CN201355305Y - Equipment for detecting total luminous flux of light source of light receiving device with solar battery - Google Patents
Equipment for detecting total luminous flux of light source of light receiving device with solar battery Download PDFInfo
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- CN201355305Y CN201355305Y CN 200820114336 CN200820114336U CN201355305Y CN 201355305 Y CN201355305 Y CN 201355305Y CN 200820114336 CN200820114336 CN 200820114336 CN 200820114336 U CN200820114336 U CN 200820114336U CN 201355305 Y CN201355305 Y CN 201355305Y
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- solar cell
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Abstract
The equipment of a light receiving device with a solar battery is used for detecting the total luminous flux of a group of light sources to be measured. The light source to be measured is provided with a solid luminous angle, wherein the solar battery has an illuminated surface; the detecting equipment comprises a laying seat, a a group of light receiving devices and a group of treating devices, wherein, the laying seat is used for laying and supplying power for a light source to be measured to enable the light source to illuminate; the light receiving devices comprise at least a solar battery with the illuminated surface facing towards the laying seat and arranged to cover the solid luminous angle of the light source to be measured to the predetermined proportion, so as to be used for converting the light energy by the light source to be measured to at least one solar battery into the electric energy; and the treating devices are used for receiving the electric energy converted by the light receiving devices.
Description
Technical field
The utility model is the full luminous flux detection equipment of a kind of light source, particularly a kind of solar cell optical pickup apparatus and have the full luminous flux detection equipment of this device.
Background technology
The full luminous flux of light source (Total Luminous Flux, unit a: important parameter when lumen) being application, especially at for example light emitting diode (LED) with blue light or purple LED during as the application of white LED light source, the significant in value that must consider especially.Standard according to CIE, the measurement of its full luminous flux size, must be as shown in Figure 1, LED 2 to be measured is placed certain in the enough big integrating sphere (OpticalIntegrating Sphere) 1, make and to place the light source to be measured of its inside such as light that LED 2 is sent to be evenly distributed in integrating sphere 1 inside, allow luminous optical fiber 4 via integrating sphere 1 efferent B place export in the spectral energy analyser (Spectrometer) 5, thereby obtain the spectral energy response ILED (λ) that LED 2 treats photometry.
After removing light source to be measured, utilize the standard sources 6 of a known brightness for E (λ) in addition, by a light hurdle 7, its openings of sizes is A0 with the luminous bundle of institute.Luminous bundle inject integrating sphere 1 via the input part A of integrating sphere 1, equally through efferent B and optical fiber 4 with integrating sphere 1 in the luminous energy of institute's homogenising be sent in the spectral energy analyser 5, thereby to respond be Iext (λ) to the spectral energy that obtains standard sources.Through the corrected standard sources contrast of this kind, just can obtain the full luminous flux of light source to be measured
For
K is the correction coefficient of considering integrating sphere 1 unevenness, reaching inner shield 3 caused asymmetry in the formula (1).
This kind measurement structure is put the progradation bulb separation with light source to be measured howsoever, and measurement finishes at every turn, how will survey the light source of finishing and take out, and all can cause the threshold restriction of measuring speed; In addition, in the integrating sphere 1, also need additionally to be provided with shield 3, make the structure relative complex again; And the size of integrating sphere 1 is restricted, also makes the whole detection equipment volume to reduce, and causes general only the measurement in the laboratory of the method to use, and is not suitable for general production line.
Be simplified structure, lifting testing efficiency, the known full luminous flux testing apparatus that really is used for production line, detection luminescence component to be measured as shown in Figure 2, can select light source to be measured, for example LED 2 ' places outside the integrating sphere 1 ', and form a smooth input part A ' in addition, so be called as two opening integrating spheres 1 '.The size of this input part A ' must enough be sent LED 2 ' to be measured towards all directions luminous energy is all included in the integrating sphere 1 '.In addition, for preventing to be directly incident on efferent B ' by the light that input part A ' enters, be provided with inner shield 3 ' between input part A ' and efferent B ', the light that is overflowed by efferent B ' is then equally via in optical fiber 4 ' the lead-in light spectrum energy analyser 5 '.
Wherein, shown in the enlarged diagram of Fig. 3, the angle of including in that input part A ' effectively includes the light of LED 2 ' to be measured in integrating sphere 1 ' is: θ=tan-1 (r/h), and wherein h is the distance of LED 2 ' and integrating sphere 1 ', r is the radius of input part A '.The light field of supposing LED is cos θ and distributes, and then when including angle θ=78.69 ° in, the gross energy of including integrating sphere in accounts for (the 1-cos of total luminous energy
2θ)=96.1%, that is to say that 3.9% energy is not included into.Calculate according to following formula, this moment r/h=5, that is when h=2cm, r is at least 10cm, makes the diameter of integrating sphere 1 ' be necessary for more than the 60cm at least; Preferably diameter can have about one meter, could allow LED 2 ' luminous even distribution to be measured.
As mentioned above, if LED 2 ' issued light to be measured, major part is injected integrating sphere 1 ' via input part A ', and evenly distribute, then utilize calibrated good integrating sphere reflecting spectrum response R (λ), the spectral energy of weighted calculation LED responds ILED (λ), can obtain the full luminous flux of LED 2 '
K is a correction coefficient in the formula (2), comprising modifying factors such as the unevenness of passing through ratio (throughput), integrating sphere of integrating sphere 1 ' and integrating sphere 1 ' the opening amount of not including in ratios.
Yet, utilize the method to measure, will face following two thorny problems:
1. the amount of not including in of integrating sphere 1 ' opening does not distribute if the light field of light source to be measured is cos θ, and then its corrected value will have bigger error amount; Especially when light source to be measured be that for example lighting angle such as incandescent lamp or fluorescent lamp is towards person from all directions, error can't be ignored especially.
2. by the luminous flux of input part A ' input, will export by efferent B ' and input part A ' respectively, and consider both area ratios.Definition A ", B " be respectively the input and the sectional area of efferent, because of input part A ' sectional area A " much larger than efferent B ' sectional area B ", the reflection coefficient of supposing integrating sphere 1 ' is 100%, then the luminous flux of light source led 2 ' to be measured
In A "/(A "+B ") ratio portion, will locate to reflect back into LED 2 ' determinand assembly on one side by input part A ', its volume reflection of guestimate almost reaches more than 90%.And this reflects back into the luminous flux of assembly, part will reflect back in the integrating sphere 1 ' again, the difference to some extent but surface appearance that need look LED 2 ' assembly to be measured is different, even only supposing amount of variability is 10%, all will cause 9% variation, cause the great difficult point of measuring accuracy the measurement of LED luminous flux.
In other words, the full luminous flux of correct measurement luminescence component to be measured, consider again production line rapidly with the discrepancy facility of luminescence component to be measured, and use existing optical sensor, be subject to its size again and make up difficult, and price thereby significantly improve; Therefore, cause the awkward predicament of manufacturing luminescence component and using luminescence component manufacturer undoubtedly.
The utility model content
Therefore, a purpose of the present utility model, be to provide a kind of simple in structure, limited full luminous flux detection equipment takes up room.
Another purpose of the present utility model is to provide a kind of measuring error of correctly compensation spectrum response, makes the full luminous flux detection equipment that error amount reduces that detects.
Another purpose of the present utility model is to provide a kind of cheap for manufacturing cost, full luminous flux detection equipment of reducing the luminescence component testing cost.
Another purpose of the present utility model is to provide a kind of and can provides the full luminous flux detection equipment of different structure according to the demand of different determinands.
Another purpose again of the present utility model is to provide a kind of for light-emitting 3 D angle coverage rate height, and the optical pickup apparatus with solar cell used of the light source to be measured full luminous flux detection equipment that is easy to pass in and out.
So, a kind of full luminous flux detection equipment of the present utility model with solar cell optical pickup apparatus, for measuring one group of full luminous flux of light source to be measured, this light source to be measured has a light-emitting 3 D angle, wherein this solar cell has a sensitive surface, it is characterized in that this checkout equipment comprises:
One for putting light source to be measured and to this light source energy supply to be measured, making its luminous holder;
One group of optical pickup apparatus, comprise a slice sensitive surface at least towards this holder and the light-emitting 3 D angle that is configured to cover this light source to be measured reach the solar cell of a predetermined ratio, for light source irradiation to be measured to this at least the transform light energy of a slice solar cell be electric energy; And
The treating apparatus of the electric energy that one group of received is changed from this optical pickup apparatus.
This full luminous flux detection equipment comprises one for storing and to this light source energy supply to be measured, make its luminous holder and one group for the treatment of apparatus, this light source to be measured has a light-emitting 3 D angle, and this solar cell has a sensitive surface, optical pickup apparatus and then comprise:
At least the electric battery that becomes of a slice solar battery group, the sensitive surface of this solar cell towards this holder and the light-emitting 3 D angle of being arranged to cover this light source to be measured reach a predetermined ratio, for will expose to this at least the transform light energy of a slice solar cell be electric energy and export this treating apparatus to.
Propose in the utility model to utilize solar cell (solar cell photovoltaic), utilize simple in structure, the price of solar cell to suit on the one hand, allow the equipment that produces have the market competitiveness as optical pickup apparatus; On the other hand with its low reflection, the high characteristic that absorbs, measure full luminous flux effectively and avoid reflection problems, improve and measure sensitivity; Especially added the compensation of spectral energy response, allowed measuring accuracy promote.In addition, solar cell has monocrystalline silicon (single crystal) type, polysilicon (poly crystal) type, film-type (thin-film amorphous silicon), compound semiconductor solar cell and organic/inorganic solar cell at present, not only can be as smooth receiving device of the present utility model, more can be and design different structure according to characteristic separately, so that the adaptability of detection to be provided.
Because contribution of the present utility model, significantly improved the defective of known detection mode, on production line, set up takes up room limited, price suitable, the good full luminous flux detection equipment of light source to be measured of accuracy of detection.
Description of drawings
Fig. 1 is the vertical view of the full luminous flux testing apparatus of known detection LED assembly to be measured;
Fig. 2 is the side view of the full luminous flux testing apparatus of another known detection LED assembly to be measured;
Fig. 3 is the local enlarged diagram of Fig. 2;
The schematic perspective view that Fig. 4 uses for the full luminous flux detection equipment of the utility model with solar cell optical pickup apparatus and first preferred embodiment of this equipment;
The side-looking diagrammatic cross-section that Fig. 5 uses for the full luminous flux detection equipment of the utility model with solar cell optical pickup apparatus and first preferred embodiment of this equipment;
The rear view that Fig. 6 uses for the full luminous flux detection equipment of the utility model with solar cell optical pickup apparatus and first preferred embodiment of this equipment;
The side-looking diagrammatic cross-section that Fig. 7 uses for the full luminous flux detection equipment of the utility model with solar cell optical pickup apparatus and second preferred embodiment of this equipment;
Fig. 8～10 the operating state synoptic diagram of using for the full luminous flux detection equipment of the utility model with solar cell optical pickup apparatus and the 3rd preferred embodiment of this equipment
The primary clustering symbol description
1,1 ' ... integrating sphere
10,10 ', 10 " ... optical pickup apparatus
102,104,106,108,110,112... solar cell
2,2 ', 30... LED to be measured
20,20 ', 20 " ... conveying device
202,202 ', 202 " ... holder
3,3 ' ... shield 32... optical wand to be measured
4,4 ', 40,40 " ... optical fiber
5,5 ', 50,50 " ... the spectral energy analyser
6... standard sources 7... light hurdle
11... housing 12... thin film solar cell
60,60 ', 60 " ... processor
70,70 ', 70 " ... transmitting device
80... vacancy district 90... conveyer
A, A ' ... input part
B, B ', C... efferent
A " ... the input part sectional area
B " ... the efferent sectional area
Distance between h...LED and the integrating sphere
R... the radius of input part
θ ... include the angle in
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present utility model, in the detailed description of the preferred embodiment of following conjunction with figs., can clearly present.For convenience of description, the light source to be measured in checkout equipment of the present utility model and the optical pickup apparatus all is example with LED, and certainly, the structure that other luminescence component such as bulb, fluorescent tube also can adopt the utility model to disclose is detected.
Be subject to present solar cell manufacturing process, how much to some extent each sheet silicon performance difference, and its photoelectric transformation efficiency and spectral response separately is different thereupon.Therefore, each sheet solar cell all must independently be calibrated, through the test of spectral energy analyser, to obtain indivedual spectral response coefficients R of every solar cell
N, m(λ) (unit is Amp/Watt, and promptly every watt of light is injected available photoelectricity flow).Wherein n represents m photoelectric cell on n the face.Because in this structure, the energy of each solar cell gained will be by indivedual compensation calibrations, and the spatial uniformity of each solar cell (Space-uniformity) is also through screening, so that the correct measurement result to be provided.
Fig. 4 uses for the full luminous flux detection equipment of the utility model has solar cell optical pickup apparatus and this equipment first a preferred embodiment schematic perspective view, optical pickup apparatus be for example by six lay respectively at, right, left, forward and backward, under 102,104,106,108,110,112 one common peripheral of solar cell around forming an accommodation space.In the present embodiment, be with optical wand (light bar) with plurality of LEDs crystal grain as determinand, and transport by conveying device, make when optical wand to be measured is transported to the central point of this accommodation space, luminous by energy supply.
Certainly, if light source to be measured is bigger, when for example being a light fixture, the size of single solar cell possibly can't contain single side, and each face needs all more that the multi-disc solar cell just is enough to be combined into above-mentioned optical pickup apparatus.
The short-circuit photocurrent (short-circuitphotocurrent) of each solar cell 102,104,106,108,110,112 exports processor 60 to via transmitting device 70 independently of one another and measures and contrast computing.On the other hand, the receiving plane of an optical fiber 40 is fixedly connected on efferent C towards accommodation space, and the other end then is connected to spectral energy analyser 50.
Utilization places the optical fiber 40 at efferent C place the luminous flux lead-in light spectrum energy analyser 50 of minimum part, obtains the spectral power distribution S of LED 30 to be measured
LED(λ), the short-circuit photocurrent of each solar cell then
In，m＝∫λS
LED(λ)R
n，m(λ)dλ.....................(3)
So corresponding n, m the LED portions of light flux that the solar cell amount arrives
Spectral power distribution via spectral energy analyser 50 resulting LED 30 to be measured, by the conveyer 90 between spectral energy analyser 50 and the processor 60 spectral power distribution is imported processor 60, and be integrated into the full luminous flux of LED to be measured with the LED portions of light flux that each solar cell records
Learn by the above-mentioned derivation of equation, must proofread and correct the spectral response coefficients R that obtains each solar cell earlier
N, m(λ), deposit in the processor 60, and according to the spectrum S by LED in the optical wand to be measured 32 that obtains in real time in the spectral energy analyser 50
LED(λ), in the input processor 60, the pairing luminous flux of photoelectric cell is compensated ranking operation, last addition can obtain whole luminous fluxes of optical wand 32 to be measured, and unit be watt (watt).
Must utilize the standard of CIE defined to look function V (λ) to convert if be scaled visible power unit's lumen (lumen), it is
Therefore whole luminous fluxes of LED are
Fig. 5 and Fig. 6 are section and the rear view of Fig. 4 embodiment, because optical pickup apparatus 10 is formed with a vacancy district 80 in corresponding conveying device operation part, just can hold the conveying device operation.As mentioned above, when optical wand 32 to be measured is arranged in this optical pickup apparatus 10, send by the holder on the conveying device 20 202 and can give this optical wand 32 to be measured, make it luminous to test.
Fig. 7 is the side view of the utility model second preferred embodiment, when light source to be measured for example LED on manufacturing process when more stable, each luminescence component institute luminous spectrum degree of stability promotes, for requiring more undemanding product, just can omit the spectral energy analyser in the previous embodiment and perform calculations and get final product with the fixing spectrum of predetermined reference assembly.More reduce the cost of checkout equipment on the one hand, make its structure simpler simultaneously, take up room still less.
In the present embodiment, above-mentioned optical pickup apparatus 10 ' is a single plate type solar battery, and optical pickup apparatus 10 ' and holder 202 ' distance are to make when this LED to be measured 30 is luminous, expose to the luminous energy of optical pickup apparatus 10 ' much larger than exposing to this optical pickup apparatus 10 ' sensitive surface luminous energy in addition, this optical pickup apparatus 10 ' is because be a flat state, thus only fixedly same position need not to change direction.When conveying device 20 ' will carry a plurality of LED to be measured 30 by holder 202 ' energy supply when moving to optical pickup apparatus 10 ' below and carrying out luminous flux detection, become electric energy via optical pickup apparatus 10 ' with transform light energy this moment, transmits the processor 60 ' of electric energy to the other end by the transmitting device 70 ' that is installed in optical pickup apparatus 10 ' one end.
Fig. 8 to 10 is the operating state synoptic diagram of full luminous flux detection equipment the 3rd preferred embodiment of the utility model.For convenience of description, present embodiment is with three groups of optical pickup apparatus 10 " be example.Comprise respectively: one has the housing 11 of arch section " and be mounted on housing 11 " inner thin film solar cell 12 ", utilize thin film solar cell 12 " plasticity, constitute an optical pickup apparatus shape that meets particular demands.
When conveying device 20 " will carry the holder 202 of LED 30 to be measured " move to optical pickup apparatus 10 " during the precalculated position, below, can shroud light source to be measured and holder 202 " optical pickup apparatus 10 " understand to holder 202 " move to a level altitude and cover the light-emitting 3 D angle of LED 30 to be measured.This moment holder 202 " will make it luminous to LED 30 energy supplies to be measured.Optical pickup apparatus 10 simultaneously " this luminous energy received and utilizes be attached to housing 11 " inner thin film solar photoelectric cell 12 " be electric energy with transform light energy, by transmitting device 70 " conduct to processor 60 ".
Shown in first embodiment, be installed in optical pickup apparatus 10 " optical fiber 40 of end " the luminous energy with the part conduct to spectral energy analyser 50 "; through spectral energy analyser 50 " analyze after, the information that obtains is sent to processor 60 by Wireless transmission mode "; and with the contrast of the electric energy that received just now, produce the full luminous flux of required detection.
As shown in figure 10, after finishing all detections, optical pickup apparatus 10 " can follow former approach and get back to and conveying device 20 " keep the reference position of a preset distance, when optical pickup apparatus 10 " leave after; conveying device 20 " then move toward former predetermined direction, next group LED 30 to be measured is delivered to the position that needs detection, go round and begin again.
By the size and the price of solar cell, the optical pickup apparatus that can make the application is no matter in manufacturing cost, still aspect framework production line convenient, all significantly be better than the common integral ball; In addition, solar cell initiatively receives luminous energy, and almost all absorbs this luminous energy, reach certain proportion as long as can shroud the light-emitting 3 D angle of light source to be measured, can correctly estimate the full luminous flux of light source to be measured, the factors such as reflection coefficient variation of the determinand of need not worrying, the precision of raising testing result; In addition structural design has suitable variability, more can change shaped design according to client's demand, thereby increases the elasticity of customization.
The above only is preferred embodiment of the present utility model; can not constitute restriction with this to the utility model protection domain; any equivalent variations and modification of doing according to claimed scope of the utility model application right and description still belongs to the scope that the utility model patent contains.
Claims (9)
1. full luminous flux detection equipment of light source with optical pickup apparatus of solar cell, for measuring one group of full luminous flux of light source to be measured, this light source to be measured has a light-emitting 3 D angle, and wherein this solar cell has a sensitive surface, it is characterized in that this checkout equipment comprises:
One for putting light source to be measured and to this light source energy supply to be measured, making its luminous holder;
One group of optical pickup apparatus, comprise a slice sensitive surface at least towards this holder and the light-emitting 3 D angle that is configured to cover this light source to be measured reach the solar cell of a predetermined ratio, for light source irradiation to be measured to this at least the transform light energy of a slice solar cell be electric energy; And
The treating apparatus of the electric energy that one group of received is changed from this optical pickup apparatus.
2. full luminous flux detection equipment according to claim 1 is characterized in that, this optical pickup apparatus comprises that the multi-disc sensitive surface lays out the solar cell of a test space towards this holder, one common peripheral.
3. full luminous flux detection equipment according to claim 1 is characterized in that this optical pickup apparatus comprises a housing, and is arranged at one group of solar cell of this housing.
4. full luminous flux detection equipment according to claim 3 is characterized in that this housing has a cambered surface.
5. full luminous flux detection equipment according to claim 1 is characterized in that this group solar cell is a slice thin film solar cell.
6. full luminous flux detection equipment according to claim 1, it is characterized in that, more comprise a spectral energy analyser, and this optical pickup apparatus comprises that also this light source to be measured of transmission sends out part luminous energy to this spectral energy analyser, and an end face is to the optical fiber of this holder.
7. full luminous flux detection equipment according to claim 1 is characterized in that, comprises that more one is this housing of electric battery setting of a slice solar cell at least.
8. full luminous flux detection equipment according to claim 7 is characterized in that this housing has a cambered surface.
9. full luminous flux detection equipment according to claim 7 is characterized in that this optical pickup apparatus has an optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200820114336 CN201355305Y (en) | 2008-05-09 | 2008-05-09 | Equipment for detecting total luminous flux of light source of light receiving device with solar battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820114336 CN201355305Y (en) | 2008-05-09 | 2008-05-09 | Equipment for detecting total luminous flux of light source of light receiving device with solar battery |
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| CN201355305Y true CN201355305Y (en) | 2009-12-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175312A (en) * | 2010-12-31 | 2011-09-07 | 四川虹欧显示器件有限公司 | Method for measuring luminous flux |
| CN101726404B (en) * | 2008-10-15 | 2012-10-10 | 中茂电子(深圳)有限公司 | Detection platform for luminous component with a plurality of luminous elements and detection method thereof |
| CN101504328B (en) * | 2008-02-05 | 2013-08-28 | 中茂电子(深圳)有限公司 | Solar cell optical receiver and full luminous flux detection system with the same |
| CN103453987A (en) * | 2012-06-05 | 2013-12-18 | 致茂电子(苏州)有限公司 | Total luminous flux detection system and total luminous flux detection method |
| CN104568387A (en) * | 2014-12-30 | 2015-04-29 | 江苏大秦光电科技有限公司 | Method for testing light flux of LED surface light-emitting lamp |
-
2008
- 2008-05-09 CN CN 200820114336 patent/CN201355305Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504328B (en) * | 2008-02-05 | 2013-08-28 | 中茂电子(深圳)有限公司 | Solar cell optical receiver and full luminous flux detection system with the same |
| CN101726404B (en) * | 2008-10-15 | 2012-10-10 | 中茂电子(深圳)有限公司 | Detection platform for luminous component with a plurality of luminous elements and detection method thereof |
| CN102175312A (en) * | 2010-12-31 | 2011-09-07 | 四川虹欧显示器件有限公司 | Method for measuring luminous flux |
| CN103453987A (en) * | 2012-06-05 | 2013-12-18 | 致茂电子(苏州)有限公司 | Total luminous flux detection system and total luminous flux detection method |
| CN103453987B (en) * | 2012-06-05 | 2015-07-01 | 致茂电子(苏州)有限公司 | Total luminous flux detection system and total luminous flux detection method |
| CN104568387A (en) * | 2014-12-30 | 2015-04-29 | 江苏大秦光电科技有限公司 | Method for testing light flux of LED surface light-emitting lamp |
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