CN106525778B - The device for measuring properties and method of fluorescent glue - Google Patents
The device for measuring properties and method of fluorescent glue Download PDFInfo
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- CN106525778B CN106525778B CN201510583040.8A CN201510583040A CN106525778B CN 106525778 B CN106525778 B CN 106525778B CN 201510583040 A CN201510583040 A CN 201510583040A CN 106525778 B CN106525778 B CN 106525778B
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Abstract
The invention discloses a kind of device for measuring properties of fluorescent glue and methods.Wherein, the device for measuring properties of the fluorescent glue includes: temperature regulating device, is provided with fluorescent glue, for adjusting the temperature of fluorescent glue；Integrating sphere is connected with temperature regulating device, is stimulated the light of generation for collecting fluorescent glue；Spectral radiometer is connected with integrating sphere, for measuring the light of integrating sphere collection.The present invention solves and is unable to measure the regular technical problem that the excitation spectrum performance of fluorescent glue varies with temperature in the prior art.
Description
Technical field
The present invention relates to fluorescent glue fields, in particular to the device for measuring properties and method of a kind of fluorescent glue.
Background technique
As a kind of common LED light source, white light LEDs generally issue by blue light (or black light) with it is (or close by blue light
Ultraviolet light) excited fluophor shines the secondary color white light mixed (based on yellow light).The device is usually by LED blue light core
The composition such as piece, fluorescent powder, sealing material, optical material and encapsulating material.Therefore, from the angle of encapsulation, white light LEDs failure can
The position that can occur is mainly in light such as the sealing materials such as excitation light source, fluorophor, silica gel, interior interconnecting material, lens and reflective layers
Department of the Chinese Academy of Sciences's part and encapsulating material etc..Most of optical performance parameters (e.g., luminous flux, chromaticity coordinates, colour temperature etc.) of LED be all by
What spectral power distribution determined.
Fluorescent glue is usually a kind of composite material being made of fluorescent powder and high molecular polymer glue (e.g., silica gel etc.), it
The key effect of light distribution and color matching is played in white-light LED encapsulation.According to the difference of LED packaging technology, fluorescent glue generally can be with
It is divided into excitation light source and directly contacts or not contact (long-distance fluorescent powder) two kinds of forms.After white light LEDs are lighted, excitation light source is produced
Raw heat can be all transferred on fluorescent glue in various ways, be chronically at it under hot conditions.Usual high temperature can accelerate glimmering
The aging of optical cement is embodied in the reduction of fluorescent powder English light conversion efficiency, high molecular polymer glue yellow etc..Therefore, it studies white
The rule that the excitation spectrum performance of light fluorescent adhesive for LED varies with temperature is necessary, and can be used for analyzing its thermal failure mechanism.
When testing the performance of fluorescent glue temperature condition can not be added to measure in the method for existing fluorescent glue performance test,
Lead to not measure the rule that the excitation spectrum performance of fluorescent glue varies with temperature.
For above-mentioned problem, currently no effective solution has been proposed.
Summary of the invention
The embodiment of the invention provides a kind of device for measuring properties of fluorescent glue and methods, at least to solve in the prior art
It is unable to measure the regular technical problem that the excitation spectrum performance of fluorescent glue varies with temperature.
According to an aspect of an embodiment of the present invention, a kind of device for measuring properties of fluorescent glue is provided, comprising: temperature control dress
It sets, is provided with fluorescent glue, for adjusting the temperature of the fluorescent glue；Integrating sphere is connected, for collecting with the temperature regulating device
The fluorescent glue is stimulated the light of generation；Spectral radiometer is connected with the integrating sphere, collects for measuring the integrating sphere
Light.
Further, the temperature regulating device includes: temperature regulating device ontology；Heat-conducting plate with holes is fixed on the temperature control dress
It sets on ontology；Excitation light source is arranged in the hole of the heat-conducting plate, and for exciting the fluorescent glue to shine, the fluorescent glue covers
It covers on the hole, to prevent the light of the excitation light source from projecting from the hole；The heat-conducting plate is arranged in heating device
Surface is connect with external power supply, for heating to the heat-conducting plate.
Further, the temperature regulating device ontology includes boss and pedestal, the temperature regulating device further include: cooling board,
It is arranged on the boss, the heat-conducting plate is fixed on the cooling board, the substrate of the excitation light source and the cooling
Board contact.
Further, the temperature regulating device further include: fixture, for the heat-conducting plate to be fixed on the cooling board
On.
Further, the integrating sphere is provided with light well, and the boss is packed into the integrating sphere by the light well
In.
Further, the heating device is at least one the heating ceramic piece being arranged on the heat-conducting plate.
Further, the external power supply is crossing current regulated power supply.
Further, the device for measuring properties of the fluorescent glue further includes thermocouple temperature measurement instrument, is attached on the fluorescent glue,
For measuring the surface temperature of the fluorescent glue.
According to an aspect of an embodiment of the present invention, a kind of measurement method of the device for measuring properties of fluorescent glue is provided,
It include: the temperature that fluorescent glue is adjusted using temperature regulating device；Excitation light source is used to irradiate the fluorescent glue to excite the fluorescent glue
It shines；The light that the fluorescent glue issues is collected using integrating sphere；The light collected to the integrating sphere measures.
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: to adjust the temperature of the fluorescent glue by adjusting the temperature of the heat-conducting plate.
In embodiments of the present invention, using temperature regulating device, it is provided with fluorescent glue, for adjusting the temperature of fluorescent glue；Integral
Ball is connected with temperature regulating device, is stimulated the light of generation for collecting fluorescent glue；Spectral radiometer is connected with integrating sphere, uses
In measurement integrating sphere collect light, fluorescent glue be stimulated it is luminous, due to the temperature of fluorescent glue will affect fluorescent glue fluorescence conversion
Efficiency, for example fluorescent glue meeting aging causes fluorescence conversion efficiency relatively low at high temperature, therefore, fluorescent glue is at different temperature
Different light is issued because of the difference of transfer efficiency.In measurement process, temperature regulating device adjusts the temperature of fluorescent glue to obtain not
Stimulated light under synthermal.The stimulated light that fluorescent glue issues is collected by integrating sphere, and by the ginseng of spectral radiometer measurement stimulated light
Number.The excitation spectrum performance that stimulated light is analyzed by the parameter and corresponding temperature of analysis of fluorescence glue exciting light varies with temperature
Rule, reached the technical effect for the rule that analysis excitation spectrum performance varies with temperature, and then solved in the prior art
It is unable to measure the regular technical problem that the excitation spectrum performance of fluorescent glue varies with temperature.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the device for measuring properties of fluorescent glue according to an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of the device for measuring properties of optional fluorescent glue according to an embodiment of the present invention；
Fig. 3 is the schematic diagram of temperature regulating device according to an embodiment of the present invention；
Fig. 4 is the partial enlarged view of temperature regulating device shown in Fig. 3；And
Fig. 5 is the flow chart of the performance measurement method of fluorescent glue according to an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
According to embodiments of the present invention, a kind of embodiment of the device for measuring properties of fluorescent glue is provided.
Fig. 1 is the schematic diagram of the device for measuring properties of fluorescent glue according to an embodiment of the present invention, as shown in Figure 1, the fluorescence
The device for measuring properties of glue includes: temperature regulating device 100, integrating sphere 200 and spectral radiometer 300.Wherein, temperature regulating device 100 is set
It is equipped with fluorescent glue, for adjusting the temperature of fluorescent glue.Integrating sphere 200 is connected with temperature regulating device, is excited for collecting fluorescent glue
Send out the light generated.Spectral radiometer 300 is connected with integrating sphere 200, for measuring the light of integrating sphere collection.
Fluorescent glue be stimulated it is luminous, since the temperature of fluorescent glue will affect the fluorescence conversion efficiency of fluorescent glue, such as in height
The lower fluorescent glue meeting aging of temperature causes fluorescence conversion efficiency relatively low, and therefore, fluorescent glue is at different temperature because of transfer efficiency
It is different and issue different light.In measurement process, temperature regulating device 100 adjusts the temperature of fluorescent glue to obtain under different temperatures
Stimulated light.The stimulated light that fluorescent glue issues is collected by integrating sphere 200, and the parameter of stimulated light is measured by spectral radiometer 300.It is logical
The parameter for analyzing fluorescent glue exciting light and corresponding temperature are crossed to analyze the rule that the excitation spectrum performance of stimulated light varies with temperature
Rule is asked to solve and can not analyze the technology of the rule that the excitation spectrum performance of stimulated light varies with temperature in the prior art
Topic has reached the technical effect for the rule that analysis excitation spectrum performance varies with temperature.Analyze the excitation spectrum performance of exciting light
When, spectrum can be analyzed by computer 400 using the data that spectral radiometer 300 measures are sent to computer 400
Energy.
Integrating sphere 200 is the hollow spheres that inner wall is coated with diffusive white reflective material, also known as luminosity ball, and light leads to ball etc..Ball wall
On open one or several fenestras, as light well and place light receiving element receiver hole.Above-mentioned control device 100 passes through ball wall
On light well be connected with integrating sphere 200, as shown in Figure 2.The multiple reflections for passing through inside coating into the light of integrating sphere,
Inner wall forms uniform illumination, to obtain relatively high accuracy of measurement.Integrating sphere 200 in the embodiment can use diameter
For 0.5 meter of integrating sphere.The spectral radiometer 300 can be high-precision fast spectrum radiometer.
As shown in Figure 1, the temperature regulating device 100 includes: temperature regulating device ontology 102；Excitation light source 104 and heating device 108.
Heating device 108 is connected with constant-current voltage-stabilizing source 500, when constant-current voltage-stabilizing source 500 is that heating device 108 is powered, adjusts heating dress
Set 108 temperature.Heating device 108 is that fluorescent glue 106 provides heat, and thermocouple measurement instrument 600 is posted on fluorescent glue 106,
For measuring the temperature of fluorescent glue 106.Wherein, excitation light source 104 can be the LED blue chip for measuring required wavelength, or
LED black light chip.
Specifically, as shown in figure 3, being fixed with heat-conducting plate 110 with holes on temperature regulating device ontology 102, the heat-conducting plate 110
Hole on be covered with fluorescent glue 106.Temperature regulating device ontology 102 includes boss 1022 and pedestal 1024, is arranged on boss 1022
There are cooling board 112, fixture 114, boss 1022 can be placed in integrating sphere 200 by the light well of integrating sphere 200.Wherein,
Heat-conducting plate 110 with holes is fixed on boss 1022 by fixture 114.104 (such as Fig. 4 of excitation light source is placed in the hole of heat-conducting plate 110
It is shown), fluorescent glue 106 is covered with above the surface, hole of heat-conducting plate 110, fluorescent glue 106 is complete by the hole of heat-conducting plate 110
It covers, the light of excitation light source is prevented to project from hole.The surface of heat-conducting plate 110 is provided with heating device 108, heating dress
Setting 108 can be potsherd, one or more potsherd can be set on the surface of heat-conducting plate 110.108 guide of heating device
Hot plate 110 provides heat, and heat-conducting plate 110 can be stainless steel heat-conducting plate, has preferable thermal conduction characteristic, heat can be passed
Fluorescent glue 106 is directed to adjust the temperature of fluorescent glue 106.Electrode 1026 and fan 1028 are provided on pedestal 1024.
In this embodiment, the light excitation fluorescent glue that heat-conducting plate with holes can allow excitation light source to issue, so that fluorescence
Glue, which is stimulated, generates stimulated light.And the good thermal conduction characteristic of heat-conducting plate is utilized, the heat that heating device is provided is conducted to
Fluorescent glue, so that the temperature of fluorescent glue generates variation, in order to measure the parameter that the stimulated light of fluorescent glue sending varies with temperature.
Meanwhile the hole of fluorescent glue covering heat-conducting plate, prevent the light of excitation light source from projecting from hole, so that the light that integrating sphere is collected is not excited
The interference of light emitting source.
In addition, excitation light source 104 is arranged in the hole of heat-conducting plate 110, substrate is contacted with the surface of cooling board 112,
Cooling board 112 can be copper cooling board, the temperature of the substrate of excitation light source 104 can be controlled, to guarantee excitation light source
104 stable sending exciting lights.As shown in figure 4, the ceramic substrate 1041 of excitation light source 104 is insulated, heat-conducting plate not will receive
The influence of temperature, meanwhile, the light that excitation light source 104 issues can also be irradiated on fluorescent glue from the hole of heat-conducting plate, fluorescent glue quilt
Excitation shines.The hole of heat-conducting plate is completely covered fluorescent glue, prevents the light of excitation light source from issuing from hole, excitation light source is avoided to send out
Influence of the light out to the parameter of the stimulated light of measurement, so that the rule that the excitation spectrum performance of measurement fluorescent glue varies with temperature
It 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
The device for measuring properties that performance measurement method can use above-mentioned fluorescent glue measures.It should be noted that in attached drawing
The step of process illustrates can execute in a computer system such as a set of computer executable instructions, although also,
Logical order is shown in flow chart, but in some cases, it can be to be different from shown by sequence execution herein or retouch
The step of stating.
As shown in figure 5, the performance measurement method of the fluorescent glue includes the following steps:
Step S502 adjusts the temperature of fluorescent glue using temperature regulating device.
Step S504 uses excitation light source irradiation fluorescent glue to excite fluorescent glue to shine.
Step S506 collects the light that fluorescent glue issues using integrating sphere.
Step S508, the light collected to integrating sphere measure.
When measuring the performance variation with temperature rule of fluorescent glue, fluorescent glue is adjusted using temperature regulating device and is in not equality of temperature
The range of temperature of degree, the fluorescent glue can adjust the temperature of fluorescent glue at 25 DEG C to 100 DEG C according to certain step-length
Degree, and measure the stimulated light of integrating sphere collection.For example, the data collected 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 are able to reflect excitation spectrum performance, such as
Shown in table 1, the changing rule of optical parameter A at different temperatures can analyze, at different temperatures the changing rule of optical parameter B,
It can be combined with influence of the optical parameter A and optical parameter B analysis temperature to excitation spectrum performance.Therefore, by measurement process
The variation of simulation fluorescent glue environment temperature in actual application is excited spectrum property parameter measure fluorescent glue, thus
It solves and is unable to measure the regular technical problem that the excitation spectrum performance of fluorescent glue varies with temperature in the prior art, reach
The technical effect for the rule that the excitation spectrum performance of measurement fluorescent glue varies with temperature.
It should be noted that table 1 only schematically illustrates a kind of collected data, temperature shown in table 1 can be with
Be different from above-mentioned temperature interval data be adjusted, the parameter of above-mentioned measurement do not limit to yet with two optical parameters, herein only
As an example, the measurable parameter of the present embodiment is not limited.
Optionally, fluorescent glue is arranged on the heat-conducting plate of temperature regulating device, and the temperature packet of fluorescent glue is adjusted using temperature regulating device
It includes: adjusting the temperature of fluorescent glue by adjusting the temperature of heat-conducting plate.Due to using control heat-conducting plate during measurement
Temperature adjusts the temperature of fluorescent glue, and excitation light source is arranged in the hole of heat-conducting plate and contacts with cooling board, ensure that
While adjusting the temperature of fluorescent glue, the temperature of excitation light source is not interfered, so that ensure that excitation light source can be stable is defeated
Exciting light out.
Through the foregoing embodiment, when measuring the excitation spectrum performance of fluorescent glue, the condition of temperature is added, to realize
The rule that the excitation spectrum performance of measurement fluorescent glue varies with temperature, is unable to measure fluorescent glue to solve in the prior art
The technical problem for the rule that excitation spectrum performance varies with temperature, the excitation spectrum performance for having reached measurement fluorescent glue become with temperature
The technical effect of the rule of change.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of device for measuring properties of fluorescent glue characterized by comprising
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, the light collected for measuring the integrating sphere；
The temperature regulating device includes: temperature regulating device ontology；Heat-conducting plate with holes is fixed on the temperature regulating device ontology；Excitation
Light source is arranged in the hole of the heat-conducting plate, and for exciting the fluorescent glue to shine, the fluorescent glue is covered on the hole,
To prevent the light of the excitation light source from projecting from the hole；The surface of the heat-conducting plate is arranged in heating device, with external electricity
Source connection, for being heated to the heat-conducting plate.
2. the device for measuring properties of fluorescent glue according to claim 1, which is characterized in that the temperature regulating device ontology includes
Boss and pedestal, the temperature regulating device further include:
Cooling board, is arranged on the boss, the heat-conducting plate is fixed on the cooling board, the base of the excitation light source
Plate is contacted with the cooling board.
3. the device for measuring properties of fluorescent glue according to claim 2, which is characterized in that the temperature regulating device further include:
Fixture, for the heat-conducting plate to be fixed on the cooling board.
4. the device for measuring properties of fluorescent glue according to claim 2, which is characterized in that the integrating sphere is provided with entering light
Hole, the boss are fitted into the integrating sphere by the light well.
5. the device for measuring properties of fluorescent glue according to claim 1, which is characterized in that the heating device is that setting exists
At least one heating ceramic piece on the heat-conducting plate.
6. the device for measuring properties of fluorescent glue according to claim 1, which is characterized in that the external power supply is that crossing current is steady
Voltage source.
7. the device for measuring properties of fluorescent glue according to any one of claim 1 to 6, which is characterized in that the fluorescence
The device for measuring properties of glue further includes thermocouple temperature measurement instrument, is attached on the fluorescent glue, for measuring the surface of the fluorescent glue
Temperature.
8. a kind of measurement method of the device for measuring properties based on fluorescent glue described in any one of claim 1 to 7, special
Sign is, comprising:
The temperature of fluorescent glue is adjusted using temperature regulating device；
Excitation light source is used to irradiate the fluorescent glue to excite the fluorescent glue to shine；
The light that the fluorescent glue issues is collected using integrating sphere；
The light collected to the integrating sphere measures.
9. according to the method described in claim 8, it is characterized in that, the heat-conducting plate of the temperature regulating device is arranged in the fluorescent glue
On, include: using the temperature that temperature regulating device adjusts fluorescent glue
The temperature of the fluorescent glue is adjusted by adjusting the temperature of the heat-conducting plate.
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| CN111323398A (en) * | 2018-12-14 | 2020-06-23 | 中国科学院半导体研究所 | Fluorescent material heating test device |
| CN110161010B (en) * | 2019-07-01 | 2021-10-08 | 河海大学常州校区 | Reflective temperature-controllable laser excitation remote fluorescent material testing device |
| CN110308042B (en) * | 2019-07-10 | 2022-02-11 | 河海大学常州校区 | Mechanical damage detection device and method for LED fluorescent glue |
| CN111721745B (en) * | 2020-06-29 | 2023-01-20 | 上海应用技术大学 | Detection apparatus for phosphor powder is ageing |
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