CN208488533U - The device that LED light degree of aging is quickly detected - Google Patents
The device that LED light degree of aging is quickly detected Download PDFInfo
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- CN208488533U CN208488533U CN201821050722.8U CN201821050722U CN208488533U CN 208488533 U CN208488533 U CN 208488533U CN 201821050722 U CN201821050722 U CN 201821050722U CN 208488533 U CN208488533 U CN 208488533U
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Abstract
The utility model discloses the device that a kind of pair of LED light degree of aging quickly detects, photoelectricity magazine is electrically connected with reading plotter, and blanking voltage is read by reading plotter, a power socket is set beside photoelectricity magazine, the LED light of a degree of aging to be measured can be electrically connected on the power socket；LED light is as work light, and the light of LED light is incident in the entrance port of photoelectricity magazine.This case is improved using existing photoelectric effect instrument, specifically it is improved to traditional mercury lamp and colour filter being changed to LED light to be detected, and the characteristics of utilizing LED light to be single colored light, and using the LED light of wavelength to be measured as the work light of photoelectric effect instrument after improving, bring the parameters such as the spilling function of the high blanking voltage of measurement accuracy and photoelectricity magazine into photoelectric equation formula, can calculate LED light frequency v, frequency V when frequency V just dispatches from the factory divided by LED light obtains ratio Y, the degree of aging of ratio Y expression LED light, it is believed that LED light is scrapped when ratio Y is less than or equal to 37%.
Description
Technical field
The utility model belongs to LED light degree of aging detection field more particularly to a kind of pair of LED light degree of aging is quickly examined
The device of survey.
Background technique
LED light is a kind of new type light source, it is LED light, and energy consumption is lower, and operation strategies are than wide.LED light uses
A period of time after will aging, intensity of illumination can die down, while electric current and voltage can all decay, and the frequency of LED light also can
It shortens.Degree of aging is the important parameter of a LED light, it represents the service life of LED light.Existing LED light aging journey
Degree measurement method is to measure LED light current or voltage after a period of use, and by the electric current of LED light after a period of use
Or voltage, divided by the current or voltage for the LED light just dispatched from the factory, to obtain a percentage, the numerical value of the percentage is generally less than
Or think that LED light degree of aging is larger equal to 37% or so, it can scrap.
In the detection process, we are also exploring always new quick detection LED light degree of aging detection method.
Utility model content
The purpose of this utility model is to provide the completely new devices quickly detected to LED light degree of aging.
The technical solution of the utility model is as follows: the device that a kind of pair of LED light degree of aging quickly detects, feature exist
In: including photoelectricity magazine (1) and reading plotter (2), wherein photoelectricity magazine (1) is electrically connected with reading plotter (2), and is filled by reading
It sets (2) and reads blanking voltage, a power socket (20) is set beside the photoelectricity magazine (1), can be electrically connected on the power socket (20)
The LED light (3) of a degree of aging to be measured is connect, and power socket (20) powers to LED light (3)；The LED light (3) is used as work
Make light source, and the light of LED light (3) is incident in the entrance port of photoelectricity magazine (1).
This test device improves on the basis of existing photoelectric effect instrument, specific to improve are as follows: by existing photoelectricity
The mercury lamp and colour filter of effect instrument replace, and change LED light to be detected, and power socket (20) are arranged, to realize LED light
Fast assembling-disassembling, to realize the purpose quickly detected.Applicant has found when studying photoelectric effect instrument, due to tixed thinking
Etc. factors influence, those skilled in the art are using mercury lamp as the work light of photoelectric effect instrument, and never all the time
Mercury lamp was studied to adverse effect caused by photoelectric effect instrument measurement accuracy, also did not expected replacing as standard sources
Mercury lamp less will recognize that and replace mercury lamp as the work light of photoelectric effect instrument this kind of monochromatic source of such as LED light, therefore
From proposing, for this angle of finding the problem, this case is creative.Further, this case is by removing mercury lamp and phase
The expensive colour filter answered, and replace mercury lamp as the work light of photoelectric effect instrument this kind of monochromatic source of LED light, from root
Guarantee that the light frequency spectrum for being incident on photoelectricity magazine is single in sheet, from the measurement error for reducing blanking voltage to the full extent, into
And it farthest ensure that the measurement accuracy of photoelectric effect instrument.
According to photoelectric equation formula: eU=hv-W, wherein e is the carried charge of Single Electron, and U is blanking voltage, should
Blanking voltage is read by step c, and h is Planck's constant, and W is the spilling function of photoelectricity magazine；Bring the parameter into photoelectricity effect
Answer equation formulations, can calculate LED light frequency v.The LED light frequency v measured is obtained divided by the frequency v of LED light when rigid factory
To a ratio Y, ratio Y is less than 1, and this ratio Y indicates the degree of aging of LED, when this ratio Y is less than or equal to 37%
When, indicate that the LED light is scrapped.
In conclusion this case is a kind of completely new LED light degree of aging measuring device, which utilizes existing light
The transformation of electrical effect instrument, specific transformation is exactly that mercury lamp and colour filter are changed to LED light to be detected, so as to accurately
Detect the frequency of LED light, the frequency of the frequency and LED light when factory, which is divided by, can be obtained degree of aging ratio Y, this detection
The structure and working principle of device and existing voltage or current detection mode are entirely different.
Preferably, being installed with a diplopore diaphragm (4), the diplopore light at the light entrance port of the photoelectricity magazine (1)
Door screen is cylinder-like structure, is respectively equipped with one piece of cover board at two port, the relative position of this two cover plates is respectively equipped with one
Circular hole (4a), and the light entrance port of two circular holes and photoelectricity magazine (1) is on same straight line；What the LED light (3) issued
Light successively after beam expanding lens (5), collimation lens (6) and diplopore diaphragm (4), is incident in the reading plotter (2).
Using above technical scheme, the light that this structure can issue LED light (3) is expanded and is collimated, to guarantee
The measurement accuracy of photoelectric effect instrument, to guarantee the measurement accuracy of LED light frequency.
As optimization design, the photoelectricity magazine (1), LED light (3), beam expanding lens (5) and collimation lens (6) are arranged same
On one pedestal (7), one piece of vertical plate (8), the vertical plate are equipped with beside the LED light (3), beam expanding lens (5) and collimation lens (6)
(8) it is equipped with one piece of turnover hood (9)；The hood (9) is semi-circular cylindrical structure, far from photoelectricity magazine (1)
The port of one end is installed with barn door (10), and the hood (9) is open close to the port of photoelectricity magazine (1) one end；When the screening
When light shield (9) is turned down, LED light (3), beam expanding lens (5) and collimation lens (6) can be covered, to avoid ambient to LED light
(3) light issued interferes.
It is expanded by beam expanding lens, diplopore diaphragm is incident on directional light after collimation lens collimation, light beam passes sequentially through diplopore
Enter photoelectricity magazine behind two holes of diaphragm.Since system is easy to be rung by environment shadow, the design of diplopore diaphragm may filter that major part
Environment light；Baffle design is at bascule, and when adjusting optical path, reverse flip hood, after optical path adjusting is good, forward direction is turned over
Turn hood environment light is isolated.The light that this structure can effectively avoid ambient from issuing LED light (3) causes to do
Disturb, to be further ensured that the light of incident photoelectricity magazine (1) is single light, and then guarantee that blanking voltage measurement is accurate, more into
The measurement accuracy of one step guarantee LED light frequency.
The utility model has the advantages that this case is improved using existing photoelectric effect instrument, specifically it is improved to traditional mercury lamp and filter
Color chips is changed to LED light to be detected, and the characteristics of be single colored light using LED light, and using the LED light of wavelength to be measured as
The work light of photoelectric effect instrument after improvement thus fundamentally guarantees that the light being incident in photoelectricity magazine is single light
Line, so that the measurement error of blanking voltage is utmostly avoided, by the spilling of the high blanking voltage of measurement accuracy and photoelectricity magazine
The parameters such as function bring photoelectric equation formula into, can calculate LED light frequency v, when frequency V just dispatches from the factory divided by LED light
Frequency V obtains ratio Y, and ratio Y indicates the degree of aging of LED light, is believed that LED light when ratio Y is less than or equal to 37%
It scraps.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of diplopore diaphragm 4 in Fig. 1.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
As shown in Figure 1, 2, the device that a kind of pair of LED light degree of aging quickly detects includes including photoelectricity magazine 1 and reading
Device 2, wherein photoelectricity magazine 1 is electrically connected with reading plotter 2, and reads blanking voltage, and reading plotter 2 by reading plotter 2
Structure and working principle is the prior art, and how photoelectricity magazine 1 connect also as the prior art with reading plotter 2, do not do herein superfluous
It states.The LED light 3 of one wavelength to be tested of setting beside photoelectricity magazine 1, the work light of the LED light 3 as photoelectric effect instrument,
And the light that LED light 3 issues is incident in photoelectricity magazine 1.
A diplopore diaphragm 4 is installed at the light entrance port of photoelectricity magazine 1, which is cylinder-like structure,
One piece of cover board 4b is respectively equipped at two ports, the relative position of this two cover plates is respectively equipped with a circular hole 4a, and two circles
Hole and the light entrance port of photoelectricity magazine 1 are on same straight line；The light that LED light 3 issues successively passes through beam expanding lens 5, collimation
After lens 6 and diplopore diaphragm 4, it is incident in reading plotter 2.
As shown in Figure 1, 2, photoelectricity magazine 1, LED light 3, beam expanding lens 5 and collimation lens 6 are arranged on the same pedestal 7,
One piece of vertical plate 8 is equipped with beside LED light 3, beam expanding lens 5 and collimation lens 6, which is equipped with one piece of turnover hood 9；
Hood 9 is semi-circular cylindrical structure, and the port far from 1 one end of photoelectricity magazine is installed with barn door 10, which leans on dipped beam
The port of electric 1 one end of magazine is open.When hood 9 is turned down, LED light 3, beam expanding lens 5 and collimation lens 6 can be covered, to keep away
Exempt from the light that ambient issues LED light 3 to interfere.When hood 9 rolls up, expose LED light 3, beam expanding lens 5 and collimation
Lens 6, are conveniently replaceable the LED light 3 of different spectral, to measure the LED light 3 of different wave length.
Adjust height and the position of LED light 3, the incidence for the photoelectricity magazine 1 that the light for issuing LED light 3 is directly incident on
Mouthful.Read the blanking voltage on reading plotter 2.The measurement method of blanking voltage uses improved compensation point mensuration, the improvement
Compensation point mensuration operation it is as follows:
Backward voltage is adjusted, the working laser of photoelectricity magazine is incident on by repeatedly switching, and observes total current change
Change, measurement is when there is light to irradiate and irradiate without light, voltage, that is, improved compensation point voltage of total current identical points.In disconnected light
When, the total current that photoelectricity magazine obtains is made of dark current and background current.In light passing, total current that photoelectricity magazine obtains by
Cathode photo current, anode photoelectric current, dark current and background current collectively constitute.In improved compensation point cathode photo current and anode
Photoelectric current is equal in magnitude, and symbol is on the contrary, sum is zero.Improved compensation point mensuration, utilizes cathode photo current and anode
The sum of photoelectric current is the voltage of zero point as blanking voltage.
According to photoelectric equation formula eU=hv-W, wherein e is the carried charge of Single Electron, and U is blanking voltage, this section
Only voltage is read by step c, and h is Planck's constant, and W is the spilling function of photoelectricity magazine.Bring parameter into photoelectric equation
Formula, can calculate LED light frequency v, and frequency v is inversely proportional with wavelength X, so as to obtain the wavelength X of LED light.It can be first
It is demarcated by the LED light of a known wavelength come the spilling function to photoelectricity magazine, concrete operations are as follows: allow known wavelength
LED light light is incident on photoelectricity magazine, according to photoelectric equation formula eU=hv-W, all brings known e, U, h and v into light
Electrical effect equation formulations, to demarcate the spilling function W of photoelectricity magazine.Since the material overflow-resisting function amount of photoelectricity magazine may be with
The time and decay, therefore the actual overflow function of photoelectricity magazine may be inconsistent with the spilling function that marks when factory, so this technology
Scheme demarcates the spilling function to photoelectricity magazine by the LED light of known wavelength, so that it is actual to measure photoelectricity magazine
Function is overflowed, then the actual overflow function measured is brought into photoelectric equation, to further increase LED light wavelength to be measured
Measurement accuracy.
The above is only the preferred embodiment of the utility model only, is not limitation with the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (3)
1. the device that a kind of pair of LED light degree of aging quickly detects, it is characterised in that: including photoelectricity magazine (1) and reading plotter
(2), wherein photoelectricity magazine (1) is electrically connected with reading plotter (2), and reads blanking voltage by reading plotter (2), and the photoelectricity is dark
One power socket (20) is set beside box (1), the LED light of a degree of aging to be measured can be electrically connected on the power socket (20)
(3), and power socket (20) powers to LED light (3)；The LED light (3) is used as work light, and the light of LED light (3) is incident
Into the entrance port of photoelectricity magazine (1).
2. the device according to claim 1 quickly detected to LED light degree of aging, it is characterised in that: the photoelectricity is dark
It is installed with a diplopore diaphragm (4) at the light entrance port of box (1), which is cylinder-like structure, at two port
It is respectively equipped with one piece of cover board, the relative position of this two cover plates is respectively equipped with a circular hole (4a), and two circular holes and photoelectricity are dark
The light entrance port of box (1) is on same straight line；The light that the LED light (3) issues successively passes through beam expanding lens (5), collimation
After lens (6) and diplopore diaphragm (4), it is incident in the reading plotter (2).
3. the device according to claim 1 quickly detected to LED light degree of aging, it is characterised in that: the photoelectricity is dark
Box (1), LED light (3), beam expanding lens (5) and collimation lens (6) are arranged on the same pedestal (7), and the LED light (3) expands
One piece of vertical plate (8) is equipped with beside mirror (5) and collimation lens (6), which is equipped with one piece of turnover hood (9)；Institute
Stating hood (9) is semi-circular cylindrical structure, and the port far from photoelectricity magazine (1) one end is installed with barn door (10), the shading
The port for covering (9) close to photoelectricity magazine (1) one end is open；When the hood (9) is turned down, LED light (3) can be covered, expanded
Mirror (5) and collimation lens (6), so that the light for avoiding ambient from issuing LED light (3) interferes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821050722.8U CN208488533U (en) | 2018-07-03 | 2018-07-03 | The device that LED light degree of aging is quickly detected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821050722.8U CN208488533U (en) | 2018-07-03 | 2018-07-03 | The device that LED light degree of aging is quickly detected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208488533U true CN208488533U (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821050722.8U Active CN208488533U (en) | 2018-07-03 | 2018-07-03 | The device that LED light degree of aging is quickly detected |
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| CN (1) | CN208488533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594141A (en) * | 2018-07-03 | 2018-09-28 | 重庆知遨科技有限公司 | The device and method that LED light degree of aging is quickly detected |
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2018
- 2018-07-03 CN CN201821050722.8U patent/CN208488533U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594141A (en) * | 2018-07-03 | 2018-09-28 | 重庆知遨科技有限公司 | The device and method that LED light degree of aging is quickly detected |
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