CN106525778A - Apparatus and method for measuring performance of fluorescent glue - Google Patents
Apparatus and method for measuring performance of fluorescent glue Download PDFInfo
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- CN106525778A CN106525778A CN201510583040.8A CN201510583040A CN106525778A CN 106525778 A CN106525778 A CN 106525778A CN 201510583040 A CN201510583040 A CN 201510583040A CN 106525778 A CN106525778 A CN 106525778A
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Abstract
The invention discloses an apparatus and method for measuring the performance of fluorescent glue. The apparatus comprises a temperature control device, which is provided with fluorescent glue and is used to adjust the temperature of the fluorescent glue; an integrating sphere, which is connected to the temperature control device and is used to collect the light generated by the fluorescent glue through excitation; and a spectral radiometer, which is connected to the integrating sphere and is used to measure the light collected by the integrating sphere. The provided apparatus and method are used to solve the problem that a conventional method cannot find the rules of excitation spectrum performance of fluorescent glue along with the temperatures.
Description
Technical field
The present invention relates to fluorescent glue field, in particular to a kind of device for measuring properties of fluorescent glue and method.
Background technology
As a kind of conventional LED/light source, white light LEDs typically send by blue light (or black light) with by blue light (or
Black light) the secondary color white light that mixes of excited fluophor lighted (based on gold-tinted).The device typically by
LED blue chips, fluorescent material, encapsulant, optical material and encapsulating material etc. are constituted.Therefore, from encapsulation
Angle, the position that white light LEDs failure may occur is mainly in encapsulants such as excitation source, fluorophor, silica gel, interior
The opticses and encapsulating material etc. such as interconnecting material, lens and reflector layer.Most of optical performance parameters of LED
(e.g., luminous flux, chromaticity coordinates, colour temperature etc.) is determined by spectral power distribution.
Fluorescent glue is typically the composite that one kind is made up of fluorescent material and high molecular polymer glue (e.g., silica gel etc.),
It plays the key effect of luminous intensity distribution and color matching in white-light LED encapsulation.According to the difference of LED packaging technologies, fluorescent glue
Can be generally divided into and excitation source directly contact or do not contact (long-distance fluorescent powder) two kinds of forms.When white light LEDs point
After bright, the heat that excitation source is produced all can be transferred on fluorescent glue in a variety of ways so as to be chronically at hot conditions
Under.Generally high temperature can accelerate the aging of fluorescent glue, be embodied in the reduction of fluorescent material English light conversion efficiency, polyphosphazene polymer
Compound glue yellow etc..Therefore, the rule that the excitation spectrum performance of research white light LEDs fluorescent glue is varied with temperature is must
Want, can be used for analyzing its thermal failure mechanism.
The method of existing fluorescent glue performance test is when the performance of fluorescent glue is tested, it is impossible to add temperature conditionss to measure,
Lead to not measure the rule that the excitation spectrum performance of fluorescent glue is varied with temperature.
For above-mentioned problem, effective solution is not yet proposed at present.
The content of the invention
A kind of device for measuring properties of fluorescent glue and method is embodiments provided, at least to solve in prior art
The technical problem of the rule that the excitation spectrum performance of fluorescent glue is varied with temperature cannot be measured.
A kind of one side according to embodiments of the present invention, there is provided device for measuring properties of fluorescent glue, including：Temperature control
Device, is provided with fluorescent glue, for adjusting the temperature of the fluorescent glue；Integrating sphere, is connected with the temperature regulating device,
It is stimulated the light of generation for collecting the fluorescent glue；Spectral radiometer, is connected with the integrating sphere, for measuring
The light that the integrating sphere is collected.
Further, the temperature regulating device includes：Temperature regulating device body；Heat-conducting plate with holes, is fixed on the temperature control
On device body；Excitation source, is arranged in the hole of the heat-conducting plate, for exciting the fluorescent glue to light, described
Fluorescent glue is covered on the hole, to prevent the light of the excitation source from projecting from the hole；Heater, is arranged
On the surface of the heat-conducting plate, it is connected with external power supply, for heating to the heat-conducting plate.
Further, the temperature regulating device body includes boss and pedestal, and the temperature regulating device also includes：Cooling board,
Be arranged on the boss, the heat-conducting plate be fixed on it is described cooling board on, the substrate of the excitation source with it is described
Cooling board contact.
Further, the temperature regulating device also includes：Fixture, for being fixed on the cooling board by the heat-conducting plate
On.
Further, the integrating sphere is provided with light well, and the boss loads the integrating sphere by the light well
In.
Further, the heater is at least one heating ceramic piece being arranged on the heat-conducting plate.
Further, the external power supply is crossing current voltage-stabilized power supply.
Further, the device for measuring properties of the fluorescent glue also includes thermocouple temperature measurement instrument, is attached on the fluorescent glue,
For measuring the surface temperature of the fluorescent glue.
A kind of one side according to embodiments of the present invention, there is provided measuring method of the device for measuring properties of fluorescent glue,
Including：The temperature of fluorescent glue is adjusted using temperature regulating device；Excitation source is adopted to irradiate the fluorescent glue described glimmering to excite
Optical cement lights；The light that the fluorescent glue sends is collected using integrating sphere；The light that the integrating sphere is collected is measured.
Further, the fluorescent glue is arranged on the heat-conducting plate of the temperature regulating device, adjusts fluorescence using temperature regulating device
The temperature of glue includes：The temperature of the fluorescent glue is adjusted by the temperature of the regulation heat-conducting plate.
In embodiments of the present invention, using temperature regulating device, fluorescent glue is provided with, for adjusting the temperature of fluorescent glue；Product
Bulb separation, is connected with temperature regulating device, is stimulated the light of generation for collecting fluorescent glue；Spectral radiometer, with integrating sphere
Be connected, for measure integrating sphere collection light, fluorescent glue be stimulated it is luminous, as the temperature of fluorescent glue can affect glimmering
The fluorescence conversion efficiency of optical cement, such as fluorescent glue aging can cause fluorescence conversion efficiency than relatively low at high temperature, therefore,
Fluorescent glue sends different light because of the different of conversion efficiency at different temperature.In measurement process, temperature regulating device
The temperature of fluorescent glue is adjusted obtaining the Stimulated Light under different temperatures.The Stimulated Light that fluorescent glue sends is collected by integrating sphere,
And the parameter of Stimulated Light is measured by spectral radiometer.Divided by the parameter and corresponding temperature of analysis of fluorescence glue exciting light
The rule that the excitation spectrum performance of analysis Stimulated Light is varied with temperature, has reached what analysis excitation spectrum performance was varied with temperature
The technique effect of rule, and then the excitation spectrum performance of fluorescent glue cannot be measured in solving prior art vary with temperature
Rule technical problem.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In accompanying drawing
In：
Fig. 1 is the schematic diagram of the device for measuring properties of fluorescent glue according to embodiments of the present invention；
Fig. 2 is the schematic diagram of the device for measuring properties of a kind of optional fluorescent glue according to embodiments of the present invention；
Fig. 3 is the schematic diagram of temperature regulating device according to embodiments of the present invention；
Fig. 4 is the partial enlarged drawing of the temperature regulating device shown in Fig. 3；And
Fig. 5 is the flow chart of the performance measurement method of fluorescent glue according to embodiments of the present invention.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment
The only embodiment of a present invention part, rather than the embodiment of whole.Based on the embodiment in the present invention, ability
The every other embodiment obtained under the premise of creative work is not made by domain those of ordinary skill, should all belong to
The scope of protection of the invention.
It should be noted that description and claims of this specification and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that this
The data that sample is used can be exchanged in the appropriate case, so as to embodiments of the invention described herein can with except
Here the order beyond those for illustrating or describing is implemented.Additionally, term " comprising " and " having " and they
Any deformation, it is intended that cover non-exclusive process, the side for including, for example, containing series of steps or unit
Method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include unclear
List or other intrinsic for these processes, method, product or equipment step or unit.
According to embodiments of the present invention, there is provided a kind of embodiment of the device for measuring properties of fluorescent glue.
Fig. 1 is the schematic diagram of the device for measuring properties of fluorescent glue according to embodiments of the present invention, as shown in figure 1, this is glimmering
The device for measuring properties of optical cement includes：Temperature regulating device 100, integrating sphere 200 and spectral radiometer 300.Wherein, temperature control
Device 100 is provided with fluorescent glue, for adjusting the temperature of fluorescent glue.Integrating sphere 200 is connected with temperature regulating device, is used
It is stimulated the light of generation in fluorescent glue is collected.Spectral radiometer 300 is connected with integrating sphere 200, for measuring integration
The light that ball is collected.
Fluorescent glue be stimulated it is luminous, as the temperature of fluorescent glue can affect the fluorescence conversion efficiency of fluorescent glue, such as in height
Temperature lower fluorescent glue can aging cause fluorescence conversion efficiency than relatively low, therefore, fluorescent glue is at different temperature because conversion is imitated
Rate different and send different light.In measurement process, temperature regulating device 100 adjusts the temperature of fluorescent glue obtaining not
Stimulated Light under synthermal.The Stimulated Light that fluorescent glue sends is collected by integrating sphere 200, and is surveyed by spectral radiometer 300
The parameter of amount Stimulated Light.The exciting light of Stimulated Light is analyzed by the parameter and corresponding temperature of analysis of fluorescence glue exciting light
The rule that spectrality can be varied with temperature, so as to solve the excitation spectrum performance that cannot analyze Stimulated Light in prior art with
The technical problem of the rule of temperature change, has reached the technique effect of the rule that analysis excitation spectrum performance is varied with temperature.
During the excitation spectrum performance of analysis exciting light, can be using the data is activation for measuring spectral radiometer 300 to computer
400, spectrum property is analyzed by computer 400.
Integrating sphere 200 is the hollow spheres that inwall scribbles diffusive white reflective material, also known as luminosity ball, logical ball of light etc..Ball
One or several fenestras are opened on wall, the receiver hole as light well and placement light receiving element.Above-mentioned control device 100
It is connected with integrating sphere 200 by the light well on ball wall, as shown in Figure 2.Light into integrating sphere is applied through inwall
The multiple reflections of layer, form uniform illumination in inwall, so as to obtain higher accuracy of measurement.In the embodiment
Integrating sphere 200 can be using a diameter of 0.5 meter of integrating sphere.The spectral radiometer 300 can be the quick light of high accuracy
Spectrum radiometer.
As shown in figure 1, the temperature regulating device 100 includes：Temperature regulating device body 102；Excitation source 104 and heating dress
Put 108.Heater 108 is connected with constant-current voltage-stabilizing source 500, is powered for heater 108 in constant-current voltage-stabilizing source 500
When, adjust the temperature of heater 108.Heater 108 is that fluorescent glue 106 provides heat, in fluorescent glue 106
On post thermocouple measurement instrument 600, for measuring the temperature of fluorescent glue 106.Wherein, excitation source 104 can be
The LED blue chips of wavelength needed for measurement, or LED black light chips.
Specifically, as shown in figure 3, being fixed with heat-conducting plate 110 with holes, the heat conduction on temperature regulating device body 102
Fluorescent glue 106 is coated with the hole of plate 110.Temperature regulating device body 102 includes boss 1022 and pedestal 1024, convex
Cooling board 112 is provided with platform 1022, and fixture 114, boss 1022 can be put by the light well of integrating sphere 200
In integrating sphere 200.Wherein, heat-conducting plate 110 with holes is fixed on boss 1022 by fixture 114.Heat-conducting plate
Excitation source 104 (as shown in Figure 4) is placed in 110 hole, is coated with above the surface of heat-conducting plate 110, hole
The hole of heat-conducting plate 110 is covered all by fluorescent glue 106, fluorescent glue 106, prevents the light of excitation source from penetrating from hole
Go out.The surface of heat-conducting plate 110 is provided with heater 108, the heater 108 can be potsherd, lead
The surface of hot plate 110 can arrange one or more potsherd.Heater 108 provides heat to heat-conducting plate 110,
Heat-conducting plate 110 can be stainless steel heat-conducting plate, with preferable thermal conduction characteristic, can conduct heat to fluorescent glue
106 adjusting the temperature of fluorescent glue 106.Electrode 1026 and fan 1028 is provided with pedestal 1024.
In this embodiment, heat-conducting plate with holes can allow the light that excitation source sends to excite fluorescent glue so that fluorescence
Glue is stimulated generation Stimulated Light.And using the good thermal conduction characteristic of heat-conducting plate, the heat that heater is provided is passed
Lead to fluorescent glue so that the temperature of fluorescent glue produces change, the Stimulated Light sent in order to measure fluorescent glue becomes with temperature
The parameter of change.Meanwhile, fluorescent glue covers the hole of heat-conducting plate, prevents the light of excitation source from projecting from hole so that integration
The light that ball is collected is not stimulated the interference of light source.
In addition, excitation source 104 is arranged in the hole of heat-conducting plate 110, its substrate is connect with the surface of cooling board 112
Touch, cooling board 112 can be copper cooling board, can control the temperature of the substrate of excitation source 104, to protect
What card excitation source 104 was stable sends exciting light.As shown in figure 4, the ceramic substrate 1041 of excitation source 104 is adiabatic,
Will not be affected by the temperature of heat-conducting plate, meanwhile, the light that excitation source 104 sends can also be from the Kong Zhongzhao of heat-conducting plate
It is mapped on fluorescent glue, fluorescent glue is excited luminous.The hole of heat-conducting plate is completely covered by fluorescent glue, prevents excitation source
Light is sent from hole, it is to avoid impact of the light that excitation source sends to the parameter of the Stimulated Light of measurement so that measurement fluorescence
The rule that the excitation spectrum performance of glue is varied with temperature is more accurate.
According to embodiments of the present invention, a kind of embodiment of the performance measurement method of fluorescent glue is additionally provided, the fluorescent glue
Performance measurement method can be measured using the device for measuring properties of above-mentioned fluorescent glue.It should be noted that attached
The step of flow process of figure is illustrated can be performed in the such as computer system of one group of computer executable instructions, also,
Although showing logical order in flow charts, in some cases, can be with different from order execution herein
Shown or described step.
As shown in figure 5, the performance measurement method of the fluorescent glue comprises the steps：
Step S502, adjusts the temperature of fluorescent glue using temperature regulating device.
Step S504, adopts excitation source irradiation fluorescent glue to excite fluorescent glue to light.
Step S506, collects the light that fluorescent glue sends using integrating sphere.
Step S508, measures to the light that integrating sphere is collected.
When the performance variation with temperature rule of fluorescent glue is measured, fluorescent glue is adjusted in not equality of temperature using temperature regulating device
Degree, the range of temperature of the fluorescent glue can adjust fluorescent glue according to certain step-length at 25 DEG C to 100 DEG C
Temperature, and measure integrating sphere collection Stimulated Light.For example, the data of collection are as shown in table 1：
Table 1
| Temperature (DEG C) | 25 | 30 | 35 | 40 | …… | 95 |
| Optical parameter A | A1 | A2 | A3 | A4 | …… | An |
| Optical parameter B | B1 | B2 | B3 | B4 | …… | Bm |
Different optical parameter data are corresponded at different temperature, and optical parameter data can reflect excitation spectrum performance, such as
Shown in table 1, the Changing Pattern of optical parameter A at different temperatures can be analyzed, at different temperatures the change of optical parameter B
Law, can be combined with the impact of optical parameter A and optical parameter B analysis temperature to excitation spectrum performance.Therefore, lead to
The change for simulating environment temperature of the fluorescent glue in actual application in measurement process is crossed measuring being excited for fluorescent glue
Spectrum property parameter, so that solve what the excitation spectrum performance that cannot measure fluorescent glue in prior art was varied with temperature
The technical problem of rule, has reached the technique effect of rule that the excitation spectrum performance of measurement fluorescent glue is varied with temperature.
It should be noted that table 1 simply schematically illustrates a kind of data for collecting, the temperature illustrated in table 1 can
To be adjusted with the data different from said temperature interval, the parameter of above-mentioned measurement is not limited to and two optical parameters yet,
Herein only as an example, do not limit the measurable parameter of the present embodiment.
Alternatively, fluorescent glue is arranged on the heat-conducting plate of temperature regulating device, adjusts the temperature bag of fluorescent glue using temperature regulating device
Include：The temperature of fluorescent glue is adjusted by the temperature of regulation heat-conducting plate.Due to adopting control heat conduction during measurement
The temperature of plate is adjusting the temperature of fluorescent glue, and contacts during excitation source is arranged on the hole of heat-conducting plate and with cooling board,
Ensure that while the temperature of fluorescent glue is adjusted, not disturbing the temperature of excitation source, so as to ensure that excitation source energy
Enough stable output exciting lights.
By above-described embodiment, the condition of temperature when the excitation spectrum performance of fluorescent glue is measured, is added, so as to realize
The rule that the excitation spectrum performance of measurement fluorescent glue is varied with temperature, so as to solve cannot measure in prior art it is glimmering
The technical problem of the rule that the excitation spectrum performance of optical cement is varied with temperature, has reached the exciting light spectrality of measurement fluorescent glue
The technique effect of the rule that can be varied with temperature.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in certain embodiment
The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, other can be passed through
Mode realize.Wherein, device embodiment described above is only schematic, such as division of described unit,
Can be a kind of division of logic function, when actually realizing, can have other dividing mode, such as multiple units or component
Can with reference to or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, institute
The coupling each other for showing or discussing or direct-coupling or communication connection can be by some interfaces, unit or mould
The INDIRECT COUPLING of block or communication connection, can be electrical or other forms.
The unit as separating component explanation can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can local to be located at one, or can also be distributed to
On multiple units.Some or all of unit therein can be selected according to the actual needs to realize this embodiment scheme
Purpose.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.It is above-mentioned integrated
Unit both can be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit realized using in the form of SFU software functional unit and as independent production marketing or use when,
Can be stored in a computer read/write memory medium.Based on such understanding, technical scheme essence
On all or part of part that in other words prior art is contributed or the technical scheme can be with software product
Form is embodied, and the computer software product is stored in a storage medium, is used so that one including some instructions
Platform computer equipment (can be personal computer, server or network equipment etc.) performs each embodiment institute of the invention
State all or part of step of method.And aforesaid storage medium includes：USB flash disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), portable hard drive, magnetic disc or CD
Etc. it is various can be with the medium of store program codes.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improve and moisten
Decorations also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of device for measuring properties of fluorescent glue, it is characterised in that include：
Temperature regulating device, is provided with fluorescent glue, for adjusting the temperature of the fluorescent glue；
Integrating sphere, is connected with the temperature regulating device, is stimulated the light of generation for collecting the fluorescent glue；
Spectral radiometer, is connected with the integrating sphere, for measuring the light that the integrating sphere is collected.
2. the device for measuring properties of fluorescent glue according to claim 1, it is characterised in that the temperature regulating device includes：
Temperature regulating device body；
Heat-conducting plate with holes, is fixed on the temperature regulating device body；
Excitation source, is arranged in the hole of the heat-conducting plate, for exciting the fluorescent glue to light, the fluorescence
Glue is covered on the hole, to prevent the light of the excitation source from projecting from the hole；
Heater, is arranged on the surface of the heat-conducting plate, is connected with external power supply, for the heat-conducting plate
Heating.
3. the device for measuring properties of fluorescent glue according to claim 2, it is characterised in that the temperature regulating device body
Including boss and pedestal, the temperature regulating device also includes：
Cooling board, is arranged on the boss, and the heat-conducting plate is fixed on the cooling board, described to swash
The substrate of light emitting source is contacted with the cooling board.
4. the device for measuring properties of fluorescent glue according to claim 3, it is characterised in that the temperature regulating device is also wrapped
Include：
Fixture, for being fixed on the cooling board by the heat-conducting plate.
5. the device for measuring properties of fluorescent glue according to claim 3, it is characterised in that the integrating sphere is provided with
Light well, the boss are loaded in the integrating sphere by the light well.
6. the device for measuring properties of fluorescent glue according to claim 2, it is characterised in that the heater is for setting
Put at least one heating ceramic piece on the heat-conducting plate.
7. the device for measuring properties of fluorescent glue according to claim 2, it is characterised in that the external power supply is horizontal stroke
Stream voltage-stabilized power supply.
8. the device for measuring properties of fluorescent glue according to any one of claim 1 to 7, it is characterised in that described
The device for measuring properties of fluorescent glue also includes thermocouple temperature measurement instrument, is attached on the fluorescent glue, described for measuring
The surface temperature of fluorescent glue.
9. a kind of measuring method of the device for measuring properties of the fluorescent glue based on described in any one in claim 1 to 8,
Characterized in that, including：
The temperature of fluorescent glue is adjusted using temperature regulating device；
Adopt excitation source to irradiate the fluorescent glue to excite the fluorescent glue to light；
The light that the fluorescent glue sends is collected using integrating sphere；
The light that the integrating sphere is collected is measured.
10. method according to claim 9, it is characterised in that the fluorescent glue is arranged on leading for the temperature regulating device
On hot plate, the temperature for adjusting fluorescent glue using temperature regulating device includes：
The temperature of the fluorescent glue is adjusted by the temperature of the regulation heat-conducting plate.
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| CN201510583040.8A CN106525778B (en) | 2015-09-14 | 2015-09-14 | The device for measuring properties and method of fluorescent glue |
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| Publication number | Publication date |
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| CN106525778B (en) | 2019-04-16 |
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