CN109632745A - Angle fluorescent measuring device and method - Google Patents
Angle fluorescent measuring device and method Download PDFInfo
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- CN109632745A CN109632745A CN201811628282.4A CN201811628282A CN109632745A CN 109632745 A CN109632745 A CN 109632745A CN 201811628282 A CN201811628282 A CN 201811628282A CN 109632745 A CN109632745 A CN 109632745A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
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Abstract
The invention relates to a kind of angle fluorescent measuring device and methods, and angle fluorescent measuring device includes light source production module, for emitting laser；Excitation module is arranged on the optical axis direction of laser transmission, for carrying and rotating light source production module and fluorescent material, when Laser emission to fluorescent material, to excite fluorescent material to generate fluorescence；Receiving module is arranged on the optical axis direction of fluorescence transmission, for receiving the fluorescence of unspecified angle when excitation module rotates；Spectrometer is connect with receiving module, the fluorescence spectrum of the fluorescence for testing any angle.The device only needs to measure the fluorescence spectrum of different angle by light source production module, excitation module, receiving module and spectrometer, and structure is simple, integrated level is high and accuracy of measurement is high.
Description
Technical field
This application involves field of spectral analysis technology, more particularly to a kind of angle fluorescent measuring device and method.
Background technique
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) is a kind of all solid state photophore
Part, because it has many advantages, such as that structure is frivolous, low in energy consumption, high-efficient, manufacturing process is simple, in recent years in mobile phone and electricity
Depending on etc. display fields be widely used, while also by it is believed that being one of 21 century most promising product.
The quantum efficiency of OLED fluorescent material include internal quantum efficiency (Internal Quantum Efficiency,
IQE) and external quantum efficiency (External Quantum Efficiency, EQE), due to optical waveguide effect and surface plasma
Volume primitive effect makes most photons generate non-radiative coupling, eventually leads to external quantum efficiency and there was only 20% or so, other
80% light is limited to device inside and can not be emitted, and this light that can not be emitted translates into heat, and thermal accumlation will affect
The stability of machine material and the oxygen performance that blocks water for reducing material, so that the luminous efficiency of OLED sharply declines, therefore mention
The external quantum efficiency of high fluorescent material is very necessary.Dipole orientation due to directly acquiring molecule is difficult, and can lead to
It crosses the dipole orientation for measuring the fluorescence intensity on different angle and different polarization direction to determine molecule and passes through tracking, control hair
Molecular dipole in luminescent material is orientated to improve external quantum efficiency.
Traditionally, fluorescence measuring device has that structure is complicated, volume is larger and accuracy of measurement is lower.
Summary of the invention
The application provides a kind of angle fluorescent measuring device and method, and the apparatus structure is simple, integrated level is high and measurement is quasi-
Exactness is high.
A kind of angle fluorescent measuring device obtains the different angles that the fluorescent material generates for exciting fluorescent material
The fluorescence spectrum of degree, comprising:
Light source production module, for emitting laser；
Excitation module is arranged on the optical axis of laser transmission, for carry and rotate the light source production module and
The fluorescent material, when the Laser emission to the fluorescent material, to excite the fluorescent material to generate fluorescence；
Receiving module is arranged on the optical axis of the fluorescence transmission, for receiving the fluorescence, when the excitation module
When rotating, the fluorescence of any angle is received；
Spectrometer is connect with the receiving module, the fluorescence spectrum of the fluorescence for testing any angle.
In one embodiment, the light source production module emits laser to the excitation mould with+45 ° or -45 ° of directions
Block.
In one embodiment, the excitation module includes cylindrical mirror, stepper motor and connect with the stepper motor
Swing offset platform；The fluorescent material is fixed on the cylindrical mirror, the light source production module, the cylindrical mirror
It is fixed on the swing offset platform；
The stepper motor is for driving the swing offset platform to rotate, to drive the light source production module and described
Fluorescent material synchronous rotary.
In one embodiment, the receiving module includes glan-thompson devating prism, the glan-thompson polarization
Prism is used to receive the fluorescence of any angle, and the fluorescence is decomposed into P-polarized light and S polarized light.
In one embodiment, the receiving module further includes filter plate, the light that the filter plate is transmitted along the fluorescence
Axis direction is arranged after the glan-thompson devating prism, for filtering out the stray light or the S-polarization of the P-polarized light
Stray light in light.
In one embodiment, described device further include:
Collimation lens, the collimation lens are arranged between the light source production module and the excitation module, for pair
The laser of the light source production module transmitting is collimated；
Plano-convex lens, the plano-convex lens are arranged between the collimation lens and the excitation module, and being used for will be described
Laser after collimation lens collimation is focused.
In one embodiment, described device further includes collimation lens barrel, and the collimation lens and the plano-convex lens are along institute
The optical axis direction for stating laser transmission is sequentially arranged in the collimation lens barrel.
In one embodiment, described device further includes radiator, and the radiator is mounted on the light source production module
On, the heat for the light source that sheds.
In one embodiment, described device further includes fiber coupler, is separately connected the spectrometer, the reception
Module, for the fluorescence to be transmitted to the spectrometer.
A kind of angle fluorescent measurement method obtains the different angles that the fluorescent material generates for exciting fluorescent material
The fluorescence spectrum of degree, comprising:
It controls light source production module and emits laser；
Control excitation module carries and rotates the light source production module and fluorescent material, when the Laser emission to institute
When stating fluorescent material, to excite the fluorescent material to generate fluorescence；
It controls and receives module and receives the fluorescence, when the excitation module rotates, receive any angle
The fluorescence；
Control spectrometer tests the fluorescence spectrum of the fluorescence of any angle.
Above-mentioned angle fluorescent measuring device, comprising: light source production module, for emitting laser；Excitation module, setting exist
On the optical axis direction of the laser transmission, for carrying and rotating the light source production module and the fluorescent material, when described
When Laser emission to the fluorescent material, to excite the fluorescent material to generate fluorescence；Receiving module is arranged in the fluorescence
On the optical axis direction of transmission, for receiving the fluorescence, when the excitation module rotates, any angle is received
The fluorescence；Spectrometer is connect with the receiving module, the fluorescence light of the fluorescence for testing any angle
Spectrum.The device only needs that different angle can be measured by light source production module, excitation module, receiving module and spectrometer
Fluorescence spectrum, structure is simple, integrated level is high and accuracy of measurement is high.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the present application, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the structural schematic diagram for the angle fluorescent measuring device that an embodiment provides；
Fig. 2 is the structural schematic diagram for the angle fluorescent measuring device that another embodiment provides；
Fig. 3 is the flow chart for the angle fluorescent measurement method that an embodiment provides.
Specific embodiment
The application in order to facilitate understanding, in order to make the above objects, features, and advantages of the present application more apparent,
The specific embodiment of the application is described in detail with reference to the accompanying drawing.It is explained in the following description many specific
Details gives the better embodiment of the application in order to fully understand the application in attached drawing.But the application can be with
Many different forms are realized, however it is not limited to embodiments described herein.On the contrary, providing these embodiments
Purpose is made to the more thorough and comprehensive of disclosure of this application understanding.The application can be to be much different from being described herein
Other way implement, those skilled in the art can do similar improvement without prejudice to the application intension, therefore
The application is not limited by the specific embodiments disclosed below.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff it is identical.Term used herein is intended merely to description specific embodiment
Purpose, it is not intended that in limitation the application.Term " and or " used herein includes one or more relevant institute's lists
Any and all combinations of purpose.
Fig. 1 is one of the structural schematic diagram for the angle fluorescent measuring device that an embodiment provides, for exciting fluorescent material
To obtain the fluorescence spectrum of the different angle of fluorescent material generation.As shown in Figure 1, angle fluorescent measuring device 100, including light
Source generation module 110, excitation module 120, receiving module 130 and spectrometer 140, in which:
Light source production module 110, for emitting laser.In one embodiment, light source production module 110 can be laser
Diode array, LED ultraviolet source, one or more lasers etc., for providing exciting light, to excite fluorescent material to generate
Fluorescence.Wherein, fluorescent material can be fluorescent powder, fluorescence membrane material etc., and the concrete form of fluorescent material is according to the actual situation
Selection, this embodiment is not limited.
Excitation module 120 is arranged on the optical axis direction of laser transmission, for carrying and rotating light source production module 110
And fluorescent material, when Laser emission to fluorescent material, to excite fluorescent material to generate the fluorescence of different angle.
Excitation module 120 is arranged on the optical axis direction for the laser transmission that light source production module 110 is emitted, and excites mould
Fluorescent material is carried on block 120, fluorescent material is excited after receiving laser and generates fluorescence.In Laser emission to fluorescence
During material, excitation module 110 is rotated, so that light source production module 110 and fluorescent material synchronous rotary are driven,
So that fluorescent material can produce fluorescence after receiving laser excitation.
In one embodiment, light source production module 110 is LED ultraviolet source, the ultraviolet light of LED ultraviolet source transmitting
Be radiated on fluorescent material, cause the circumnuclear electronics of the atom in fluorescent material that energy level transition occurs, i.e., from ground state transition to
The higher excitation state of energy.Since excitation state is unstable, ground state can be very quick returned to, this Process Energy can discharge in the form of light,
To generate fluorescence.Laser fluorescence is easier due to ultraviolet light, using LED ultraviolet source as light source production module
Fluorescence can be quickly generated, to improve the efficiency of measurement.For example, light source production module 110 generates the laser of 415nm, swash
Light emitting excites fluorescent material 124 to generate fluorescence to fluorescent material 124, and the wavelength that fluorescent material 124 generates fluorescence, which is greater than, to swash
The wavelength of light, such as fluorescent material 124 generate the minimum 450nm of wavelength of fluorescence.It is understood that for different fluorescence
Material, the wave-length coverage for generating fluorescence are different.
Receiving module 130 is arranged on the optical axis direction of fluorescence transmission, for when the excitation module rotates,
Receive the fluorescence of any angle.Specifically, the fluorescence of the transmitting of excitation module 120 to receiving module 130 is polarization
Light, behind polarized light emission to receiving module 130, polarised light can be decomposed into P-polarized light and S-polarization by receiving module 130
Light.Since receiving module 130 can only be such that the polarised light polarized towards specific direction passes through, when the fixation of receiving module 130 is put
When setting, the fluorescence in a direction can only be passed through.
Spectrometer 140 is connect with receiving module 130, is distributed for testing fluorescence in the fluorescence spectrum of different angle.Light
Spectrometer 140 is the scientific instrument by the photodegradation of complicated component for spectrum line, can be made of prism or diffraction grating etc..?
After spectrometer receives the fluorescence of the different angle of fluorescent material generation, for the fluorescence of same measuring polarization state different angle
Spectrum.
Above-mentioned angle fluorescent measuring device 100, comprising: light source production module 110, for emitting laser；Excitation module
120, it is arranged on the optical axis direction of laser transmission, for carrying and rotating light source production module 110 and fluorescent material, when sharp
When light emitting to fluorescent material, to excite fluorescent material to generate fluorescence；The optical axis side of fluorescence transmission is arranged in receiving module 130
Upwards, for receiving the fluorescence of any angle when the excitation module rotates；Spectrometer 140, and connects
It receives module 130 to connect, the fluorescence spectrum of the fluorescence for testing any angle.The device only needs to pass through light source
Generation module, excitation module, receiving module and spectrometer can measure the fluorescence spectrum of different angle, and structure is simple, integrated
Degree is high and accuracy of measurement is high.
In one embodiment, light source production module 110, excitation module 120 and receiving module 130 can be placed on together
In one plane, and the central point of three is located on the optical axis of laser transmission.The accuracy of measurement can be improved.
In one embodiment, angle fluorescent measuring device 100 further includes collimation lens 150 and plano-convex lens 160.Wherein:
Collimation lens 150 is arranged between light source production module 110 and excitation module 120, for generating mould to light source
The laser that block 110 emits is collimated；
Plano-convex lens 160 are arranged between collimation lens 150 and excitation module 120, for collimating collimation lens 150
Laser afterwards is focused.
The laser that light source production module 110 emits is diverging light, sends out it with directional light after collimated lens standard 150
Plano-convex lens 160 are incident upon, are focused plano-convex lens 160 to fluorescent material to the directional light, to excite fluorescent material to produce
Raw fluorescence, can be improved the utilization rate of laser.
In one embodiment, angle fluorescent measuring device 100 further includes collimation lens barrel 170, the peace of collimation lens 150
Convex lens 160 can be sequentially arranged in collimation lens barrel 170 along the optical axis direction that laser transmits, and can make device integrated level more
Height, stability are more preferable, and can reduce loss of the fluorescence in transmission process, improve the accuracy of measurement.
In one embodiment, angle fluorescent measuring device 100 further includes radiator (not shown), and radiator can
Heat to be mounted in light source production module 110, for the light source that sheds.By installing heat dissipation on fluorescence measuring device 100
Device, can shed the heat generated in measurement process in time, prevent the excessively high damage caused by device of heat.
In one embodiment, excitation module 120 includes cylindrical mirror 121, stepper motor 122 and connects with stepper motor 122
The swing offset platform 123 connect.Fluorescent material 124 is fixed on cylindrical mirror 121, light source production module 120, cylindrical mirror 121
It is fixed on swing offset platform 123.Stepper motor 122 is for driving swing offset platform 123 to rotate, to drive light source
124 synchronous rotary of generation module 110 and fluorescent material.
In one embodiment, fluorescent material 124 can be attached on cylindrical mirror 121, and cylindrical mirror 121 can pass through branch
Frame is fixed on swing offset platform 123, and cylindrical mirror 121, stepper motor 122 and swing offset platform 123 form an entirety.Light
Source generation module 110 can be by fixed plate fixed placement on swing offset platform 123.After stepper motor 122 starts, step
Swing offset platform 123 is driven to rotate into motor 122, the fluorescent material 124 and light source production module 110 on cylindrical mirror 121 follow
123 synchronous rotary of swing offset platform.
It is understood that synchronous rotary refers to fluorescent material 124 and light source production module 110 while rotating, and rotate
Angle it is identical, to guarantee that the relative position of fluorescent material 124 and light source production module 110 does not change.Testing
Cheng Zhong, the laser that light source production module 110 emits can emit to the same position of fluorescent material 124.
Fig. 2 is the structural schematic diagram for the angle fluorescent measuring device that another embodiment provides.As shown in Fig. 2, receiving module
130 include glan-thompson devating prism 131, and glan-thompson devating prism 131 is used to receive the fluorescence of unspecified angle, and
Fluorescence is decomposed into P-polarized light and S polarized light.
Specifically, the fluorescence that fluorescent material is launched uniformly is dissipated by cylindrical mirror, and the fluorescence of generation is general by Glan soup
P-polarized light and S polarized light are classified as after gloomy devating prism 131.The light-transmitting principle of glan-thompson devating prism 131 such as Fig. 2
Shown, after fluorescence is incident to glan-thompson devating prism 131, glan-thompson devating prism 131 can be in two pieces of crystal
Fluorescence decomposes to the P-polarized light of S polarized light horizontally and vertical direction at interface, the S polarized light of horizontal direction after
Resume it is defeated, and the P-polarized light of vertical direction by fluorescence measuring device shell absorb.Therefore work as glan-thompson devating prism
131 it is horizontal positioned according to such as Fig. 2 when, by the S polarized light being horizontally oriented, revolved when by glan-thompson devating prism 131
Turn 90 ° after, by be vertical direction P-polarized light.Due to glan-thompson devating prism 131 polarization purity compared with
Height changes the polarization state of fluorescence by using glan-thompson devating prism 131, and the accuracy of measurement can be improved.
In one embodiment, light source production module 110 emits laser to excitation module 120 with+45 ° or -45 ° of directions.
When laser is incident on fluorescent material surface with 45 ° or -45 °, the reflected light for generating fluorescence is vertical with refraction light, and mutual is dry
Minimum is disturbed, accuracy of measurement is high.
During the test, laser is emitted with+45 ° or -45 ° to 124 surface of fluorescent material, to excite fluorescent material 124
Generate fluorescence.Start stepper motor 122, make stepper motor 122 that swing offset platform 123 be driven to rotate, to drive light source to generate mould
124 synchronous rotary of block 110 and fluorescent material.Specifically, when exciting light is with+45 ° of incidence, cylindrical mirror 121 goes to from 0 °+
90 °, when exciting light is with -45 ° of incidence, cylindrical mirror 121 goes to -90 ° from 0 °.It is understood that swashing in rotary course
Photoemissive angle remains unchanged, and fluorescent material 124 generates the glimmering of different angle under the laser excitation of identical incident angle
Light, receiving module can receive the fluorescence of unspecified angle.
In one embodiment, the laser that laser generation module 110 generates is swashed with+45 ° of transmittings to 124 surface of fluorescent material
Fluoresced material 124 generates fluorescence.After glan-thompson devating prism 131 receives the fluorescence of a certain angle, by the fluorescence point
Solution is at S polarized light and P-polarized light.If glan-thompson devating prism 131 is horizontal positioned state, the S of the angle fluorescent is inclined
Vibration light passes through.Start stepper motor 122, so that 124 synchronous rotary certain angle of light source production module 110 and fluorescent material, example
It such as can be 5 °, the laser that laser generation module 110 generates still keeps+45 ° of transmittings to 124 surface of fluorescent material, excites fluorescence
The fluorescence of the generation different angle of material 124.After glan-thompson devating prism 131 receives the fluorescence of another angle, by this
The fluorescence of angle resolves into S polarized light and P-polarized light, passes through the S polarised light of the fluorescence received after rotating by a certain angle.
Light source production module 110 and fluorescent material 124 continue to rotate, to generate the fluorescence of different angle.Glan-thompson devating prism
131 receive the fluorescence for the unspecified angle that fluorescent materials 124 generate, and the fluorescence of each angle are decomposed into P-polarized light and S is inclined
Shake light.The spectrometer 140 connecting with receiving module 130 receives the fluorescence of unspecified angle, and tests any angle by spectrometer
The fluorescence spectrum of degree.
It should be noted that spectrometer test is place when glan-thompson devating prism 131 is in horizontal positioned
The fluorescence spectrum of difference fluorescence when S-polarization state；When glan-thompson devating prism 131, which is in vertical, to be placed, spectrometer is surveyed
The fluorescence spectrum of difference fluorescence when examination is in P polarization state.In one embodiment, receiving module 130 further includes filter plate
132, filter plate 132 is arranged after glan-thompson devating prism 131 along the optical axis direction that fluorescence transmits, for filtering out P polarization
The stray light or the stray light in S polarized light of light.
For example, light source production module 110 generates the laser of 415nm, Laser emission to fluorescent material 124 is to excite fluorescence
Material 124 generates fluorescence, and the wavelength that fluorescent material 124 generates fluorescence is greater than the wavelength of laser, such as fluorescent material 124 generates
The minimum 450nm of the wavelength of fluorescence.It is understood that the wave-length coverage for generating fluorescence is not for different fluorescent materials
With.By installing filter plate 132 in receiving module 130, start wavelength can be 450nm, be used for P-polarized light or S
Fluorescence of the polarised light medium wavelength less than 450nm is filtered out as stray light, and only the fluorescence by wavelength not less than 450nm passes through.
The stray light in the stray light or S polarized light of P-polarized light is filtered out by filter plate 132, the accuracy of measurement can be improved.
Glan-thompson devating prism 131 may be mounted in a lens sleeve, and be integrally attached to one with filter plate
On a cage plate, to improve the stability of device.
In one embodiment, angle fluorescent measuring device 100 further includes fiber coupler 180, is separately connected spectrometer
140, receiving module 130, for fluorescence to be transmitted to spectrometer 140.
Fiber coupler 180 can by a lens by fluorescent foci on fiber end face, then pass through optical fiber transmit
To spectrometer 140.The fluorescence spectrum of different angle fluorescence can be measured in S-polarization state respectively by spectrometer 140 and in P
Different angle fluorescence spectrum when polarization state may thereby determine that the dipole orientation of molecule in fluorescent material, according to the dipole of molecule
Orientation further obtains the microstate structure of molecule and the distribution situation of molecule, and then passes through in control fluorescent material points
The dipole orientation of son improves the external quantum efficiency of fluorescent material.
The division of modules is only used for for example, in other embodiments in above-mentioned angle fluorescent measuring device, can
Angle fluorescent measuring device is divided into different modules as required, to complete the whole of above-mentioned angle fluorescent measuring device
Or partial function.
Fig. 3 is the flow chart for the angle fluorescent measurement method that an embodiment provides.As shown in figure 3, a kind of fluorescence intensity is surveyed
Amount method is applied to fluorescence measuring device, for exciting fluorescent material to obtain the fluorescence light that fluorescent material generates different angle
Spectrum, including step 310 is to step 340.
Step 310, control light source production module emits laser；
Step 320, control excitation module carries and rotates the light source production module and fluorescent material, when the laser
When transmitting to the fluorescent material, to excite the fluorescent material to generate fluorescence；
Step 330, it controls and receives the module reception fluorescence and receives any institute when the excitation module rotates
State the fluorescence of angle；
Step 340, control spectrometer tests the fluorescence spectrum of the fluorescence of any angle.
In one embodiment, light source production module can be diode laser matrix, LED ultraviolet source, one or more
Laser etc., for providing exciting light, to excite fluorescent material to generate fluorescence.Wherein, fluorescent material can be fluorescent powder, glimmering
The concrete form of optical thin film material etc., fluorescent material selects according to the actual situation, and this embodiment is not limited.
Excitation module is arranged on the optical axis of laser transmission, for carrying and rotating light source production module and phosphor
Material, when Laser emission to fluorescent material, to excite fluorescent material to generate fluorescence.
Excitation module is arranged on the optical axis for the laser transmission that light source production module is emitted, and carries in excitation module
Fluorescent material, fluorescent material are excited after receiving laser and generate fluorescence.During Laser emission to fluorescent material,
Excitation module is rotated, to drive light source production module and fluorescent material synchronous rotary so that fluorescent material receive it is sharp
It can produce fluorescence after light.
In one embodiment, light source production module is LED ultraviolet source, the ultraviolet light of LED ultraviolet source transmitting
On fluorescent material, cause the circumnuclear electronics of the atom in fluorescent material that energy level transition occurs, i.e., from ground state transition to energy
Higher excitation state.Since excitation state is unstable, ground state can be very quick returned to, this Process Energy can discharge in the form of light, thus
Generate fluorescence.Laser fluorescence is easier due to ultraviolet light, uses LED ultraviolet source can be with as light source production module
Fluorescence is quickly generated, to improve the efficiency of measurement.For example, light source production module generates the laser of 415nm, Laser emission
To fluorescent material to excite fluorescent material to generate fluorescence, the wavelength that fluorescent material generates fluorescence is greater than the wavelength of laser, such as glimmering
The minimum 450nm of wavelength of luminescent material generation fluorescence.It is understood that generating fluorescence for different fluorescent materials
Wave-length coverage is different.
Receiving module is arranged on the optical axis of fluorescence transmission, for receiving fluorescence, when the excitation module rotates
When, receive the fluorescence of any angle.
Specifically, it is polarised light that excitation module, which emits to the fluorescence of receiving module, when polarized light emission to receiving module
Afterwards, polarised light can be decomposed into the polarised light on the direction S and the direction P by receiving module.Since receiving module can only make towards spy
The polarised light for determining direction polarization passes through, therefore when receiving module fixed placement, can only be by glimmering on a polarization direction
Light.
Spectrometer is connect with receiving module, for testing fluorescence in the fluorescence spectrum of different angle.Spectrometer be by
Dividing complicated photodegradation is the scientific instrument of spectrum line, can be made of prism or diffraction grating etc..It is received in spectrometer glimmering
After the fluorescence for the different angle that luminescent material generates, the fluorescence spectrum of same measuring polarization state different angle can be directed to.
Above-mentioned angle fluorescent measurement method emits laser by control light source production module；Control excitation module carrying simultaneously
The light source production module and fluorescent material are rotated, when the Laser emission to the fluorescent material, to excite the fluorescence
Material generates fluorescence；It controls and receives module and receives the fluorescence, when the excitation module rotates, receive any described
The fluorescence of angle；Control the fluorescence spectrum of spectrometer test unspecified angle.The device can measure the fluorescence of different angle
Spectrum, structure is simple, integrated level is high and accuracy of measurement is high.
In one embodiment, light source production module, excitation module and receiving module can be placed in the same plane,
And the central point of three is located on the optical axis of laser transmission.The accuracy of measurement can be improved.
It in one embodiment, further include collimation lens and plano-convex lens.Wherein:
Collimation lens is arranged between light source production module and excitation module, swashs for what is emitted light source production module
Light is collimated；
Plano-convex lens are arranged between collimation lens and excitation module, carry out for the laser after collimating collimation lens
It focuses.
The laser of light source production module transmitting is diverging light, makes it with parallel light emitting to flat after collimated lens are quasi-
Convex lens is focused plano-convex lens to fluorescent material to the directional light, can be with to excite fluorescent material to generate fluorescence
Improve the utilization rate of laser.
It in one embodiment, further include collimation lens barrel, light source production module, collimation lens and plano-convex lens can edges
The optical axis direction of laser transmission is sequentially arranged in collimation lens barrel, can make that device integrated level is higher, stability is more preferable, and
Loss of the fluorescence in transmission process can be reduced, the accuracy of measurement is improved.
It in one embodiment, further include radiator (not shown), radiator is mounted in light source production module,
Heat for the light source that sheds.By installing radiator in angle fluorescent measuring device, can shed in time in measurement process
The heat of middle generation prevents the excessively high damage caused by device of heat.
In one embodiment, excitation module includes cylindrical mirror, stepper motor and the swing offset connecting with stepper motor
Platform.Fluorescent material is fixed on cylindrical mirror, and light source production module, cylindrical mirror are fixed on swing offset platform.Step
Into motor for driving swing offset platform to rotate, to drive light source production module and fluorescent material synchronous rotary.
In one embodiment, fluorescent material can be attached on cylindrical mirror, and cylindrical mirror, which can be fixed by the bracket, to be revolved
In indexable moving stage.Cylindrical mirror, stepper motor and swing offset platform form an entirety.Light source production module can pass through fixation
Plate fixed placement is on swing offset platform.After stepper motor starting, stepper motor drives the rotation of swing offset platform, cylindrical mirror
On fluorescent material and light source production module follow swing offset platform synchronous rotary.
It is understood that synchronous rotary refers to fluorescent material and light source production module while rotating, and the angle rotated
Identical, to guarantee that the relative position of fluorescent material and light source production module does not change, i.e., during the test, light source produces
The laser of raw module transmitting can emit to the same position of fluorescent material.
In one embodiment, receiving module includes glan-thompson devating prism, and glan-thompson devating prism is for connecing
The fluorescence of unspecified angle is received, and fluorescence is decomposed into P-polarized light and S polarized light.
Specifically, the fluorescence that fluorescent material is launched uniformly is dissipated by cylindrical mirror, and the fluorescence of generation is general by Glan soup
P-polarized light and S polarized light are classified as after gloomy devating prism.After fluorescence is incident to glan-thompson devating prism, Glan soup
Fluorescence can be decomposed the P of S polarized light and vertical direction horizontally by general gloomy devating prism at the interface of two pieces of crystal
Polarised light, the S polarized light of horizontal direction continue to transmit, and the P-polarized light of vertical direction is inhaled by the shell of fluorescence measuring device
It receives.Therefore when glan-thompson devating prism is horizontal positioned, by the S polarized light being horizontally oriented, when Glan soup is general
After gloomy devating prism is rotated by 90 °, by be vertical direction P-polarized light.Due to the polarization of glan-thompson devating prism
Purity is higher, changes the polarization direction of fluorescence by using glan-thompson devating prism, and the accurate of measurement can be improved
Property.
In one embodiment, light source production module emits laser to excitation module with+45 ° or -45 ° of directions.Laser with
45 ° or -45 ° when being incident on fluorescent material surface, the reflected light for generating fluorescence is vertical with refraction light, and mutual interference is minimum,
Accuracy of measurement is high.
During the test, laser is glimmering to excite fluorescent material to generate with+45 ° or -45 ° transmittings to fluorescent material surface
Light.Start stepper motor, so that stepper motor is driven the rotation of swing offset platform, to drive light source production module and fluorescent material same
Step rotation.Specifically, when exciting light is with+45 ° of incidence, cylindrical mirror goes to+90 ° from 0 °, when exciting light is with -45 ° of incidence,
Cylindrical mirror goes to -90 ° from 0 °.It is understood that the angle of Laser emission remains unchanged, fluorescent material in rotary course
The fluorescence of different angle is generated under the laser excitation of identical incident angle, receiving module can receive the fluorescence of unspecified angle.
In one embodiment, the laser that laser generation module generates excites fluorescence with+45 ° of transmittings to fluorescent material surface
Material generates fluorescence.After glan-thompson devating prism receives the fluorescence of a certain angle, which is resolved into S polarized light
And P-polarized light.If glan-thompson devating prism is horizontal positioned state, the S polarized light of the angle fluorescent passes through.Starting
Stepper motor, so that light source production module and fluorescent material synchronous rotary certain angle, such as can be 5 °, laser generates mould
The laser that block generates still keeps+45 ° of transmittings to fluorescent material surface, and fluorescent material is excited to generate fluorescence.Glan-thompson polarization
After prism receives the fluorescence of another angle, the fluorescence of the angle is resolved into S polarized light and P-polarized light.Light source production module
Continue to rotate with fluorescent material, glan-thompson devating prism receives the fluorescence for the unspecified angle that fluorescent material generates, and will
The fluorescence of each angle is decomposed into P-polarized light and S polarized light.The spectrometer connecting with receiving module receives the glimmering of unspecified angle
Light, and test the fluorescence spectrum of unspecified angle fluorescence.
It should be noted that spectrometer test is place when glan-thompson devating prism 131 is in horizontal positioned
The fluorescence spectrum of different angle when S-polarization state；When glan-thompson devating prism 131, which is in vertical, to be placed, spectrometer is surveyed
The fluorescence spectrum of different angle when examination is in P polarization state.
In one embodiment, receiving module further includes filter plate, and filter plate exists along the optical axis direction setting that fluorescence transmits
The stray light in stray light or S polarized light after glan-thompson devating prism, for filtering out P-polarized light.
For example, light source production module generates the laser of 415nm, Laser emission to fluorescent material is to excite fluorescent material to produce
Raw fluorescence, the wavelength that fluorescent material generates fluorescence are greater than the wavelength of laser, for example, fluorescent material generate fluorescence wavelength it is minimum
450nm.It is understood that the wave-length coverage for generating fluorescence is different for different fluorescent materials.By receiving
Filter plate is installed, start wavelength can be 450nm, for P-polarized light or S polarized light medium wavelength to be less than 450nm in module
Fluorescence filtered out as stray light, only wavelength is passed through not less than the fluorescence of 450nm.P-polarized light is filtered out by filter plate
Stray light or S polarized light in stray light, the accuracy of measurement can be improved.
Glan-thompson devating prism may be mounted in a lens sleeve, and be integrally attached to one with filter plate
On cage plate, to improve the stability of device.
In one embodiment, further include fiber coupler, be separately connected spectrometer, receiving module, for passing fluorescence
Transport to spectrometer.
Fiber coupler can by a lens by fluorescent foci on fiber end face, be then transmitted through the fiber to
Spectrometer.The fluorescence spectrum of different angle fluorescence can be measured in S-polarization state respectively by spectrometer and in P polarization state
The fluorescence spectrum of different angle fluorescence may thereby determine that the dipole orientation of molecule in fluorescent material, be taken according to the dipole of molecule
To the further microstate structure for obtaining molecule and the distribution situation of molecule, and then pass through molecule in control fluorescent material
Dipole orientation improve fluorescent material external quantum efficiency.
It should be understood that although each step in the flow chart of Fig. 3 is successively shown according to the instruction of arrow,
These steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
Execution there is no stringent sequences to limit, these steps can execute in other order.Moreover, at least one in Fig. 3
It step by step may include that perhaps these sub-steps of multiple stages or stage are not necessarily in synchronization to multiple sub-steps
Completion is executed, but can be executed at different times, the execution sequence in these sub-steps or stage is also not necessarily successively
It carries out, but in turn or can replace at least part of the sub-step or stage of other steps or other steps
Ground executes.
The realization of the modules in fluorescence intensity measurement device provided in the embodiment of the present application can be computer program
Form.The computer program can be run in terminal or server.The program module that the computer program is constituted is storable in
On the memory of terminal or server.When the computer program is executed by processor, side described in the embodiment of the present application is realized
The step of method.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the guarantor of the application
Protect range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of angle fluorescent measuring device obtains the different angle that the fluorescent material generates for exciting fluorescent material
Fluorescence spectrum characterized by comprising
Light source production module, for emitting laser；
Excitation module is arranged on the optical axis of laser transmission, for carrying and rotating the light source production module and described
Fluorescent material, when the Laser emission to the fluorescent material, to excite the fluorescent material to generate fluorescence；
Receiving module is arranged on the optical axis of the fluorescence transmission, for receiving any when the excitation module rotates
The fluorescence of the angle；
Spectrometer is connect with the receiving module, the fluorescence spectrum of the fluorescence for testing any angle.
2. angle fluorescent measuring device according to claim 1, which is characterized in that the light source production module is with+45 °
Or -45 ° of directions emit laser to the excitation module.
3. angle fluorescent measuring device according to claim 1, which is characterized in that the excitation module include cylindrical mirror,
Stepper motor and the swing offset platform being connect with the stepper motor；The fluorescent material is fixed at the cylindrical mirror
On, the light source production module, the cylindrical mirror are fixed on the swing offset platform；
The stepper motor is for driving the swing offset platform to rotate, to drive the light source production module and the phosphor
Expect synchronous rotary.
4. angle fluorescent measuring device according to claim 1, characteristic are, the receiving module includes that Glan soup is general
Gloomy devating prism, the glan-thompson devating prism are used to receive the fluorescence of any angle, and by the fluorescence
It is decomposed into P-polarized light and S polarized light.
5. angle fluorescent measuring device according to claim 4, which is characterized in that the receiving module further includes filtering
Piece, the filter plate is arranged after the glan-thompson devating prism along the optical axis direction that the fluorescence transmits, for filtering out
Stray light in the stray light of the P-polarized light or the S polarized light.
6. angle fluorescent measuring device according to claim 1, which is characterized in that described device further include:
Collimation lens, the collimation lens are arranged between the light source production module and the excitation module, for described
The laser of light source production module transmitting is collimated；
Plano-convex lens, the plano-convex lens are arranged between the collimation lens and the excitation module, are used for the collimation
Laser after collimated is focused.
7. angle fluorescent measuring device according to claim 6, which is characterized in that described device further includes collimation lens barrel,
The collimation lens and the plano-convex lens are sequentially arranged in the collimation lens barrel along the optical axis direction that the laser transmits.
8. angle fluorescent measuring device according to claim 1, which is characterized in that described device further includes radiator, institute
It states radiator to be mounted in the light source production module, the heat for the light source that sheds.
9. angle fluorescent measuring device according to claim 1, which is characterized in that described device further includes fiber coupling
Device is separately connected the spectrometer, the receiving module, for the fluorescence to be transmitted to the spectrometer.
10. a kind of angle fluorescent measurement method obtains the fluorescent material for exciting fluorescent material and generates different angle
Fluorescence spectrum characterized by comprising
It controls light source production module and emits laser；
Control excitation module carries and rotates the light source production module and fluorescent material, when the Laser emission to the fluorescence
When material, to excite the fluorescent material to generate fluorescence；
It controls and receives module and receives the fluorescence, when the excitation module rotates, receive the described of any angle
Fluorescence；
Control spectrometer tests the fluorescence spectrum of the fluorescence of any angle.
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