CN206479455U - Raman spectrum detection device - Google Patents
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- CN206479455U CN206479455U CN201720078960.9U CN201720078960U CN206479455U CN 206479455 U CN206479455 U CN 206479455U CN 201720078960 U CN201720078960 U CN 201720078960U CN 206479455 U CN206479455 U CN 206479455U
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Abstract
Embodiment of the present utility model provides a kind of Raman spectrum detection device.The Raman spectrum detection device includes：Laser, for launching exciting light；Optical devices, for guiding to testing sample and collecting the optical signal from the testing sample exciting light；Spectrometer, carries out light splitting to generate the Raman spectrum of testing sample for the optical signal to reception；And area network safety detector, for detecting the infrared light that the testing sample is sent.By means of the Raman spectrum detection device according to above-described embodiment, it can prevent in Raman spectrum detection process because sample overheats damage and causes safety issue.
Description
Technical field
Embodiment of the present 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 composition of material.Raman spectrum is a kind of molecular vibration spectrum, and it can reflect the fingerprint of molecule
Feature, available for the detection to material.Raman spectrum is detected by detecting Raman scattering effect institute of the determinand for exciting light
The Raman spectrum of generation detects and recognized material.Raman spectra detection process has been widely used for liquid safety check, jewelry inspection
The fields such as survey, explosive 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, different of various materials, people generally can not accurately judge thing qualitative attribution, and
Raman spectrum by checking matter molecular entergy level structures shape, thus Raman spectrum can as material " fingerprint " information, for thing
Matter is recognized.Therefore Raman spectrum analysis technology is widely used in fields such as customs, public safety, food and medicine, environment.
Utility model content
For link one or more problems of the prior art at least in part, it is proposed that a kind of higher drawing of security
Graceful light spectrum detecting apparatus.
Embodiment of the present utility model provides a kind of Raman spectrum detection device, including：
Laser, for launching exciting light；
Optical devices, for guiding to testing sample and collecting the light letter from the testing sample exciting light
Number；
Spectrometer, carries out light splitting to generate the Raman spectrum of testing sample for the optical signal to reception；And
Area network safety detector, for detecting the infrared light that the testing sample is sent.
In one embodiment, the Optical devices include：
Raman light signal collection light path, for collecting the Raman optical signal from the testing sample, wherein, drawn described
Graceful optical path signal is collected in light path and is provided with the first spectroscope, and first spectroscope is arranged to from Raman light path signal collection light
Infra-red radiation branch road is formed in road, the infrared light in the light of testing sample is guided towards area network safety detector.
In one embodiment, first spectroscope is short logical dichroscope, and the short logical dichroscope is arranged to ripple
The long light more than predetermined wavelength reflects towards area network safety detector, and it is described short wavelength is passed through less than the light transmission of the predetermined wavelength
Logical dichroscope, the predetermined wavelength is between 700 nanometers to 300 microns.
In one embodiment, first spectroscope is arranged to reflect a part of light towards safety detection detector, and
Another part light is transmitted towards spectrometer.
In one embodiment, also include in the Raman light signal collection light path：
First convergent lens, first convergent lens is used to exciting light converging to testing sample and collected to be measured
The optical signal of sample；
Second convergent lens, second convergent lens is used to the next optical signal of collection converging to spectrometer；And
Second spectroscope, second spectroscope is located at the first spectroscope and the in the Raman light signal collection light path
Between two convergent lenses or between the first spectroscope and the first convergent lens, it is arranged for that swashing for laser will be come from
Light reflected to first convergent lens and make by the first convergent lens collect the reflected light from testing sample at least
A part is transmitted through with the second convergent lens described in directive.
In one embodiment, second spectroscope is long logical dichroscope.
In one embodiment, long pass filter piece or notch filter piece are additionally provided with the Raman light signal collection light path,
The long pass filter piece or notch filter piece are located at described first spectroscopical downstream, for filtering out after the first spectroscope
Optical signal in Reyleith scanttering light.
In one embodiment, long pass filter piece or notch filter piece are additionally provided with the Raman light signal collection light path,
The long pass filter piece or notch filter piece are located between the testing sample and spectrometer, for filtering out the Rayleigh in optical signal
Light.
In one embodiment, the Optical devices include：
Raman light signal collection light path, for collecting the Raman optical signal from the testing sample；And
Infrared light collects light path, and for collecting the infrared light from the testing sample, it is complete that the infrared light collects light path
Entirely independently of the Raman light signal collection light path.
In one embodiment, the Raman spectrum detection device also includes controller, and the controller receives the safety
The testing result of detector simultaneously sends control signal to the laser, and the controller is configured to detect by area network safety detector
The emittance of the infrared light arrived reduces the power or shut-off laser of laser when exceeding predetermined threshold.
In one embodiment, the Optical devices are integrated in fibre-optical probe, and the exciting light that the laser is sent passes through
Import optical fiber and import the fibre-optical probe, the fibre-optical probe is sent to light by collecting optical fiber by the Raman optical signal being collected into
Spectrometer.
By means of the Raman spectrum detection device according to above-described embodiment, can prevent in Raman spectrum detection process because
Cause safety issue for sample overheat damage.
Brief description of the drawings
In order to be better understood from the utility model, embodiment of the present utility model will be described according to the following drawings：
Fig. 1 shows the schematic diagram of the Raman spectrum detection device according to the embodiment of the utility model one；
Fig. 2 shows the schematic diagram of the Raman spectrum detection device according to another embodiment of the utility model；
Fig. 3 shows the schematic diagram of the Raman spectrum detection device according to the another embodiment of the utility model；
Fig. 4 shows the schematic diagram of the Raman spectrum detection device according to the utility model another embodiment；
Fig. 5 shows the schematic diagram of the Raman spectrum detection device according to another embodiment of the utility model；
Fig. 6 shows the flow of the method for safety monitoring of the Raman spectrum detection device according to the embodiment of the utility model one
Figure；And
Fig. 7 shows the schematic diagram of the Raman spectrum detection device according to another embodiment of the utility model.
Accompanying drawing is not shown to all circuits or structure of embodiment.Through all accompanying drawing identical reference tables
Show same or analogous part or feature.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
In specification, same or analogous drawing reference numeral represents same or analogous part.It is following real to the utility model referring to the drawings
The explanation for applying mode is intended to explain overall utility model design of the present utility model, and is not construed as to this practicality
A kind of new limitation.
According to general plotting of the present utility model there is provided a kind of Raman spectrum detection device, including：Laser, for sending out
Penetrate exciting light；Optical devices, for guiding to testing sample and collecting the light letter from the testing sample exciting light
Number；Spectrometer, carries out light splitting to generate the Raman spectrum of testing sample for the optical signal to reception；And area network safety detector,
For detecting the infrared light that the testing sample is sent.
In addition, in the following detailed description, for ease of explaining, elaborating many concrete details 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 diagrammatically embodies to simplify accompanying drawing.
Fig. 1 shows the structural representation of the Raman spectrum detection device 100 according to the utility model embodiment.It is described to draw
Graceful light spectrum detecting apparatus 100 includes：Laser 10, for launching exciting light 11；Optical devices 20, for by the exciting light 11
Guiding is to testing sample 30 and collects the optical signal from the testing sample 30；Spectrometer 40, for the optical signal to reception
Light splitting is carried out to generate the Raman spectrum of testing sample 30；And area network safety detector 50, for detecting that the testing sample 30 is sent out
The infrared light 31 gone out.As an example, the Raman spectrum of the testing sample 30 generated by spectrometer 40 can be with known substance drawing
Graceful spectrum is compared to determine the composition of testing sample 30.This for example can relatively be completed by computer or processor.
During Raman detection, produce safety problem causes temperature to rise often caused by sample heat absorption, and then have can
It can cause the ablation to measured object, or even produce the phenomenon such as ignite, ignite.And in embodiment of the present utility model, employ
Area network safety detector (such as infrared detector) 50 detects infrared light 31 that the testing sample 30 is sent, can monitor and treat test sample
The temperature of product 30.This is due to that the emittance that infrared light is usually associated with when the rising of sample temperature is increased.And by right
In infrared light emittance monitoring just it can be found that testing sample 30 temperature variations and in time control laser go out beam,
So as to avoid the occurrence of security incident.
In one example, as shown in Fig. 2 Optical devices 20 can include Raman light signal collection light path 21, for collecting
Raman optical signal from the testing sample 30.The first spectroscope is provided with the Raman light path signal collection light path 21
22, first spectroscope 22 is arranged to from Raman light path signal collection light path 21 form infra-red radiation branch road 23, with the future
Guided from the infrared light in the light of testing sample 30 towards area network safety detector 50.First spectroscope 22 can be by testing sample 30
The infrared light sent is extracted from Raman light path signal collection light path 21, can not influence the feelings of Raman optical signal as far as possible
Infrared light is detected under condition.As an example, the first spectroscope 22 requires that not influenceing Raman light as far as possible (be usually 0-
3000cm‐1Scope) on the premise of, as far as possible by the infrared light reflection of area network safety detector response wave band to area network safety detector.Certainly,
The processing such as waveband selection, convergence can be carried out to the infrared light in infra-red radiation branch road 23 as needed.
In the examples described above, the light path that the light path and Raman light that infrared light is passed through are passed through is (close to treat test sample in front end
One end of product 30) it is identical, the infrared light collected by this way can preferably embody the actual temperature of testing sample 30.
As an example, the first spectroscope 22 is short logical dichroscope, the short logical dichroscope is arranged to wavelength being more than
The light of predetermined wavelength reflects towards area network safety detector 50, and it is described short by logical two wavelength is passed through less than the light transmission of the predetermined wavelength
To Look mirror.For example, the predetermined wavelength can be between 700 nanometers to 300 microns, such as between 900 nanometers to 1500 nanometers, such as
Predetermined wavelength can be set to 1200 nanometers.But the predetermined wavelength of the short logical dichroscope in embodiment of the present utility model is not
It is limited to this scope.Generally, the wave-length coverage of the Raman spectrum handled by the spectrometer in Raman spectrum detection device be 550 to
1100 nanometers.The light that wavelength is shorter than the predetermined wavelength can be transmitted through the short logical dichroscope (such as transmissivity can be
More than 90%) influence, there is no on Raman spectrum detection, wavelength be longer than the predetermined wavelength light can be reflected to it is red
Area network safety detector 50 is transferred in external radiation branch road.And corresponding infrared light will be received analysis by area network safety detector.And it is typical
Area network safety detector response wave band be, for example, 1500 to 3000 nanometers.But embodiment not limited to this of the present utility model.
Although in the examples described above, being introduced with short logical dichroscope for the first spectroscope 22, this is not must
Must, it would however also be possible to employ any other wavelength known in the art selects light splitting part to realize the first spectroscope 22.
In embodiments herein, the first spectroscope 22 can also for example be realized using common spectroscope.As showing
Example, the first spectroscope can be arranged to reflect a part of light towards safety detection detector, and by another part light towards light
Spectrometer is transmitted.This can also realize signal light collecting function and temperature-monitoring function.
In one example, exemplary Raman spectrum detection device 100b as shown in Figure 2, Raman light signal collection light path
The first convergent lens 24, the second convergent lens 41 and the second spectroscope 25 can be additionally provided with 21.First convergent lens
24 are used to exciting light 11 converging to testing sample 30 and collect the optical signal from testing sample 30.Second convergent lens 41 is used
Spectrometer is converged in next optical signal will be collected.Second spectroscope 25 is in the middle position of Raman light signal collection light path 21
Between the first convergent lens 24 and the first spectroscope 22, the exciting light 11 to first by laser 10 is come from is arranged for
At least a portion that convergent lens 24 reflects and made the reflected light from testing sample 30 collected by the first convergent lens 24 is saturating
Penetrate by with the first spectroscope 22 described in directive or the second convergent lens 41.In this example, exciting light 11 is directed to be measured
Light path and Raman light signal collection light path 21 on sample 30 are being from the part between the second spectroscope 25 and testing sample 30
Overlap.And in the optical path, the first spectroscope 22 is located at the downstream of the second spectroscope 25, it can avoid for the dry of light path front end
Disturb.
As an example, the position of the first spectroscope 22 and the second spectroscope 25 in Fig. 2 can be exchanged.For example, such as Fig. 7 institutes
Show, in Raman spectrum detection device 100b ', the second spectroscope 25 is located at first in the Raman light signal collection light path 21
Between the convergent lens 41 of spectroscope 22 and second.
As an example, second spectroscope 25 can be long logical dichroscope, i.e., only wavelength is allowed to be longer than certain threshold value
Light transmission pass through, and wavelength is shorter than to the photo-electric switch of the threshold value.The advantage of the program is, can weaken from testing sample
30 Reyleith scanttering light.Testing sample 30 will also tend to produce the Reyleith scanttering light that wavelength is less than Raman light while Raman light is produced, and
The threshold value of long logical dichroscope can be arranged to weaken or even eliminate the shorter Reyleith scanttering light of wavelength, so as to improve Raman optical signal
Signal to noise ratio.The specific threshold value of long logical dichroscope can be selected according to the requirement of actual measurement.It is of the present utility model
In embodiment, the second spectroscope 25 is not limited to long logical dichroscope, for example, can also use any other point known in the art
Light part realizes the second spectroscope 25.
In one example, can also be first point in Raman light signal collection light path 21 in order to preferably suppress Reyleith scanttering light
The downstream of light microscopic sets long pass filter piece or notch filter piece 26, for filtering out in the optical signal after the first spectroscope
Reyleith scanttering light.In embodiment of the present utility model, long pass filter piece or notch filter piece 26 are in Raman light signal collection light path 21
In position not limited to this, it can be arranged on any position between testing sample and spectrometer, as long as can play
Except the effect for the Reyleith scanttering light for collecting the optical signal in light path.For example, long pass filter piece or notch filter piece 26 can also positions
In first spectroscopical upstream, the variant of the embodiment as shown in for Fig. 5, long pass filter piece or notch filter piece 26 can also
It is arranged on the position between the first spectroscope and the second spectroscope.In the case, the optical signal collected in light path can be successively
By the first convergent lens, the second spectroscope, long pass filter piece or notch filter piece, the first spectroscope, the second convergent lens and
Spectrometer.Certainly, embodiment of the present utility model is not limited to this, for example, it is also possible to be not provided with long pass filter piece or trap filter
Wave plate 26.
In another example, as shown in Figure 3 and Figure 4, Optical devices 20 ' can also include：Raman light signal collection light path
21, for collecting the Raman optical signal from the testing sample；And infrared light collects light path 23 ', institute is come from for collecting
State the infrared light of testing sample 30.It is different from the infra-red radiation branch road 23 in above-mentioned example as depicted in figs. 1 and 2, it is described red
Outer light collects light path 23 ' and is totally independent of the Raman light signal collection light path 21.This can retain Raman spectrum as much as possible
Original light channel structure of detection means.Area network safety detector 50 can be arranged at any position near testing sample 30, as long as red
The intensity of external signal disclosure satisfy that the detection requirement of area network safety detector 50.
The exemplary Raman spectrum shown in exemplary Raman spectrum the detection device 100c and Fig. 4 shown in Fig. 3
Detection device 100d's differs only in, in figure 3, and exciting light 11 is directed to light path and Raman light letter on testing sample 30
It is being to overlap from the part between the second spectroscope 25 and testing sample 30 number to collect light path 21, and in Fig. 4, exciting light 11
The light path and Raman light signal collection light path 21 being directed on testing sample 30 are completely self-contained (or referred to as exciting lights 11
Testing sample 30 is irradiated to by off-axis).In the example of fig. 4, the second spectroscope 25 is not necessary element, is shown in Fig. 4
Go out to be intended merely to facilitate and be compared with Fig. 3 example.
In Fig. 1 and Fig. 4 example, as an example, can also be by certain before exciting light is irradiated on testing sample 30
A little optical elements (such as speculum) change direction with more convenient and be directed into exactly on testing sample 30.
As shown in figure 5, in one example, Raman spectrum detection device 100e can also include controller 60.The control
Device 60 receives the testing result of the area network safety detector 50 and sends control signal to the laser 10.The controller 60 can
To be configured to reduce laser 10 when the emittance of the infrared light detected by area network safety detector 50 exceedes predetermined threshold
Power or shut-off laser 10.As an example, by the temperature and the emittance of its infrared light sent of testing sample 30
There is corresponding relation, therefore, the predetermined threshold of the emittance of set infrared light can correspond to one not in controller 60
More than the temperature value of the maximum allowable temperature of testing sample 30, so as to avoid testing sample 30 because temperature is too high and is ruined.Institute
Stating controller 60 can be realized by such as part such as integrated circuit, signal processor, computer.
As an example, the Optical devices 20 can be integrated in fibre-optical probe 70, what the laser 10 was sent excites
Light 11 can import the fibre-optical probe 70 by importing optical fiber 71, and the fibre-optical probe 70 will be collected into by collecting optical fiber 72
Raman optical signal be sent to spectrometer 40.Certainly, Optical devices 20 can also be built by discrete optical element.But use
The mode of fibre-optical probe 70, it is possible to increase the stability of system.
As an example, exciting light is reached between the second spectroscope 25 or the first convergent lens 24, collimation may also pass through
Lens 27 and narrow band filter slice 28.Collimation lens 27 can make exciting light be referred to as being similar to directional light improving directionality and optics
Efficiency.Narrow band filter slice 28 can remove interference, improve signal to noise ratio of the exciting light in desired wavelength period.As an example, being
The folding of light path is realized, one or more deflection mirrors 29 can also be set.As an example, in order that Raman signal light
Spectrometer 40 can be preferably coupled into, second convergent lens 41 can also be set in the upstream for collecting optical fiber 72.
Embodiment of the present utility model additionally provides a kind of method for safety monitoring 200 of Raman spectrum detection device.Such as Fig. 6
Shown, the method for safety monitoring 200 can include：
Step S10：Exciting light is launched by laser；
Step S20：The exciting light is guided to testing sample and the Raman optical signal from the testing sample is collected；
And
Step S30：It is described to monitor to detect the emittance for the infrared light that the testing sample is sent by area network safety detector
The temperature of testing sample.
This method can be used for the temperature that testing sample is monitored when Raman spectrum detection device works.
As an example, the method for safety monitoring 200 can also include：
Step S40：Reduce the power or shut-off laser of laser when the temperature of the testing sample is more than predetermined threshold
Device.
Whether the temperature that step S40 can monitor testing sample in real time when Raman spectrum detection device works is more than
Predetermined threshold (predetermined threshold can be for example 80 degree, 100 degree, 150 degree etc., can be dependent on testing sample 30 to determine),
So as to ensure the security for detecting work.
As an example, the monitoring method 200 can also include：
Step S50：Laser is turned off after laser transmitting exciting light continues a predetermined amount of time, and according to testing sample
Temperature change in the predetermined amount of time determines the security of testing sample.
Step S50 can be used for the security that detection is assessed before Raman spectrum detection operation is formally performed.This is pre-
Section of fixing time for example can be 0.5 second, 1 second, 3 seconds etc..If it is expected that the temperature of testing sample may be too high, then there can be pin
Raman detection parameter (such as laser power, testing sample position) is controlled property, so as to avoid occurring in formal detection
Security risk.
In embodiment of the present utility model, step S40 and step S50 can select one and use, and can also be applied in combination.Figure
Dotted portion represents optional step in 6.
Detailed description above has elaborated above-mentioned Raman spectrum inspection by using schematic diagram, flow chart and/or example
Numerous embodiments of measurement equipment and its monitoring method.One or more functions are included in this schematic diagram, flow chart and/or example
And/or in the case of operation, it will be understood by those skilled in the art that each function in this schematic diagram, flow chart or example and/
Or operation can be by various structures, hardware, software, firmware or substantially their any combination come individually and/or common real
It is existing.In one embodiment, if the stem portion of theme described in embodiment of the present utility model can pass through application specific integrated circuit
(ASIC), field programmable gate array (FPGA), digital signal processor (DSP) or other integrated forms are realized.However,
Those skilled in the art will appreciate that some aspects of embodiments disclosed herein are on the whole or partly can be equally
Realize in integrated circuits, be embodied as the one or more computer programs run on one or more computer (for example, real
It is now the one or more programs run in one or more computer system), it is embodied as on the one or more processors
One or more programs (for example, being embodied as the one or more programs run in one or more microprocessors) of operation,
It is embodied as firmware, or is substantially embodied as any combination of aforesaid way, and those skilled in the art are according to the disclosure, will
Possesses the ability of design circuit and/or write-in software and/or firmware code.In addition, it would be recognized by those skilled in the art that this public affairs
The mechanism for opening the theme can be distributed as the program product of diversified forms, and no matter reality is used for performing distribution
How is the particular type of signal bearing medium, and the exemplary embodiment of theme described in the disclosure is applicable.Signal bearing medium
Example includes but is not limited to：Recordable-type media, such as floppy disk, hard disk drive, CD (CD, DVD), digital magnetic tape, computer
Memory etc.；And transmission type media, such as numeral and/or analogue communication medium are (for example, optical fiber cable, waveguide, wire communication chain
Road, wireless communication link etc.).
Unless there is technology barrier or contradiction, above-mentioned various embodiments of the present utility model can be formed with independent assortment
Further embodiment, these further embodiments are in protection domain of the present utility model.
Although the utility model is illustrated with reference to accompanying drawing, the embodiment disclosed in accompanying drawing is intended to this practicality
New preferred embodiment is illustrative, and it is not intended that to a kind of limitation of the present utility model.Chi in accompanying drawing
Very little ratio is only schematical, can not be interpreted as to limitation of the present utility model.
Although some embodiments of the utility model general plotting are shown and illustrated, those of ordinary skill in the art will
Understand, in the case of the principle and spirit conceived without departing substantially from this overall utility model, these embodiments can be made a change, this
The scope of utility model is limited with claim and their equivalent.
Claims (11)
1. a kind of Raman spectrum detection device, it is characterised in that including：
Laser, for launching exciting light；
Optical devices, for guiding to testing sample and collecting the optical signal from the testing sample exciting light；
Spectrometer, carries out light splitting to generate the Raman spectrum of testing sample for the optical signal to reception；And
Area network safety detector, for detecting the infrared light that the testing sample is sent.
2. Raman spectrum detection device as claimed in claim 1, it is characterised in that the Optical devices include：
Raman light signal collection light path, for collecting the optical signal from the testing sample, wherein, in Raman light path letter
Number collect in light path and to be provided with the first spectroscope, first spectroscope is arranged to be formed from Raman light path signal collection light path
Infra-red radiation branch road, the infrared light in the light of testing sample is guided towards area network safety detector.
3. Raman spectrum detection device as claimed in claim 2, it is characterised in that first spectroscope is short logical dichroic
Mirror, the short logical dichroscope is arranged to reflect the light that wavelength is more than predetermined wavelength towards area network safety detector, and makes wavelength small
In the predetermined wavelength light transmission by the short logical dichroscope, the predetermined wavelength is between 700 nanometers to 300 microns.
4. Raman spectrum detection device as claimed in claim 2, it is characterised in that first spectroscope is arranged to one
Light splitting is reflected towards safety detection detector, and another part light is transmitted towards spectrometer.
5. Raman spectrum detection device as claimed in claim 2, it is characterised in that the Raman light signal collection light path is also wrapped
Include：
First convergent lens, first convergent lens is used to exciting light is converged to testing sample and collected to come from testing sample
Optical signal；
Second convergent lens, second convergent lens is used to the next optical signal of collection converging to spectrometer；And
Second spectroscope, second spectroscope is located at the first spectroscope and the second meeting in the Raman light signal collection light path
Between poly- lens or between the first spectroscope and the first convergent lens, the exciting light by laser is come from is arranged for
At least a portion that the optical signal from testing sample collected by the first convergent lens is reflected and made to the first convergent lens is saturating
Penetrate by with the second convergent lens described in directive.
6. Raman spectrum detection device as claimed in claim 5, it is characterised in that second spectroscope is long logical dichroic
Mirror.
7. Raman spectrum detection device as claimed in claim 5, it is characterised in that in the Raman light signal collection light path also
Long pass filter piece or notch filter piece are provided with, long the pass filter piece or notch filter piece are under described first is spectroscopical
Trip, for filtering out the Reyleith scanttering light in the optical signal after the first spectroscope.
8. Raman spectrum detection device as claimed in claim 5, it is characterised in that in the Raman light signal collection light path also
Long pass filter piece or notch filter piece are provided with, long the pass filter piece or notch filter piece are located at the testing sample and spectrum
Between instrument, for filtering out the Reyleith scanttering light in optical signal.
9. Raman spectrum detection device as claimed in claim 1, it is characterised in that the Optical devices include：
Raman light signal collection light path, for collecting the optical signal from the testing sample；And
Infrared light collects light path, and for collecting the infrared light from the testing sample, it is completely only that the infrared light collects light path
Stand on the Raman light signal collection light path.
10. Raman spectrum detection device as claimed in any one of claims 1-9 wherein, it is characterised in that also including controller,
The controller receives the testing result of the area network safety detector and sends control signal to the laser, and the controller is matched somebody with somebody
It is set to power or the pass for reducing laser when the emittance of the infrared light detected by area network safety detector exceedes predetermined threshold
Disconnected laser.
11. Raman spectrum detection device as claimed in any one of claims 1-9 wherein, it is characterised in that the Optical devices collection
Into in fibre-optical probe, the exciting light that the laser is sent imports the fibre-optical probe by importing optical fiber, and the optical fiber is visited
Head is sent to spectrometer by collecting optical fiber by the optical signal being collected into.
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| CN106770176A (en) * | 2016-12-26 | 2017-05-31 | 同方威视技术股份有限公司 | The method for safety monitoring of Raman spectrum testing equipment and Raman spectrum testing equipment |
| CN107064108A (en) * | 2017-04-18 | 2017-08-18 | 北京无线电计量测试研究所 | A kind of low frequency moves the measuring method of Raman spectrum |
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| WO2019128880A1 (en) * | 2017-12-26 | 2019-07-04 | 同方威视技术股份有限公司 | Raman spectroscopy detection device and sample safety detection method for use in raman spectroscopy detection |
| CN110208239A (en) * | 2019-04-08 | 2019-09-06 | 大连理工大学 | Terahertz Raman spectra detection process based on time-domain frequency domain compacting stray light |
| CN110530846A (en) * | 2019-09-19 | 2019-12-03 | 北京华泰诺安探测技术有限公司 | A kind of laser Raman spectroscopy detection system and its detection method |
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