CN207351905U - Raman spectrum detection device - Google Patents
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- CN207351905U CN207351905U CN201720910373.1U CN201720910373U CN207351905U CN 207351905 U CN207351905 U CN 207351905U CN 201720910373 U CN201720910373 U CN 201720910373U CN 207351905 U CN207351905 U CN 207351905U
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- 238000001237 Raman spectrum Methods 0.000 title claims abstract description 77
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- 238000001914 filtration Methods 0.000 claims description 8
- 238000009738 saturating Methods 0.000 claims description 3
- 238000001069 Raman spectroscopy Methods 0.000 description 25
- 238000010586 diagram Methods 0.000 description 9
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Abstract
The embodiment of the utility model provides a kind of Raman spectrum detection device, which includes：Exciting light sources, are configured to launch exciting light to sample to be tested；Optical devices, be configured to collect from the sample to be tested be excited light irradiation position optical signal；And spectrometer, it is configured to be generated the Raman spectrum of sample to be tested by the optical signal received, wherein the exciting light is separated from each other from the excitation light path that exciting light sources to sample to be tested is passed through with the light path passed through by the optical signal that spectrometer is received from sample to be tested to spectrometer.
Description
Technical field
The embodiment of the utility model is related to Raman spectrum detection field, more particularly to a kind of Raman spectrum detection device.
Background technology
Raman spectrum analysis technology is a kind of contactless spectral analysis technique based on Raman scattering effect, its energy
Qualitative and quantitative analysis is carried out to the component of material.Raman spectrum is a kind of molecular vibration spectrum, it can reflect the fingerprint of molecule
Feature, available for the detection to material.Due to Raman spectrum wave number and incident light wave number difference it is unrelated with light source, only determine
In scattering (determinand), therefore Raman spectrometer can be by detecting determinand for drawing caused by the Ramam effect of exciting light
Graceful spectrum detects and identifies material.Raman spectra detection process has been widely used for liquid safety check, jewelry detection, explosive
The fields such as detection, illicit drugs inspection, medicine detection.
In recent years, Raman spectrum analysis technology is widely used in the field such as dangerous material inspection and Object Classification.
In Object Classification field, due to the color of various materials, different, people usually can not accurate judgement thing qualitative attribution, and
Raman spectrum is by the molecular entergy level structures shape of checking matter, thus Raman spectrum can be as " fingerprint " information of material, for thing
Matter identifies.Therefore Raman spectrum analysis technology is widely used in fields such as customs, public safety, food and medicine, environment.
In existing Raman spectrum detection device, excitation light path and light path are often weight at least a portion
Close, in order to make the exciting light for being reflected or being scattered by determinand not influence the detection of Raman spectrum (flashlight), often use
Dichroscope is divided to realize.High reflectance is presented for exciting light in the dichroscope, and is in then for Raman scattering signal light
Existing high-transmission rate.But in actual use, there is traditional Raman spectrum detection device of dichroscope for weak Raman
The detection result of signal is always undesirable.
Utility model content
In order to solve the above problem existing for traditional Raman spectrum detection device of the prior art, the reality of the utility model
Apply example and provide a kind of new Raman spectrum detection device.
The embodiment of the utility model provides a kind of Raman spectrum detection device, including：
Exciting light sources, are configured to launch exciting light to sample to be tested；
Optical devices, be configured to collect from the sample to be tested be excited light irradiation position optical signal；And
Spectrometer, is configured to be generated the Raman spectrum of sample to be tested by the optical signal received,
Wherein described exciting light is from the excitation light path that exciting light sources to sample to be tested is passed through with being received by spectrometer
The light path passed through from sample to be tested to spectrometer of optical signal be separated from each other.
In one embodiment, the excitation light path that the exciting light is passed through from exciting light sources to sample to be tested is relative to quilt
The optical signal that spectrometer is received deviates at a predetermined angle from the light path that sample to be tested to spectrometer is passed through.
In one embodiment, the predetermined angular is between 15 degree and 90 degree.
In one embodiment, the predetermined angular is between 20 degree and 60 degree.
In one embodiment, the Optical devices include：
First lens, be configured to collect from the sample to be tested be excited light irradiation position optical signal；With
Optical filter, is configured to filter out exciting light from the optical signal by the first lens.
In one embodiment, the predetermined angular is set such that exciting light avoids first lens.
In one embodiment, is provided with the light path that the exciting light is passed through from exciting light sources to sample to be tested
Two lens, second lens are configured to focus on exciting light on sample to be tested.
In one embodiment, the Optical devices include：
First lens, be configured to collect from the sample to be tested be excited light irradiation position optical signal；With
Optical filter, is configured to filter out exciting light from the optical signal by the first lens；
Wherein, the exciting light is by first lens and by first lens focus to the sample to be tested.
In one embodiment, speculum is provided with the excitation light path, the mirror arrangement is drawn into by exciting light
It is directed at first lens.
In one embodiment, first lens are non-spherical lens.
In one embodiment, the diameter of the first lens incides light into the beam diameter more than exciting light and from excitation position
The sum of beam diameter of optical signal of spectrometer.
In one embodiment, the Optical devices include：
First lens, be configured to collect from the sample to be tested be excited light irradiation position optical signal；With
Optical filter, is configured to filter out exciting light from the optical signal by the first lens；
Wherein, the exciting light passes through first lens and by first lens focus to the sample to be tested,
And the exciting light with from the sample to be tested be excited light irradiation position optical signal a part it is spatially mutual
Stagger.
In one embodiment, reflection part is provided with the excitation light path, it is saturating that the reflection part is arranged in first
Between mirror and optical filter and it is configured to guide exciting light to first lens and only partially stops from described to be measured
Sample be excited light irradiation position optical signal.
In one embodiment, projected area of the reflection part on the first lens is less than the area of the first lens.
In one embodiment, the reflection part has the reflector space for being used for reflected excitation light and allows to treat from described
Sample be excited light irradiation position optical signal the light hole that passes through of a part.
In one embodiment, the Optical devices further include：
3rd lens, are configured to focus on by the optical signal of optical filter and pass to spectrometer.
In one embodiment, the optical filter is long pass filter or notch filtering light piece.
By means of the Raman spectrum detection device according to above-described embodiment, can avoid using dichroscope, so as to improve
Accuracy of detection of the Raman spectrum detection device for Raman signal.
Brief description of the drawings
In order to be better understood from the utility model, the embodiment of the utility model will be described according to the following drawings：
Fig. 1 shows the structure diagram of traditional Raman spectrum detection device with dichroscope；
Fig. 2 is shown using the obtained Raman light with miscellaneous peak envelope of Raman spectrum detection device as shown in Figure 1
The schematic diagram of spectrum；
Fig. 3 shows the structure diagram of the Raman spectrum detection device according to one embodiment of the utility model；
Fig. 4 shows the structure diagram of the Raman spectrum detection device according to another embodiment of the utility model；
Fig. 5 shows the structure diagram of the Raman spectrum detection device according to another embodiment of the utility model；
Fig. 6 shows the reflection part in the Raman spectrum detection device according to one embodiment of the utility model；
Fig. 7 a and Fig. 7 b contrasts show the Raman spectrum detection device of embodiment according to the present utility model for miscellaneous peak
The inhibition of envelope；And
Fig. 8 a and Fig. 8 b contrasts show the Raman spectrum detection device of embodiment according to the present utility model for miscellaneous peak
The enlarged drawing of the inhibition of envelope.
Attached drawing is not to all circuits or knot in the Raman spectrum detection device of embodiment according to the present utility model
Structure is shown.The reference numeral identical through all attached drawings represents the same or similar component or feature.
Embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
In specification, the same or similar drawing reference numeral represents the same or similar component.It is following real to the utility model referring to the drawings
The explanation for applying mode is intended to explain the design of the overall utility model of the utility model, and is not construed as to this practicality
A kind of new limitation.
General plotting according to the present utility model, there is provided a kind of Raman spectrum detection device, including：Exciting light sources, match somebody with somebody
It is set to sample to be tested and launches exciting light；Optical devices, are configured to collect the position for the light irradiation that is excited from the sample to be tested
The optical signal put；And spectrometer, it is configured to generate the Raman spectrum of sample to be tested according to the optical signal of reception, wherein described
The light path (referred to as excitation light path) that exciting light is passed through from exciting light sources to sample to be tested and the light received by spectrometer
The light path (referred to as light path) that signal is passed through from sample to be tested to spectrometer is separated from each other.Preferably, excitation light path with
Light path close to.
In addition, in the following detailed description, for ease of explaining, many concrete details are elaborated to provide to present disclosure
The comprehensive understanding of embodiment.It should be apparent, however, that one or more embodiments also may be used in the case of these no details
To be carried out.In other cases, known construction and device is diagrammatically embodied to simplify attached drawing.
Fig. 1 shows a kind of structure diagram of traditional Raman spectrum detection device 100.Set in Raman spectrum detection
Dichroscope 12 is equipped with standby 100.High reflectance is presented for exciting light 11 in dichroscope 12, and for Raman scattering signal light
21 ' are then presented high-transmission rate, and dichroscope is obliquely installed relative to excitation light path and light path.Then, exciting light 11 can
To reflex to sample to be tested 30 by dichroscope 12, and the Raman scattering signal light 21 ' for coming from sample to be tested 30 can be worn
Cross 12 directive spectrometer 40 of dichroscope.
Since sample to be tested is encouraged be subject to exciting light, it can not only launch Raman diffused light, can also be inspired fluorescence,
Therefore in order to obtain pure Raman signal, it is necessary to will be obtained by the processing of such as baseline correction at last spectrometer
Signal subtract fluorescence signal.But when the fluorescence of sample is stronger, it may appear that " miscellaneous peak envelope ", that is, in Raman
There are the relatively large spike noise of amplitude in spectral signal, (intensity of the ordinate in Fig. 2 is normalization as shown in Figure 2
Value).And these miscellaneous peak envelopes can not be removed by baseline correction, it is therefore more likely that causing Raman scattering optical signal impure, finally
The signal measured can include the spike noise of these fluorescence, cause material testing result mistake.By present inventor's
Study for a long period of time discovery, appearance and the dichroscope in Raman spectrum detection device of these miscellaneous peak envelopes have very big relation.For
This, in the embodiment of the utility model, there is provided the Raman spectrum detection device not comprising dichroscope.
Fig. 3 shows the Raman spectrum detection device 200 of an embodiment according to the present utility model.The Raman spectrum detects
Equipment 200 includes：Exciting light sources (such as laser) 10, are configured to launch exciting light 11 to sample to be tested 30；Optical devices
20, be configured to collect from the sample to be tested 30 be excited light 11 irradiation position optical signal 21；And spectrometer 40, match somebody with somebody
It is set to by the optical signal received to generate the Raman spectrum of sample to be tested 30.In this embodiment, exciting light 11 is from excitation light
Light path 31 that source 10 to sample to be tested 30 is passed through and the optical signal 21 that is received by spectrometer 40 are from sample to be tested 30 to spectrum
The light path 32 that instrument 40 is passed through is separated from each other.In this embodiment, due to the light path 31 and the light path of optical signal 21 of exciting light 11
32 is inherently separated, therefore can be to avoid using dichroscope in Raman spectrum detection device 200.
Drawing described above can be effectively inhibited using the above-mentioned Raman spectrum detection device 200 not comprising dichroscope
The spike noise of fluorescence in graceful spectral signal.Fig. 7 a show that traditional Raman spectrum detection device with dichroscope obtains
Spectral signal in miscellaneous peak envelope, Fig. 7 b show the Raman spectrum detection device of embodiment according to the present utility model for
The inhibition of miscellaneous peak envelope.From the contrast of Fig. 7 a and Fig. 7 b it can be seen that the Raman spectrum of embodiment according to the present utility model
Detection device can significantly suppress miscellaneous peak envelope.In order to be shown more clearly that the depression effect for miscellaneous peak envelope, also provide
Fig. 8 a and Fig. 8 b.Fig. 8 a show the office for the obtained spectral signal of Raman spectrum detection device for employing dichroscope 12
Portion's enlarged drawing.And Fig. 8 b show the above-mentioned 200 obtained spectral signal of Raman spectrum detection device not comprising dichroscope
Partial enlarged view.Signal in Fig. 8 a and Fig. 8 b is all to have already passed through baseline correction and remove the processing such as random noise to obtain afterwards
Arrive, both data processing methods can be introduced in the last part of this specification.It can be seen that from Fig. 8 a by baseline correction
After (button baseline), it still can be seen that the higher spike of amplitude in the left part of Fig. 8 a, studied through present inventor
It was found that this is because the noise jamming that dichroscope is brought, if the signal of the raman characteristic peak detected at this time is weaker, its
Amplitude occurs that identification is wrong by the amplitude of the spike occurred with Fig. 8 a left parts is suitable or even less than spike
By mistake.And comparison diagram 8b can be seen that the spectral signal after baseline correction (button baseline), the Raman not comprising dichroscope
Light spectrum detecting apparatus 200 can effectively inhibit the spike noise (i.e. " miscellaneous peak envelope ") of fluorescence, such as can be by Raman spectrum
The noise variance of signal is down to such as about 0.2 low value.
As described above, miscellaneous peak envelope can substantially be reduced using the Raman spectrum detection device 200 not comprising dichroscope, this
It is significant to weak signal Raman detection.When the fluorescence of sample to be tested is stronger and Raman signal is weaker, using containing two
It is detected to the Raman spectrum detection device of Look mirror, Raman optical signal is likely to be submerged in miscellaneous peak envelope and be taken as making an uproar
Sound, and after eliminating the influence of dichroscope, the probability that Raman signal is extracted can greatly improve, so as to improve to fluorescence interference
The detectability of weak Raman signal.
As an example, as shown in figure 3, in Raman spectrum detection device 200, exciting light 11 is from exciting light sources 10 to treating
The light path 31 (hereinafter referred to as excitation light path) that sample 30 is passed through relative to the optical signal 21 received by spectrometer 40 from
The light path 32 (hereinafter referred to as light path) that sample to be tested 30 to spectrometer 40 is passed through deviates at a predetermined angle.This mode
Excitation light path and light path can be separated, and can still make exciting light 11 on sample to be tested 30 irradiation position (or swash
Send out position) it is substantially the same with the position of the collection optical signal 21 of Optical devices 20, so as to avoid the use of dichroscope.
The predetermined angular deviateed on excitation light path and light path, inventor have done in-depth study, on the one hand, in order to
The focal zone of exciting light is allowed to be overlapped as far as possible with the focal zone of the first lens 22 of collection flashlight, therefore the predetermined angular
It is preferred that in the situation for the light tool frame non-contravention that can ensure two light paths (excitation light path and light path) separation and two light paths
Under it is the smaller the better；But then, need to reach certain diameter due to gathering the first lens 22 of flashlight and can just collect foot
Enough flashlights, but the diameter of the first lens 22 is bigger, and the predetermined angular that light path is formed with excitation light path will also be got over
Greatly.Therefore, it is necessary to a best balance is obtained in terms of the two.In one example, the predetermined angular can be at 15 degree
And between 90 degree, preferably between 20 degree and 60 degree.The predetermined angular can interfere with each other to avoid excitation light path and light path.
In one example, Optical devices 200 can include the first lens 22 and optical filter 23.First lens 22 can match somebody with somebody
Be set to collect from the sample to be tested 30 be excited light 11 irradiation position (hereinafter referred to as exciting position) optical signal 21.Make
For example, the first lens 22 can carry out a degree of collimation to optical signal 21.Optical filter 23 can be configured to from by
Exciting light is filtered out in the optical signal of one lens 22.The optical filter 23 set in light path can realize dichroscope completely
The function of long pass filter, and miscellaneous peak envelope caused by dichroscope will not be brought.
As an example, can be provided with the second lens 13 in excitation light path, second lens 13 are configured to excite
Light 11 is focused on sample to be tested 30.However, the second lens 13 it is not necessary to, for example, exciting light 11 can not also pass through
Lens focus and shine directly on sample to be tested 30.
As an example, Optical devices 20 can also include the 3rd lens 24, the 3rd lens 24 are configured to by filtering
The optical signal 21 of piece 23 focuses on and passes to spectrometer 40.3rd lens 24 help to improve spectrometer 40 and receive optical signal
Efficiency.
Fig. 4 shows the structure diagram of the Raman spectrum detection device according to another embodiment of the utility model.
In another example, in Raman spectrum detection device 300 as shown in Figure 4, Optical devices 20 also include first
Lens 22 and optical filter 23.First lens 22 can be configured to collect is excited what light 11 irradiated from the sample to be tested 30
The optical signal 21 of position.The exciting light 11 is by first lens 22 and is focused to by first lens 22 described to be measured
On sample 30, and the optical signal 21 of spectrometer 40 is incided in the exciting light 11 and the excitation position from the sample to be tested 30
Light path spatially mutually staggers.In this example, can also avoid using dichroscope.For example, a diameter can be selected
Relatively large first lens 22, make it be enough while optical signal 21 are collected on a region of the lens, at another
To exciting light 11 into line convergence on region.What the two regions were spatially separated.As an example, the light due to exciting light 11
Beam diameter is typically smaller than the beam diameter for the optical signal 21 for coming from excitation position, can guide exciting light 11 to the first lens
On 22 region by proximal edge, and the region for reserving larger area is used to collect optical signal 21.As an example, first lens
22 diameter can be set greater than the beam diameter of exciting light 11 and come from excitation position and the light received by spectrometer 40
The sum of beam diameter of signal 21.This can make excitation light path and light path both passes through the first lens 22 and non-intersect.
In the examples described above, for assemble exciting light 11 lens and the lens for collecting optical signal 21 be same
Mirror, it is therefore convenient to which exciting light 11 is excited position adjustment in the focus of first lens 22 on sample to be tested 30
Place, and contribute to improve collection efficiency from the focal point of the first lens 22 to collect optical signal 21, this can significantly be carried
The intensity for the optical signal 21 that height is collected into.First lens 22 can will come from the optical signal for the excitation position for being located at its focal point
21 are collimated into approximately parallel light beam, this also contributes to the transmission of optical signal 21.
In one example, can be described in order to directionally guide exciting light to the suitable region of the first lens 22
Speculum 14 is set in excitation light path, and the speculum 14 is configured to guide exciting light 11 to first lens 22.
As an example, first lens 22 can be non-spherical lens, this helps avoid optical path distortion, especially right
In larger-diameter first lens 22.Since the different zones of the first lens 22 are respectively used to assemble exciting light 11 and collect light letter
Numbers 21, therefore prevent that optical path distortion is also particularly useful.
Fig. 5 shows the structure diagram of the Raman spectrum detection device according to another embodiment of the utility model.
In another example, in Raman spectrum detection device 400 as shown in Figure 5, Optical devices 20 also include first
Lens 22 and optical filter 23.First lens 22 can be configured to collect is excited what light 11 irradiated from the sample to be tested 30
The optical signal 21 of position.The exciting light 11 is by first lens 22 and is focused to by first lens 22 described to be measured
On sample 30, and a part for the exciting light 11 and the optical signal 21 of the excitation position from the sample to be tested 30 is in space
On mutually stagger.In this example, exciting light 11 is only spatially mutually wrong with a part (rather than whole) for optical signal 21
Open, another part optical signal 21 without staggering with exciting light 11 may will be unable to reach spectrometer.It means that it can fit
Locality, which sacrifices a part, to be carried out the optical signal 21 of self-excitation position and achievees the purpose that to avoid to use dichroscope.
In this example, for assemble exciting light 11 lens and the lens for collecting optical signal 21 be same
Mirror, it is therefore convenient to which exciting light 11 is excited position adjustment in the focus of first lens 22 on sample to be tested 30
Place, and contribute to improve collection efficiency from the focal point of the first lens 22 to collect optical signal 21, this can also be significantly
The intensity for the optical signal 21 being collected into is improved, the optical signal 21 come from positioned at the excitation position of its focal point can also be collimated
Into approximately parallel light beam.It is additionally, since and does not require exciting light 11 with all optical signals 21 by the first lens 22 in sky
Between on mutually stagger, therefore, this is it is also possible that space layout is more compact.
As an example, reflection part 15 can be provided with the excitation light path.The reflection part 15 can be arranged
Between the first lens 22 and optical filter 23 and it is configured to guide exciting light 11 to first lens 22 and only partially
Stop the optical signal 21 of the excitation position from the sample to be tested 30.In this example, reflection part 15 is not arranged only at sharp
Shine in 11 light path, be further placed in the light path of Optical devices 2.However, exciting light 11 is from exciting light sources 20 to treating test sample
What the light path 31 that product 30 are passed through was passed through with the optical signal 21 received by spectrometer 40 from sample to be tested 30 to spectrometer 40
Light path 32 is still what is be separated from each other, because part optical signal 21 not separated with exciting light 11 is hindered by reflection part 15
Gear, without being received by spectrometer 40.The part optical signal 21 received by spectrometer 40 is from sample to be tested 30 to spectrum
The light path 32 that instrument 40 is passed through is still to be separated with excitation light path.In the example of hgure 5, reflection part 15 will be saturating by first
The center section of optical signal 21 collected by mirror 22 stops, these signal portions being blocked cannot reach spectrometer
40., still can be with directive spectrometer 40 and the signal portions of 15 surrounding of reflection part are not stopped then by reflection part 15.Most
The light path that the optical signal of Zhongdao up to spectrometer 40 is undergone is separated still with excitation light path.
As an example, projected area of the reflection part 15 on the first lens 22 is necessarily less than the face of the first lens 22
Product, such as can be 50%, 30%, 10% or smaller of the area of the first lens 22, it is preferably the area of the first lens 22
20% to 40%.This can ensure that reflection part 15 is not stopped as all optical signals 21 collected by the first lens 22.It is logical
Chang Eryan, the reduction of projected area of the reflection part 15 on the first lens 22 are conducive to bring up to the optical signal up to spectrometer 40
Intensity.But the diameter of reflection part 15 can not be too small, it is also necessary to ensures the exciting light 11 being reflected on sample to be tested 30
Amount carry out Raman detection enough.As an example, reflection part 15 can be by axis court of the exciting light 11 along the first lens 22
Guided to the first lens 22.The part of the reflected excitation light 11 of reflection part 15 is preferably placed on the axis of the first lens 22, but
The utility model not limited to this.
In one example, which can be an entity speculum, as shown in Figure 5.Alternatively, it can also have
There are other forms, such as shown in fig. 6, reflection part 15 can have reflector space 16 and the permission for reflected excitation light 11
The light hole 17 that a part for the optical signal 21 of excitation position from the sample to be tested 30 passes through.As an example, echo area
Domain 16 can be located at the core of reflection part 15, and light hole 17 can be located at the radial outside of reflector space 16.At this
In the case of kind, the area of reflector space 16 is also in compliance with ratio above-mentioned.This structure is more advantageous to adjustment and fixation reflex
Component 15.The global shape of reflection part 15 can be that circle, rectangle, square, hexagon etc. are variously-shaped.
As an example, Optical devices 20 can also include the 3rd lens 24, the 3rd lens 24 are configured to by filtering
The optical signal 21 of piece 23 focuses on and passes to spectrometer 40.3rd lens 24 help to improve spectrometer 40 and receive optical signal
Efficiency.
As an example, the optical filter 23 can be long pass filter or notch filtering light piece.It can effectively filter auspicious
Profit scattering light.In the optical signal 21 being collected into by the first lens 22, Raman optical signal 21 is often not only included, is also accompanied by
Reyleith scanttering light, fluorescence etc..Exciting light has the wavelength more shorter than Raman light, therefore can utilize long pass filter or notch filtering light piece
Remove.The cutoff wavelength of long pass filter or the notch filtering light piece can be set according to actual requirement, such as in Raman light
In the case that the wave-length coverage of the Raman spectrum handled by spectrometer in spectrum detection device is 550 to 1100 nanometers, it can incite somebody to action
Cutoff wavelength is set to allow for the light of the scope to pass through.
In addition, in order to remove the interference in optical signal 21, the spectroscopic data obtained by the Raman spectrum detection device may be used also
To carry out random noise removal and baseline correction processing, to reduce influence of noise.It is to remove to be wrapped in spectrum that random noise, which removes,
The random noise contained, common method include but not limited to：Moving window average exponential smoothing, multinomial moving average filter method
Deng.In addition, before spectrum is analyzed, certain suppression can also be taken fluorescence background.Baseline correction is exactly to be used to go
Except the fluorescence signal in flashlight, so as to obtain purer Raman signal.Common method includes but not limited to：Multinomial is intended
Conjunction, wavelet transformation technique, Fourier Transform Technique etc..Processing to signal is not limited to both the above processing method.
The Raman spectrum detection device of embodiment according to the present utility model, passes through the separation of excitation light path and light path
Design, avoids using dichroscope, it is suppressed that the miscellaneous peak envelope caused by dichroscope, improves the inspection of Raman signal
Precision is surveyed, especially improves the ability of resistance fluorescence interference.
Unless there are technology barrier or contradiction, the above-mentioned various embodiments of the utility model can be freely combined to be formed
Further embodiment, these further embodiments are in the scope of protection of the utility model.
Although the utility model is illustrated with reference to attached drawing, the embodiment disclosed in attached drawing is intended to this practicality
New preferred embodiment is illustrative, and it is not intended that limiting one kind of the utility model.Ruler in attached drawing
Very little ratio is only schematical, can not be interpreted as the limitation to the utility model.
Although some embodiments of the utility model general plotting are shown and illustrate, those of ordinary skill in the art will
Understand, in the case of the principle and spirit conceived without departing substantially from this totality utility model, these embodiments can be made a change, this
The scope of utility model is limited with claim and their equivalent.
Claims (17)
- A kind of 1. Raman spectrum detection device, it is characterised in that including：Exciting light sources, are configured to launch exciting light to sample to be tested；Optical devices, be configured to collect from the sample to be tested be excited light irradiation position optical signal；AndSpectrometer, is configured to be generated the Raman spectrum of sample to be tested by the optical signal received,The excitation light path that wherein described exciting light is passed through from exciting light sources to sample to be tested and the light received by spectrometer The light path that signal is passed through from sample to be tested to spectrometer is separated from each other.
- 2. Raman spectrum detection device as claimed in claim 1, it is characterised in that the exciting light is from exciting light sources to treating The excitation light path that sample is passed through from sample to be tested to spectrometer relative to being passed through by the optical signal that spectrometer is received Light path deviates at a predetermined angle.
- 3. Raman spectrum detection device as claimed in claim 2, it is characterised in that the predetermined angular 15 degree and 90 degree it Between.
- 4. Raman spectrum detection device as claimed in claim 2, it is characterised in that the predetermined angular 20 degree and 60 degree it Between.
- 5. Raman spectrum detection device as claimed in claim 2, it is characterised in that the Optical devices include：First lens, be configured to collect from the sample to be tested be excited light irradiation position optical signal；WithOptical filter, is configured to filter out exciting light from the optical signal by the first lens.
- 6. Raman spectrum detection device as claimed in claim 5, it is characterised in that the predetermined angular is set such that excitation Light avoids first lens.
- 7. Raman spectrum detection device as claimed in claim 2, it is characterised in that the exciting light from exciting light sources to The second lens are provided with the light path that sample to be tested is passed through, second lens are configured to exciting light focusing on sample to be tested On.
- 8. Raman spectrum detection device as claimed in claim 1, it is characterised in that the Optical devices include：First lens, be configured to collect from the sample to be tested be excited light irradiation position optical signal；WithOptical filter, is configured to filter out exciting light from the optical signal by the first lens；Wherein, the exciting light is by first lens and by first lens focus to the sample to be tested.
- 9. Raman spectrum detection device as claimed in claim 8, it is characterised in that reflection is provided with the excitation light path Mirror, the mirror arrangement are guided to first lens into by exciting light.
- 10. Raman spectrum detection device as claimed in claim 8, it is characterised in that first lens are non-spherical lens.
- 11. Raman spectrum detection device as claimed in claim 8, it is characterised in that the diameter of the first lens is into more than excitation The sum of the beam diameter of optical signal of the beam diameter of light with inciding spectrometer from excitation position.
- 12. Raman spectrum detection device as claimed in claim 1, it is characterised in that the Optical devices include：First lens, be configured to collect from the sample to be tested be excited light irradiation position optical signal；WithOptical filter, is configured to filter out exciting light from the optical signal by the first lens；Wherein, the exciting light is by first lens and by first lens focus to the sample to be tested, and institute Exciting light is stated with spatially mutually staggering from the be excited part of optical signal of position of light irradiation of the sample to be tested.
- 13. Raman spectrum detection device as claimed in claim 12, it is characterised in that be provided with the excitation light path anti- Penetrate component, the reflection part is arranged between the first lens and optical filter and is configured to guide exciting light to described first saturating Mirror and only partially stop from the sample to be tested be excited light irradiation position optical signal.
- 14. Raman spectrum detection device as claimed in claim 13, it is characterised in that the reflecting surface of the reflection part exists Projected area on first lens is less than the area of the first lens.
- 15. Raman spectrum detection device as claimed in claim 13, it is characterised in that the reflection part, which has, to be used to reflect The reflector space of exciting light and allow to pass through from the be excited part of optical signal of position of light irradiation of the sample to be tested Light hole.
- 16. such as the Raman spectrum detection device any one of claim 5,6 and 8-15, it is characterised in that the optics Device further includes：3rd lens, are configured to focus on by the optical signal of optical filter and pass to spectrometer.
- 17. such as the Raman spectrum detection device any one of claim 5,6 and 8-15, it is characterised in that the optical filtering Piece is long pass filter or notch filtering light piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720910373.1U CN207351905U (en) | 2017-07-25 | 2017-07-25 | Raman spectrum detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720910373.1U CN207351905U (en) | 2017-07-25 | 2017-07-25 | Raman spectrum detection device |
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| Publication Number | Publication Date |
|---|---|
| CN207351905U true CN207351905U (en) | 2018-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720910373.1U Withdrawn - After Issue CN207351905U (en) | 2017-07-25 | 2017-07-25 | Raman spectrum detection device |
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| Country | Link |
|---|---|
| CN (1) | CN207351905U (en) |
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2017
- 2017-07-25 CN CN201720910373.1U patent/CN207351905U/en not_active Withdrawn - After Issue
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