation platform base, light emitting diode; In casing, have various power supplys, constant current source, pulse producer to connect with interface corresponding on casing experiment table top, light source is arranged on precision rotation platform base by light source bracket, and optical detector component is arranged on fixed muffle bearing.
Described optical detector component comprises the Shi Guang entrance port, one end of long sleeve, long sleeve, and the other end is photodetection output interface, and photodetection output interface has end cap, and there are diaphragm or the detachable interface of color filter in place, light entrance port; Light source is arranged on light source sleeve, has the standard output interface of light emitting diode on light source bracket.
Described circuit region and light path district are arranged on same panel.
Advantage of the present utility model: LED characteristic test experimental device adopts modular construction, experimental interface is open, and student can carry out wiring according to experiment content, can cultivate student's manipulative ability; Experimental section is from understanding and be familiar with the fundamental characteristics of LED, and the technical problem underlying about the operating voltage of the luminous light intensity of LED, LED and electric current, the test of LED fundamental characteristics is discussed.Main knowledge point comprises LED forward characteristic and test ABC thereof, LED reverse characteristic and test ABC, LED angular characteristics and test ABC, spectrum and time resolution characteristics and test ABC thereof etc.
Wiring in experimentation, adjusting, observation and record are all very convenient.By regulating and operation experiments device, student can carry out to the various characteristics of LED the test of quantitative and qualitative analysis.
LED characteristic test experimental device adopts special optical component and optical texture, and measuring accuracy is guaranteed, operates more convenient; When showing output voltage, electric current and brightness value, adopt special digital voltage table integrated, the instrument module of reometer, luxmeter, improved stability and the reliability measured.Experimental provision except thering is basic LED characteristic test function, compatible with LED spectral characteristic test function simultaneously.The ability of the utility model attention to training student's theory and practice combination, can allow student understand and be familiar with principle of work and the fundamental characteristics of LED, and grasps the basic skills of LED characteristic test.
Accompanying drawing explanation
Fig. 1 is casing experiment table top schematic diagram of the present utility model.
Fig. 2 is that circuit region and light path district arrange schematic diagram on same panel.
Fig. 3 arranges schematic diagram on the panel of gauge field.
Fig. 4 is optical path component structural representation.
Fig. 5 is used the utility model to do experiment 1 circuit theory diagrams.
Fig. 6 is used the utility model to do experiment 2 circuit theory diagrams.
Fig. 7 is used the utility model to do experiment 3 circuit theory diagrams.
Fig. 8 is used the utility model to do experiment 4 circuit theory diagrams.
Fig. 9 is used the utility model to do experiment 5 circuit theory diagrams.
Embodiment
Fig. 3 as shown in Figure 1, Figure 2: a kind of LED characteristic test experimental device of the present utility model comprises power unit, circuit part, instrument part and light path part, power unit, circuit part and light path part are integrated in a casing, on casing experiment table top, arrange power supply area 1, circuit region 2, gauge field 3 and light path district 4, power supply area 1 comprise ± 5V direct supply interface 1-1, constant current source output interface 1-4 and constant current source adjusting knob 1-2, high-voltage power supply output interface 1-5 and high-voltage power supply adjusting knob 1-3 thereof; Circuit region 2 comprises connector 2-2, the variohm unit 2-3 of circuit region power interface 2-1, resistance unit and resistor adjusting knob 2-4, pwm pulse output interface 2-5, PWM adjusting knob 2-6, current adjusting knob 2-7; Gauge field 3 comprises gauge field power interface 3-1, voltage table 3-2, voltage table input interface 3-3, voltage Gear-shift switch 3-4, reometer 3-5, reometer input interface 3-6 and electric current Gear-shift switch 3-7, illuminometer gauge outfit 3-8, brightness value input interface 3-9, illumination Gear-shift switch 3-10 and illuminometer zeroing knob 3-11; Light path district 4 comprises the input interface 4-6 of fixed muffle bearing 4-1, precision rotation platform base 4-2, light emitting diode; In casing, have various power supplys, constant current source, pulse producer to connect with interface corresponding on casing experiment table top, light source 4-5 is arranged on precision rotation platform base 4-2 above by light source bracket 4-12 and optical detector component is arranged on fixed muffle bearing 4-1.
Described circuit region and light path district are arranged on same panel.
Fig. 4 is optical path component structural representation: optical detector component comprises Shi Guang entrance port, one end 4-8 of long sleeve 4-7, long sleeve 4-7, the other end is photodetection output interface 4-9, photodetection output interface has end cap 4-10, and there are diaphragm or the detachable interface 4-11 of color filter in 4-8 place, light entrance port; It is upper that light source 4-5 is arranged on light source sleeve 4-4, has the input interface 4-6 of light emitting diode on light source bracket 4-12.
Use the utility model to do the test of experiment 1, LED forward characteristic:
Experimental circuit schematic diagram is as Fig. 5: by the voltage table 3-2 on tested light emitting diode 5, gauge field 3, reometer 3-5, by circuit diagram, the output interface by separately and the constant current source interface 1-4 on power supply area 1 connect into circuit, and tested light emitting diode 5 forward volt-ampere characteristic test philosophies as shown in the figure.Electric current Gear-shift switch 3-7 is got to " 20mA " shelves, voltage Gear-shift switch 3-4 gets to " 2V " shelves or " 20V " shelves, slowly regulate clockwise constant current source adjusting knob 1-2, recording ammeter and voltage table reading, by drawing the forward volt-ampere characteristic of the tested light emitting diode of LED volt-ampere characteristic observable, by LED forward volt-ampere characteristic figure, can draw the forward voltage drop value of LED.
Use the utility model to do the test of experiment 2, LED reverse characteristic:
Experimental circuit schematic diagram is as Fig. 6: by the voltage table 3-2 on tested light emitting diode 5, gauge field 3, reometer 3-5, by circuit diagram, the output interface by separately and the 1M Ω resistance interface in high-voltage power supply interface 1-5, resistance unit 2-2 on power supply area 1 connect into circuit, and the reverse volt-ampere characteristic test philosophy of tested light emitting diode 5 as shown in the figure.Electric current Gear-shift switch 3-7 is got to " 200uA " shelves, voltage Gear-shift switch 3-4 gets to " 200V " shelves, slowly regulate clockwise high-voltage power supply adjusting knob 1-3, recording ammeter and voltage table reading, until voltage swing is increased to substantially constant or increases slowly, according to different current/voltage values, draw the reverse volt-ampere characteristic of LED, by the reverse volt-ampere characteristic figure of LED, can draw the breakdown reverse voltage of LED.
Use the utility model to do the test of experiment 3, LED angular characteristics:
Experimental circuit schematic diagram is as Fig. 7: by tested light emitting diode 5, voltage table 3-2 on gauge field 3, by circuit diagram, the output interface by separately and the constant current source output interface 1-4 on power supply area connect into circuit to reometer 3-5, optical detector component comprises that the photodetection output interface 4-9 on long sleeve 4-7 is connected with the illuminometer interface 3-9 on gauge field 3, adjust precision rotation platform 4-2, make mechanical axis and the long sleeve 4-7 of tested light emitting diode 5 coaxial, slowly regulate clockwise constant current source adjusting knob 1-2, making size of current is 10mA, the angle of adjustment precision universal stage, record illuminometer reading, according to the brightness value under different angles, draw LED Strength Space distribution curve, by the angular characteristics of LED Strength Space distribution curve observable LED, simultaneously, record LED mechanical axis corresponding angle registration θ corresponding to precision rotation platform when coaxial with detector sleeve
1, slowly the knob on adjustment precision universal stage, observes luxmeter registration and changes, angle registration θ corresponding to precision rotation platform when recording brightness value and be maximum I
2, i.e. deviation angle △ θ
2=∣ θ
2-θ
1∣, continue the knob on slow adjustment precision universal stage, observe luxmeter registration and change, corresponding angle registration θ when recording illumination and being I/2
3, i.e. θ
1/2=∣ θ
3-θ
1∣, can obtain LED half maximum intensity angle and deviation angle.
Use the utility model to do the test of experiment 4, LED spectral characteristic:
Experimental circuit schematic diagram is as Fig. 8: by the voltage table 3-2 on tested light emitting diode 5, gauge field 3, reometer 3-5, by circuit diagram, output interface and the constant current source output interface 1-4 by separately connects into circuit, optical detector component comprises that the photodetection output interface 4-9 on long sleeve 4-7 is connected with the illuminometer interface 3-9 on gauge field 3, and tested light emitting diode 5 spectral characteristic test philosophies as shown in the figure.Reometer is got to " 20mA " shelves, voltage table is got to " 2V " shelves or " 20V " shelves, slowly regulate clockwise constant current source adjusting knob 1-2, current value is adjusted to 15mA, read corresponding brightness value record, change different colours color filter, record corresponding brightness value, the spectral characteristic that the brightness value when recording different colours color filter is observed LED.
Use the utility model to do the test of experiment 5, LED time resolution characteristics:
Experimental circuit schematic diagram is as Fig. 9: the input interface 4-6 that the pwm pulse output interface 2-5 of circuit region is connect to light source LED, with the CH2 passage 6-2 of dual trace oscilloscope 6, meet the input interface 4-6 of light source LED, be used for testing LED power-on time T2, the CH1 passage 6-1 of dual trace oscilloscope 6 meets the output interface 4-9 of optical detector component long sleeve 4-7, being used for test probe receives the time T 1 of light signal, regulate clockwise PWM adjusting knob 2-6 and current adjusting knob 2-7 to bottom, make LED in the brightest state, regulate dual trace oscilloscope, make waveform stabilization on dual trace oscilloscope and clear, observe the waveform on dual trace oscilloscope, the phase differential of the ascent stage of contrast CH1 and CH2, the LED response time is the mistiming that LED power-on time T2 and detector receive light signal, time of 90% that detector is received to light signal strength that LED sends is as Measuring Time T1, the definition LED response time is: T=T1-T2, on oscillograph, can read response characteristic value correlation time.
Tested light emitting diode 5 on same axis, is mainly used to survey the luminous intensity of LED different angles with long sleeve 4-7.
The standard interface of have in test panel ± 5V power supply, constant current source, high-voltage power supply output; The display unit and the Gear-shift switch that above instrument module, have illuminometer, voltage table and reometer; The connector that has required resistance in various regulons, experiment in LED characteristic test module; In panel and each module, all jacks all adopt step socket No. two, and the wiring in experimentation, adjusting, observation and record are all very convenient.
Described LED characteristic test experimental device, diaphragm or color filter adopt detachable substitute mode, can test LED angular characteristics (such as the strong angle of LED half, LED deviation angle, LED light intensity space distribution etc.) while placing diaphragm; Can test spectral characteristic while placing color filter; In collocation, constant current source, high-voltage power supply, pwm circuit etc., can test LED volt-ampere characteristic (for example: LED forward volt-ampere characteristic, LED forward voltage drop, the reverse volt-ampere characteristic of LED, LED breakdown reverse voltage) and LED time resolution characteristics.
Described LED characteristic test experimental device, experimental section mainly comprises space distribution and half maximum intensity angle and deviation angle test, spectral characteristic and the time resolution characteristics test of the forward volt-ampere characteristic of LED and forward voltage drop test, oppositely volt-ampere characteristic and breakdown reverse voltage test, LED intensity.
Claims (3)
1. a LED characteristic test experimental device, comprise power unit, circuit part, instrument part and light path part, it is characterized in that: power unit, circuit part and light path part are integrated in a casing, on casing experiment table top, arrange power supply area (1), circuit region (2), gauge field (3) and light path district (4); Power supply area (1) comprise ± 5V direct supply interface (1-1), constant current source output interface (1-4) and constant current source adjusting knob (1-2) thereof, high-voltage power supply output interface (1-5) and high-voltage power supply adjusting knob (1-3) thereof; Circuit region (2) comprises connector (2-2), variohm unit (2-3) and resistor adjusting knob (2-4) thereof, pwm pulse output interface (2-5), PWM adjusting knob (2-6), the current adjusting knob (2-7) of circuit region power interface (2-1), resistance unit; Gauge field (3) comprises gauge field power interface (3-1), voltage table (3-2), voltage table input interface (3-3), voltage Gear-shift switch (3-4), reometer (3-5), reometer input interface (3-6) and electric current Gear-shift switch (3-7), illuminometer gauge outfit (3-8), brightness value input interface (3-9), illumination Gear-shift switch (3-10) and illuminometer zeroing knob (3-11); Light path district (4) comprises the input interface (4-6) of fixed muffle bearing (4-1), precision rotation platform base (4-2), light emitting diode; In casing, there are various power supplys, constant current source, pulse producer to connect with interface corresponding on casing experiment table top, it is upper that light source (4-5) is arranged on precision rotation platform base (4-2) by light source bracket (4-12), and optical detector component is arranged on fixed muffle bearing (4-1).
2. LED characteristic test experimental device according to claim 1, it is characterized in that: optical detector component comprises the Shi Guang entrance port, one end (4-8) of long sleeve (4-7), long sleeve (4-7), the other end is photodetection output interface (4-9), photodetection output interface has end cap (4-10), and light entrance port (4-8) located diaphragm or the detachable interface of color filter (4-11); It is upper that light source (4-5) is arranged on light source sleeve (4-4), has the input interface (4-6) of light emitting diode on light source bracket (4-12).
3. LED characteristic test experimental device according to claim 1 and 2, is characterized in that: circuit region and light path district are arranged on same panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320559091.3U CN203479981U (en) | 2013-09-09 | 2013-09-09 | LED characteristic test experiment apparatus |
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| CN201320559091.3U CN203479981U (en) | 2013-09-09 | 2013-09-09 | LED characteristic test experiment apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330244A (en) * | 2014-11-23 | 2015-02-04 | 保定维特瑞交通设施工程有限责任公司 | Photoelectric property parameter testing device of traffic control display unit |
| CN106468743A (en) * | 2015-08-18 | 2017-03-01 | 长春艾克思科技有限责任公司 | Pulse constant current diode forward pressure fall-off test instrument |
| CN106772924A (en) * | 2017-03-01 | 2017-05-31 | 华中光电技术研究所（中国船舶重工集团公司第七七研究所） | The debugging apparatus and adjustment method of a kind of continuous zooming optical camera motion component |
| CN108663549A (en) * | 2018-05-28 | 2018-10-16 | 深圳瑞波光电子有限公司 | A kind of positioning device and test system |
| CN110412379A (en) * | 2019-07-31 | 2019-11-05 | 惠州市德赛西威汽车电子股份有限公司 | A kind of test method of instrument function response time |
| RU234738U1 (en) * | 2024-12-12 | 2025-06-06 | федеральное государственное автономное образовательное учреждение высшего образования "Московский физико-технический институт (национальный исследовательский университет)" | Portable laboratory research stand for studying the parameters and characteristics of solar photovoltaic cells |
-
2013
- 2013-09-09 CN CN201320559091.3U patent/CN203479981U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330244A (en) * | 2014-11-23 | 2015-02-04 | 保定维特瑞交通设施工程有限责任公司 | Photoelectric property parameter testing device of traffic control display unit |
| CN106468743A (en) * | 2015-08-18 | 2017-03-01 | 长春艾克思科技有限责任公司 | Pulse constant current diode forward pressure fall-off test instrument |
| CN106772924A (en) * | 2017-03-01 | 2017-05-31 | 华中光电技术研究所（中国船舶重工集团公司第七七研究所） | The debugging apparatus and adjustment method of a kind of continuous zooming optical camera motion component |
| CN108663549A (en) * | 2018-05-28 | 2018-10-16 | 深圳瑞波光电子有限公司 | A kind of positioning device and test system |
| CN108663549B (en) * | 2018-05-28 | 2024-03-26 | 深圳瑞波光电子有限公司 | Positioning device and testing system |
| CN110412379A (en) * | 2019-07-31 | 2019-11-05 | 惠州市德赛西威汽车电子股份有限公司 | A kind of test method of instrument function response time |
| RU234738U1 (en) * | 2024-12-12 | 2025-06-06 | федеральное государственное автономное образовательное учреждение высшего образования "Московский физико-технический институт (национальный исследовательский университет)" | Portable laboratory research stand for studying the parameters and characteristics of solar photovoltaic cells |
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